pub mod display_map; mod element; pub mod items; pub mod movement; mod multi_buffer; #[cfg(test)] mod test; use aho_corasick::AhoCorasick; use clock::ReplicaId; use collections::{HashMap, HashSet}; pub use display_map::DisplayPoint; use display_map::*; pub use element::*; use gpui::{ action, elements::*, fonts::TextStyle, geometry::vector::{vec2f, Vector2F}, keymap::Binding, text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle, MutableAppContext, RenderContext, View, ViewContext, WeakModelHandle, WeakViewHandle, }; use items::BufferItemHandle; use itertools::Itertools as _; use language::{ AnchorRangeExt as _, BracketPair, Buffer, Diagnostic, DiagnosticSeverity, Language, Point, Selection, SelectionGoal, TransactionId, }; pub use multi_buffer::{ Anchor, AnchorRangeExt, ExcerptId, ExcerptProperties, MultiBuffer, ToOffset, ToPoint, }; use multi_buffer::{MultiBufferChunks, MultiBufferSnapshot}; use postage::watch; use serde::{Deserialize, Serialize}; use smallvec::SmallVec; use smol::Timer; use std::{ cmp, iter::{self, FromIterator}, mem, ops::{Deref, Range, RangeInclusive, Sub}, sync::Arc, time::{Duration, Instant}, }; use sum_tree::Bias; use text::rope::TextDimension; use theme::{DiagnosticStyle, EditorStyle}; use util::post_inc; use workspace::{ItemNavHistory, PathOpener, Workspace}; const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500); const MAX_LINE_LEN: usize = 1024; const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10; action!(Cancel); action!(Backspace); action!(Delete); action!(Input, String); action!(Newline); action!(Tab); action!(Outdent); action!(DeleteLine); action!(DeleteToPreviousWordBoundary); action!(DeleteToNextWordBoundary); action!(DeleteToBeginningOfLine); action!(DeleteToEndOfLine); action!(CutToEndOfLine); action!(DuplicateLine); action!(MoveLineUp); action!(MoveLineDown); action!(Cut); action!(Copy); action!(Paste); action!(Undo); action!(Redo); action!(MoveUp); action!(MoveDown); action!(MoveLeft); action!(MoveRight); action!(MoveToPreviousWordBoundary); action!(MoveToNextWordBoundary); action!(MoveToBeginningOfLine); action!(MoveToEndOfLine); action!(MoveToBeginning); action!(MoveToEnd); action!(SelectUp); action!(SelectDown); action!(SelectLeft); action!(SelectRight); action!(SelectToPreviousWordBoundary); action!(SelectToNextWordBoundary); action!(SelectToBeginningOfLine, bool); action!(SelectToEndOfLine); action!(SelectToBeginning); action!(SelectToEnd); action!(SelectAll); action!(SelectLine); action!(SplitSelectionIntoLines); action!(AddSelectionAbove); action!(AddSelectionBelow); action!(SelectNext, bool); action!(ToggleComments); action!(SelectLargerSyntaxNode); action!(SelectSmallerSyntaxNode); action!(MoveToEnclosingBracket); action!(ShowNextDiagnostic); action!(GoToDefinition); action!(PageUp); action!(PageDown); action!(Fold); action!(Unfold); action!(FoldSelectedRanges); action!(Scroll, Vector2F); action!(Select, SelectPhase); pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec>) { path_openers.push(Box::new(items::BufferOpener)); cx.add_bindings(vec![ Binding::new("escape", Cancel, Some("Editor")), Binding::new("backspace", Backspace, Some("Editor")), Binding::new("ctrl-h", Backspace, Some("Editor")), Binding::new("delete", Delete, Some("Editor")), Binding::new("ctrl-d", Delete, Some("Editor")), Binding::new("enter", Newline, Some("Editor && mode == full")), Binding::new( "alt-enter", Input("\n".into()), Some("Editor && mode == auto_height"), ), Binding::new("tab", Tab, Some("Editor")), Binding::new("shift-tab", Outdent, Some("Editor")), Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")), Binding::new( "alt-backspace", DeleteToPreviousWordBoundary, Some("Editor"), ), Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")), Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")), Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")), Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")), Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")), Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")), Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")), Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")), Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")), Binding::new("cmd-x", Cut, Some("Editor")), Binding::new("cmd-c", Copy, Some("Editor")), Binding::new("cmd-v", Paste, Some("Editor")), Binding::new("cmd-z", Undo, Some("Editor")), Binding::new("cmd-shift-Z", Redo, Some("Editor")), Binding::new("up", MoveUp, Some("Editor")), Binding::new("down", MoveDown, Some("Editor")), Binding::new("left", MoveLeft, Some("Editor")), Binding::new("right", MoveRight, Some("Editor")), Binding::new("ctrl-p", MoveUp, Some("Editor")), Binding::new("ctrl-n", MoveDown, Some("Editor")), Binding::new("ctrl-b", MoveLeft, Some("Editor")), Binding::new("ctrl-f", MoveRight, Some("Editor")), Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")), Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")), Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")), Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")), Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")), Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")), Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")), Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")), Binding::new("cmd-up", MoveToBeginning, Some("Editor")), Binding::new("cmd-down", MoveToEnd, Some("Editor")), Binding::new("shift-up", SelectUp, Some("Editor")), Binding::new("ctrl-shift-P", SelectUp, Some("Editor")), Binding::new("shift-down", SelectDown, Some("Editor")), Binding::new("ctrl-shift-N", SelectDown, Some("Editor")), Binding::new("shift-left", SelectLeft, Some("Editor")), Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")), Binding::new("shift-right", SelectRight, Some("Editor")), Binding::new("ctrl-shift-F", SelectRight, Some("Editor")), Binding::new( "alt-shift-left", SelectToPreviousWordBoundary, Some("Editor"), ), Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")), Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")), Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")), Binding::new( "cmd-shift-left", SelectToBeginningOfLine(true), Some("Editor"), ), Binding::new( "ctrl-shift-A", SelectToBeginningOfLine(true), Some("Editor"), ), Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")), Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")), Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")), Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")), Binding::new("cmd-a", SelectAll, Some("Editor")), Binding::new("cmd-l", SelectLine, Some("Editor")), Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")), Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")), Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")), Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")), Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")), Binding::new("cmd-d", SelectNext(false), Some("Editor")), Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")), Binding::new("cmd-/", ToggleComments, Some("Editor")), Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")), Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")), Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")), Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")), Binding::new("f8", ShowNextDiagnostic, Some("Editor")), Binding::new("f12", GoToDefinition, Some("Editor")), Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")), Binding::new("pageup", PageUp, Some("Editor")), Binding::new("pagedown", PageDown, Some("Editor")), Binding::new("alt-cmd-[", Fold, Some("Editor")), Binding::new("alt-cmd-]", Unfold, Some("Editor")), Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")), ]); cx.add_action(Editor::open_new); cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx)); cx.add_action(Editor::select); cx.add_action(Editor::cancel); cx.add_action(Editor::handle_input); cx.add_action(Editor::newline); cx.add_action(Editor::backspace); cx.add_action(Editor::delete); cx.add_action(Editor::tab); cx.add_action(Editor::outdent); cx.add_action(Editor::delete_line); cx.add_action(Editor::delete_to_previous_word_boundary); cx.add_action(Editor::delete_to_next_word_boundary); cx.add_action(Editor::delete_to_beginning_of_line); cx.add_action(Editor::delete_to_end_of_line); cx.add_action(Editor::cut_to_end_of_line); cx.add_action(Editor::duplicate_line); cx.add_action(Editor::move_line_up); cx.add_action(Editor::move_line_down); cx.add_action(Editor::cut); cx.add_action(Editor::copy); cx.add_action(Editor::paste); cx.add_action(Editor::undo); cx.add_action(Editor::redo); cx.add_action(Editor::move_up); cx.add_action(Editor::move_down); cx.add_action(Editor::move_left); cx.add_action(Editor::move_right); cx.add_action(Editor::move_to_previous_word_boundary); cx.add_action(Editor::move_to_next_word_boundary); cx.add_action(Editor::move_to_beginning_of_line); cx.add_action(Editor::move_to_end_of_line); cx.add_action(Editor::move_to_beginning); cx.add_action(Editor::move_to_end); cx.add_action(Editor::select_up); cx.add_action(Editor::select_down); cx.add_action(Editor::select_left); cx.add_action(Editor::select_right); cx.add_action(Editor::select_to_previous_word_boundary); cx.add_action(Editor::select_to_next_word_boundary); cx.add_action(Editor::select_to_beginning_of_line); cx.add_action(Editor::select_to_end_of_line); cx.add_action(Editor::select_to_beginning); cx.add_action(Editor::select_to_end); cx.add_action(Editor::select_all); cx.add_action(Editor::select_line); cx.add_action(Editor::split_selection_into_lines); cx.add_action(Editor::add_selection_above); cx.add_action(Editor::add_selection_below); cx.add_action(Editor::select_next); cx.add_action(Editor::toggle_comments); cx.add_action(Editor::select_larger_syntax_node); cx.add_action(Editor::select_smaller_syntax_node); cx.add_action(Editor::move_to_enclosing_bracket); cx.add_action(Editor::show_next_diagnostic); cx.add_action(Editor::go_to_definition); cx.add_action(Editor::page_up); cx.add_action(Editor::page_down); cx.add_action(Editor::fold); cx.add_action(Editor::unfold); cx.add_action(Editor::fold_selected_ranges); } trait SelectionExt { fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range; fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range; fn display_range(&self, map: &DisplaySnapshot) -> Range; fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot) -> Range; } #[derive(Clone, Debug)] pub enum SelectPhase { Begin { position: DisplayPoint, add: bool, click_count: usize, }, BeginColumnar { position: DisplayPoint, overshoot: u32, }, Extend { position: DisplayPoint, click_count: usize, }, Update { position: DisplayPoint, overshoot: u32, scroll_position: Vector2F, }, End, } #[derive(Clone, Debug)] enum SelectMode { Character, Word(Range), Line(Range), All, } #[derive(PartialEq, Eq)] pub enum Autoscroll { Fit, Center, Newest, } #[derive(Copy, Clone, PartialEq, Eq)] pub enum EditorMode { SingleLine, AutoHeight { max_lines: usize }, Full, } #[derive(Clone)] pub struct EditorSettings { pub tab_size: usize, pub soft_wrap: SoftWrap, pub style: EditorStyle, } #[derive(Clone)] pub enum SoftWrap { None, EditorWidth, Column(u32), } pub type BuildSettings = Arc EditorSettings>; pub struct Editor { handle: WeakViewHandle, buffer: ModelHandle, display_map: ModelHandle, next_selection_id: usize, selections: Arc<[Selection]>, pending_selection: Option, columnar_selection_tail: Option, add_selections_state: Option, select_next_state: Option, selection_history: HashMap]>, Option]>>)>, autoclose_stack: Vec, select_larger_syntax_node_stack: Vec]>>, active_diagnostics: Option, scroll_position: Vector2F, scroll_top_anchor: Option, autoscroll_request: Option, build_settings: BuildSettings, focused: bool, show_local_cursors: bool, blink_epoch: usize, blinking_paused: bool, mode: EditorMode, vertical_scroll_margin: f32, placeholder_text: Option>, highlighted_rows: Option>, nav_history: Option, } pub struct EditorSnapshot { pub mode: EditorMode, pub display_snapshot: DisplaySnapshot, pub placeholder_text: Option>, is_focused: bool, scroll_position: Vector2F, scroll_top_anchor: Option, } struct PendingSelection { selection: Selection, mode: SelectMode, } struct AddSelectionsState { above: bool, stack: Vec, } struct SelectNextState { query: AhoCorasick, wordwise: bool, done: bool, } #[derive(Debug)] struct BracketPairState { ranges: Vec>, pair: BracketPair, } #[derive(Debug)] struct ActiveDiagnosticGroup { primary_range: Range, primary_message: String, blocks: HashMap, is_valid: bool, } #[derive(Serialize, Deserialize)] struct ClipboardSelection { len: usize, is_entire_line: bool, } pub struct NavigationData { anchor: Anchor, offset: usize, } impl Editor { pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext) -> Self { let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx)); let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx)); let mut view = Self::for_buffer(buffer, build_settings, cx); view.mode = EditorMode::SingleLine; view } pub fn auto_height( max_lines: usize, build_settings: BuildSettings, cx: &mut ViewContext, ) -> Self { let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx)); let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx)); let mut view = Self::for_buffer(buffer, build_settings, cx); view.mode = EditorMode::AutoHeight { max_lines }; view } pub fn for_buffer( buffer: ModelHandle, build_settings: BuildSettings, cx: &mut ViewContext, ) -> Self { Self::new(buffer, build_settings, cx) } pub fn clone(&self, cx: &mut ViewContext) -> Self { let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx); clone.scroll_position = self.scroll_position; clone.scroll_top_anchor = self.scroll_top_anchor.clone(); clone.nav_history = self .nav_history .as_ref() .map(|nav_history| ItemNavHistory::new(nav_history.history(), &cx.handle())); clone } pub fn new( buffer: ModelHandle, build_settings: BuildSettings, cx: &mut ViewContext, ) -> Self { let settings = build_settings(cx); let display_map = cx.add_model(|cx| { DisplayMap::new( buffer.clone(), settings.tab_size, settings.style.text.font_id, settings.style.text.font_size, None, cx, ) }); cx.observe(&buffer, Self::on_buffer_changed).detach(); cx.subscribe(&buffer, Self::on_buffer_event).detach(); cx.observe(&display_map, Self::on_display_map_changed) .detach(); let mut this = Self { handle: cx.weak_handle(), buffer, display_map, selections: Arc::from([]), pending_selection: None, columnar_selection_tail: None, next_selection_id: 0, add_selections_state: None, select_next_state: None, selection_history: Default::default(), autoclose_stack: Default::default(), select_larger_syntax_node_stack: Vec::new(), active_diagnostics: None, build_settings, scroll_position: Vector2F::zero(), scroll_top_anchor: None, autoscroll_request: None, focused: false, show_local_cursors: false, blink_epoch: 0, blinking_paused: false, mode: EditorMode::Full, vertical_scroll_margin: 3.0, placeholder_text: None, highlighted_rows: None, nav_history: None, }; let selection = Selection { id: post_inc(&mut this.next_selection_id), start: 0, end: 0, reversed: false, goal: SelectionGoal::None, }; this.update_selections(vec![selection], None, cx); this } pub fn open_new( workspace: &mut Workspace, _: &workspace::OpenNew, cx: &mut ViewContext, ) { let buffer = cx .add_model(|cx| Buffer::new(0, "", cx).with_language(language::PLAIN_TEXT.clone(), cx)); workspace.open_item(BufferItemHandle(buffer), cx); } pub fn replica_id(&self, cx: &AppContext) -> ReplicaId { self.buffer.read(cx).replica_id() } pub fn buffer(&self) -> &ModelHandle { &self.buffer } pub fn title(&self, cx: &AppContext) -> String { let filename = self .buffer() .read(cx) .file(cx) .map(|file| file.file_name(cx)); if let Some(name) = filename { name.to_string_lossy().into() } else { "untitled".into() } } pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot { EditorSnapshot { mode: self.mode, display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)), scroll_position: self.scroll_position, scroll_top_anchor: self.scroll_top_anchor.clone(), placeholder_text: self.placeholder_text.clone(), is_focused: self .handle .upgrade(cx) .map_or(false, |handle| handle.is_focused(cx)), } } pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc> { self.buffer.read(cx).language(cx) } pub fn set_placeholder_text( &mut self, placeholder_text: impl Into>, cx: &mut ViewContext, ) { self.placeholder_text = Some(placeholder_text.into()); cx.notify(); } pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext) { self.vertical_scroll_margin = margin_rows as f32; cx.notify(); } pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext) { let map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); if scroll_position.y() == 0. { self.scroll_top_anchor = None; self.scroll_position = scroll_position; } else { let scroll_top_buffer_offset = DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right); let anchor = map .buffer_snapshot .anchor_at(scroll_top_buffer_offset, Bias::Right); self.scroll_position = vec2f( scroll_position.x(), scroll_position.y() - anchor.to_display_point(&map).row() as f32, ); self.scroll_top_anchor = Some(anchor); } cx.notify(); } pub fn scroll_position(&self, cx: &mut ViewContext) -> Vector2F { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor) } pub fn clamp_scroll_left(&mut self, max: f32) -> bool { if max < self.scroll_position.x() { self.scroll_position.set_x(max); true } else { false } } pub fn autoscroll_vertically( &mut self, viewport_height: f32, line_height: f32, cx: &mut ViewContext, ) -> bool { let visible_lines = viewport_height / line_height; let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut scroll_position = compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor); let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) { (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.) } else { display_map.max_point().row().saturating_sub(1) as f32 }; if scroll_position.y() > max_scroll_top { scroll_position.set_y(max_scroll_top); self.set_scroll_position(scroll_position, cx); } let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() { autoscroll } else { return false; }; let first_cursor_top; let last_cursor_bottom; if let Some(highlighted_rows) = &self.highlighted_rows { first_cursor_top = highlighted_rows.start as f32; last_cursor_bottom = first_cursor_top + 1.; } else if autoscroll == Autoscroll::Newest { let newest_selection = self.newest_selection::(&display_map.buffer_snapshot); first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32; last_cursor_bottom = first_cursor_top + 1.; } else { let selections = self.local_selections::(cx); first_cursor_top = selections .first() .unwrap() .head() .to_display_point(&display_map) .row() as f32; last_cursor_bottom = selections .last() .unwrap() .head() .to_display_point(&display_map) .row() as f32 + 1.0; } let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) { 0. } else { ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor() }; if margin < 0.0 { return false; } match autoscroll { Autoscroll::Fit | Autoscroll::Newest => { let margin = margin.min(self.vertical_scroll_margin); let target_top = (first_cursor_top - margin).max(0.0); let target_bottom = last_cursor_bottom + margin; let start_row = scroll_position.y(); let end_row = start_row + visible_lines; if target_top < start_row { scroll_position.set_y(target_top); self.set_scroll_position(scroll_position, cx); } else if target_bottom >= end_row { scroll_position.set_y(target_bottom - visible_lines); self.set_scroll_position(scroll_position, cx); } } Autoscroll::Center => { scroll_position.set_y((first_cursor_top - margin).max(0.0)); self.set_scroll_position(scroll_position, cx); } } true } pub fn autoscroll_horizontally( &mut self, start_row: u32, viewport_width: f32, scroll_width: f32, max_glyph_width: f32, layouts: &[text_layout::Line], cx: &mut ViewContext, ) -> bool { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let selections = self.local_selections::(cx); let mut target_left; let mut target_right; if self.highlighted_rows.is_some() { target_left = 0.0_f32; target_right = 0.0_f32; } else { target_left = std::f32::INFINITY; target_right = 0.0_f32; for selection in selections { let head = selection.head().to_display_point(&display_map); if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 { let start_column = head.column().saturating_sub(3); let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3); target_left = target_left.min( layouts[(head.row() - start_row) as usize] .x_for_index(start_column as usize), ); target_right = target_right.max( layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize) + max_glyph_width, ); } } } target_right = target_right.min(scroll_width); if target_right - target_left > viewport_width { return false; } let scroll_left = self.scroll_position.x() * max_glyph_width; let scroll_right = scroll_left + viewport_width; if target_left < scroll_left { self.scroll_position.set_x(target_left / max_glyph_width); true } else if target_right > scroll_right { self.scroll_position .set_x((target_right - viewport_width) / max_glyph_width); true } else { false } } fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext) { match phase { SelectPhase::Begin { position, add, click_count, } => self.begin_selection(*position, *add, *click_count, cx), SelectPhase::BeginColumnar { position, overshoot, } => self.begin_columnar_selection(*position, *overshoot, cx), SelectPhase::Extend { position, click_count, } => self.extend_selection(*position, *click_count, cx), SelectPhase::Update { position, overshoot, scroll_position, } => self.update_selection(*position, *overshoot, *scroll_position, cx), SelectPhase::End => self.end_selection(cx), } } fn extend_selection( &mut self, position: DisplayPoint, click_count: usize, cx: &mut ViewContext, ) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let tail = self .newest_selection::(&display_map.buffer_snapshot) .tail(); self.begin_selection(position, false, click_count, cx); let position = position.to_offset(&display_map, Bias::Left); let tail_anchor = display_map.buffer_snapshot.anchor_before(tail); let pending = self.pending_selection.as_mut().unwrap(); if position >= tail { pending.selection.start = tail_anchor.clone(); } else { pending.selection.end = tail_anchor.clone(); pending.selection.reversed = true; } match &mut pending.mode { SelectMode::Word(range) | SelectMode::Line(range) => { *range = tail_anchor.clone()..tail_anchor } _ => {} } } fn begin_selection( &mut self, position: DisplayPoint, add: bool, click_count: usize, cx: &mut ViewContext, ) { if !self.focused { cx.focus_self(); cx.emit(Event::Activate); } let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let buffer = &display_map.buffer_snapshot; let newest_selection = self.newest_selection_internal().unwrap().clone(); let start; let end; let mode; match click_count { 1 => { start = buffer.anchor_before(position.to_point(&display_map)); end = start.clone(); mode = SelectMode::Character; } 2 => { let range = movement::surrounding_word(&display_map, position); start = buffer.anchor_before(range.start.to_point(&display_map)); end = buffer.anchor_before(range.end.to_point(&display_map)); mode = SelectMode::Word(start.clone()..end.clone()); } 3 => { let position = display_map.clip_point(position, Bias::Left); let line_start = movement::line_beginning(&display_map, position, false); let mut next_line_start = line_start.clone(); *next_line_start.row_mut() += 1; *next_line_start.column_mut() = 0; next_line_start = display_map.clip_point(next_line_start, Bias::Right); start = buffer.anchor_before(line_start.to_point(&display_map)); end = buffer.anchor_before(next_line_start.to_point(&display_map)); mode = SelectMode::Line(start.clone()..end.clone()); } _ => { start = buffer.anchor_before(0); end = buffer.anchor_before(buffer.len()); mode = SelectMode::All; } } self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx); let selection = Selection { id: post_inc(&mut self.next_selection_id), start, end, reversed: false, goal: SelectionGoal::None, }; if !add { self.update_selections::(Vec::new(), None, cx); } else if click_count > 1 { // Remove the newest selection since it was only added as part of this multi-click. let mut selections = self.local_selections(cx); selections.retain(|selection| selection.id != newest_selection.id); self.update_selections::(selections, None, cx) } self.pending_selection = Some(PendingSelection { selection, mode }); cx.notify(); } fn begin_columnar_selection( &mut self, position: DisplayPoint, overshoot: u32, cx: &mut ViewContext, ) { if !self.focused { cx.focus_self(); cx.emit(Event::Activate); } let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let tail = self .newest_selection::(&display_map.buffer_snapshot) .tail(); self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail)); self.select_columns( tail.to_display_point(&display_map), position, overshoot, &display_map, cx, ); } fn update_selection( &mut self, position: DisplayPoint, overshoot: u32, scroll_position: Vector2F, cx: &mut ViewContext, ) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); if let Some(tail) = self.columnar_selection_tail.as_ref() { let tail = tail.to_display_point(&display_map); self.select_columns(tail, position, overshoot, &display_map, cx); } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() { let buffer = self.buffer.read(cx).snapshot(cx); let head; let tail; match mode { SelectMode::Character => { head = position.to_point(&display_map); tail = selection.tail().to_point(&buffer); } SelectMode::Word(original_range) => { let original_display_range = original_range.start.to_display_point(&display_map) ..original_range.end.to_display_point(&display_map); let original_buffer_range = original_display_range.start.to_point(&display_map) ..original_display_range.end.to_point(&display_map); if movement::is_inside_word(&display_map, position) || original_display_range.contains(&position) { let word_range = movement::surrounding_word(&display_map, position); if word_range.start < original_display_range.start { head = word_range.start.to_point(&display_map); } else { head = word_range.end.to_point(&display_map); } } else { head = position.to_point(&display_map); } if head <= original_buffer_range.start { tail = original_buffer_range.end; } else { tail = original_buffer_range.start; } } SelectMode::Line(original_range) => { let original_display_range = original_range.start.to_display_point(&display_map) ..original_range.end.to_display_point(&display_map); let original_buffer_range = original_display_range.start.to_point(&display_map) ..original_display_range.end.to_point(&display_map); let line_start = movement::line_beginning(&display_map, position, false); let mut next_line_start = line_start.clone(); *next_line_start.row_mut() += 1; *next_line_start.column_mut() = 0; next_line_start = display_map.clip_point(next_line_start, Bias::Right); if line_start < original_display_range.start { head = line_start.to_point(&display_map); } else { head = next_line_start.to_point(&display_map); } if head <= original_buffer_range.start { tail = original_buffer_range.end; } else { tail = original_buffer_range.start; } } SelectMode::All => { return; } }; if head < tail { selection.start = buffer.anchor_before(head); selection.end = buffer.anchor_before(tail); selection.reversed = true; } else { selection.start = buffer.anchor_before(tail); selection.end = buffer.anchor_before(head); selection.reversed = false; } } else { log::error!("update_selection dispatched with no pending selection"); return; } self.set_scroll_position(scroll_position, cx); cx.notify(); } fn end_selection(&mut self, cx: &mut ViewContext) { self.columnar_selection_tail.take(); if self.pending_selection.is_some() { let selections = self.local_selections::(cx); self.update_selections(selections, None, cx); } } fn select_columns( &mut self, tail: DisplayPoint, head: DisplayPoint, overshoot: u32, display_map: &DisplaySnapshot, cx: &mut ViewContext, ) { let start_row = cmp::min(tail.row(), head.row()); let end_row = cmp::max(tail.row(), head.row()); let start_column = cmp::min(tail.column(), head.column() + overshoot); let end_column = cmp::max(tail.column(), head.column() + overshoot); let reversed = start_column < tail.column(); let selections = (start_row..=end_row) .filter_map(|row| { if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) { let start = display_map .clip_point(DisplayPoint::new(row, start_column), Bias::Left) .to_point(&display_map); let end = display_map .clip_point(DisplayPoint::new(row, end_column), Bias::Right) .to_point(&display_map); Some(Selection { id: post_inc(&mut self.next_selection_id), start, end, reversed, goal: SelectionGoal::None, }) } else { None } }) .collect::>(); self.update_selections(selections, None, cx); cx.notify(); } pub fn is_selecting(&self) -> bool { self.pending_selection.is_some() || self.columnar_selection_tail.is_some() } pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext) { if self.active_diagnostics.is_some() { self.dismiss_diagnostics(cx); } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() { let buffer = self.buffer.read(cx).snapshot(cx); let selection = Selection { id: selection.id, start: selection.start.to_point(&buffer), end: selection.end.to_point(&buffer), reversed: selection.reversed, goal: selection.goal, }; if self.local_selections::(cx).is_empty() { self.update_selections(vec![selection], Some(Autoscroll::Fit), cx); } } else { let buffer = self.buffer.read(cx).snapshot(cx); let mut oldest_selection = self.oldest_selection::(&buffer); if self.selection_count() == 1 { if oldest_selection.is_empty() { cx.propagate_action(); return; } oldest_selection.start = oldest_selection.head().clone(); oldest_selection.end = oldest_selection.head().clone(); } self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx); } } #[cfg(any(test, feature = "test-support"))] pub fn selected_ranges>( &self, cx: &mut MutableAppContext, ) -> Vec> { self.local_selections::(cx) .iter() .map(|s| { if s.reversed { s.end.clone()..s.start.clone() } else { s.start.clone()..s.end.clone() } }) .collect() } #[cfg(any(test, feature = "test-support"))] pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec> { let display_map = self .display_map .update(cx, |display_map, cx| display_map.snapshot(cx)); self.selections .iter() .chain( self.pending_selection .as_ref() .map(|pending| &pending.selection), ) .map(|s| { if s.reversed { s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map) } else { s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map) } }) .collect() } pub fn select_ranges( &mut self, ranges: I, autoscroll: Option, cx: &mut ViewContext, ) where I: IntoIterator>, T: ToOffset, { let buffer = self.buffer.read(cx).snapshot(cx); let selections = ranges .into_iter() .map(|range| { let mut start = range.start.to_offset(&buffer); let mut end = range.end.to_offset(&buffer); let reversed = if start > end { mem::swap(&mut start, &mut end); true } else { false }; Selection { id: post_inc(&mut self.next_selection_id), start, end, reversed, goal: SelectionGoal::None, } }) .collect::>(); self.update_selections(selections, autoscroll, cx); } #[cfg(any(test, feature = "test-support"))] pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext) where T: IntoIterator>, { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let selections = ranges .into_iter() .map(|range| { let mut start = range.start; let mut end = range.end; let reversed = if start > end { mem::swap(&mut start, &mut end); true } else { false }; Selection { id: post_inc(&mut self.next_selection_id), start: start.to_point(&display_map), end: end.to_point(&display_map), reversed, goal: SelectionGoal::None, } }) .collect(); self.update_selections(selections, None, cx); } pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext) { let text = action.0.as_ref(); if !self.skip_autoclose_end(text, cx) { self.start_transaction(cx); self.insert(text, cx); self.autoclose_pairs(cx); self.end_transaction(cx); } } pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext) { self.start_transaction(cx); let mut old_selections = SmallVec::<[_; 32]>::new(); { let selections = self.local_selections::(cx); let buffer = self.buffer.read(cx).snapshot(cx); for selection in selections.iter() { let start_point = selection.start; let indent = buffer .indent_column_for_line(start_point.row) .min(start_point.column); let start = selection.start.to_offset(&buffer); let end = selection.end.to_offset(&buffer); let mut insert_extra_newline = false; if let Some(language) = buffer.language() { let leading_whitespace_len = buffer .reversed_chars_at(start) .take_while(|c| c.is_whitespace() && *c != '\n') .map(|c| c.len_utf8()) .sum::(); let trailing_whitespace_len = buffer .chars_at(end) .take_while(|c| c.is_whitespace() && *c != '\n') .map(|c| c.len_utf8()) .sum::(); insert_extra_newline = language.brackets().iter().any(|pair| { let pair_start = pair.start.trim_end(); let pair_end = pair.end.trim_start(); pair.newline && buffer.contains_str_at(end + trailing_whitespace_len, pair_end) && buffer.contains_str_at( (start - leading_whitespace_len).saturating_sub(pair_start.len()), pair_start, ) }); } old_selections.push((selection.id, start..end, indent, insert_extra_newline)); } } self.buffer.update(cx, |buffer, cx| { let mut delta = 0_isize; let mut pending_edit: Option = None; for (_, range, indent, insert_extra_newline) in &old_selections { if pending_edit.as_ref().map_or(false, |pending| { pending.indent != *indent || pending.insert_extra_newline != *insert_extra_newline }) { let pending = pending_edit.take().unwrap(); let mut new_text = String::with_capacity(1 + pending.indent as usize); new_text.push('\n'); new_text.extend(iter::repeat(' ').take(pending.indent as usize)); if pending.insert_extra_newline { new_text = new_text.repeat(2); } buffer.edit_with_autoindent(pending.ranges, new_text, cx); delta += pending.delta; } let start = (range.start as isize + delta) as usize; let end = (range.end as isize + delta) as usize; let mut text_len = *indent as usize + 1; if *insert_extra_newline { text_len *= 2; } let pending = pending_edit.get_or_insert_with(Default::default); pending.delta += text_len as isize - (end - start) as isize; pending.indent = *indent; pending.insert_extra_newline = *insert_extra_newline; pending.ranges.push(start..end); } let pending = pending_edit.unwrap(); let mut new_text = String::with_capacity(1 + pending.indent as usize); new_text.push('\n'); new_text.extend(iter::repeat(' ').take(pending.indent as usize)); if pending.insert_extra_newline { new_text = new_text.repeat(2); } buffer.edit_with_autoindent(pending.ranges, new_text, cx); let buffer = buffer.read(cx); self.selections = self .selections .iter() .cloned() .zip(old_selections) .map(|(mut new_selection, (_, _, _, insert_extra_newline))| { if insert_extra_newline { let mut cursor = new_selection.start.to_point(&buffer); cursor.row -= 1; cursor.column = buffer.line_len(cursor.row); let anchor = buffer.anchor_after(cursor); new_selection.start = anchor.clone(); new_selection.end = anchor; } new_selection }) .collect(); }); self.request_autoscroll(Autoscroll::Fit, cx); self.end_transaction(cx); #[derive(Default)] struct PendingEdit { indent: u32, insert_extra_newline: bool, delta: isize, ranges: SmallVec<[Range; 32]>, } } pub fn insert(&mut self, text: &str, cx: &mut ViewContext) { self.start_transaction(cx); let old_selections = self.local_selections::(cx); self.buffer.update(cx, |buffer, cx| { let edit_ranges = old_selections.iter().map(|s| s.start..s.end); buffer.edit_with_autoindent(edit_ranges, text, cx); }); let selections = self.local_selections::(cx); self.update_selections(selections, Some(Autoscroll::Fit), cx); self.end_transaction(cx); } fn autoclose_pairs(&mut self, cx: &mut ViewContext) { let selections = self.local_selections::(cx); let mut bracket_pair_state = None; let mut new_selections = None; self.buffer.update(cx, |buffer, cx| { let mut snapshot = buffer.snapshot(cx); let left_biased_selections = selections .iter() .map(|selection| Selection { id: selection.id, start: snapshot.anchor_before(selection.start), end: snapshot.anchor_before(selection.end), reversed: selection.reversed, goal: selection.goal, }) .collect::>(); let autoclose_pair = snapshot.language().and_then(|language| { let first_selection_start = selections.first().unwrap().start; let pair = language.brackets().iter().find(|pair| { snapshot.contains_str_at( first_selection_start.saturating_sub(pair.start.len()), &pair.start, ) }); pair.and_then(|pair| { let should_autoclose = selections[1..].iter().all(|selection| { snapshot.contains_str_at( selection.start.saturating_sub(pair.start.len()), &pair.start, ) }); if should_autoclose { Some(pair.clone()) } else { None } }) }); if let Some(pair) = autoclose_pair { let selection_ranges = selections .iter() .map(|selection| { let start = selection.start.to_offset(&snapshot); start..start }) .collect::>(); buffer.edit(selection_ranges, &pair.end, cx); snapshot = buffer.snapshot(cx); new_selections = Some( self.resolve_selections::(left_biased_selections.iter(), &snapshot) .collect::>(), ); if pair.end.len() == 1 { let mut delta = 0; bracket_pair_state = Some(BracketPairState { ranges: selections .iter() .map(move |selection| { let offset = selection.start + delta; delta += 1; snapshot.anchor_before(offset)..snapshot.anchor_after(offset) }) .collect(), pair, }); } } }); if let Some(new_selections) = new_selections { self.update_selections(new_selections, None, cx); } if let Some(bracket_pair_state) = bracket_pair_state { self.autoclose_stack.push(bracket_pair_state); } } fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext) -> bool { let old_selections = self.local_selections::(cx); let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() { autoclose_pair } else { return false; }; if text != autoclose_pair.pair.end { return false; } debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len()); let buffer = self.buffer.read(cx).snapshot(cx); if old_selections .iter() .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer))) .all(|(selection, autoclose_range)| { let autoclose_range_end = autoclose_range.end.to_offset(&buffer); selection.is_empty() && selection.start == autoclose_range_end }) { let new_selections = old_selections .into_iter() .map(|selection| { let cursor = selection.start + 1; Selection { id: selection.id, start: cursor, end: cursor, reversed: false, goal: SelectionGoal::None, } }) .collect(); self.autoclose_stack.pop(); self.update_selections(new_selections, Some(Autoscroll::Fit), cx); true } else { false } } pub fn clear(&mut self, cx: &mut ViewContext) { self.start_transaction(cx); self.select_all(&SelectAll, cx); self.insert("", cx); self.end_transaction(cx); } pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext) { self.start_transaction(cx); let mut selections = self.local_selections::(cx); let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); for selection in &mut selections { if selection.is_empty() { let head = selection.head().to_display_point(&display_map); let cursor = movement::left(&display_map, head) .unwrap() .to_point(&display_map); selection.set_head(cursor); selection.goal = SelectionGoal::None; } } self.update_selections(selections, Some(Autoscroll::Fit), cx); self.insert("", cx); self.end_transaction(cx); } pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext) { self.start_transaction(cx); let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); for selection in &mut selections { if selection.is_empty() { let head = selection.head().to_display_point(&display_map); let cursor = movement::right(&display_map, head) .unwrap() .to_point(&display_map); selection.set_head(cursor); selection.goal = SelectionGoal::None; } } self.update_selections(selections, Some(Autoscroll::Fit), cx); self.insert(&"", cx); self.end_transaction(cx); } pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext) { self.start_transaction(cx); let tab_size = (self.build_settings)(cx).tab_size; let mut selections = self.local_selections::(cx); let mut last_indent = None; self.buffer.update(cx, |buffer, cx| { for selection in &mut selections { if selection.is_empty() { let char_column = buffer .read(cx) .text_for_range(Point::new(selection.start.row, 0)..selection.start) .flat_map(str::chars) .count(); let chars_to_next_tab_stop = tab_size - (char_column % tab_size); buffer.edit( [selection.start..selection.start], " ".repeat(chars_to_next_tab_stop), cx, ); selection.start.column += chars_to_next_tab_stop as u32; selection.end = selection.start; } else { let mut start_row = selection.start.row; let mut end_row = selection.end.row + 1; // If a selection ends at the beginning of a line, don't indent // that last line. if selection.end.column == 0 { end_row -= 1; } // Avoid re-indenting a row that has already been indented by a // previous selection, but still update this selection's column // to reflect that indentation. if let Some((last_indent_row, last_indent_len)) = last_indent { if last_indent_row == selection.start.row { selection.start.column += last_indent_len; start_row += 1; } if last_indent_row == selection.end.row { selection.end.column += last_indent_len; } } for row in start_row..end_row { let indent_column = buffer.read(cx).indent_column_for_line(row) as usize; let columns_to_next_tab_stop = tab_size - (indent_column % tab_size); let row_start = Point::new(row, 0); buffer.edit( [row_start..row_start], " ".repeat(columns_to_next_tab_stop), cx, ); // Update this selection's endpoints to reflect the indentation. if row == selection.start.row { selection.start.column += columns_to_next_tab_stop as u32; } if row == selection.end.row { selection.end.column += columns_to_next_tab_stop as u32; } last_indent = Some((row, columns_to_next_tab_stop as u32)); } } } }); self.update_selections(selections, Some(Autoscroll::Fit), cx); self.end_transaction(cx); } pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext) { self.start_transaction(cx); let tab_size = (self.build_settings)(cx).tab_size; let selections = self.local_selections::(cx); let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut deletion_ranges = Vec::new(); let mut last_outdent = None; { let buffer = self.buffer.read(cx).read(cx); for selection in &selections { let mut rows = selection.spanned_rows(false, &display_map); // Avoid re-outdenting a row that has already been outdented by a // previous selection. if let Some(last_row) = last_outdent { if last_row == rows.start { rows.start += 1; } } for row in rows { let column = buffer.indent_column_for_line(row) as usize; if column > 0 { let mut deletion_len = (column % tab_size) as u32; if deletion_len == 0 { deletion_len = tab_size as u32; } deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len)); last_outdent = Some(row); } } } } self.buffer.update(cx, |buffer, cx| { buffer.edit(deletion_ranges, "", cx); }); self.update_selections( self.local_selections::(cx), Some(Autoscroll::Fit), cx, ); self.end_transaction(cx); } pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext) { self.start_transaction(cx); let selections = self.local_selections::(cx); let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let buffer = self.buffer.read(cx).snapshot(cx); let mut new_cursors = Vec::new(); let mut edit_ranges = Vec::new(); let mut selections = selections.iter().peekable(); while let Some(selection) = selections.next() { let mut rows = selection.spanned_rows(false, &display_map); let goal_display_column = selection.head().to_display_point(&display_map).column(); // Accumulate contiguous regions of rows that we want to delete. while let Some(next_selection) = selections.peek() { let next_rows = next_selection.spanned_rows(false, &display_map); if next_rows.start <= rows.end { rows.end = next_rows.end; selections.next().unwrap(); } else { break; } } let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer); let edit_end; let cursor_buffer_row; if buffer.max_point().row >= rows.end { // If there's a line after the range, delete the \n from the end of the row range // and position the cursor on the next line. edit_end = Point::new(rows.end, 0).to_offset(&buffer); cursor_buffer_row = rows.end; } else { // If there isn't a line after the range, delete the \n from the line before the // start of the row range and position the cursor there. edit_start = edit_start.saturating_sub(1); edit_end = buffer.len(); cursor_buffer_row = rows.start.saturating_sub(1); } let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map); *cursor.column_mut() = cmp::min(goal_display_column, display_map.line_len(cursor.row())); new_cursors.push(( selection.id, buffer.anchor_after(cursor.to_point(&display_map)), )); edit_ranges.push(edit_start..edit_end); } let buffer = self.buffer.update(cx, |buffer, cx| { buffer.edit(edit_ranges, "", cx); buffer.snapshot(cx) }); let new_selections = new_cursors .into_iter() .map(|(id, cursor)| { let cursor = cursor.to_point(&buffer); Selection { id, start: cursor, end: cursor, reversed: false, goal: SelectionGoal::None, } }) .collect(); self.update_selections(new_selections, Some(Autoscroll::Fit), cx); self.end_transaction(cx); } pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext) { self.start_transaction(cx); let selections = self.local_selections::(cx); let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let buffer = &display_map.buffer_snapshot; let mut edits = Vec::new(); let mut selections_iter = selections.iter().peekable(); while let Some(selection) = selections_iter.next() { // Avoid duplicating the same lines twice. let mut rows = selection.spanned_rows(false, &display_map); while let Some(next_selection) = selections_iter.peek() { let next_rows = next_selection.spanned_rows(false, &display_map); if next_rows.start <= rows.end - 1 { rows.end = next_rows.end; selections_iter.next().unwrap(); } else { break; } } // Copy the text from the selected row region and splice it at the start of the region. let start = Point::new(rows.start, 0); let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1)); let text = buffer .text_for_range(start..end) .chain(Some("\n")) .collect::(); edits.push((start, text, rows.len() as u32)); } self.buffer.update(cx, |buffer, cx| { for (point, text, _) in edits.into_iter().rev() { buffer.edit(Some(point..point), text, cx); } }); self.request_autoscroll(Autoscroll::Fit, cx); self.end_transaction(cx); } pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let buffer = self.buffer.read(cx).snapshot(cx); let mut edits = Vec::new(); let mut unfold_ranges = Vec::new(); let mut refold_ranges = Vec::new(); let selections = self.local_selections::(cx); let mut selections = selections.iter().peekable(); let mut contiguous_row_selections = Vec::new(); let mut new_selections = Vec::new(); while let Some(selection) = selections.next() { // Find all the selections that span a contiguous row range contiguous_row_selections.push(selection.clone()); let start_row = selection.start.row; let mut end_row = if selection.end.column > 0 || selection.is_empty() { display_map.next_line_boundary(selection.end).0.row + 1 } else { selection.end.row }; while let Some(next_selection) = selections.peek() { if next_selection.start.row <= end_row { end_row = if next_selection.end.column > 0 || next_selection.is_empty() { display_map.next_line_boundary(next_selection.end).0.row + 1 } else { next_selection.end.row }; contiguous_row_selections.push(selections.next().unwrap().clone()); } else { break; } } // Move the text spanned by the row range to be before the line preceding the row range if start_row > 0 { let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1)) ..Point::new(end_row - 1, buffer.line_len(end_row - 1)); let insertion_point = display_map .prev_line_boundary(Point::new(start_row - 1, 0)) .0; // Don't move lines across excerpts if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) { let text = buffer .text_for_range(range_to_move.clone()) .flat_map(|s| s.chars()) .skip(1) .chain(['\n']) .collect::(); edits.push(( buffer.anchor_after(range_to_move.start) ..buffer.anchor_before(range_to_move.end), String::new(), )); let insertion_anchor = buffer.anchor_after(insertion_point); edits.push((insertion_anchor.clone()..insertion_anchor, text)); let row_delta = range_to_move.start.row - insertion_point.row + 1; // Move selections up new_selections.extend(contiguous_row_selections.drain(..).map( |mut selection| { selection.start.row -= row_delta; selection.end.row -= row_delta; selection }, )); // Move folds up unfold_ranges.push(range_to_move.clone()); for fold in display_map.folds_in_range( buffer.anchor_before(range_to_move.start) ..buffer.anchor_after(range_to_move.end), ) { let mut start = fold.start.to_point(&buffer); let mut end = fold.end.to_point(&buffer); start.row -= row_delta; end.row -= row_delta; refold_ranges.push(start..end); } } } // If we didn't move line(s), preserve the existing selections new_selections.extend(contiguous_row_selections.drain(..)); } self.start_transaction(cx); self.unfold_ranges(unfold_ranges, cx); self.buffer.update(cx, |buffer, cx| { for (range, text) in edits { buffer.edit([range], text, cx); } }); self.fold_ranges(refold_ranges, cx); self.update_selections(new_selections, Some(Autoscroll::Fit), cx); self.end_transaction(cx); } pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let buffer = self.buffer.read(cx).snapshot(cx); let mut edits = Vec::new(); let mut unfold_ranges = Vec::new(); let mut refold_ranges = Vec::new(); let selections = self.local_selections::(cx); let mut selections = selections.iter().peekable(); let mut contiguous_row_selections = Vec::new(); let mut new_selections = Vec::new(); while let Some(selection) = selections.next() { // Find all the selections that span a contiguous row range contiguous_row_selections.push(selection.clone()); let start_row = selection.start.row; let mut end_row = if selection.end.column > 0 || selection.is_empty() { display_map.next_line_boundary(selection.end).0.row + 1 } else { selection.end.row }; while let Some(next_selection) = selections.peek() { if next_selection.start.row <= end_row { end_row = if next_selection.end.column > 0 || next_selection.is_empty() { display_map.next_line_boundary(next_selection.end).0.row + 1 } else { next_selection.end.row }; contiguous_row_selections.push(selections.next().unwrap().clone()); } else { break; } } // Move the text spanned by the row range to be after the last line of the row range if end_row <= buffer.max_point().row { let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0); let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0; // Don't move lines across excerpt boundaries if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) { let mut text = String::from("\n"); text.extend(buffer.text_for_range(range_to_move.clone())); text.pop(); // Drop trailing newline edits.push(( buffer.anchor_after(range_to_move.start) ..buffer.anchor_before(range_to_move.end), String::new(), )); let insertion_anchor = buffer.anchor_after(insertion_point); edits.push((insertion_anchor.clone()..insertion_anchor, text)); let row_delta = insertion_point.row - range_to_move.end.row + 1; // Move selections down new_selections.extend(contiguous_row_selections.drain(..).map( |mut selection| { selection.start.row += row_delta; selection.end.row += row_delta; selection }, )); // Move folds down unfold_ranges.push(range_to_move.clone()); for fold in display_map.folds_in_range( buffer.anchor_before(range_to_move.start) ..buffer.anchor_after(range_to_move.end), ) { let mut start = fold.start.to_point(&buffer); let mut end = fold.end.to_point(&buffer); start.row += row_delta; end.row += row_delta; refold_ranges.push(start..end); } } } // If we didn't move line(s), preserve the existing selections new_selections.extend(contiguous_row_selections.drain(..)); } self.start_transaction(cx); self.unfold_ranges(unfold_ranges, cx); self.buffer.update(cx, |buffer, cx| { for (range, text) in edits { buffer.edit([range], text, cx); } }); self.fold_ranges(refold_ranges, cx); self.update_selections(new_selections, Some(Autoscroll::Fit), cx); self.end_transaction(cx); } pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext) { self.start_transaction(cx); let mut text = String::new(); let mut selections = self.local_selections::(cx); let mut clipboard_selections = Vec::with_capacity(selections.len()); { let buffer = self.buffer.read(cx).read(cx); let max_point = buffer.max_point(); for selection in &mut selections { let is_entire_line = selection.is_empty(); if is_entire_line { selection.start = Point::new(selection.start.row, 0); selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0)); } let mut len = 0; for chunk in buffer.text_for_range(selection.start..selection.end) { text.push_str(chunk); len += chunk.len(); } clipboard_selections.push(ClipboardSelection { len, is_entire_line, }); } } self.update_selections(selections, Some(Autoscroll::Fit), cx); self.insert("", cx); self.end_transaction(cx); cx.as_mut() .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections)); } pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext) { let selections = self.local_selections::(cx); let mut text = String::new(); let mut clipboard_selections = Vec::with_capacity(selections.len()); { let buffer = self.buffer.read(cx).read(cx); let max_point = buffer.max_point(); for selection in selections.iter() { let mut start = selection.start; let mut end = selection.end; let is_entire_line = selection.is_empty(); if is_entire_line { start = Point::new(start.row, 0); end = cmp::min(max_point, Point::new(start.row + 1, 0)); } let mut len = 0; for chunk in buffer.text_for_range(start..end) { text.push_str(chunk); len += chunk.len(); } clipboard_selections.push(ClipboardSelection { len, is_entire_line, }); } } cx.as_mut() .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections)); } pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext) { if let Some(item) = cx.as_mut().read_from_clipboard() { let clipboard_text = item.text(); if let Some(mut clipboard_selections) = item.metadata::>() { let mut selections = self.local_selections::(cx); let all_selections_were_entire_line = clipboard_selections.iter().all(|s| s.is_entire_line); if clipboard_selections.len() != selections.len() { clipboard_selections.clear(); } let mut delta = 0_isize; let mut start_offset = 0; for (i, selection) in selections.iter_mut().enumerate() { let to_insert; let entire_line; if let Some(clipboard_selection) = clipboard_selections.get(i) { let end_offset = start_offset + clipboard_selection.len; to_insert = &clipboard_text[start_offset..end_offset]; entire_line = clipboard_selection.is_entire_line; start_offset = end_offset } else { to_insert = clipboard_text.as_str(); entire_line = all_selections_were_entire_line; } selection.start = (selection.start as isize + delta) as usize; selection.end = (selection.end as isize + delta) as usize; self.buffer.update(cx, |buffer, cx| { // If the corresponding selection was empty when this slice of the // clipboard text was written, then the entire line containing the // selection was copied. If this selection is also currently empty, // then paste the line before the current line of the buffer. let range = if selection.is_empty() && entire_line { let column = selection.start.to_point(&buffer.read(cx)).column as usize; let line_start = selection.start - column; line_start..line_start } else { selection.start..selection.end }; delta += to_insert.len() as isize - range.len() as isize; buffer.edit([range], to_insert, cx); selection.start += to_insert.len(); selection.end = selection.start; }); } self.update_selections(selections, Some(Autoscroll::Fit), cx); } else { self.insert(clipboard_text, cx); } } } pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext) { if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) { if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() { self.set_selections(selections, cx); } self.request_autoscroll(Autoscroll::Fit, cx); } } pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext) { if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) { if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() { self.set_selections(selections, cx); } self.request_autoscroll(Autoscroll::Fit, cx); } } pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); for selection in &mut selections { let start = selection.start.to_display_point(&display_map); let end = selection.end.to_display_point(&display_map); if start != end { selection.end = selection.start.clone(); } else { let cursor = movement::left(&display_map, start) .unwrap() .to_point(&display_map); selection.start = cursor.clone(); selection.end = cursor; } selection.reversed = false; selection.goal = SelectionGoal::None; } self.update_selections(selections, Some(Autoscroll::Fit), cx); } pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); for selection in &mut selections { let head = selection.head().to_display_point(&display_map); let cursor = movement::left(&display_map, head) .unwrap() .to_point(&display_map); selection.set_head(cursor); selection.goal = SelectionGoal::None; } self.update_selections(selections, Some(Autoscroll::Fit), cx); } pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); for selection in &mut selections { let start = selection.start.to_display_point(&display_map); let end = selection.end.to_display_point(&display_map); if start != end { selection.start = selection.end.clone(); } else { let cursor = movement::right(&display_map, end) .unwrap() .to_point(&display_map); selection.start = cursor; selection.end = cursor; } selection.reversed = false; selection.goal = SelectionGoal::None; } self.update_selections(selections, Some(Autoscroll::Fit), cx); } pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); for selection in &mut selections { let head = selection.head().to_display_point(&display_map); let cursor = movement::right(&display_map, head) .unwrap() .to_point(&display_map); selection.set_head(cursor); selection.goal = SelectionGoal::None; } self.update_selections(selections, Some(Autoscroll::Fit), cx); } pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext) { if matches!(self.mode, EditorMode::SingleLine) { cx.propagate_action(); return; } let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); for selection in &mut selections { let start = selection.start.to_display_point(&display_map); let end = selection.end.to_display_point(&display_map); if start != end { selection.goal = SelectionGoal::None; } let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap(); let cursor = start.to_point(&display_map); selection.start = cursor; selection.end = cursor; selection.goal = goal; selection.reversed = false; } self.update_selections(selections, Some(Autoscroll::Fit), cx); } pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); for selection in &mut selections { let head = selection.head().to_display_point(&display_map); let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap(); let cursor = head.to_point(&display_map); selection.set_head(cursor); selection.goal = goal; } self.update_selections(selections, Some(Autoscroll::Fit), cx); } pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext) { if matches!(self.mode, EditorMode::SingleLine) { cx.propagate_action(); return; } let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); for selection in &mut selections { let start = selection.start.to_display_point(&display_map); let end = selection.end.to_display_point(&display_map); if start != end { selection.goal = SelectionGoal::None; } let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap(); let cursor = start.to_point(&display_map); selection.start = cursor; selection.end = cursor; selection.goal = goal; selection.reversed = false; } self.update_selections(selections, Some(Autoscroll::Fit), cx); } pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); for selection in &mut selections { let head = selection.head().to_display_point(&display_map); let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap(); let cursor = head.to_point(&display_map); selection.set_head(cursor); selection.goal = goal; } self.update_selections(selections, Some(Autoscroll::Fit), cx); } pub fn move_to_previous_word_boundary( &mut self, _: &MoveToPreviousWordBoundary, cx: &mut ViewContext, ) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); for selection in &mut selections { let head = selection.head().to_display_point(&display_map); let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map); selection.start = cursor.clone(); selection.end = cursor; selection.reversed = false; selection.goal = SelectionGoal::None; } self.update_selections(selections, Some(Autoscroll::Fit), cx); } pub fn select_to_previous_word_boundary( &mut self, _: &SelectToPreviousWordBoundary, cx: &mut ViewContext, ) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); for selection in &mut selections { let head = selection.head().to_display_point(&display_map); let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map); selection.set_head(cursor); selection.goal = SelectionGoal::None; } self.update_selections(selections, Some(Autoscroll::Fit), cx); } pub fn delete_to_previous_word_boundary( &mut self, _: &DeleteToPreviousWordBoundary, cx: &mut ViewContext, ) { self.start_transaction(cx); let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); for selection in &mut selections { if selection.is_empty() { let head = selection.head().to_display_point(&display_map); let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map); selection.set_head(cursor); selection.goal = SelectionGoal::None; } } self.update_selections(selections, Some(Autoscroll::Fit), cx); self.insert("", cx); self.end_transaction(cx); } pub fn move_to_next_word_boundary( &mut self, _: &MoveToNextWordBoundary, cx: &mut ViewContext, ) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); for selection in &mut selections { let head = selection.head().to_display_point(&display_map); let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map); selection.start = cursor; selection.end = cursor; selection.reversed = false; selection.goal = SelectionGoal::None; } self.update_selections(selections, Some(Autoscroll::Fit), cx); } pub fn select_to_next_word_boundary( &mut self, _: &SelectToNextWordBoundary, cx: &mut ViewContext, ) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); for selection in &mut selections { let head = selection.head().to_display_point(&display_map); let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map); selection.set_head(cursor); selection.goal = SelectionGoal::None; } self.update_selections(selections, Some(Autoscroll::Fit), cx); } pub fn delete_to_next_word_boundary( &mut self, _: &DeleteToNextWordBoundary, cx: &mut ViewContext, ) { self.start_transaction(cx); let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); for selection in &mut selections { if selection.is_empty() { let head = selection.head().to_display_point(&display_map); let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map); selection.set_head(cursor); selection.goal = SelectionGoal::None; } } self.update_selections(selections, Some(Autoscroll::Fit), cx); self.insert("", cx); self.end_transaction(cx); } pub fn move_to_beginning_of_line( &mut self, _: &MoveToBeginningOfLine, cx: &mut ViewContext, ) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); for selection in &mut selections { let head = selection.head().to_display_point(&display_map); let new_head = movement::line_beginning(&display_map, head, true); let cursor = new_head.to_point(&display_map); selection.start = cursor; selection.end = cursor; selection.reversed = false; selection.goal = SelectionGoal::None; } self.update_selections(selections, Some(Autoscroll::Fit), cx); } pub fn select_to_beginning_of_line( &mut self, SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine, cx: &mut ViewContext, ) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); for selection in &mut selections { let head = selection.head().to_display_point(&display_map); let new_head = movement::line_beginning(&display_map, head, *toggle_indent); selection.set_head(new_head.to_point(&display_map)); selection.goal = SelectionGoal::None; } self.update_selections(selections, Some(Autoscroll::Fit), cx); } pub fn delete_to_beginning_of_line( &mut self, _: &DeleteToBeginningOfLine, cx: &mut ViewContext, ) { self.start_transaction(cx); self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx); self.backspace(&Backspace, cx); self.end_transaction(cx); } pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); { for selection in &mut selections { let head = selection.head().to_display_point(&display_map); let new_head = movement::line_end(&display_map, head); let anchor = new_head.to_point(&display_map); selection.start = anchor.clone(); selection.end = anchor; selection.reversed = false; selection.goal = SelectionGoal::None; } } self.update_selections(selections, Some(Autoscroll::Fit), cx); } pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); for selection in &mut selections { let head = selection.head().to_display_point(&display_map); let new_head = movement::line_end(&display_map, head); selection.set_head(new_head.to_point(&display_map)); selection.goal = SelectionGoal::None; } self.update_selections(selections, Some(Autoscroll::Fit), cx); } pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext) { self.start_transaction(cx); self.select_to_end_of_line(&SelectToEndOfLine, cx); self.delete(&Delete, cx); self.end_transaction(cx); } pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext) { self.start_transaction(cx); self.select_to_end_of_line(&SelectToEndOfLine, cx); self.cut(&Cut, cx); self.end_transaction(cx); } pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext) { if matches!(self.mode, EditorMode::SingleLine) { cx.propagate_action(); return; } let selection = Selection { id: post_inc(&mut self.next_selection_id), start: 0, end: 0, reversed: false, goal: SelectionGoal::None, }; self.update_selections(vec![selection], Some(Autoscroll::Fit), cx); } pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext) { let mut selection = self.local_selections::(cx).last().unwrap().clone(); selection.set_head(Point::zero()); self.update_selections(vec![selection], Some(Autoscroll::Fit), cx); } pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext) { if matches!(self.mode, EditorMode::SingleLine) { cx.propagate_action(); return; } let cursor = self.buffer.read(cx).read(cx).len(); let selection = Selection { id: post_inc(&mut self.next_selection_id), start: cursor, end: cursor, reversed: false, goal: SelectionGoal::None, }; self.update_selections(vec![selection], Some(Autoscroll::Fit), cx); } pub fn set_nav_history(&mut self, nav_history: Option) { self.nav_history = nav_history; } pub fn nav_history(&self) -> Option<&ItemNavHistory> { self.nav_history.as_ref() } fn push_to_nav_history( &self, position: Anchor, new_position: Option, cx: &mut ViewContext, ) { if let Some(nav_history) = &self.nav_history { let buffer = self.buffer.read(cx).read(cx); let offset = position.to_offset(&buffer); let point = position.to_point(&buffer); drop(buffer); if let Some(new_position) = new_position { let row_delta = (new_position.row as i64 - point.row as i64).abs(); if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA { return; } } nav_history.push(Some(NavigationData { anchor: position, offset, })); } } pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext) { let mut selection = self.local_selections::(cx).first().unwrap().clone(); selection.set_head(self.buffer.read(cx).read(cx).len()); self.update_selections(vec![selection], Some(Autoscroll::Fit), cx); } pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext) { let selection = Selection { id: post_inc(&mut self.next_selection_id), start: 0, end: self.buffer.read(cx).read(cx).len(), reversed: false, goal: SelectionGoal::None, }; self.update_selections(vec![selection], None, cx); } pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); let max_point = display_map.buffer_snapshot.max_point(); for selection in &mut selections { let rows = selection.spanned_rows(true, &display_map); selection.start = Point::new(rows.start, 0); selection.end = cmp::min(max_point, Point::new(rows.end, 0)); selection.reversed = false; } self.update_selections(selections, Some(Autoscroll::Fit), cx); } pub fn split_selection_into_lines( &mut self, _: &SplitSelectionIntoLines, cx: &mut ViewContext, ) { let mut to_unfold = Vec::new(); let mut new_selections = Vec::new(); { let selections = self.local_selections::(cx); let buffer = self.buffer.read(cx).read(cx); for selection in selections { for row in selection.start.row..selection.end.row { let cursor = Point::new(row, buffer.line_len(row)); new_selections.push(Selection { id: post_inc(&mut self.next_selection_id), start: cursor, end: cursor, reversed: false, goal: SelectionGoal::None, }); } new_selections.push(Selection { id: selection.id, start: selection.end, end: selection.end, reversed: false, goal: SelectionGoal::None, }); to_unfold.push(selection.start..selection.end); } } self.unfold_ranges(to_unfold, cx); self.update_selections(new_selections, Some(Autoscroll::Fit), cx); } pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext) { self.add_selection(true, cx); } pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext) { self.add_selection(false, cx); } fn add_selection(&mut self, above: bool, cx: &mut ViewContext) { let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let mut selections = self.local_selections::(cx); let mut state = self.add_selections_state.take().unwrap_or_else(|| { let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone(); let range = oldest_selection.display_range(&display_map).sorted(); let columns = cmp::min(range.start.column(), range.end.column()) ..cmp::max(range.start.column(), range.end.column()); selections.clear(); let mut stack = Vec::new(); for row in range.start.row()..=range.end.row() { if let Some(selection) = self.build_columnar_selection( &display_map, row, &columns, oldest_selection.reversed, ) { stack.push(selection.id); selections.push(selection); } } if above { stack.reverse(); } AddSelectionsState { above, stack } }); let last_added_selection = *state.stack.last().unwrap(); let mut new_selections = Vec::new(); if above == state.above { let end_row = if above { 0 } else { display_map.max_point().row() }; 'outer: for selection in selections { if selection.id == last_added_selection { let range = selection.display_range(&display_map).sorted(); debug_assert_eq!(range.start.row(), range.end.row()); let mut row = range.start.row(); let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal { start..end } else { cmp::min(range.start.column(), range.end.column()) ..cmp::max(range.start.column(), range.end.column()) }; while row != end_row { if above { row -= 1; } else { row += 1; } if let Some(new_selection) = self.build_columnar_selection( &display_map, row, &columns, selection.reversed, ) { state.stack.push(new_selection.id); if above { new_selections.push(new_selection); new_selections.push(selection); } else { new_selections.push(selection); new_selections.push(new_selection); } continue 'outer; } } } new_selections.push(selection); } } else { new_selections = selections; new_selections.retain(|s| s.id != last_added_selection); state.stack.pop(); } self.update_selections(new_selections, Some(Autoscroll::Fit), cx); if state.stack.len() > 1 { self.add_selections_state = Some(state); } } pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext) { let replace_newest = action.0; let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let buffer = &display_map.buffer_snapshot; let mut selections = self.local_selections::(cx); if let Some(mut select_next_state) = self.select_next_state.take() { let query = &select_next_state.query; if !select_next_state.done { let first_selection = selections.iter().min_by_key(|s| s.id).unwrap(); let last_selection = selections.iter().max_by_key(|s| s.id).unwrap(); let mut next_selected_range = None; let bytes_after_last_selection = buffer.bytes_in_range(last_selection.end..buffer.len()); let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start); let query_matches = query .stream_find_iter(bytes_after_last_selection) .map(|result| (last_selection.end, result)) .chain( query .stream_find_iter(bytes_before_first_selection) .map(|result| (0, result)), ); for (start_offset, query_match) in query_matches { let query_match = query_match.unwrap(); // can only fail due to I/O let offset_range = start_offset + query_match.start()..start_offset + query_match.end(); let display_range = offset_range.start.to_display_point(&display_map) ..offset_range.end.to_display_point(&display_map); if !select_next_state.wordwise || (!movement::is_inside_word(&display_map, display_range.start) && !movement::is_inside_word(&display_map, display_range.end)) { next_selected_range = Some(offset_range); break; } } if let Some(next_selected_range) = next_selected_range { if replace_newest { if let Some(newest_id) = selections.iter().max_by_key(|s| s.id).map(|s| s.id) { selections.retain(|s| s.id != newest_id); } } selections.push(Selection { id: post_inc(&mut self.next_selection_id), start: next_selected_range.start, end: next_selected_range.end, reversed: false, goal: SelectionGoal::None, }); self.update_selections(selections, Some(Autoscroll::Newest), cx); } else { select_next_state.done = true; } } self.select_next_state = Some(select_next_state); } else if selections.len() == 1 { let selection = selections.last_mut().unwrap(); if selection.start == selection.end { let word_range = movement::surrounding_word( &display_map, selection.start.to_display_point(&display_map), ); selection.start = word_range.start.to_offset(&display_map, Bias::Left); selection.end = word_range.end.to_offset(&display_map, Bias::Left); selection.goal = SelectionGoal::None; selection.reversed = false; let query = buffer .text_for_range(selection.start..selection.end) .collect::(); let select_state = SelectNextState { query: AhoCorasick::new_auto_configured(&[query]), wordwise: true, done: false, }; self.update_selections(selections, Some(Autoscroll::Newest), cx); self.select_next_state = Some(select_state); } else { let query = buffer .text_for_range(selection.start..selection.end) .collect::(); self.select_next_state = Some(SelectNextState { query: AhoCorasick::new_auto_configured(&[query]), wordwise: false, done: false, }); self.select_next(action, cx); } } } pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext) { // Get the line comment prefix. Split its trailing whitespace into a separate string, // as that portion won't be used for detecting if a line is a comment. let full_comment_prefix = if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) { prefix.to_string() } else { return; }; let comment_prefix = full_comment_prefix.trim_end_matches(' '); let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..]; self.start_transaction(cx); let mut selections = self.local_selections::(cx); let mut all_selection_lines_are_comments = true; let mut edit_ranges = Vec::new(); let mut last_toggled_row = None; self.buffer.update(cx, |buffer, cx| { for selection in &mut selections { edit_ranges.clear(); let snapshot = buffer.snapshot(cx); let end_row = if selection.end.row > selection.start.row && selection.end.column == 0 { selection.end.row } else { selection.end.row + 1 }; for row in selection.start.row..end_row { // If multiple selections contain a given row, avoid processing that // row more than once. if last_toggled_row == Some(row) { continue; } else { last_toggled_row = Some(row); } if snapshot.is_line_blank(row) { continue; } let start = Point::new(row, snapshot.indent_column_for_line(row)); let mut line_bytes = snapshot .bytes_in_range(start..snapshot.max_point()) .flatten() .copied(); // If this line currently begins with the line comment prefix, then record // the range containing the prefix. if all_selection_lines_are_comments && line_bytes .by_ref() .take(comment_prefix.len()) .eq(comment_prefix.bytes()) { // Include any whitespace that matches the comment prefix. let matching_whitespace_len = line_bytes .zip(comment_prefix_whitespace.bytes()) .take_while(|(a, b)| a == b) .count() as u32; let end = Point::new( row, start.column + comment_prefix.len() as u32 + matching_whitespace_len, ); edit_ranges.push(start..end); } // If this line does not begin with the line comment prefix, then record // the position where the prefix should be inserted. else { all_selection_lines_are_comments = false; edit_ranges.push(start..start); } } if !edit_ranges.is_empty() { if all_selection_lines_are_comments { buffer.edit(edit_ranges.iter().cloned(), "", cx); } else { let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap(); let edit_ranges = edit_ranges.iter().map(|range| { let position = Point::new(range.start.row, min_column); position..position }); buffer.edit(edit_ranges, &full_comment_prefix, cx); } } } }); self.update_selections( self.local_selections::(cx), Some(Autoscroll::Fit), cx, ); self.end_transaction(cx); } pub fn select_larger_syntax_node( &mut self, _: &SelectLargerSyntaxNode, cx: &mut ViewContext, ) { let old_selections = self.local_selections::(cx).into_boxed_slice(); let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let buffer = self.buffer.read(cx).snapshot(cx); let mut stack = mem::take(&mut self.select_larger_syntax_node_stack); let mut selected_larger_node = false; let new_selections = old_selections .iter() .map(|selection| { let old_range = selection.start..selection.end; let mut new_range = old_range.clone(); while let Some(containing_range) = buffer.range_for_syntax_ancestor(new_range.clone()) { new_range = containing_range; if !display_map.intersects_fold(new_range.start) && !display_map.intersects_fold(new_range.end) { break; } } selected_larger_node |= new_range != old_range; Selection { id: selection.id, start: new_range.start, end: new_range.end, goal: SelectionGoal::None, reversed: selection.reversed, } }) .collect::>(); if selected_larger_node { stack.push(old_selections); self.update_selections(new_selections, Some(Autoscroll::Fit), cx); } self.select_larger_syntax_node_stack = stack; } pub fn select_smaller_syntax_node( &mut self, _: &SelectSmallerSyntaxNode, cx: &mut ViewContext, ) { let mut stack = mem::take(&mut self.select_larger_syntax_node_stack); if let Some(selections) = stack.pop() { self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx); } self.select_larger_syntax_node_stack = stack; } pub fn move_to_enclosing_bracket( &mut self, _: &MoveToEnclosingBracket, cx: &mut ViewContext, ) { let mut selections = self.local_selections::(cx); let buffer = self.buffer.read(cx).snapshot(cx); for selection in &mut selections { if let Some((open_range, close_range)) = buffer.enclosing_bracket_ranges(selection.start..selection.end) { let close_range = close_range.to_inclusive(); let destination = if close_range.contains(&selection.start) && close_range.contains(&selection.end) { open_range.end } else { *close_range.start() }; selection.start = destination; selection.end = destination; } } self.update_selections(selections, Some(Autoscroll::Fit), cx); } pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext) { let buffer = self.buffer.read(cx).snapshot(cx); let selection = self.newest_selection::(&buffer); let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| { active_diagnostics .primary_range .to_offset(&buffer) .to_inclusive() }); let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() { if active_primary_range.contains(&selection.head()) { *active_primary_range.end() } else { selection.head() } } else { selection.head() }; loop { let next_group = buffer .diagnostics_in_range::<_, usize>(search_start..buffer.len()) .find_map(|entry| { if entry.diagnostic.is_primary && !entry.range.is_empty() && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end()) { Some((entry.range, entry.diagnostic.group_id)) } else { None } }); if let Some((primary_range, group_id)) = next_group { self.activate_diagnostics(group_id, cx); self.update_selections( vec![Selection { id: selection.id, start: primary_range.start, end: primary_range.start, reversed: false, goal: SelectionGoal::None, }], Some(Autoscroll::Center), cx, ); break; } else if search_start == 0 { break; } else { // Cycle around to the start of the buffer. search_start = 0; } } } pub fn go_to_definition( workspace: &mut Workspace, _: &GoToDefinition, cx: &mut ViewContext, ) { let active_item = workspace.active_item(cx); let editor_handle = if let Some(editor) = active_item .as_ref() .and_then(|item| item.act_as::(cx)) { editor } else { return; }; let editor = editor_handle.read(cx); let buffer = editor.buffer.read(cx); let head = editor.newest_selection::(&buffer.read(cx)).head(); let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx); let definitions = workspace .project() .update(cx, |project, cx| project.definition(&buffer, head, cx)); cx.spawn(|workspace, mut cx| async move { let definitions = definitions.await?; workspace.update(&mut cx, |workspace, cx| { for definition in definitions { let range = definition .target_range .to_offset(definition.target_buffer.read(cx)); let target_editor_handle = workspace .open_item(BufferItemHandle(definition.target_buffer), cx) .downcast::() .unwrap(); target_editor_handle.update(cx, |target_editor, cx| { // When selecting a definition in a different buffer, disable the nav history // to avoid creating a history entry at the previous cursor location. let disabled_history = if editor_handle == target_editor_handle { None } else { target_editor.nav_history.take() }; target_editor.select_ranges([range], Some(Autoscroll::Center), cx); if disabled_history.is_some() { target_editor.nav_history = disabled_history; } }); } }); Ok::<(), anyhow::Error>(()) }) .detach_and_log_err(cx); } fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext) { if let Some(active_diagnostics) = self.active_diagnostics.as_mut() { let buffer = self.buffer.read(cx).snapshot(cx); let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer); let is_valid = buffer .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone()) .any(|entry| { entry.diagnostic.is_primary && !entry.range.is_empty() && entry.range.start == primary_range_start && entry.diagnostic.message == active_diagnostics.primary_message }); if is_valid != active_diagnostics.is_valid { active_diagnostics.is_valid = is_valid; let mut new_styles = HashMap::default(); for (block_id, diagnostic) in &active_diagnostics.blocks { new_styles.insert( *block_id, diagnostic_block_renderer( diagnostic.clone(), is_valid, self.build_settings.clone(), ), ); } self.display_map .update(cx, |display_map, _| display_map.replace_blocks(new_styles)); } } } fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext) { self.dismiss_diagnostics(cx); self.active_diagnostics = self.display_map.update(cx, |display_map, cx| { let buffer = self.buffer.read(cx).snapshot(cx); let mut primary_range = None; let mut primary_message = None; let mut group_end = Point::zero(); let diagnostic_group = buffer .diagnostic_group::(group_id) .map(|entry| { if entry.range.end > group_end { group_end = entry.range.end; } if entry.diagnostic.is_primary { primary_range = Some(entry.range.clone()); primary_message = Some(entry.diagnostic.message.clone()); } entry }) .collect::>(); let primary_range = primary_range.unwrap(); let primary_message = primary_message.unwrap(); let primary_range = buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end); let blocks = display_map .insert_blocks( diagnostic_group.iter().map(|entry| { let build_settings = self.build_settings.clone(); let diagnostic = entry.diagnostic.clone(); let message_height = diagnostic.message.lines().count() as u8; BlockProperties { position: buffer.anchor_after(entry.range.start), height: message_height, render: diagnostic_block_renderer(diagnostic, true, build_settings), disposition: BlockDisposition::Below, } }), cx, ) .into_iter() .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic)) .collect(); Some(ActiveDiagnosticGroup { primary_range, primary_message, blocks, is_valid: true, }) }); } fn dismiss_diagnostics(&mut self, cx: &mut ViewContext) { if let Some(active_diagnostic_group) = self.active_diagnostics.take() { self.display_map.update(cx, |display_map, cx| { display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx); }); cx.notify(); } } fn build_columnar_selection( &mut self, display_map: &DisplaySnapshot, row: u32, columns: &Range, reversed: bool, ) -> Option> { let is_empty = columns.start == columns.end; let line_len = display_map.line_len(row); if columns.start < line_len || (is_empty && columns.start == line_len) { let start = DisplayPoint::new(row, columns.start); let end = DisplayPoint::new(row, cmp::min(columns.end, line_len)); Some(Selection { id: post_inc(&mut self.next_selection_id), start: start.to_point(display_map), end: end.to_point(display_map), reversed, goal: SelectionGoal::ColumnRange { start: columns.start, end: columns.end, }, }) } else { None } } pub fn local_selections_in_range( &self, range: Range, display_map: &DisplaySnapshot, ) -> Vec> { let buffer = &display_map.buffer_snapshot; let start_ix = match self .selections .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap()) { Ok(ix) | Err(ix) => ix, }; let end_ix = match self .selections .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap()) { Ok(ix) => ix + 1, Err(ix) => ix, }; fn point_selection( selection: &Selection, buffer: &MultiBufferSnapshot, ) -> Selection { let start = selection.start.to_point(&buffer); let end = selection.end.to_point(&buffer); Selection { id: selection.id, start, end, reversed: selection.reversed, goal: selection.goal, } } self.selections[start_ix..end_ix] .iter() .chain( self.pending_selection .as_ref() .map(|pending| &pending.selection), ) .map(|s| point_selection(s, &buffer)) .collect() } pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec> where D: 'a + TextDimension + Ord + Sub, { let buffer = self.buffer.read(cx).snapshot(cx); let mut selections = self .resolve_selections::(self.selections.iter(), &buffer) .peekable(); let mut pending_selection = self.pending_selection::(&buffer); iter::from_fn(move || { if let Some(pending) = pending_selection.as_mut() { while let Some(next_selection) = selections.peek() { if pending.start <= next_selection.end && pending.end >= next_selection.start { let next_selection = selections.next().unwrap(); if next_selection.start < pending.start { pending.start = next_selection.start; } if next_selection.end > pending.end { pending.end = next_selection.end; } } else if next_selection.end < pending.start { return selections.next(); } else { break; } } pending_selection.take() } else { selections.next() } }) .collect() } fn resolve_selections<'a, D, I>( &self, selections: I, snapshot: &MultiBufferSnapshot, ) -> impl 'a + Iterator> where D: TextDimension + Ord + Sub, I: 'a + IntoIterator>, { let (to_summarize, selections) = selections.into_iter().tee(); let mut summaries = snapshot .summaries_for_anchors::(to_summarize.flat_map(|s| [&s.start, &s.end])) .into_iter(); selections.map(move |s| Selection { id: s.id, start: summaries.next().unwrap(), end: summaries.next().unwrap(), reversed: s.reversed, goal: s.goal, }) } fn pending_selection>( &self, snapshot: &MultiBufferSnapshot, ) -> Option> { self.pending_selection .as_ref() .map(|pending| self.resolve_selection(&pending.selection, &snapshot)) } fn resolve_selection>( &self, selection: &Selection, buffer: &MultiBufferSnapshot, ) -> Selection { Selection { id: selection.id, start: selection.start.summary::(&buffer), end: selection.end.summary::(&buffer), reversed: selection.reversed, goal: selection.goal, } } fn selection_count<'a>(&self) -> usize { let mut count = self.selections.len(); if self.pending_selection.is_some() { count += 1; } count } pub fn oldest_selection>( &self, snapshot: &MultiBufferSnapshot, ) -> Selection { self.selections .iter() .min_by_key(|s| s.id) .map(|selection| self.resolve_selection(selection, snapshot)) .or_else(|| self.pending_selection(snapshot)) .unwrap() } pub fn newest_selection>( &self, snapshot: &MultiBufferSnapshot, ) -> Selection { self.resolve_selection(self.newest_selection_internal().unwrap(), snapshot) } pub fn newest_selection_internal(&self) -> Option<&Selection> { self.pending_selection .as_ref() .map(|s| &s.selection) .or_else(|| self.selections.iter().max_by_key(|s| s.id)) } pub fn update_selections( &mut self, mut selections: Vec>, autoscroll: Option, cx: &mut ViewContext, ) where T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug, { let buffer = self.buffer.read(cx).snapshot(cx); let old_cursor_position = self.newest_selection_internal().map(|s| s.head()); selections.sort_unstable_by_key(|s| s.start); // Merge overlapping selections. let mut i = 1; while i < selections.len() { if selections[i - 1].end >= selections[i].start { let removed = selections.remove(i); if removed.start < selections[i - 1].start { selections[i - 1].start = removed.start; } if removed.end > selections[i - 1].end { selections[i - 1].end = removed.end; } } else { i += 1; } } self.pending_selection = None; self.add_selections_state = None; self.select_next_state = None; self.select_larger_syntax_node_stack.clear(); while let Some(autoclose_pair) = self.autoclose_stack.last() { let all_selections_inside_autoclose_ranges = if selections.len() == autoclose_pair.ranges.len() { selections .iter() .zip(autoclose_pair.ranges.iter().map(|r| r.to_point(&buffer))) .all(|(selection, autoclose_range)| { let head = selection.head().to_point(&buffer); autoclose_range.start <= head && autoclose_range.end >= head }) } else { false }; if all_selections_inside_autoclose_ranges { break; } else { self.autoclose_stack.pop(); } } if let Some(old_cursor_position) = old_cursor_position { let new_cursor_position = selections .iter() .max_by_key(|s| s.id) .map(|s| s.head().to_point(&buffer)); if new_cursor_position.is_some() { self.push_to_nav_history(old_cursor_position, new_cursor_position, cx); } } if let Some(autoscroll) = autoscroll { self.request_autoscroll(autoscroll, cx); } self.pause_cursor_blinking(cx); self.set_selections( Arc::from_iter(selections.into_iter().map(|selection| { let end_bias = if selection.end > selection.start { Bias::Left } else { Bias::Right }; Selection { id: selection.id, start: buffer.anchor_after(selection.start), end: buffer.anchor_at(selection.end, end_bias), reversed: selection.reversed, goal: selection.goal, } })), cx, ); } /// Compute new ranges for any selections that were located in excerpts that have /// since been removed. /// /// Returns a `HashMap` indicating which selections whose former head position /// was no longer present. The keys of the map are selection ids. The values are /// the id of the new excerpt where the head of the selection has been moved. pub fn refresh_selections(&mut self, cx: &mut ViewContext) -> HashMap { let snapshot = self.buffer.read(cx).read(cx); let anchors_with_status = snapshot.refresh_anchors( self.selections .iter() .flat_map(|selection| [&selection.start, &selection.end]), ); let offsets = snapshot.summaries_for_anchors::(anchors_with_status.iter().map(|a| &a.1)); let offsets = offsets.chunks(2); let statuses = anchors_with_status .chunks(2) .map(|a| (a[0].0 / 2, a[0].2, a[1].2)); let mut selections_with_lost_position = HashMap::default(); let new_selections = offsets .zip(statuses) .map(|(offsets, (selection_ix, kept_start, kept_end))| { let selection = &self.selections[selection_ix]; let kept_head = if selection.reversed { kept_start } else { kept_end }; if !kept_head { selections_with_lost_position .insert(selection.id, selection.head().excerpt_id.clone()); } Selection { id: selection.id, start: offsets[0], end: offsets[1], reversed: selection.reversed, goal: selection.goal, } }) .collect(); drop(snapshot); self.update_selections(new_selections, Some(Autoscroll::Fit), cx); selections_with_lost_position } fn set_selections(&mut self, selections: Arc<[Selection]>, cx: &mut ViewContext) { self.selections = selections; if self.focused { self.buffer.update(cx, |buffer, cx| { buffer.set_active_selections(&self.selections, cx) }); } } pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext) { self.autoscroll_request = Some(autoscroll); cx.notify(); } fn start_transaction(&mut self, cx: &mut ViewContext) { self.start_transaction_at(Instant::now(), cx); } fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext) { self.end_selection(cx); if let Some(tx_id) = self .buffer .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx)) { self.selection_history .insert(tx_id, (self.selections.clone(), None)); } } fn end_transaction(&mut self, cx: &mut ViewContext) { self.end_transaction_at(Instant::now(), cx); } fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext) { if let Some(tx_id) = self .buffer .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx)) { if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) { *end_selections = Some(self.selections.clone()); } else { log::error!("unexpectedly ended a transaction that wasn't started by this editor"); } } } pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext) { log::info!("Editor::page_up"); } pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext) { log::info!("Editor::page_down"); } pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext) { let mut fold_ranges = Vec::new(); let selections = self.local_selections::(cx); let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); for selection in selections { let range = selection.display_range(&display_map).sorted(); let buffer_start_row = range.start.to_point(&display_map).row; for row in (0..=range.end.row()).rev() { if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) { let fold_range = self.foldable_range_for_line(&display_map, row); if fold_range.end.row >= buffer_start_row { fold_ranges.push(fold_range); if row <= range.start.row() { break; } } } } } self.fold_ranges(fold_ranges, cx); } pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext) { let selections = self.local_selections::(cx); let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx)); let buffer = &display_map.buffer_snapshot; let ranges = selections .iter() .map(|s| { let range = s.display_range(&display_map).sorted(); let mut start = range.start.to_point(&display_map); let mut end = range.end.to_point(&display_map); start.column = 0; end.column = buffer.line_len(end.row); start..end }) .collect::>(); self.unfold_ranges(ranges, cx); } fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool { let max_point = display_map.max_point(); if display_row >= max_point.row() { false } else { let (start_indent, is_blank) = display_map.line_indent(display_row); if is_blank { false } else { for display_row in display_row + 1..=max_point.row() { let (indent, is_blank) = display_map.line_indent(display_row); if !is_blank { return indent > start_indent; } } false } } } fn foldable_range_for_line( &self, display_map: &DisplaySnapshot, start_row: u32, ) -> Range { let max_point = display_map.max_point(); let (start_indent, _) = display_map.line_indent(start_row); let start = DisplayPoint::new(start_row, display_map.line_len(start_row)); let mut end = None; for row in start_row + 1..=max_point.row() { let (indent, is_blank) = display_map.line_indent(row); if !is_blank && indent <= start_indent { end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1))); break; } } let end = end.unwrap_or(max_point); return start.to_point(display_map)..end.to_point(display_map); } pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext) { let selections = self.local_selections::(cx); let ranges = selections.into_iter().map(|s| s.start..s.end); self.fold_ranges(ranges, cx); } fn fold_ranges( &mut self, ranges: impl IntoIterator>, cx: &mut ViewContext, ) { let mut ranges = ranges.into_iter().peekable(); if ranges.peek().is_some() { self.display_map.update(cx, |map, cx| map.fold(ranges, cx)); self.request_autoscroll(Autoscroll::Fit, cx); cx.notify(); } } fn unfold_ranges(&mut self, ranges: Vec>, cx: &mut ViewContext) { if !ranges.is_empty() { self.display_map .update(cx, |map, cx| map.unfold(ranges, cx)); self.request_autoscroll(Autoscroll::Fit, cx); cx.notify(); } } pub fn insert_blocks( &mut self, blocks: impl IntoIterator>, cx: &mut ViewContext, ) -> Vec { let blocks = self .display_map .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx)); self.request_autoscroll(Autoscroll::Fit, cx); blocks } pub fn replace_blocks( &mut self, blocks: HashMap, cx: &mut ViewContext, ) { self.display_map .update(cx, |display_map, _| display_map.replace_blocks(blocks)); self.request_autoscroll(Autoscroll::Fit, cx); } pub fn remove_blocks(&mut self, block_ids: HashSet, cx: &mut ViewContext) { self.display_map.update(cx, |display_map, cx| { display_map.remove_blocks(block_ids, cx) }); } pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 { self.display_map .update(cx, |map, cx| map.snapshot(cx)) .longest_row() } pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint { self.display_map .update(cx, |map, cx| map.snapshot(cx)) .max_point() } pub fn text(&self, cx: &AppContext) -> String { self.buffer.read(cx).read(cx).text() } pub fn display_text(&self, cx: &mut MutableAppContext) -> String { self.display_map .update(cx, |map, cx| map.snapshot(cx)) .text() } pub fn set_wrap_width(&self, width: Option, cx: &mut MutableAppContext) -> bool { self.display_map .update(cx, |map, cx| map.set_wrap_width(width, cx)) } pub fn set_highlighted_rows(&mut self, rows: Option>) { self.highlighted_rows = rows; } pub fn highlighted_rows(&self) -> Option> { self.highlighted_rows.clone() } fn next_blink_epoch(&mut self) -> usize { self.blink_epoch += 1; self.blink_epoch } fn pause_cursor_blinking(&mut self, cx: &mut ViewContext) { if !self.focused { return; } self.show_local_cursors = true; cx.notify(); let epoch = self.next_blink_epoch(); cx.spawn(|this, mut cx| { let this = this.downgrade(); async move { Timer::after(CURSOR_BLINK_INTERVAL).await; if let Some(this) = cx.read(|cx| this.upgrade(cx)) { this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx)) } } }) .detach(); } fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext) { if epoch == self.blink_epoch { self.blinking_paused = false; self.blink_cursors(epoch, cx); } } fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext) { if epoch == self.blink_epoch && self.focused && !self.blinking_paused { self.show_local_cursors = !self.show_local_cursors; cx.notify(); let epoch = self.next_blink_epoch(); cx.spawn(|this, mut cx| { let this = this.downgrade(); async move { Timer::after(CURSOR_BLINK_INTERVAL).await; if let Some(this) = cx.read(|cx| this.upgrade(cx)) { this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx)); } } }) .detach(); } } pub fn show_local_cursors(&self) -> bool { self.show_local_cursors } fn on_buffer_changed(&mut self, _: ModelHandle, cx: &mut ViewContext) { self.refresh_active_diagnostics(cx); cx.notify(); } fn on_buffer_event( &mut self, _: ModelHandle, event: &language::Event, cx: &mut ViewContext, ) { match event { language::Event::Edited => cx.emit(Event::Edited), language::Event::Dirtied => cx.emit(Event::Dirtied), language::Event::Saved => cx.emit(Event::Saved), language::Event::FileHandleChanged => cx.emit(Event::TitleChanged), language::Event::Reloaded => cx.emit(Event::TitleChanged), language::Event::Closed => cx.emit(Event::Closed), _ => {} } } fn on_display_map_changed(&mut self, _: ModelHandle, cx: &mut ViewContext) { cx.notify(); } } impl EditorSnapshot { pub fn is_focused(&self) -> bool { self.is_focused } pub fn placeholder_text(&self) -> Option<&Arc> { self.placeholder_text.as_ref() } pub fn scroll_position(&self) -> Vector2F { compute_scroll_position( &self.display_snapshot, self.scroll_position, &self.scroll_top_anchor, ) } } impl Deref for EditorSnapshot { type Target = DisplaySnapshot; fn deref(&self) -> &Self::Target { &self.display_snapshot } } impl EditorSettings { #[cfg(any(test, feature = "test-support"))] pub fn test(cx: &AppContext) -> Self { use theme::{ContainedLabel, ContainedText, DiagnosticHeader, DiagnosticPathHeader}; Self { tab_size: 4, soft_wrap: SoftWrap::None, style: { let font_cache: &gpui::FontCache = cx.font_cache(); let font_family_name = Arc::from("Monaco"); let font_properties = Default::default(); let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap(); let font_id = font_cache .select_font(font_family_id, &font_properties) .unwrap(); let text = gpui::fonts::TextStyle { font_family_name, font_family_id, font_id, font_size: 14., color: gpui::color::Color::from_u32(0xff0000ff), font_properties, underline: None, }; let default_diagnostic_style = DiagnosticStyle { message: text.clone().into(), header: Default::default(), text_scale_factor: 1., }; EditorStyle { text: text.clone(), placeholder_text: None, background: Default::default(), gutter_background: Default::default(), gutter_padding_factor: 2., active_line_background: Default::default(), highlighted_line_background: Default::default(), line_number: Default::default(), line_number_active: Default::default(), selection: Default::default(), guest_selections: Default::default(), syntax: Default::default(), diagnostic_path_header: DiagnosticPathHeader { container: Default::default(), filename: ContainedText { container: Default::default(), text: text.clone(), }, path: ContainedText { container: Default::default(), text: text.clone(), }, text_scale_factor: 1., }, diagnostic_header: DiagnosticHeader { container: Default::default(), message: ContainedLabel { container: Default::default(), label: text.clone().into(), }, code: ContainedText { container: Default::default(), text: text.clone(), }, icon_width_factor: 1., text_scale_factor: 1., }, error_diagnostic: default_diagnostic_style.clone(), invalid_error_diagnostic: default_diagnostic_style.clone(), warning_diagnostic: default_diagnostic_style.clone(), invalid_warning_diagnostic: default_diagnostic_style.clone(), information_diagnostic: default_diagnostic_style.clone(), invalid_information_diagnostic: default_diagnostic_style.clone(), hint_diagnostic: default_diagnostic_style.clone(), invalid_hint_diagnostic: default_diagnostic_style.clone(), } }, } } } fn compute_scroll_position( snapshot: &DisplaySnapshot, mut scroll_position: Vector2F, scroll_top_anchor: &Option, ) -> Vector2F { if let Some(anchor) = scroll_top_anchor { let scroll_top = anchor.to_display_point(snapshot).row() as f32; scroll_position.set_y(scroll_top + scroll_position.y()); } else { scroll_position.set_y(0.); } scroll_position } #[derive(Copy, Clone)] pub enum Event { Activate, Edited, Blurred, Dirtied, Saved, TitleChanged, Closed, } impl Entity for Editor { type Event = Event; } impl View for Editor { fn render(&mut self, cx: &mut RenderContext) -> ElementBox { let settings = (self.build_settings)(cx); self.display_map.update(cx, |map, cx| { map.set_font( settings.style.text.font_id, settings.style.text.font_size, cx, ) }); EditorElement::new(self.handle.clone(), settings).boxed() } fn ui_name() -> &'static str { "Editor" } fn on_focus(&mut self, cx: &mut ViewContext) { self.focused = true; self.blink_cursors(self.blink_epoch, cx); self.buffer.update(cx, |buffer, cx| { buffer.avoid_grouping_next_transaction(cx); buffer.set_active_selections(&self.selections, cx) }); } fn on_blur(&mut self, cx: &mut ViewContext) { self.focused = false; self.show_local_cursors = false; self.buffer .update(cx, |buffer, cx| buffer.remove_active_selections(cx)); cx.emit(Event::Blurred); cx.notify(); } fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context { let mut cx = Self::default_keymap_context(); let mode = match self.mode { EditorMode::SingleLine => "single_line", EditorMode::AutoHeight { .. } => "auto_height", EditorMode::Full => "full", }; cx.map.insert("mode".into(), mode.into()); cx } } impl SelectionExt for Selection { fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range { let start = self.start.to_point(buffer); let end = self.end.to_point(buffer); if self.reversed { end..start } else { start..end } } fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range { let start = self.start.to_offset(buffer); let end = self.end.to_offset(buffer); if self.reversed { end..start } else { start..end } } fn display_range(&self, map: &DisplaySnapshot) -> Range { let start = self .start .to_point(&map.buffer_snapshot) .to_display_point(map); let end = self .end .to_point(&map.buffer_snapshot) .to_display_point(map); if self.reversed { end..start } else { start..end } } fn spanned_rows( &self, include_end_if_at_line_start: bool, map: &DisplaySnapshot, ) -> Range { let start = self.start.to_point(&map.buffer_snapshot); let mut end = self.end.to_point(&map.buffer_snapshot); if !include_end_if_at_line_start && start.row != end.row && end.column == 0 { end.row -= 1; } let buffer_start = map.prev_line_boundary(start).0; let buffer_end = map.next_line_boundary(end).0; buffer_start.row..buffer_end.row + 1 } } pub fn diagnostic_block_renderer( diagnostic: Diagnostic, is_valid: bool, build_settings: BuildSettings, ) -> RenderBlock { let mut highlighted_lines = Vec::new(); for line in diagnostic.message.lines() { highlighted_lines.push(highlight_diagnostic_message(line)); } Arc::new(move |cx: &BlockContext| { let settings = build_settings(cx); let style = diagnostic_style(diagnostic.severity, is_valid, &settings.style); let font_size = (style.text_scale_factor * settings.style.text.font_size).round(); Flex::column() .with_children(highlighted_lines.iter().map(|(line, highlights)| { Label::new( line.clone(), style.message.clone().with_font_size(font_size), ) .with_highlights(highlights.clone()) .contained() .with_margin_left(cx.anchor_x) .boxed() })) .aligned() .left() .boxed() }) } pub fn highlight_diagnostic_message(message: &str) -> (String, Vec) { let mut message_without_backticks = String::new(); let mut prev_offset = 0; let mut inside_block = false; let mut highlights = Vec::new(); for (match_ix, (offset, _)) in message .match_indices('`') .chain([(message.len(), "")]) .enumerate() { message_without_backticks.push_str(&message[prev_offset..offset]); if inside_block { highlights.extend(prev_offset - match_ix..offset - match_ix); } inside_block = !inside_block; prev_offset = offset + 1; } (message_without_backticks, highlights) } pub fn diagnostic_style( severity: DiagnosticSeverity, valid: bool, style: &EditorStyle, ) -> DiagnosticStyle { match (severity, valid) { (DiagnosticSeverity::ERROR, true) => style.error_diagnostic.clone(), (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic.clone(), (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic.clone(), (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic.clone(), (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic.clone(), (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic.clone(), (DiagnosticSeverity::HINT, true) => style.hint_diagnostic.clone(), (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic.clone(), _ => DiagnosticStyle { message: style.text.clone().into(), header: Default::default(), text_scale_factor: 1., }, } } pub fn settings_builder( buffer: WeakModelHandle, settings: watch::Receiver, ) -> BuildSettings { Arc::new(move |cx| { let settings = settings.borrow(); let font_cache = cx.font_cache(); let font_family_id = settings.buffer_font_family; let font_family_name = cx.font_cache().family_name(font_family_id).unwrap(); let font_properties = Default::default(); let font_id = font_cache .select_font(font_family_id, &font_properties) .unwrap(); let font_size = settings.buffer_font_size; let mut theme = settings.theme.editor.clone(); theme.text = TextStyle { color: theme.text.color, font_family_name, font_family_id, font_id, font_size, font_properties, underline: None, }; let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx)); let soft_wrap = match settings.soft_wrap(language) { workspace::settings::SoftWrap::None => SoftWrap::None, workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth, workspace::settings::SoftWrap::PreferredLineLength => { SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1)) } }; EditorSettings { tab_size: settings.tab_size, soft_wrap, style: theme, } }) } #[cfg(test)] mod tests { use super::*; use language::LanguageConfig; use std::{cell::RefCell, rc::Rc, time::Instant}; use text::Point; use unindent::Unindent; use util::test::sample_text; #[gpui::test] fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) { let mut now = Instant::now(); let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx)); let group_interval = buffer.read(cx).transaction_group_interval(); let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx)); let settings = EditorSettings::test(cx); let (_, editor) = cx.add_window(Default::default(), |cx| { build_editor(buffer.clone(), settings, cx) }); editor.update(cx, |editor, cx| { editor.start_transaction_at(now, cx); editor.select_ranges([2..4], None, cx); editor.insert("cd", cx); editor.end_transaction_at(now, cx); assert_eq!(editor.text(cx), "12cd56"); assert_eq!(editor.selected_ranges(cx), vec![4..4]); editor.start_transaction_at(now, cx); editor.select_ranges([4..5], None, cx); editor.insert("e", cx); editor.end_transaction_at(now, cx); assert_eq!(editor.text(cx), "12cde6"); assert_eq!(editor.selected_ranges(cx), vec![5..5]); now += group_interval + Duration::from_millis(1); editor.select_ranges([2..2], None, cx); // Simulate an edit in another editor buffer.update(cx, |buffer, cx| { buffer.start_transaction_at(now, cx); buffer.edit([0..1], "a", cx); buffer.edit([1..1], "b", cx); buffer.end_transaction_at(now, cx); }); assert_eq!(editor.text(cx), "ab2cde6"); assert_eq!(editor.selected_ranges(cx), vec![3..3]); // Last transaction happened past the group interval in a different editor. // Undo it individually and don't restore selections. editor.undo(&Undo, cx); assert_eq!(editor.text(cx), "12cde6"); assert_eq!(editor.selected_ranges(cx), vec![2..2]); // First two transactions happened within the group interval in this editor. // Undo them together and restore selections. editor.undo(&Undo, cx); editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op. assert_eq!(editor.text(cx), "123456"); assert_eq!(editor.selected_ranges(cx), vec![0..0]); // Redo the first two transactions together. editor.redo(&Redo, cx); assert_eq!(editor.text(cx), "12cde6"); assert_eq!(editor.selected_ranges(cx), vec![5..5]); // Redo the last transaction on its own. editor.redo(&Redo, cx); assert_eq!(editor.text(cx), "ab2cde6"); assert_eq!(editor.selected_ranges(cx), vec![6..6]); // Test empty transactions. editor.start_transaction_at(now, cx); editor.end_transaction_at(now, cx); editor.undo(&Undo, cx); assert_eq!(editor.text(cx), "12cde6"); }); } #[gpui::test] fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) { let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx); let settings = EditorSettings::test(cx); let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx)); editor.update(cx, |view, cx| { view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx); }); assert_eq!( editor.update(cx, |view, cx| view.selected_display_ranges(cx)), [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)] ); editor.update(cx, |view, cx| { view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx); }); assert_eq!( editor.update(cx, |view, cx| view.selected_display_ranges(cx)), [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)] ); editor.update(cx, |view, cx| { view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx); }); assert_eq!( editor.update(cx, |view, cx| view.selected_display_ranges(cx)), [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)] ); editor.update(cx, |view, cx| { view.end_selection(cx); view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx); }); assert_eq!( editor.update(cx, |view, cx| view.selected_display_ranges(cx)), [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)] ); editor.update(cx, |view, cx| { view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx); view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx); }); assert_eq!( editor.update(cx, |view, cx| view.selected_display_ranges(cx)), [ DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1), DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0) ] ); editor.update(cx, |view, cx| { view.end_selection(cx); }); assert_eq!( editor.update(cx, |view, cx| view.selected_display_ranges(cx)), [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)] ); } #[gpui::test] fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) { let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx); let settings = EditorSettings::test(cx); let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx)); view.update(cx, |view, cx| { view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx); assert_eq!( view.selected_display_ranges(cx), [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)] ); }); view.update(cx, |view, cx| { view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx); assert_eq!( view.selected_display_ranges(cx), [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)] ); }); view.update(cx, |view, cx| { view.cancel(&Cancel, cx); view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx); assert_eq!( view.selected_display_ranges(cx), [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)] ); }); } #[gpui::test] fn test_navigation_history(cx: &mut gpui::MutableAppContext) { cx.add_window(Default::default(), |cx| { use workspace::ItemView; let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default())); let settings = EditorSettings::test(&cx); let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx); let mut editor = build_editor(buffer.clone(), settings, cx); editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle())); // Move the cursor a small distance. // Nothing is added to the navigation history. editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx); editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx); assert!(nav_history.borrow_mut().pop_backward().is_none()); // Move the cursor a large distance. // The history can jump back to the previous position. editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx); let nav_entry = nav_history.borrow_mut().pop_backward().unwrap(); editor.navigate(nav_entry.data.unwrap(), cx); assert_eq!(nav_entry.item_view.id(), cx.view_id()); assert_eq!( editor.selected_display_ranges(cx), &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)] ); // Move the cursor a small distance via the mouse. // Nothing is added to the navigation history. editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx); editor.end_selection(cx); assert_eq!( editor.selected_display_ranges(cx), &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)] ); assert!(nav_history.borrow_mut().pop_backward().is_none()); // Move the cursor a large distance via the mouse. // The history can jump back to the previous position. editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx); editor.end_selection(cx); assert_eq!( editor.selected_display_ranges(cx), &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)] ); let nav_entry = nav_history.borrow_mut().pop_backward().unwrap(); editor.navigate(nav_entry.data.unwrap(), cx); assert_eq!(nav_entry.item_view.id(), cx.view_id()); assert_eq!( editor.selected_display_ranges(cx), &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)] ); editor }); } #[gpui::test] fn test_cancel(cx: &mut gpui::MutableAppContext) { let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx); let settings = EditorSettings::test(cx); let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx)); view.update(cx, |view, cx| { view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx); view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx); view.end_selection(cx); view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx); view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx); view.end_selection(cx); assert_eq!( view.selected_display_ranges(cx), [ DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3), DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1), ] ); }); view.update(cx, |view, cx| { view.cancel(&Cancel, cx); assert_eq!( view.selected_display_ranges(cx), [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)] ); }); view.update(cx, |view, cx| { view.cancel(&Cancel, cx); assert_eq!( view.selected_display_ranges(cx), [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)] ); }); } #[gpui::test] fn test_fold(cx: &mut gpui::MutableAppContext) { let buffer = MultiBuffer::build_simple( &" impl Foo { // Hello! fn a() { 1 } fn b() { 2 } fn c() { 3 } } " .unindent(), cx, ); let settings = EditorSettings::test(&cx); let (_, view) = cx.add_window(Default::default(), |cx| { build_editor(buffer.clone(), settings, cx) }); view.update(cx, |view, cx| { view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx); view.fold(&Fold, cx); assert_eq!( view.display_text(cx), " impl Foo { // Hello! fn a() { 1 } fn b() {… } fn c() {… } } " .unindent(), ); view.fold(&Fold, cx); assert_eq!( view.display_text(cx), " impl Foo {… } " .unindent(), ); view.unfold(&Unfold, cx); assert_eq!( view.display_text(cx), " impl Foo { // Hello! fn a() { 1 } fn b() {… } fn c() {… } } " .unindent(), ); view.unfold(&Unfold, cx); assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text()); }); } #[gpui::test] fn test_move_cursor(cx: &mut gpui::MutableAppContext) { let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx); let settings = EditorSettings::test(&cx); let (_, view) = cx.add_window(Default::default(), |cx| { build_editor(buffer.clone(), settings, cx) }); buffer.update(cx, |buffer, cx| { buffer.edit( vec![ Point::new(1, 0)..Point::new(1, 0), Point::new(1, 1)..Point::new(1, 1), ], "\t", cx, ); }); view.update(cx, |view, cx| { assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)] ); view.move_down(&MoveDown, cx); assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)] ); view.move_right(&MoveRight, cx); assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)] ); view.move_left(&MoveLeft, cx); assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)] ); view.move_up(&MoveUp, cx); assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)] ); view.move_to_end(&MoveToEnd, cx); assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)] ); view.move_to_beginning(&MoveToBeginning, cx); assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)] ); view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx); view.select_to_beginning(&SelectToBeginning, cx); assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)] ); view.select_to_end(&SelectToEnd, cx); assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)] ); }); } #[gpui::test] fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) { let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx); let settings = EditorSettings::test(&cx); let (_, view) = cx.add_window(Default::default(), |cx| { build_editor(buffer.clone(), settings, cx) }); assert_eq!('ⓐ'.len_utf8(), 3); assert_eq!('α'.len_utf8(), 2); view.update(cx, |view, cx| { view.fold_ranges( vec![ Point::new(0, 6)..Point::new(0, 12), Point::new(1, 2)..Point::new(1, 4), Point::new(2, 4)..Point::new(2, 8), ], cx, ); assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n"); view.move_right(&MoveRight, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(0, "ⓐ".len())] ); view.move_right(&MoveRight, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(0, "ⓐⓑ".len())] ); view.move_right(&MoveRight, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())] ); view.move_down(&MoveDown, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(1, "ab…".len())] ); view.move_left(&MoveLeft, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(1, "ab".len())] ); view.move_left(&MoveLeft, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(1, "a".len())] ); view.move_down(&MoveDown, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(2, "α".len())] ); view.move_right(&MoveRight, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(2, "αβ".len())] ); view.move_right(&MoveRight, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(2, "αβ…".len())] ); view.move_right(&MoveRight, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(2, "αβ…ε".len())] ); view.move_up(&MoveUp, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(1, "ab…e".len())] ); view.move_up(&MoveUp, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(0, "ⓐⓑ…ⓔ".len())] ); view.move_left(&MoveLeft, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(0, "ⓐⓑ…".len())] ); view.move_left(&MoveLeft, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(0, "ⓐⓑ".len())] ); view.move_left(&MoveLeft, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(0, "ⓐ".len())] ); }); } #[gpui::test] fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) { let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx); let settings = EditorSettings::test(&cx); let (_, view) = cx.add_window(Default::default(), |cx| { build_editor(buffer.clone(), settings, cx) }); view.update(cx, |view, cx| { view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx); view.move_down(&MoveDown, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(1, "abcd".len())] ); view.move_down(&MoveDown, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(2, "αβγ".len())] ); view.move_down(&MoveDown, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(3, "abcd".len())] ); view.move_down(&MoveDown, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())] ); view.move_up(&MoveUp, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(3, "abcd".len())] ); view.move_up(&MoveUp, cx); assert_eq!( view.selected_display_ranges(cx), &[empty_range(2, "αβγ".len())] ); }); } #[gpui::test] fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) { let buffer = MultiBuffer::build_simple("abc\n def", cx); let settings = EditorSettings::test(&cx); let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx)); view.update(cx, |view, cx| { view.select_display_ranges( &[ DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1), DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4), ], cx, ); }); view.update(cx, |view, cx| { view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0), DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2), ] ); }); view.update(cx, |view, cx| { view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0), DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0), ] ); }); view.update(cx, |view, cx| { view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0), DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2), ] ); }); view.update(cx, |view, cx| { view.move_to_end_of_line(&MoveToEndOfLine, cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3), DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5), ] ); }); // Moving to the end of line again is a no-op. view.update(cx, |view, cx| { view.move_to_end_of_line(&MoveToEndOfLine, cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3), DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5), ] ); }); view.update(cx, |view, cx| { view.move_left(&MoveLeft, cx); view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0), DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2), ] ); }); view.update(cx, |view, cx| { view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0), DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0), ] ); }); view.update(cx, |view, cx| { view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0), DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2), ] ); }); view.update(cx, |view, cx| { view.select_to_end_of_line(&SelectToEndOfLine, cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3), DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5), ] ); }); view.update(cx, |view, cx| { view.delete_to_end_of_line(&DeleteToEndOfLine, cx); assert_eq!(view.display_text(cx), "ab\n de"); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2), DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4), ] ); }); view.update(cx, |view, cx| { view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx); assert_eq!(view.display_text(cx), "\n"); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0), DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0), ] ); }); } #[gpui::test] fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) { let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx); let settings = EditorSettings::test(&cx); let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx)); view.update(cx, |view, cx| { view.select_display_ranges( &[ DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11), DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4), ], cx, ); }); view.update(cx, |view, cx| { view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9), DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3), ] ); }); view.update(cx, |view, cx| { view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7), DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2), ] ); }); view.update(cx, |view, cx| { view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4), DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0), ] ); }); view.update(cx, |view, cx| { view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0), DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0), ] ); }); view.update(cx, |view, cx| { view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0), DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23), ] ); }); view.update(cx, |view, cx| { view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3), DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24), ] ); }); view.update(cx, |view, cx| { view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7), DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0), ] ); }); view.update(cx, |view, cx| { view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9), DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3), ] ); }); view.update(cx, |view, cx| { view.move_right(&MoveRight, cx); view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9), DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3), ] ); }); view.update(cx, |view, cx| { view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7), DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2), ] ); }); view.update(cx, |view, cx| { view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9), DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3), ] ); }); } #[gpui::test] fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) { let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx); let settings = EditorSettings::test(&cx); let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx)); view.update(cx, |view, cx| { view.set_wrap_width(Some(140.), cx); assert_eq!( view.display_text(cx), "use one::{\n two::three::\n four::five\n};" ); view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx); view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx); assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)] ); view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx); assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)] ); view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx); assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)] ); view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx); assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)] ); view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx); assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)] ); view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx); assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)] ); }); } #[gpui::test] fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) { let buffer = MultiBuffer::build_simple("one two three four", cx); let settings = EditorSettings::test(&cx); let (_, view) = cx.add_window(Default::default(), |cx| { build_editor(buffer.clone(), settings, cx) }); view.update(cx, |view, cx| { view.select_display_ranges( &[ // an empty selection - the preceding word fragment is deleted DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2), // characters selected - they are deleted DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12), ], cx, ); view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx); }); assert_eq!(buffer.read(cx).read(cx).text(), "e two te four"); view.update(cx, |view, cx| { view.select_display_ranges( &[ // an empty selection - the following word fragment is deleted DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3), // characters selected - they are deleted DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10), ], cx, ); view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx); }); assert_eq!(buffer.read(cx).read(cx).text(), "e t te our"); } #[gpui::test] fn test_newline(cx: &mut gpui::MutableAppContext) { let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx); let settings = EditorSettings::test(&cx); let (_, view) = cx.add_window(Default::default(), |cx| { build_editor(buffer.clone(), settings, cx) }); view.update(cx, |view, cx| { view.select_display_ranges( &[ DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2), DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2), DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6), ], cx, ); view.newline(&Newline, cx); assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n"); }); } #[gpui::test] fn test_indent_outdent(cx: &mut gpui::MutableAppContext) { let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx); let settings = EditorSettings::test(&cx); let (_, view) = cx.add_window(Default::default(), |cx| { build_editor(buffer.clone(), settings, cx) }); view.update(cx, |view, cx| { // two selections on the same line view.select_display_ranges( &[ DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5), DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9), ], cx, ); // indent from mid-tabstop to full tabstop view.tab(&Tab, cx); assert_eq!(view.text(cx), " one two\nthree\n four"); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7), DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11), ] ); // outdent from 1 tabstop to 0 tabstops view.outdent(&Outdent, cx); assert_eq!(view.text(cx), "one two\nthree\n four"); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3), DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7), ] ); // select across line ending view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx); // indent and outdent affect only the preceding line view.tab(&Tab, cx); assert_eq!(view.text(cx), "one two\n three\n four"); assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)] ); view.outdent(&Outdent, cx); assert_eq!(view.text(cx), "one two\nthree\n four"); assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)] ); // Ensure that indenting/outdenting works when the cursor is at column 0. view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx); view.tab(&Tab, cx); assert_eq!(view.text(cx), "one two\n three\n four"); assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)] ); view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx); view.outdent(&Outdent, cx); assert_eq!(view.text(cx), "one two\nthree\n four"); assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)] ); }); } #[gpui::test] fn test_backspace(cx: &mut gpui::MutableAppContext) { let buffer = MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx); let settings = EditorSettings::test(&cx); let (_, view) = cx.add_window(Default::default(), |cx| { build_editor(buffer.clone(), settings, cx) }); view.update(cx, |view, cx| { view.select_display_ranges( &[ // an empty selection - the preceding character is deleted DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2), // one character selected - it is deleted DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3), // a line suffix selected - it is deleted DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0), ], cx, ); view.backspace(&Backspace, cx); }); assert_eq!( buffer.read(cx).read(cx).text(), "oe two three\nfou five six\nseven ten\n" ); } #[gpui::test] fn test_delete(cx: &mut gpui::MutableAppContext) { let buffer = MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx); let settings = EditorSettings::test(&cx); let (_, view) = cx.add_window(Default::default(), |cx| { build_editor(buffer.clone(), settings, cx) }); view.update(cx, |view, cx| { view.select_display_ranges( &[ // an empty selection - the following character is deleted DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2), // one character selected - it is deleted DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3), // a line suffix selected - it is deleted DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0), ], cx, ); view.delete(&Delete, cx); }); assert_eq!( buffer.read(cx).read(cx).text(), "on two three\nfou five six\nseven ten\n" ); } #[gpui::test] fn test_delete_line(cx: &mut gpui::MutableAppContext) { let settings = EditorSettings::test(&cx); let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx); let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx)); view.update(cx, |view, cx| { view.select_display_ranges( &[ DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1), DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1), DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0), ], cx, ); view.delete_line(&DeleteLine, cx); assert_eq!(view.display_text(cx), "ghi"); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0), DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1) ] ); }); let settings = EditorSettings::test(&cx); let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx); let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx)); view.update(cx, |view, cx| { view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx); view.delete_line(&DeleteLine, cx); assert_eq!(view.display_text(cx), "ghi\n"); assert_eq!( view.selected_display_ranges(cx), vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)] ); }); } #[gpui::test] fn test_duplicate_line(cx: &mut gpui::MutableAppContext) { let settings = EditorSettings::test(&cx); let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx); let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx)); view.update(cx, |view, cx| { view.select_display_ranges( &[ DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1), DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2), DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0), DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0), ], cx, ); view.duplicate_line(&DuplicateLine, cx); assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n"); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1), DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2), DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0), DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0), ] ); }); let settings = EditorSettings::test(&cx); let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx); let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx)); view.update(cx, |view, cx| { view.select_display_ranges( &[ DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1), DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1), ], cx, ); view.duplicate_line(&DuplicateLine, cx); assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n"); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1), DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1), ] ); }); } #[gpui::test] fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) { let settings = EditorSettings::test(&cx); let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx); let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx)); view.update(cx, |view, cx| { view.fold_ranges( vec![ Point::new(0, 2)..Point::new(1, 2), Point::new(2, 3)..Point::new(4, 1), Point::new(7, 0)..Point::new(8, 4), ], cx, ); view.select_display_ranges( &[ DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1), DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1), DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3), DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2), ], cx, ); assert_eq!( view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj" ); view.move_line_up(&MoveLineUp, cx); assert_eq!( view.display_text(cx), "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff" ); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1), DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1), DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3), DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2) ] ); }); view.update(cx, |view, cx| { view.move_line_down(&MoveLineDown, cx); assert_eq!( view.display_text(cx), "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj" ); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1), DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1), DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3), DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2) ] ); }); view.update(cx, |view, cx| { view.move_line_down(&MoveLineDown, cx); assert_eq!( view.display_text(cx), "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj" ); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1), DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1), DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3), DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2) ] ); }); view.update(cx, |view, cx| { view.move_line_up(&MoveLineUp, cx); assert_eq!( view.display_text(cx), "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff" ); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1), DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1), DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3), DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2) ] ); }); } #[gpui::test] fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) { let settings = EditorSettings::test(&cx); let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx); let snapshot = buffer.read(cx).snapshot(cx); let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx)); editor.update(cx, |editor, cx| { editor.insert_blocks( [BlockProperties { position: snapshot.anchor_after(Point::new(2, 0)), disposition: BlockDisposition::Below, height: 1, render: Arc::new(|_| Empty::new().boxed()), }], cx, ); editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx); editor.move_line_down(&MoveLineDown, cx); }); } #[gpui::test] fn test_clipboard(cx: &mut gpui::MutableAppContext) { let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx); let settings = EditorSettings::test(&cx); let view = cx .add_window(Default::default(), |cx| { build_editor(buffer.clone(), settings, cx) }) .1; // Cut with three selections. Clipboard text is divided into three slices. view.update(cx, |view, cx| { view.select_ranges(vec![0..7, 11..17, 22..27], None, cx); view.cut(&Cut, cx); assert_eq!(view.display_text(cx), "two four six "); }); // Paste with three cursors. Each cursor pastes one slice of the clipboard text. view.update(cx, |view, cx| { view.select_ranges(vec![4..4, 9..9, 13..13], None, cx); view.paste(&Paste, cx); assert_eq!(view.display_text(cx), "two one✅ four three six five "); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11), DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22), DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31) ] ); }); // Paste again but with only two cursors. Since the number of cursors doesn't // match the number of slices in the clipboard, the entire clipboard text // is pasted at each cursor. view.update(cx, |view, cx| { view.select_ranges(vec![0..0, 31..31], None, cx); view.handle_input(&Input("( ".into()), cx); view.paste(&Paste, cx); view.handle_input(&Input(") ".into()), cx); assert_eq!( view.display_text(cx), "( one✅ three five ) two one✅ four three six five ( one✅ three five ) " ); }); view.update(cx, |view, cx| { view.select_ranges(vec![0..0], None, cx); view.handle_input(&Input("123\n4567\n89\n".into()), cx); assert_eq!( view.display_text(cx), "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) " ); }); // Cut with three selections, one of which is full-line. view.update(cx, |view, cx| { view.select_display_ranges( &[ DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2), DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1), DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1), ], cx, ); view.cut(&Cut, cx); assert_eq!( view.display_text(cx), "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) " ); }); // Paste with three selections, noticing how the copied selection that was full-line // gets inserted before the second cursor. view.update(cx, |view, cx| { view.select_display_ranges( &[ DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1), DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1), DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3), ], cx, ); view.paste(&Paste, cx); assert_eq!( view.display_text(cx), "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) " ); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2), DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1), DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3), ] ); }); // Copy with a single cursor only, which writes the whole line into the clipboard. view.update(cx, |view, cx| { view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx); view.copy(&Copy, cx); }); // Paste with three selections, noticing how the copied full-line selection is inserted // before the empty selections but replaces the selection that is non-empty. view.update(cx, |view, cx| { view.select_display_ranges( &[ DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1), DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2), DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1), ], cx, ); view.paste(&Paste, cx); assert_eq!( view.display_text(cx), "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) " ); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1), DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0), DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1), ] ); }); } #[gpui::test] fn test_select_all(cx: &mut gpui::MutableAppContext) { let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx); let settings = EditorSettings::test(&cx); let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx)); view.update(cx, |view, cx| { view.select_all(&SelectAll, cx); assert_eq!( view.selected_display_ranges(cx), &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)] ); }); } #[gpui::test] fn test_select_line(cx: &mut gpui::MutableAppContext) { let settings = EditorSettings::test(&cx); let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx); let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx)); view.update(cx, |view, cx| { view.select_display_ranges( &[ DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1), DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2), DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0), DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2), ], cx, ); view.select_line(&SelectLine, cx); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0), DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0), ] ); }); view.update(cx, |view, cx| { view.select_line(&SelectLine, cx); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0), DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5), ] ); }); view.update(cx, |view, cx| { view.select_line(&SelectLine, cx); assert_eq!( view.selected_display_ranges(cx), vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)] ); }); } #[gpui::test] fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) { let settings = EditorSettings::test(&cx); let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx); let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx)); view.update(cx, |view, cx| { view.fold_ranges( vec![ Point::new(0, 2)..Point::new(1, 2), Point::new(2, 3)..Point::new(4, 1), Point::new(7, 0)..Point::new(8, 4), ], cx, ); view.select_display_ranges( &[ DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1), DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2), DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0), DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4), ], cx, ); assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i"); }); view.update(cx, |view, cx| { view.split_selection_into_lines(&SplitSelectionIntoLines, cx); assert_eq!( view.display_text(cx), "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i" ); assert_eq!( view.selected_display_ranges(cx), [ DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1), DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2), DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0), DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4) ] ); }); view.update(cx, |view, cx| { view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx); view.split_selection_into_lines(&SplitSelectionIntoLines, cx); assert_eq!( view.display_text(cx), "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii" ); assert_eq!( view.selected_display_ranges(cx), [ DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5), DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5), DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5), DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5), DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5), DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5), DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5), DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0) ] ); }); } #[gpui::test] fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) { let settings = EditorSettings::test(&cx); let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx); let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx)); view.update(cx, |view, cx| { view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx); }); view.update(cx, |view, cx| { view.add_selection_above(&AddSelectionAbove, cx); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3), DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3) ] ); }); view.update(cx, |view, cx| { view.add_selection_above(&AddSelectionAbove, cx); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3), DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3) ] ); }); view.update(cx, |view, cx| { view.add_selection_below(&AddSelectionBelow, cx); assert_eq!( view.selected_display_ranges(cx), vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)] ); }); view.update(cx, |view, cx| { view.add_selection_below(&AddSelectionBelow, cx); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3), DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3) ] ); }); view.update(cx, |view, cx| { view.add_selection_below(&AddSelectionBelow, cx); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3), DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3) ] ); }); view.update(cx, |view, cx| { view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx); }); view.update(cx, |view, cx| { view.add_selection_below(&AddSelectionBelow, cx); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3), DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3) ] ); }); view.update(cx, |view, cx| { view.add_selection_below(&AddSelectionBelow, cx); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3), DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3) ] ); }); view.update(cx, |view, cx| { view.add_selection_above(&AddSelectionAbove, cx); assert_eq!( view.selected_display_ranges(cx), vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)] ); }); view.update(cx, |view, cx| { view.add_selection_above(&AddSelectionAbove, cx); assert_eq!( view.selected_display_ranges(cx), vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)] ); }); view.update(cx, |view, cx| { view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx); view.add_selection_below(&AddSelectionBelow, cx); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3), DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4), DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2), ] ); }); view.update(cx, |view, cx| { view.add_selection_below(&AddSelectionBelow, cx); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3), DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4), DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2), DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4), ] ); }); view.update(cx, |view, cx| { view.add_selection_above(&AddSelectionAbove, cx); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3), DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4), DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2), ] ); }); view.update(cx, |view, cx| { view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx); }); view.update(cx, |view, cx| { view.add_selection_above(&AddSelectionAbove, cx); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1), DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1), DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1), DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1), ] ); }); view.update(cx, |view, cx| { view.add_selection_below(&AddSelectionBelow, cx); assert_eq!( view.selected_display_ranges(cx), vec![ DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1), DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1), DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1), ] ); }); } #[gpui::test] async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) { let settings = cx.read(EditorSettings::test); let language = Arc::new(Language::new( LanguageConfig::default(), Some(tree_sitter_rust::language()), )); let text = r#" use mod1::mod2::{mod3, mod4}; fn fn_1(param1: bool, param2: &str) { let var1 = "text"; } "# .unindent(); let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx)); let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx)); let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx)); view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx)) .await; view.update(&mut cx, |view, cx| { view.select_display_ranges( &[ DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25), DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12), DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18), ], cx, ); view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx); }); assert_eq!( view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)), &[ DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27), DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7), DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21), ] ); view.update(&mut cx, |view, cx| { view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx); }); assert_eq!( view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)), &[ DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28), DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0), ] ); view.update(&mut cx, |view, cx| { view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx); }); assert_eq!( view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)), &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)] ); // Trying to expand the selected syntax node one more time has no effect. view.update(&mut cx, |view, cx| { view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx); }); assert_eq!( view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)), &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)] ); view.update(&mut cx, |view, cx| { view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx); }); assert_eq!( view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)), &[ DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28), DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0), ] ); view.update(&mut cx, |view, cx| { view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx); }); assert_eq!( view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)), &[ DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27), DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7), DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21), ] ); view.update(&mut cx, |view, cx| { view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx); }); assert_eq!( view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)), &[ DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25), DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12), DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18), ] ); // Trying to shrink the selected syntax node one more time has no effect. view.update(&mut cx, |view, cx| { view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx); }); assert_eq!( view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)), &[ DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25), DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12), DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18), ] ); // Ensure that we keep expanding the selection if the larger selection starts or ends within // a fold. view.update(&mut cx, |view, cx| { view.fold_ranges( vec![ Point::new(0, 21)..Point::new(0, 24), Point::new(3, 20)..Point::new(3, 22), ], cx, ); view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx); }); assert_eq!( view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)), &[ DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28), DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7), DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23), ] ); } #[gpui::test] async fn test_autoindent_selections(mut cx: gpui::TestAppContext) { let settings = cx.read(EditorSettings::test); let language = Arc::new( Language::new( LanguageConfig { brackets: vec![ BracketPair { start: "{".to_string(), end: "}".to_string(), close: false, newline: true, }, BracketPair { start: "(".to_string(), end: ")".to_string(), close: false, newline: true, }, ], ..Default::default() }, Some(tree_sitter_rust::language()), ) .with_indents_query( r#" (_ "(" ")" @end) @indent (_ "{" "}" @end) @indent "#, ) .unwrap(), ); let text = "fn a() {}"; let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx)); let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx)); let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx)); editor .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx)) .await; editor.update(&mut cx, |editor, cx| { editor.select_ranges([5..5, 8..8, 9..9], None, cx); editor.newline(&Newline, cx); assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n"); assert_eq!( editor.selected_ranges(cx), &[ Point::new(1, 4)..Point::new(1, 4), Point::new(3, 4)..Point::new(3, 4), Point::new(5, 0)..Point::new(5, 0) ] ); }); } #[gpui::test] async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) { let settings = cx.read(EditorSettings::test); let language = Arc::new(Language::new( LanguageConfig { brackets: vec![ BracketPair { start: "{".to_string(), end: "}".to_string(), close: true, newline: true, }, BracketPair { start: "/*".to_string(), end: " */".to_string(), close: true, newline: true, }, ], ..Default::default() }, Some(tree_sitter_rust::language()), )); let text = r#" a / "# .unindent(); let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx)); let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx)); let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx)); view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx)) .await; view.update(&mut cx, |view, cx| { view.select_display_ranges( &[ DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1), DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0), ], cx, ); view.handle_input(&Input("{".to_string()), cx); view.handle_input(&Input("{".to_string()), cx); view.handle_input(&Input("{".to_string()), cx); assert_eq!( view.text(cx), " {{{}}} {{{}}} / " .unindent() ); view.move_right(&MoveRight, cx); view.handle_input(&Input("}".to_string()), cx); view.handle_input(&Input("}".to_string()), cx); view.handle_input(&Input("}".to_string()), cx); assert_eq!( view.text(cx), " {{{}}}} {{{}}}} / " .unindent() ); view.undo(&Undo, cx); view.handle_input(&Input("/".to_string()), cx); view.handle_input(&Input("*".to_string()), cx); assert_eq!( view.text(cx), " /* */ /* */ / " .unindent() ); view.undo(&Undo, cx); view.select_display_ranges( &[ DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1), DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0), ], cx, ); view.handle_input(&Input("*".to_string()), cx); assert_eq!( view.text(cx), " a /* * " .unindent() ); }); } #[gpui::test] async fn test_toggle_comment(mut cx: gpui::TestAppContext) { let settings = cx.read(EditorSettings::test); let language = Arc::new(Language::new( LanguageConfig { line_comment: Some("// ".to_string()), ..Default::default() }, Some(tree_sitter_rust::language()), )); let text = " fn a() { //b(); // c(); // d(); } " .unindent(); let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx)); let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx)); let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx)); view.update(&mut cx, |editor, cx| { // If multiple selections intersect a line, the line is only // toggled once. editor.select_display_ranges( &[ DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3), DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6), ], cx, ); editor.toggle_comments(&ToggleComments, cx); assert_eq!( editor.text(cx), " fn a() { b(); c(); d(); } " .unindent() ); // The comment prefix is inserted at the same column for every line // in a selection. editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx); editor.toggle_comments(&ToggleComments, cx); assert_eq!( editor.text(cx), " fn a() { // b(); // c(); // d(); } " .unindent() ); // If a selection ends at the beginning of a line, that line is not toggled. editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx); editor.toggle_comments(&ToggleComments, cx); assert_eq!( editor.text(cx), " fn a() { // b(); c(); // d(); } " .unindent() ); }); } #[gpui::test] fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) { let settings = EditorSettings::test(cx); let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx)); let multibuffer = cx.add_model(|cx| { let mut multibuffer = MultiBuffer::new(0); multibuffer.push_excerpt( ExcerptProperties { buffer: &buffer, range: Point::new(0, 0)..Point::new(0, 4), }, cx, ); multibuffer.push_excerpt( ExcerptProperties { buffer: &buffer, range: Point::new(1, 0)..Point::new(1, 4), }, cx, ); multibuffer }); assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb"); let (_, view) = cx.add_window(Default::default(), |cx| { build_editor(multibuffer, settings, cx) }); view.update(cx, |view, cx| { view.select_display_ranges( &[ DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0), DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0), ], cx, ); view.handle_input(&Input("X".to_string()), cx); assert_eq!(view.text(cx), "Xaaaa\nXbbbb"); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1), DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1), ] ) }); } #[gpui::test] fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) { let settings = EditorSettings::test(cx); let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx)); let multibuffer = cx.add_model(|cx| { let mut multibuffer = MultiBuffer::new(0); multibuffer.push_excerpt( ExcerptProperties { buffer: &buffer, range: Point::new(0, 0)..Point::new(1, 4), }, cx, ); multibuffer.push_excerpt( ExcerptProperties { buffer: &buffer, range: Point::new(1, 0)..Point::new(2, 4), }, cx, ); multibuffer }); assert_eq!( multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb\nbbbb\ncccc" ); let (_, view) = cx.add_window(Default::default(), |cx| { build_editor(multibuffer, settings, cx) }); view.update(cx, |view, cx| { view.select_display_ranges( &[ DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1), DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3), ], cx, ); view.handle_input(&Input("X".to_string()), cx); assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc"); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2), DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5), ] ); view.newline(&Newline, cx); assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc"); assert_eq!( view.selected_display_ranges(cx), &[ DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0), DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0), ] ); }); } #[gpui::test] fn test_refresh_selections(cx: &mut gpui::MutableAppContext) { let settings = EditorSettings::test(cx); let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx)); let mut excerpt1_id = None; let multibuffer = cx.add_model(|cx| { let mut multibuffer = MultiBuffer::new(0); excerpt1_id = Some(multibuffer.push_excerpt( ExcerptProperties { buffer: &buffer, range: Point::new(0, 0)..Point::new(1, 4), }, cx, )); multibuffer.push_excerpt( ExcerptProperties { buffer: &buffer, range: Point::new(1, 0)..Point::new(2, 4), }, cx, ); multibuffer }); assert_eq!( multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb\nbbbb\ncccc" ); let (_, editor) = cx.add_window(Default::default(), |cx| { let mut editor = build_editor(multibuffer.clone(), settings, cx); editor.select_display_ranges( &[ DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3), DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1), ], cx, ); editor }); // Refreshing selections is a no-op when excerpts haven't changed. editor.update(cx, |editor, cx| { editor.refresh_selections(cx); assert_eq!( editor.selected_display_ranges(cx), [ DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3), DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1), ] ); }); multibuffer.update(cx, |multibuffer, cx| { multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx); }); editor.update(cx, |editor, cx| { // Removing an excerpt causes the first selection to become degenerate. assert_eq!( editor.selected_display_ranges(cx), [ DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0), DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1) ] ); // Refreshing selections will relocate the first selection to the original buffer // location. editor.refresh_selections(cx); assert_eq!( editor.selected_display_ranges(cx), [ DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1), DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3) ] ); }); } #[gpui::test] async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) { let settings = cx.read(EditorSettings::test); let language = Arc::new(Language::new( LanguageConfig { brackets: vec![ BracketPair { start: "{".to_string(), end: "}".to_string(), close: true, newline: true, }, BracketPair { start: "/* ".to_string(), end: " */".to_string(), close: true, newline: true, }, ], ..Default::default() }, Some(tree_sitter_rust::language()), )); let text = concat!( "{ }\n", // Suppress rustfmt " x\n", // " /* */\n", // "x\n", // "{{} }\n", // ); let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx)); let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx)); let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx)); view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx)) .await; view.update(&mut cx, |view, cx| { view.select_display_ranges( &[ DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3), DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5), DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4), ], cx, ); view.newline(&Newline, cx); assert_eq!( view.buffer().read(cx).read(cx).text(), concat!( "{ \n", // Suppress rustfmt "\n", // "}\n", // " x\n", // " /* \n", // " \n", // " */\n", // "x\n", // "{{} \n", // "}\n", // ) ); }); } fn empty_range(row: usize, column: usize) -> Range { let point = DisplayPoint::new(row as u32, column as u32); point..point } fn build_editor( buffer: ModelHandle, settings: EditorSettings, cx: &mut ViewContext, ) -> Editor { Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx) } } trait RangeExt { fn sorted(&self) -> Range; fn to_inclusive(&self) -> RangeInclusive; } impl RangeExt for Range { fn sorted(&self) -> Self { cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone() } fn to_inclusive(&self) -> RangeInclusive { self.start.clone()..=self.end.clone() } }