1491 lines
52 KiB
Rust
1491 lines
52 KiB
Rust
use super::{ItemHandle, SplitDirection};
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use crate::{toolbar::Toolbar, Item, NewFile, NewSearch, NewTerminal, WeakItemHandle, Workspace};
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use anyhow::Result;
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use collections::{HashMap, HashSet, VecDeque};
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use context_menu::{ContextMenu, ContextMenuItem};
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use drag_and_drop::{DragAndDrop, Draggable};
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use futures::StreamExt;
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use gpui::{
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actions,
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elements::*,
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geometry::{
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rect::RectF,
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vector::{vec2f, Vector2F},
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},
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impl_actions, impl_internal_actions,
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platform::{CursorStyle, NavigationDirection},
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AnyViewHandle, AnyWeakViewHandle, AppContext, AsyncAppContext, Entity, EventContext,
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ModelHandle, MouseButton, MutableAppContext, PromptLevel, Quad, RenderContext, Task, View,
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ViewContext, ViewHandle, WeakViewHandle,
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};
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use project::{Project, ProjectEntryId, ProjectPath};
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use serde::Deserialize;
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use settings::{Autosave, Settings};
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use std::{any::Any, cell::RefCell, cmp, mem, path::Path, rc::Rc};
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use util::ResultExt;
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#[derive(Clone, Deserialize, PartialEq)]
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pub struct ActivateItem(pub usize);
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actions!(
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pane,
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[
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ActivatePrevItem,
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ActivateNextItem,
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ActivateLastItem,
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CloseActiveItem,
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CloseInactiveItems,
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ReopenClosedItem,
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SplitLeft,
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SplitUp,
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SplitRight,
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SplitDown,
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]
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);
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#[derive(Clone, PartialEq)]
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pub struct CloseItem {
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pub item_id: usize,
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pub pane: WeakViewHandle<Pane>,
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}
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#[derive(Clone, PartialEq)]
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pub struct MoveItem {
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pub item_id: usize,
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pub from: WeakViewHandle<Pane>,
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pub to: WeakViewHandle<Pane>,
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pub destination_index: usize,
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}
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#[derive(Clone, Deserialize, PartialEq)]
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pub struct GoBack {
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#[serde(skip_deserializing)]
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pub pane: Option<WeakViewHandle<Pane>>,
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}
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#[derive(Clone, Deserialize, PartialEq)]
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pub struct GoForward {
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#[serde(skip_deserializing)]
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pub pane: Option<WeakViewHandle<Pane>>,
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}
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#[derive(Clone, PartialEq)]
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pub struct DeploySplitMenu {
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position: Vector2F,
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}
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#[derive(Clone, PartialEq)]
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pub struct DeployNewMenu {
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position: Vector2F,
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}
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impl_actions!(pane, [GoBack, GoForward, ActivateItem]);
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impl_internal_actions!(pane, [CloseItem, DeploySplitMenu, DeployNewMenu, MoveItem]);
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const MAX_NAVIGATION_HISTORY_LEN: usize = 1024;
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pub fn init(cx: &mut MutableAppContext) {
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cx.add_action(|pane: &mut Pane, action: &ActivateItem, cx| {
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pane.activate_item(action.0, true, true, cx);
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});
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cx.add_action(|pane: &mut Pane, _: &ActivateLastItem, cx| {
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pane.activate_item(pane.items.len() - 1, true, true, cx);
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});
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cx.add_action(|pane: &mut Pane, _: &ActivatePrevItem, cx| {
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pane.activate_prev_item(cx);
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});
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cx.add_action(|pane: &mut Pane, _: &ActivateNextItem, cx| {
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pane.activate_next_item(cx);
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});
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cx.add_async_action(Pane::close_active_item);
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cx.add_async_action(Pane::close_inactive_items);
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cx.add_async_action(|workspace: &mut Workspace, action: &CloseItem, cx| {
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let pane = action.pane.upgrade(cx)?;
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let task = Pane::close_item(workspace, pane, action.item_id, cx);
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Some(cx.foreground().spawn(async move {
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task.await?;
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Ok(())
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}))
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});
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cx.add_action(
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|workspace,
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MoveItem {
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from,
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to,
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item_id,
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destination_index,
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},
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cx| {
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// Get item handle to move
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let from = if let Some(from) = from.upgrade(cx) {
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from
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} else {
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return;
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};
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// Add item to new pane at given index
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let to = if let Some(to) = to.upgrade(cx) {
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to
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} else {
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return;
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};
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Pane::move_item(workspace, from, to, *item_id, *destination_index, cx)
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},
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);
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cx.add_action(|pane: &mut Pane, _: &SplitLeft, cx| pane.split(SplitDirection::Left, cx));
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cx.add_action(|pane: &mut Pane, _: &SplitUp, cx| pane.split(SplitDirection::Up, cx));
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cx.add_action(|pane: &mut Pane, _: &SplitRight, cx| pane.split(SplitDirection::Right, cx));
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cx.add_action(|pane: &mut Pane, _: &SplitDown, cx| pane.split(SplitDirection::Down, cx));
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cx.add_action(Pane::deploy_split_menu);
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cx.add_action(Pane::deploy_new_menu);
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cx.add_action(|workspace: &mut Workspace, _: &ReopenClosedItem, cx| {
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Pane::reopen_closed_item(workspace, cx).detach();
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});
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cx.add_action(|workspace: &mut Workspace, action: &GoBack, cx| {
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Pane::go_back(
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workspace,
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action
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.pane
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.as_ref()
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.and_then(|weak_handle| weak_handle.upgrade(cx)),
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cx,
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)
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.detach();
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});
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cx.add_action(|workspace: &mut Workspace, action: &GoForward, cx| {
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Pane::go_forward(
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workspace,
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action
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.pane
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.as_ref()
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.and_then(|weak_handle| weak_handle.upgrade(cx)),
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cx,
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)
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.detach();
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});
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}
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pub enum Event {
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Focused,
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ActivateItem { local: bool },
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Remove,
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RemoveItem,
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Split(SplitDirection),
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ChangeItemTitle,
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}
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pub struct Pane {
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items: Vec<Box<dyn ItemHandle>>,
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is_active: bool,
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active_item_index: usize,
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last_focused_view: Option<AnyWeakViewHandle>,
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autoscroll: bool,
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nav_history: Rc<RefCell<NavHistory>>,
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toolbar: ViewHandle<Toolbar>,
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context_menu: ViewHandle<ContextMenu>,
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}
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pub struct ItemNavHistory {
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history: Rc<RefCell<NavHistory>>,
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item: Rc<dyn WeakItemHandle>,
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}
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struct NavHistory {
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mode: NavigationMode,
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backward_stack: VecDeque<NavigationEntry>,
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forward_stack: VecDeque<NavigationEntry>,
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closed_stack: VecDeque<NavigationEntry>,
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paths_by_item: HashMap<usize, ProjectPath>,
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pane: WeakViewHandle<Pane>,
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}
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#[derive(Copy, Clone)]
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enum NavigationMode {
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Normal,
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GoingBack,
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GoingForward,
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ClosingItem,
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ReopeningClosedItem,
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Disabled,
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}
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impl Default for NavigationMode {
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fn default() -> Self {
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Self::Normal
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}
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}
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pub struct NavigationEntry {
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pub item: Rc<dyn WeakItemHandle>,
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pub data: Option<Box<dyn Any>>,
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}
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struct DraggedItem {
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item: Box<dyn ItemHandle>,
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pane: WeakViewHandle<Pane>,
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}
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pub enum ReorderBehavior {
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None,
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MoveAfterActive,
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MoveToIndex(usize),
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}
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impl Pane {
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pub fn new(cx: &mut ViewContext<Self>) -> Self {
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let handle = cx.weak_handle();
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let context_menu = cx.add_view(ContextMenu::new);
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Self {
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items: Vec::new(),
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is_active: true,
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active_item_index: 0,
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last_focused_view: None,
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autoscroll: false,
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nav_history: Rc::new(RefCell::new(NavHistory {
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mode: NavigationMode::Normal,
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backward_stack: Default::default(),
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forward_stack: Default::default(),
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closed_stack: Default::default(),
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paths_by_item: Default::default(),
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pane: handle.clone(),
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})),
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toolbar: cx.add_view(|_| Toolbar::new(handle)),
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context_menu,
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}
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}
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pub fn set_active(&mut self, is_active: bool, cx: &mut ViewContext<Self>) {
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self.is_active = is_active;
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cx.notify();
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}
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pub fn nav_history_for_item<T: Item>(&self, item: &ViewHandle<T>) -> ItemNavHistory {
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ItemNavHistory {
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history: self.nav_history.clone(),
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item: Rc::new(item.downgrade()),
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}
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}
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pub fn go_back(
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workspace: &mut Workspace,
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pane: Option<ViewHandle<Pane>>,
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cx: &mut ViewContext<Workspace>,
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) -> Task<()> {
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Self::navigate_history(
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workspace,
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pane.unwrap_or_else(|| workspace.active_pane().clone()),
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NavigationMode::GoingBack,
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cx,
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)
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}
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pub fn go_forward(
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workspace: &mut Workspace,
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pane: Option<ViewHandle<Pane>>,
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cx: &mut ViewContext<Workspace>,
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) -> Task<()> {
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Self::navigate_history(
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workspace,
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pane.unwrap_or_else(|| workspace.active_pane().clone()),
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NavigationMode::GoingForward,
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cx,
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)
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}
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pub fn reopen_closed_item(
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workspace: &mut Workspace,
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cx: &mut ViewContext<Workspace>,
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) -> Task<()> {
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Self::navigate_history(
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workspace,
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workspace.active_pane().clone(),
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NavigationMode::ReopeningClosedItem,
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cx,
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)
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}
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pub fn disable_history(&mut self) {
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self.nav_history.borrow_mut().disable();
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}
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pub fn enable_history(&mut self) {
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self.nav_history.borrow_mut().enable();
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}
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pub fn can_navigate_backward(&self) -> bool {
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!self.nav_history.borrow().backward_stack.is_empty()
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}
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pub fn can_navigate_forward(&self) -> bool {
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!self.nav_history.borrow().forward_stack.is_empty()
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}
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fn history_updated(&mut self, cx: &mut ViewContext<Self>) {
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self.toolbar.update(cx, |_, cx| cx.notify());
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}
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fn navigate_history(
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workspace: &mut Workspace,
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pane: ViewHandle<Pane>,
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mode: NavigationMode,
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cx: &mut ViewContext<Workspace>,
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) -> Task<()> {
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cx.focus(pane.clone());
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let to_load = pane.update(cx, |pane, cx| {
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loop {
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// Retrieve the weak item handle from the history.
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let entry = pane.nav_history.borrow_mut().pop(mode, cx)?;
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// If the item is still present in this pane, then activate it.
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if let Some(index) = entry
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.item
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.upgrade(cx)
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.and_then(|v| pane.index_for_item(v.as_ref()))
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{
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let prev_active_item_index = pane.active_item_index;
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pane.nav_history.borrow_mut().set_mode(mode);
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pane.activate_item(index, true, true, cx);
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pane.nav_history
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.borrow_mut()
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.set_mode(NavigationMode::Normal);
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let mut navigated = prev_active_item_index != pane.active_item_index;
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if let Some(data) = entry.data {
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navigated |= pane.active_item()?.navigate(data, cx);
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}
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if navigated {
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break None;
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}
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}
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// If the item is no longer present in this pane, then retrieve its
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// project path in order to reopen it.
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else {
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break pane
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.nav_history
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.borrow()
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.paths_by_item
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.get(&entry.item.id())
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.cloned()
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.map(|project_path| (project_path, entry));
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}
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}
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});
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if let Some((project_path, entry)) = to_load {
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// If the item was no longer present, then load it again from its previous path.
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let pane = pane.downgrade();
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let task = workspace.load_path(project_path, cx);
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cx.spawn(|workspace, mut cx| async move {
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let task = task.await;
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if let Some(pane) = pane.upgrade(&cx) {
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let mut navigated = false;
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if let Some((project_entry_id, build_item)) = task.log_err() {
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let prev_active_item_id = pane.update(&mut cx, |pane, _| {
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pane.nav_history.borrow_mut().set_mode(mode);
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pane.active_item().map(|p| p.id())
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});
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let item = workspace.update(&mut cx, |workspace, cx| {
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Self::open_item(
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workspace,
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pane.clone(),
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project_entry_id,
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true,
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cx,
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build_item,
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)
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});
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pane.update(&mut cx, |pane, cx| {
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navigated |= Some(item.id()) != prev_active_item_id;
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pane.nav_history
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.borrow_mut()
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.set_mode(NavigationMode::Normal);
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if let Some(data) = entry.data {
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navigated |= item.navigate(data, cx);
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}
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});
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}
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|
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if !navigated {
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workspace
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.update(&mut cx, |workspace, cx| {
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Self::navigate_history(workspace, pane, mode, cx)
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})
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.await;
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}
|
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}
|
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})
|
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} else {
|
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Task::ready(())
|
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}
|
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}
|
|
|
|
pub(crate) fn open_item(
|
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workspace: &mut Workspace,
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pane: ViewHandle<Pane>,
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project_entry_id: ProjectEntryId,
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focus_item: bool,
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cx: &mut ViewContext<Workspace>,
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build_item: impl FnOnce(&mut ViewContext<Pane>) -> Box<dyn ItemHandle>,
|
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) -> Box<dyn ItemHandle> {
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let existing_item = pane.update(cx, |pane, cx| {
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for item in pane.items.iter() {
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if item.project_path(cx).is_some()
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&& item.project_entry_ids(cx).as_slice() == [project_entry_id]
|
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{
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let item = item.boxed_clone();
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|
return Some(item);
|
|
}
|
|
}
|
|
None
|
|
});
|
|
|
|
// Even if the item exists, we re-add it to reorder it after the active item.
|
|
// We may revisit this behavior after adding an "activation history" for pane items.
|
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let item = existing_item.unwrap_or_else(|| pane.update(cx, |_, cx| build_item(cx)));
|
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Pane::add_item(workspace, pane, item.clone(), true, focus_item, cx);
|
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item
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|
}
|
|
|
|
pub fn add_item_at(
|
|
workspace: &mut Workspace,
|
|
pane: ViewHandle<Pane>,
|
|
item: Box<dyn ItemHandle>,
|
|
activate_pane: bool,
|
|
focus_item: bool,
|
|
destination_index: Option<usize>,
|
|
cx: &mut ViewContext<Workspace>,
|
|
) {
|
|
// If no destination index is specified, add or move the item after the active item.
|
|
let mut destination_index = if let Some(destination_index) = destination_index {
|
|
destination_index
|
|
} else {
|
|
let pane = pane.read(cx);
|
|
cmp::min(pane.active_item_index + 1, pane.items.len())
|
|
};
|
|
|
|
// Does the item already exist?
|
|
if let Some(existing_item_index) = pane.read(cx).items.iter().position(|i| {
|
|
i.id() == item.id() || i.project_entry_ids(cx) == item.project_entry_ids(cx)
|
|
}) {
|
|
// If the item already exists, move it to the desired destination and activate it
|
|
pane.update(cx, |pane, cx| {
|
|
if existing_item_index != destination_index {
|
|
let existing_item_is_active = existing_item_index == pane.active_item_index;
|
|
|
|
pane.items.remove(existing_item_index);
|
|
if existing_item_index < destination_index {
|
|
destination_index -= 1;
|
|
}
|
|
if existing_item_index < pane.active_item_index {
|
|
pane.active_item_index -= 1;
|
|
}
|
|
|
|
pane.items.insert(destination_index, item.clone());
|
|
|
|
if existing_item_is_active {
|
|
pane.active_item_index = destination_index;
|
|
} else if destination_index <= pane.active_item_index {
|
|
pane.active_item_index += 1;
|
|
}
|
|
|
|
cx.notify();
|
|
}
|
|
|
|
pane.activate_item(destination_index, activate_pane, focus_item, cx);
|
|
});
|
|
} else {
|
|
// If the item doesn't already exist, add it and activate it
|
|
item.added_to_pane(workspace, pane.clone(), cx);
|
|
pane.update(cx, |pane, cx| {
|
|
cx.reparent(&item);
|
|
pane.items.insert(destination_index, item);
|
|
if destination_index <= pane.active_item_index {
|
|
pane.active_item_index += 1;
|
|
}
|
|
|
|
pane.activate_item(destination_index, activate_pane, focus_item, cx);
|
|
cx.notify();
|
|
});
|
|
}
|
|
}
|
|
|
|
pub(crate) fn add_item(
|
|
workspace: &mut Workspace,
|
|
pane: ViewHandle<Pane>,
|
|
item: Box<dyn ItemHandle>,
|
|
activate_pane: bool,
|
|
focus_item: bool,
|
|
cx: &mut ViewContext<Workspace>,
|
|
) {
|
|
Self::add_item_at(workspace, pane, item, activate_pane, focus_item, None, cx)
|
|
}
|
|
|
|
pub fn items(&self) -> impl Iterator<Item = &Box<dyn ItemHandle>> {
|
|
self.items.iter()
|
|
}
|
|
|
|
pub fn items_of_type<T: View>(&self) -> impl '_ + Iterator<Item = ViewHandle<T>> {
|
|
self.items
|
|
.iter()
|
|
.filter_map(|item| item.to_any().downcast())
|
|
}
|
|
|
|
pub fn active_item(&self) -> Option<Box<dyn ItemHandle>> {
|
|
self.items.get(self.active_item_index).cloned()
|
|
}
|
|
|
|
pub fn item_for_entry(
|
|
&self,
|
|
entry_id: ProjectEntryId,
|
|
cx: &AppContext,
|
|
) -> Option<Box<dyn ItemHandle>> {
|
|
self.items.iter().find_map(|item| {
|
|
if item.is_singleton(cx) && item.project_entry_ids(cx).as_slice() == [entry_id] {
|
|
Some(item.boxed_clone())
|
|
} else {
|
|
None
|
|
}
|
|
})
|
|
}
|
|
|
|
pub fn index_for_item(&self, item: &dyn ItemHandle) -> Option<usize> {
|
|
self.items.iter().position(|i| i.id() == item.id())
|
|
}
|
|
|
|
pub fn activate_item(
|
|
&mut self,
|
|
index: usize,
|
|
activate_pane: bool,
|
|
focus_item: bool,
|
|
cx: &mut ViewContext<Self>,
|
|
) {
|
|
use NavigationMode::{GoingBack, GoingForward};
|
|
if index < self.items.len() {
|
|
let prev_active_item_ix = mem::replace(&mut self.active_item_index, index);
|
|
if prev_active_item_ix != self.active_item_index
|
|
|| matches!(self.nav_history.borrow().mode, GoingBack | GoingForward)
|
|
{
|
|
if let Some(prev_item) = self.items.get(prev_active_item_ix) {
|
|
prev_item.deactivated(cx);
|
|
}
|
|
cx.emit(Event::ActivateItem {
|
|
local: activate_pane,
|
|
});
|
|
}
|
|
self.update_toolbar(cx);
|
|
if focus_item {
|
|
self.focus_active_item(cx);
|
|
}
|
|
if activate_pane {
|
|
cx.emit(Event::Focused);
|
|
}
|
|
self.autoscroll = true;
|
|
cx.notify();
|
|
}
|
|
}
|
|
|
|
pub fn activate_prev_item(&mut self, cx: &mut ViewContext<Self>) {
|
|
let mut index = self.active_item_index;
|
|
if index > 0 {
|
|
index -= 1;
|
|
} else if !self.items.is_empty() {
|
|
index = self.items.len() - 1;
|
|
}
|
|
self.activate_item(index, true, true, cx);
|
|
}
|
|
|
|
pub fn activate_next_item(&mut self, cx: &mut ViewContext<Self>) {
|
|
let mut index = self.active_item_index;
|
|
if index + 1 < self.items.len() {
|
|
index += 1;
|
|
} else {
|
|
index = 0;
|
|
}
|
|
self.activate_item(index, true, true, cx);
|
|
}
|
|
|
|
pub fn close_active_item(
|
|
workspace: &mut Workspace,
|
|
_: &CloseActiveItem,
|
|
cx: &mut ViewContext<Workspace>,
|
|
) -> Option<Task<Result<()>>> {
|
|
let pane_handle = workspace.active_pane().clone();
|
|
let pane = pane_handle.read(cx);
|
|
if pane.items.is_empty() {
|
|
None
|
|
} else {
|
|
let item_id_to_close = pane.items[pane.active_item_index].id();
|
|
let task = Self::close_items(workspace, pane_handle, cx, move |item_id| {
|
|
item_id == item_id_to_close
|
|
});
|
|
Some(cx.foreground().spawn(async move {
|
|
task.await?;
|
|
Ok(())
|
|
}))
|
|
}
|
|
}
|
|
|
|
pub fn close_inactive_items(
|
|
workspace: &mut Workspace,
|
|
_: &CloseInactiveItems,
|
|
cx: &mut ViewContext<Workspace>,
|
|
) -> Option<Task<Result<()>>> {
|
|
let pane_handle = workspace.active_pane().clone();
|
|
let pane = pane_handle.read(cx);
|
|
if pane.items.is_empty() {
|
|
None
|
|
} else {
|
|
let active_item_id = pane.items[pane.active_item_index].id();
|
|
let task =
|
|
Self::close_items(workspace, pane_handle, cx, move |id| id != active_item_id);
|
|
Some(cx.foreground().spawn(async move {
|
|
task.await?;
|
|
Ok(())
|
|
}))
|
|
}
|
|
}
|
|
|
|
pub fn close_item(
|
|
workspace: &mut Workspace,
|
|
pane: ViewHandle<Pane>,
|
|
item_id_to_close: usize,
|
|
cx: &mut ViewContext<Workspace>,
|
|
) -> Task<Result<bool>> {
|
|
Self::close_items(workspace, pane, cx, move |view_id| {
|
|
view_id == item_id_to_close
|
|
})
|
|
}
|
|
|
|
pub fn close_items(
|
|
workspace: &mut Workspace,
|
|
pane: ViewHandle<Pane>,
|
|
cx: &mut ViewContext<Workspace>,
|
|
should_close: impl 'static + Fn(usize) -> bool,
|
|
) -> Task<Result<bool>> {
|
|
let project = workspace.project().clone();
|
|
|
|
// Find the items to close.
|
|
let mut items_to_close = Vec::new();
|
|
for item in &pane.read(cx).items {
|
|
if should_close(item.id()) {
|
|
items_to_close.push(item.boxed_clone());
|
|
}
|
|
}
|
|
|
|
// If a buffer is open both in a singleton editor and in a multibuffer, make sure
|
|
// to focus the singleton buffer when prompting to save that buffer, as opposed
|
|
// to focusing the multibuffer, because this gives the user a more clear idea
|
|
// of what content they would be saving.
|
|
items_to_close.sort_by_key(|item| !item.is_singleton(cx));
|
|
|
|
cx.spawn(|workspace, mut cx| async move {
|
|
let mut saved_project_entry_ids = HashSet::default();
|
|
for item in items_to_close.clone() {
|
|
// Find the item's current index and its set of project entries. Avoid
|
|
// storing these in advance, in case they have changed since this task
|
|
// was started.
|
|
let (item_ix, mut project_entry_ids) = pane.read_with(&cx, |pane, cx| {
|
|
(pane.index_for_item(&*item), item.project_entry_ids(cx))
|
|
});
|
|
let item_ix = if let Some(ix) = item_ix {
|
|
ix
|
|
} else {
|
|
continue;
|
|
};
|
|
|
|
// If an item hasn't yet been associated with a project entry, then always
|
|
// prompt to save it before closing it. Otherwise, check if the item has
|
|
// any project entries that are not open anywhere else in the workspace,
|
|
// AND that the user has not already been prompted to save. If there are
|
|
// any such project entries, prompt the user to save this item.
|
|
let should_save = if project_entry_ids.is_empty() {
|
|
true
|
|
} else {
|
|
workspace.read_with(&cx, |workspace, cx| {
|
|
for item in workspace.items(cx) {
|
|
if !items_to_close
|
|
.iter()
|
|
.any(|item_to_close| item_to_close.id() == item.id())
|
|
{
|
|
let other_project_entry_ids = item.project_entry_ids(cx);
|
|
project_entry_ids
|
|
.retain(|id| !other_project_entry_ids.contains(id));
|
|
}
|
|
}
|
|
});
|
|
project_entry_ids
|
|
.iter()
|
|
.any(|id| saved_project_entry_ids.insert(*id))
|
|
};
|
|
|
|
if should_save
|
|
&& !Self::save_item(project.clone(), &pane, item_ix, &*item, true, &mut cx)
|
|
.await?
|
|
{
|
|
break;
|
|
}
|
|
|
|
// Remove the item from the pane.
|
|
pane.update(&mut cx, |pane, cx| {
|
|
if let Some(item_ix) = pane.items.iter().position(|i| i.id() == item.id()) {
|
|
pane.remove_item(item_ix, cx);
|
|
}
|
|
});
|
|
}
|
|
|
|
pane.update(&mut cx, |_, cx| cx.notify());
|
|
Ok(true)
|
|
})
|
|
}
|
|
|
|
fn remove_item(&mut self, item_ix: usize, cx: &mut ViewContext<Self>) {
|
|
if item_ix == self.active_item_index {
|
|
// Activate the previous item if possible.
|
|
// This returns the user to the previously opened tab if they closed
|
|
// a new item they just navigated to.
|
|
if item_ix > 0 {
|
|
self.activate_prev_item(cx);
|
|
} else if item_ix + 1 < self.items.len() {
|
|
self.activate_next_item(cx);
|
|
}
|
|
}
|
|
|
|
let item = self.items.remove(item_ix);
|
|
cx.emit(Event::RemoveItem);
|
|
if self.items.is_empty() {
|
|
item.deactivated(cx);
|
|
self.update_toolbar(cx);
|
|
cx.emit(Event::Remove);
|
|
}
|
|
|
|
if item_ix < self.active_item_index {
|
|
self.active_item_index -= 1;
|
|
}
|
|
|
|
self.nav_history
|
|
.borrow_mut()
|
|
.set_mode(NavigationMode::ClosingItem);
|
|
item.deactivated(cx);
|
|
self.nav_history
|
|
.borrow_mut()
|
|
.set_mode(NavigationMode::Normal);
|
|
|
|
if let Some(path) = item.project_path(cx) {
|
|
self.nav_history
|
|
.borrow_mut()
|
|
.paths_by_item
|
|
.insert(item.id(), path);
|
|
} else {
|
|
self.nav_history
|
|
.borrow_mut()
|
|
.paths_by_item
|
|
.remove(&item.id());
|
|
}
|
|
|
|
cx.notify();
|
|
}
|
|
|
|
pub async fn save_item(
|
|
project: ModelHandle<Project>,
|
|
pane: &ViewHandle<Pane>,
|
|
item_ix: usize,
|
|
item: &dyn ItemHandle,
|
|
should_prompt_for_save: bool,
|
|
cx: &mut AsyncAppContext,
|
|
) -> Result<bool> {
|
|
const CONFLICT_MESSAGE: &str =
|
|
"This file has changed on disk since you started editing it. Do you want to overwrite it?";
|
|
const DIRTY_MESSAGE: &str = "This file contains unsaved edits. Do you want to save it?";
|
|
|
|
let (has_conflict, is_dirty, can_save, is_singleton) = cx.read(|cx| {
|
|
(
|
|
item.has_conflict(cx),
|
|
item.is_dirty(cx),
|
|
item.can_save(cx),
|
|
item.is_singleton(cx),
|
|
)
|
|
});
|
|
|
|
if has_conflict && can_save {
|
|
let mut answer = pane.update(cx, |pane, cx| {
|
|
pane.activate_item(item_ix, true, true, cx);
|
|
cx.prompt(
|
|
PromptLevel::Warning,
|
|
CONFLICT_MESSAGE,
|
|
&["Overwrite", "Discard", "Cancel"],
|
|
)
|
|
});
|
|
match answer.next().await {
|
|
Some(0) => cx.update(|cx| item.save(project, cx)).await?,
|
|
Some(1) => cx.update(|cx| item.reload(project, cx)).await?,
|
|
_ => return Ok(false),
|
|
}
|
|
} else if is_dirty && (can_save || is_singleton) {
|
|
let will_autosave = cx.read(|cx| {
|
|
matches!(
|
|
cx.global::<Settings>().autosave,
|
|
Autosave::OnFocusChange | Autosave::OnWindowChange
|
|
) && Self::can_autosave_item(&*item, cx)
|
|
});
|
|
let should_save = if should_prompt_for_save && !will_autosave {
|
|
let mut answer = pane.update(cx, |pane, cx| {
|
|
pane.activate_item(item_ix, true, true, cx);
|
|
cx.prompt(
|
|
PromptLevel::Warning,
|
|
DIRTY_MESSAGE,
|
|
&["Save", "Don't Save", "Cancel"],
|
|
)
|
|
});
|
|
match answer.next().await {
|
|
Some(0) => true,
|
|
Some(1) => false,
|
|
_ => return Ok(false),
|
|
}
|
|
} else {
|
|
true
|
|
};
|
|
|
|
if should_save {
|
|
if can_save {
|
|
cx.update(|cx| item.save(project, cx)).await?;
|
|
} else if is_singleton {
|
|
let start_abs_path = project
|
|
.read_with(cx, |project, cx| {
|
|
let worktree = project.visible_worktrees(cx).next()?;
|
|
Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
|
|
})
|
|
.unwrap_or_else(|| Path::new("").into());
|
|
|
|
let mut abs_path = cx.update(|cx| cx.prompt_for_new_path(&start_abs_path));
|
|
if let Some(abs_path) = abs_path.next().await.flatten() {
|
|
cx.update(|cx| item.save_as(project, abs_path, cx)).await?;
|
|
} else {
|
|
return Ok(false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
Ok(true)
|
|
}
|
|
|
|
fn can_autosave_item(item: &dyn ItemHandle, cx: &AppContext) -> bool {
|
|
let is_deleted = item.project_entry_ids(cx).is_empty();
|
|
item.is_dirty(cx) && !item.has_conflict(cx) && item.can_save(cx) && !is_deleted
|
|
}
|
|
|
|
pub fn autosave_item(
|
|
item: &dyn ItemHandle,
|
|
project: ModelHandle<Project>,
|
|
cx: &mut MutableAppContext,
|
|
) -> Task<Result<()>> {
|
|
if Self::can_autosave_item(item, cx) {
|
|
item.save(project, cx)
|
|
} else {
|
|
Task::ready(Ok(()))
|
|
}
|
|
}
|
|
|
|
pub fn focus_active_item(&mut self, cx: &mut ViewContext<Self>) {
|
|
if let Some(active_item) = self.active_item() {
|
|
cx.focus(active_item);
|
|
}
|
|
}
|
|
|
|
fn move_item(
|
|
workspace: &mut Workspace,
|
|
from: ViewHandle<Pane>,
|
|
to: ViewHandle<Pane>,
|
|
item_to_move: usize,
|
|
destination_index: usize,
|
|
cx: &mut ViewContext<Workspace>,
|
|
) {
|
|
let (item_ix, item_handle) = from
|
|
.read(cx)
|
|
.items()
|
|
.enumerate()
|
|
.find(|(_, item_handle)| item_handle.id() == item_to_move)
|
|
.expect("Tried to move item handle which was not in from pane");
|
|
|
|
// This automatically removes duplicate items in the pane
|
|
Pane::add_item_at(
|
|
workspace,
|
|
to.clone(),
|
|
item_handle.clone(),
|
|
true,
|
|
true,
|
|
Some(destination_index),
|
|
cx,
|
|
);
|
|
|
|
if from != to {
|
|
// Close item from previous pane
|
|
from.update(cx, |from, cx| {
|
|
from.remove_item(item_ix, cx);
|
|
});
|
|
}
|
|
|
|
cx.focus(to);
|
|
}
|
|
|
|
pub fn split(&mut self, direction: SplitDirection, cx: &mut ViewContext<Self>) {
|
|
cx.emit(Event::Split(direction));
|
|
}
|
|
|
|
fn deploy_split_menu(&mut self, action: &DeploySplitMenu, cx: &mut ViewContext<Self>) {
|
|
self.context_menu.update(cx, |menu, cx| {
|
|
menu.show(
|
|
action.position,
|
|
vec![
|
|
ContextMenuItem::item("Split Right", SplitRight),
|
|
ContextMenuItem::item("Split Left", SplitLeft),
|
|
ContextMenuItem::item("Split Up", SplitUp),
|
|
ContextMenuItem::item("Split Down", SplitDown),
|
|
],
|
|
cx,
|
|
);
|
|
});
|
|
}
|
|
|
|
fn deploy_new_menu(&mut self, action: &DeployNewMenu, cx: &mut ViewContext<Self>) {
|
|
self.context_menu.update(cx, |menu, cx| {
|
|
menu.show(
|
|
action.position,
|
|
vec![
|
|
ContextMenuItem::item("New File", NewFile),
|
|
ContextMenuItem::item("New Terminal", NewTerminal),
|
|
ContextMenuItem::item("New Search", NewSearch),
|
|
],
|
|
cx,
|
|
);
|
|
});
|
|
}
|
|
|
|
pub fn toolbar(&self) -> &ViewHandle<Toolbar> {
|
|
&self.toolbar
|
|
}
|
|
|
|
fn update_toolbar(&mut self, cx: &mut ViewContext<Self>) {
|
|
let active_item = self
|
|
.items
|
|
.get(self.active_item_index)
|
|
.map(|item| item.as_ref());
|
|
self.toolbar.update(cx, |toolbar, cx| {
|
|
toolbar.set_active_pane_item(active_item, cx);
|
|
});
|
|
}
|
|
|
|
fn render_tab_bar(&mut self, cx: &mut RenderContext<Self>) -> impl Element {
|
|
let theme = cx.global::<Settings>().theme.clone();
|
|
let filler_index = self.items.len();
|
|
|
|
enum Tabs {}
|
|
enum Tab {}
|
|
let pane = cx.handle();
|
|
MouseEventHandler::new::<Tabs, _, _>(0, cx, |mouse_state, cx| {
|
|
let autoscroll = if mem::take(&mut self.autoscroll) {
|
|
Some(self.active_item_index)
|
|
} else {
|
|
None
|
|
};
|
|
|
|
let pane_active = self.is_active;
|
|
|
|
let mut row = Flex::row().scrollable::<Tabs, _>(1, autoscroll, cx);
|
|
for (ix, (item, detail)) in self
|
|
.items
|
|
.iter()
|
|
.cloned()
|
|
.zip(self.tab_details(cx))
|
|
.enumerate()
|
|
{
|
|
let detail = if detail == 0 { None } else { Some(detail) };
|
|
let tab_active = ix == self.active_item_index;
|
|
|
|
row.add_child({
|
|
MouseEventHandler::new::<Tab, _, _>(ix, cx, {
|
|
let item = item.clone();
|
|
let pane = pane.clone();
|
|
let detail = detail.clone();
|
|
let hovered = mouse_state.hovered;
|
|
|
|
move |_, cx| {
|
|
Self::render_tab(
|
|
&item,
|
|
pane,
|
|
detail,
|
|
hovered,
|
|
pane_active,
|
|
tab_active,
|
|
cx,
|
|
)
|
|
}
|
|
})
|
|
.with_cursor_style(if pane_active && tab_active {
|
|
CursorStyle::Arrow
|
|
} else {
|
|
CursorStyle::PointingHand
|
|
})
|
|
.on_down(MouseButton::Left, move |_, cx| {
|
|
cx.dispatch_action(ActivateItem(ix));
|
|
})
|
|
.on_click(MouseButton::Middle, {
|
|
let item = item.clone();
|
|
let pane = pane.clone();
|
|
move |_, cx: &mut EventContext| {
|
|
cx.dispatch_action(CloseItem {
|
|
item_id: item.id(),
|
|
pane: pane.clone(),
|
|
})
|
|
}
|
|
})
|
|
.on_up(MouseButton::Left, {
|
|
let pane = pane.clone();
|
|
move |_, cx: &mut EventContext| Pane::handle_dropped_item(&pane, ix, cx)
|
|
})
|
|
.as_draggable(
|
|
DraggedItem {
|
|
item,
|
|
pane: pane.clone(),
|
|
},
|
|
{
|
|
let detail = detail.clone();
|
|
move |dragged_item, cx: &mut RenderContext<Workspace>| {
|
|
Pane::render_tab(
|
|
&dragged_item.item,
|
|
dragged_item.pane.clone(),
|
|
detail,
|
|
false,
|
|
pane_active,
|
|
tab_active,
|
|
cx,
|
|
)
|
|
}
|
|
},
|
|
)
|
|
.boxed()
|
|
})
|
|
}
|
|
|
|
let filler_style = theme.workspace.tab_bar.tab_style(pane_active, false);
|
|
row.add_child(
|
|
Empty::new()
|
|
.contained()
|
|
.with_style(filler_style.container)
|
|
.with_border(filler_style.container.border)
|
|
.flex(1., true)
|
|
.named("filler"),
|
|
);
|
|
|
|
row.boxed()
|
|
})
|
|
.on_up(MouseButton::Left, move |_, cx| {
|
|
Pane::handle_dropped_item(&pane, filler_index, cx)
|
|
})
|
|
}
|
|
|
|
fn tab_details(&self, cx: &AppContext) -> Vec<usize> {
|
|
let mut tab_details = (0..self.items.len()).map(|_| 0).collect::<Vec<_>>();
|
|
|
|
let mut tab_descriptions = HashMap::default();
|
|
let mut done = false;
|
|
while !done {
|
|
done = true;
|
|
|
|
// Store item indices by their tab description.
|
|
for (ix, (item, detail)) in self.items.iter().zip(&tab_details).enumerate() {
|
|
if let Some(description) = item.tab_description(*detail, cx) {
|
|
if *detail == 0
|
|
|| Some(&description) != item.tab_description(detail - 1, cx).as_ref()
|
|
{
|
|
tab_descriptions
|
|
.entry(description)
|
|
.or_insert(Vec::new())
|
|
.push(ix);
|
|
}
|
|
}
|
|
}
|
|
|
|
// If two or more items have the same tab description, increase their level
|
|
// of detail and try again.
|
|
for (_, item_ixs) in tab_descriptions.drain() {
|
|
if item_ixs.len() > 1 {
|
|
done = false;
|
|
for ix in item_ixs {
|
|
tab_details[ix] += 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
tab_details
|
|
}
|
|
|
|
fn render_tab<V: View>(
|
|
item: &Box<dyn ItemHandle>,
|
|
pane: WeakViewHandle<Pane>,
|
|
detail: Option<usize>,
|
|
hovered: bool,
|
|
pane_active: bool,
|
|
tab_active: bool,
|
|
cx: &mut RenderContext<V>,
|
|
) -> ElementBox {
|
|
let theme = cx.global::<Settings>().theme.clone();
|
|
let tab_style = theme.workspace.tab_bar.tab_style(pane_active, tab_active);
|
|
let title = item.tab_content(detail, tab_style, cx);
|
|
|
|
Flex::row()
|
|
.with_child(
|
|
Align::new({
|
|
let diameter = 7.0;
|
|
let icon_color = if item.has_conflict(cx) {
|
|
Some(tab_style.icon_conflict)
|
|
} else if item.is_dirty(cx) {
|
|
Some(tab_style.icon_dirty)
|
|
} else {
|
|
None
|
|
};
|
|
|
|
ConstrainedBox::new(
|
|
Canvas::new(move |bounds, _, cx| {
|
|
if let Some(color) = icon_color {
|
|
let square = RectF::new(bounds.origin(), vec2f(diameter, diameter));
|
|
cx.scene.push_quad(Quad {
|
|
bounds: square,
|
|
background: Some(color),
|
|
border: Default::default(),
|
|
corner_radius: diameter / 2.,
|
|
});
|
|
}
|
|
})
|
|
.boxed(),
|
|
)
|
|
.with_width(diameter)
|
|
.with_height(diameter)
|
|
.boxed()
|
|
})
|
|
.boxed(),
|
|
)
|
|
.with_child(
|
|
Container::new(Align::new(title).boxed())
|
|
.with_style(ContainerStyle {
|
|
margin: Margin {
|
|
left: tab_style.spacing,
|
|
right: tab_style.spacing,
|
|
..Default::default()
|
|
},
|
|
..Default::default()
|
|
})
|
|
.boxed(),
|
|
)
|
|
.with_child(
|
|
Align::new(
|
|
ConstrainedBox::new(if hovered {
|
|
let item_id = item.id();
|
|
enum TabCloseButton {}
|
|
let icon = Svg::new("icons/x_mark_thin_8.svg");
|
|
MouseEventHandler::new::<TabCloseButton, _, _>(
|
|
item_id,
|
|
cx,
|
|
|mouse_state, _| {
|
|
if mouse_state.hovered {
|
|
icon.with_color(tab_style.icon_close_active).boxed()
|
|
} else {
|
|
icon.with_color(tab_style.icon_close).boxed()
|
|
}
|
|
},
|
|
)
|
|
.with_padding(Padding::uniform(4.))
|
|
.with_cursor_style(CursorStyle::PointingHand)
|
|
.on_click(MouseButton::Left, {
|
|
let pane = pane.clone();
|
|
move |_, cx| {
|
|
cx.dispatch_action(CloseItem {
|
|
item_id,
|
|
pane: pane.clone(),
|
|
})
|
|
}
|
|
})
|
|
.on_click(MouseButton::Middle, |_, cx| cx.propogate_event())
|
|
.named("close-tab-icon")
|
|
} else {
|
|
Empty::new().boxed()
|
|
})
|
|
.with_width(tab_style.icon_width)
|
|
.boxed(),
|
|
)
|
|
.boxed(),
|
|
)
|
|
.contained()
|
|
.with_style(tab_style.container)
|
|
.constrained()
|
|
.with_height(tab_style.height)
|
|
.boxed()
|
|
}
|
|
|
|
fn handle_dropped_item(pane: &WeakViewHandle<Pane>, index: usize, cx: &mut EventContext) {
|
|
if let Some((_, dragged_item)) = cx
|
|
.global::<DragAndDrop<Workspace>>()
|
|
.currently_dragged::<DraggedItem>()
|
|
{
|
|
cx.dispatch_action(MoveItem {
|
|
item_id: dragged_item.item.id(),
|
|
from: dragged_item.pane.clone(),
|
|
to: pane.clone(),
|
|
destination_index: index,
|
|
})
|
|
} else {
|
|
cx.propogate_event();
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Entity for Pane {
|
|
type Event = Event;
|
|
}
|
|
|
|
impl View for Pane {
|
|
fn ui_name() -> &'static str {
|
|
"Pane"
|
|
}
|
|
|
|
fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
|
|
enum SplitIcon {}
|
|
|
|
let this = cx.handle();
|
|
|
|
Stack::new()
|
|
.with_child(
|
|
EventHandler::new(if let Some(active_item) = self.active_item() {
|
|
Flex::column()
|
|
.with_child({
|
|
let mut tab_row = Flex::row()
|
|
.with_child(self.render_tab_bar(cx).flex(1., true).named("tabs"));
|
|
|
|
if self.is_active {
|
|
tab_row.add_children([
|
|
MouseEventHandler::new::<SplitIcon, _, _>(
|
|
0,
|
|
cx,
|
|
|mouse_state, cx| {
|
|
let theme =
|
|
&cx.global::<Settings>().theme.workspace.tab_bar;
|
|
let style =
|
|
theme.pane_button.style_for(mouse_state, false);
|
|
Svg::new("icons/plus_12.svg")
|
|
.with_color(style.color)
|
|
.constrained()
|
|
.with_width(style.icon_width)
|
|
.aligned()
|
|
.contained()
|
|
.with_style(style.container)
|
|
.constrained()
|
|
.with_width(style.button_width)
|
|
.with_height(style.button_width)
|
|
.aligned()
|
|
.boxed()
|
|
},
|
|
)
|
|
.with_cursor_style(CursorStyle::PointingHand)
|
|
.on_down(MouseButton::Left, |e, cx| {
|
|
cx.dispatch_action(DeployNewMenu {
|
|
position: e.position,
|
|
});
|
|
})
|
|
.boxed(),
|
|
MouseEventHandler::new::<SplitIcon, _, _>(
|
|
1,
|
|
cx,
|
|
|mouse_state, cx| {
|
|
let theme =
|
|
&cx.global::<Settings>().theme.workspace.tab_bar;
|
|
let style =
|
|
theme.pane_button.style_for(mouse_state, false);
|
|
Svg::new("icons/split_12.svg")
|
|
.with_color(style.color)
|
|
.constrained()
|
|
.with_width(style.icon_width)
|
|
.aligned()
|
|
.contained()
|
|
.with_style(style.container)
|
|
.constrained()
|
|
.with_width(style.button_width)
|
|
.with_height(style.button_width)
|
|
.aligned()
|
|
.boxed()
|
|
},
|
|
)
|
|
.with_cursor_style(CursorStyle::PointingHand)
|
|
.on_down(MouseButton::Left, |e, cx| {
|
|
cx.dispatch_action(DeploySplitMenu {
|
|
position: e.position,
|
|
});
|
|
})
|
|
.boxed(),
|
|
])
|
|
}
|
|
|
|
tab_row
|
|
.constrained()
|
|
.with_height(cx.global::<Settings>().theme.workspace.tab_bar.height)
|
|
.boxed()
|
|
})
|
|
.with_child(ChildView::new(&self.toolbar).boxed())
|
|
.with_child(ChildView::new(active_item).flex(1., true).boxed())
|
|
.boxed()
|
|
} else {
|
|
enum EmptyPane {}
|
|
let theme = cx.global::<Settings>().theme.clone();
|
|
|
|
MouseEventHandler::new::<EmptyPane, _, _>(0, cx, |_, _| {
|
|
Empty::new()
|
|
.contained()
|
|
.with_background_color(theme.workspace.background)
|
|
.boxed()
|
|
})
|
|
.on_down(MouseButton::Left, |_, cx| {
|
|
cx.focus_parent_view();
|
|
})
|
|
.boxed()
|
|
})
|
|
.on_navigate_mouse_down(move |direction, cx| {
|
|
let this = this.clone();
|
|
match direction {
|
|
NavigationDirection::Back => {
|
|
cx.dispatch_action(GoBack { pane: Some(this) })
|
|
}
|
|
NavigationDirection::Forward => {
|
|
cx.dispatch_action(GoForward { pane: Some(this) })
|
|
}
|
|
}
|
|
|
|
true
|
|
})
|
|
.boxed(),
|
|
)
|
|
.with_child(ChildView::new(&self.context_menu).boxed())
|
|
.named("pane")
|
|
}
|
|
|
|
fn on_focus_in(&mut self, focused: AnyViewHandle, cx: &mut ViewContext<Self>) {
|
|
if cx.is_self_focused() {
|
|
if let Some(last_focused_view) = self
|
|
.last_focused_view
|
|
.as_ref()
|
|
.and_then(|handle| handle.upgrade(cx))
|
|
{
|
|
cx.focus(last_focused_view);
|
|
} else {
|
|
self.focus_active_item(cx);
|
|
}
|
|
} else {
|
|
self.last_focused_view = Some(focused.downgrade());
|
|
}
|
|
cx.emit(Event::Focused);
|
|
}
|
|
}
|
|
|
|
impl ItemNavHistory {
|
|
pub fn push<D: 'static + Any>(&self, data: Option<D>, cx: &mut MutableAppContext) {
|
|
self.history.borrow_mut().push(data, self.item.clone(), cx);
|
|
}
|
|
|
|
pub fn pop_backward(&self, cx: &mut MutableAppContext) -> Option<NavigationEntry> {
|
|
self.history.borrow_mut().pop(NavigationMode::GoingBack, cx)
|
|
}
|
|
|
|
pub fn pop_forward(&self, cx: &mut MutableAppContext) -> Option<NavigationEntry> {
|
|
self.history
|
|
.borrow_mut()
|
|
.pop(NavigationMode::GoingForward, cx)
|
|
}
|
|
}
|
|
|
|
impl NavHistory {
|
|
fn set_mode(&mut self, mode: NavigationMode) {
|
|
self.mode = mode;
|
|
}
|
|
|
|
fn disable(&mut self) {
|
|
self.mode = NavigationMode::Disabled;
|
|
}
|
|
|
|
fn enable(&mut self) {
|
|
self.mode = NavigationMode::Normal;
|
|
}
|
|
|
|
fn pop(&mut self, mode: NavigationMode, cx: &mut MutableAppContext) -> Option<NavigationEntry> {
|
|
let entry = match mode {
|
|
NavigationMode::Normal | NavigationMode::Disabled | NavigationMode::ClosingItem => {
|
|
return None
|
|
}
|
|
NavigationMode::GoingBack => &mut self.backward_stack,
|
|
NavigationMode::GoingForward => &mut self.forward_stack,
|
|
NavigationMode::ReopeningClosedItem => &mut self.closed_stack,
|
|
}
|
|
.pop_back();
|
|
if entry.is_some() {
|
|
self.did_update(cx);
|
|
}
|
|
entry
|
|
}
|
|
|
|
fn push<D: 'static + Any>(
|
|
&mut self,
|
|
data: Option<D>,
|
|
item: Rc<dyn WeakItemHandle>,
|
|
cx: &mut MutableAppContext,
|
|
) {
|
|
match self.mode {
|
|
NavigationMode::Disabled => {}
|
|
NavigationMode::Normal | NavigationMode::ReopeningClosedItem => {
|
|
if self.backward_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
|
|
self.backward_stack.pop_front();
|
|
}
|
|
self.backward_stack.push_back(NavigationEntry {
|
|
item,
|
|
data: data.map(|data| Box::new(data) as Box<dyn Any>),
|
|
});
|
|
self.forward_stack.clear();
|
|
}
|
|
NavigationMode::GoingBack => {
|
|
if self.forward_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
|
|
self.forward_stack.pop_front();
|
|
}
|
|
self.forward_stack.push_back(NavigationEntry {
|
|
item,
|
|
data: data.map(|data| Box::new(data) as Box<dyn Any>),
|
|
});
|
|
}
|
|
NavigationMode::GoingForward => {
|
|
if self.backward_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
|
|
self.backward_stack.pop_front();
|
|
}
|
|
self.backward_stack.push_back(NavigationEntry {
|
|
item,
|
|
data: data.map(|data| Box::new(data) as Box<dyn Any>),
|
|
});
|
|
}
|
|
NavigationMode::ClosingItem => {
|
|
if self.closed_stack.len() >= MAX_NAVIGATION_HISTORY_LEN {
|
|
self.closed_stack.pop_front();
|
|
}
|
|
self.closed_stack.push_back(NavigationEntry {
|
|
item,
|
|
data: data.map(|data| Box::new(data) as Box<dyn Any>),
|
|
});
|
|
}
|
|
}
|
|
self.did_update(cx);
|
|
}
|
|
|
|
fn did_update(&self, cx: &mut MutableAppContext) {
|
|
if let Some(pane) = self.pane.upgrade(cx) {
|
|
cx.defer(move |cx| pane.update(cx, |pane, cx| pane.history_updated(cx)));
|
|
}
|
|
}
|
|
}
|