285 lines
8.3 KiB
Rust
285 lines
8.3 KiB
Rust
use super::{ItemViewHandle, SplitDirection};
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use crate::{settings::Settings, watch};
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use gpui::{
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color::ColorU, elements::*, keymap::Binding, App, AppContext, ChildView, Entity, View,
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ViewContext,
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};
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use std::cmp;
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pub fn init(app: &mut App) {
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app.add_action(
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"pane:activate_item",
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|pane: &mut Pane, index: &usize, ctx| {
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pane.activate_item(*index, ctx);
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},
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);
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app.add_action("pane:activate_prev_item", |pane: &mut Pane, _: &(), ctx| {
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pane.activate_prev_item(ctx);
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});
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app.add_action("pane:activate_next_item", |pane: &mut Pane, _: &(), ctx| {
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pane.activate_next_item(ctx);
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});
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app.add_action("pane:close_active_item", |pane: &mut Pane, _: &(), ctx| {
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pane.close_active_item(ctx);
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});
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app.add_action("pane:split_up", |pane: &mut Pane, _: &(), ctx| {
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pane.split(SplitDirection::Up, ctx);
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});
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app.add_action("pane:split_down", |pane: &mut Pane, _: &(), ctx| {
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pane.split(SplitDirection::Down, ctx);
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});
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app.add_action("pane:split_left", |pane: &mut Pane, _: &(), ctx| {
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pane.split(SplitDirection::Left, ctx);
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});
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app.add_action("pane:split_right", |pane: &mut Pane, _: &(), ctx| {
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pane.split(SplitDirection::Right, ctx);
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});
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app.add_bindings(vec![
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Binding::new("shift-cmd-{", "pane:activate_prev_item", Some("Pane")),
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Binding::new("shift-cmd-}", "pane:activate_next_item", Some("Pane")),
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Binding::new("cmd-w", "pane:close_active_item", Some("Pane")),
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Binding::new("cmd-k up", "pane:split_up", Some("Pane")),
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Binding::new("cmd-k down", "pane:split_down", Some("Pane")),
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Binding::new("cmd-k left", "pane:split_left", Some("Pane")),
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Binding::new("cmd-k right", "pane:split_right", Some("Pane")),
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]);
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}
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pub enum Event {
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Activate,
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Remove,
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Split(SplitDirection),
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}
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#[derive(Debug, Eq, PartialEq)]
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pub struct State {
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pub tabs: Vec<TabState>,
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}
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#[derive(Debug, Eq, PartialEq)]
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pub struct TabState {
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pub title: String,
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pub active: bool,
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}
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pub struct Pane {
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items: Vec<Box<dyn ItemViewHandle>>,
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active_item: usize,
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settings: watch::Receiver<Settings>,
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}
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impl Pane {
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pub fn new(settings: watch::Receiver<Settings>) -> Self {
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Self {
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items: Vec::new(),
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active_item: 0,
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settings,
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}
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}
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pub fn activate(&self, ctx: &mut ViewContext<Self>) {
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ctx.emit(Event::Activate);
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}
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pub fn add_item(
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&mut self,
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item: Box<dyn ItemViewHandle>,
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ctx: &mut ViewContext<Self>,
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) -> usize {
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let item_idx = cmp::min(self.active_item + 1, self.items.len());
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self.items.insert(item_idx, item);
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ctx.notify();
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item_idx
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}
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#[cfg(test)]
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pub fn items(&self) -> &[Box<dyn ItemViewHandle>] {
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&self.items
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}
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pub fn active_item(&self) -> Option<Box<dyn ItemViewHandle>> {
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self.items.get(self.active_item).cloned()
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}
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pub fn activate_entry(
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&mut self,
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entry_id: (usize, usize),
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ctx: &mut ViewContext<Self>,
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) -> bool {
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if let Some(index) = self
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.items
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.iter()
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.position(|item| item.entry_id(ctx.app()).map_or(false, |id| id == entry_id))
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{
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self.activate_item(index, ctx);
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true
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} else {
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false
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}
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}
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pub fn item_index(&self, item: &dyn ItemViewHandle) -> Option<usize> {
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self.items.iter().position(|i| i.id() == item.id())
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}
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pub fn activate_item(&mut self, index: usize, ctx: &mut ViewContext<Self>) {
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if index < self.items.len() {
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self.active_item = index;
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self.focus_active_item(ctx);
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ctx.notify();
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}
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}
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pub fn activate_prev_item(&mut self, ctx: &mut ViewContext<Self>) {
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if self.active_item > 0 {
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self.active_item -= 1;
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} else {
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self.active_item = self.items.len() - 1;
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}
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self.focus_active_item(ctx);
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ctx.notify();
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}
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pub fn activate_next_item(&mut self, ctx: &mut ViewContext<Self>) {
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if self.active_item + 1 < self.items.len() {
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self.active_item += 1;
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} else {
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self.active_item = 0;
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}
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self.focus_active_item(ctx);
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ctx.notify();
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}
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pub fn close_active_item(&mut self, ctx: &mut ViewContext<Self>) {
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if !self.items.is_empty() {
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self.items.remove(self.active_item);
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if self.active_item >= self.items.len() {
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self.active_item = self.items.len().saturating_sub(1);
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}
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ctx.notify();
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}
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if self.items.is_empty() {
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ctx.emit(Event::Remove);
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}
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}
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fn focus_active_item(&mut self, ctx: &mut ViewContext<Self>) {
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if let Some(active_item) = self.active_item() {
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ctx.focus(active_item.to_any());
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}
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}
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pub fn split(&mut self, direction: SplitDirection, ctx: &mut ViewContext<Self>) {
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ctx.emit(Event::Split(direction));
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}
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fn render_tabs<'a>(&self, app: &AppContext) -> Box<dyn Element> {
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let settings = smol::block_on(self.settings.read());
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let border_color = ColorU::new(0xdb, 0xdb, 0xdc, 0xff);
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let mut row = Flex::row();
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let last_item_ix = self.items.len() - 1;
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for (ix, item) in self.items.iter().enumerate() {
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let title = item.title(app);
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let mut border = Border::new(1.0, border_color);
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border.left = ix > 0;
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border.right = ix == last_item_ix;
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border.bottom = ix != self.active_item;
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let mut container = Container::new(
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Align::new(
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Label::new(title, settings.ui_font_family, settings.ui_font_size).boxed(),
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)
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.boxed(),
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)
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.with_uniform_padding(6.0)
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.with_border(border);
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if ix == self.active_item {
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container = container
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.with_background_color(ColorU::white())
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.with_overdraw_bottom(1.5);
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} else {
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container = container.with_background_color(ColorU::new(0xea, 0xea, 0xeb, 0xff));
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}
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row.add_child(
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Expanded::new(
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1.0,
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ConstrainedBox::new(
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EventHandler::new(container.boxed())
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.on_mouse_down(move |ctx, _| {
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ctx.dispatch_action("pane:activate_item", ix);
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true
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})
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.boxed(),
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)
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.with_max_width(264.0)
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.boxed(),
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)
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.boxed(),
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);
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}
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row.add_child(
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Expanded::new(
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1.0,
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Container::new(
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LineBox::new(
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settings.ui_font_family,
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settings.ui_font_size,
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Empty::new().boxed(),
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)
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.boxed(),
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)
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.with_uniform_padding(6.0)
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.with_border(Border::bottom(1.0, border_color))
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.boxed(),
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)
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.boxed(),
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);
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row.boxed()
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}
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}
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impl Entity for Pane {
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type Event = Event;
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}
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impl View for Pane {
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fn ui_name() -> &'static str {
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"Pane"
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}
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fn render<'a>(&self, app: &AppContext) -> Box<dyn Element> {
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if let Some(active_item) = self.active_item() {
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Flex::column()
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.with_child(self.render_tabs(app))
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.with_child(Expanded::new(1.0, ChildView::new(active_item.id()).boxed()).boxed())
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.boxed()
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} else {
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Empty::new().boxed()
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}
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}
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fn on_focus(&mut self, ctx: &mut ViewContext<Self>) {
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self.focus_active_item(ctx);
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}
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// fn state(&self, app: &AppContext) -> Self::State {
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// State {
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// tabs: self
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// .items
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// .iter()
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// .enumerate()
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// .map(|(idx, item)| TabState {
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// title: item.title(app),
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// active: idx == self.active_item,
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// })
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// .collect(),
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// }
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// }
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}
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