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Wire up global actions

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Added an ephemeral root node so that even if there's no window/focused handle we still have something to dispatch to.

Co-authored-by: Antonio <antonio@zed.dev>
This commit is contained in:
Piotr Osiewicz 2023-12-06 16:15:53 +01:00
parent 1f538c5fdd
commit d09dfe01f5
5 changed files with 162 additions and 132 deletions
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63
crates/editor2/src/element.rs
View file

@ -2803,35 +2803,46 @@ impl Element for EditorElement {
let focus_handle = editor.focus_handle(cx);
let dispatch_context = self.editor.read(cx).dispatch_context(cx);
cx.with_key_dispatch(dispatch_context, Some(focus_handle.clone()), |_, cx| {
self.register_actions(cx);
self.register_key_listeners(cx);
cx.with_key_dispatch(
Some(dispatch_context),
Some(focus_handle.clone()),
|_, cx| {
self.register_actions(cx);
self.register_key_listeners(cx);
// We call with_z_index to establish a new stacking context.
cx.with_z_index(0, |cx| {
cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
// Paint mouse listeners at z-index 0 so any elements we paint on top of the editor
// take precedence.
cx.with_z_index(0, |cx| {
self.paint_mouse_listeners(bounds, gutter_bounds, text_bounds, &layout, cx);
// We call with_z_index to establish a new stacking context.
cx.with_z_index(0, |cx| {
cx.with_content_mask(Some(ContentMask { bounds }), |cx| {
// Paint mouse listeners at z-index 0 so any elements we paint on top of the editor
// take precedence.
cx.with_z_index(0, |cx| {
self.paint_mouse_listeners(
bounds,
gutter_bounds,
text_bounds,
&layout,
cx,
);
});
let input_handler =
ElementInputHandler::new(bounds, self.editor.clone(), cx);
cx.handle_input(&focus_handle, input_handler);
self.paint_background(gutter_bounds, text_bounds, &layout, cx);
if layout.gutter_size.width > Pixels::ZERO {
self.paint_gutter(gutter_bounds, &mut layout, cx);
}
self.paint_text(text_bounds, &mut layout, cx);
if !layout.blocks.is_empty() {
cx.with_element_id(Some("editor_blocks"), |cx| {
self.paint_blocks(bounds, &mut layout, cx);
})
}
});
let input_handler = ElementInputHandler::new(bounds, self.editor.clone(), cx);
cx.handle_input(&focus_handle, input_handler);
self.paint_background(gutter_bounds, text_bounds, &layout, cx);
if layout.gutter_size.width > Pixels::ZERO {
self.paint_gutter(gutter_bounds, &mut layout, cx);
}
self.paint_text(text_bounds, &mut layout, cx);
if !layout.blocks.is_empty() {
cx.with_element_id(Some("editor_blocks"), |cx| {
self.paint_blocks(bounds, &mut layout, cx);
})
}
});
});
})
},
)
}
}

6
crates/gpui2/src/app.rs
View file

@ -201,7 +201,7 @@ pub struct AppContext {
pub(crate) windows: SlotMap<WindowId, Option<Window>>,
pub(crate) keymap: Arc<Mutex<Keymap>>,
pub(crate) global_action_listeners:
HashMap<TypeId, Vec<Box<dyn Fn(&dyn Action, DispatchPhase, &mut Self)>>>,
HashMap<TypeId, Vec<Rc<dyn Fn(&dyn Any, DispatchPhase, &mut Self)>>>,
pending_effects: VecDeque<Effect>,
pub(crate) pending_notifications: HashSet<EntityId>,
pub(crate) pending_global_notifications: HashSet<TypeId>,
@ -962,9 +962,9 @@ impl AppContext {
self.global_action_listeners
.entry(TypeId::of::<A>())
.or_default()
.push(Box::new(move |action, phase, cx| {
.push(Rc::new(move |action, phase, cx| {
if phase == DispatchPhase::Bubble {
let action = action.as_any().downcast_ref().unwrap();
let action = action.downcast_ref().unwrap();
listener(action, cx)
}
}));

6
crates/gpui2/src/elements/div.rs
View file

@ -55,7 +55,7 @@ pub trait InteractiveElement: Sized + Element {
E: Debug,
{
if let Some(key_context) = key_context.try_into().log_err() {
self.interactivity().key_context = key_context;
self.interactivity().key_context = Some(key_context);
}
self
}
@ -722,7 +722,7 @@ impl DivState {
pub struct Interactivity {
pub element_id: Option<ElementId>,
pub key_context: KeyContext,
pub key_context: Option<KeyContext>,
pub focusable: bool,
pub tracked_focus_handle: Option<FocusHandle>,
pub scroll_handle: Option<ScrollHandle>,
@ -1238,7 +1238,7 @@ impl Default for Interactivity {
fn default() -> Self {
Self {
element_id: None,
key_context: KeyContext::default(),
key_context: None,
focusable: false,
tracked_focus_handle: None,
scroll_handle: None,

25
crates/gpui2/src/key_dispatch.rs
View file

@ -61,7 +61,7 @@ impl DispatchTree {
self.keystroke_matchers.clear();
}
pub fn push_node(&mut self, context: KeyContext) {
pub fn push_node(&mut self, context: Option<KeyContext>) {
let parent = self.node_stack.last().copied();
let node_id = DispatchNodeId(self.nodes.len());
self.nodes.push(DispatchNode {
@ -69,7 +69,7 @@ impl DispatchTree {
..Default::default()
});
self.node_stack.push(node_id);
if !context.is_empty() {
if let Some(context) = context {
self.active_node().context = context.clone();
self.context_stack.push(context);
}
@ -148,16 +148,14 @@ impl DispatchTree {
false
}
pub fn available_actions(&self, target: FocusId) -> Vec<Box<dyn Action>> {
pub fn available_actions(&self, target: DispatchNodeId) -> Vec<Box<dyn Action>> {
let mut actions = Vec::new();
if let Some(node) = self.focusable_node_ids.get(&target) {
for node_id in self.dispatch_path(*node) {
let node = &self.nodes[node_id.0];
for DispatchActionListener { action_type, .. } in &node.action_listeners {
// Intentionally silence these errors without logging.
// If an action cannot be built by default, it's not available.
actions.extend(self.action_registry.build_action_type(action_type).ok());
}
for node_id in self.dispatch_path(target) {
let node = &self.nodes[node_id.0];
for DispatchActionListener { action_type, .. } in &node.action_listeners {
// Intentionally silence these errors without logging.
// If an action cannot be built by default, it's not available.
actions.extend(self.action_registry.build_action_type(action_type).ok());
}
}
actions
@ -236,6 +234,11 @@ impl DispatchTree {
self.focusable_node_ids.get(&target).copied()
}
pub fn root_node_id(&self) -> DispatchNodeId {
debug_assert!(!self.nodes.is_empty());
DispatchNodeId(0)
}
fn active_node_id(&self) -> DispatchNodeId {
*self.node_stack.last().unwrap()
}

194
crates/gpui2/src/window.rs
View file

@ -453,19 +453,21 @@ impl<'a> WindowContext<'a> {
}
pub fn dispatch_action(&mut self, action: Box<dyn Action>) {
if let Some(focus_handle) = self.focused() {
self.defer(move |cx| {
if let Some(node_id) = cx
.window
.current_frame
.dispatch_tree
.focusable_node_id(focus_handle.id)
{
cx.propagate_event = true;
cx.dispatch_action_on_node(node_id, action);
}
})
}
let focus_handle = self.focused();
self.defer(move |cx| {
let node_id = focus_handle
.and_then(|handle| {
cx.window
.current_frame
.dispatch_tree
.focusable_node_id(handle.id)
})
.unwrap_or_else(|| cx.window.current_frame.dispatch_tree.root_node_id());
cx.propagate_event = true;
cx.dispatch_action_on_node(node_id, action);
})
}
/// Schedules the given function to be run at the end of the current effect cycle, allowing entities
@ -1154,8 +1156,19 @@ impl<'a> WindowContext<'a> {
self.start_frame();
self.with_z_index(0, |cx| {
let available_space = cx.window.viewport_size.map(Into::into);
root_view.draw(Point::zero(), available_space, cx);
cx.with_key_dispatch(Some(KeyContext::default()), None, |_, cx| {
for (action_type, action_listeners) in &cx.app.global_action_listeners {
for action_listener in action_listeners.iter().cloned() {
cx.window.current_frame.dispatch_tree.on_action(
*action_type,
Rc::new(move |action, phase, cx| action_listener(action, phase, cx)),
)
}
}
let available_space = cx.window.viewport_size.map(Into::into);
root_view.draw(Point::zero(), available_space, cx);
})
});
if let Some(active_drag) = self.app.active_drag.take() {
@ -1338,75 +1351,79 @@ impl<'a> WindowContext<'a> {
}
fn dispatch_key_event(&mut self, event: &dyn Any) {
if let Some(node_id) = self.window.focus.and_then(|focus_id| {
self.window
.current_frame
.dispatch_tree
.focusable_node_id(focus_id)
}) {
let dispatch_path = self
.window
.current_frame
.dispatch_tree
.dispatch_path(node_id);
let node_id = self
.window
.focus
.and_then(|focus_id| {
self.window
.current_frame
.dispatch_tree
.focusable_node_id(focus_id)
})
.unwrap_or_else(|| self.window.current_frame.dispatch_tree.root_node_id());
let mut actions: Vec<Box<dyn Action>> = Vec::new();
let dispatch_path = self
.window
.current_frame
.dispatch_tree
.dispatch_path(node_id);
// Capture phase
let mut context_stack: SmallVec<[KeyContext; 16]> = SmallVec::new();
self.propagate_event = true;
let mut actions: Vec<Box<dyn Action>> = Vec::new();
for node_id in &dispatch_path {
let node = self.window.current_frame.dispatch_tree.node(*node_id);
// Capture phase
let mut context_stack: SmallVec<[KeyContext; 16]> = SmallVec::new();
self.propagate_event = true;
if !node.context.is_empty() {
context_stack.push(node.context.clone());
}
for node_id in &dispatch_path {
let node = self.window.current_frame.dispatch_tree.node(*node_id);
for key_listener in node.key_listeners.clone() {
key_listener(event, DispatchPhase::Capture, self);
if !self.propagate_event {
return;
}
}
if !node.context.is_empty() {
context_stack.push(node.context.clone());
}
// Bubble phase
for node_id in dispatch_path.iter().rev() {
// Handle low level key events
let node = self.window.current_frame.dispatch_tree.node(*node_id);
for key_listener in node.key_listeners.clone() {
key_listener(event, DispatchPhase::Bubble, self);
if !self.propagate_event {
return;
}
}
// Match keystrokes
let node = self.window.current_frame.dispatch_tree.node(*node_id);
if !node.context.is_empty() {
if let Some(key_down_event) = event.downcast_ref::<KeyDownEvent>() {
if let Some(found) = self
.window
.current_frame
.dispatch_tree
.dispatch_key(&key_down_event.keystroke, &context_stack)
{
actions.push(found.boxed_clone())
}
}
context_stack.pop();
}
}
for action in actions {
self.dispatch_action_on_node(node_id, action);
for key_listener in node.key_listeners.clone() {
key_listener(event, DispatchPhase::Capture, self);
if !self.propagate_event {
return;
}
}
}
// Bubble phase
for node_id in dispatch_path.iter().rev() {
// Handle low level key events
let node = self.window.current_frame.dispatch_tree.node(*node_id);
for key_listener in node.key_listeners.clone() {
key_listener(event, DispatchPhase::Bubble, self);
if !self.propagate_event {
return;
}
}
// Match keystrokes
let node = self.window.current_frame.dispatch_tree.node(*node_id);
if !node.context.is_empty() {
if let Some(key_down_event) = event.downcast_ref::<KeyDownEvent>() {
if let Some(found) = self
.window
.current_frame
.dispatch_tree
.dispatch_key(&key_down_event.keystroke, &context_stack)
{
actions.push(found.boxed_clone())
}
}
context_stack.pop();
}
}
for action in actions {
self.dispatch_action_on_node(node_id, action);
if !self.propagate_event {
return;
}
}
}
fn dispatch_action_on_node(&mut self, node_id: DispatchNodeId, action: Box<dyn Action>) {
@ -1490,22 +1507,21 @@ impl<'a> WindowContext<'a> {
}
pub fn available_actions(&self) -> Vec<Box<dyn Action>> {
if let Some(focus_id) = self.window.focus {
let mut actions = self
.window
.current_frame
.dispatch_tree
.available_actions(focus_id);
actions.extend(
self.app
.global_action_listeners
.keys()
.filter_map(|type_id| self.app.actions.build_action_type(type_id).ok()),
);
actions
} else {
Vec::new()
}
let node_id = self
.window
.focus
.and_then(|focus_id| {
self.window
.current_frame
.dispatch_tree
.focusable_node_id(focus_id)
})
.unwrap_or_else(|| self.window.current_frame.dispatch_tree.root_node_id());
self.window
.current_frame
.dispatch_tree
.available_actions(node_id)
}
pub fn bindings_for_action(&self, action: &dyn Action) -> Vec<KeyBinding> {
@ -1561,7 +1577,7 @@ impl<'a> WindowContext<'a> {
//========== ELEMENT RELATED FUNCTIONS ===========
pub fn with_key_dispatch<R>(
&mut self,
context: KeyContext,
context: Option<KeyContext>,
focus_handle: Option<FocusHandle>,
f: impl FnOnce(Option<FocusHandle>, &mut Self) -> R,
) -> R {