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Add Cursive::on_event

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This commit is contained in:
Alexandre Bury 2018-09-05 08:55:29 -07:00
parent b21224cf1c
commit be977c705f
1 changed files with 48 additions and 42 deletions
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90
src/cursive.rs
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@ -633,7 +633,7 @@ impl Cursive {
} }
// Handles a key event when it was ignored by the current view // Handles a key event when it was ignored by the current view
fn on_event(&mut self, event: Event) { fn on_ignored_event(&mut self, event: Event) {
let cb_list = match self.global_callbacks.get(&event) { let cb_list = match self.global_callbacks.get(&event) {
None => return, None => return,
Some(cb_list) => cb_list.clone(), Some(cb_list) => cb_list.clone(),
@ -644,6 +644,52 @@ impl Cursive {
} }
} }
/// Processes an event.
///
/// * If the menubar is active, it will be handled the event.
/// * The view tree will be handled the event.
/// * If ignored, global_callbacks will be checked for this event.
pub fn on_event(&mut self, event: Event) {
if event == Event::Exit {
self.quit();
}
if event == Event::WindowResize {
self.clear();
}
if let Event::Mouse {
event, position, ..
} = event
{
if event.grabs_focus()
&& !self.menubar.autohide
&& !self.menubar.has_submenu()
&& position.y == 0
{
self.select_menubar();
}
}
// Event dispatch order:
// * Focused element:
// * Menubar (if active)
// * Current screen (top layer)
// * Global callbacks
if self.menubar.receive_events() {
self.menubar.on_event(event).process(self);
} else {
let offset = if self.menubar.autohide { 0 } else { 1 };
match self.screen_mut().on_event(event.relativized((0, offset))) {
// If the event was ignored,
// it is our turn to play with it.
EventResult::Ignored => self.on_ignored_event(event),
EventResult::Consumed(None) => (),
EventResult::Consumed(Some(cb)) => cb(self),
}
}
}
/// Returns the size of the screen, in characters. /// Returns the size of the screen, in characters.
pub fn screen_size(&self) -> Vec2 { pub fn screen_size(&self) -> Vec2 {
self.backend.screen_size() self.backend.screen_size()
@ -753,47 +799,7 @@ impl Cursive {
fn handle_interruption(&mut self, interruption: Interruption) { fn handle_interruption(&mut self, interruption: Interruption) {
match interruption { match interruption {
Interruption::Event(event) => { Interruption::Event(event) => {
if event == Event::Exit { self.on_event(event);
self.quit();
}
if event == Event::WindowResize {
self.clear();
}
if let Event::Mouse {
event, position, ..
} = event
{
if event.grabs_focus()
&& !self.menubar.autohide
&& !self.menubar.has_submenu()
&& position.y == 0
{
self.select_menubar();
}
}
// Event dispatch order:
// * Focused element:
// * Menubar (if active)
// * Current screen (top layer)
// * Global callbacks
if self.menubar.receive_events() {
self.menubar.on_event(event).process(self);
} else {
let offset = if self.menubar.autohide { 0 } else { 1 };
match self
.screen_mut()
.on_event(event.relativized((0, offset)))
{
// If the event was ignored,
// it is our turn to play with it.
EventResult::Ignored => self.on_event(event),
EventResult::Consumed(None) => (),
EventResult::Consumed(Some(cb)) => cb(self),
}
}
} }
Interruption::Callback(cb) => { Interruption::Callback(cb) => {
cb.call_box(self); cb.call_box(self);