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Fire mouseenter and mouseleave events

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This commit is contained in:
Utsav Oza 2020-07-27 19:39:29 +05:30
parent 5fe54b8003
commit c235e1ee43
1 changed files with 81 additions and 6 deletions
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87
components/script/dom/document.rs
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@ -189,10 +189,13 @@ pub enum TouchEventResult {
Forwarded,
}
#[derive(Clone, Copy, PartialEq)]
pub enum FireMouseEventType {
Move,
Over,
Out,
Enter,
Leave,
}
impl FireMouseEventType {
@ -201,6 +204,8 @@ impl FireMouseEventType {
&FireMouseEventType::Move => "mousemove",
&FireMouseEventType::Over => "mouseover",
&FireMouseEventType::Out => "mouseout",
&FireMouseEventType::Enter => "mouseenter",
&FireMouseEventType::Leave => "mouseleave",
}
}
}
@ -1343,6 +1348,8 @@ impl Document {
client_point: Point2D<f32>,
target: &EventTarget,
event_name: FireMouseEventType,
can_bubble: EventBubbles,
cancelable: EventCancelable,
pressed_mouse_buttons: u16,
) {
let client_x = client_point.x.to_i32().unwrap_or(0);
@ -1351,8 +1358,8 @@ impl Document {
let mouse_event = MouseEvent::new(
&self.window,
DOMString::from(event_name.as_str()),
EventBubbles::Bubbles,
EventCancelable::Cancelable,
can_bubble,
cancelable,
Some(&self.window),
0i32,
client_x,
@ -1430,11 +1437,22 @@ impl Document {
client_point,
old_target.upcast(),
FireMouseEventType::Out,
EventBubbles::Bubbles,
EventCancelable::Cancelable,
pressed_mouse_buttons,
);
// TODO: Fire mouseleave here only if the old target is
// not an ancestor of the new target.
if !old_target_is_ancestor_of_new_target {
let event_target = DomRoot::from_ref(old_target.upcast::<Node>());
let moving_into = Some(DomRoot::from_ref(new_target.upcast::<Node>()));
self.handle_mouse_enter_leave_event(
client_point,
FireMouseEventType::Leave,
moving_into,
event_target,
pressed_mouse_buttons,
);
}
}
// Dispatch mouseover to new target - TODO: Redundant check?
@ -1453,12 +1471,24 @@ impl Document {
self.fire_mouse_event(
client_point,
&new_target.upcast(),
new_target.upcast(),
FireMouseEventType::Over,
EventBubbles::Bubbles,
EventCancelable::Cancelable,
pressed_mouse_buttons,
);
// TODO: Fire mouseenter here.
let moving_from = prev_mouse_over_target
.get()
.map(|old_target| DomRoot::from_ref(old_target.upcast::<Node>()));
let event_target = DomRoot::from_ref(new_target.upcast::<Node>());
self.handle_mouse_enter_leave_event(
client_point,
FireMouseEventType::Enter,
moving_from,
event_target,
pressed_mouse_buttons,
);
}
}
@ -1468,6 +1498,8 @@ impl Document {
client_point,
new_target.upcast(),
FireMouseEventType::Move,
EventBubbles::Bubbles,
EventCancelable::Cancelable,
pressed_mouse_buttons,
);
@ -1480,6 +1512,49 @@ impl Document {
}
}
fn handle_mouse_enter_leave_event(
&self,
client_point: Point2D<f32>,
event_type: FireMouseEventType,
related_target: Option<DomRoot<Node>>,
event_target: DomRoot<Node>,
pressed_mouse_buttons: u16,
) {
assert!(matches!(
event_type,
FireMouseEventType::Enter | FireMouseEventType::Leave
));
let common_ancestor = related_target.as_ref().map_or_else(
|| DomRoot::from_ref(&*event_target),
|related_target| event_target.common_ancestor(related_target, ShadowIncluding::No),
);
let mut targets = vec![];
let mut current = Some(event_target);
while let Some(node) = current {
if node == common_ancestor {
break;
}
current = node.GetParentNode();
targets.push(node);
}
if event_type == FireMouseEventType::Enter {
targets = targets.into_iter().rev().collect();
}
for target in targets {
self.fire_mouse_event(
client_point,
target.upcast(),
event_type,
EventBubbles::DoesNotBubble,
EventCancelable::NotCancelable,
pressed_mouse_buttons,
);
}
}
#[allow(unsafe_code)]
pub fn handle_wheel_event(
&self,