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Factor out a dispatch_to_listeners function from dispatch_event.

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This commit is contained in:
Ms2ger 2015-09-14 17:08:00 +02:00
parent 15717173ee
commit 76eea43c83
1 changed files with 27 additions and 23 deletions
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50
components/script/dom/eventdispatcher.rs
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@ -12,32 +12,12 @@ use dom::eventtarget::{EventTarget, ListenerPhase};
use dom::node::Node; use dom::node::Node;
use dom::virtualmethods::vtable_for; use dom::virtualmethods::vtable_for;
// See https://dom.spec.whatwg.org/#concept-event-dispatch for the full dispatch algorithm fn dispatch_to_listeners(event: &Event, target: &EventTarget, chain: &[&EventTarget]) {
pub fn dispatch_event(target: &EventTarget, pseudo_target: Option<&EventTarget>,
event: &Event) -> bool {
assert!(!event.dispatching());
assert!(event.initialized());
event.set_target(match pseudo_target {
Some(pseudo_target) => pseudo_target,
None => target.clone(),
});
event.set_dispatching(true);
//TODO: no chain if not participating in a tree
let mut chain: RootedVec<JS<EventTarget>> = RootedVec::new();
if let Some(target_node) = NodeCast::to_ref(target) {
for ancestor in target_node.ancestors() {
let ancestor_target = EventTargetCast::from_ref(ancestor.r());
chain.push(JS::from_ref(ancestor_target))
}
}
let type_ = event.Type(); let type_ = event.Type();
/* capturing */ /* capturing */
event.set_phase(EventPhase::Capturing); event.set_phase(EventPhase::Capturing);
for cur_target in chain.r().iter().rev() { for cur_target in chain.iter().rev() {
let stopped = match cur_target.get_listeners_for(&type_, ListenerPhase::Capturing) { let stopped = match cur_target.get_listeners_for(&type_, ListenerPhase::Capturing) {
Some(listeners) => { Some(listeners) => {
event.set_current_target(cur_target); event.set_current_target(cur_target);
@ -82,7 +62,7 @@ pub fn dispatch_event(target: &EventTarget, pseudo_target: Option<&EventTarget>,
if event.bubbles() && !event.stop_propagation() { if event.bubbles() && !event.stop_propagation() {
event.set_phase(EventPhase::Bubbling); event.set_phase(EventPhase::Bubbling);
for cur_target in chain.r() { for cur_target in chain {
let stopped = match cur_target.get_listeners_for(&type_, ListenerPhase::Bubbling) { let stopped = match cur_target.get_listeners_for(&type_, ListenerPhase::Bubbling) {
Some(listeners) => { Some(listeners) => {
event.set_current_target(cur_target); event.set_current_target(cur_target);
@ -104,6 +84,30 @@ pub fn dispatch_event(target: &EventTarget, pseudo_target: Option<&EventTarget>,
} }
} }
} }
}
// See https://dom.spec.whatwg.org/#concept-event-dispatch for the full dispatch algorithm
pub fn dispatch_event(target: &EventTarget, pseudo_target: Option<&EventTarget>,
event: &Event) -> bool {
assert!(!event.dispatching());
assert!(event.initialized());
event.set_target(match pseudo_target {
Some(pseudo_target) => pseudo_target,
None => target.clone(),
});
event.set_dispatching(true);
//TODO: no chain if not participating in a tree
let mut chain: RootedVec<JS<EventTarget>> = RootedVec::new();
if let Some(target_node) = NodeCast::to_ref(target) {
for ancestor in target_node.ancestors() {
let ancestor_target = EventTargetCast::from_ref(ancestor.r());
chain.push(JS::from_ref(ancestor_target))
}
}
dispatch_to_listeners(event, target, chain.r());
/* default action */ /* default action */
let target = event.GetTarget(); let target = event.GetTarget();