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feat(events): support preventdefault

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Fixes #1039
Closes #1397
This commit is contained in:
Marc Laval
2015-04-16 18:03:15 +02:00
parent aabe83cf63
commit 883e1c1541
5 changed files with 61 additions and 9 deletions
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16
modules/angular2/src/core/compiler/view.js vendored
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@ -131,17 +131,17 @@ export class AppView {
}
// implementation of EventDispatcher#dispatchEvent
dispatchEvent(
elementIndex:number, eventName:string, locals:Map<string, any>
):void {
// returns false if preventDefault must be applied to the DOM event
dispatchEvent(elementIndex:number, eventName:string, locals:Map<string, any>): boolean {
// Most of the time the event will be fired only when the view is in the live document.
// However, in a rare circumstance the view might get dehydrated, in between the event
// queuing up and firing.
var allowDefaultBehavior = true;
if (this.hydrated()) {
var elBinder = this.proto.elementBinders[elementIndex];
if (isBlank(elBinder.hostListeners)) return;
if (isBlank(elBinder.hostListeners)) return allowDefaultBehavior;
var eventMap = elBinder.hostListeners[eventName];
if (isBlank(eventMap)) return;
if (isBlank(eventMap)) return allowDefaultBehavior;
MapWrapper.forEach(eventMap, (expr, directiveIndex) => {
var context;
if (directiveIndex === -1) {
@ -149,9 +149,13 @@ export class AppView {
} else {
context = this.elementInjectors[elementIndex].getDirectiveAtIndex(directiveIndex);
}
expr.eval(context, new Locals(this.locals, locals));
var result = expr.eval(context, new Locals(this.locals, locals));
if (isPresent(result)) {
allowDefaultBehavior = allowDefaultBehavior && result;
}
});
}
return allowDefaultBehavior;
}
}