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triggerEvent can now be called with additional arguments for the listeners - this means instead of getting news like 'hey, someone won the lottery' listeners now get news like 'hey, you won the lottery' - in addition, the triggerer gets back the return from the listener, so if a listener wants to say 'dont tell anyone else' the triggerer gets that message - thanks for the reviews (closes #1189)

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@5398 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
Tim Schaub
2007-12-13 17:30:52 +00:00
parent 0b39ae35ce
commit 3e652566e8
2 changed files with 67 additions and 13 deletions
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30
lib/OpenLayers/Events.js
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@@ -586,13 +586,18 @@ OpenLayers.Events = OpenLayers.Class({
/**
* APIMethod: triggerEvent
* Trigger a specified registered event
* Trigger a specified registered event.
*
* Parameters:
* type - {String}
* evt - {Event}
* evt - {Event}
* args - {Array} Optional array of arguments to call the listener with.
*
* Returns:
* {Boolean} The last listener return. If a listener returns false, the
* chain of listeners will stop getting called.
*/
triggerEvent: function (type, evt) {
triggerEvent: function (type, evt, args) {
// prep evt object with object & div references
if (evt == null) {
@@ -600,6 +605,12 @@ OpenLayers.Events = OpenLayers.Class({
}
evt.object = this.object;
evt.element = this.element;
if(!args) {
args = [evt];
} else {
args.unshift(evt);
}
// execute all callbacks registered for specified type
// get a clone of the listeners array to
@@ -607,17 +618,13 @@ OpenLayers.Events = OpenLayers.Class({
var listeners = (this.listeners[type]) ?
this.listeners[type].slice() : null;
if ((listeners != null) && (listeners.length > 0)) {
var continueChain;
for (var i = 0; i < listeners.length; i++) {
var callback = listeners[i];
var continueChain;
if (callback.obj != null) {
// use the 'call' method to bind the context to callback.obj
continueChain = callback.func.call(callback.obj, evt);
} else {
continueChain = callback.func(evt);
}
// bind the context to callback.obj
continueChain = callback.func.apply(callback.obj, args);
if ((continueChain != null) && (continueChain == false)) {
if ((continueChain != undefined) && (continueChain == false)) {
// if callback returns false, execute no more callbacks.
break;
}
@@ -627,6 +634,7 @@ OpenLayers.Events = OpenLayers.Class({
OpenLayers.Event.stop(evt, true);
}
}
return continueChain;
},
/**