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Bug 981370 - Make MousePosTracker use a Set rather than manage an array itself. r=dao

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This commit is contained in:
Cameron McCormack 2014-03-11 10:05:29 +11:00
parent 49df72459f
commit 71af330624
1 changed files with 4 additions and 8 deletions
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12
browser/base/content/browser.js
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@ -7097,7 +7097,7 @@ XPCOMUtils.defineLazyGetter(window, "gShowPageResizers", function () {
});
var MousePosTracker = {
_listeners: [],
_listeners: new Set(),
_x: 0,
_y: 0,
get _windowUtils() {
@ -7106,21 +7106,17 @@ var MousePosTracker = {
},
addListener: function (listener) {
if (this._listeners.indexOf(listener) >= 0)
if (this._listeners.has(listener))
return;
listener._hover = false;
this._listeners.push(listener);
this._listeners.add(listener);
this._callListener(listener);
},
removeListener: function (listener) {
var index = this._listeners.indexOf(listener);
if (index < 0)
return;
this._listeners.splice(index, 1);
this._listeners.delete(listener);
},
handleEvent: function (event) {