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Some small changes for the sake of plugins.

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This commit is contained in:
Kris Maglione
2010-12-26 21:54:17 -05:00
parent 8c64d0ec44
commit 8a5eb69492
3 changed files with 40 additions and 15 deletions
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21
common/modules/util.jsm
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@@ -988,6 +988,27 @@ var Util = Module("Util", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference]),
}), true);
},
overlayObject: function (object, overrides) {
let original = Object.create(object);
overrides = update(Object.create(original), overrides);
for each (let k in Object.getOwnPropertyNames(overrides)) {
let orig, desc = Object.getOwnPropertyDescriptor(overrides, k);
if (desc.value instanceof Class.Property)
desc = desc.value.init(k) || desc.value;
for (let obj = object; obj && !orig; obj = Object.getPrototypeOf(obj))
if (orig = Object.getOwnPropertyDescriptor(obj, k))
Object.defineProperty(original, k, orig);
Object.defineProperty(object, k, desc);
}
return function unwrap() {
for each (let k in Object.getOwnPropertyNames(original))
Object.defineProperty(object, k, Object.getOwnPropertyDescriptor(original, k));
}
},
overlayWindow: function (url, fn) {
if (url instanceof Ci.nsIDOMWindow)
util._loadOverlay(url, fn);