Author: scottbw
Date: Fri Jan 27 21:42:19 2012
New Revision: 1236899
URL: http://svn.apache.org/viewvc?rev=1236899&view=rev
Log:
Implemented StorageEvents for the Widget Preferences object; this now passes
two of the three StorageEvent conformance tests (the other fails for a
completely different reason).
Note that Events are handled in a non-standard way in IE before version 9
(surprise!) and I haven't been able to test if the workaround actually works.
Modified:
incubator/wookie/trunk/WebContent/shared/js/wookie-wrapper.js
Modified: incubator/wookie/trunk/WebContent/shared/js/wookie-wrapper.js
URL:
http://svn.apache.org/viewvc/incubator/wookie/trunk/WebContent/shared/js/wookie-wrapper.js?rev=1236899&r1=1236898&r2=1236899&view=diff
==============================================================================
--- incubator/wookie/trunk/WebContent/shared/js/wookie-wrapper.js (original)
+++ incubator/wookie/trunk/WebContent/shared/js/wookie-wrapper.js Fri Jan 27
21:42:19 2012
@@ -119,6 +119,7 @@ var WidgetPreferences = new function Wid
// Make a preference object and set its properties
//
var pref = {};
+ var oldValue = null;
pref.dvalue = value;
pref.key = key;
pref.readOnly = false;
@@ -132,6 +133,7 @@ var WidgetPreferences = new function Wid
// If it does exist, check it isn't read-only
//
if (existing) {
+ oldValue = this.getItem(key);
if (existing["readOnly"] === true) {
window.DOMException.code =
DOMException.NO_MODIFICATION_ALLOWED_ERR;
throw (window.DOMException);
@@ -149,7 +151,7 @@ var WidgetPreferences = new function Wid
//
this.prefs[key] = pref;
widget.setPreferenceForKey(key, value);
-
+ this.__raiseEvent(key, value, oldValue);
//
// Recalculate the length of the preferences collection
//
@@ -162,17 +164,28 @@ var WidgetPreferences = new function Wid
* @param key the key of the tuple to remove
*/
this.removeItem = function (key) {
+ this.__removeItem(key, true);
+ };
+
+ /**
+ * Internal delete function
+ * @param key the key of the tuple to remove
+ * @param fireEvent boolean; true to fire Storage Event on remove
+ */
+ this.__removeItem = function(key, fireEvent){
var existing = (this.prefs[key]);
if (existing) {
if (existing["readOnly"] === true) {
window.DOMException.code =
DOMException.NO_MODIFICATION_ALLOWED_ERR;
throw (window.DOMException);
} else {
+ var oldValue = this.getItem(key);
delete this.prefs[key];
widget.setPreferenceForKey(key, null);
+ if (fireEvent) this.__raiseEvent(key, null, oldValue);
this.calcLength();
}
- }
+ }
};
/**
@@ -182,12 +195,43 @@ var WidgetPreferences = new function Wid
for (var key in this.prefs) {
try {
if(this.prefs[key]["readOnly"] === false)
- this.removeItem(key);
+ this.__removeItem(key, false);
} catch (e) {
// swallow errors, as this method must never throw them
according to spec.
}
}
+ this.__raiseEvent(null,null,null);
};
+
+ this.__raiseEvent = function(key, value, oldValue){
+ //
+ // Raise custom storage event
+ //
+ var evt;
+ if(document.createEvent){
+ evt = document.createEvent("Event");
+ } else { // IE before v 9
+ evt = document.createEventObject(window.event);
+ }
+ var evt = document.createEvent("Event");
+ evt.initEvent("storage", false,false);
+ evt.key = key;
+ evt.newValue = value;
+ evt.oldValue = oldValue;
+ evt.url = window.location;
+ evt.storageArea = widget.preferences;
+ //
+ // Dispatch to child frames
+ //
+ var frames = window.frames;
+ for (var i=0;i<frames.length;i++){
+ if(document.createEvent){
+ frames[i].dispatchEvent(evt);
+ } else { // IE before v 9
+ frames[i].fireEvent("storage", evt);
+ }
+ }
+ }
};
/**
