stonewareslord/treestyletab
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git-svn-id: http://www.cozmixng.org/repos/piro/treestyletab/trunk@6907 599a83e7-65a4-db11-8015-0010dcdd6dc2
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piro 2010-07-07 02:11:57 +00:00
parent 67f3609048
commit 633a9ece95
1 changed files with 33 additions and 15 deletions
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48
modules/namespace.jsm
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@ -23,30 +23,48 @@ var EXPORTED_SYMBOLS = ['getNamespaceFor'];
const Cc = Components.classes;
const Ci = Components.interfaces;
const currentRevision = 1;
const currentRevision = 2;
const Application = '@mozilla.org/fuel/application;1' in Cc ?
Cc['@mozilla.org/fuel/application;1'].getService(Ci.fuelIApplication) :
'@mozilla.org/steel/application;1' in Cc ?
Cc['@mozilla.org/steel/application;1'].getService(Ci.steelIApplication) :
null ;
if (!Application)
throw new Error('there is no backend for shared namespaces!');
const QUERY = 'namespace.jsm[piro.sakura.ne.jp]:GetExistingNamespace';
const STORAGE_PROP = 'namespaces-storage';
const storage = Application.storage;
const ObserverService = Cc['@mozilla.org/observer-service;1']
.getService(Ci.nsIObserverService);
if (!storage.has('sharednamespaces@piro.sakura.ne.jp'))
storage.set('sharednamespaces@piro.sakura.ne.jp', {});
var bag = Cc['@mozilla.org/hash-property-bag;1']
.createInstance(Ci.nsIPropertyBag);
ObserverService.notifyObservers(bag, QUERY, null);
var namespaces = storage.get('sharednamespaces@piro.sakura.ne.jp', null);
var storage;
try {
storage = bag.getProperty(STORAGE_PROP);
}
catch(e) {
// This is the first provider of namespaces, so I create a new storage.
storage = {};
}
// Export the storage to other instances when they are loaded.
ObserverService.addObserver(
{
observe : function(aSubject, aTopic, aData)
{
if (aTopic != QUERY) return;
aSubject.QueryInterface(Ci.nsIWritablePropertyBag)
.setProperty(STORAGE_PROP, storage);
}
},
QUERY,
false
);
function getNamespaceFor(aName)
{
if (!aName)
throw new Error('you must specify the name of the namespace!');
if (!(aName in namespaces))
namespaces[aName] = {};
if (!(aName in storage))
storage[aName] = {};
return namespaces[aName];
return storage[aName];
}