qcGears = {
	createStore : function() {
		if ( 'undefined' == typeof google || ! google.gears ) return;
		
		if ( 'undefined' == typeof localServer )
			localServer = google.gears.factory.create('beta.localserver');
			
		store = localServer.createManagedStore(this.storeName());
		store.manifestUrl = "/index.php/qcgears/manifest";
		store.checkForUpdate();
		this.message(3);
	},
	
	getPermission : function() {
		var perm = true;
		
		if ( 'undefined' != typeof google && google.gears ) {
			if ( ! google.gears.factory.hasPermission )
				perm = google.gears.factory.getPermission( 'eZ Publish', '/extension/qcgears/design/admin/images/qcgears.png' );
				
			if ( perm )
				try { this.createStore(); } catch(e) { this.message(); } // silence if cancelled
			else
				this.message(4);
		}
	},
	
	storeName : function() {
		var name = window.location.protocol + window.location.host;
		
		name = name.replace(/[\/\\:*"?<>|;,]+/g, '_'); // gears beta doesn't allow certain chars in the store name
		name = 'ez_' + name.substring(0, 60); // max length of name is 64 chars
		return name;
	},
	
	message : function(show) {
		var t = this, msg1 = t.I('gears-msg1'), msg2 = t.I('gears-msg2'), msg3 = t.I('gears-msg3'), msg4 = t.I('gears-msg4'), inst = t.I('gears-install'), enab = t.I('gears-enable'), num = t.I('gears-upd-number'), wait = t.I('gears-wait');

		if ( ! msg1 ) return;

		if ( 'undefined' != typeof google && google.gears ) {
			if ( show && show == 4 ) {
				msg1.style.display = msg2.style.display = msg3.style.display = inst.style.display = enab.style.display = 'none';
				msg4.style.display = 'block';
			} else if ( google.gears.factory.hasPermission ) {
				msg1.style.display = msg2.style.display = msg4.style.display = inst.style.display = enab.style.display = 'none';
				msg3.style.display = 'block';

				if ( 'undefined' == typeof store )
					t.createStore();

				store.oncomplete = function(){wait.innerHTML = (' ' + 'Update completed.');};
				store.onerror = function(){wait.innerHTML = (' ' + 'Error:' + ' ' + store.lastErrorMessage);};
				store.onprogress = function(e){if(num) num.innerHTML = (' ' + e.filesComplete + ' / ' + e.filesTotal);};
			} else {
				msg1.style.display = msg3.style.display = msg4.style.display = inst.style.display =  'none';
				msg2.style.display = 'block';
				enab.style.display = 'block';
				
			}
		}
	},
	
	I : function(id) {
		return document.getElementById(id);
	}
};