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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of QtSystemTest.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
// create a factory and make that singleton
var ItemFactory = function() {
/// FIXME: itemshandlers can be resitered or unregistered at run time
/// so, the keyForObject.cache would get invalidated
var Factory = ComponentCacher.extend(function() {
this._super();
this.setFallbackToDefault(false);
var _handlerForItemCache = {};
function keyForObject(obj, application) {
var key = obj._type_;
function handlerExists(k) {
if ( this.fileForKey(k) !== null ) {
handlerExists.key = k;
return true;
}
return false;
}
// perfect match
if ( handlerExists.call(this, key) ) {
return key;
}
if ( key in _handlerForItemCache) {
return _handlerForItemCache[key];
}
var tree = application.__inheritanceTree(obj);
tree.shift();
var ret = tree.some(handlerExists, this)
? handlerExists.key
: null;
_handlerForItemCache[key] = ret;
return ret;
}
function itemForKey(obj, props) {
if ( !('_type_' in obj ) ) {
throw new Qtt.Fail('Invalid object passed to handlerForObject: _type_ does not exist ', 2);
}
var key = keyForObject.call(this, obj, props.application);
if (key === null) {
throw new Qtt.Fail('Error finding a Item handler for: ' + obj._type_ , 2);
}
var component = this.componentForKey(key);
if (component === null) {
throw new Qtt.Fail('Error creating an Item handler for: ' + obj._type_ , 2);
}
return component;
}
function register(k, path) {
path = absolutePathOf(path);
this._super(k, path);
_handlerForItemCache = {};
}
function unregister(key) {
this._super(key);
_handlerForItemCache = {};
}
return {
handlerForObject: itemForKey,
register: register,
unregister: unregister
};
});
var singleton = new Factory();
singleton.register('QObject', '../qml/itemhandlers/QstObject.qml');
singleton.register('QWidget', '../qml/itemhandlers/QstWidget.qml');
return singleton;
}();
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