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Diffstat (limited to 'src/interpreter/imports/qtsystemtest/scripts/ItemFactory.js')
-rw-r--r-- | src/interpreter/imports/qtsystemtest/scripts/ItemFactory.js | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/src/interpreter/imports/qtsystemtest/scripts/ItemFactory.js b/src/interpreter/imports/qtsystemtest/scripts/ItemFactory.js new file mode 100644 index 0000000..93c2a2f --- /dev/null +++ b/src/interpreter/imports/qtsystemtest/scripts/ItemFactory.js @@ -0,0 +1,117 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of QtSystemTest. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** 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, Nokia gives you certain additional +** rights. These rights are described in the Nokia 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. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +// 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; +}(); |