author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 16 Apr 2010 14:59:52 +0300 | |
changeset 15 | cf5481c2bc0b |
child 17 | 69946d1824c4 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: VideoCollectionWrapper class definition |
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* |
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*/ |
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#ifndef __VIDEOCOLLECTIONWRAPPER_H__ |
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#define __VIDEOCOLLECTIONWRAPPER_H__ |
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// INCLUDES |
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#include <QObject> |
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#include <qabstractitemmodel.h> |
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#include "videocollectionexport.h" |
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// FORWARD DECLARATIONS |
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class VideoCollectionWrapperPrivate; |
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class VideoSortFilterProxyModel; |
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/** |
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* Class is used as an interface of the video collection QT wrapper. |
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* |
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* Singleton instance is deleted when it's not used anymore by clients. At instantion time |
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* reference count is incremented. Client must call decreaseReferenceCount when it doesn't |
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* need the instance anymore. When reference count is 0 the instance is destroyed. |
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* |
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* * Usage: |
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* @code |
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* #include "videocollectionwrapper.h" |
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* #include "videosortfilterproxymodel.h" |
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* |
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* ... |
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* //// |
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* // Getting the instances |
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* //// |
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* VideoCollectionWrapper *wrapper = VideoCollectionWrapper::instance(); |
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* |
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* VideoSortFilterProxyModel *model = wrapper->getModel(); |
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* ... |
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* //// |
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* // Opening collection and start fetching video item data |
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* //// |
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* if(model) |
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* { |
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* mModel->open(VideoListWidget::ELevelVideos); |
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* } |
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* // see model documentation for the open funtionality |
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* |
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* ///// |
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* // Instance is not used anymore. |
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* // Wrapper owns the model, so client should not deallocate it |
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* ///// |
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* wrapper->decreaseReferenceCount(); |
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* wrapper = 0; // Don't use before new instantion. |
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* |
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* @endcode |
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* |
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*/ |
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class VIDEOCOLLECTION_DLL_EXPORT VideoCollectionWrapper : public QObject |
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{ |
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/** |
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* define to be able to use signals and slots |
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*/ |
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Q_OBJECT |
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|
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public: // Constructor |
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enum TModelType |
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{ |
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EAllVideos, |
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ECollections, |
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ECollectionContent, |
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EGeneric |
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}; |
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|
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/** |
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* Returns singleton instance for this class. |
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* |
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* WARNING! Not safe to call this from destructor of another function scope static object! |
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* |
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* @return The singleton instance. |
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*/ |
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static VideoCollectionWrapper &instance(); |
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/** |
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* Returns pointer to model |
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* |
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* @param type of the model |
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* |
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* @return address to model or NULL if fails. |
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*/ |
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VideoSortFilterProxyModel* getModel(int type); |
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/** |
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* Method can be used by client to emit status signal |
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* containing status code from particular async status. |
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* |
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* @param statusCode code of status |
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* |
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* @param additional additional information for the code |
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*/ |
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void sendAsyncStatus(int statusCode, QVariant &additional); |
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signals: |
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/** |
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* Signal that can be emitted by the wrapper to indicate status |
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* of some async operation. |
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* |
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* See videocollectioncommon.h for codes |
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* |
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* @param status code of status |
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* |
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* @param additional additional information for the code |
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*/ |
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void asyncStatus(int statusCode, QVariant &additional); |
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private: |
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/** |
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* Private contructor. |
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*/ |
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VideoCollectionWrapper(); |
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/** |
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* Private destructor. |
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* |
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*/ |
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virtual ~VideoCollectionWrapper(); |
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/** |
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* disables copy-constructor and assingment operator |
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*/ |
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Q_DISABLE_COPY(VideoCollectionWrapper) |
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private: |
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/** |
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* d -pointer for actual implementation |
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*/ |
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VideoCollectionWrapperPrivate *d; |
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/** |
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* Reference count. |
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*/ |
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int mReferenceCount; |
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}; |
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#endif // __VIDEOCOLLECTIONWRAPPER_H__ |
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// End of file |