author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 31 Aug 2010 15:15:55 +0300 | |
branch | RCL_3 |
changeset 56 | 839377eedc2b |
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: VideoListDataModel class definition* |
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*/ |
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#ifndef __VIDEOLISTDATAMODEL_H__ |
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#define __VIDEOLISTDATAMODEL_H__ |
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// INCLUDES |
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#include <QObject> |
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#include <qabstractitemmodel.h> |
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#include <e32const.h> |
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#include <mpxitemid.h> |
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// FORWARD DECLARATIONS |
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class VideoListDataModelPrivate; |
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class VideoThumbnailData; |
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class VideoCollectionClient; |
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class VideoDeleteWorker; |
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class VideoListDataModel : public QAbstractItemModel |
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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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* disable copy-constructor and assignment operator |
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*/ |
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Q_DISABLE_COPY(VideoListDataModel) |
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/** |
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* private class declaration macro |
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*/ |
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Q_DECLARE_PRIVATE_D( d_ptr, VideoListDataModel ) |
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public: |
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/** |
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* Default constructor |
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*/ |
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VideoListDataModel(QObject *parent = 0); |
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/** |
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* Destructor |
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*/ |
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~VideoListDataModel(); |
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/** |
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* Initializes model. Sets model cache proxy and cache's plugin to |
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* to be this object. Creates videolist and puts it to observe |
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* collection client. Calls connectSignals to connect signals into |
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* appropriate slots |
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* |
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* |
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* @return int: 0 if everything ok |
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*/ |
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int initialize( ); |
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/** |
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* returns collectionclient object |
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* |
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* @return VideoCollectionClient* |
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*/ |
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VideoCollectionClient* getCollectionClient(); |
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/** |
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* Method calls video list data to check if there are valid media object |
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* at the given index. If there is, item id is returned. |
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* |
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* @param index index of the item to be opened |
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* @return TMPXItemId item id or TMPXItemId::Invalid() if no valid item. |
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*/ |
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const TMPXItemId& mediaIdAtIndex(const int &index) const; |
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/** |
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* returns model index of id provided |
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* |
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* @param id of the item |
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* @return modelIndex |
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*/ |
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QModelIndex indexOfId(const TMPXItemId &id); |
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/** |
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* Method calls video list data to check if there are valid media object |
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* for the given media id. If there is, file path for is returned. |
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* |
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* @param mediaId id of the item to be opened |
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* @return QString file path of the media at index, empty string if not valid item. |
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*/ |
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QString mediaFilePathForId(const TMPXItemId &mediaId) const; |
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/** |
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* Called by the client when removal of videos are requested. |
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* Sets video status to be removed to videolistdata and |
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* eventually calls collection to handle the actual removing. |
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* |
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* @param indexlist list of indeces of items requested for deletion |
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* |
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* @return bool true if removal startup succeeds |
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*/ |
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bool removeRows(const QModelIndexList &indexList); |
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/** |
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* Checks if the specified item belongs to currently open album. |
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* |
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* @param albumId, Album to be checked. If zero, using the currently open album. |
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* @param itemId, Item to be checked. |
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* @return true if item belongs to the album. |
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*/ |
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bool belongsToAlbum(const TMPXItemId &itemId, TMPXItemId albumId = TMPXItemId::InvalidId()) const; |
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/** |
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* Set album in use. |
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* |
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* @param albumId, Album to set in use. |
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* @return None. |
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*/ |
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void setAlbumInUse(const TMPXItemId &albumId); |
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/** |
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* returns album id currently in use |
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* |
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* @return TMPXItemId |
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*/ |
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const TMPXItemId& albumInUse() const; |
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|
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/** |
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* removes provided items from provided album id and calls |
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* collectionclient to update mds as well. |
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* |
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* @param albumId album from where to remove |
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* @param items items to remove |
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* |
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* @return count of items removed or -1 if failed |
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*/ |
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int removeItemsFromAlbum(const TMPXItemId &albumId, const QList<TMPXItemId> &items); |
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|
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public: // from QAbstractItemModel |
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|
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/** |
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* Returns video item count to the proxy cache |
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* |
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* @param parent, parent's index, not used |
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* |
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* @return int count of items |
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*/ |
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int rowCount(const QModelIndex &parent = QModelIndex()) const; |
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|
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/** |
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* Returns video item data from index pointed by |
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* given QModelIndex's row index: |
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* - video name |
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* - video detail row |
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* - video thumbnail |
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* |
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* If fetch more is setted for given index tries to append |
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* additional details into map as well. |
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* |
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* @param index, index of the item data is requested |
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* |
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* @return QMap<int, QVariant> item data |
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*/ |
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QMap<int, QVariant> itemData(const QModelIndex &index) const; |
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|
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/** |
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* data |
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*/ |
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QVariant data(const QModelIndex & index, int role = Qt::DisplayRole) const; |
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|
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/** |
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* columnCount |
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*/ |
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int columnCount(const QModelIndex & parent = QModelIndex()) const; |
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|
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/** |
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* index |
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*/ |
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QModelIndex index(int row, int column, const QModelIndex & parent = QModelIndex()) const; |
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|
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/** |
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* Parent |
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*/ |
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QModelIndex parent(const QModelIndex & index) const; |
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|
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signals: |
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|
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/** |
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* This signal is connected to video list's details ready |
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* -signal indicating that video details data is fetched |
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* and provides a QMap of the details'. |
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*/ |
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void fullVideoDetailsReady(QVariant &); |
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|
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/** |
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* This signal is connected to proxy models short details ready |
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* -signal indicating that video details data fetching started ok |
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* |
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* @param id of the video item |
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*/ |
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void shortDetailsReady(TMPXItemId id); |
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/** |
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* Signals that the model is ready, ie. loaded all data from |
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* myvideocollection. |
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*/ |
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void modelReady(); |
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/** |
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* Signals that all albums have been loaded from myvideoscollection. |
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*/ |
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void albumListReady(); |
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/** |
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* Signal to be emitted when something has happened in the |
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* model's data container |
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*/ |
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void modelChanged(); |
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/** |
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* Signals that album content has been updated. |
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*/ |
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void albumChanged(); |
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private slots: |
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/** |
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* signaled by the deleteworker in case some delete startup fails |
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* |
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* @param ids list of ids whose deletion fails |
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*/ |
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void deleteStartingFailsSlot(QList<TMPXItemId>& ids); |
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private: |
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/** |
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* Method connects signals used for delete worker |
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*/ |
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void connectSignals(); |
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/** |
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* method disconnects signals |
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*/ |
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void disconnectSignals(); |
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/** |
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* Generates a detail row string for the video item |
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* at the given index. |
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* |
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* In case item is not found in the provided index, empty |
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* string is returned. |
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* |
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* @param index, index of the item data is requested |
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* |
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* @return QString detail string |
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*/ |
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QString prepareDetailRow(int &index) const; |
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/** |
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* Formats a detail row string for the video item |
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* at the given index. |
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* |
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* In case item is not found in the provided index, empty |
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* string is returned. |
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* |
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* @param index, index of the item data is requested |
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* @param duration, duration of the video |
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* |
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* @return QString detail string |
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*/ |
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QString doDetailRow(int &index) const; |
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/** |
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* Generates a video count string for category or album at given index. |
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* |
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* In case item is not found in the provided index, empty |
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* string is returned. |
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* |
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* @param index, index of the item data is requested |
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* @param index, item id of the item data is requested |
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* |
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* @return QString video count string |
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*/ |
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QString prepareVideoCountString(int &index) const; |
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|
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/** |
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* Generates a video size string from video item at given index |
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* |
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* In case item is not found in the provided index, empty |
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* string is returned. |
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* |
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* @param index, index of the item data is requested |
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* |
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* @return QString size string |
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*/ |
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QString prepareSizeString(int &index) const; |
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/** |
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* Called when there are status changes in some async operation |
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* |
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* @param statusCode status of operation |
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* @data data from operation |
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*/ |
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void reportAsyncStatus(int statusCode, QVariant &additional); |
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|
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private: |
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/** |
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* Private implementation Contains the actual video data and |
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* video array. Own. |
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*/ |
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VideoListDataModelPrivate* const d_ptr; |
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/** |
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* Pointer to collection client. Used to send commands to collection. |
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* Owned. |
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*/ |
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VideoCollectionClient *mCollectionClient; |
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/** |
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* object for handling item deletion conveniently in small blocks. |
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* Own |
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*/ |
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VideoDeleteWorker *mDeleteWorker; |
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/** |
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* initialized flag |
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*/ |
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bool mInitialized; |
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}; |
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#endif // __VIDEOLISTDATAMODEL_H__ |
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// End of file |
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