author | William Roberts <williamr@symbian.org> |
Thu, 22 Jul 2010 16:32:33 +0100 | |
branch | GCC_SURGE |
changeset 44 | eff9df3d9c98 |
parent 41 | ea59c434026a |
child 45 | 612c4815aebe |
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: Music Player secondary collection abstract data model. This is |
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* primarily used to support Mediawall in Collection View. This |
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* model represents the list containing album songs. |
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* |
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*/ |
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|
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#include <hbnamespace.h> |
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#include "mpcollectiontbonelistdatamodel.h" |
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#include "mpmpxcollectiondata.h" |
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#include "mpplaybackdata.h" |
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#include "mptrace.h" |
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|
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/*! |
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\class MpCollectionTBoneListDataModel |
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\brief Music Player collection data model. |
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|
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Secondary collection data model implements the interface specified by |
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QAbstractListModel, which defines the standard interface that item models |
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must use to be able to interoperate with other components in the model/view |
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architecture. |
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|
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Every item of data that can be accessed via a model has an associated model |
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index. |
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|
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Each item has a number of data elements associated with it and they can be |
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retrieved by specifying a role (see Qt::ItemDataRole) to the model's data |
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returned by itemData() function. |
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|
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MpCollectionTBoneListDataModel is primarily used to support Mediawall in |
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Collection View. This model represents the list containing album songs. |
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\sa QAbstractListModel |
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*/ |
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/*! |
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\fn void albumDataChanged() |
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|
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This signal is specific to views with TBone. This signal is emitted when |
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there's a change in album data. This is an indication that the container |
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should re-fetch the album content. Currently, the only operation that can |
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trigger this is the delete operation. |
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*/ |
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/*! |
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\fn void albumDataAvailable() |
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This signal is specific to views with TBone. This signal is emitted when |
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a new data set is available for the list section of the TBone. This is |
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triggered as a result of container re-fetching the album content. |
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\sa albumDataChanged |
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*/ |
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/*! |
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Constructs the collection data model. |
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*/ |
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MpCollectionTBoneListDataModel::MpCollectionTBoneListDataModel( MpMpxCollectionData *collectionData, |
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MpPlaybackData *playbackData, QObject *parent ) |
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: QAbstractListModel( parent ), |
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mCollectionData( collectionData ), |
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mPlaybackData( playbackData ), |
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mRowCount( 0 ), |
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mCurrentSongId( 0 ), |
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mPlaybackActive( false ) |
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{ |
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TX_ENTRY |
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connect( mCollectionData, SIGNAL(refreshAlbumSongs()), |
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this, SLOT(refreshModel()) ); |
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connect( mCollectionData, SIGNAL(albumDataChanged()), |
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this, SIGNAL(albumDataChanged()) ); |
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if ( mPlaybackData ) { |
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connect( mPlaybackData, SIGNAL(playbackInfoChanged()), |
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this, SLOT(updateSong())); |
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connect( mPlaybackData, SIGNAL(playbackStateChanged()), |
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this, SLOT(updatePlaybackState())); |
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mPlaybackActive = mPlaybackData->playbackState() != MpPlaybackData::NotPlaying; |
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} |
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TX_EXIT |
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} |
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/*! |
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Destructs the collection data model. |
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*/ |
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MpCollectionTBoneListDataModel::~MpCollectionTBoneListDataModel() |
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{ |
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103 |
TX_LOG |
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} |
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|
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/*! |
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Returns the number of rows under the given \a parent. |
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108 |
|
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\reimp |
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*/ |
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int MpCollectionTBoneListDataModel::rowCount( const QModelIndex &parent ) const |
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{ |
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TX_LOG |
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Q_UNUSED(parent); |
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return mRowCount; |
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} |
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|
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/*! |
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Returns the data stored for the item referred to by the \a index. |
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|
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\reimp |
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*/ |
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QVariant MpCollectionTBoneListDataModel::data(const QModelIndex &index, int role) const |
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{ |
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TX_ENTRY |
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QVariant returnValue = QVariant(); |
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if ( !index.isValid() ) { |
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return returnValue; |
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} |
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|
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int row = index.row(); |
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TX_LOG_ARGS("index=" << row << ", role=" << role); |
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if ( role == Qt::DisplayRole ) { |
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// Fetch the primary text, which is the title, if available. |
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QString songTitle = mCollectionData->albumSongData(row, MpMpxCollectionData::Title); |
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if ( !songTitle.isEmpty() ) { |
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returnValue = songTitle; |
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} |
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else { |
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returnValue = hbTrId("txt_mus_other_unknown4"); |
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} |
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} |
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else if ( role == Qt::DecorationRole ) { |
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if ( mPlaybackActive |
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&& mPlaybackData->id() == mCollectionData->albumSongId( row ) ) { |
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QList<QVariant> iconList; |
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iconList << QVariant(); //primary icon is not used. |
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|
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iconList << HbIcon("qtg_small_speaker"); |
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returnValue = iconList; |
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} |
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} |
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TX_EXIT |
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return returnValue; |
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} |
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|
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/*! |
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Slot to be called when data has changed and model needs to be refreshed |
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to reflect the new data. |
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*/ |
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void MpCollectionTBoneListDataModel::refreshModel() |
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{ |
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TX_ENTRY |
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mRowCount = mCollectionData->albumSongsCount(); |
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reset(); |
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emit albumDataAvailable(); |
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TX_EXIT |
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} |
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169 |
|
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/*! |
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Slot to be called when playing song status has changed. |
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*/ |
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void MpCollectionTBoneListDataModel::updateSong() |
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{ |
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TX_ENTRY |
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int newSongId = mPlaybackData->id(); |
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|
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if ( mCurrentSongId && newSongId != mCurrentSongId) { |
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//Attempt to remove old song icon. |
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QModelIndex oldSongIndex; |
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oldSongIndex = index( mCollectionData->albumSongIndex( mCurrentSongId ) ); |
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if ( oldSongIndex.isValid() ) { |
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emit dataChanged( oldSongIndex, oldSongIndex ); |
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} |
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} |
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|
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//Attempt to update current song data and state. |
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QModelIndex songIndex; |
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songIndex = index( mCollectionData->albumSongIndex( newSongId ) ); |
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if ( songIndex.isValid() ) { |
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emit dataChanged( songIndex, songIndex ); |
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} |
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mCurrentSongId = newSongId; |
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TX_EXIT |
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} |
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196 |
|
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/*! |
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Slot to be called when playback state has changed. |
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*/ |
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void MpCollectionTBoneListDataModel::updatePlaybackState() |
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{ |
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//This logic is to account for when song plays the very first time, we get |
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//media before playback is active. |
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bool playbackWasActive = mPlaybackActive; |
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mPlaybackActive = mPlaybackData->playbackState() != MpPlaybackData::NotPlaying; |
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if ( mPlaybackActive && !playbackWasActive ) { |
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updateSong(); |
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} |
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} |
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//EOF |
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