You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
152 lines
4.1 KiB
152 lines
4.1 KiB
/***************************************************************************
|
|
engineobserver.cpp - Observer pattern for engine
|
|
-------------------
|
|
begin : Mar 14 2003
|
|
copyright : (C) 2003 by Frederik Holljen
|
|
email : fh@ez.no
|
|
***************************************************************************/
|
|
|
|
/***************************************************************************
|
|
* *
|
|
* This program is free software; you can redistribute it and/or modify *
|
|
* it under the terms of the GNU General Public License as published by *
|
|
* the Free Software Foundation; either version 2 of the License, or *
|
|
* (at your option) any later version. *
|
|
* *
|
|
***************************************************************************/
|
|
|
|
#include "debug.h"
|
|
#include "collectiondb.h"
|
|
#include "engineobserver.h"
|
|
#include "metabundle.h"
|
|
#include "podcastbundle.h"
|
|
#include <tqptrlist.h>
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
/// CLASS EngineObserver
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
EngineObserver::EngineObserver()
|
|
: m_subject( 0 )
|
|
{}
|
|
|
|
EngineObserver::EngineObserver( EngineSubject *s )
|
|
: m_subject( s )
|
|
{
|
|
m_subject->attach( this );
|
|
}
|
|
|
|
EngineObserver::~EngineObserver()
|
|
{
|
|
if ( m_subject )
|
|
m_subject->detach( this );
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
/// CLASS EngineSubject
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
EngineSubject::EngineSubject()
|
|
: m_oldEngineState( Engine::Empty )
|
|
{}
|
|
|
|
EngineSubject::~EngineSubject()
|
|
{}
|
|
|
|
|
|
void EngineSubject::stateChangedNotify( Engine::State state )
|
|
{
|
|
DEBUG_BLOCK
|
|
|
|
TQPtrListIterator<EngineObserver> it( Observers );
|
|
EngineObserver *observer;
|
|
while( ( observer = it.current() ) != 0 )
|
|
{
|
|
++it;
|
|
observer->engineStateChanged( state, m_oldEngineState );
|
|
}
|
|
|
|
m_oldEngineState = state;
|
|
}
|
|
|
|
|
|
void EngineSubject::newMetaDataNotify( const MetaBundle &bundle, bool trackChanged )
|
|
{
|
|
DEBUG_BLOCK
|
|
|
|
TQPtrListIterator<EngineObserver> it( Observers );
|
|
EngineObserver *observer;
|
|
|
|
PodcastEpisodeBundle peb;
|
|
MetaBundle b( bundle );
|
|
if( CollectionDB::instance()->getPodcastEpisodeBundle( bundle.url(), &peb ) )
|
|
{
|
|
b.setPodcastBundle( peb );
|
|
}
|
|
|
|
while( ( observer = it.current() ) != 0 )
|
|
{
|
|
++it;
|
|
observer->engineNewMetaData( b, trackChanged );
|
|
}
|
|
}
|
|
|
|
|
|
void EngineSubject::trackEnded( int finalPosition, int trackLength, const TQString &reason )
|
|
{
|
|
for( TQPtrListIterator<EngineObserver> it( Observers ); *it; ++it )
|
|
(*it)->engineTrackEnded( finalPosition, trackLength, reason );
|
|
}
|
|
|
|
|
|
void EngineSubject::volumeChangedNotify( int percent )
|
|
{
|
|
TQPtrListIterator<EngineObserver> it( Observers );
|
|
EngineObserver *observer;
|
|
while( ( observer = it.current() ) != 0 )
|
|
{
|
|
++it;
|
|
observer->engineVolumeChanged( percent );
|
|
}
|
|
}
|
|
|
|
|
|
void EngineSubject::trackPositionChangedNotify( long position, bool userSeek )
|
|
{
|
|
TQPtrListIterator<EngineObserver> it( Observers );
|
|
EngineObserver *observer;
|
|
while( ( observer = it.current() ) != 0 )
|
|
{
|
|
++it;
|
|
observer->engineTrackPositionChanged( position, userSeek );
|
|
}
|
|
}
|
|
|
|
|
|
void EngineSubject::trackLengthChangedNotify( long length )
|
|
{
|
|
TQPtrListIterator<EngineObserver> it( Observers );
|
|
EngineObserver *observer;
|
|
while( ( observer = it.current() ) != 0 )
|
|
{
|
|
++it;
|
|
observer->engineTrackLengthChanged( length );
|
|
}
|
|
}
|
|
|
|
|
|
void EngineSubject::attach( EngineObserver *observer )
|
|
{
|
|
if( !observer || Observers.find( observer ) != -1 )
|
|
return;
|
|
Observers.append( observer );
|
|
}
|
|
|
|
|
|
void EngineSubject::detach( EngineObserver *observer )
|
|
{
|
|
if( Observers.find( observer ) != -1 ) Observers.remove();
|
|
}
|