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/***************************************************************************
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begin : Thu Aug 19 2004
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copyright : (C) 2002 - 2004 by Michael Pyne
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email : michael.pyne@kde.org
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include <kaction.h>
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#include <kapplication.h>
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#include <kdebug.h>
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#include "tracksequenceiterator.h"
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#include "playlist.h"
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#include "actioncollection.h"
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#include "tag.h"
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#include "filehandle.h"
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using namespace ActionCollection;
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TrackSequenceIterator::TrackSequenceIterator() :
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m_current(0)
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{
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}
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TrackSequenceIterator::TrackSequenceIterator(const TrackSequenceIterator &other) :
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m_current(other.m_current)
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{
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}
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TrackSequenceIterator::~TrackSequenceIterator()
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{
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}
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void TrackSequenceIterator::setCurrent(PlaylistItem *current)
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{
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m_current = current;
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}
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void TrackSequenceIterator::playlistChanged()
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{
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}
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void TrackSequenceIterator::itemAboutToDie(const PlaylistItem *)
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{
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}
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DefaultSequenceIterator::DefaultSequenceIterator() :
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TrackSequenceIterator()
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{
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}
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DefaultSequenceIterator::DefaultSequenceIterator(const DefaultSequenceIterator &other)
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: TrackSequenceIterator(other)
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{
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}
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DefaultSequenceIterator::~DefaultSequenceIterator()
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{
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}
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void DefaultSequenceIterator::advance()
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{
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if(!current())
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return;
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bool isRandom = action("randomPlay") && action<KToggleAction>("randomPlay")->isChecked();
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bool loop = action("loopPlaylist") && action<KToggleAction>("loopPlaylist")->isChecked();
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bool albumRandom = action("albumRandomPlay") && action<KToggleAction>("albumRandomPlay")->isChecked();
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if(isRandom || albumRandom) {
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if(m_randomItems.isEmpty() && loop) {
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// Since refillRandomList will remove the currently playing item,
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// we should clear it out first since that's not good for e.g.
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// lists with 1-2 items. We need to remember the Playlist though.
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Playlist *playlist = current()->playlist();
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setCurrent(0);
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refillRandomList(playlist);
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}
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if(m_randomItems.isEmpty()) {
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setCurrent(0);
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return;
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}
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PlaylistItem *item;
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if(albumRandom) {
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if(m_albumSearch.isNull() || m_albumSearch.matchedItems().isEmpty()) {
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item = m_randomItems[TDEApplication::random() % m_randomItems.count()];
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initAlbumSearch(item);
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}
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// This can be null if initAlbumSearch() left the m_albumSearch
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// empty because the album text was empty. Since we initAlbumSearch()
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// with an item, the matchedItems() should never be empty.
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if(!m_albumSearch.isNull()) {
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PlaylistItemList albumMatches = m_albumSearch.matchedItems();
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if(albumMatches.isEmpty()) {
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kdError(65432) << "Unable to initialize album random play.\n";
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kdError(65432) << "List of potential results is empty.\n";
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return; // item is still set to random song from a few lines earlier.
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}
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item = albumMatches[0];
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// Pick first song remaining in list.
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for(unsigned i = 0; i < albumMatches.count(); ++i)
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if(albumMatches[i]->file().tag()->track() < item->file().tag()->track())
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item = albumMatches[i];
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m_albumSearch.clearItem(item);
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if(m_albumSearch.matchedItems().isEmpty()) {
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m_albumSearch.clearComponents();
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m_albumSearch.search();
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}
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}
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else
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kdError(65432) << "Unable to perform album random play on " << *item << endl;
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}
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else
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item = m_randomItems[TDEApplication::random() % m_randomItems.count()];
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setCurrent(item);
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m_randomItems.remove(item);
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}
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else {
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PlaylistItem *next = current()->itemBelow();
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if(!next && loop) {
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Playlist *p = current()->playlist();
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next = p->firstChild();
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while(next && !next->isVisible())
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next = static_cast<PlaylistItem *>(next->nextSibling());
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}
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setCurrent(next);
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}
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}
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void DefaultSequenceIterator::backup()
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{
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if(!current())
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return;
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PlaylistItem *item = current()->itemAbove();
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if(item)
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setCurrent(item);
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}
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void DefaultSequenceIterator::prepareToPlay(Playlist *playlist)
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{
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bool random = action("randomPlay") && action<KToggleAction>("randomPlay")->isChecked();
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bool albumRandom = action("albumRandomPlay") && action<KToggleAction>("albumRandomPlay")->isChecked();
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if(random || albumRandom) {
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PlaylistItemList items = playlist->selectedItems();
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if(items.isEmpty())
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items = playlist->visibleItems();
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PlaylistItem *newItem = 0;
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if(!items.isEmpty())
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newItem = items[TDEApplication::random() % items.count()];
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setCurrent(newItem);
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refillRandomList();
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}
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else {
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TQListViewItemIterator it(playlist, TQListViewItemIterator::Visible | TQListViewItemIterator::Selected);
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if(!it.current())
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it = TQListViewItemIterator(playlist, TQListViewItemIterator::Visible);
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setCurrent(static_cast<PlaylistItem *>(it.current()));
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}
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}
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void DefaultSequenceIterator::reset()
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{
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m_randomItems.clear();
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m_albumSearch.clearComponents();
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m_albumSearch.search();
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setCurrent(0);
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}
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void DefaultSequenceIterator::playlistChanged()
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{
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refillRandomList();
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}
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void DefaultSequenceIterator::itemAboutToDie(const PlaylistItem *item)
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{
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PlaylistItem *stfu_gcc = const_cast<PlaylistItem *>(item);
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m_randomItems.remove(stfu_gcc);
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}
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void DefaultSequenceIterator::setCurrent(PlaylistItem *current)
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{
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PlaylistItem *oldCurrent = DefaultSequenceIterator::current();
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TrackSequenceIterator::setCurrent(current);
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bool random = action("randomPlay") && action<KToggleAction>("randomPlay")->isChecked();
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bool albumRandom = action("albumRandomPlay") && action<KToggleAction>("albumRandomPlay")->isChecked();
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if((albumRandom || random) && current && m_randomItems.isEmpty()) {
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// We're setting a current item, refill the random list now, and remove
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// the current item.
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refillRandomList();
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}
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m_randomItems.remove(current);
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if(albumRandom && current && !oldCurrent) {
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// Same idea as above
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initAlbumSearch(current);
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m_albumSearch.clearItem(current);
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}
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}
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DefaultSequenceIterator *DefaultSequenceIterator::clone() const
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{
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return new DefaultSequenceIterator(*this);
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}
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void DefaultSequenceIterator::refillRandomList(Playlist *p)
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{
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if(!p) {
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if (!current())
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return;
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p = current()->playlist();
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if(!p) {
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kdError(65432) << k_funcinfo << "Item has no playlist!\n";
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return;
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}
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}
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m_randomItems = p->visibleItems();
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m_randomItems.remove(current());
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m_albumSearch.clearComponents();
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m_albumSearch.search();
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}
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void DefaultSequenceIterator::initAlbumSearch(PlaylistItem *searchItem)
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{
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if(!searchItem)
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return;
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m_albumSearch.clearPlaylists();
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m_albumSearch.addPlaylist(searchItem->playlist());
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ColumnList columns;
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m_albumSearch.setSearchMode(PlaylistSearch::MatchAll);
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m_albumSearch.clearComponents();
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// If the album name is empty, it will mess up the search,
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// so ignore empty album names.
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if(searchItem->file().tag()->album().isEmpty())
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return;
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columns.append(PlaylistItem::AlbumColumn);
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m_albumSearch.addComponent(PlaylistSearch::Component(
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searchItem->file().tag()->album(),
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true,
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columns,
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PlaylistSearch::Component::Exact)
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);
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// If there is an Artist tag with the track, match against it as well
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// to avoid things like multiple "Greatest Hits" albums matching the
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// search.
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if(!searchItem->file().tag()->artist().isEmpty()) {
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kdDebug(65432) << "Searching both artist and album.\n";
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columns[0] = PlaylistItem::ArtistColumn;
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m_albumSearch.addComponent(PlaylistSearch::Component(
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searchItem->file().tag()->artist(),
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true,
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columns,
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PlaylistSearch::Component::Exact)
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);
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}
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m_albumSearch.search();
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}
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// vim: set et sw=4 tw=0:
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