1 files changed, 406 insertions, 0 deletions
diff --git a/noatun/library/pluginmodule.cpp b/noatun/library/pluginmodule.cpp
new file mode 100644
index 00000000..aec76e44
--- /dev/null
+++ b/noatun/library/pluginmodule.cpp
@@ -0,0 +1,406 @@
+// Copyright (c) 2000-2001 Charles Samuels <charles@kde.org>
+// Copyright (c) 2000-2001 Neil Stevens <multivac@fcmail.com>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIAB\ILITY, WHETHER IN
+// AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+#include <noatun/app.h>
+
+#include <kdebug.h>
+#include <kdialog.h>
+#include <kiconloader.h>
+#include <klocale.h>
+#include <kmessagebox.h>
+#include <qtabwidget.h>
+#include <qheader.h>
+#include <qlabel.h>
+#include <qlayout.h>
+
+#include "noatunlistview.h"
+#include "pluginmodule.h"
+
+#include <qwhatsthis.h>
+
+#include "common.h"
+
+PluginListItem::PluginListItem(const bool _exclusive, bool _checked, const NoatunLibraryInfo &_info, QListView *_parent)
+	: QCheckListItem(_parent, _info.name, CheckBox)
+	, mInfo(_info)
+	, silentStateChange(false)
+	, exclusive(_exclusive)
+{
+	setChecked(_checked);
+	if(_checked) static_cast<PluginListView *>(listView())->count++;
+}
+
+
+void PluginListItem::setChecked(bool b)
+{
+	silentStateChange = true;
+	setOn(b);
+	silentStateChange = false;
+}
+
+void PluginListItem::stateChange(bool b)
+{
+	if(!silentStateChange)
+		static_cast<PluginListView *>(listView())->stateChanged(this, b);
+}
+
+void PluginListItem::paintCell(QPainter *p, const QColorGroup &cg, int a, int b, int c)
+{
+	if(exclusive) myType = RadioButton;
+	QCheckListItem::paintCell(p, cg, a, b, c);
+	if(exclusive) myType = CheckBox;
+}
+
+PluginListView::PluginListView(unsigned _min, unsigned _max, QWidget *_parent, const char *_name)
+	: KListView(_parent, _name)
+	, hasMaximum(true)
+	, max(_max)
+	, min(_min <= _max ? _min : _max)
+	, count(0)
+{
+}
+
+PluginListView::PluginListView(unsigned _min, QWidget *_parent, const char *_name)
+	: KListView(_parent, _name)
+	, hasMaximum(false)
+	, min(_min)
+	, count(0)
+{
+}
+
+PluginListView::PluginListView(QWidget *_parent, const char *_name)
+	: KListView(_parent, _name)
+	, hasMaximum(false)
+	, min(0)
+	, count(0)
+{
+}
+
+void PluginListView::clear()
+{
+	count = 0;
+	KListView::clear();
+}
+
+void PluginListView::stateChanged(PluginListItem *item, bool b)
+{
+	if(b)
+	{
+		count++;
+		emit stateChange(item, b);
+
+		if(hasMaximum && count > max)
+		{
+			// Find a different one and turn it off
+
+			QListViewItem *cur = firstChild();
+			PluginListItem *curItem = dynamic_cast<PluginListItem *>(cur);
+
+			while(cur == item || !curItem || !curItem->isOn())
+			{
+				cur = cur->nextSibling();
+				curItem = dynamic_cast<PluginListItem *>(cur);
+			}
+
+			curItem->setOn(false);
+		}
+	}
+	else
+	{
+		if(count == min)
+		{
+			item->setChecked(true);
+		}
+		else
+		{
+			count--;
+			emit stateChange(item, b);
+		}
+	}
+}
+
+Plugins::Plugins(QObject *_parent)
+	: CModule(i18n("Plugins"), i18n("Select Your Plugins"), "gear", _parent)
+	, shown(false)
+{
+	(new QVBoxLayout(this))->setAutoAdd(true);
+	QTabWidget *tabControl = new QTabWidget(this,"tabControl");
+
+	QFrame *interfaceTab = new QFrame(tabControl);
+	(new QVBoxLayout(interfaceTab, KDialog::marginHint(), KDialog::spacingHint()))->setAutoAdd(true);
+	(void)new QLabel(i18n("<b>Select one or more interfaces to use:</b>"), interfaceTab);
+	// At least one interface is required
+	interfaceList = new PluginListView(1, interfaceTab);
+	interfaceList->addColumn(i18n("Name"));
+	interfaceList->addColumn(i18n("Description"));
+	interfaceList->addColumn(i18n("Author"));
+	interfaceList->addColumn(i18n("License"));
+	connect(interfaceList, SIGNAL(stateChange(PluginListItem *, bool)), this, SLOT(stateChange(PluginListItem *, bool)));
+	tabControl->addTab(interfaceTab, i18n("&Interfaces"));
+
+	QFrame *playlistTab = new QFrame(tabControl);
+	(new QVBoxLayout(playlistTab, KDialog::marginHint(), KDialog::spacingHint()))->setAutoAdd(true);
+	(void)new QLabel(i18n("<b>Select one playlist to use:</b>"), playlistTab);
+	// Exactly one playlist is required
+	playlistList = new PluginListView(1, 1, playlistTab);
+	playlistList->addColumn(i18n("Name"));
+	playlistList->addColumn(i18n("Description"));
+	playlistList->addColumn(i18n("Author"));
+	playlistList->addColumn(i18n("License"));
+	connect(playlistList, SIGNAL(stateChange(PluginListItem *, bool)), this, SLOT(stateChange(PluginListItem *, bool)));
+	tabControl->addTab(playlistTab, i18n("&Playlist"));
+
+	QFrame *visTab = new QFrame(tabControl);
+	(new QVBoxLayout(visTab, KDialog::marginHint(), KDialog::spacingHint()))->setAutoAdd(true);
+	(void)new QLabel(i18n("<b>Select any visualizations to use:</b>"), visTab);
+	visList = new PluginListView(0, visTab);
+	visList->addColumn(i18n("Name"));
+	visList->addColumn(i18n("Description"));
+	visList->addColumn(i18n("Author"));
+	visList->addColumn(i18n("License"));
+	connect(visList, SIGNAL(stateChange(PluginListItem *, bool)), this, SLOT(stateChange(PluginListItem *, bool)));
+	tabControl->addTab(visTab, i18n("&Visualizations"));
+
+	// Other plugins are not restricted
+	QFrame *otherTab = new QFrame(tabControl);
+	(new QVBoxLayout(otherTab, KDialog::marginHint(), KDialog::spacingHint()))->setAutoAdd(true);
+	(void)new QLabel(i18n("<b>Select any other plugins to use:</b>"), otherTab);
+	otherList = new PluginListView(0, otherTab);
+	otherList->addColumn(i18n("Name"));
+	otherList->addColumn(i18n("Description"));
+	otherList->addColumn(i18n("Author"));
+	otherList->addColumn(i18n("License"));
+	connect(otherList, SIGNAL(stateChange(PluginListItem *, bool)), this, SLOT(stateChange(PluginListItem *, bool)));
+	tabControl->addTab(otherTab, i18n("O&ther Plugins"));
+}
+
+void Plugins::reopen()
+{
+	playlistList->clear();
+	interfaceList->clear();
+	otherList->clear();
+	visList->clear();
+
+	QValueList<NoatunLibraryInfo> available = napp->libraryLoader()->available();
+	QValueList<NoatunLibraryInfo> loaded = napp->libraryLoader()->loaded();
+
+	for(QValueList<NoatunLibraryInfo>::Iterator i = available.begin(); i != available.end(); ++i)
+	{
+		PluginListView *parent;
+		bool exclusive = false;
+
+		if((*i).type == "userinterface")
+		{
+			parent = interfaceList;
+		}
+		else if((*i).type == "playlist")
+		{
+			parent = playlistList;
+			exclusive = true;
+		}
+		else if((*i).type == "sm" || (*i).type=="hidden")
+		{
+			parent = 0;
+		}
+		else if ((*i).type == "visualization")
+		{
+			parent = visList;
+		}
+		else
+		{
+			parent = otherList;
+		}
+
+		if(parent)
+		{
+			PluginListItem *item = new PluginListItem(exclusive, loaded.contains(*i), *i, parent);
+			item->setText(0, (*i).name);
+			item->setText(1, (*i).comment);
+			item->setText(2, (*i).author);
+			item->setText(3, (*i).license);
+		}
+	}
+}
+
+void Plugins::stateChange(PluginListItem *item, bool b)
+{
+	if(b)
+		addPlugin(item->info());
+	else
+		removePlugin(item->info());
+}
+
+void Plugins::addPlugin(const NoatunLibraryInfo &info)
+{
+	// Load any that this one depends upon
+	for(QStringList::ConstIterator i = info.require.begin(); i != info.require.end(); ++i)
+	{
+		NoatunLibraryInfo requiredInfo = napp->libraryLoader()->getInfo(*i);
+		PluginListItem *item = findItem(requiredInfo);
+		if(item) item->setOn(true);
+	}
+
+	if(mDeleted.contains(info.specfile))
+		mDeleted.remove(info.specfile);
+	else if(!mAdded.contains(info.specfile))
+		mAdded.append(info.specfile);
+}
+
+void Plugins::removePlugin(const NoatunLibraryInfo &info)
+{
+	LibraryLoader &loader = *(napp->libraryLoader());
+
+	// Here are the ones loaded
+	QValueList<NoatunLibraryInfo> loaded = napp->libraryLoader()->loaded();
+
+	// Add the ones marked for loading
+	for(QStringList::ConstIterator i = mAdded.begin(); i != mAdded.end(); ++i)
+		loaded.append(loader.getInfo(*i));
+
+	// Subtract the ones marked for removal
+	for(QStringList::ConstIterator i = mDeleted.begin(); i != mDeleted.end(); ++i)
+		loaded.remove(loader.getInfo(*i));
+
+	// If any depend on this plugin, mark them for removal (or remove them from mAdded)
+	for(QValueList<NoatunLibraryInfo>::Iterator i = loaded.begin(); i != loaded.end(); ++i)
+	{
+		for(QStringList::ConstIterator j = (*i).require.begin(); j != (*i).require.end(); ++j)
+		{
+			if(*j == info.specfile)
+			{
+				PluginListItem *item = findItem(*i);
+				if(item) item->setOn(false);
+			}
+		}
+	}
+
+	if (mAdded.contains(info.specfile))
+		mAdded.remove(info.specfile);
+	else if(!mDeleted.contains(info.specfile))
+		mDeleted.append(info.specfile);
+}
+
+PluginListItem *Plugins::findItem(const NoatunLibraryInfo &info) const
+{
+	for(QListViewItem *cur = otherList->firstChild(); cur != 0; cur = cur->itemBelow())
+	{
+		PluginListItem *item = dynamic_cast<PluginListItem *>(cur);
+		if(item && item->info() == info)
+			return item;
+	}
+
+	// visualizations
+	for(QListViewItem *cur = visList->firstChild(); cur != 0; cur = cur->itemBelow())
+	{
+		PluginListItem *item = dynamic_cast<PluginListItem *>(cur);
+		if(item && item->info() == info)
+			return item;
+	}
+
+	// If our only interface has a dependency removed, that's a double dose of trouble
+	// We may as well have this here for completeness, though
+	for(QListViewItem *cur = interfaceList->firstChild(); cur != 0; cur = cur->itemBelow())
+	{
+		PluginListItem *item = dynamic_cast<PluginListItem *>(cur);
+		if(item && item->info() == info)
+			return item;
+	}
+
+	// If a playlist is added or removed due to a dependency, we're doom-diddly-oomed
+	// We may as well have this here for completeness, though
+	for(QListViewItem *cur = playlistList->firstChild(); cur != 0; cur = cur->itemBelow())
+	{
+		PluginListItem *item = dynamic_cast<PluginListItem *>(cur);
+		if(item && item->info() == info)
+			return item;
+	}
+
+	return 0;
+}
+
+void Plugins::save()
+{
+	LibraryLoader &loader = *(napp->libraryLoader());
+
+	// Load the plugins the user added
+	//loader.loadAll(mAdded);
+
+	QString oldPlaylist, newPlaylist;
+
+	// first load all non playlist things
+	for (QStringList::Iterator i = mAdded.begin(); i != mAdded.end(); ++i)
+	{
+		NoatunLibraryInfo info = loader.getInfo(*i);
+		if(info.type != "playlist")
+			loader.loadAll(QStringList(*i));
+		else
+			newPlaylist = (*i);
+	}
+
+	// Remove the plugins the user removed
+	for (QStringList::Iterator i = mDeleted.begin(); i != mDeleted.end(); ++i)
+	{
+		NoatunLibraryInfo info = loader.getInfo(*i);
+		if(info.type != "playlist")
+			loader.remove(*i);
+		else
+			oldPlaylist = *i;
+	}
+
+	// Loading normal plugins works the other way round!
+	// If you unload a playlist it sets the global playlist pointer to NULL,
+	// that also means you cannot first load the new and then unload the old one.
+	if(!newPlaylist.isEmpty() && !oldPlaylist.isEmpty())
+	{
+		kdDebug(66666) << k_funcinfo << "Unloading " << oldPlaylist << endl;
+		loader.remove(oldPlaylist);
+		kdDebug(66666) << k_funcinfo << "Loading " << oldPlaylist << endl;
+		loader.loadAll(QStringList(newPlaylist));
+	}
+
+
+	// Round up the ones that weren't loaded right now, for saving in the configuration
+	QStringList specList(mAdded);
+
+	QValueList<NoatunLibraryInfo> loaded = loader.loaded();
+	for(QValueList<NoatunLibraryInfo>::Iterator i = loaded.begin(); i != loaded.end(); ++i)
+	{
+		if(!specList.contains((*i).specfile) && loader.isLoaded((*i).specfile))
+			specList += (*i).specfile;
+	}
+
+	// Now we actually save
+	loader.setModules(specList);
+
+	mDeleted.clear();
+	mAdded.clear();
+}
+
+void Plugins::showEvent(QShowEvent *e)
+{
+	if(!shown)
+	{
+		shown = true;
+		KMessageBox::information(this, i18n("<qt>Changing your playlist plugin will stop playback. Different playlists may use different methods of storing information, so after changing playlists you may have to recreate your playlist.</qt>"), QString::null, "Plugin warning");
+	}
+	CModule::showEvent(e);
+}
+
+#include "pluginmodule.moc"