ResourceAction: new class for centralized functionality

Added new class ResourceAction which centralizes functionality of all
actions related to ResourceItems. This includes loading projects,
samples, presets, plugin-specific presets etc.

Using this new class we can avoid duplicate functionality in
ResourcePreviewer, ResourceBrowser, TrackContainerView, InstrumentTrack
etc.

Signed-off-by: Tobias Doerffel <tobias.doerffel@gmail.com>

include/ResourceAction.h

@@ -0,0 +1,71 @@
+/*
+ * ResourceAction.h - header file for ResourceAction
+ *
+ * Copyright (c) 2009 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ *
+ * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program (see COPYING); if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ */
+
+#ifndef _RESOURCE_ACTION_H
+#define _RESOURCE_ACTION_H
+
+class instrumentTrack;
+class trackContainer;
+class ResourceItem;
+
+
+class ResourceAction
+{
+public:
+	enum Actions
+	{
+		EditProperties,
+		LoadProject,
+		LoadInNewTrackSongEditor,
+		LoadInNewTrackBBEditor,
+		LoadInActiveInstrumentTrack,
+		DownloadIntoCollection,
+		UploadToWWW,
+		DeleteLocalResource,
+		ImportFile,
+		NumActions
+	} ;
+	typedef Actions Action;
+
+	ResourceAction( const ResourceItem * _item,
+				Action _action = NumActions ) :
+		m_action( _action ),
+		m_item( _item )
+	{
+	}
+
+	bool loadProject();
+	bool loadByPlugin( instrumentTrack * _target );
+	bool loadPreset( instrumentTrack * _target );
+	bool importProject( trackContainer * _target );
+
+
+private:
+	Action m_action;
+	const ResourceItem * m_item;
+
+} ;
+
+
+#endif

src/core/ResourceAction.cpp

@@ -0,0 +1,104 @@
+/*
+ * ResourceBrowser.cpp - implementation of ResourceBrowser
+ *
+ * Copyright (c) 2009 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ *
+ * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program (see COPYING); if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include "ResourceAction.h"
+#include "ResourceItem.h"
+#include "ResourceFileMapper.h"
+#include "import_filter.h"
+#include "instrument.h"
+#include "instrument_track.h"
+#include "main_window.h"
+#include "mmp.h"
+#include "song.h"
+
+
+
+bool ResourceAction::loadProject()
+{
+	if( engine::getMainWindow()->mayChangeProject() )
+	{
+		ResourceFileMapper mapper( m_item );
+		if( m_item->isLocalResource() )
+		{
+			engine::getSong()->loadProject( mapper.fileName() );
+		}
+		else
+		{
+			engine::getSong()->createNewProjectFromTemplate(
+						mapper.fileName() );
+		}
+		return true;
+	}
+	return false;
+}
+
+
+
+
+bool ResourceAction::loadByPlugin( instrumentTrack * _target )
+{
+	instrument * i = _target->getInstrument();
+	if( i == NULL ||
+		!i->getDescriptor()->supportsFileType(
+						m_item->nameExtension() ) )
+	{
+		i = _target->loadInstrument(
+			engine::pluginFileHandling()[m_item->nameExtension()] );
+	}
+	if( i )
+	{
+		i->loadResource( m_item );
+		return true;
+	}
+	return false;
+}
+
+
+
+
+bool ResourceAction::loadPreset( instrumentTrack * _target )
+{
+	multimediaProject mmp( m_item->fetchData() );
+	instrumentTrack::removeMidiPortNode( mmp );
+	_target->setSimpleSerializing();
+	_target->loadSettings( mmp.content().toElement() );
+
+	return true;
+}
+
+
+
+
+bool ResourceAction::importProject( trackContainer * _target )
+{
+	ResourceFileMapper mapper( m_item );
+	/*return*/ importFilter::import( mapper.fileName(), _target );
+	return true;
+}
+
+
+
+
+#include "moc_ResourceAction.cxx"
+