Move import functionality from Song to MainWindow

Move the functionality of the method Song::importProject into the
MainWindow as it mainly consists of GUI related actions.

Add a new method Song::setLoadOnLauch to ensure that the boolean
Song::m_loadOnLaunch is still set at the end of the import.

include/MainWindow.h

@@ -248,6 +248,7 @@ private slots:
 	void onToggleMetronome();
 	void onExportProject();
 	void onExportProjectTracks();
+	void onImportProject();
 
 
 signals:

include/Song.h

@@ -300,6 +300,8 @@ public:
 
 	void exportProjectMidi(QString const & exportFileName) const;
 
+	inline void setLoadOnLauch(bool value) { m_loadOnLaunch = value; }
+
 public slots:
 	void playSong();
 	void record();
@@ -309,8 +311,6 @@ public slots:
 	void togglePause();
 	void stop();
 
-	void importProject();
-
 	void startExport();
 	void stopExport();
 

src/core/Song.cpp

@@ -37,7 +37,6 @@
 #include "BBEditor.h"
 #include "BBTrack.h"
 #include "BBTrackContainer.h"
-#include "ConfigManager.h"
 #include "ControllerRackView.h"
 #include "ControllerConnection.h"
 #include "embed.h"
@@ -45,10 +44,8 @@
 #include "FxMixer.h"
 #include "FxMixerView.h"
 #include "GuiApplication.h"
-#include "ImportFilter.h"
 #include "ExportFilter.h"
 #include "MainWindow.h"
-#include "FileDialog.h"
 #include "Pattern.h"
 #include "PianoRoll.h"
 #include "ProjectJournal.h"
@@ -1239,28 +1236,6 @@ bool Song::guiSaveProjectAs( const QString & _file_name )
 
 
 
-void Song::importProject()
-{
-	FileDialog ofd( NULL, tr( "Import file" ),
-			ConfigManager::inst()->userProjectsDir(),
-			tr("MIDI sequences") +
-			" (*.mid *.midi *.rmi);;" +
-			tr("Hydrogen projects") +
-			" (*.h2song);;" +
-			tr("All file types") +
-			" (*.*)");
-
-	ofd.setFileMode( FileDialog::ExistingFiles );
-	if( ofd.exec () == QDialog::Accepted && !ofd.selectedFiles().isEmpty() )
-	{
-		ImportFilter::import( ofd.selectedFiles()[0], this );
-	}
-	m_loadOnLaunch = false;
-}
-
-
-
-
 void Song::saveControllerStates( QDomDocument & doc, QDomElement & element )
 {
 	// save settings of controllers

src/gui/MainWindow.cpp

@@ -50,6 +50,7 @@
 #include "FileDialog.h"
 #include "FxMixerView.h"
 #include "GuiApplication.h"
+#include "ImportFilter.h"
 #include "PianoRoll.h"
 #include "PluginBrowser.h"
 #include "PluginFactory.h"
@@ -309,8 +310,8 @@ void MainWindow::finalize()
 	project_menu->addSeparator();
 	project_menu->addAction( embed::getIconPixmap( "project_import" ),
 					tr( "Import..." ),
-					Engine::getSong(),
-					SLOT( importProject() ) );
+					this,
+					SLOT( onImportProject() ) );
 	project_menu->addAction( embed::getIconPixmap( "project_export" ),
 					tr( "E&xport..." ),
 					this,
@@ -1703,3 +1704,28 @@ void MainWindow::onExportProjectTracks()
 {
 	this->exportProject(true);
 }
+
+void MainWindow::onImportProject()
+{
+	Song * song = Engine::getSong();
+
+	if (song)
+	{
+		FileDialog ofd( nullptr, tr( "Import file" ),
+				ConfigManager::inst()->userProjectsDir(),
+				tr("MIDI sequences") +
+				" (*.mid *.midi *.rmi);;" +
+				tr("Hydrogen projects") +
+				" (*.h2song);;" +
+				tr("All file types") +
+				" (*.*)");
+
+		ofd.setFileMode( FileDialog::ExistingFiles );
+		if( ofd.exec () == QDialog::Accepted && !ofd.selectedFiles().isEmpty() )
+		{
+			ImportFilter::import( ofd.selectedFiles()[0], song );
+		}
+
+		song->setLoadOnLauch(false);
+	}
+}