Keyboard shortcuts to preview/add sounds from sidebar

include/FileBrowser.h

@@ -63,9 +63,9 @@ class FileBrowser : public SideBarWidget
 
 private slots:
 	void reloadTree( void );
-	void expandItems( QTreeWidgetItem * item=NULL, QList<QString> expandedDirs = QList<QString>() );
+	void expandItems( QTreeWidgetItem * item=nullptr, QList<QString> expandedDirs = QList<QString>() );
 	// call with item=NULL to filter the entire tree
-	bool filterItems( const QString & filter, QTreeWidgetItem * item=NULL );
+	bool filterItems( const QString & filter, QTreeWidgetItem * item=nullptr );
 	void giveFocusToFilter();
 
 private:
@@ -108,26 +108,36 @@ class FileBrowserTreeWidget : public QTreeWidget
 
 
 private:
+	//! Start a preview of a file item
+	void previewFileItem(FileItem* file);
+	//! If a preview is playing, stop it. Returns false if nothing was playing
+	bool stopPreview();
+
+	void keyPressEvent( QKeyEvent * ke ) override;
+	void keyReleaseEvent( QKeyEvent * ke ) override;
+	void hideEvent( QHideEvent * he ) override;
+
 	void handleFile( FileItem * fi, InstrumentTrack * it );
-	void openInNewInstrumentTrack( TrackContainer* tc );
+	void openInNewInstrumentTrack( TrackContainer* tc, FileItem* item );
 
 
 	bool m_mousePressed;
 	QPoint m_pressPos;
 
+	//! This should only be accessed or modified when m_pphMutex is held
 	PlayHandle* m_previewPlayHandle;
 	QMutex m_pphMutex;
 
-	FileItem * m_contextMenuItem;
+	QList<QAction*> getContextActions(FileItem* item, bool songEditor);
 
 
 private slots:
 	void activateListItem( QTreeWidgetItem * item, int column );
-	void openInNewInstrumentTrackBBE( void );
-	void openInNewInstrumentTrackSE( void );
-	void sendToActiveInstrumentTrack( void );
+	void openInNewInstrumentTrack( FileItem* item, bool songEditor );
+	bool openInNewSampleTrack( FileItem* item );
+	void sendToActiveInstrumentTrack( FileItem* item );
 	void updateDirectory( QTreeWidgetItem * item );
-	void openContainingFolder();
+	void openContainingFolder( FileItem* item );
 
 } ;
 
@@ -234,6 +244,11 @@ class FileItem : public QTreeWidgetItem
 		return( m_handling );
 	}
 
+	inline bool isTrack( void ) const
+	{
+		return m_handling == LoadAsPreset || m_handling == LoadByPlugin;
+	}
+
 	QString extension( void );
 	static QString extension( const QString & file );