more project management updates

app/widget/projectexplorer/projectexplorertreeview.h

@@ -0,0 +1,25 @@
+#ifndef PROJECTEXPLORERTREEVIEW_H
+#define PROJECTEXPLORERTREEVIEW_H
+
+#include <QTreeView>
+
+/**
+ * @brief The ProjectExplorerTreeView class
+ *
+ * A fairly simple subclass of QTreeView that provides a double clicked signal whether the index is valid or not
+ * (QAbstractItemView has a doubleClicked() signal but it's only emitted with a valid index).
+ */
+class ProjectExplorerTreeView : public QTreeView
+{
+  Q_OBJECT
+public:
+  ProjectExplorerTreeView(QWidget* parent);
+
+protected:
+  virtual void mouseDoubleClickEvent(QMouseEvent *event) override;
+
+signals:
+  void DoubleClickedView(const QModelIndex& index);
+};
+
+#endif // PROJECTEXPLORERTREEVIEW_H