ui: Added singleton QtContextMenu with global back and forward actions

* QtContextMenu holds default actions for back and forward * additional actions can be passed to extend the default menu * currently used in QtMainWindow and QtCodeArea * fixed crash on undo when only view actions happened since project load bug id = 108
2016-06-30 16:49:16 +02:00
parent 32f894422d
commit 4e18389d38
9 changed files with 181 additions and 20 deletions
@@ -0,0 +1,67 @@
+#include "qt/utility/QtContextMenu.h"
+
+#include <QMenu>
+#include <QContextMenuEvent>
+
+#include "utility/messaging/type/MessageRedo.h"
+#include "utility/messaging/type/MessageUndo.h"
+
+std::shared_ptr<QtContextMenu> QtContextMenu::s_instance;
+
+QtContextMenu* QtContextMenu::getInstance()
+{
+	if (!s_instance)
+	{
+		s_instance = std::make_shared<QtContextMenu>();
+	}
+
+	return s_instance.get();
+}
+
+QtContextMenu::QtContextMenu()
+{
+	m_undoAction = new QAction(tr("Back"), this);
+	m_undoAction->setStatusTip(tr("Go back to last active symbol"));
+	m_undoAction->setToolTip(tr("Go back to last active symbol"));
+	connect(m_undoAction, SIGNAL(triggered()), this, SLOT(undoActionTriggered()));
+
+	m_redoAction = new QAction(tr("Forward"), this);
+	m_redoAction->setStatusTip(tr("Go forward to next active symbol"));
+	m_redoAction->setToolTip(tr("Go forward to next active symbol"));
+	connect(m_redoAction, SIGNAL(triggered()), this, SLOT(redoActionTriggered()));
+}
+
+void QtContextMenu::showDefault(QContextMenuEvent* event, QWidget* origin)
+{
+	showExtended(event, origin, std::vector<QAction*>());
+}
+
+void QtContextMenu::showExtended(QContextMenuEvent* event, QWidget* origin, const std::vector<QAction*>& actions)
+{
+	QMenu menu(origin);
+
+	menu.addAction(m_undoAction);
+	menu.addAction(m_redoAction);
+
+	if (actions.size())
+	{
+		menu.addSeparator();
+
+		for (QAction* action : actions)
+		{
+			menu.addAction(action);
+		}
+	}
+
+	menu.exec(event->globalPos());
+}
+
+void QtContextMenu::undoActionTriggered()
+{
+	MessageUndo().dispatch();
+}
+
+void QtContextMenu::redoActionTriggered()
+{
+	MessageRedo().dispatch();
+}