ui: Added history of last active symbols to UI and menu (issue 151)

* holding down back or forward button shows list of current back-forward stack
* added narrow button between back and forward to show the list
* added History menu
* moved back and forward actions to History menu
* show chronological list of recently active symbols in History menu

bug id = 151

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src/lib_gui/qt/view/QtMainView.cpp

@@ -104,6 +104,16 @@ void QtMainView::updateRecentProjectMenu()
 	m_updateRecentProjectMenuFunctor();
 }
 
+void QtMainView::updateHistoryMenu(const std::vector<SearchMatch>& history)
+{
+	m_onQtThread(
+		[=]()
+		{
+			m_window->updateHistoryMenu(history);
+		}
+	);
+}
+
 void QtMainView::handleMessage(MessageForceEnterLicense* message)
 {
 	m_forceLicenseScreenFunctor(message->licenseExpired);

src/lib_gui/qt/view/QtMainView.h

@@ -49,6 +49,7 @@ public:
 	virtual void setTitle(const std::string& title);
 	virtual void activateWindow();
 	virtual void updateRecentProjectMenu();
+	virtual void updateHistoryMenu(const std::vector<SearchMatch>& history);
 
 private:
 	void handleMessage(MessageForceEnterLicense* message);

src/lib_gui/qt/view/QtUndoRedoView.cpp

@@ -1,17 +1,13 @@
 #include "qt/view/QtUndoRedoView.h"
 
+#include "utility/ResourcePaths.h"
 #include "qt/utility/utilityQt.h"
 
 #include "qt/view/QtMainView.h"
 #include "qt/view/QtViewWidgetWrapper.h"
 
-#include "utility/ResourcePaths.h"
-
 QtUndoRedoView::QtUndoRedoView(ViewLayout* viewLayout)
 	: UndoRedoView(viewLayout)
-	, m_refreshFunctor(std::bind(&QtUndoRedoView::doRefreshView, this))
-	, m_setRedoButtonEnabledFunctor(std::bind(&QtUndoRedoView::doSetRedoButtonEnabled, this, std::placeholders::_1))
-	, m_setUndoButtonEnabledFunctor(std::bind(&QtUndoRedoView::doSetUndoButtonEnabled, this, std::placeholders::_1))
 {
 	m_widget = new QtUndoRedo();
 	setStyleSheet();
@@ -32,36 +28,47 @@ void QtUndoRedoView::initView()
 
 void QtUndoRedoView::refreshView()
 {
-	m_refreshFunctor();
-}
-
-void QtUndoRedoView::setStyleSheet()
-{
-	m_widget->setStyleSheet(utility::getStyleSheet(ResourcePaths::getGuiPath().concat(FilePath("undoredo_view/undoredo_view.css"))).c_str());
-}
-
-void QtUndoRedoView::doRefreshView()
-{
-	setStyleSheet();
-	m_widget->refreshStyle();
-}
-
-void QtUndoRedoView::doSetRedoButtonEnabled(bool enabled)
-{
-    m_widget->setRedoButtonEnabled(enabled);
-}
-
-void QtUndoRedoView::doSetUndoButtonEnabled(bool enabled)
-{
-    m_widget->setUndoButtonEnabled(enabled);
+	m_onQtThread(
+		[=]()
+		{
+			setStyleSheet();
+			m_widget->refreshStyle();
+		}
+	);
 }
 
 void QtUndoRedoView::setRedoButtonEnabled(bool enabled)
 {
-    m_setRedoButtonEnabledFunctor(enabled);
+	m_onQtThread(
+		[=]()
+		{
+			m_widget->setRedoButtonEnabled(enabled);
+		}
+	);
 }
 
 void QtUndoRedoView::setUndoButtonEnabled(bool enabled)
 {
-    m_setUndoButtonEnabledFunctor(enabled);
+	m_onQtThread(
+		[=]()
+		{
+			m_widget->setUndoButtonEnabled(enabled);
+		}
+	);
+}
+
+void QtUndoRedoView::updateHistory(const std::vector<SearchMatch>& searchMatches, size_t currentIndex)
+{
+	m_onQtThread(
+		[=]()
+		{
+			m_widget->updateHistory(searchMatches, currentIndex);
+		}
+	);
+}
+
+void QtUndoRedoView::setStyleSheet()
+{
+	m_widget->setStyleSheet(utility::getStyleSheet(
+		ResourcePaths::getGuiPath().concat(FilePath("undoredo_view/undoredo_view.css"))).c_str());
 }

src/lib_gui/qt/view/QtUndoRedoView.h

@@ -23,18 +23,14 @@ public:
 	virtual void setRedoButtonEnabled(bool enabled);
 	virtual void setUndoButtonEnabled(bool enabled);
 
+	virtual void updateHistory(const std::vector<SearchMatch>& searchMatches, size_t currentIndex);
+
 private:
-	void doRefreshView();
-
-    void doSetRedoButtonEnabled(bool enabled);
-    void doSetUndoButtonEnabled(bool enabled);
-
-    QtThreadedFunctor<void> m_refreshFunctor;
-    QtThreadedFunctor<bool> m_setRedoButtonEnabledFunctor;
-    QtThreadedFunctor<bool> m_setUndoButtonEnabledFunctor;
-
 	void setStyleSheet();
+
+	QtThreadedLambdaFunctor m_onQtThread;
+
 	QtUndoRedo* m_widget;
 };
 
-#endif // !QT_UNDO_REDO_VIEW_H
+#endif // QT_UNDO_REDO_VIEW_H