Qt/Debugger: Implement "Watch" window

Source/Core/DolphinQt2/Debugger/WatchWidget.h

@@ -0,0 +1,51 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <QDockWidget>
+
+#include "Common/CommonTypes.h"
+
+class QAction;
+class QTableWidget;
+class QTableWidgetItem;
+class QToolBar;
+class QCloseEvent;
+
+class WatchWidget : public QDockWidget
+{
+  Q_OBJECT
+public:
+  explicit WatchWidget(QWidget* parent = nullptr);
+  ~WatchWidget();
+
+  void AddWatch(QString name, u32 addr);
+signals:
+  void RequestMemoryBreakpoint(u32 addr);
+
+protected:
+  void closeEvent(QCloseEvent*) override;
+
+private:
+  void CreateWidgets();
+  void ConnectWidgets();
+
+  void OnLoad();
+  void OnSave();
+
+  void Update();
+
+  void ShowContextMenu();
+  void OnItemChanged(QTableWidgetItem* item);
+  void DeleteWatch(int row);
+  void AddWatchBreakpoint(int row);
+
+  QAction* m_load;
+  QAction* m_save;
+  QToolBar* m_toolbar;
+  QTableWidget* m_table;
+
+  bool m_updating = false;
+};