Add context menu for address book page (implements part 1 of issue #648)

src/qt/addressbookpage.h

@@ -12,6 +12,7 @@ QT_BEGIN_NAMESPACE
 class QTableView;
 class QItemSelection;
 class QSortFilterProxyModel;
+class QMenu;
 QT_END_NAMESPACE
 
 /** Widget that shows a list of sending or receiving addresses.
@@ -48,13 +49,23 @@ private:
     Tabs tab;
     QString returnValue;
     QSortFilterProxyModel *proxyModel;
+    QMenu *contextMenu;
+    QAction *deleteAction;
 
 private slots:
     void on_deleteButton_clicked();
     void on_newAddressButton_clicked();
+    /** Copy address of currently selected address entry to clipboard */
     void on_copyToClipboard_clicked();
     void selectionChanged();
     void on_showQRCode_clicked();
+    /** Spawn contextual menu (right mouse menu) for address book entry */
+    void contextualMenu(const QPoint &point);
+
+    /** Copy label of currently selected address entry to clipboard */
+    void onCopyLabelAction();
+    /** Edit currently selected address entry */
+    void onEditAction();
 };
 
 #endif // ADDRESSBOOKDIALOG_H