Reuse code for open documents and open help pages panes

Change-Id: I4924e72e732eb447d2e581d60f5e4426f5ff7cb2
Reviewed-by: David Schulz <david.schulz@digia.com>

src/plugins/help/openpageswidget.h

@@ -30,28 +30,14 @@
 #ifndef OPENPAGESWIDGET_H
 #define OPENPAGESWIDGET_H
 
-#include <QStyledItemDelegate>
-#include <QTreeView>
+#include <coreplugin/opendocumentstreeview.h>
 
 namespace Help {
-    namespace Internal {
+namespace Internal {
 
 class OpenPagesModel;
 
-class OpenPagesDelegate : public QStyledItemDelegate
-{
-    Q_OBJECT
-
-public:
-    explicit OpenPagesDelegate(QObject *parent = 0);
-
-    void paint(QPainter *painter, const QStyleOptionViewItem &option,
-        const QModelIndex &index) const;
-
-    mutable QModelIndex pressedIndex;
-};
-
-class OpenPagesWidget : public QTreeView
+class OpenPagesWidget : public Core::OpenDocumentsTreeView
 {
     Q_OBJECT
 
@@ -70,15 +56,12 @@ signals:
 
 private slots:
     void contextMenuRequested(QPoint pos);
-    void handlePressed(const QModelIndex &index);
-    void handleClicked(const QModelIndex &index);
-
-private:
-    bool eventFilter(QObject *obj, QEvent *event);
+    void handleActivated(const QModelIndex &index);
+    void handleCloseActivated(const QModelIndex &index);
+    void updateCloseButtonVisibility();
 
 private:
     bool m_allowContextMenu;
-    OpenPagesDelegate *m_delegate;
 };
 
     } // namespace Internal