File indexing completed on 2025-01-05 04:55:50

 /*
     ui/treeview.h
 
     This file is part of libkleopatra
     SPDX-FileCopyrightText: 2022 g10 Code GmbH
     SPDX-FileContributor: Ingo Klöcker <dev@ingo-kloecker.de>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #pragma once
 
 #include "kleo_export.h"
 
 #include <QTreeView>
 
 namespace Kleo
 {
 
 /**
  * A tree view that allows accessible column by column keyboard navigation
  * and that has customizable columns through a context menu in the header.
  *
  * Column by column navigation is required to make a tree view accessible.
  *
  * The TreeView allows column by column keyboard navigation even if
  * the selection behavior is set to SelectRows and users can expand/collapse
  * list items. To achieve this it deactivates the standard behavior of QTreeView
  * to expand/collapse items if the left/right arrow keys are used.
  *
  * Additionally, you may want to disable parent-child navigation in tree views
  * with left/right arrow keys because this also interferes with column by column
  * navigation. You can do this by setting
  * "QTreeView { arrow-keys-navigate-into-children: 0; }"
  * as application style sheet.
  *
  * \sa TreeWidget
  */
 class KLEO_EXPORT TreeView : public QTreeView
 {
     Q_OBJECT
 public:
     TreeView(QWidget *parent = nullptr);
     ~TreeView() override;
 
     /**
      * Restores the layout state under key @p stateGroupName and enables state
      * saving when the object is destroyed. Make sure that @p stateGroupName is
      * unique for each place the widget occurs. Returns true if some state was
      * restored. If false is returned, no state was restored and the caller should
      * apply the default configuration.
      */
     bool restoreColumnLayout(const QString &stateGroupName);
 Q_SIGNALS:
     void columnEnabled(int column);
     void columnDisabled(int column);
 
 protected:
     bool eventFilter(QObject *watched, QEvent *event) override;
 
     QModelIndex moveCursor(QAbstractItemView::CursorAction cursorAction, Qt::KeyboardModifiers modifiers) override;
 
 private:
     class Private;
     const std::unique_ptr<Private> d;
 };
 }