src/views/selectionmanager.h

   1 /***************************************************************************
   2  *   Copyright (C) 2008 by Peter Penz <peter.penz@gmx.at>                  *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #ifndef SELECTIONMANAGER_H
  21 #define SELECTIONMANAGER_H
  22
  23 #include <kfileitem.h>
  24
  25 #include <QObject>
  26
  27 class QAbstractItemView;
  28 class QModelIndex;
  29 class QItemSelection;
  30 class SelectionToggle;
  31
  32 /**
  33  * @brief Allows to select and deselect items for item views.
  34  *
  35  * Whenever an item is hovered by the mouse, a toggle button is shown
  36  * which allows to select/deselect the current item.
  37  */
  38 class SelectionManager : public QObject
  39 {
  40     Q_OBJECT
  41
  42 public:
  43     SelectionManager(QAbstractItemView* parent);
  44     virtual ~SelectionManager();
  45
  46 public slots:
  47     /**
  48      * Resets the selection manager so that the toggle button gets
  49      * invisible.
  50      */
  51     void reset();
  52
  53 signals:
  54     /** Is emitted if the selection has been changed by the toggle button. */
  55     void selectionChanged();
  56
  57 private slots:
  58     void slotEntered(const QModelIndex& index);
  59     void slotViewportEntered();
  60     void setItemSelected(bool selected);
  61     void slotRowsRemoved(const QModelIndex& parent, int start, int end);
  62     void slotSelectionChanged(const QItemSelection& selected, const QItemSelection& deselected);
  63
  64 private:
  65     KUrl urlForIndex(const QModelIndex& index) const;
  66     const QModelIndex indexForUrl(const KUrl& url) const;
  67
  68 private:
  69     QAbstractItemView* m_view;
  70     SelectionToggle* m_toggle;
  71     bool m_connected;
  72 };
  73
  74 #endif