src/viewextensionsfactory.h

   1 /***************************************************************************
   2  *   Copyright (C) 2009 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 VIEWEXTENSIONSFACTORY_H
  21 #define VIEWEXTENSIONSFACTORY_H
  22
  23 #include <QObject>
  24
  25 class DolphinController;
  26 class DolphinFileItemDelegate;
  27 class DolphinViewAutoScroller;
  28 class KFilePreviewGenerator;
  29 class QModelIndex;
  30 class SelectionManager;
  31 class ToolTipManager;
  32 class QAbstractItemView;
  33
  34 /**
  35  * @brief Responsible for creating extensions like tooltips and previews
  36  *        that are available in all view implementations.
  37  *
  38  * Each view implementation (iconsview, detailsview, columnview) must
  39  * instantiate an instance of this class to assure having
  40  * a common behavior that is independent from the custom functionality of
  41  * a view implementation.
  42  */
  43 class ViewExtensionsFactory : public QObject
  44 {
  45     Q_OBJECT
  46
  47 public:
  48     explicit ViewExtensionsFactory(QAbstractItemView* view,
  49                                    DolphinController* controller);
  50     virtual ~ViewExtensionsFactory();
  51
  52     /**
  53      * Must be invoked by the item view, when QAbstractItemView::currentChanged()
  54      * has been called. Assures that the current item stays visible when it has been
  55      * changed by the keyboard.
  56      */
  57     void handleCurrentIndexChange(const QModelIndex& current, const QModelIndex& previous);
  58
  59     DolphinFileItemDelegate* fileItemDelegate() const;
  60
  61 protected:
  62     virtual bool eventFilter(QObject* watched, QEvent* event);
  63
  64 private slots:
  65     void slotZoomLevelChanged();
  66     void cancelPreviews();
  67     void slotShowPreviewChanged();
  68     void requestActivation();
  69
  70 private:
  71     DolphinController* m_controller;
  72     ToolTipManager* m_toolTipManager;
  73     KFilePreviewGenerator* m_previewGenerator;
  74     SelectionManager* m_selectionManager;
  75     DolphinViewAutoScroller* m_autoScroller;
  76     DolphinFileItemDelegate* m_fileItemDelegate;
  77 };
  78
  79 #endif
  80