src/dolphincolumnview.h

   1 /***************************************************************************
   2  *   Copyright (C) 2007 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 DOLPHINCOLUMNVIEW_H
  21 #define DOLPHINCOLUMNVIEW_H
  22
  23 #include <QColumnView>
  24 #include <QStyleOption>
  25
  26 class DolphinController;
  27 class KDirLister;
  28 class KUrl;
  29
  30 /**
  31  * @brief Represents the view, where each directory is show as separate column.
  32  *
  33  * @see DolphinIconsView
  34  * @see DolphinDetailsView
  35  */
  36 class DolphinColumnView : public QColumnView
  37 {
  38     Q_OBJECT
  39
  40 public:
  41     explicit DolphinColumnView(QWidget* parent, DolphinController* controller);
  42     virtual ~DolphinColumnView();
  43
  44     /**
  45      * Inverts the selection for the current active column.
  46      */
  47     void invertSelection();
  48
  49 public slots:
  50     /** @see QAbstractItemView::selectAll() */
  51     virtual void selectAll();
  52
  53 protected:
  54     virtual QAbstractItemView* createColumn(const QModelIndex& index);
  55     virtual void mousePressEvent(QMouseEvent* event);
  56     virtual void dragEnterEvent(QDragEnterEvent* event);
  57     virtual void dropEvent(QDropEvent* event);
  58
  59 private slots:
  60     void zoomIn();
  61     void zoomOut();
  62     void triggerItem(const QModelIndex& index);
  63
  64     /**
  65      * Updates the activation state of all columns, where \a url
  66      * represents the URL of the active column. All operations
  67      * are applied only to the column which is marked as active.
  68      */
  69     void updateColumnsState(const KUrl& url);
  70
  71     /**
  72      * Updates the size of the decoration dependent on the
  73      * icon size of the ColumnModeSettings. The controller
  74      * will get informed about possible zoom in/zoom out
  75      * operations.
  76      */
  77     void updateDecorationSize();
  78
  79 private:
  80     bool isZoomInPossible() const;
  81     bool isZoomOutPossible() const;
  82
  83     /**
  84      * Requests the activation for the column \a column. The URL
  85      * navigator will be changed to represent the column. It is
  86      * assured that the selection model of \a column will be set
  87      * to the selection model of the Column View.
  88      */
  89     void requestActivation(QWidget* column);
  90
  91     /**
  92      * Requests the selection model from the Column View for \a view.
  93      * If another column has already obtained the Column View selection
  94      * model, it will be replaced by a default selection model.
  95      */
  96     void requestSelectionModel(QAbstractItemView* view);
  97
  98     /**
  99      * Helper method for selecting all items of an active column by \a flags.
 100      */
 101     void selectActiveColumn(QItemSelectionModel::SelectionFlags flags);
 102
 103 private:
 104     DolphinController* m_controller;
 105
 106     friend class ColumnWidget;
 107 };
 108
 109 #endif