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/***************************************************************************
* Copyright (C) 2007 by Peter Penz <[email protected]> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
***************************************************************************/
#ifndef DOLPHINCOLUMNVIEW_H
#define DOLPHINCOLUMNVIEW_H
#include <kurl.h>
#include <QAbstractItemView>
#include <QList>
#include <QString>
#include <QStyleOption>
class DolphinColumnWidget;
class DolphinController;
class DolphinModel;
class QAbstractProxyModel;
class QFrame;
class QTimeLine;
/**
* @brief Represents the view, where each directory is show as separate column.
*
* @see DolphinIconsView
* @see DolphinDetailsView
*/
class DolphinColumnView : public QAbstractItemView
{
Q_OBJECT
public:
explicit DolphinColumnView(QWidget* parent, DolphinController* controller);
virtual ~DolphinColumnView();
virtual QModelIndex indexAt(const QPoint& point) const;
virtual void scrollTo(const QModelIndex& index, ScrollHint hint = EnsureVisible);
virtual QRect visualRect(const QModelIndex& index) const;
/** Inverts the selection of the currently active column. */
void invertSelection();
/**
* Reloads the content of all columns. In opposite to non-hierarchical views
* it is not enough to reload the KDirLister, instead this method must be explicitly
* invoked.
*/
void reload();
/**
* Adjusts the root URL of the first column and removes all
* other columns.
*/
void setRootUrl(const KUrl& url);
/** Returns the URL of the first column. */
KUrl rootUrl() const;
/**
* Filters the currently shown items by \a nameFilter. All items
* which contain the given filter string will be shown.
*/
void setNameFilter(const QString& nameFilter);
/**
* Returns the currently used name filter. All items
* which contain the name filter will be shown.
*/
QString nameFilter() const;
/**
* Shows the column which represents the URL \a url. If the column
* is already shown, it gets activated, otherwise it will be created.
*/
void showColumn(const KUrl& url);
public slots:
/** @see QAbstractItemView::selectAll() */
virtual void selectAll();
protected:
virtual bool isIndexHidden(const QModelIndex& index) const;
virtual QModelIndex moveCursor(CursorAction cursorAction, Qt::KeyboardModifiers modifiers);
virtual void setSelection(const QRect& rect, QItemSelectionModel::SelectionFlags flags);
virtual QRegion visualRegionForSelection(const QItemSelection& selection) const;
virtual int horizontalOffset() const;
virtual int verticalOffset() const;
virtual void mousePressEvent(QMouseEvent* event);
virtual void resizeEvent(QResizeEvent* event);
private slots:
void zoomIn();
void zoomOut();
/**
* Moves the content of the columns view to represent
* the scrollbar position \a x.
*/
void moveContentHorizontally(int x);
/**
* Updates the size of the decoration dependent on the
* icon size of the ColumnModeSettings. The controller
* will get informed about possible zoom in/zoom out
* operations.
*/
void updateDecorationSize();
/**
* Updates the background color of the columns to respect
* the current activation state \a active.
*/
void updateColumnsBackground(bool active);
void slotShowHiddenFilesChanged();
void slotShowPreviewChanged();
private:
bool isZoomInPossible() const;
bool isZoomOutPossible() const;
DolphinColumnWidget* activeColumn() const;
/**
* Deactivates the currently active column and activates
* the new column indicated by \a index. m_index represents
* the active column afterwards. Also the URL of the navigator
* will be adjusted to reflect the column URL.
*/
void setActiveColumnIndex(int index);
void layoutColumns();
void updateScrollBar();
/**
* Assures that the currently active column is fully visible
* by adjusting the horizontal position of the content.
*/
void assureVisibleActiveColumn();
/**
* Request the activation for the column \a column. It is assured
* that the columns gets fully visible by adjusting the horizontal
* position of the content.
*/
void requestActivation(DolphinColumnWidget* column);
/** Removes all columns except of the root column. */
void removeAllColumns();
private:
DolphinController* m_controller;
bool m_active;
int m_index;
int m_contentX;
QList<DolphinColumnWidget*> m_columns;
QFrame* m_emptyViewport;
QTimeLine* m_animation;
QString m_nameFilter;
friend class DolphinColumnWidget;
};
inline DolphinColumnWidget* DolphinColumnView::activeColumn() const
{
return m_columns[m_index];
}
#endif
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