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/***************************************************************************
* Copyright (C) 2006-2009 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 INFORMATIONPANEL_H
#define INFORMATIONPANEL_H
#include <panels/panel.h>
#include <KFileItemList>
class InformationPanelContent;
namespace KIO
{
class Job;
}
/**
* @brief Panel for showing meta information of one ore more selected items.
*/
class InformationPanel : public Panel
{
Q_OBJECT
public:
explicit InformationPanel(QWidget* parent = 0);
virtual ~InformationPanel();
signals:
void urlActivated(const KUrl& url);
public slots:
/**
* This is invoked to inform the panel that the user has selected a new
* set of items.
*/
void setSelection(const KFileItemList& selection);
/**
* Does a delayed request of information for the item \a item.
* If within this delay InformationPanel::setUrl() or InformationPanel::setSelection()
* are invoked, then the request will be skipped. Requesting a delayed item information
* makes sense when hovering items.
*/
void requestDelayedItemInfo(const KFileItem& item);
protected:
/** @see Panel::urlChanged() */
virtual bool urlChanged();
/** @see QWidget::showEvent() */
virtual void showEvent(QShowEvent* event);
/** @see QWidget::resizeEvent() */
virtual void resizeEvent(QResizeEvent* event);
/** @see QWidget::contextMenuEvent() */
virtual void contextMenuEvent(QContextMenuEvent* event);
private slots:
/**
* Shows the information for the item of the URL which has been provided by
* InformationPanel::requestItemInfo() and provides default actions.
*/
void showItemInfo();
/**
* Shows the information for the currently displayed folder as a result from
* a stat job issued in showItemInfo().
*/
void slotFolderStatFinished(KJob* job);
/**
* Triggered if the request for item information has timed out.
* @see InformationPanel::requestDelayedItemInfo()
*/
void slotInfoTimeout();
/**
* Resets the information panel to show the current
* URL (InformationPanel::url()). Is called by
* DolphinInformationPanel::markUrlAsInvalid().
*/
void reset();
void slotFileRenamed(const QString& source, const QString& dest);
void slotFilesAdded(const QString& directory);
void slotFilesChanged(const QStringList& files);
void slotFilesRemoved(const QStringList& files);
void slotEnteredDirectory(const QString& directory);
void slotLeftDirectory(const QString& directory);
private:
/** Assures that any pending item information request is cancelled. */
void cancelRequest();
/**
* Shows the meta information for the current shown item inside
* a label.
*/
void showMetaInfo();
/**
* Returns true, if \a url is equal to the shown URL m_shownUrl.
*/
bool isEqualToShownUrl(const KUrl& url) const;
/**
* Marks the URL as invalid and will reset the Information Panel
* after a short delay. The reset is not done synchronously to
* prevent expensive updates during temporary invalid URLs by
* e. g. changing the directory.
*/
void markUrlAsInvalid();
void init();
private:
bool m_initialized;
bool m_pendingPreview;
QTimer* m_infoTimer;
QTimer* m_urlChangedTimer;
QTimer* m_resetUrlTimer;
// URL that is currently shown in the Information Panel.
KUrl m_shownUrl;
// URL candidate that will replace m_shownURL after a delay.
// Used to remember URLs when hovering items.
KUrl m_urlCandidate;
// URL candidate that is marked as invalid (e. g. because the directory
// has been deleted or the shown item has been renamed). The Information
// Panel will be reset asynchronously to prevent unnecessary resets when
// a directory has been changed.
KUrl m_invalidUrlCandidate;
KFileItem m_fileItem; // file item for m_shownUrl if available (otherwise null)
KFileItemList m_selection;
KIO::Job* m_folderStatJob;
InformationPanelContent* m_content;
};
#endif // INFORMATIONPANEL_H
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