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/***************************************************************************
* Copyright (C) 2008 by Sebastian Trueg <[email protected]> *
* Copyright (C) 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 METADATAWIDGET_H
#define METADATAWIDGET_H
#include <config-nepomuk.h>
#ifdef HAVE_NEPOMUK
#include <Nepomuk/Tag>
#else
// The HAVE_NEPOMUK macro cannot be used in combination with
// Q_PRIVATE_SLOT, hence a workaround is used for environments
// where Nepomuk is not available:
namespace Nepomuk {
typedef int Tag;
}
#endif
#include <QList>
#include <QWidget>
class KFileItem;
class KFileItemList;
/**
* @brief Shows the meta data of one or more file items.
*
* Meta data like name, size, rating, comment, ... are
* shown as several rows containing a description and
* the meta data value. It is possible for the user
* to change specific meta data like rating, tags and
* comment.
*/
class MetaDataWidget : public QWidget
{
Q_OBJECT
public:
explicit MetaDataWidget(QWidget* parent = 0);
virtual ~MetaDataWidget();
/**
* Triggers the asynchronous loading of the meta data
* for the file item \p item. Connect to the signal
* loadingFinished() to be able to read the meta
* data.
*/
void setItem(const KFileItem& item);
/**
* Triggers the asynchronous loading of the meta data
* for the file items \p items. Connect to the signal
* loadingFinished() to be able to read the meta
* data.
*/
void setItems(const KFileItemList& items);
/**
* Opens a dialog which allows to configure the visibility
* of meta data.
*/
void openConfigurationDialog();
/**
* Returns the rating for the currently set item(s). It is required
* to wait for the signal loadingFinished() or ratingChanged()
* to get a valid result.
*/
unsigned int rating() const;
/**
* Returns the tags for the currently set item(s). It is required
* to wait for the signal loadingFinished() or tagsChanged()
* to get a valid result.
*/
QList<Nepomuk::Tag> tags() const;
/**
* Returns the comment for the currently set item(s). It is required
* to wait for the signal loadingFinished() or commentChanged()
* to get a valid result.
*/
QString comment() const;
signals:
/**
* Is emitted if the loading of the meta data has been finished
* after invoking MetaDataWidget::setItem() or MetaDataWidget::setItems().
*/
void loadingFinished();
/**
* Is emitted after the user has changed the rating.
* Note that the signal is not emitted if the rating has
* indirectly been changed by MetaDataWidget::setItem() or
* MetaDataWidget::setItems(). In this case connect to
* the signal loadingFinished() instead.
*/
void ratingChanged(const int rating);
/**
* Is emitted after the user has changed the tags.
* Note that the signal is not emitted if the rating has
* indirectly been changed by MetaDataWidget::setItem() or
* MetaDataWidget::setItems(). In this case connect to
* the signal loadingFinished() instead.
*/
void tagsChanged(const QList<Nepomuk::Tag>& tags);
/**
* Is emitted after the user has changed the comment.
* Note that the signal is not emitted if the rating has
* indirectly been changed by MetaDataWidget::setItem() or
* MetaDataWidget::setItems(). In this case connect to
* the signal loadingFinished() instead.
*/
void commentChanged(const QString& comment);
private:
class Private;
Private* d;
Q_PRIVATE_SLOT(d, void slotLoadingFinished())
Q_PRIVATE_SLOT(d, void slotRatingChanged(unsigned int rating))
Q_PRIVATE_SLOT(d, void slotTagsChanged(const QList<Nepomuk::Tag>& tags))
Q_PRIVATE_SLOT(d, void slotCommentChanged(const QString& comment))
Q_PRIVATE_SLOT(d, void slotMetaDataUpdateDone())
};
#endif
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