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/***************************************************************************
* 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 REVISIONCONTROLOBSERVER_H
#define REVISIONCONTROLOBSERVER_H
#include <libdolphin_export.h>
#include <kfileitem.h>
#include <revisioncontrolplugin.h>
#include <QList>
#include <QMutex>
#include <QObject>
#include <QPersistentModelIndex>
#include <QString>
class DolphinModel;
class KDirLister;
class KFileItemList;
class QAbstractItemView;
class QAction;
class QTimer;
class UpdateItemStatesThread;
/**
* @brief Observes all revision control plugins.
*
* The item view gets updated automatically if the currently shown
* directory is under revision control.
*
* @see RevisionControlPlugin
*/
class LIBDOLPHINPRIVATE_EXPORT RevisionControlObserver : public QObject
{
Q_OBJECT
public:
RevisionControlObserver(QAbstractItemView* view);
virtual ~RevisionControlObserver();
QList<QAction*> contextMenuActions(const KFileItemList& items) const;
QList<QAction*> contextMenuActions(const QString& directory) const;
signals:
/**
* Is emitted if an information message with the content \a msg
* should be shown.
*/
void infoMessage(const QString& msg);
/**
* Is emitted if an error message with the content \a msg
* should be shown.
*/
void errorMessage(const QString& msg);
/**
* Is emitted if an "operation completed" message with the content \a msg
* should be shown.
*/
void operationCompletedMessage(const QString& msg);
private slots:
/**
* Invokes verifyDirectory() with a small delay. If delayedDirectoryVerification()
* is invoked before the delay has been exceeded, the delay will be reset. This
* assures that a lot of short requests for directory verification only result
* in one (expensive) call.
*/
void delayedDirectoryVerification();
/**
* Invokes verifyDirectory() with a small delay. In opposite to
* delayedDirectoryVerification() it and assures that the verification of
* the directory is done silently without information messages.
*/
void silentDirectoryVerification();
void verifyDirectory();
void applyUpdatedItemStates();
private:
void updateItemStates();
private:
struct ItemState
{
QPersistentModelIndex index;
KFileItem item;
RevisionControlPlugin::RevisionState revision;
};
bool m_pendingItemStatesUpdate;
bool m_revisionedDirectory;
bool m_silentUpdate; // if true, no messages will be send during the update
// of revision states
QAbstractItemView* m_view;
KDirLister* m_dirLister;
DolphinModel* m_dolphinModel;
QTimer* m_dirVerificationTimer;
mutable QMutex m_pluginMutex;
RevisionControlPlugin* m_plugin;
UpdateItemStatesThread* m_updateItemStatesThread;
friend class UpdateItemStatesThread;
};
#endif // REVISIONCONTROLOBSERVER_H
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