// vim: set tabstop=4 shiftwidth=4 noexpandtab:
/*
Gwenview: an image viewer
Copyright 2010 Aurélien Gâteau <agateau@kde.org>

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, Cambridge, MA 02110-1301, USA.

*/
// Self
#include "documentjob.h"

// Qt
#include <QFuture>
#include <QFutureWatcher>
#include <QtConcurrentRun>

// KDE
#include <kapplication.h>
#include <kdebug.h>
#include <kdialogjobuidelegate.h>
#include <klocale.h>

// Local

namespace Gwenview {


struct DocumentJobPrivate {
	Document::Ptr mDoc;
};


DocumentJob::DocumentJob()
: KCompositeJob(0)
, d(new DocumentJobPrivate) {
	KDialogJobUiDelegate* delegate = new KDialogJobUiDelegate;
	delegate->setWindow(KApplication::kApplication()->activeWindow());
	delegate->setAutoErrorHandlingEnabled(true);
	setUiDelegate(delegate);
}


DocumentJob::~DocumentJob() {
	delete d;
}


Document::Ptr DocumentJob::document() const {
	return d->mDoc;
}


void DocumentJob::setDocument(const Document::Ptr& doc) {
	d->mDoc = doc;
}


void DocumentJob::start() {
	QMetaObject::invokeMethod(this, "doStart", Qt::QueuedConnection);
}


bool DocumentJob::checkDocumentEditor() {
	if (!document()->editor()) {
		setError(NoDocumentEditorError);
		setErrorText(i18nc("@info", "Gwenview cannot edit this kind of image."));
		return false;
	}
	return true;
}


void ThreadedDocumentJob::doStart() {
	QFuture<void> future = QtConcurrent::run(this, &ThreadedDocumentJob::threadedStart);
	QFutureWatcher<void>* watcher = new QFutureWatcher<void>(this);
	watcher->setFuture(future);
	connect(watcher, SIGNAL(finished()), SLOT(emitResult()));
}

} // namespace

#include <documentjob.moc>
