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pluginfileiofactory.cpp
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pluginfileiofactory.cpp
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/*
* Dunnart - Constraint-based Diagram Editor
*
* Copyright (C) 2010 Monash University
*
* 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.
*
*
* Author(s): Michael Wybrow <http://michael.wybrow.info/>
*/
#include <QFileInfo>
#include "libdunnartcanvas/pluginfileiofactory.h"
#include "libdunnartcanvas/fileioplugininterface.h"
namespace dunnart {
// Shared singleton:
static PluginFileIOFactory *shared_plugin_fileio_factory = NULL;
PluginFileIOFactory *sharedPluginFileIOFactory(void)
{
if (shared_plugin_fileio_factory == NULL)
{
shared_plugin_fileio_factory = new PluginFileIOFactory();
}
return shared_plugin_fileio_factory;
}
PluginFileIOFactory::PluginFileIOFactory()
{
}
QString PluginFileIOFactory::openableFileFiltersString(void) const
{
QString fileTypes;
foreach (QString fileExtension, m_file_loading_handlers.keys())
{
// Separator.
fileTypes += ";;";
fileTypes += m_file_loading_handlers[fileExtension]->fileExtensionDescription(fileExtension) + " (*." + fileExtension + ")";
}
return fileTypes;
}
QString PluginFileIOFactory::saveableFileFiltersString(void) const
{
QString fileTypes;
foreach (QString fileExtension, m_file_saving_handlers.keys())
{
if (fileTypes.length() > 0)
{
// Separator.
fileTypes += ";;";
}
fileTypes += m_file_saving_handlers[fileExtension]->fileExtensionDescription(fileExtension) + " (*." + fileExtension + ")";
}
return fileTypes;
}
QString PluginFileIOFactory::openableFileTypesString(void) const
{
QString fileTypes;
foreach (QString fileExtension, m_file_loading_handlers.keys())
{
if (fileTypes.length() > 0)
{
// Separator.
fileTypes += " ";
}
fileTypes += "*." + fileExtension;
}
return fileTypes;
}
void PluginFileIOFactory::registerFileIOPlugin(FileIOPluginInterface *fileIOPlugin)
{
foreach (QString fileType, fileIOPlugin->saveableFileExtensions())
{
m_file_saving_handlers[fileType] = fileIOPlugin;
}
foreach (QString fileType, fileIOPlugin->loadableFileExtensions())
{
m_file_loading_handlers[fileType] = fileIOPlugin;
}
}
bool PluginFileIOFactory::saveDiagramToFile(Canvas *canvas,
const QFileInfo& fileInfo, QString& errorMessage)
{
QString fileExtension = fileInfo.suffix();
if (m_file_saving_handlers.contains(fileExtension))
{
return m_file_saving_handlers[fileExtension]->
saveDiagramToFile(canvas, fileInfo, errorMessage);
}
// This shouldn't really happen, but just in case.
errorMessage = QObject::tr("File handler plugin was not available.");
return false;
}
bool PluginFileIOFactory::loadDiagramFromFile(Canvas *canvas,
const QFileInfo& fileInfo, QString& errorMessage)
{
QString fileExtension = fileInfo.suffix();
if (m_file_loading_handlers.contains(fileExtension))
{
return m_file_loading_handlers[fileExtension]->
loadDiagramFromFile(canvas, fileInfo, errorMessage);
}
// This shouldn't really happen, but just in case.
errorMessage = QObject::tr("File handler plugin was not available.");
return false;
}
}
// vim: filetype=cpp ts=4 sw=4 et tw=0 wm=0 cindent