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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (info@qt.nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/
#ifndef WIDGETPLUGINPATH_H
#define WIDGETPLUGINPATH_H
#include "widgetpluginmanager.h"
#include <QtCore/QObject>
#include <QWeakPointer>
#include <QtCore/QList>
#include <QtCore/QDir>
#include <QtGui/QStandardItem>
QT_BEGIN_NAMESPACE
class QString;
class QAbstractItemModel;
QT_END_NAMESPACE
namespace QmlDesigner {
class IWidgetPlugin;
namespace Internal {
// Dumb plugin data structure. Note that whereas QObjects can
// casted to an interface, QWeakPointer does not work with the
// interface class, so, we need a separate QWeakPointer as a guard
// to detect the deletion of a plugin instance which can happen
// in theory.
struct WidgetPluginData {
WidgetPluginData(const QString &p = QString());
QString path;
bool failed;
QString errorMessage;
QWeakPointer<QObject> instanceGuard;
IWidgetPlugin *instance;
};
// PluginPath: Manages a plugin directory. It does nothing
// on construction following the "as lazy as possible" principle.
// In the "loaded" stage, it scans the directories and creates
// a list of PluginData for the libraries found.
// getInstances() will return the fully initialized list of
// IPlugins.
class WidgetPluginPath {
public:
explicit WidgetPluginPath(const QDir &path);
void getInstances(WidgetPluginManager::IWidgetPluginList *list);
QDir path() const { return m_path; }
// Convenience to populate a "About Plugin" dialog with
// plugins from that path. Forces initialization.
QStandardItem *createModelItem();
private:
typedef QList<WidgetPluginData> PluginDataList;
static QStringList libraryFilePaths(const QDir &dir);
void clear();
void ensureLoaded();
QDir m_path;
bool m_loaded;
PluginDataList m_plugins;
};
} // namespace Internal
} // namespace QmlDesigner
#endif // WIDGETPLUGINPATH_H
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