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/***************************************************************************
 *   Copyright (C) 2008-2011 by Ilya Kotov                                 *
 *   forkotov02@hotmail.ru                                                 *
 *                                                                         *
 *   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.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/
#ifndef UiHelper_H
#define UiHelper_H

#include <QObject>
#include <QMap>
#include <QList>
#include <QPointer>
#include <QStringList>
#include <QApplication>
#include <QPointer>
#include "playlistmanager.h"
#include "playlistmodel.h"

class QAction;
class QMenu;
class QWidget;
class General;
class GeneralFactory;
class JumpToTrackDialog;

/*! @brief The UiHelper class provides simple api to access general plugins and some gui features.
 * @author Ilya Kotov <forkotov02@hotmail.ru>
 */
class UiHelper : public QObject
{
    Q_OBJECT
public:
    /*!
     * Object constructor,
     * @param parent Parent object
     */
    UiHelper(QObject *parent = 0);
    /*!
     * Destructor
     */
    ~UiHelper();
    /*!
     * Enum of menu type
     */
    enum MenuType
    {
        TOOLS_MENU = 0, /*!< tools menu */
        PLAYLIST_MENU   /*!< playlist context menu */
    };
    /*!
     * Returns \b true if one of the general plugin can change visibility, otherwise returns \b false
     */
    bool visibilityControl();
    /*!
     * Adds the newly created action to the menu with type \b type.
     * Menu with type \b type should be created first.
     * @param action Pointer of action.
     * @param type Menu type.
     */
    void addAction(QAction *action, MenuType type = TOOLS_MENU);
    /*!
     * Removes action \b action from created menus.
     */
    void removeAction(QAction *action);
    /*!
     * Returns a list of actions of the menu type \b type
     */
    QList<QAction *> actions(MenuType type = TOOLS_MENU);
    /*!
     * Creates menu with type \b type
     * @param type Menu type.
     * @param title Menu title.
     * @param parent Parent widget
     */
    QMenu *createMenu(MenuType type, const QString &title = QString(), QWidget *parent = 0);

    void addFile(QWidget *parent = qApp->activeWindow(),
                 PlayListModel *model = PlayListManager::instance()->selectedPlayList());
    void addDirectory(QWidget *parent = qApp->activeWindow(),
                      PlayListModel *model = PlayListManager::instance()->selectedPlayList());
    void loadPlayList(QWidget *parent = qApp->activeWindow(),
                     PlayListModel *model = PlayListManager::instance()->selectedPlayList());
    void savePlayList(QWidget *parent = qApp->activeWindow(),
                     PlayListModel *model = PlayListManager::instance()->selectedPlayList());
    void jumpToTrack(QWidget *parent = qApp->activeWindow(),
                     PlayListModel *model = PlayListManager::instance()->selectedPlayList());
    void about(QWidget *parent = 0);
    /*!
     * Returns a pointer to the object's instance.
     */
    static UiHelper* instance();

public slots:
    /*!
     * Toggles player window visibility.
     */
    void toggleVisibility();
    /*!
     * Tells the player to exit.
     */
    void exit();

signals:
    /*!
     * Emitted when some general plugin requires to toggle visibility.
     * Use it to show/hide player's window.
     */
    void toggleVisibilityCalled();

private slots:
    void removeAction(QObject *action);

private:
    QMap <GeneralFactory*, General*> m_generals;
    QList <QAction*> m_toolsActions;
    QList <QAction*> m_playlistActions;
    QPointer<QMenu> m_toolsMenu;
    QPointer<QMenu> m_playlistMenu;
    QString m_lastDir;
    QPointer <JumpToTrackDialog> m_jumpDialog;
    static UiHelper* m_instance;
};

#endif