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/*********
*
* This file is part of BibleTime's source code, http://www.bibletime.info/.
*
* Copyright 1999-2008 by the BibleTime developers.
* The BibleTime source code is licensed under the GNU General Public License version 2.0.
*
**********/

#ifndef CMODULECHOOSERBUTTON_H
#define CMODULECHOOSERBUTTON_H

//BibleTime includes
class CSwordModuleInfo;
#include "backend/btmoduletreeitem.h"
#include "util/cpointers.h"

//Qt includes
#include <QToolButton>
#include <QList>

class QMenu;
class CModuleChooserBar;

/** The CModuleChooserButton displays a list of submenus sorted by language which contain the possible modules
  * which can be displayed together with the first one.
  * @author The BibleTime team
  */
class CModuleChooserButton : public QToolButton, public CPointers  {
	Q_OBJECT
public:

	/** Filter out modules of wrong type. See populateMenu() and BTModuleTreeItem. */
	struct TypeFilter : public BTModuleTreeItem::Filter {
		TypeFilter(CSwordModuleInfo::ModuleType t) {m_mType = t;}
		bool filter(CSwordModuleInfo* mi) { return (mi->type() == m_mType); }
		CSwordModuleInfo::ModuleType m_mType;
	};

	CModuleChooserButton(CSwordModuleInfo* useModule, CSwordModuleInfo::ModuleType type, const int id, CModuleChooserBar *parent);
	~CModuleChooserButton();

	CSwordModuleInfo* module();
	/**
	* Returns the id used for this button.
	*/
	int getId() const;
	void updateMenuItems();

protected:
	/** Populates the menu with language submenus and module items. */
	void populateMenu();
	/** Adds items to the menu recursively. */
	void addItemToMenu(BTModuleTreeItem* item, QMenu* menu);

private:
	/**
	* Returns the icon used for the current status.
	*/
	const QString iconName();

	bool m_hasModule;
	int m_id;
	QAction* m_noneAction;
	CSwordModuleInfo::ModuleType m_moduleType;
	CSwordModuleInfo* m_module;

	QMenu* m_popup;
	QList<QMenu*> m_submenus;

	CModuleChooserBar* m_moduleChooserBar;


private slots:
	void moduleChosen(QAction* action );

signals:
	void sigRemoveButton(const int ID);
	void sigAddButton();
	void sigChanged();
};
#endif