haiku/headers/os/interface/MenuBar.h

/*******************************************************************************
/
/	File:			Menubar.h
/
/   Description:    BMenuBar is a menu that's at the root of a menu hierarchy.
/
/	Copyright 1994-98, Be Incorporated, All Rights Reserved
/
*******************************************************************************/

#ifndef _MENU_BAR_H
#define _MENU_BAR_H

#include <BeBuild.h>
#include <InterfaceDefs.h>
#include <Menu.h>
#include <OS.h>

/*----------------------------------------------------------------*/
/*----- BmenuBar declarations ------------------------------------*/

enum menu_bar_border {
	B_BORDER_FRAME,
	B_BORDER_CONTENTS,
	B_BORDER_EACH_ITEM
};

class BMenu;
class BWindow;
class BMenuItem;
class BMenuField;

/*----------------------------------------------------------------*/
/*----- BMenuBar class -------------------------------------------*/

class BMenuBar : public BMenu
{
public:
						BMenuBar(	BRect frame,
									const char *title,
									uint32 resizeMask =
										B_FOLLOW_LEFT_RIGHT | B_FOLLOW_TOP,
									menu_layout layout = B_ITEMS_IN_ROW,
									bool resizeToFit = true);
						BMenuBar(BMessage *data);
virtual					~BMenuBar();
static	BArchivable		*Instantiate(BMessage *data);
virtual	status_t		Archive(BMessage *data, bool deep = true) const;

virtual	void			SetBorder(menu_bar_border border);
		menu_bar_border	Border() const;
virtual	void			Draw(BRect updateRect);
virtual void			AttachedToWindow();
virtual	void			DetachedFromWindow();
virtual void			MessageReceived(BMessage *msg);
virtual	void			MouseDown(BPoint where);
virtual void			WindowActivated(bool state);
virtual	void			MouseUp(BPoint where);
virtual	void			FrameMoved(BPoint new_position);
virtual	void			FrameResized(float new_width, float new_height);

virtual void			Show();
virtual void			Hide();

virtual BHandler		*ResolveSpecifier(BMessage *msg,
										int32 index,
										BMessage *specifier,
										int32 form,
										const char *property);
virtual status_t		GetSupportedSuites(BMessage *data);

virtual void			ResizeToPreferred();
virtual void			GetPreferredSize(float *width, float *height);
virtual void			MakeFocus(bool state = true);
virtual void			AllAttached();
virtual void			AllDetached();


/*----- Private or reserved -----------------------------------------*/
virtual status_t		Perform(perform_code d, void *arg);

private:
friend class BWindow;
friend class BMenuItem;
friend class BMenuField;
friend class BMenu;

virtual	void			_ReservedMenuBar1();
virtual	void			_ReservedMenuBar2();
virtual	void			_ReservedMenuBar3();
virtual	void			_ReservedMenuBar4();

		BMenuBar		&operator=(const BMenuBar &);

		void			StartMenuBar(	int32 menuIndex,
										bool sticky = true,
										bool show_menu = false,
										BRect *special_rect = NULL);
static	long			TrackTask(void *arg);
		BMenuItem		*Track(	int32 *action,
								int32 startIndex = -1,
								bool showMenu = false);
		void			StealFocus();
		void			RestoreFocus();
		void			InitData(menu_layout layout);

		menu_bar_border	fBorder;
		thread_id		fTrackingPID;
		int32			fPrevFocusToken;
		sem_id			fMenuSem;
		BRect*			fLastBounds;
		uint32			_reserved[2];	// was 3

		bool			fTracking;
};

/*-------------------------------------------------------------*/
/*-------------------------------------------------------------*/

#endif /* _MENU_BAR_H */