haiku/headers/os/interface/MenuItem.h

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/*******************************************************************************
/
/ File: MenuItem.h
/
/ Description: BMenuItem represents a single item in a BMenu.
/ BSeparatorItem is a cosmetic menu item that demarcates
/ groups of other items.
/
/ Copyright 1994-98, Be Incorporated, All Rights Reserved
/
*******************************************************************************/
#ifndef _MENU_ITEM_H
#define _MENU_ITEM_H
#include <BeBuild.h>
#include <InterfaceDefs.h>
#include <Archivable.h>
#include <Invoker.h>
#include <Menu.h> /* For convenience */
class BMessage;
class BWindow;
/*----------------------------------------------------------------*/
/*----- BMenuItem class ------------------------------------------*/
class BMenuItem : public BArchivable, public BInvoker {
public:
BMenuItem( const char *label,
BMessage *message,
char shortcut = 0,
uint32 modifiers = 0);
BMenuItem(BMenu *menu, BMessage *message = NULL);
BMenuItem(BMessage *data);
virtual ~BMenuItem();
static BArchivable *Instantiate(BMessage *data);
virtual status_t Archive(BMessage *data, bool deep = true) const;
virtual void SetLabel(const char *name);
virtual void SetEnabled(bool state);
virtual void SetMarked(bool state);
virtual void SetTrigger(char ch);
virtual void SetShortcut(char ch, uint32 modifiers);
const char *Label() const;
bool IsEnabled() const;
bool IsMarked() const;
char Trigger() const;
char Shortcut(uint32 *modifiers = NULL) const;
BMenu *Submenu() const;
BMenu *Menu() const;
BRect Frame() const;
protected:
virtual void GetContentSize(float *width, float *height);
virtual void TruncateLabel(float max, char *new_label);
virtual void DrawContent();
virtual void Draw();
virtual void Highlight(bool on);
bool IsSelected() const;
BPoint ContentLocation() const;
/*----- Private or reserved -----------------------------------------*/
private:
friend class BMenu;
friend class BPopUpMenu;
friend class BMenuBar;
virtual void _ReservedMenuItem1();
virtual void _ReservedMenuItem2();
virtual void _ReservedMenuItem3();
virtual void _ReservedMenuItem4();
BMenuItem(const BMenuItem &);
BMenuItem &operator=(const BMenuItem &);
void InitData();
void InitMenuData(BMenu *menu);
void Install(BWindow *window);
/*----- Protected function -----------------------------------------*/
protected:
virtual status_t Invoke(BMessage *msg = NULL);
/*----- Private or reserved -----------------------------------------*/
private:
void Uninstall();
void SetSuper(BMenu *super);
void Select(bool on);
void DrawMarkSymbol();
void DrawShortcutSymbol();
void DrawSubmenuSymbol();
void DrawControlChar(const char *control);
void SetSysTrigger(char ch);
char *fLabel;
BMenu *fSubmenu;
BWindow *fWindow;
BMenu *fSuper;
BRect fBounds;
uint32 fModifiers;
float fCachedWidth;
int16 fTriggerIndex;
char fUserTrigger;
char fSysTrigger;
char fShortcutChar;
bool fMark;
bool fEnabled;
bool fSelected;
uint32 _reserved[4];
};
/*-------------------------------------------------------------*/
/*-------------------------------------------------------------*/
// We moved BSeparatorItem's declaration to its own file, but for source
// compatibility we have to export that class from here too.
#include <SeparatorItem.h>
#endif /* _MENU_ITEM_H */