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menu.h
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2002-08-31
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///////////////////////////////////////////////////////////////////////////////
// Name: wx/menu.h
// Purpose: wxMenu and wxMenuBar classes
// Author: Vadim Zeitlin
// Modified by:
// Created: 26.10.99
// RCS-ID: $Id: menu.h,v 1.24 2002/08/31 11:29:10 GD Exp $
// Copyright: (c) wxWindows team
// Licence: wxWindows license
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_MENU_H_BASE_
#define _WX_MENU_H_BASE_
#if defined(__GNUG__) && !defined(__APPLE__)
#pragma interface "menubase.h"
#endif
#if wxUSE_MENUS
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#include "wx/list.h" // for "template" list classes
#include "wx/window.h" // base class for wxMenuBar
// also include this one to ensure compatibility with old code which only
// included wx/menu.h
#include "wx/menuitem.h"
class WXDLLEXPORT wxMenu;
class WXDLLEXPORT wxMenuBarBase;
class WXDLLEXPORT wxMenuBar;
class WXDLLEXPORT wxMenuItem;
// pseudo template list classes
WX_DECLARE_EXPORTED_LIST(wxMenu, wxMenuList);
WX_DECLARE_EXPORTED_LIST(wxMenuItem, wxMenuItemList);
// ----------------------------------------------------------------------------
// conditional compilation
// ----------------------------------------------------------------------------
// having callbacks in menus is a wxWin 1.6x feature which should be replaced
// with event tables in wxWin 2.xx code - however provide it because many
// people like it a lot by default
#ifndef wxUSE_MENU_CALLBACK
#if WXWIN_COMPATIBILITY_2
#define wxUSE_MENU_CALLBACK 1
#else
#define wxUSE_MENU_CALLBACK 0
#endif // WXWIN_COMPATIBILITY_2
#endif // !defined(wxUSE_MENU_CALLBACK)
// ----------------------------------------------------------------------------
// wxMenu
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxMenuBase : public wxEvtHandler
{
public:
// create a menu
static wxMenu *New(const wxString& title = wxEmptyString, long style = 0);
// ctors
wxMenuBase(const wxString& title, long style = 0) : m_title(title)
{ Init(style); }
wxMenuBase(long style = 0)
{ Init(style); }
// dtor deletes all the menu items we own
virtual ~wxMenuBase();
// menu construction
// -----------------
// append any kind of item (normal/check/radio/separator)
void Append(int id,
const wxString& text,
const wxString& help = wxEmptyString,
wxItemKind kind = wxITEM_NORMAL)
{
DoAppend(wxMenuItem::New((wxMenu *)this, id, text, help, kind));
}
// append a separator to the menu
void AppendSeparator() { Append(wxID_SEPARATOR, wxEmptyString); }
// append a check item
void AppendCheckItem(int id,
const wxString& text,
const wxString& help = wxEmptyString)
{
Append(id, text, help, wxITEM_CHECK);
}
// append a radio item
void AppendRadioItem(int id,
const wxString& text,
const wxString& help = wxEmptyString)
{
Append(id, text, help, wxITEM_RADIO);
}
// append a submenu
void Append(int id,
const wxString& text,
wxMenu *submenu,
const wxString& help = wxEmptyString)
{
DoAppend(wxMenuItem::New((wxMenu *)this, id, text, help,
wxITEM_NORMAL, submenu));
}
// the most generic form of Append() - append anything
void Append(wxMenuItem *item) { DoAppend(item); }
// insert a break in the menu (only works when appending the items, not
// inserting them)
virtual void Break() { }
// insert an item before given position
bool Insert(size_t pos, wxMenuItem *item);
// insert an item before given position
void Insert(size_t pos,
int id,
const wxString& text,
const wxString& help = wxEmptyString,
wxItemKind kind = wxITEM_NORMAL)
{
Insert(pos, wxMenuItem::New((wxMenu *)this, id, text, help, kind));
}
// insert a separator
void InsertSeparator(size_t pos)
{
Insert(pos, wxMenuItem::New((wxMenu *)this));
}
// insert a check item
void InsertCheckItem(size_t pos,
int id,
const wxString& text,
const wxString& help = wxEmptyString)
{
Insert(pos, id, text, help, wxITEM_CHECK);
}
// insert a radio item
void InsertRadioItem(size_t pos,
int id,
const wxString& text,
const wxString& help = wxEmptyString)
{
Insert(pos, id, text, help, wxITEM_RADIO);
}
// insert a submenu
void Insert(size_t pos,
int id,
const wxString& text,
wxMenu *submenu,
const wxString& help = wxEmptyString)
{
Insert(pos, wxMenuItem::New((wxMenu *)this, id, text, help,
wxITEM_NORMAL, submenu));
}
// prepend an item to the menu
void Prepend(wxMenuItem *item)
{
Insert(0u, item);
}
// prepend any item to the menu
void Prepend(int id,
const wxString& text,
const wxString& help = wxEmptyString,
wxItemKind kind = wxITEM_NORMAL)
{
Insert(0u, id, text, help, kind);
}
// prepend a separator
void PrependSeparator()
{
InsertSeparator(0u);
}
// prepend a check item
void PrependCheckItem(int id,
const wxString& text,
const wxString& help = wxEmptyString)
{
InsertCheckItem(0u, id, text, help);
}
// prepend a radio item
void PrependRadioItem(int id,
const wxString& text,
const wxString& help = wxEmptyString)
{
InsertRadioItem(0u, id, text, help);
}
// prepend a submenu
void Prepend(int id,
const wxString& text,
wxMenu *submenu,
const wxString& help = wxEmptyString)
{
Insert(0u, id, text, submenu, help);
}
// detach an item from the menu, but don't delete it so that it can be
// added back later (but if it's not, the caller is responsible for
// deleting it!)
wxMenuItem *Remove(int id) { return Remove(FindChildItem(id)); }
wxMenuItem *Remove(wxMenuItem *item);
// delete an item from the menu (submenus are not destroyed by this
// function, see Destroy)
bool Delete(int id) { return Delete(FindChildItem(id)); }
bool Delete(wxMenuItem *item);
// delete the item from menu and destroy it (if it's a submenu)
bool Destroy(int id) { return Destroy(FindChildItem(id)); }
bool Destroy(wxMenuItem *item);
// menu items access
// -----------------
// get the items
size_t GetMenuItemCount() const { return m_items.GetCount(); }
const wxMenuItemList& GetMenuItems() const { return m_items; }
wxMenuItemList& GetMenuItems() { return m_items; }
// search
virtual int FindItem(const wxString& item) const;
wxMenuItem* FindItem(int id, wxMenu **menu = NULL) const;
// get/set items attributes
void Enable(int id, bool enable);
bool IsEnabled(int id) const;
void Check(int id, bool check);
bool IsChecked(int id) const;
void SetLabel(int id, const wxString& label);
wxString GetLabel(int id) const;
virtual void SetHelpString(int id, const wxString& helpString);
virtual wxString GetHelpString(int id) const;
// misc accessors
// --------------
// the title
virtual void SetTitle(const wxString& title) { m_title = title; }
const wxString GetTitle() const { return m_title; }
// event handler
void SetEventHandler(wxEvtHandler *handler) { m_eventHandler = handler; }
wxEvtHandler *GetEventHandler() const { return m_eventHandler; }
// invoking window
void SetInvokingWindow(wxWindow *win) { m_invokingWindow = win; }
wxWindow *GetInvokingWindow() const { return m_invokingWindow; }
// style
long GetStyle() const { return m_style; }
// implementation helpers
// ----------------------
// Updates the UI for a menu and all submenus recursively. source is the
// object that has the update event handlers defined for it. If NULL, the
// menu or associated window will be used.
void UpdateUI(wxEvtHandler* source = (wxEvtHandler*)NULL);
// get the menu bar this menu is attached to (may be NULL, always NULL for
// popup menus)
wxMenuBar *GetMenuBar() const { return m_menuBar; }
// called when the menu is attached/detached to/from a menu bar
virtual void Attach(wxMenuBarBase *menubar);
virtual void Detach();
// is the menu attached to a menu bar (or is it a popup one)?
bool IsAttached() const { return m_menuBar != NULL; }
// set/get the parent of this menu
void SetParent(wxMenu *parent) { m_menuParent = parent; }
wxMenu *GetParent() const { return m_menuParent; }
// implementation only from now on
// -------------------------------
// unlike FindItem(), this function doesn't recurse but only looks through
// our direct children and also may return the index of the found child if
// pos != NULL
wxMenuItem *FindChildItem(int id, size_t *pos = NULL) const;
// called to generate a wxCommandEvent, return TRUE if it was processed,
// FALSE otherwise
//
// the checked parameter may have boolean value or -1 for uncheckable items
bool SendEvent(int id, int checked = -1);
// compatibility: these functions are deprecated, use the new ones instead
// -----------------------------------------------------------------------
// use the versions taking wxItem_XXX now instead, they're more readable
// and allow adding the radio items as well
void Append(int id,
const wxString& text,
const wxString& help,
bool isCheckable)
{
Append(id, text, help, isCheckable ? wxITEM_CHECK : wxITEM_NORMAL);
}
void Insert(size_t pos,
int id,
const wxString& text,
const wxString& help,
bool isCheckable)
{
Insert(pos, id, text, help, isCheckable ? wxITEM_CHECK : wxITEM_NORMAL);
}
void Prepend(int id,
const wxString& text,
const wxString& help,
bool isCheckable)
{
Insert(0u, id, text, help, isCheckable);
}
#if WXWIN_COMPATIBILITY
bool Enabled(int id) const { return IsEnabled(id); }
bool Checked(int id) const { return IsChecked(id); }
wxMenuItem* FindItemForId(int itemId, wxMenu **itemMenu) const
{ return FindItem(itemId, itemMenu); }
wxList& GetItems() const { return (wxList &)m_items; }
#endif // WXWIN_COMPATIBILITY
#if wxUSE_MENU_CALLBACK || defined(__WXMOTIF__)
// wxWin 1.6x compatible menu event handling
wxFunction GetCallback() const { return m_callback; }
void Callback(const wxFunction func) { m_callback = func; }
wxFunction m_callback;
#endif // wxUSE_MENU_CALLBACK
protected:
// virtuals to override in derived classes
// ---------------------------------------
virtual bool DoAppend(wxMenuItem *item);
virtual bool DoInsert(size_t pos, wxMenuItem *item);
virtual wxMenuItem *DoRemove(wxMenuItem *item);
virtual bool DoDelete(wxMenuItem *item);
virtual bool DoDestroy(wxMenuItem *item);
// helpers
// -------
// common part of all ctors
void Init(long style);
// associate the submenu with this menu
void AddSubMenu(wxMenu *submenu);
wxMenuBar *m_menuBar; // menubar we belong to or NULL
wxMenu *m_menuParent; // parent menu or NULL
wxString m_title; // the menu title or label
wxMenuItemList m_items; // the list of menu items
wxWindow *m_invokingWindow; // for popup menus
long m_style; // combination of wxMENU_XXX flags
wxEvtHandler *m_eventHandler; // a pluggable in event handler
};
// ----------------------------------------------------------------------------
// wxMenuBar
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxMenuBarBase : public wxWindow
{
public:
// default ctor
wxMenuBarBase();
// dtor will delete all menus we own
virtual ~wxMenuBarBase();
// menu bar construction
// ---------------------
// append a menu to the end of menubar, return TRUE if ok
virtual bool Append(wxMenu *menu, const wxString& title);
// insert a menu before the given position into the menubar, return TRUE
// if inserted ok
virtual bool Insert(size_t pos, wxMenu *menu, const wxString& title);
// menu bar items access
// ---------------------
// get the number of menus in the menu bar
size_t GetMenuCount() const { return m_menus.GetCount(); }
// get the menu at given position
wxMenu *GetMenu(size_t pos) const;
// replace the menu at given position with another one, returns the
// previous menu (which should be deleted by the caller)
virtual wxMenu *Replace(size_t pos, wxMenu *menu, const wxString& title);
// delete the menu at given position from the menu bar, return the pointer
// to the menu (which should be deleted by the caller)
virtual wxMenu *Remove(size_t pos);
// enable or disable a submenu
virtual void EnableTop(size_t pos, bool enable) = 0;
// is the menu enabled?
virtual bool IsEnabledTop(size_t WXUNUSED(pos)) const { return TRUE; }
// get or change the label of the menu at given position
virtual void SetLabelTop(size_t pos, const wxString& label) = 0;
virtual wxString GetLabelTop(size_t pos) const = 0;
// item search
// -----------
// by menu and item names, returns wxNOT_FOUND if not found or id of the
// found item
virtual int FindMenuItem(const wxString& menu, const wxString& item) const;
// find item by id (in any menu), returns NULL if not found
//
// if menu is !NULL, it will be filled with wxMenu this item belongs to
virtual wxMenuItem* FindItem(int id, wxMenu **menu = NULL) const;
// find menu by its caption, return wxNOT_FOUND on failure
int FindMenu(const wxString& title) const;
// item access
// -----------
// all these functions just use FindItem() and then call an appropriate
// method on it
//
// NB: under MSW, these methods can only be used after the menubar had
// been attached to the frame
void Enable(int id, bool enable);
void Check(int id, bool check);
bool IsChecked(int id) const;
bool IsEnabled(int id) const;
void SetLabel(int id, const wxString &label);
wxString GetLabel(int id) const;
void SetHelpString(int id, const wxString& helpString);
wxString GetHelpString(int id) const;
// implementation helpers
// get the frame we are attached to (may return NULL)
wxFrame *GetFrame() const { return m_menuBarFrame; }
// returns TRUE if we're attached to a frame
bool IsAttached() const { return GetFrame() != NULL; }
// associate the menubar with the frame
virtual void Attach(wxFrame *frame);
// called before deleting the menubar normally
virtual void Detach();
// need to override these ones to avoid virtual function hiding
virtual bool Enable(bool enable = TRUE) { return wxWindow::Enable(enable); }
virtual void SetLabel(const wxString& s) { wxWindow::SetLabel(s); }
virtual wxString GetLabel() const { return wxWindow::GetLabel(); }
// don't want menu bars to accept the focus by tabbing to them
virtual bool AcceptsFocusFromKeyboard() const { return FALSE; }
// compatibility only: these functions are deprecated, use the new ones
// instead
#if WXWIN_COMPATIBILITY
bool Enabled(int id) const { return IsEnabled(id); }
bool Checked(int id) const { return IsChecked(id); }
wxMenuItem* FindMenuItemById(int id) const
{ return FindItem(id); }
wxMenuItem* FindItemForId(int id, wxMenu **menu = NULL) const
{ return FindItem(id, menu); }
#endif // WXWIN_COMPATIBILITY
protected:
// the list of all our menus
wxMenuList m_menus;
// the frame we are attached to (may be NULL)
wxFrame *m_menuBarFrame;
};
// ----------------------------------------------------------------------------
// include the real class declaration
// ----------------------------------------------------------------------------
#ifdef wxUSE_BASE_CLASSES_ONLY
#define wxMenuItem wxMenuItemBase
#else // !wxUSE_BASE_CLASSES_ONLY
#if defined(__WXUNIVERSAL__)
#include "wx/univ/menu.h"
#elif defined(__WXMSW__)
#include "wx/msw/menu.h"
#elif defined(__WXMOTIF__)
#include "wx/motif/menu.h"
#elif defined(__WXGTK__)
#include "wx/gtk/menu.h"
#elif defined(__WXMAC__)
#include "wx/mac/menu.h"
#elif defined(__WXPM__)
#include "wx/os2/menu.h"
#elif defined(__WXSTUBS__)
#include "wx/stubs/menu.h"
#endif
#endif // wxUSE_BASE_CLASSES_ONLY/!wxUSE_BASE_CLASSES_ONLY
#endif // wxUSE_MENUS
#endif
// _WX_MENU_H_BASE_