include/wx/menu.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/menu.h
   3 // Purpose:     wxMenu and wxMenuBar classes
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     26.10.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_MENU_H_BASE_
  13 #define _WX_MENU_H_BASE_
  14
  15 #include "wx/defs.h"
  16
  17 #if wxUSE_MENUS
  18
  19 // ----------------------------------------------------------------------------
  20 // headers
  21 // ----------------------------------------------------------------------------
  22
  23 #include "wx/list.h"        // for "template" list classes
  24 #include "wx/window.h"      // base class for wxMenuBar
  25
  26 // also include this one to ensure compatibility with old code which only
  27 // included wx/menu.h
  28 #include "wx/menuitem.h"
  29
  30 class WXDLLEXPORT wxMenu;
  31 class WXDLLEXPORT wxMenuBarBase;
  32 class WXDLLEXPORT wxMenuBar;
  33 class WXDLLEXPORT wxMenuItem;
  34
  35 // pseudo template list classes
  36 WX_DECLARE_EXPORTED_LIST(wxMenu, wxMenuList);
  37 WX_DECLARE_EXPORTED_LIST(wxMenuItem, wxMenuItemList);
  38
  39 // ----------------------------------------------------------------------------
  40 // wxMenu
  41 // ----------------------------------------------------------------------------
  42
  43 class WXDLLEXPORT wxMenuBase : public wxEvtHandler
  44 {
  45 public:
  46     // create a menu
  47     static wxMenu *New(const wxString& title = wxEmptyString, long style = 0);
  48
  49     // ctors
  50     wxMenuBase(const wxString& title, long style = 0) : m_title(title)
  51         { Init(style); }
  52     wxMenuBase(long style = 0)
  53         { Init(style); }
  54
  55     // dtor deletes all the menu items we own
  56     virtual ~wxMenuBase();
  57
  58     // menu construction
  59     // -----------------
  60
  61     // append any kind of item (normal/check/radio/separator)
  62     wxMenuItem* Append(int itemid,
  63                        const wxString& text,
  64                        const wxString& help = wxEmptyString,
  65                        wxItemKind kind = wxITEM_NORMAL)
  66     {
  67         return DoAppend(wxMenuItem::New((wxMenu *)this, itemid, text, help, kind));
  68     }
  69
  70     // append a separator to the menu
  71     wxMenuItem* AppendSeparator() { return Append(wxID_SEPARATOR, wxEmptyString); }
  72
  73     // append a check item
  74     wxMenuItem* AppendCheckItem(int itemid,
  75                                 const wxString& text,
  76                                 const wxString& help = wxEmptyString)
  77     {
  78         return Append(itemid, text, help, wxITEM_CHECK);
  79     }
  80
  81     // append a radio item
  82     wxMenuItem* AppendRadioItem(int itemid,
  83                                 const wxString& text,
  84                                 const wxString& help = wxEmptyString)
  85     {
  86         return Append(itemid, text, help, wxITEM_RADIO);
  87     }
  88
  89     // append a submenu
  90     wxMenuItem* AppendSubMenu(wxMenu *submenu,
  91                               const wxString& text,
  92                               const wxString& help = wxEmptyString)
  93     {
  94         return DoAppend(wxMenuItem::New((wxMenu *)this, wxID_ANY, text, help,
  95                                         wxITEM_NORMAL, submenu));
  96     }
  97
  98     // the most generic form of Append() - append anything
  99     wxMenuItem* Append(wxMenuItem *item) { return DoAppend(item); }
 100
 101     // insert a break in the menu (only works when appending the items, not
 102     // inserting them)
 103     virtual void Break() { }
 104
 105     // insert an item before given position
 106     wxMenuItem* Insert(size_t pos, wxMenuItem *item);
 107
 108     // insert an item before given position
 109     wxMenuItem* Insert(size_t pos,
 110                        int itemid,
 111                        const wxString& text,
 112                        const wxString& help = wxEmptyString,
 113                        wxItemKind kind = wxITEM_NORMAL)
 114     {
 115         return Insert(pos, wxMenuItem::New((wxMenu *)this, itemid, text, help, kind));
 116     }
 117
 118     // insert a separator
 119     wxMenuItem* InsertSeparator(size_t pos)
 120     {
 121         return Insert(pos, wxMenuItem::New((wxMenu *)this, wxID_SEPARATOR));
 122     }
 123
 124     // insert a check item
 125     wxMenuItem* InsertCheckItem(size_t pos,
 126                                 int itemid,
 127                                 const wxString& text,
 128                                 const wxString& help = wxEmptyString)
 129     {
 130         return Insert(pos, itemid, text, help, wxITEM_CHECK);
 131     }
 132
 133     // insert a radio item
 134      wxMenuItem* InsertRadioItem(size_t pos,
 135                                  int itemid,
 136                                  const wxString& text,
 137                                  const wxString& help = wxEmptyString)
 138     {
 139         return Insert(pos, itemid, text, help, wxITEM_RADIO);
 140     }
 141
 142     // insert a submenu
 143     wxMenuItem* Insert(size_t pos,
 144                        int itemid,
 145                        const wxString& text,
 146                        wxMenu *submenu,
 147                        const wxString& help = wxEmptyString)
 148     {
 149         return Insert(pos, wxMenuItem::New((wxMenu *)this, itemid, text, help,
 150                                            wxITEM_NORMAL, submenu));
 151     }
 152
 153     // prepend an item to the menu
 154     wxMenuItem* Prepend(wxMenuItem *item)
 155     {
 156         return Insert(0u, item);
 157     }
 158
 159     // prepend any item to the menu
 160     wxMenuItem* Prepend(int itemid,
 161                         const wxString& text,
 162                         const wxString& help = wxEmptyString,
 163                         wxItemKind kind = wxITEM_NORMAL)
 164     {
 165         return Insert(0u, itemid, text, help, kind);
 166     }
 167
 168     // prepend a separator
 169     wxMenuItem* PrependSeparator()
 170     {
 171         return InsertSeparator(0u);
 172     }
 173
 174     // prepend a check item
 175     wxMenuItem* PrependCheckItem(int itemid,
 176                                  const wxString& text,
 177                                  const wxString& help = wxEmptyString)
 178     {
 179         return InsertCheckItem(0u, itemid, text, help);
 180     }
 181
 182     // prepend a radio item
 183     wxMenuItem* PrependRadioItem(int itemid,
 184                                  const wxString& text,
 185                                  const wxString& help = wxEmptyString)
 186     {
 187         return InsertRadioItem(0u, itemid, text, help);
 188     }
 189
 190     // prepend a submenu
 191     wxMenuItem* Prepend(int itemid,
 192                         const wxString& text,
 193                         wxMenu *submenu,
 194                         const wxString& help = wxEmptyString)
 195     {
 196         return Insert(0u, itemid, text, submenu, help);
 197     }
 198
 199     // detach an item from the menu, but don't delete it so that it can be
 200     // added back later (but if it's not, the caller is responsible for
 201     // deleting it!)
 202     wxMenuItem *Remove(int itemid) { return Remove(FindChildItem(itemid)); }
 203     wxMenuItem *Remove(wxMenuItem *item);
 204
 205     // delete an item from the menu (submenus are not destroyed by this
 206     // function, see Destroy)
 207     bool Delete(int itemid) { return Delete(FindChildItem(itemid)); }
 208     bool Delete(wxMenuItem *item);
 209
 210     // delete the item from menu and destroy it (if it's a submenu)
 211     bool Destroy(int itemid) { return Destroy(FindChildItem(itemid)); }
 212     bool Destroy(wxMenuItem *item);
 213
 214     // menu items access
 215     // -----------------
 216
 217     // get the items
 218     size_t GetMenuItemCount() const { return m_items.GetCount(); }
 219
 220     const wxMenuItemList& GetMenuItems() const { return m_items; }
 221     wxMenuItemList& GetMenuItems() { return m_items; }
 222
 223     // search
 224     virtual int FindItem(const wxString& item) const;
 225     wxMenuItem* FindItem(int itemid, wxMenu **menu = NULL) const;
 226
 227     // find by position
 228     wxMenuItem* FindItemByPosition(size_t position) const;
 229
 230     // get/set items attributes
 231     void Enable(int itemid, bool enable);
 232     bool IsEnabled(int itemid) const;
 233
 234     void Check(int itemid, bool check);
 235     bool IsChecked(int itemid) const;
 236
 237     void SetLabel(int itemid, const wxString& label);
 238     wxString GetLabel(int itemid) const;
 239
 240     virtual void SetHelpString(int itemid, const wxString& helpString);
 241     virtual wxString GetHelpString(int itemid) const;
 242
 243     // misc accessors
 244     // --------------
 245
 246     // the title
 247     virtual void SetTitle(const wxString& title) { m_title = title; }
 248     const wxString GetTitle() const { return m_title; }
 249
 250     // event handler
 251     void SetEventHandler(wxEvtHandler *handler) { m_eventHandler = handler; }
 252     wxEvtHandler *GetEventHandler() const { return m_eventHandler; }
 253
 254     // invoking window
 255     void SetInvokingWindow(wxWindow *win) { m_invokingWindow = win; }
 256     wxWindow *GetInvokingWindow() const { return m_invokingWindow; }
 257
 258     // style
 259     long GetStyle() const { return m_style; }
 260
 261     // implementation helpers
 262     // ----------------------
 263
 264     // Updates the UI for a menu and all submenus recursively. source is the
 265     // object that has the update event handlers defined for it. If NULL, the
 266     // menu or associated window will be used.
 267     void UpdateUI(wxEvtHandler* source = (wxEvtHandler*)NULL);
 268
 269     // get the menu bar this menu is attached to (may be NULL, always NULL for
 270     // popup menus).  Traverse up the menu hierarchy to find it.
 271     wxMenuBar *GetMenuBar() const;
 272
 273     // called when the menu is attached/detached to/from a menu bar
 274     virtual void Attach(wxMenuBarBase *menubar);
 275     virtual void Detach();
 276
 277     // is the menu attached to a menu bar (or is it a popup one)?
 278     bool IsAttached() const { return GetMenuBar() != NULL; }
 279
 280     // set/get the parent of this menu
 281     void SetParent(wxMenu *parent) { m_menuParent = parent; }
 282     wxMenu *GetParent() const { return m_menuParent; }
 283
 284     // implementation only from now on
 285     // -------------------------------
 286
 287     // unlike FindItem(), this function doesn't recurse but only looks through
 288     // our direct children and also may return the index of the found child if
 289     // pos != NULL
 290     wxMenuItem *FindChildItem(int itemid, size_t *pos = NULL) const;
 291
 292     // called to generate a wxCommandEvent, return true if it was processed,
 293     // false otherwise
 294     //
 295     // the checked parameter may have boolean value or -1 for uncheckable items
 296     bool SendEvent(int itemid, int checked = -1);
 297
 298     // compatibility: these functions are deprecated, use the new ones instead
 299     // -----------------------------------------------------------------------
 300
 301     // use the versions taking wxItem_XXX now instead, they're more readable
 302     // and allow adding the radio items as well
 303     void Append(int itemid,
 304                 const wxString& text,
 305                 const wxString& help,
 306                 bool isCheckable)
 307     {
 308         Append(itemid, text, help, isCheckable ? wxITEM_CHECK : wxITEM_NORMAL);
 309     }
 310
 311     // use more readable and not requiring unused itemid AppendSubMenu() instead
 312     wxMenuItem* Append(int itemid,
 313                        const wxString& text,
 314                        wxMenu *submenu,
 315                        const wxString& help = wxEmptyString)
 316     {
 317         return DoAppend(wxMenuItem::New((wxMenu *)this, itemid, text, help,
 318                                         wxITEM_NORMAL, submenu));
 319     }
 320
 321     void Insert(size_t pos,
 322                 int itemid,
 323                 const wxString& text,
 324                 const wxString& help,
 325                 bool isCheckable)
 326     {
 327         Insert(pos, itemid, text, help, isCheckable ? wxITEM_CHECK : wxITEM_NORMAL);
 328     }
 329
 330     void Prepend(int itemid,
 331                  const wxString& text,
 332                  const wxString& help,
 333                  bool isCheckable)
 334     {
 335         Insert(0u, itemid, text, help, isCheckable);
 336     }
 337
 338     static void LockAccels(bool locked)
 339     {
 340         ms_locked = locked;
 341     }
 342
 343 protected:
 344     // virtuals to override in derived classes
 345     // ---------------------------------------
 346
 347     virtual wxMenuItem* DoAppend(wxMenuItem *item);
 348     virtual wxMenuItem* DoInsert(size_t pos, wxMenuItem *item);
 349
 350     virtual wxMenuItem *DoRemove(wxMenuItem *item);
 351     virtual bool DoDelete(wxMenuItem *item);
 352     virtual bool DoDestroy(wxMenuItem *item);
 353
 354     // helpers
 355     // -------
 356
 357     // common part of all ctors
 358     void Init(long style);
 359
 360     // associate the submenu with this menu
 361     void AddSubMenu(wxMenu *submenu);
 362
 363     wxMenuBar     *m_menuBar;           // menubar we belong to or NULL
 364     wxMenu        *m_menuParent;        // parent menu or NULL
 365
 366     wxString       m_title;             // the menu title or label
 367     wxMenuItemList m_items;             // the list of menu items
 368
 369     wxWindow      *m_invokingWindow;    // for popup menus
 370
 371     long           m_style;             // combination of wxMENU_XXX flags
 372
 373     wxEvtHandler  *m_eventHandler;      // a pluggable in event handler
 374
 375     static bool      ms_locked;
 376
 377     DECLARE_NO_COPY_CLASS(wxMenuBase)
 378 };
 379
 380 // ----------------------------------------------------------------------------
 381 // wxMenuBar
 382 // ----------------------------------------------------------------------------
 383
 384 class WXDLLEXPORT wxMenuBarBase : public wxWindow
 385 {
 386 public:
 387     // default ctor
 388     wxMenuBarBase();
 389
 390     // dtor will delete all menus we own
 391     virtual ~wxMenuBarBase();
 392
 393     // menu bar construction
 394     // ---------------------
 395
 396     // append a menu to the end of menubar, return true if ok
 397     virtual bool Append(wxMenu *menu, const wxString& title);
 398
 399     // insert a menu before the given position into the menubar, return true
 400     // if inserted ok
 401     virtual bool Insert(size_t pos, wxMenu *menu, const wxString& title);
 402
 403     // menu bar items access
 404     // ---------------------
 405
 406     // get the number of menus in the menu bar
 407     size_t GetMenuCount() const { return m_menus.GetCount(); }
 408
 409     // get the menu at given position
 410     wxMenu *GetMenu(size_t pos) const;
 411
 412     // replace the menu at given position with another one, returns the
 413     // previous menu (which should be deleted by the caller)
 414     virtual wxMenu *Replace(size_t pos, wxMenu *menu, const wxString& title);
 415
 416     // delete the menu at given position from the menu bar, return the pointer
 417     // to the menu (which should be  deleted by the caller)
 418     virtual wxMenu *Remove(size_t pos);
 419
 420     // enable or disable a submenu
 421     virtual void EnableTop(size_t pos, bool enable) = 0;
 422
 423     // is the menu enabled?
 424     virtual bool IsEnabledTop(size_t WXUNUSED(pos)) const { return true; }
 425
 426     // get or change the label of the menu at given position
 427     virtual void SetLabelTop(size_t pos, const wxString& label) = 0;
 428     virtual wxString GetLabelTop(size_t pos) const = 0;
 429
 430     // item search
 431     // -----------
 432
 433     // by menu and item names, returns wxNOT_FOUND if not found or id of the
 434     // found item
 435     virtual int FindMenuItem(const wxString& menu, const wxString& item) const;
 436
 437     // find item by id (in any menu), returns NULL if not found
 438     //
 439     // if menu is !NULL, it will be filled with wxMenu this item belongs to
 440     virtual wxMenuItem* FindItem(int itemid, wxMenu **menu = NULL) const;
 441
 442     // find menu by its caption, return wxNOT_FOUND on failure
 443     int FindMenu(const wxString& title) const;
 444
 445     // item access
 446     // -----------
 447
 448     // all these functions just use FindItem() and then call an appropriate
 449     // method on it
 450     //
 451     // NB: under MSW, these methods can only be used after the menubar had
 452     //     been attached to the frame
 453
 454     void Enable(int itemid, bool enable);
 455     void Check(int itemid, bool check);
 456     bool IsChecked(int itemid) const;
 457     bool IsEnabled(int itemid) const;
 458     virtual bool IsEnabled() const { return wxWindow::IsEnabled(); }
 459
 460     void SetLabel(int itemid, const wxString &label);
 461     wxString GetLabel(int itemid) const;
 462
 463     void SetHelpString(int itemid, const wxString& helpString);
 464     wxString GetHelpString(int itemid) const;
 465
 466     // implementation helpers
 467
 468     // get the frame we are attached to (may return NULL)
 469     wxFrame *GetFrame() const { return m_menuBarFrame; }
 470
 471     // returns true if we're attached to a frame
 472     bool IsAttached() const { return GetFrame() != NULL; }
 473
 474     // associate the menubar with the frame
 475     virtual void Attach(wxFrame *frame);
 476
 477     // called before deleting the menubar normally
 478     virtual void Detach();
 479
 480     // need to override these ones to avoid virtual function hiding
 481     virtual bool Enable(bool enable = true) { return wxWindow::Enable(enable); }
 482     virtual void SetLabel(const wxString& s) { wxWindow::SetLabel(s); }
 483     virtual wxString GetLabel() const { return wxWindow::GetLabel(); }
 484
 485     // don't want menu bars to accept the focus by tabbing to them
 486     virtual bool AcceptsFocusFromKeyboard() const { return false; }
 487
 488     // update all menu item states in all menus
 489     virtual void UpdateMenus();
 490
 491 protected:
 492     // the list of all our menus
 493     wxMenuList m_menus;
 494
 495     // the frame we are attached to (may be NULL)
 496     wxFrame *m_menuBarFrame;
 497
 498     DECLARE_NO_COPY_CLASS(wxMenuBarBase)
 499 };
 500
 501 // ----------------------------------------------------------------------------
 502 // include the real class declaration
 503 // ----------------------------------------------------------------------------
 504
 505 #ifdef wxUSE_BASE_CLASSES_ONLY
 506     #define wxMenuItem wxMenuItemBase
 507 #else // !wxUSE_BASE_CLASSES_ONLY
 508 #if defined(__WXUNIVERSAL__)
 509     #include "wx/univ/menu.h"
 510 #elif defined(__WXPALMOS__)
 511     #include "wx/palmos/menu.h"
 512 #elif defined(__WXMSW__)
 513     #include "wx/msw/menu.h"
 514 #elif defined(__WXMOTIF__)
 515     #include "wx/motif/menu.h"
 516 #elif defined(__WXGTK20__)
 517     #include "wx/gtk/menu.h"
 518 #elif defined(__WXGTK__)
 519     #include "wx/gtk1/menu.h"
 520 #elif defined(__WXMAC__)
 521     #include "wx/mac/menu.h"
 522 #elif defined(__WXCOCOA__)
 523     #include "wx/cocoa/menu.h"
 524 #elif defined(__WXPM__)
 525     #include "wx/os2/menu.h"
 526 #endif
 527 #endif // wxUSE_BASE_CLASSES_ONLY/!wxUSE_BASE_CLASSES_ONLY
 528
 529 #endif // wxUSE_MENUS
 530
 531 #endif
 532     // _WX_MENU_H_BASE_