src/msw/menu.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        menu.cpp
   3 // Purpose:     wxMenu, wxMenuBar, wxMenuItem
   4 // Author:      Julian Smart
   5 // Modified by: Vadim Zeitlin
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "menu.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include "wx/frame.h"
  25 #include "wx/menu.h"
  26 #include "wx/utils.h"
  27 #endif
  28
  29 #if wxUSE_OWNER_DRAWN
  30   #include "wx/ownerdrw.h"
  31 #endif
  32
  33 #include "wx/msw/private.h"
  34 #include "wx/msw/menu.h"
  35 #include "wx/menuitem.h"
  36 #include "wx/log.h"
  37
  38 // other standard headers
  39 // ----------------------
  40 #include <string.h>
  41
  42 // ----------------------------------------------------------------------------
  43 // constants
  44 // ----------------------------------------------------------------------------
  45
  46 // the (popup) menu title has this special id
  47 static const int idMenuTitle = -2;
  48
  49 // ----------------------------------------------------------------------------
  50 // wxWindows macros
  51 // ----------------------------------------------------------------------------
  52 #if !USE_SHARED_LIBRARY
  53   IMPLEMENT_DYNAMIC_CLASS(wxMenu, wxEvtHandler)
  54   IMPLEMENT_DYNAMIC_CLASS(wxMenuBar, wxEvtHandler)
  55 #endif
  56
  57 // ============================================================================
  58 // implementation
  59 // ============================================================================
  60
  61 // Menus
  62
  63 // Construct a menu with optional title (then use append)
  64 wxMenu::wxMenu(const wxString& Title, const wxFunction func)
  65 {
  66   m_title = Title;
  67   m_parent = NULL;
  68   m_eventHandler = this;
  69   m_pInvokingWindow = NULL;
  70   m_doBreak = FALSE ;
  71   m_noItems = 0;
  72   m_menuBar = NULL;
  73   m_hMenu = (WXHMENU) CreatePopupMenu();
  74   m_savehMenu = 0 ;
  75   m_topLevelMenu = this;
  76   m_clientData = (void*) NULL;
  77
  78   if (m_title != "")
  79   {
  80     Append(idMenuTitle, m_title) ;
  81     AppendSeparator() ;
  82   }
  83
  84   Callback(func);
  85 }
  86
  87 // The wxWindow destructor will take care of deleting the submenus.
  88 wxMenu::~wxMenu()
  89 {
  90   if (m_hMenu)
  91     DestroyMenu((HMENU) m_hMenu);
  92   m_hMenu = 0;
  93
  94   // Windows seems really bad on Menu de-allocation...
  95   // After many try, here is what I do: RemoveMenu() will ensure
  96   // that popup are "disconnected" from their parent; then call
  97   // delete method on each child (which in turn do a recursive job),
  98   // and finally, DestroyMenu()
  99   //
 100   // With that, BoundCheckers is happy, and no complaints...
 101 /*
 102   int N = 0 ;
 103   if (m_hMenu)
 104     N = GetMenuItemCount(m_hMenu);
 105   int i;
 106   for (i = N-1; i >= 0; i--)
 107     RemoveMenu(m_hMenu, i, MF_BYPOSITION);
 108 */
 109
 110   // How is deleting submenus in this loop any different from deleting
 111   // the submenus in the children list, via ~wxWindow ?
 112   // I'll reinstate this deletion for now and remove addition
 113   // from children list (which doesn't exist now)
 114   // Julian 1/3/97
 115   wxNode *node = m_menuItems.First();
 116   while (node)
 117   {
 118     wxMenuItem *item = (wxMenuItem *)node->Data();
 119
 120     // Delete child menus.
 121     // Beware: they must not be appended to children list!!!
 122     // (because order of delete is significant)
 123     if (item->GetSubMenu())
 124       item->DeleteSubMenu();
 125
 126     wxNode *next = node->Next();
 127     delete item;
 128     delete node;
 129     node = next;
 130   }
 131 /*
 132   if (m_hMenu)
 133     DestroyMenu(m_hMenu);
 134   m_hMenu = 0;
 135 */
 136 }
 137
 138 void wxMenu::Break()
 139 {
 140   m_doBreak = TRUE ;
 141 }
 142
 143 // function appends a new item or submenu to the menu
 144 void wxMenu::Append(wxMenuItem *pItem)
 145 {
 146   wxCHECK_RET( pItem != NULL, "can't append NULL item to the menu" );
 147
 148   m_menuItems.Append(pItem);
 149
 150   UINT  flags = 0;
 151
 152   if ( m_doBreak ) {
 153     flags |= MF_MENUBREAK;
 154     m_doBreak = FALSE;
 155   }
 156
 157   if ( pItem->IsSeparator() ) {
 158     flags |= MF_SEPARATOR;
 159   }
 160
 161   // id is the numeric id for normal menu items and HMENU for submenus
 162   UINT id;
 163   wxMenu *SubMenu = pItem->GetSubMenu();
 164   if ( SubMenu != NULL ) {
 165     wxASSERT( SubMenu->m_hMenu != (WXHMENU) NULL );
 166
 167     id = (UINT)SubMenu->m_hMenu;
 168
 169     SubMenu->m_topLevelMenu = m_topLevelMenu;
 170     SubMenu->m_parent       = this;
 171     SubMenu->m_savehMenu    = (WXHMENU)id;
 172     SubMenu->m_hMenu        = 0;
 173
 174     flags |= MF_POPUP;
 175   }
 176   else {
 177     id = pItem->GetId();
 178   }
 179
 180   LPCSTR pData;
 181
 182 #if wxUSE_OWNER_DRAWN
 183   if ( pItem->IsOwnerDrawn() ) {  // want to get {Measure|Draw}Item messages?
 184     // item draws itself, pass pointer to it in data parameter
 185     flags |= MF_OWNERDRAW;
 186     pData = (LPCSTR)pItem;
 187   }
 188   else
 189 #endif
 190   {
 191     // menu is just a normal string (passed in data parameter)
 192     flags |= MF_STRING;
 193     pData = pItem->GetName();
 194   }
 195
 196   // visually select the menu title
 197   if ( id == idMenuTitle )
 198   {
 199     // TODO use SetMenuItemInfo(MFS_DEFAULT) to put it in bold face
 200   }
 201
 202   HMENU hMenu = (HMENU)((m_hMenu == 0) ? m_savehMenu : m_hMenu);
 203   if ( !AppendMenu(hMenu, flags, id, pData) )
 204   {
 205     wxLogLastError("AppendMenu");
 206   }
 207
 208   m_noItems++;
 209 }
 210
 211 void wxMenu::AppendSeparator()
 212 {
 213   Append(new wxMenuItem(this, ID_SEPARATOR));
 214 }
 215
 216 // Pullright item
 217 void wxMenu::Append(int Id, const wxString& label, wxMenu *SubMenu,
 218                     const wxString& helpString)
 219 {
 220   Append(new wxMenuItem(this, Id, label, helpString, FALSE, SubMenu));
 221 }
 222
 223 // Ordinary menu item
 224 void wxMenu::Append(int Id, const wxString& label,
 225                     const wxString& helpString, bool checkable)
 226 {
 227   // 'checkable' parameter is useless for Windows.
 228   Append(new wxMenuItem(this, Id, label, helpString, checkable));
 229 }
 230
 231 void wxMenu::Delete(int id)
 232 {
 233   wxNode *node;
 234   int pos;
 235   HMENU menu;
 236
 237   wxMenuItem *item = NULL;
 238   for (pos = 0, node = m_menuItems.First(); node; node = node->Next(), pos++) {
 239          item = (wxMenuItem *)node->Data();
 240          if (item->GetId() == id)
 241                 break;
 242   }
 243
 244   if (!node)
 245         return;
 246
 247   menu = (HMENU)(m_hMenu ? m_hMenu : m_savehMenu);
 248
 249   wxMenu *pSubMenu = item->GetSubMenu();
 250   if ( pSubMenu != NULL ) {
 251     RemoveMenu(menu, (UINT)pos, MF_BYPOSITION);
 252     pSubMenu->m_hMenu = pSubMenu->m_savehMenu;
 253     pSubMenu->m_savehMenu = 0;
 254     pSubMenu->m_parent = NULL;
 255     //     RemoveChild(item->subMenu);
 256     pSubMenu->m_topLevelMenu = NULL;
 257     // TODO: Why isn't subMenu deleted here???
 258     // Will put this in for now. Assuming this is supposed
 259     // to delete the menu, not just remove it.
 260     item->DeleteSubMenu();
 261   }
 262   else {
 263     DeleteMenu(menu, (UINT)pos, MF_BYPOSITION);
 264   }
 265
 266   m_menuItems.DeleteNode(node);
 267   delete item;
 268 }
 269
 270 void wxMenu::Enable(int Id, bool Flag)
 271 {
 272   wxMenuItem *item = FindItemForId(Id);
 273   wxCHECK_RET( item != NULL, "can't enable non-existing menu item" );
 274
 275   item->Enable(Flag);
 276 }
 277
 278 bool wxMenu::Enabled(int Id) const
 279 {
 280   wxMenuItem *item = FindItemForId(Id);
 281   wxCHECK( item != NULL, FALSE );
 282
 283   return item->IsEnabled();
 284 }
 285
 286 void wxMenu::Check(int Id, bool Flag)
 287 {
 288   wxMenuItem *item = FindItemForId(Id);
 289   wxCHECK_RET( item != NULL, "can't get status of non-existing menu item" );
 290
 291   item->Check(Flag);
 292 }
 293
 294 bool wxMenu::Checked(int Id) const
 295 {
 296   wxMenuItem *item = FindItemForId(Id);
 297   wxCHECK( item != NULL, FALSE );
 298
 299   return item->IsChecked();
 300 }
 301
 302 void wxMenu::SetTitle(const wxString& label)
 303 {
 304   bool hasNoTitle = m_title.IsEmpty();
 305   m_title = label;
 306
 307   HMENU hMenu = (HMENU)((m_hMenu == 0) ? m_savehMenu : m_hMenu);
 308
 309   if ( hasNoTitle )
 310   {
 311     if ( !label.IsEmpty() )
 312     {
 313       if ( !InsertMenu(hMenu, 0u, MF_BYPOSITION | MF_STRING,
 314                        (unsigned)idMenuTitle, m_title) ||
 315            !InsertMenu(hMenu, 1u, MF_BYPOSITION, (unsigned)-1, NULL) )
 316       {
 317         wxLogLastError("InsertMenu");
 318       }
 319     }
 320   }
 321   else
 322   {
 323     if ( label.IsEmpty() )
 324     {
 325       // remove the title and the separator after it
 326       if ( !RemoveMenu(hMenu, 0, MF_BYPOSITION) ||
 327            !RemoveMenu(hMenu, 0, MF_BYPOSITION) )
 328       {
 329         wxLogLastError("RemoveMenu");
 330       }
 331     }
 332     else
 333     {
 334       // modify the title
 335       if ( !ModifyMenu(hMenu, 0u,
 336                        MF_BYPOSITION | MF_STRING,
 337                        (unsigned)idMenuTitle, m_title) )
 338       {
 339         wxLogLastError("ModifyMenu");
 340       }
 341     }
 342   }
 343
 344   // TODO use SetMenuItemInfo(MFS_DEFAULT) to put it in bold face
 345 }
 346
 347 const wxString wxMenu::GetTitle() const
 348 {
 349    return m_title;
 350 }
 351
 352 void wxMenu::SetLabel(int Id, const wxString& label)
 353 {
 354   wxMenuItem *item = FindItemForId(Id) ;
 355   if (item==NULL)
 356     return;
 357
 358   if (item->GetSubMenu()==NULL)
 359   {
 360     if (m_hMenu)
 361     {
 362       UINT was_flag = GetMenuState((HMENU)m_hMenu,Id,MF_BYCOMMAND) ;
 363       ModifyMenu((HMENU)m_hMenu,Id,MF_BYCOMMAND|MF_STRING|was_flag,Id,(const char *)label) ;
 364     }
 365     else if (m_savehMenu)
 366     {
 367       UINT was_flag = GetMenuState((HMENU)m_savehMenu,Id,MF_BYCOMMAND) ;
 368       ModifyMenu((HMENU)m_savehMenu,Id,MF_BYCOMMAND|MF_STRING|was_flag,Id,(const char *)label) ;
 369     }
 370   }
 371   else
 372   {
 373     wxMenu *father = item->GetSubMenu()->m_topLevelMenu ;
 374     wxNode *node = father->m_menuItems.First() ;
 375     int i = 0 ;
 376     while (node)
 377     {
 378       wxMenuItem *matched = (wxMenuItem*)node->Data() ;
 379       if (matched==item)
 380         break ;
 381       i++ ;
 382       node = node->Next() ;
 383     }
 384     // Here, we have the position.
 385     ModifyMenu((HMENU)father->m_savehMenu,i,
 386                MF_BYPOSITION|MF_STRING|MF_POPUP,
 387                (UINT)item->GetSubMenu()->m_savehMenu,(const char *)label) ;
 388   }
 389   item->SetName(label);
 390 }
 391
 392 wxString wxMenu::GetLabel(int id) const
 393 {
 394 /*
 395   static char tmp[128] ;
 396   int len;
 397   if (m_hMenu)
 398     len = GetMenuString((HMENU)m_hMenu,Id,tmp,WXSIZEOF(tmp) - 1,MF_BYCOMMAND);
 399   else if (m_savehMenu)
 400     len = GetMenuString((HMENU)m_savehMenu,Id,tmp,WXSIZEOF(tmp) - 1,MF_BYCOMMAND);
 401   else
 402     len = 0 ;
 403   tmp[len] = '\0' ;
 404   return wxString(tmp) ;
 405
 406 */
 407     wxMenuItem *pItem = FindItemForId(id) ;
 408     if (pItem)
 409         return pItem->GetName() ;
 410     else
 411         return wxEmptyString;
 412 }
 413
 414 bool wxMenu::MSWCommand(WXUINT WXUNUSED(param), WXWORD id)
 415 {
 416   wxCommandEvent event(wxEVT_COMMAND_MENU_SELECTED);
 417   event.SetEventObject( this );
 418   event.SetId( id );
 419   event.SetInt( id );
 420   ProcessCommand(event);
 421   return TRUE;
 422 }
 423
 424 // Finds the item id matching the given string, -1 if not found.
 425 int wxMenu::FindItem (const wxString& itemString) const
 426 {
 427   char buf1[200];
 428   char buf2[200];
 429   wxStripMenuCodes ((char *)(const char *)itemString, buf1);
 430
 431   for (wxNode * node = m_menuItems.First (); node; node = node->Next ())
 432     {
 433       wxMenuItem *item = (wxMenuItem *) node->Data ();
 434       if (item->GetSubMenu())
 435       {
 436         int ans = item->GetSubMenu()->FindItem(itemString);
 437         if (ans > -1)
 438           return ans;
 439       }
 440       if ( !item->IsSeparator() )
 441       {
 442         wxStripMenuCodes((char *)item->GetName().c_str(), buf2);
 443         if (strcmp(buf1, buf2) == 0)
 444           return item->GetId();
 445       }
 446     }
 447
 448   return -1;
 449 }
 450
 451 wxMenuItem *wxMenu::FindItemForId(int itemId, wxMenu ** itemMenu) const
 452 {
 453   if (itemMenu)
 454     *itemMenu = NULL;
 455   for (wxNode * node = m_menuItems.First (); node; node = node->Next ())
 456   {
 457     wxMenuItem *item = (wxMenuItem *) node->Data ();
 458
 459     if (item->GetId() == itemId)
 460     {
 461       if (itemMenu)
 462         *itemMenu = (wxMenu *) this;
 463       return item;
 464     }
 465
 466     if (item->GetSubMenu())
 467     {
 468       wxMenuItem *ans = item->GetSubMenu()->FindItemForId (itemId, itemMenu);
 469       if (ans)
 470         return ans;
 471     }
 472   }
 473
 474   if (itemMenu)
 475     *itemMenu = NULL;
 476   return NULL;
 477 }
 478
 479 void wxMenu::SetHelpString(int itemId, const wxString& helpString)
 480 {
 481   wxMenuItem *item = FindItemForId (itemId);
 482   if (item)
 483     item->SetHelp(helpString);
 484 }
 485
 486 wxString wxMenu::GetHelpString (int itemId) const
 487 {
 488   wxMenuItem *item = FindItemForId (itemId);
 489   if (item)
 490     return item->GetHelp();
 491   else
 492     return wxEmptyString;
 493 }
 494
 495 void wxMenu::ProcessCommand(wxCommandEvent & event)
 496 {
 497   bool processed = FALSE;
 498
 499   // Try a callback
 500   if (m_callback)
 501   {
 502       (void)(*(m_callback))(*this, event);
 503       processed = TRUE;
 504   }
 505
 506   // Try the menu's event handler
 507   if ( !processed && GetEventHandler())
 508   {
 509       processed = GetEventHandler()->ProcessEvent(event);
 510   }
 511
 512   // Try the window the menu was popped up from (and up
 513   // through the hierarchy)
 514   if ( !processed && GetInvokingWindow())
 515     processed = GetInvokingWindow()->GetEventHandler()->ProcessEvent(event);
 516 }
 517
 518 extern wxMenu *wxCurrentPopupMenu;
 519 bool wxWindow::PopupMenu(wxMenu *menu, int x, int y)
 520 {
 521   menu->SetInvokingWindow(this);
 522   menu->UpdateUI();
 523
 524   HWND hWnd = (HWND) GetHWND();
 525   HMENU hMenu = (HMENU)menu->m_hMenu;
 526   POINT point;
 527   point.x = x;
 528   point.y = y;
 529   ::ClientToScreen(hWnd, &point);
 530   wxCurrentPopupMenu = menu;
 531   ::TrackPopupMenu(hMenu, TPM_RIGHTBUTTON, point.x, point.y, 0, hWnd, NULL);
 532   wxYield();
 533   wxCurrentPopupMenu = NULL;
 534
 535   menu->SetInvokingWindow(NULL);
 536
 537   return TRUE;
 538 }
 539
 540 // Menu Bar
 541 wxMenuBar::wxMenuBar()
 542 {
 543   m_eventHandler = this;
 544
 545   m_menuCount = 0;
 546   m_menus = NULL;
 547   m_titles = NULL;
 548   m_menuBarFrame = NULL;
 549   m_hMenu = 0;
 550 }
 551
 552 wxMenuBar::wxMenuBar(int N, wxMenu *Menus[], const wxString Titles[])
 553 {
 554   m_eventHandler = this;
 555   m_menuCount = N;
 556   m_menus = Menus;
 557   m_titles = new wxString[N];
 558   int i;
 559   for ( i = 0; i < N; i++ )
 560         m_titles[i] = Titles[i];
 561   m_menuBarFrame = NULL;
 562   for (i = 0; i < N; i++)
 563     m_menus[i]->m_menuBar = (wxMenuBar *) this;
 564
 565   m_hMenu = 0;
 566 }
 567
 568 wxMenuBar::~wxMenuBar()
 569 {
 570   // In fact, don't want menu to be destroyed before MDI
 571   // shuffling has taken place. Let it be destroyed
 572   // automatically when the window is destroyed.
 573
 574 //  DestroyMenu(menu);
 575 //  m_hMenu = NULL;
 576
 577   int i;
 578 /*
 579   // See remarks in ::~wxMenu() method
 580   // BEWARE - this may interfere with MDI fixes, so
 581   // may need to remove
 582   int N = 0 ;
 583
 584   if (m_menuBarFrame && ((m_menuBarFrame->GetWindowStyleFlag() & wxSDI) == wxSDI))
 585   {
 586     if (menu)
 587       N = GetMenuItemCount(menu) ;
 588     for (i = N-1; i >= 0; i--)
 589       RemoveMenu(menu, i, MF_BYPOSITION);
 590   }
 591 */
 592   for (i = 0; i < m_menuCount; i++)
 593   {
 594     delete m_menus[i];
 595   }
 596   delete[] m_menus;
 597   delete[] m_titles;
 598
 599 /* Don't destroy menu here, in case we're MDI and
 600    need to do some shuffling with VALID menu handles.
 601   if (menu)
 602     DestroyMenu(menu);
 603   m_hMenu = 0;
 604 */
 605 }
 606
 607 // Must only be used AFTER menu has been attached to frame,
 608 // otherwise use individual menus to enable/disable items
 609 void wxMenuBar::Enable(int Id, bool Flag)
 610 {
 611   int ms_flag;
 612   if (Flag)
 613     ms_flag = MF_ENABLED;
 614   else
 615     ms_flag = MF_GRAYED;
 616
 617   wxMenu *itemMenu = NULL;
 618   wxMenuItem *item = FindItemForId(Id, &itemMenu) ;
 619   if (!item)
 620     return;
 621
 622   if (itemMenu->m_hMenu)
 623     EnableMenuItem((HMENU)itemMenu->m_hMenu, Id, MF_BYCOMMAND | ms_flag);
 624   else if (itemMenu->m_savehMenu)
 625     EnableMenuItem((HMENU)itemMenu->m_savehMenu, Id, MF_BYCOMMAND | ms_flag);
 626
 627 }
 628
 629 void wxMenuBar::EnableTop(int pos, bool flag)
 630 {
 631   int ms_flag;
 632   if (flag)
 633     ms_flag = MF_ENABLED;
 634   else
 635     ms_flag = MF_GRAYED;
 636
 637   EnableMenuItem((HMENU)m_hMenu, pos, MF_BYPOSITION | ms_flag);
 638   DrawMenuBar((HWND) m_menuBarFrame->GetHWND()) ;
 639 }
 640
 641 // Must only be used AFTER menu has been attached to frame,
 642 // otherwise use individual menus
 643 void wxMenuBar::Check(int Id, bool Flag)
 644 {
 645   wxMenu *itemMenu = NULL;
 646   wxMenuItem *item = FindItemForId(Id, &itemMenu) ;
 647   if (!item)
 648     return;
 649
 650   if (!item->IsCheckable())
 651     return ;
 652   int ms_flag;
 653   if (Flag)
 654     ms_flag = MF_CHECKED;
 655   else
 656     ms_flag = MF_UNCHECKED;
 657
 658   if (itemMenu->m_hMenu)
 659     CheckMenuItem((HMENU)itemMenu->m_hMenu, Id, MF_BYCOMMAND | ms_flag);
 660   else if (itemMenu->m_savehMenu)
 661     CheckMenuItem((HMENU)itemMenu->m_savehMenu, Id, MF_BYCOMMAND | ms_flag);
 662
 663 //  CheckMenuItem((HMENU)m_hMenu, Id, MF_BYCOMMAND | ms_flag);
 664 }
 665
 666 bool wxMenuBar::Checked(int Id) const
 667 {
 668   wxMenu *itemMenu = NULL;
 669   wxMenuItem *item = FindItemForId(Id, &itemMenu) ;
 670   if (!item)
 671     return FALSE;
 672
 673   int Flag = 0;
 674
 675   if (itemMenu->m_hMenu)
 676     Flag=GetMenuState((HMENU)itemMenu->m_hMenu, Id, MF_BYCOMMAND) ;
 677   else if (itemMenu->m_savehMenu)
 678     Flag=GetMenuState((HMENU)itemMenu->m_savehMenu, Id, MF_BYCOMMAND) ;
 679
 680 //  Flag=GetMenuState((HMENU)m_hMenu, Id, MF_BYCOMMAND) ;
 681
 682   if (Flag&MF_CHECKED)
 683     return TRUE ;
 684   else
 685     return FALSE ;
 686 }
 687
 688 bool wxMenuBar::Enabled(int Id) const
 689 {
 690   wxMenu *itemMenu = NULL;
 691   wxMenuItem *item = FindItemForId(Id, &itemMenu) ;
 692   if (!item)
 693     return FALSE;
 694
 695   int Flag ;
 696
 697   if (itemMenu->m_hMenu)
 698     Flag=GetMenuState((HMENU)itemMenu->m_hMenu, Id, MF_BYCOMMAND) ;
 699   else if (itemMenu->m_savehMenu)
 700     Flag=GetMenuState((HMENU)itemMenu->m_savehMenu, Id, MF_BYCOMMAND) ;
 701
 702   if (Flag&MF_ENABLED)
 703     return TRUE ;
 704   else
 705     return FALSE ;
 706 }
 707
 708
 709 void wxMenuBar::SetLabel(int Id, const wxString& label)
 710 {
 711   wxMenu *itemMenu = NULL;
 712   wxMenuItem *item = FindItemForId(Id, &itemMenu) ;
 713
 714   if (!item)
 715     return;
 716
 717   if (itemMenu->m_hMenu)
 718   {
 719     UINT was_flag = GetMenuState((HMENU)itemMenu->m_hMenu,Id,MF_BYCOMMAND) ;
 720     ModifyMenu((HMENU)itemMenu->m_hMenu,Id,MF_BYCOMMAND|MF_STRING|was_flag,Id,(const char *)label) ;
 721   }
 722   else if (itemMenu->m_savehMenu)
 723   {
 724     UINT was_flag = GetMenuState((HMENU)itemMenu->m_savehMenu,Id,MF_BYCOMMAND) ;
 725     ModifyMenu((HMENU)itemMenu->m_savehMenu,Id,MF_BYCOMMAND|MF_STRING|was_flag,Id,(const char *)label) ;
 726   }
 727 }
 728
 729 wxString wxMenuBar::GetLabel(int Id) const
 730 {
 731   wxMenu *itemMenu = NULL;
 732   wxMenuItem *item = FindItemForId(Id, &itemMenu) ;
 733
 734   if (!item)
 735     return wxString("");
 736
 737   static char tmp[128] ;
 738   int len = 0;
 739   if (itemMenu->m_hMenu)
 740   {
 741     len = GetMenuString((HMENU)itemMenu->m_hMenu,Id,tmp,127,MF_BYCOMMAND) ;
 742   }
 743   else if (itemMenu->m_savehMenu)
 744   {
 745     len = GetMenuString((HMENU)itemMenu->m_savehMenu,Id,tmp,127,MF_BYCOMMAND) ;
 746   }
 747
 748 //  int len = GetMenuString((HMENU)m_hMenu,Id,tmp,127,MF_BYCOMMAND) ;
 749   tmp[len] = '\0' ;
 750   return wxString(tmp) ;
 751 }
 752
 753 void wxMenuBar::SetLabelTop(int pos, const wxString& label)
 754 {
 755   UINT was_flag = GetMenuState((HMENU)m_hMenu,pos,MF_BYPOSITION) ;
 756   if (was_flag&MF_POPUP)
 757   {
 758     was_flag &= 0xff ;
 759     HMENU popup = GetSubMenu((HMENU)m_hMenu,pos) ;
 760     ModifyMenu((HMENU)m_hMenu,pos,MF_BYPOSITION|MF_STRING|was_flag,(UINT)popup,(const char *)label) ;
 761   }
 762   else
 763     ModifyMenu((HMENU)m_hMenu,pos,MF_BYPOSITION|MF_STRING|was_flag,pos,(const char *)label) ;
 764 }
 765
 766 wxString wxMenuBar::GetLabelTop(int pos) const
 767 {
 768   static char tmp[128] ;
 769   int len = GetMenuString((HMENU)m_hMenu,pos,tmp,127,MF_BYPOSITION) ;
 770   tmp[len] = '\0' ;
 771   return wxString(tmp);
 772 }
 773
 774 bool wxMenuBar::OnDelete(wxMenu *a_menu, int pos)
 775 {
 776   if (!m_menuBarFrame)
 777          return TRUE;
 778
 779   if (RemoveMenu((HMENU)m_hMenu, (UINT)pos, MF_BYPOSITION)) {
 780          m_menus[pos]->m_hMenu = m_menus[pos]->m_savehMenu;
 781          m_menus[pos]->m_savehMenu = 0;
 782
 783          if (m_menuBarFrame) {
 784                 DrawMenuBar((HWND) m_menuBarFrame->GetHWND()) ;
 785          }
 786
 787          return TRUE;
 788   }
 789
 790   return FALSE;
 791 }
 792
 793 bool wxMenuBar::OnAppend(wxMenu *a_menu, const char *title)
 794 {
 795   if (!a_menu->m_hMenu)
 796          return FALSE;
 797
 798   if (!m_menuBarFrame)
 799          return TRUE;
 800
 801   a_menu->m_savehMenu = a_menu->m_hMenu;
 802   a_menu->m_hMenu = 0;
 803
 804   AppendMenu((HMENU)m_hMenu, MF_POPUP | MF_STRING, (UINT)a_menu->m_savehMenu, title);
 805
 806   DrawMenuBar((HWND) m_menuBarFrame->GetHWND());
 807
 808   return TRUE;
 809 }
 810
 811 void wxMenuBar::Append (wxMenu * menu, const wxString& title)
 812 {
 813   if (!OnAppend(menu, title))
 814          return;
 815
 816   m_menuCount ++;
 817   wxMenu **new_menus = new wxMenu *[m_menuCount];
 818   wxString *new_titles = new wxString[m_menuCount];
 819   int i;
 820
 821   for (i = 0; i < m_menuCount - 1; i++)
 822          {
 823                 new_menus[i] = m_menus[i];
 824                 m_menus[i] = NULL;
 825                 new_titles[i] = m_titles[i];
 826                 m_titles[i] = "";
 827          }
 828   if (m_menus)
 829          {
 830                 delete[]m_menus;
 831                 delete[]m_titles;
 832          }
 833   m_menus = new_menus;
 834   m_titles = new_titles;
 835
 836   m_menus[m_menuCount - 1] = (wxMenu *)menu;
 837   m_titles[m_menuCount - 1] = title;
 838
 839   ((wxMenu *)menu)->m_menuBar = (wxMenuBar *) this;
 840   ((wxMenu *)menu)->SetParent(this);
 841 }
 842
 843 void wxMenuBar::Delete(wxMenu * menu, int i)
 844 {
 845   int j;
 846   int ii = (int) i;
 847
 848   if (menu != 0) {
 849          for (ii = 0; ii < m_menuCount; ii++) {
 850                 if (m_menus[ii] == menu)
 851         break;
 852          }
 853          if (ii >= m_menuCount)
 854                 return;
 855   } else {
 856          if (ii < 0 || ii >= m_menuCount)
 857                 return;
 858          menu = m_menus[ii];
 859   }
 860
 861   if (!OnDelete(menu, ii))
 862          return;
 863
 864   menu->SetParent(NULL);
 865
 866   -- m_menuCount;
 867   for (j = ii; j < m_menuCount; j++) {
 868          m_menus[j] = m_menus[j + 1];
 869          m_titles[j] = m_titles[j + 1];
 870   }
 871 }
 872
 873 // Find the menu menuString, item itemString, and return the item id.
 874 // Returns -1 if none found.
 875 int wxMenuBar::FindMenuItem (const wxString& menuString, const wxString& itemString) const
 876 {
 877   char buf1[200];
 878   char buf2[200];
 879   wxStripMenuCodes ((char *)(const char *)menuString, buf1);
 880   int i;
 881   for (i = 0; i < m_menuCount; i++)
 882     {
 883       wxStripMenuCodes ((char *)(const char *)m_titles[i], buf2);
 884       if (strcmp (buf1, buf2) == 0)
 885         return m_menus[i]->FindItem (itemString);
 886     }
 887   return -1;
 888 }
 889
 890 wxMenuItem *wxMenuBar::FindItemForId (int Id, wxMenu ** itemMenu) const
 891 {
 892   if (itemMenu)
 893     *itemMenu = NULL;
 894
 895   wxMenuItem *item = NULL;
 896   int i;
 897   for (i = 0; i < m_menuCount; i++)
 898   {
 899     item = m_menus[i]->FindItemForId (Id, itemMenu);
 900     if (item)
 901       return item;
 902   }
 903   return NULL;
 904 }
 905
 906 void wxMenuBar::SetHelpString (int Id, const wxString& helpString)
 907 {
 908   int i;
 909   for (i = 0; i < m_menuCount; i++)
 910     {
 911       if (m_menus[i]->FindItemForId (Id))
 912         {
 913           m_menus[i]->SetHelpString (Id, helpString);
 914           return;
 915         }
 916     }
 917 }
 918
 919 wxString wxMenuBar::GetHelpString (int Id) const
 920 {
 921   int i;
 922   for (i = 0; i < m_menuCount; i++)
 923     {
 924       if (m_menus[i]->FindItemForId (Id))
 925             return wxString(m_menus[i]->GetHelpString (Id));
 926     }
 927   return wxString("");
 928 }
 929
 930 wxWindow *wxMenu::GetWindow() const
 931 {
 932   if ( m_pInvokingWindow != NULL )
 933     return m_pInvokingWindow;
 934   if ( m_menuBar != NULL)
 935     return m_menuBar->m_menuBarFrame;
 936   return NULL;
 937 }
 938
 939 WXHMENU wxMenu::GetHMenu() const
 940 {
 941   if ( m_hMenu != 0 )
 942     return m_hMenu;
 943   else if ( m_savehMenu != 0 )
 944     return m_savehMenu;
 945
 946   return 0;
 947 }
 948
 949 // Update a menu and all submenus recursively.
 950 // source is the object that has the update event handlers
 951 // defined for it. If NULL, the menu or associated window
 952 // will be used.
 953 void wxMenu::UpdateUI(wxEvtHandler* source)
 954 {
 955   if (!source && GetInvokingWindow())
 956     source = GetInvokingWindow()->GetEventHandler();
 957   if (!source)
 958     source = GetEventHandler();
 959   if (!source)
 960     source = this;
 961
 962   wxNode* node = GetItems().First();
 963   while (node)
 964   {
 965     wxMenuItem* item = (wxMenuItem*) node->Data();
 966     if ( !item->IsSeparator() )
 967     {
 968       wxWindowID id = item->GetId();
 969       wxUpdateUIEvent event(id);
 970       event.SetEventObject( source );
 971
 972       if (source->ProcessEvent(event))
 973       {
 974         if (event.GetSetText())
 975           SetLabel(id, event.GetText());
 976         if (event.GetSetChecked())
 977           Check(id, event.GetChecked());
 978         if (event.GetSetEnabled())
 979           Enable(id, event.GetEnabled());
 980       }
 981
 982       if (item->GetSubMenu())
 983         item->GetSubMenu()->UpdateUI(source);
 984     }
 985     node = node->Next();
 986   }
 987 }