src/motif/menuitem.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        menuitem.cpp
   3 // Purpose:     wxMenuItem implementation
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 #ifdef __GNUG__
  17     #pragma implementation "menuitem.h"
  18 #endif
  19
  20 // ----------------------------------------------------------------------------
  21 // headers
  22 // ----------------------------------------------------------------------------
  23
  24 #include "wx/defs.h"
  25
  26 #include "wx/menu.h"
  27 #include "wx/menuitem.h"
  28 #include "wx/utils.h"
  29 #include "wx/frame.h"
  30
  31 #ifdef __VMS__
  32 #pragma message disable nosimpint
  33 #endif
  34 #include <Xm/Label.h>
  35 #include <Xm/LabelG.h>
  36 #include <Xm/CascadeBG.h>
  37 #include <Xm/CascadeB.h>
  38 #include <Xm/SeparatoG.h>
  39 #include <Xm/PushBG.h>
  40 #include <Xm/ToggleB.h>
  41 #include <Xm/ToggleBG.h>
  42 #include <Xm/RowColumn.h>
  43 #ifdef __VMS__
  44 #pragma message enable nosimpint
  45 #endif
  46
  47 #include "wx/motif/private.h"
  48
  49 // ----------------------------------------------------------------------------
  50 // functions prototypes
  51 // ----------------------------------------------------------------------------
  52
  53 static void wxMenuItemCallback(Widget w, XtPointer clientData, XtPointer ptr);
  54 static void wxMenuItemArmCallback(Widget w, XtPointer clientData, XtPointer ptr);
  55 static void wxMenuItemDisarmCallback(Widget w, XtPointer clientData, XtPointer ptr);
  56
  57 // ============================================================================
  58 // implementation
  59 // ============================================================================
  60
  61 // ----------------------------------------------------------------------------
  62 // dynamic classes implementation
  63 // ----------------------------------------------------------------------------
  64
  65 IMPLEMENT_DYNAMIC_CLASS(wxMenuItem, wxObject)
  66
  67 // ----------------------------------------------------------------------------
  68 // wxMenuItem
  69 // ----------------------------------------------------------------------------
  70
  71 // ctor & dtor
  72 // -----------
  73
  74 wxMenuItem::wxMenuItem(wxMenu *pParentMenu,
  75                        int id,
  76                        const wxString& strName,
  77                        const wxString& strHelp,
  78                        wxItemKind kind,
  79                        wxMenu *pSubMenu)
  80           : wxMenuItemBase(pParentMenu, id, strName, strHelp, kind, pSubMenu)
  81 {
  82     // Motif-specific
  83     m_menuBar      = NULL;
  84     m_buttonWidget = (WXWidget) NULL;
  85     m_topMenu      = NULL;
  86 }
  87
  88 wxMenuItem::~wxMenuItem()
  89 {
  90 }
  91
  92 // misc
  93 // ----
  94
  95 // delete the sub menu
  96 void wxMenuItem::DeleteSubMenu()
  97 {
  98     wxASSERT( m_subMenu != NULL );
  99
 100     delete m_subMenu;
 101     m_subMenu = NULL;
 102 }
 103
 104 // change item state
 105 // -----------------
 106
 107 void wxMenuItem::Enable(bool bDoEnable)
 108 {
 109     if ( m_isEnabled != bDoEnable )
 110     {
 111         if ( !IsSubMenu() )
 112         {
 113             // normal menu item
 114             if (m_buttonWidget)
 115                 XtSetSensitive( (Widget) m_buttonWidget, (Boolean) bDoEnable);
 116         }
 117         else                            // submenu
 118         {
 119             // Maybe we should apply this to all items in the submenu?
 120             // Or perhaps it works anyway.
 121             if (m_buttonWidget)
 122                 XtSetSensitive( (Widget) m_buttonWidget, (Boolean) bDoEnable);
 123         }
 124
 125         wxMenuItemBase::Enable(bDoEnable);
 126     }
 127 }
 128
 129 void wxMenuItem::Check(bool bDoCheck)
 130 {
 131     wxCHECK_RET( IsCheckable(), "only checkable items may be checked" );
 132
 133     if ( m_isChecked != bDoCheck )
 134     {
 135         if ( m_buttonWidget )
 136         {
 137             wxASSERT_MSG( XtIsSubclass((Widget)m_buttonWidget,
 138                                        xmToggleButtonGadgetClass),
 139                           wxT("checkable menu item must be a toggle button") );
 140
 141             XtVaSetValues((Widget)m_buttonWidget,
 142                           XmNset, (Boolean)bDoCheck,
 143                           NULL);
 144         }
 145
 146         wxMenuItemBase::Check(bDoCheck);
 147     }
 148 }
 149
 150 /* static */
 151 wxString wxMenuItemBase::GetLabelFromText(const wxString& text)
 152 {
 153     return wxStripMenuCodes(text);
 154 }
 155
 156 // ----------------------------------------------------------------------------
 157 // wxMenuItemBase
 158 // ----------------------------------------------------------------------------
 159
 160 wxMenuItem *wxMenuItemBase::New(wxMenu *parentMenu,
 161                                 int id,
 162                                 const wxString& name,
 163                                 const wxString& help,
 164                                 wxItemKind kind,
 165                                 wxMenu *subMenu)
 166 {
 167     return new wxMenuItem(parentMenu, id, name, help, kind, subMenu);
 168 }
 169
 170 // ----------------------------------------------------------------------------
 171 // Motif-specific
 172 // ----------------------------------------------------------------------------
 173
 174 void wxMenuItem::CreateItem (WXWidget menu, wxMenuBar * menuBar, wxMenu * topMenu)
 175 {
 176     m_menuBar = menuBar;
 177     m_topMenu = topMenu;
 178
 179     if (GetId() == -2)
 180     {
 181         // Id=-2 identifies a Title item.
 182         m_buttonWidget = (WXWidget) XtVaCreateManagedWidget
 183             (wxStripMenuCodes(m_text),
 184             xmLabelGadgetClass, (Widget) menu, NULL);
 185     }
 186     else if ((!m_text.IsNull() && m_text != "") && (!m_subMenu))
 187     {
 188         wxString strName = wxStripMenuCodes(m_text);
 189         if (IsCheckable())
 190         {
 191             m_buttonWidget = (WXWidget) XtVaCreateManagedWidget (strName,
 192                 xmToggleButtonGadgetClass, (Widget) menu,
 193                 NULL);
 194             XtVaSetValues ((Widget) m_buttonWidget, XmNset, (Boolean) IsChecked(), NULL);
 195         }
 196         else
 197             m_buttonWidget = (WXWidget) XtVaCreateManagedWidget (strName,
 198             xmPushButtonGadgetClass, (Widget) menu,
 199             NULL);
 200         char mnem = wxFindMnemonic (m_text);
 201         if (mnem != 0)
 202             XtVaSetValues ((Widget) m_buttonWidget, XmNmnemonic, mnem, NULL);
 203
 204         //// TODO: proper accelerator treatment. What does wxFindAccelerator
 205         //// look for?
 206         strName = m_text;
 207         char *accel = wxFindAccelerator (strName);
 208         if (accel)
 209             XtVaSetValues ((Widget) m_buttonWidget, XmNaccelerator, accel, NULL);
 210
 211         // TODO: What does this do?
 212         XmString accel_str = wxFindAcceleratorText (strName);
 213         if (accel_str)
 214         {
 215             XtVaSetValues ((Widget) m_buttonWidget, XmNacceleratorText, accel_str, NULL);
 216             XmStringFree (accel_str);
 217         }
 218
 219         if (IsCheckable())
 220             XtAddCallback ((Widget) m_buttonWidget,
 221             XmNvalueChangedCallback,
 222             (XtCallbackProc) wxMenuItemCallback,
 223             (XtPointer) this);
 224         else
 225             XtAddCallback ((Widget) m_buttonWidget,
 226             XmNactivateCallback,
 227             (XtCallbackProc) wxMenuItemCallback,
 228             (XtPointer) this);
 229         XtAddCallback ((Widget) m_buttonWidget,
 230             XmNarmCallback,
 231             (XtCallbackProc) wxMenuItemArmCallback,
 232             (XtPointer) this);
 233         XtAddCallback ((Widget) m_buttonWidget,
 234             XmNdisarmCallback,
 235             (XtCallbackProc) wxMenuItemDisarmCallback,
 236             (XtPointer) this);
 237     }
 238     else if (GetId() == -1)
 239     {
 240         m_buttonWidget = (WXWidget) XtVaCreateManagedWidget ("separator",
 241             xmSeparatorGadgetClass, (Widget) menu, NULL);
 242     }
 243     else if (m_subMenu)
 244     {
 245         m_buttonWidget = m_subMenu->CreateMenu (menuBar, menu, topMenu, m_text, TRUE);
 246         m_subMenu->SetButtonWidget(m_buttonWidget);
 247         XtAddCallback ((Widget) m_buttonWidget,
 248             XmNcascadingCallback,
 249             (XtCallbackProc) wxMenuItemArmCallback,
 250             (XtPointer) this);
 251     }
 252     if (m_buttonWidget)
 253         XtSetSensitive ((Widget) m_buttonWidget, (Boolean) IsEnabled());
 254 }
 255
 256 void wxMenuItem::DestroyItem(bool full)
 257 {
 258     if (GetId() == -2)
 259     {
 260         ;      // Nothing
 261
 262     }
 263     else if ((!m_text.IsNull() && (m_text != "")) && !m_subMenu)
 264     {
 265         if (m_buttonWidget)
 266         {
 267             if (IsCheckable())
 268                 XtRemoveCallback ((Widget) m_buttonWidget, XmNvalueChangedCallback,
 269                 wxMenuItemCallback, (XtPointer) this);
 270             else
 271                 XtRemoveCallback ((Widget) m_buttonWidget, XmNactivateCallback,
 272                 wxMenuItemCallback, (XtPointer) this);
 273             XtRemoveCallback ((Widget) m_buttonWidget, XmNarmCallback,
 274                 wxMenuItemArmCallback, (XtPointer) this);
 275             XtRemoveCallback ((Widget) m_buttonWidget, XmNdisarmCallback,
 276                 wxMenuItemDisarmCallback, (XtPointer) this);
 277         }
 278     }
 279     else if (GetId() == -1)
 280     {
 281         ;      // Nothing
 282
 283     }
 284     else if (GetSubMenu())
 285     {
 286         if (m_buttonWidget)
 287         {
 288             XtRemoveCallback ((Widget) m_buttonWidget, XmNcascadingCallback,
 289                 wxMenuItemArmCallback, (XtPointer) this);
 290         }
 291         m_subMenu->DestroyMenu(full);
 292         if (full)
 293             m_buttonWidget = NULL;
 294     }
 295
 296     if (m_buttonWidget && full)
 297     {
 298         XtDestroyWidget ((Widget) m_buttonWidget);
 299         m_buttonWidget = (WXWidget) 0;
 300     }
 301 }
 302
 303 void wxMenuItem::SetText(const wxString& label)
 304 {
 305     char mnem = wxFindMnemonic (label);
 306     wxString label2 = wxStripMenuCodes(label);
 307
 308     m_text = label;
 309
 310     if (m_buttonWidget)
 311     {
 312         wxXmString label_str(label2);
 313         XtVaSetValues ((Widget) m_buttonWidget,
 314             XmNlabelString, label_str(),
 315             NULL);
 316         if (mnem != 0)
 317             XtVaSetValues ((Widget) m_buttonWidget, XmNmnemonic, mnem, NULL);
 318         char *accel = wxFindAccelerator (label2);
 319         if (accel)
 320             XtVaSetValues ((Widget) m_buttonWidget, XmNaccelerator, accel, NULL);
 321
 322         XmString accel_str = wxFindAcceleratorText (label2);
 323         if (accel_str)
 324         {
 325             XtVaSetValues ((Widget) m_buttonWidget, XmNacceleratorText, accel_str, NULL);
 326             XmStringFree (accel_str);
 327         }
 328     }
 329 }
 330
 331 // ----------------------------------------------------------------------------
 332 // Motif callbacks
 333 // ----------------------------------------------------------------------------
 334
 335 void wxMenuItemCallback (Widget WXUNUSED(w), XtPointer clientData,
 336                          XtPointer WXUNUSED(ptr))
 337 {
 338     wxMenuItem *item = (wxMenuItem *) clientData;
 339     if (item)
 340     {
 341         wxCommandEvent event(wxEVT_COMMAND_MENU_SELECTED, item->GetId());
 342         event.SetInt( item->GetId() );
 343
 344         if (item->IsCheckable())
 345         {
 346             Boolean isChecked = FALSE;
 347             XtVaGetValues ((Widget) item->GetButtonWidget(),
 348                            XmNset, & isChecked,
 349                            NULL);
 350
 351             // only set the flag, don't actually check anything
 352             item->wxMenuItemBase::Check(isChecked);
 353             event.SetInt(isChecked);
 354         }
 355
 356         if (item->GetMenuBar() && item->GetMenuBar()->GetMenuBarFrame())
 357         {
 358             event.SetEventObject(item->GetMenuBar()->GetMenuBarFrame());
 359
 360             item->GetMenuBar()->GetMenuBarFrame()
 361                 ->GetEventHandler()->ProcessEvent(event);
 362         }
 363         // this is the child of a popup menu
 364         else if (item->GetTopMenu())
 365         {
 366             event.SetEventObject(item->GetTopMenu());
 367
 368             item->GetTopMenu()->ProcessCommand (event);
 369
 370             // Since PopupMenu under Motif still grab right mouse
 371             // button events after it was closed, we need to delete
 372             // the associated widgets to allow next PopUpMenu to
 373             // appear; this needs to be done there because doing it in
 374             // a WorkProc as before may cause crashes if a menu item causes
 375             // the parent window of the menu to be destroyed
 376             item->GetTopMenu()->DestroyWidgetAndDetach();
 377         }
 378     }
 379 }
 380
 381 void wxMenuItemArmCallback (Widget WXUNUSED(w), XtPointer clientData,
 382                        XtPointer WXUNUSED(ptr))
 383 {
 384     wxMenuItem *item = (wxMenuItem *) clientData;
 385     if (item)
 386     {
 387         if (item->GetMenuBar() && item->GetMenuBar()->GetMenuBarFrame())
 388         {
 389             wxMenuEvent menuEvent(wxEVT_MENU_HIGHLIGHT, item->GetId());
 390             menuEvent.SetEventObject(item->GetMenuBar()->GetMenuBarFrame());
 391
 392             item->GetMenuBar()->GetMenuBarFrame()
 393                 ->GetEventHandler()->ProcessEvent(menuEvent);
 394         }
 395     }
 396 }
 397
 398 void
 399 wxMenuItemDisarmCallback (Widget WXUNUSED(w), XtPointer clientData,
 400                           XtPointer WXUNUSED(ptr))
 401 {
 402     wxMenuItem *item = (wxMenuItem *) clientData;
 403     if (item)
 404     {
 405         if (item->GetMenuBar() && item->GetMenuBar()->GetMenuBarFrame())
 406         {
 407             // TODO: not sure this is correct, since -1 means something
 408             // special to event system
 409             wxMenuEvent menuEvent(wxEVT_MENU_HIGHLIGHT, -1);
 410             menuEvent.SetEventObject(item->GetMenuBar()->GetMenuBarFrame());
 411
 412             item->GetMenuBar()->GetMenuBarFrame()
 413                 ->GetEventHandler()->ProcessEvent(menuEvent);
 414         }
 415     }
 416 }
 417