src/cocoa/menuitem.mm

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/cocoa/menuitem.mm
   3 // Purpose:     wxMenuItem implementation
   4 // Author:      David Elliott
   5 // Modified by:
   6 // Created:     2002/12/15
   7 // RCS-ID:      $Id$
   8 // Copyright:   2002-2004 David Elliott
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #include "wx/wxprec.h"
  21
  22 #if wxUSE_MENUS
  23
  24 #include "wx/menuitem.h"
  25
  26 #include "wx/cocoa/objc/objc_uniquifying.h"
  27
  28 #ifndef WX_PRECOMP
  29     #include "wx/menu.h"
  30     #include "wx/utils.h"
  31     #include "wx/frame.h"
  32     #include "wx/log.h"
  33 #endif
  34
  35 #include "wx/cocoa/autorelease.h"
  36 #include "wx/cocoa/string.h"
  37
  38 #import <AppKit/NSMenuItem.h>
  39 #import <AppKit/NSMenu.h>
  40 #import <Foundation/NSString.h>
  41 #import <AppKit/NSCell.h> // NSOnState, NSOffState
  42 #import <AppKit/NSEvent.h> // modifier key masks
  43
  44 // ----------------------------------------------------------------------------
  45 // functions prototypes
  46 // ----------------------------------------------------------------------------
  47
  48 // ============================================================================
  49 // @class wxNSMenuItemTarget
  50 // ============================================================================
  51 @interface wxNSMenuItemTarget : NSObject
  52 {
  53 }
  54
  55 - (void)wxMenuItemAction: (id)sender;
  56 - (BOOL)validateMenuItem: (id)menuItem;
  57 @end //interface wxNSMenuItemTarget
  58 WX_DECLARE_GET_OBJC_CLASS(wxNSMenuItemTarget,NSObject)
  59
  60 @implementation wxNSMenuItemTarget : NSObject
  61
  62 - (void)wxMenuItemAction: (id)sender
  63 {
  64     wxLogTrace(wxTRACE_COCOA,wxT("wxMenuItemAction"));
  65     wxMenuItem *item = wxMenuItem::GetFromCocoa(sender);
  66     wxCHECK_RET(item,wxT("wxMenuItemAction received but no wxMenuItem exists!"));
  67     item->CocoaItemSelected();
  68 }
  69
  70 - (BOOL)validateMenuItem: (id)menuItem
  71 {
  72     // TODO: Do wxWidgets validation here and avoid sending during idle time
  73     wxLogTrace(wxTRACE_COCOA,wxT("wxMenuItemAction"));
  74     wxMenuItem *item = wxMenuItem::GetFromCocoa(menuItem);
  75     wxCHECK_MSG(item,NO,wxT("validateMenuItem received but no wxMenuItem exists!"));
  76     return item->Cocoa_validateMenuItem();
  77 }
  78
  79 @end //implementation wxNSMenuItemTarget
  80 WX_IMPLEMENT_GET_OBJC_CLASS(wxNSMenuItemTarget,NSObject)
  81
  82 // ============================================================================
  83 // wxMenuItemCocoa implementation
  84 // ============================================================================
  85 wxMenuItemCocoaHash wxMenuItemCocoa::sm_cocoaHash;
  86
  87 wxObjcAutoRefFromAlloc<struct objc_object *> wxMenuItemCocoa::sm_cocoaTarget = [[WX_GET_OBJC_CLASS(wxNSMenuItemTarget) alloc] init];
  88
  89 // ----------------------------------------------------------------------------
  90 // wxMenuItemBase
  91 // ----------------------------------------------------------------------------
  92
  93 wxMenuItem *wxMenuItemBase::New(wxMenu *parentMenu,
  94                                 int itemid,
  95                                 const wxString& name,
  96                                 const wxString& help,
  97                                 wxItemKind kind,
  98                                 wxMenu *subMenu)
  99 {
 100     return new wxMenuItem(parentMenu, itemid, name, help, kind, subMenu);
 101 }
 102
 103 void wxMenuItemCocoa::CocoaSetKeyEquivalent()
 104 {
 105     wxAcceleratorEntry *accel = GetAccel();
 106     if(!accel)
 107         return;
 108
 109     int accelFlags = accel->GetFlags();
 110     int keyModifierMask = 0;
 111     if(accelFlags & wxACCEL_ALT)
 112         keyModifierMask |= NSAlternateKeyMask;
 113     if(accelFlags & wxACCEL_CTRL)
 114         keyModifierMask |= NSCommandKeyMask;
 115     int keyCode = accel->GetKeyCode();
 116     if(isalpha(keyCode))
 117     {   // For alpha characters use upper/lower rather than NSShiftKeyMask
 118         char alphaChar;
 119         if(accelFlags & wxACCEL_SHIFT)
 120             alphaChar = toupper(keyCode);
 121         else
 122             alphaChar = tolower(keyCode);
 123         [m_cocoaNSMenuItem setKeyEquivalent:[NSString stringWithCString:&alphaChar length:1]];
 124         [m_cocoaNSMenuItem setKeyEquivalentModifierMask:keyModifierMask];
 125     }
 126     else
 127     {
 128         if(accelFlags & wxACCEL_SHIFT)
 129             keyModifierMask |= NSShiftKeyMask;
 130         if(keyCode < 128) // low ASCII includes backspace/tab/etc.
 131         {   char alphaChar = keyCode;
 132             [m_cocoaNSMenuItem setKeyEquivalent:[NSString stringWithCString:&alphaChar length:1]];
 133         }
 134         else
 135         {   // TODO
 136         }
 137         [m_cocoaNSMenuItem setKeyEquivalentModifierMask:keyModifierMask];
 138     }
 139 }
 140
 141 // ----------------------------------------------------------------------------
 142 // ctor & dtor
 143 // ----------------------------------------------------------------------------
 144 wxMenuItemCocoa::wxMenuItemCocoa(wxMenu *pParentMenu,
 145                        int itemid,
 146                        const wxString& strName,
 147                        const wxString& strHelp,
 148                        wxItemKind kind,
 149                        wxMenu *pSubMenu)
 150           : wxMenuItemBase(pParentMenu, itemid, strName, strHelp, kind, pSubMenu)
 151 {
 152     wxAutoNSAutoreleasePool pool;
 153     if(m_kind == wxITEM_SEPARATOR)
 154         m_cocoaNSMenuItem = [[NSMenuItem separatorItem] retain];
 155     else
 156     {
 157         NSString *menuTitle = wxInitNSStringWithWxString([NSString alloc],wxStripMenuCodes(strName));
 158         SEL action;
 159         if(pSubMenu)
 160             action = nil;
 161         else
 162             action = @selector(wxMenuItemAction:);
 163         m_cocoaNSMenuItem = [[NSMenuItem alloc] initWithTitle:menuTitle action:action keyEquivalent:@""];
 164         sm_cocoaHash.insert(wxMenuItemCocoaHash::value_type(m_cocoaNSMenuItem,this));
 165         if(pSubMenu)
 166         {
 167             wxASSERT(pSubMenu->GetNSMenu());
 168             [pSubMenu->GetNSMenu() setTitle:menuTitle];
 169             [m_cocoaNSMenuItem setSubmenu:pSubMenu->GetNSMenu()];
 170         }
 171         else
 172             [m_cocoaNSMenuItem setTarget: sm_cocoaTarget];
 173         [menuTitle release];
 174         CocoaSetKeyEquivalent();
 175     }
 176 }
 177
 178 wxMenuItem::~wxMenuItem()
 179 {
 180     sm_cocoaHash.erase(m_cocoaNSMenuItem);
 181     [m_cocoaNSMenuItem release];
 182 }
 183
 184 void wxMenuItem::CocoaItemSelected()
 185 {
 186     wxMenu *menu = GetMenu();
 187     wxCHECK_RET(menu,wxT("wxMenuItemAction received but wxMenuItem is not in a wxMenu"));
 188     wxMenuBar *menubar = menu->GetMenuBar();
 189     if(menubar)
 190     {
 191         wxFrame *frame = menubar->GetFrame();
 192         wxCHECK_RET(frame, wxT("wxMenuBar MUST be attached to a wxFrame!"));
 193         frame->ProcessCommand(GetId());
 194     }
 195     else
 196     {
 197         if(IsCheckable())
 198             Toggle();
 199         GetMenu()->SendEvent(GetId(), IsCheckable()?IsChecked():-1);
 200     }
 201 }
 202
 203 bool wxMenuItem::Cocoa_validateMenuItem()
 204 {
 205     // TODO: do more sanity checking
 206     // TODO: Do wxWindows validation here and avoid sending during idle time
 207     return IsEnabled();
 208 }
 209
 210 // ----------------------------------------------------------------------------
 211 // misc
 212 // ----------------------------------------------------------------------------
 213
 214 void wxMenuItem::SetBitmaps(const wxBitmap& bmpChecked,
 215         const wxBitmap& bmpUnchecked)
 216 {
 217     wxCHECK_RET(m_kind != wxITEM_SEPARATOR, wxT("Separator items do not have bitmaps."));
 218     wxAutoNSAutoreleasePool pool;
 219     m_bmpChecked = bmpChecked;
 220     m_bmpUnchecked = bmpUnchecked;
 221     if(IsCheckable())
 222     {
 223         [m_cocoaNSMenuItem setOnStateImage: bmpChecked.GetNSImage(true)];
 224         [m_cocoaNSMenuItem setOffStateImage: bmpUnchecked.GetNSImage(true)];
 225     }
 226     else
 227     {
 228         wxASSERT_MSG(!bmpUnchecked.IsOk(),wxT("Normal menu items should only have one bitmap"));
 229         [m_cocoaNSMenuItem setImage: bmpChecked.GetNSImage(true)];
 230     }
 231 }
 232
 233 // change item state
 234 // -----------------
 235
 236 void wxMenuItem::Enable(bool bDoEnable)
 237 {
 238     wxMenuItemBase::Enable(bDoEnable);
 239     // NOTE: Nothing to do, we respond to validateMenuItem instead
 240 }
 241
 242 void wxMenuItem::Check(bool check)
 243 {
 244     wxCHECK_RET( IsCheckable(), wxT("only checkable items may be checked") );
 245     if(m_isChecked == check)
 246         return;
 247     wxAutoNSAutoreleasePool pool;
 248     if(GetKind() == wxITEM_RADIO)
 249     {
 250         // it doesn't make sense to uncheck a radio item - what would this do?
 251         if(!check)
 252             return;
 253         const wxMenuItemList& items = m_parentMenu->GetMenuItems();
 254         // First search backwards for other radio items
 255         wxMenuItemList::compatibility_iterator radioStart = items.Find(this);
 256         for(wxMenuItemList::compatibility_iterator prevNode = radioStart;
 257             prevNode && (prevNode->GetData()->GetKind() == wxITEM_RADIO);
 258             prevNode = prevNode->GetPrevious())
 259         {
 260             radioStart = prevNode;
 261         }
 262         // Now starting there set the state of every item until we're
 263         // out of radio items to set.
 264         for(wxMenuItemList::compatibility_iterator node = radioStart;
 265             node && (node->GetData()->GetKind() == wxITEM_RADIO);
 266             node = node->GetNext())
 267         {
 268             wxMenuItem *item = node->GetData();
 269             bool checkItem = (item == this);
 270             item->wxMenuItemBase::Check(checkItem);
 271             [item->m_cocoaNSMenuItem setState: checkItem?NSOnState:NSOffState];
 272         }
 273     }
 274     else // normal check (non-radio) item
 275     {
 276         wxMenuItemBase::Check(check);
 277         [m_cocoaNSMenuItem setState: check?NSOnState:NSOffState];
 278     }
 279 }
 280
 281 void wxMenuItem::SetItemLabel(const wxString& label)
 282 {
 283     wxMenuItemBase::SetItemLabel(label);
 284     wxCHECK_RET(m_kind != wxITEM_SEPARATOR, wxT("Separator items do not have titles."));
 285     [m_cocoaNSMenuItem setTitle: wxNSStringWithWxString(wxStripMenuCodes(label))];
 286     CocoaSetKeyEquivalent();
 287 }
 288
 289 void wxMenuItem::SetCheckable(bool checkable)
 290 {
 291     wxCHECK_RET(m_kind != wxITEM_SEPARATOR, wxT("Separator items cannot be turned into normal menu items."));
 292     wxMenuItemBase::SetCheckable(checkable);
 293     // NOTE: Cocoa does not discern between unchecked and normal items
 294 }
 295
 296 #endif // wxUSE_MENUS