src/cocoa/combobox.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/cocoa/combobox.mm
   3 // Purpose:     wxComboBox
   4 // Author:      Ryan Norton
   5 // Modified by:
   6 // Created:     2005/02/16
   7 // Copyright:   (c) 2003 David Elliott
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 //
  12 // Impl notes:
  13 // There is no custom data source because doing so unnecessarily sacrifices
  14 // some native autocompletion behaviour (we would have to make our own -
  15 // the SimpleComboBox sample does so in the developer folder that
  16 // comes with OSX).  One reason you might want this would be to have
  17 // only one array or be able to display numbers returned by an NSNumber
  18 // from the methods.
  19 //
  20 // One problem though is that wxCB_SORT isn't implemented...
  21 //
  22 // Also, not sure if it is correctly getting text field events since
  23 // I'm using SetNSComboBox instead of SetNSTextField
  24 //
  25 // doWxEvent is really hackish... but since there's only one event...
  26 //
  27 // Ideas for future improvement - other notes:
  28 // Combox w/o wxCB_DROPDOWN doesn't seem to be implementable
  29 //wxCB_READONLY  Same as wxCB_DROPDOWN but only the strings specified as the combobox choices can be selected, it is impossible to select (even from a program) a string which is not in the choices list.
  30 //wxCB_SORT      is possible with data source
  31 //
  32 // setIntercellSpacing:/setItemHeight: to autoadjust to number of inserted items?
  33 //
  34 /*
  35     //example of autocompletion from SimpleComboBox Example
  36     // ==========================================================
  37 // Combo box data source methods
  38 // ==========================================================
  39
  40 - (int)numberOfItemsInComboBox:(NSComboBox *)aComboBox {
  41     return [genres count];
  42 }
  43 - (id)comboBox:(NSComboBox *)aComboBox objectValueForItemAtIndex:(int)index {
  44     return [genres objectAtIndex:index];
  45 }
  46 - (unsigned int)comboBox:(NSComboBox *)aComboBox indexOfItemWithStringValue:(NSString *)string {
  47     return [genres indexOfObject: string];
  48 }
  49
  50 - (NSString *) firstGenreMatchingPrefix:(NSString *)prefix {
  51     NSString *string = nil;
  52     NSString *lowercasePrefix = [prefix lowercaseString];
  53     NSEnumerator *stringEnum = [genres objectEnumerator];
  54     while ((string = [stringEnum nextObject])) {
  55         if ([[string lowercaseString] hasPrefix: lowercasePrefix]) return string;
  56     }
  57     return nil;
  58 }
  59
  60 - (NSString *)comboBox:(NSComboBox *)aComboBox completedString:(NSString *)inputString {
  61     // This method is received after each character typed by the user, because we have checked the "completes" flag for genreComboBox in IB.
  62     // Given the inputString the user has typed, see if we can find a genre with the prefix, and return it as the suggested complete string.
  63     NSString *candidate = [self firstGenreMatchingPrefix: inputString];
  64     return (candidate ? candidate : inputString);
  65 }
  66 */
  67
  68 // ============================================================================
  69 // declarations
  70 // ============================================================================
  71
  72 // ----------------------------------------------------------------------------
  73 // headers
  74 // ----------------------------------------------------------------------------
  75
  76 #include "wx/wxprec.h"
  77
  78 #if wxUSE_COMBOBOX
  79
  80 #include "wx/combobox.h"
  81
  82 #include "wx/cocoa/objc/objc_uniquifying.h"
  83
  84 #ifndef WX_PRECOMP
  85     #include "wx/window.h"
  86     #include "wx/log.h"
  87     #include "wx/app.h"
  88 #endif // WX_PRECOMP
  89
  90 #import <AppKit/NSComboBox.h>
  91 #import <Foundation/NSNotification.h>
  92 #import <Foundation/NSString.h>
  93
  94 // ----------------------------------------------------------------------------
  95 // globals
  96 // ----------------------------------------------------------------------------
  97 WX_IMPLEMENT_OBJC_INTERFACE_HASHMAP(NSComboBox)
  98
  99 void wxCocoaNSComboBox::AssociateNSComboBox(WX_NSComboBox cocoaNSComboBox)
 100 {
 101     if(cocoaNSComboBox)
 102     {
 103         sm_cocoaHash.insert(wxCocoaNSComboBoxHash::value_type(cocoaNSComboBox,this));
 104
 105         [[NSNotificationCenter defaultCenter] addObserver:(id)cocoaNSComboBox selector:@selector(comboBoxSelectionDidChange:) name:@"NSComboBoxSelectionDidChangeNotification" object:cocoaNSComboBox];
 106         [[NSNotificationCenter defaultCenter] addObserver:(id)cocoaNSComboBox selector:@selector(comboBoxSelectionDidChange:) name:@"NSComboBoxSelectionIsChangingNotification" object:cocoaNSComboBox];
 107         [[NSNotificationCenter defaultCenter] addObserver:(id)cocoaNSComboBox selector:@selector(comboBoxSelectionDidChange:) name:@"NSComboBoxWillDismissNotification" object:cocoaNSComboBox];
 108         [[NSNotificationCenter defaultCenter] addObserver:(id)cocoaNSComboBox selector:@selector(comboBoxSelectionDidChange:) name:@"NSComboBoxWillPopUpNotification" object:cocoaNSComboBox];
 109     }
 110 }
 111
 112 void wxCocoaNSComboBox::DisassociateNSComboBox(WX_NSComboBox cocoaNSComboBox)
 113 {
 114     if(cocoaNSComboBox)
 115     {
 116         sm_cocoaHash.erase(cocoaNSComboBox);
 117         [[NSNotificationCenter defaultCenter] removeObserver:(id)cocoaNSComboBox name:@"NSComboBoxSelectionDidChangeNotification" object:cocoaNSComboBox];
 118         [[NSNotificationCenter defaultCenter] removeObserver:(id)cocoaNSComboBox name:@"NSComboBoxSelectionIsChangingNotification" object:cocoaNSComboBox];
 119         [[NSNotificationCenter defaultCenter] removeObserver:(id)cocoaNSComboBox name:@"NSComboBoxWillDismissNotification" object:cocoaNSComboBox];
 120         [[NSNotificationCenter defaultCenter] removeObserver:(id)cocoaNSComboBox name:@"NSComboBoxWillPopUpNotification" object:cocoaNSComboBox];
 121     }
 122 }
 123
 124 // ============================================================================
 125 // @class wxPoserNSComboBox
 126 // ============================================================================
 127 @interface wxPoserNSComboBox : NSComboBox
 128 {
 129 }
 130
 131 - (void)comboBoxSelectionDidChange:(NSNotification *)notification;
 132 - (void)comboBoxSelectionIsChanging:(NSNotification *)notification;
 133 - (void)comboBoxWillDismiss:(NSNotification *)notification;
 134 - (void)comboBoxWillPopUp:(NSNotification *)notification;
 135 @end // wxPoserNSComboBox
 136 WX_DECLARE_GET_OBJC_CLASS(wxPoserNSComboBox,NSComboBox)
 137
 138 //WX_IMPLEMENT_POSER(wxPoserNSComboBox);
 139 @implementation wxPoserNSComboBox : NSComboBox
 140
 141 - (void)comboBoxSelectionDidChange:(NSNotification *)notification
 142 {
 143     wxCocoaNSComboBox *win = wxCocoaNSComboBox::GetFromCocoa(self);
 144     win->doWxEvent(wxEVT_COMBOBOX);
 145 }
 146
 147 - (void)comboBoxSelectionIsChanging:(NSNotification *)notification
 148 {
 149     //...
 150 }
 151
 152 - (void)comboBoxWillDismiss:(NSNotification *)notification
 153 {
 154     //...
 155 }
 156
 157 - (void)comboBoxWillPopUp:(NSNotification *)notification
 158 {
 159     //...
 160 }
 161
 162 @end // implementation wxPoserNSComboBox
 163 WX_IMPLEMENT_GET_OBJC_CLASS(wxPoserNSComboBox,NSComboBox)
 164
 165 #include "wx/cocoa/autorelease.h"
 166 #include "wx/cocoa/string.h"
 167
 168 #import <AppKit/NSComboBox.h>
 169
 170 BEGIN_EVENT_TABLE(wxComboBox, wxControl)
 171 END_EVENT_TABLE()
 172 WX_IMPLEMENT_COCOA_OWNER(wxComboBox,NSComboBox,NSTextField,NSView)
 173 WX_IMPLEMENT_COCOA_OWNER(wxComboBox,NSTextField,NSControl,NSView)
 174
 175 bool wxComboBox::Create(wxWindow *parent, wxWindowID winid,
 176             const wxString& value,
 177             const wxPoint& pos,
 178             const wxSize& size,
 179             const wxArrayString& choices,
 180             long style,
 181             const wxValidator& validator,
 182             const wxString& name)
 183 {
 184     wxCArrayString chs(choices);
 185
 186     return Create(parent, winid, value, pos, size, chs.GetCount(),
 187                   chs.GetStrings(), style, validator, name);
 188 }
 189
 190 bool wxComboBox::Create(wxWindow *parent, wxWindowID winid,
 191             const wxString& value,
 192             const wxPoint& pos,
 193             const wxSize& size,
 194             int n, const wxString choices[],
 195             long style,
 196             const wxValidator& validator,
 197             const wxString& name)
 198 {
 199     wxAutoNSAutoreleasePool pool;
 200     if(!CreateControl(parent,winid,pos,size,style,validator,name))
 201         return false;
 202
 203     m_cocoaNSView = NULL;
 204     SetNSComboBox([[WX_GET_OBJC_CLASS(wxPoserNSComboBox) alloc] initWithFrame:MakeDefaultNSRect(size)]);
 205     [m_cocoaNSView release];
 206     [GetNSTextField() setStringValue:wxNSStringWithWxString(value.c_str())];
 207     [GetNSControl() sizeToFit];
 208     if(m_parent)
 209         m_parent->CocoaAddChild(this);
 210     SetInitialFrameRect(pos,size);
 211
 212     wxComboBox::Append(n, choices);
 213
 214     [GetNSComboBox() setCompletes:true]; //autocomplete :)
 215
 216     return true;
 217 }
 218
 219 wxComboBox::~wxComboBox()
 220 {
 221     DisassociateNSComboBox(GetNSComboBox());
 222 }
 223
 224 void wxComboBox::doWxEvent(int nEvent)
 225 {
 226     wxCommandEvent event2(wxEVT_COMBOBOX, GetId() );
 227     event2.SetInt(GetSelection());
 228     event2.SetEventObject(this);
 229     event2.SetString(GetStringSelection());
 230     HandleWindowEvent(event2);
 231
 232     // For consistency with MSW and GTK, also send a text updated event
 233     // After all, the text is updated when a selection is made
 234     wxCommandEvent TextEvent( wxEVT_TEXT, GetId() );
 235     TextEvent.SetString( GetStringSelection() );
 236     TextEvent.SetEventObject( this );
 237     HandleWindowEvent( TextEvent );
 238 }
 239
 240
 241 void wxComboBox::SetSelection(int nSelection)
 242 {
 243     [GetNSComboBox() selectItemAtIndex:nSelection];
 244 }
 245
 246 wxString wxComboBox::GetStringSelection()
 247 {
 248     return wxStringWithNSString([GetNSComboBox() objectValueOfSelectedItem]);
 249 }
 250
 251 void wxComboBox::DoClear()
 252 {
 253     [GetNSComboBox() removeAllItems];
 254     m_Datas.Clear();
 255 }
 256
 257 void wxComboBox::DoDeleteOneItem(unsigned int n)
 258 {
 259     [GetNSComboBox() removeItemAtIndex:n];
 260     m_Datas.RemoveAt(n);
 261 }
 262
 263 unsigned int wxComboBox::GetCount() const
 264 {
 265     return (unsigned int)[GetNSComboBox() numberOfItems];
 266 }
 267
 268 wxString wxComboBox::GetString(unsigned int nIndex) const
 269 {
 270     return wxStringWithNSString([GetNSComboBox() itemObjectValueAtIndex:nIndex]);
 271 }
 272
 273 void wxComboBox::SetString(unsigned int nIndex, const wxString& szString)
 274 {
 275     wxAutoNSAutoreleasePool pool;
 276     //FIXME:  There appears to be no "set item data" method - maybe
 277     //an assignment would work?
 278     [GetNSComboBox() removeItemAtIndex:nIndex];
 279     [GetNSComboBox() insertItemWithObjectValue:wxNSStringWithWxString(szString) atIndex:nIndex];
 280 }
 281
 282 int wxComboBox::FindString(const wxString& szItem, bool bCase) const
 283 {
 284     // FIXME: use wxItemContainerImmutable::FindString for bCase parameter
 285     return [GetNSComboBox() indexOfItemWithObjectValue:wxNSStringWithWxString(szItem)];
 286 }
 287
 288 int wxComboBox::GetSelection() const
 289 {
 290     return [GetNSComboBox() indexOfSelectedItem];
 291 }
 292
 293 int wxComboBox::DoInsertItems(const wxArrayStringsAdapter& items,
 294                               unsigned int pos,
 295                               void **clientData,
 296                               wxClientDataType type)
 297 {
 298     wxAutoNSAutoreleasePool pool;
 299     const unsigned int numITems = items.GetCount();
 300     for ( unsigned int i = 0; i < numITems; ++i, ++pos )
 301     {
 302         [GetNSComboBox() insertItemWithObjectValue:wxNSStringWithWxString(items[i]) atIndex:(pos)];
 303         m_Datas.Insert(NULL, pos);
 304         AssignNewItemClientData(pos, clientData, i, type);
 305     }
 306     return pos - 1;
 307 }
 308
 309 void wxComboBox::DoSetItemClientData(unsigned int nIndex, void* pData)
 310 {
 311     m_Datas[nIndex] = pData;
 312 }
 313
 314 void* wxComboBox::DoGetItemClientData(unsigned int nIndex) const
 315 {
 316     return m_Datas[nIndex];
 317 }
 318
 319 /////////////////////////////////////////////////////////////////////////////
 320 // wxTextEntry virtual implementations:
 321
 322 void wxComboBox::WriteText(wxString const&)
 323 {
 324 }
 325
 326 wxString wxComboBox::GetValue() const
 327 {
 328     wxAutoNSAutoreleasePool pool;
 329     return wxStringWithNSString([GetNSTextField() stringValue]);
 330 }
 331
 332 void wxComboBox::Remove(long, long)
 333 {
 334 }
 335
 336 void wxComboBox::Cut()
 337 {
 338 }
 339
 340 void wxComboBox::Copy()
 341 {
 342 }
 343
 344 void wxComboBox::Paste()
 345 {
 346 }
 347
 348 void wxComboBox::Undo()
 349 {
 350 }
 351
 352 void wxComboBox::Redo()
 353 {
 354 }
 355
 356 bool wxComboBox::CanUndo() const
 357 {
 358     return false;
 359 }
 360
 361 bool wxComboBox::CanRedo() const
 362 {
 363     return false;
 364 }
 365
 366 void wxComboBox::SetInsertionPoint(long)
 367 {
 368 }
 369
 370 long wxComboBox::GetInsertionPoint() const
 371 {
 372     return 0;
 373 }
 374
 375 wxTextPos wxComboBox::GetLastPosition() const
 376 {
 377     // working - returns the size of the wxString
 378     return (long)(GetValue().Len());
 379 }
 380
 381 void wxComboBox::SetSelection(long, long)
 382 {
 383 }
 384
 385 void wxComboBox::GetSelection(long*, long*) const
 386 {
 387 }
 388
 389 bool wxComboBox::IsEditable() const
 390 {
 391     return [GetNSTextField() isEditable];
 392 }
 393
 394 void wxComboBox::SetEditable(bool editable)
 395 {
 396     // first ensure that the current value is stored (in case the user had not finished editing
 397     // before SetEditable(FALSE) was called)
 398     DoSetValue(GetValue(),1);
 399
 400     [GetNSTextField() setEditable: editable];
 401
 402     // forces the focus on the textctrl to be lost - while focus is still maintained
 403     // after SetEditable(FALSE) the user may still edit the control
 404     // (might not the best way to do this..)
 405     [GetNSTextField() abortEditing];
 406 }
 407
 408 #endif // wxUSE_COMBOBOX