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 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2003 David Elliott
   9 // Licence:     wxWidgets licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 //
  13 // Impl notes:
  14 // There is no custom data source because doing so unnecessarily sacrifices
  15 // some native autocompletion behavior (we would have to make our own -
  16 // the SimpleComboBox sample does so in the developer folder that
  17 // comes with OSX).  One reason you might want this would be to have
  18 // only one array or be able to display numbers returned by an NSNumber
  19 // from the methods.
  20 //
  21 // One problem though is that wxCB_SORT isn't implemented...
  22 //
  23 // Also, not sure if it is correctly getting text field events since
  24 // I'm using SetNSComboBox instead of SetNSTextField
  25 //
  26 // doWxEvent is really hackish... but since there's only one event...
  27 //
  28 // Ideas for future improvement - other notes:
  29 // Combox w/o wxCB_DROPDOWN doesn't seem to be implementable
  30 //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.
  31 //wxCB_SORT      is possible with data source
  32 //
  33 // setIntercellSpacing:/setItemHeight: to autoadjust to number of inserted items?
  34 //
  35 /*
  36     //example of autocompletion from SimpleComboBox Example
  37     // ==========================================================
  38 // Combo box data source methods
  39 // ==========================================================
  40
  41 - (int)numberOfItemsInComboBox:(NSComboBox *)aComboBox {
  42     return [genres count];
  43 }
  44 - (id)comboBox:(NSComboBox *)aComboBox objectValueForItemAtIndex:(int)index {
  45     return [genres objectAtIndex:index];
  46 }
  47 - (unsigned int)comboBox:(NSComboBox *)aComboBox indexOfItemWithStringValue:(NSString *)string {
  48     return [genres indexOfObject: string];
  49 }
  50
  51 - (NSString *) firstGenreMatchingPrefix:(NSString *)prefix {
  52     NSString *string = nil;
  53     NSString *lowercasePrefix = [prefix lowercaseString];
  54     NSEnumerator *stringEnum = [genres objectEnumerator];
  55     while ((string = [stringEnum nextObject])) {
  56         if ([[string lowercaseString] hasPrefix: lowercasePrefix]) return string;
  57     }
  58     return nil;
  59 }
  60
  61 - (NSString *)comboBox:(NSComboBox *)aComboBox completedString:(NSString *)inputString {
  62     // This method is received after each character typed by the user, because we have checked the "completes" flag for genreComboBox in IB.
  63     // 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.
  64     NSString *candidate = [self firstGenreMatchingPrefix: inputString];
  65     return (candidate ? candidate : inputString);
  66 }
  67 */
  68
  69 // ============================================================================
  70 // declarations
  71 // ============================================================================
  72
  73 // ----------------------------------------------------------------------------
  74 // headers
  75 // ----------------------------------------------------------------------------
  76
  77 #include "wx/wxprec.h"
  78
  79 #if wxUSE_COMBOBOX
  80
  81 #include "wx/combobox.h"
  82
  83 #include "wx/cocoa/objc/objc_uniquifying.h"
  84
  85 #ifndef WX_PRECOMP
  86     #include "wx/window.h"
  87     #include "wx/log.h"
  88     #include "wx/app.h"
  89 #endif // WX_PRECOMP
  90
  91 #import <AppKit/NSComboBox.h>
  92 #import <Foundation/NSNotification.h>
  93 #import <Foundation/NSString.h>
  94
  95 // ----------------------------------------------------------------------------
  96 // globals
  97 // ----------------------------------------------------------------------------
  98 WX_IMPLEMENT_OBJC_INTERFACE_HASHMAP(NSComboBox)
  99
 100 void wxCocoaNSComboBox::AssociateNSComboBox(WX_NSComboBox cocoaNSComboBox)
 101 {
 102     if(cocoaNSComboBox)
 103     {
 104         sm_cocoaHash.insert(wxCocoaNSComboBoxHash::value_type(cocoaNSComboBox,this));
 105
 106         [[NSNotificationCenter defaultCenter] addObserver:(id)cocoaNSComboBox selector:@selector(comboBoxSelectionDidChange:) name:@"NSComboBoxSelectionDidChangeNotification" object:cocoaNSComboBox];
 107         [[NSNotificationCenter defaultCenter] addObserver:(id)cocoaNSComboBox selector:@selector(comboBoxSelectionDidChange:) name:@"NSComboBoxSelectionIsChangingNotification" object:cocoaNSComboBox];
 108         [[NSNotificationCenter defaultCenter] addObserver:(id)cocoaNSComboBox selector:@selector(comboBoxSelectionDidChange:) name:@"NSComboBoxWillDismissNotification" object:cocoaNSComboBox];
 109         [[NSNotificationCenter defaultCenter] addObserver:(id)cocoaNSComboBox selector:@selector(comboBoxSelectionDidChange:) name:@"NSComboBoxWillPopUpNotification" object:cocoaNSComboBox];
 110     }
 111 }
 112
 113 void wxCocoaNSComboBox::DisassociateNSComboBox(WX_NSComboBox cocoaNSComboBox)
 114 {
 115     if(cocoaNSComboBox)
 116     {
 117         sm_cocoaHash.erase(cocoaNSComboBox);
 118         [[NSNotificationCenter defaultCenter] removeObserver:(id)cocoaNSComboBox name:@"NSComboBoxSelectionDidChangeNotification" object:cocoaNSComboBox];
 119         [[NSNotificationCenter defaultCenter] removeObserver:(id)cocoaNSComboBox name:@"NSComboBoxSelectionIsChangingNotification" object:cocoaNSComboBox];
 120         [[NSNotificationCenter defaultCenter] removeObserver:(id)cocoaNSComboBox name:@"NSComboBoxWillDismissNotification" object:cocoaNSComboBox];
 121         [[NSNotificationCenter defaultCenter] removeObserver:(id)cocoaNSComboBox name:@"NSComboBoxWillPopUpNotification" object:cocoaNSComboBox];
 122     }
 123 }
 124
 125 // ============================================================================
 126 // @class wxPoserNSComboBox
 127 // ============================================================================
 128 @interface wxPoserNSComboBox : NSComboBox
 129 {
 130 }
 131
 132 - (void)comboBoxSelectionDidChange:(NSNotification *)notification;
 133 - (void)comboBoxSelectionIsChanging:(NSNotification *)notification;
 134 - (void)comboBoxWillDismiss:(NSNotification *)notification;
 135 - (void)comboBoxWillPopUp:(NSNotification *)notification;
 136 @end // wxPoserNSComboBox
 137 WX_DECLARE_GET_OBJC_CLASS(wxPoserNSComboBox,NSComboBox)
 138
 139 //WX_IMPLEMENT_POSER(wxPoserNSComboBox);
 140 @implementation wxPoserNSComboBox : NSComboBox
 141
 142 - (void)comboBoxSelectionDidChange:(NSNotification *)notification
 143 {
 144     wxCocoaNSComboBox *win = wxCocoaNSComboBox::GetFromCocoa(self);
 145     win->doWxEvent(wxEVT_COMMAND_COMBOBOX_SELECTED);
 146 }
 147
 148 - (void)comboBoxSelectionIsChanging:(NSNotification *)notification
 149 {
 150     //...
 151 }
 152
 153 - (void)comboBoxWillDismiss:(NSNotification *)notification
 154 {
 155     //...
 156 }
 157
 158 - (void)comboBoxWillPopUp:(NSNotification *)notification
 159 {
 160     //...
 161 }
 162
 163 @end // implementation wxPoserNSComboBox
 164 WX_IMPLEMENT_GET_OBJC_CLASS(wxPoserNSComboBox,NSComboBox)
 165
 166 #include "wx/cocoa/autorelease.h"
 167 #include "wx/cocoa/string.h"
 168
 169 #import <AppKit/NSComboBox.h>
 170
 171 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
 172 BEGIN_EVENT_TABLE(wxComboBox, wxControl)
 173 END_EVENT_TABLE()
 174 WX_IMPLEMENT_COCOA_OWNER(wxComboBox,NSComboBox,NSTextField,NSView)
 175 WX_IMPLEMENT_COCOA_OWNER(wxComboBox,NSTextField,NSControl,NSView)
 176
 177 bool wxComboBox::Create(wxWindow *parent, wxWindowID winid,
 178             const wxString& value,
 179             const wxPoint& pos,
 180             const wxSize& size,
 181             const wxArrayString& choices,
 182             long style,
 183             const wxValidator& validator,
 184             const wxString& name)
 185 {
 186     wxCArrayString chs(choices);
 187
 188     return Create(parent, winid, value, pos, size, chs.GetCount(),
 189                   chs.GetStrings(), style, validator, name);
 190 }
 191
 192 bool wxComboBox::Create(wxWindow *parent, wxWindowID winid,
 193             const wxString& value,
 194             const wxPoint& pos,
 195             const wxSize& size,
 196             int n, const wxString choices[],
 197             long style,
 198             const wxValidator& validator,
 199             const wxString& name)
 200 {
 201     wxAutoNSAutoreleasePool pool;
 202     if(!CreateControl(parent,winid,pos,size,style,validator,name))
 203         return false;
 204
 205     m_cocoaNSView = NULL;
 206     SetNSComboBox([[WX_GET_OBJC_CLASS(wxPoserNSComboBox) alloc] initWithFrame:MakeDefaultNSRect(size)]);
 207     [m_cocoaNSView release];
 208     [GetNSTextField() setStringValue:wxNSStringWithWxString(value.c_str())];
 209     [GetNSControl() sizeToFit];
 210     if(m_parent)
 211         m_parent->CocoaAddChild(this);
 212     SetInitialFrameRect(pos,size);
 213
 214     wxComboBox::Append(n, choices);
 215
 216     [GetNSComboBox() setCompletes:true]; //autocomplete :)
 217
 218     return true;
 219 }
 220
 221 wxComboBox::~wxComboBox()
 222 {
 223     DisassociateNSComboBox(GetNSComboBox());
 224 }
 225
 226 void wxComboBox::doWxEvent(int nEvent)
 227 {
 228     wxCommandEvent event2(wxEVT_COMMAND_COMBOBOX_SELECTED, GetId() );
 229     event2.SetInt(GetSelection());
 230     event2.SetEventObject(this);
 231     event2.SetString(GetStringSelection());
 232     HandleWindowEvent(event2);
 233
 234     // For consistency with MSW and GTK, also send a text updated event
 235     // After all, the text is updated when a selection is made
 236     wxCommandEvent TextEvent( wxEVT_COMMAND_TEXT_UPDATED, GetId() );
 237     TextEvent.SetString( GetStringSelection() );
 238     TextEvent.SetEventObject( this );
 239     HandleWindowEvent( TextEvent );
 240 }
 241
 242
 243 void wxComboBox::SetSelection(int nSelection)
 244 {
 245     [GetNSComboBox() selectItemAtIndex:nSelection];
 246 }
 247
 248 wxString wxComboBox::GetStringSelection()
 249 {
 250     return wxStringWithNSString([GetNSComboBox() objectValueOfSelectedItem]);
 251 }
 252
 253 void wxComboBox::DoClear()
 254 {
 255     [GetNSComboBox() removeAllItems];
 256     m_Datas.Clear();
 257 }
 258
 259 void wxComboBox::DoDeleteOneItem(unsigned int n)
 260 {
 261     [GetNSComboBox() removeItemAtIndex:n];
 262     m_Datas.RemoveAt(n);
 263 }
 264
 265 unsigned int wxComboBox::GetCount() const
 266 {
 267     return (unsigned int)[GetNSComboBox() numberOfItems];
 268 }
 269
 270 wxString wxComboBox::GetString(unsigned int nIndex) const
 271 {
 272     return wxStringWithNSString([GetNSComboBox() itemObjectValueAtIndex:nIndex]);
 273 }
 274
 275 void wxComboBox::SetString(unsigned int nIndex, const wxString& szString)
 276 {
 277     wxAutoNSAutoreleasePool pool;
 278     //FIXME:  There appears to be no "set item data" method - maybe
 279     //an assignment would work?
 280     [GetNSComboBox() removeItemAtIndex:nIndex];
 281     [GetNSComboBox() insertItemWithObjectValue:wxNSStringWithWxString(szString) atIndex:nIndex];
 282 }
 283
 284 int wxComboBox::FindString(const wxString& szItem, bool bCase) const
 285 {
 286     // FIXME: use wxItemContainerImmutable::FindString for bCase parameter
 287     return [GetNSComboBox() indexOfItemWithObjectValue:wxNSStringWithWxString(szItem)];
 288 }
 289
 290 int wxComboBox::GetSelection() const
 291 {
 292     return [GetNSComboBox() indexOfSelectedItem];
 293 }
 294
 295 int wxComboBox::DoInsertItems(const wxArrayStringsAdapter& items,
 296                               unsigned int pos,
 297                               void **clientData,
 298                               wxClientDataType type)
 299 {
 300     wxAutoNSAutoreleasePool pool;
 301     const unsigned int numITems = items.GetCount();
 302     for ( unsigned int i = 0; i < numITems; ++i, ++pos )
 303     {
 304         [GetNSComboBox() insertItemWithObjectValue:wxNSStringWithWxString(items[i]) atIndex:(pos)];
 305         m_Datas.Insert(NULL, pos);
 306         AssignNewItemClientData(pos, clientData, i, type);
 307     }
 308     return pos - 1;
 309 }
 310
 311 void wxComboBox::DoSetItemClientData(unsigned int nIndex, void* pData)
 312 {
 313     m_Datas[nIndex] = pData;
 314 }
 315
 316 void* wxComboBox::DoGetItemClientData(unsigned int nIndex) const
 317 {
 318     return m_Datas[nIndex];
 319 }
 320
 321 /////////////////////////////////////////////////////////////////////////////
 322 // wxTextEntry virtual implementations:
 323
 324 void wxComboBox::WriteText(wxString const&)
 325 {
 326 }
 327
 328 wxString wxComboBox::GetValue() const
 329 {
 330     wxAutoNSAutoreleasePool pool;
 331     return wxStringWithNSString([GetNSTextField() stringValue]);
 332 }
 333
 334 void wxComboBox::Remove(long, long)
 335 {
 336 }
 337
 338 void wxComboBox::Cut()
 339 {
 340 }
 341
 342 void wxComboBox::Copy()
 343 {
 344 }
 345
 346 void wxComboBox::Paste()
 347 {
 348 }
 349
 350 void wxComboBox::Undo()
 351 {
 352 }
 353
 354 void wxComboBox::Redo()
 355 {
 356 }
 357
 358 bool wxComboBox::CanUndo() const
 359 {
 360     return false;
 361 }
 362
 363 bool wxComboBox::CanRedo() const
 364 {
 365     return false;
 366 }
 367
 368 void wxComboBox::SetInsertionPoint(long)
 369 {
 370 }
 371
 372 long wxComboBox::GetInsertionPoint() const
 373 {
 374     return 0;
 375 }
 376
 377 wxTextPos wxComboBox::GetLastPosition() const
 378 {
 379     // working - returns the size of the wxString
 380     return (long)(GetValue().Len());
 381 }
 382
 383 void wxComboBox::SetSelection(long, long)
 384 {
 385 }
 386
 387 void wxComboBox::GetSelection(long*, long*) const
 388 {
 389 }
 390
 391 bool wxComboBox::IsEditable() const
 392 {
 393     return [GetNSTextField() isEditable];
 394 }
 395
 396 void wxComboBox::SetEditable(bool editable)
 397 {
 398     // first ensure that the current value is stored (in case the user had not finished editing
 399     // before SetEditable(FALSE) was called)
 400     DoSetValue(GetValue(),1);
 401
 402     [GetNSTextField() setEditable: editable];
 403
 404     // forces the focus on the textctrl to be lost - while focus is still maintained
 405     // after SetEditable(FALSE) the user may still edit the control
 406     // (might not the best way to do this..)
 407     [GetNSTextField() abortEditing];
 408 }
 409
 410 #endif // wxUSE_COMBOBOX