src/cocoa/combobox.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 // #include "wx/wxprec.h"
  13
  14 //
  15 // Impl notes:
  16 // There is no custom data source because doing so unnecessarily sacrifices
  17 // some native autocompletion behavior (we would have to make our own -
  18 // the SimpleComboBox sample does so in the developer folder that
  19 // comes with OSX).  One reason you might want this would be to have
  20 // only one array or be able to display numbers returned by an NSNumber
  21 // from the methods.
  22 //
  23 // One problem though is that wxCB_SORT isn't implemented...
  24 //
  25 // Also, not sure if it is correctly getting text field events since
  26 // I'm using SetNSComboBox instead of SetNSTextField
  27 //
  28 // doWxEvent is really hackish... but since there's only one event...
  29 //
  30 // Ideas for future improvement - other notes:
  31 // Combox w/o wxCB_DROPDOWN doesn't seem to be implementable
  32 //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.
  33 //wxCB_SORT     is possible with data source
  34 //
  35 // setIntercellSpacing:/setItemHeight: to autoadjust to number of inserted items?
  36 //
  37 /*
  38     //example of autocompletion from SimpleComboBox Example
  39     // ==========================================================
  40 // Combo box data source methods
  41 // ==========================================================
  42
  43 - (int)numberOfItemsInComboBox:(NSComboBox *)aComboBox {
  44     return [genres count];
  45 }
  46 - (id)comboBox:(NSComboBox *)aComboBox objectValueForItemAtIndex:(int)index {
  47     return [genres objectAtIndex:index];
  48 }
  49 - (unsigned int)comboBox:(NSComboBox *)aComboBox indexOfItemWithStringValue:(NSString *)string {
  50     return [genres indexOfObject: string];
  51 }
  52
  53 - (NSString *) firstGenreMatchingPrefix:(NSString *)prefix {
  54     NSString *string = nil;
  55     NSString *lowercasePrefix = [prefix lowercaseString];
  56     NSEnumerator *stringEnum = [genres objectEnumerator];
  57     while ((string = [stringEnum nextObject])) {
  58         if ([[string lowercaseString] hasPrefix: lowercasePrefix]) return string;
  59     }
  60     return nil;
  61 }
  62
  63 - (NSString *)comboBox:(NSComboBox *)aComboBox completedString:(NSString *)inputString {
  64     // This method is received after each character typed by the user, because we have checked the "completes" flag for genreComboBox in IB.
  65     // 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.
  66     NSString *candidate = [self firstGenreMatchingPrefix: inputString];
  67     return (candidate ? candidate : inputString);
  68 }
  69 */
  70
  71 /////////////////////////////////////////////////////////////////////////////
  72 // Name:        cocoa/NSComboBox.mm
  73 // Purpose:     wxCocoaNSComboBox
  74 // Author:      Ryan Norton
  75 // Modified by:
  76 // Created:     2005/02/16
  77 // RCS-ID:      $Id:
  78 // Copyright:   (c) 2003 David Elliott
  79 // Licence:     wxWidgets licence
  80 /////////////////////////////////////////////////////////////////////////////
  81
  82 // ============================================================================
  83 // declarations
  84 // ============================================================================
  85
  86 // ----------------------------------------------------------------------------
  87 // headers
  88 // ----------------------------------------------------------------------------
  89
  90 #include "wx/wxprec.h"
  91 #if wxUSE_COMBOBOX
  92
  93 #ifndef WX_PRECOMP
  94     #include "wx/window.h"
  95 #endif // WX_PRECOMP
  96
  97 #include "wx/cocoa/ObjcPose.h"
  98 #include "wx/combobox.h"
  99
 100 #import <AppKit/NSComboBox.h>
 101 #import <Foundation/NSNotification.h>
 102 #import <Foundation/NSString.h>
 103
 104 // ----------------------------------------------------------------------------
 105 // globals
 106 // ----------------------------------------------------------------------------
 107 WX_IMPLEMENT_OBJC_INTERFACE_HASHMAP(NSComboBox)
 108
 109 void wxCocoaNSComboBox::AssociateNSComboBox(WX_NSComboBox cocoaNSComboBox)
 110 {
 111     if(cocoaNSComboBox)
 112     {
 113         sm_cocoaHash.insert(wxCocoaNSComboBoxHash::value_type(cocoaNSComboBox,this));
 114
 115         [[NSNotificationCenter defaultCenter] addObserver:(id)cocoaNSComboBox selector:@selector(comboBoxSelectionDidChange:) name:@"NSComboBoxSelectionDidChangeNotification" object:cocoaNSComboBox];
 116         [[NSNotificationCenter defaultCenter] addObserver:(id)cocoaNSComboBox selector:@selector(comboBoxSelectionDidChange:) name:@"NSComboBoxSelectionIsChangingNotification" object:cocoaNSComboBox];
 117         [[NSNotificationCenter defaultCenter] addObserver:(id)cocoaNSComboBox selector:@selector(comboBoxSelectionDidChange:) name:@"NSComboBoxWillDismissNotification" object:cocoaNSComboBox];
 118         [[NSNotificationCenter defaultCenter] addObserver:(id)cocoaNSComboBox selector:@selector(comboBoxSelectionDidChange:) name:@"NSComboBoxWillPopUpNotification" object:cocoaNSComboBox];
 119     }
 120 }
 121
 122 void wxCocoaNSComboBox::DisassociateNSComboBox(WX_NSComboBox cocoaNSComboBox)
 123 {
 124     if(cocoaNSComboBox)
 125     {
 126         sm_cocoaHash.erase(cocoaNSComboBox);
 127         [[NSNotificationCenter defaultCenter] removeObserver:(id)cocoaNSComboBox name:@"NSComboBoxSelectionDidChangeNotification" object:cocoaNSComboBox];
 128         [[NSNotificationCenter defaultCenter] removeObserver:(id)cocoaNSComboBox name:@"NSComboBoxSelectionIsChangingNotification" object:cocoaNSComboBox];
 129         [[NSNotificationCenter defaultCenter] removeObserver:(id)cocoaNSComboBox name:@"NSComboBoxWillDismissNotification" object:cocoaNSComboBox];
 130         [[NSNotificationCenter defaultCenter] removeObserver:(id)cocoaNSComboBox name:@"NSComboBoxWillPopUpNotification" object:cocoaNSComboBox];
 131     }
 132 }
 133
 134 // ============================================================================
 135 // @class wxPoserNSComboBox
 136 // ============================================================================
 137 @interface wxPoserNSComboBox : NSComboBox
 138 {
 139 }
 140
 141 - (void)comboBoxSelectionDidChange:(NSNotification *)notification;
 142 - (void)comboBoxSelectionIsChanging:(NSNotification *)notification;
 143 - (void)comboBoxWillDismiss:(NSNotification *)notification;
 144 - (void)comboBoxWillPopUp:(NSNotification *)notification;
 145 @end // wxPoserNSComboBox
 146
 147 //WX_IMPLEMENT_POSER(wxPoserNSComboBox);
 148 @implementation wxPoserNSComboBox : NSComboBox
 149
 150 - (void)comboBoxSelectionDidChange:(NSNotification *)notification
 151 {
 152     wxCocoaNSComboBox *win = wxCocoaNSComboBox::GetFromCocoa(self);
 153     win->doWxEvent(wxEVT_COMMAND_COMBOBOX_SELECTED);
 154 }
 155
 156 - (void)comboBoxSelectionIsChanging:(NSNotification *)notification
 157 {
 158     //...
 159 }
 160
 161 - (void)comboBoxWillDismiss:(NSNotification *)notification
 162 {
 163     //...
 164 }
 165
 166 - (void)comboBoxWillPopUp:(NSNotification *)notification
 167 {
 168     //...
 169 }
 170
 171 @end // implementation wxPoserNSComboBox
 172
 173 #include "wx/app.h"
 174 #include "wx/combobox.h"
 175 #include "wx/log.h"
 176
 177 #include "wx/cocoa/autorelease.h"
 178 #include "wx/cocoa/string.h"
 179
 180 #import <AppKit/NSComboBox.h>
 181
 182 IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxTextCtrl)
 183 BEGIN_EVENT_TABLE(wxComboBox, wxTextCtrl)
 184 END_EVENT_TABLE()
 185 WX_IMPLEMENT_COCOA_OWNER(wxComboBox,NSComboBox,NSTextField,NSView)
 186
 187 bool wxComboBox::Create(wxWindow *parent, wxWindowID winid,
 188             const wxString& value,
 189             const wxPoint& pos,
 190             const wxSize& size,
 191             const wxArrayString& choices,
 192             long style,
 193             const wxValidator& validator,
 194             const wxString& name)
 195 {
 196     wxCArrayString chs(choices);
 197
 198     return Create(parent, winid, value, pos, size, chs.GetCount(),
 199                   chs.GetStrings(), style, validator, name);
 200 }
 201
 202 bool wxComboBox::Create(wxWindow *parent, wxWindowID winid,
 203             const wxString& value,
 204             const wxPoint& pos,
 205             const wxSize& size,
 206             int n, const wxString choices[],
 207             long style,
 208             const wxValidator& validator,
 209             const wxString& name)
 210 {
 211     wxAutoNSAutoreleasePool pool;
 212     if(!CreateControl(parent,winid,pos,size,style,validator,name))
 213         return false;
 214
 215     m_cocoaNSView = NULL;
 216     SetNSComboBox([[wxPoserNSComboBox alloc] initWithFrame:MakeDefaultNSRect(size)]);
 217     [m_cocoaNSView release];
 218     [GetNSTextField() setStringValue:wxNSStringWithWxString(value.c_str())];
 219     [GetNSControl() sizeToFit];
 220     if(m_parent)
 221         m_parent->CocoaAddChild(this);
 222     SetInitialFrameRect(pos,size);
 223
 224     for(int i = 0; i < n; ++i)
 225         wxComboBox::DoAppend(choices[i]);
 226
 227     [GetNSComboBox() setCompletes:true]; //autocomplete :)
 228
 229     return true;
 230 }
 231
 232 wxComboBox::~wxComboBox()
 233 {
 234     DisassociateNSComboBox(GetNSComboBox());
 235 }
 236
 237 void wxComboBox::doWxEvent(int nEvent)
 238 {
 239     wxCommandEvent event2(wxEVT_COMMAND_COMBOBOX_SELECTED, GetId() );
 240     event2.SetInt(GetSelection());
 241     event2.SetEventObject(this);
 242     event2.SetString(GetStringSelection());
 243     GetEventHandler()->ProcessEvent(event2);
 244
 245     // For consistency with MSW and GTK, also send a text updated event
 246     // After all, the text is updated when a selection is made
 247     wxCommandEvent TextEvent( wxEVT_COMMAND_TEXT_UPDATED, GetId() );
 248     TextEvent.SetString( GetStringSelection() );
 249     TextEvent.SetEventObject( this );
 250     GetEventHandler()->ProcessEvent( TextEvent );
 251 }
 252
 253
 254 void wxComboBox::SetSelection(int nSelection)
 255 {
 256     [GetNSComboBox() selectItemAtIndex:nSelection];
 257 }
 258
 259 wxString wxComboBox::GetStringSelection()
 260 {
 261     return wxStringWithNSString([GetNSComboBox() objectValueOfSelectedItem]);
 262 }
 263
 264 void wxComboBox::Clear()
 265 {
 266     [GetNSComboBox() removeAllItems];
 267     m_Datas.Clear();
 268 }
 269
 270 void wxComboBox::Delete(int nIndex)
 271 {
 272     [GetNSComboBox() removeItemAtIndex:nIndex];
 273     m_Datas.RemoveAt(nIndex);
 274 }
 275
 276 int wxComboBox::GetCount() const
 277 {
 278     return [GetNSComboBox() numberOfItems];
 279 }
 280
 281 wxString wxComboBox::GetString(int nIndex) const
 282 {       return wxStringWithNSString([GetNSComboBox() itemObjectValueAtIndex:nIndex]);   }
 283
 284 void wxComboBox::SetString(int nIndex, const wxString& szString)
 285 {
 286     wxAutoNSAutoreleasePool pool;
 287     //FIXME:  There appears to be no "set item data" method - maybe
 288     //an assignment would work?
 289     [GetNSComboBox() removeItemAtIndex:nIndex];
 290     [GetNSComboBox() insertItemWithObjectValue:wxNSStringWithWxString(szString) atIndex:nIndex];
 291 }
 292
 293 int wxComboBox::FindString(const wxString& szItem) const
 294 {       return [GetNSComboBox() indexOfItemWithObjectValue:wxNSStringWithWxString(szItem)];     }
 295
 296 int wxComboBox::GetSelection() const
 297 {       return [GetNSComboBox() indexOfSelectedItem];   }
 298
 299 int wxComboBox::DoAppend(const wxString& szItem)
 300 {
 301     m_Datas.Add(NULL);
 302     wxAutoNSAutoreleasePool pool;
 303     [GetNSComboBox() addItemWithObjectValue:wxNSStringWithWxString(szItem)];
 304     return [GetNSComboBox() numberOfItems];
 305 }
 306
 307 int wxComboBox::DoInsert(const wxString& szItem, int nIndex)
 308 {
 309     m_Datas.Insert(NULL, nIndex);
 310     wxAutoNSAutoreleasePool pool;
 311     [GetNSComboBox() insertItemWithObjectValue:wxNSStringWithWxString(szItem) atIndex:nIndex];
 312     return nIndex;
 313 }
 314
 315 void wxComboBox::DoSetItemClientData(int nIndex, void* pData)
 316 {
 317     m_Datas[nIndex] = pData;
 318 }
 319
 320 void* wxComboBox::DoGetItemClientData(int nIndex) const
 321 {
 322     return m_Datas[nIndex];
 323 }
 324
 325 void wxComboBox::DoSetItemClientObject(int nIndex, wxClientData* pClientData)
 326 {
 327     m_Datas[nIndex] = (void*) pClientData;
 328 }
 329
 330 wxClientData* wxComboBox::DoGetItemClientObject(int nIndex) const
 331 {
 332     return (wxClientData*) m_Datas[nIndex];
 333 }
 334
 335 #endif //wxUSE_COMBOBOX