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, wxTextCtrl)
 172 BEGIN_EVENT_TABLE(wxComboBox, wxTextCtrl)
 173 END_EVENT_TABLE()
 174 WX_IMPLEMENT_COCOA_OWNER(wxComboBox,NSComboBox,NSTextField,NSView)
 175
 176 bool wxComboBox::Create(wxWindow *parent, wxWindowID winid,
 177             const wxString& value,
 178             const wxPoint& pos,
 179             const wxSize& size,
 180             const wxArrayString& choices,
 181             long style,
 182             const wxValidator& validator,
 183             const wxString& name)
 184 {
 185     wxCArrayString chs(choices);
 186
 187     return Create(parent, winid, value, pos, size, chs.GetCount(),
 188                   chs.GetStrings(), style, validator, name);
 189 }
 190
 191 bool wxComboBox::Create(wxWindow *parent, wxWindowID winid,
 192             const wxString& value,
 193             const wxPoint& pos,
 194             const wxSize& size,
 195             int n, const wxString choices[],
 196             long style,
 197             const wxValidator& validator,
 198             const wxString& name)
 199 {
 200     wxAutoNSAutoreleasePool pool;
 201     if(!CreateControl(parent,winid,pos,size,style,validator,name))
 202         return false;
 203
 204     m_cocoaNSView = NULL;
 205     SetNSComboBox([[WX_GET_OBJC_CLASS(wxPoserNSComboBox) alloc] initWithFrame:MakeDefaultNSRect(size)]);
 206     [m_cocoaNSView release];
 207     [GetNSTextField() setStringValue:wxNSStringWithWxString(value.c_str())];
 208     [GetNSControl() sizeToFit];
 209     if(m_parent)
 210         m_parent->CocoaAddChild(this);
 211     SetInitialFrameRect(pos,size);
 212
 213     wxComboBox::Append(n, choices);
 214
 215     [GetNSComboBox() setCompletes:true]; //autocomplete :)
 216
 217     return true;
 218 }
 219
 220 wxComboBox::~wxComboBox()
 221 {
 222     DisassociateNSComboBox(GetNSComboBox());
 223 }
 224
 225 void wxComboBox::doWxEvent(int nEvent)
 226 {
 227     wxCommandEvent event2(wxEVT_COMMAND_COMBOBOX_SELECTED, GetId() );
 228     event2.SetInt(GetSelection());
 229     event2.SetEventObject(this);
 230     event2.SetString(GetStringSelection());
 231     GetEventHandler()->ProcessEvent(event2);
 232
 233     // For consistency with MSW and GTK, also send a text updated event
 234     // After all, the text is updated when a selection is made
 235     wxCommandEvent TextEvent( wxEVT_COMMAND_TEXT_UPDATED, GetId() );
 236     TextEvent.SetString( GetStringSelection() );
 237     TextEvent.SetEventObject( this );
 238     GetEventHandler()->ProcessEvent( TextEvent );
 239 }
 240
 241
 242 void wxComboBox::SetSelection(int nSelection)
 243 {
 244     [GetNSComboBox() selectItemAtIndex:nSelection];
 245 }
 246
 247 wxString wxComboBox::GetStringSelection()
 248 {
 249     return wxStringWithNSString([GetNSComboBox() objectValueOfSelectedItem]);
 250 }
 251
 252 void wxComboBox::DoClear()
 253 {
 254     [GetNSComboBox() removeAllItems];
 255     m_Datas.Clear();
 256 }
 257
 258 void wxComboBox::DoDeleteOneItem(unsigned int n)
 259 {
 260     [GetNSComboBox() removeItemAtIndex:n];
 261     m_Datas.RemoveAt(n);
 262 }
 263
 264 unsigned int wxComboBox::GetCount() const
 265 {
 266     return (unsigned int)[GetNSComboBox() numberOfItems];
 267 }
 268
 269 wxString wxComboBox::GetString(unsigned int nIndex) const
 270 {
 271     return wxStringWithNSString([GetNSComboBox() itemObjectValueAtIndex:nIndex]);
 272 }
 273
 274 void wxComboBox::SetString(unsigned int nIndex, const wxString& szString)
 275 {
 276     wxAutoNSAutoreleasePool pool;
 277     //FIXME:  There appears to be no "set item data" method - maybe
 278     //an assignment would work?
 279     [GetNSComboBox() removeItemAtIndex:nIndex];
 280     [GetNSComboBox() insertItemWithObjectValue:wxNSStringWithWxString(szString) atIndex:nIndex];
 281 }
 282
 283 int wxComboBox::FindString(const wxString& szItem, bool bCase) const
 284 {
 285     // FIXME: use wxItemContainerImmutable::FindString for bCase parameter
 286     return [GetNSComboBox() indexOfItemWithObjectValue:wxNSStringWithWxString(szItem)];
 287 }
 288
 289 int wxComboBox::GetSelection() const
 290 {
 291     return [GetNSComboBox() indexOfSelectedItem];
 292 }
 293
 294 int wxComboBox::DoInsertItems(const wxArrayStringsAdapter& items,
 295                               unsigned int pos,
 296                               void **clientData,
 297                               wxClientDataType type)
 298 {
 299     wxAutoNSAutoreleasePool pool;
 300     const unsigned int numITems = items.GetCount();
 301     for ( unsigned int i = 0; i < numITems; ++i, ++pos )
 302     {
 303         [GetNSComboBox() insertItemWithObjectValue:wxNSStringWithWxString(items[i]) atIndex:(pos)];
 304         m_Datas.Insert(NULL, pos);
 305         AssignNewItemClientData(pos, clientData, i, type);
 306     }
 307     return pos - 1;
 308 }
 309
 310 void wxComboBox::DoSetItemClientData(unsigned int nIndex, void* pData)
 311 {
 312     m_Datas[nIndex] = pData;
 313 }
 314
 315 void* wxComboBox::DoGetItemClientData(unsigned int nIndex) const
 316 {
 317     return m_Datas[nIndex];
 318 }
 319
 320 #endif // wxUSE_COMBOBOX