src/osx/cocoa/combobox.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/cocoa/combobox.mm
   3 // Purpose:     wxChoice
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #if wxUSE_COMBOBOX
  15
  16 #include "wx/combobox.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/menu.h"
  20     #include "wx/dcclient.h"
  21 #endif
  22
  23 #include "wx/osx/cocoa/private/textimpl.h"
  24
  25 // work in progress
  26
  27 @interface wxNSTableDataSource : NSObject wxOSX_10_6_AND_LATER(<NSComboBoxDataSource>)
  28 {
  29     wxNSComboBoxControl* impl;
  30 }
  31
  32 - (NSInteger)numberOfItemsInComboBox:(NSComboBox *)aComboBox;
  33 - (id)comboBox:(NSComboBox *)aComboBox objectValueForItemAtIndex:(NSInteger)index;
  34
  35 @end
  36
  37
  38 @interface wxNSComboBox : NSComboBox
  39 {
  40 }
  41
  42 @end
  43
  44 @implementation wxNSComboBox
  45
  46 + (void)initialize
  47 {
  48     static BOOL initialized = NO;
  49     if (!initialized)
  50     {
  51         initialized = YES;
  52         wxOSXCocoaClassAddWXMethods( self );
  53     }
  54 }
  55
  56 - (void)controlTextDidChange:(NSNotification *)aNotification
  57 {
  58     wxUnusedVar(aNotification);
  59     wxWidgetCocoaImpl* impl = (wxWidgetCocoaImpl* ) wxWidgetImpl::FindFromWXWidget( self );
  60     if ( impl && impl->ShouldSendEvents() )
  61     {
  62         wxWindow* wxpeer = (wxWindow*) impl->GetWXPeer();
  63         if ( wxpeer ) {
  64             wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, wxpeer->GetId());
  65             event.SetEventObject( wxpeer );
  66             event.SetString( static_cast<wxComboBox*>(wxpeer)->GetValue() );
  67             wxpeer->HandleWindowEvent( event );
  68         }
  69     }
  70 }
  71
  72 - (void)comboBoxSelectionDidChange:(NSNotification *)notification
  73 {
  74     wxUnusedVar(notification);
  75     wxWidgetCocoaImpl* impl = (wxWidgetCocoaImpl* ) wxWidgetImpl::FindFromWXWidget( self );
  76     if ( impl && impl->ShouldSendEvents())
  77     {
  78         wxWindow* wxpeer = (wxWindow*) impl->GetWXPeer();
  79         if ( wxpeer ) {
  80             wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, wxpeer->GetId());
  81             event.SetEventObject( wxpeer );
  82             event.SetInt( static_cast<wxComboBox*>(wxpeer)->GetSelection() );
  83             // For some reason, wxComboBox::GetValue will not return the newly selected item
  84             // while we're inside this callback, so use AddPendingEvent to make sure
  85             // GetValue() returns the right value.
  86             wxpeer->GetEventHandler()->AddPendingEvent( event );
  87         }
  88     }
  89 }
  90 @end
  91
  92 wxNSComboBoxControl::wxNSComboBoxControl( wxComboBox *wxPeer, WXWidget w )
  93     : wxNSTextFieldControl(wxPeer, wxPeer, w)
  94 {
  95     m_comboBox = (NSComboBox*)w;
  96 }
  97
  98 wxNSComboBoxControl::~wxNSComboBoxControl()
  99 {
 100 }
 101
 102 int wxNSComboBoxControl::GetSelectedItem() const
 103 {
 104     return [m_comboBox indexOfSelectedItem];
 105 }
 106
 107 void wxNSComboBoxControl::SetSelectedItem(int item)
 108 {
 109     SendEvents(false);
 110
 111     if ( item != wxNOT_FOUND )
 112     {
 113         wxASSERT_MSG( item >= 0 && item < [m_comboBox numberOfItems],
 114                       "Inavlid item index." );
 115         [m_comboBox selectItemAtIndex: item];
 116     }
 117     else // remove current selection (if we have any)
 118     {
 119         const int sel = GetSelectedItem();
 120         if ( sel != wxNOT_FOUND )
 121             [m_comboBox deselectItemAtIndex:sel];
 122     }
 123
 124     SendEvents(true);
 125 }
 126
 127 int wxNSComboBoxControl::GetNumberOfItems() const
 128 {
 129     return [m_comboBox numberOfItems];
 130 }
 131
 132 void wxNSComboBoxControl::InsertItem(int pos, const wxString& item)
 133 {
 134     [m_comboBox insertItemWithObjectValue:wxCFStringRef( item , m_wxPeer->GetFont().GetEncoding() ).AsNSString() atIndex:pos];
 135 }
 136
 137 void wxNSComboBoxControl::RemoveItem(int pos)
 138 {
 139     SendEvents(false);
 140     [m_comboBox removeItemAtIndex:pos];
 141     SendEvents(true);
 142 }
 143
 144 void wxNSComboBoxControl::Clear()
 145 {
 146     SendEvents(false);
 147     [m_comboBox removeAllItems];
 148     SendEvents(true);
 149 }
 150
 151 wxString wxNSComboBoxControl::GetStringAtIndex(int pos) const
 152 {
 153     return wxCFStringRef::AsString([m_comboBox itemObjectValueAtIndex:pos], m_wxPeer->GetFont().GetEncoding());
 154 }
 155
 156 int wxNSComboBoxControl::FindString(const wxString& text) const
 157 {
 158     NSInteger nsresult = [m_comboBox indexOfItemWithObjectValue:wxCFStringRef( text , m_wxPeer->GetFont().GetEncoding() ).AsNSString()];
 159
 160     int result;
 161     if (nsresult == NSNotFound)
 162         result = wxNOT_FOUND;
 163     else
 164         result = (int) nsresult;
 165     return result;
 166 }
 167
 168 wxWidgetImplType* wxWidgetImpl::CreateComboBox( wxComboBox* wxpeer,
 169                                     wxWindowMac* WXUNUSED(parent),
 170                                     wxWindowID WXUNUSED(id),
 171                                     wxMenu* WXUNUSED(menu),
 172                                     const wxPoint& pos,
 173                                     const wxSize& size,
 174                                     long style,
 175                                     long WXUNUSED(extraStyle))
 176 {
 177     NSRect r = wxOSXGetFrameForControl( wxpeer, pos , size ) ;
 178     wxNSComboBox* v = [[wxNSComboBox alloc] initWithFrame:r];
 179     if (style & wxCB_READONLY)
 180         [v setEditable:NO];
 181     wxNSComboBoxControl* c = new wxNSComboBoxControl( wxpeer, v );
 182     return c;
 183 }
 184
 185 wxSize wxComboBox::DoGetBestSize() const
 186 {
 187     int lbWidth = GetCount() > 0 ? 20 : 100;  // some defaults
 188     wxSize baseSize = wxWindow::DoGetBestSize();
 189     int lbHeight = baseSize.y;
 190     int wLine;
 191
 192     {
 193         wxClientDC dc(const_cast<wxComboBox*>(this));
 194
 195         // Find the widest line
 196         for(unsigned int i = 0; i < GetCount(); i++)
 197         {
 198             wxString str(GetString(i));
 199
 200             wxCoord width, height ;
 201             dc.GetTextExtent( str , &width, &height);
 202             wLine = width ;
 203
 204             lbWidth = wxMax( lbWidth, wLine ) ;
 205         }
 206
 207         // Add room for the popup arrow
 208         lbWidth += 2 * lbHeight ;
 209     }
 210
 211     return wxSize( lbWidth, lbHeight );
 212 }
 213
 214 #endif // wxUSE_COMBOBOX