src/gtk1/choice.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        choice.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11 #ifdef __GNUG__
  12 #pragma implementation "choice.h"
  13 #endif
  14
  15 #include "wx/choice.h"
  16
  17 //-----------------------------------------------------------------------------
  18 // data
  19 //-----------------------------------------------------------------------------
  20
  21 extern bool   g_blockEventsOnDrag;
  22
  23 //-----------------------------------------------------------------------------
  24 // "activate"
  25 //-----------------------------------------------------------------------------
  26
  27 static void gtk_choice_clicked_callback( GtkWidget *WXUNUSED(widget), wxChoice *choice )
  28 {
  29   if (!choice->HasVMT()) return;
  30   if (g_blockEventsOnDrag) return;
  31
  32   wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, choice->GetId() );
  33   event.SetInt( choice->GetSelection() );
  34   wxString tmp( choice->GetStringSelection() );
  35   event.SetString( WXSTRINGCAST(tmp) );
  36   event.SetEventObject(choice);
  37   choice->GetEventHandler()->ProcessEvent(event);
  38 }
  39
  40 //-----------------------------------------------------------------------------
  41 // wxChoice
  42 //-----------------------------------------------------------------------------
  43
  44 IMPLEMENT_DYNAMIC_CLASS(wxChoice,wxControl)
  45
  46 wxChoice::wxChoice()
  47 {
  48 }
  49
  50 bool wxChoice::Create( wxWindow *parent, wxWindowID id,
  51                        const wxPoint &pos, const wxSize &size,
  52                        int n, const wxString choices[],
  53                        long style, const wxValidator& validator, const wxString &name )
  54 {
  55     m_needParent = TRUE;
  56
  57     PreCreation( parent, id, pos, size, style, name );
  58
  59     SetValidator( validator );
  60
  61     m_widget = gtk_option_menu_new();
  62
  63     wxSize newSize = size;
  64     if (newSize.x == -1) newSize.x = 80;
  65     if (newSize.y == -1) newSize.y = 26;
  66     SetSize( newSize.x, newSize.y );
  67
  68     GtkWidget *menu = gtk_menu_new();
  69
  70     for (int i = 0; i < n; i++)
  71     {
  72         m_clientDataList.Append( (wxObject*) NULL );
  73
  74         GtkWidget *item = gtk_menu_item_new_with_label( choices[i] );
  75         gtk_menu_append( GTK_MENU(menu), item );
  76
  77         gtk_widget_realize( item );
  78         gtk_widget_realize( GTK_BIN(item)->child );
  79
  80         gtk_widget_show( item );
  81
  82         gtk_signal_connect( GTK_OBJECT( item ), "activate",
  83           GTK_SIGNAL_FUNC(gtk_choice_clicked_callback), (gpointer*)this );
  84     }
  85     gtk_option_menu_set_menu( GTK_OPTION_MENU(m_widget), menu );
  86
  87     m_parent->AddChild( this );
  88
  89     (m_parent->m_insertCallback)( m_parent, this );
  90
  91     PostCreation();
  92
  93     SetBackgroundColour( parent->GetBackgroundColour() );
  94     SetForegroundColour( parent->GetForegroundColour() );
  95
  96     Show( TRUE );
  97
  98     return TRUE;
  99 }
 100
 101 wxChoice::~wxChoice()
 102 {
 103     wxNode *node = m_clientDataList.First();
 104     while (node)
 105     {
 106         wxClientData *cd = (wxClientData*)node->Data();
 107         if (cd) delete cd;
 108         node = node->Next();
 109     }
 110     m_clientDataList.Clear();
 111 }
 112
 113 void wxChoice::AppendCommon( const wxString &item )
 114 {
 115     wxCHECK_RET( m_widget != NULL, "invalid choice" );
 116
 117     GtkWidget *menu = gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) );
 118     GtkWidget *menu_item = gtk_menu_item_new_with_label( item );
 119
 120     gtk_menu_append( GTK_MENU(menu), menu_item );
 121
 122     gtk_widget_realize( menu_item );
 123     gtk_widget_realize( GTK_BIN(menu_item)->child );
 124
 125     if (m_widgetStyle) ApplyWidgetStyle();
 126
 127     gtk_signal_connect( GTK_OBJECT( menu_item ), "activate",
 128       GTK_SIGNAL_FUNC(gtk_choice_clicked_callback), (gpointer*)this );
 129
 130     gtk_widget_show( menu_item );
 131 }
 132
 133 void wxChoice::Append( const wxString &item )
 134 {
 135     m_clientDataList.Append( (wxObject*)NULL );
 136
 137     AppendCommon( item );
 138 }
 139
 140 void wxChoice::Append( const wxString &item, void *clientData )
 141 {
 142     if (clientData)
 143         m_clientDataList.Append( (wxObject*) new wxVoidClientData( clientData ) );
 144     else
 145         m_clientDataList.Append( (wxObject*)NULL );
 146
 147     AppendCommon( item );
 148 }
 149
 150 void wxChoice::Append( const wxString &item, wxClientData *clientData )
 151 {
 152     m_clientDataList.Append( (wxObject*) clientData );
 153
 154     AppendCommon( item );
 155 }
 156
 157 void wxChoice::SetClientData( int n, void* clientData )
 158 {
 159     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 160
 161     wxNode *node = m_clientDataList.Nth( n );
 162     if (!node) return;
 163
 164     wxClientData *cd = (wxClientData*) node->Data();
 165     if (cd) delete cd;
 166
 167     if (clientData)
 168         node->SetData( (wxObject*) new wxVoidClientData(clientData) );
 169     else
 170         node->SetData( (wxObject*) NULL );
 171 }
 172
 173 void* wxChoice::GetClientData( int n )
 174 {
 175     wxCHECK_MSG( m_widget != NULL, NULL, "invalid combobox" );
 176
 177     wxNode *node = m_clientDataList.Nth( n );
 178     if (!node) return NULL;
 179
 180     wxVoidClientData *cd = (wxVoidClientData*) node->Data();
 181     if (cd)
 182         return cd->GetData();
 183     else
 184         return (void*) NULL;
 185 }
 186
 187 void wxChoice::SetClientObject( int n, wxClientData* clientData )
 188 {
 189     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 190
 191     wxNode *node = m_clientDataList.Nth( n );
 192     if (!node) return;
 193
 194     wxClientData *cd = (wxClientData*) node->Data();
 195     if (cd) delete cd;
 196
 197     node->SetData( (wxObject*) clientData );
 198 }
 199
 200 wxClientData* wxChoice::GetClientObject( int n )
 201 {
 202     wxCHECK_MSG( m_widget != NULL, (wxClientData*)NULL, "invalid combobox" );
 203
 204     wxNode *node = m_clientDataList.Nth( n );
 205     if (!node) return (wxClientData*) NULL;
 206
 207     return (wxClientData*) node->Data();
 208 }
 209
 210
 211 void wxChoice::Clear()
 212 {
 213     wxCHECK_RET( m_widget != NULL, "invalid choice" );
 214
 215     gtk_option_menu_remove_menu( GTK_OPTION_MENU(m_widget) );
 216     GtkWidget *menu = gtk_menu_new();
 217     gtk_option_menu_set_menu( GTK_OPTION_MENU(m_widget), menu );
 218
 219     wxNode *node = m_clientDataList.First();
 220     while (node)
 221     {
 222         wxClientData *cd = (wxClientData*)node->Data();
 223         if (cd) delete cd;
 224         node = node->Next();
 225     }
 226     m_clientDataList.Clear();
 227 }
 228
 229 void wxChoice::Delete( int WXUNUSED(n) )
 230 {
 231     wxFAIL_MSG( "wxChoice:Delete not implemented" );
 232 }
 233
 234 int wxChoice::FindString( const wxString &string ) const
 235 {
 236     wxCHECK_MSG( m_widget != NULL, -1, "invalid choice" );
 237
 238     // If you read this code once and you think you understand
 239     // it, then you are very wrong. Robert Roebling.
 240
 241     GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
 242     int count = 0;
 243     GList *child = menu_shell->children;
 244     while (child)
 245     {
 246         GtkBin *bin = GTK_BIN( child->data );
 247         GtkLabel *label = (GtkLabel *) NULL;
 248         if (bin->child) label = GTK_LABEL(bin->child);
 249         if (!label) label = GTK_LABEL( GTK_BUTTON(m_widget)->child );
 250
 251         wxASSERT_MSG( label != NULL , "wxChoice: invalid label" );
 252
 253        if (string == label->label) return count;
 254        child = child->next;
 255        count++;
 256     }
 257
 258     wxFAIL_MSG( "wxChoice: string not found" );
 259
 260     return -1;
 261 }
 262
 263 int wxChoice::GetColumns() const
 264 {
 265     return 1;
 266 }
 267
 268 int wxChoice::GetSelection()
 269 {
 270     wxCHECK_MSG( m_widget != NULL, -1, "invalid choice" );
 271
 272     GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
 273     int count = 0;
 274     GList *child = menu_shell->children;
 275     while (child)
 276     {
 277         GtkBin *bin = GTK_BIN( child->data );
 278         if (!bin->child) return count;
 279         child = child->next;
 280         count++;
 281     }
 282
 283     wxFAIL_MSG( "wxChoice: no selection" );
 284
 285     return -1;
 286 }
 287
 288 wxString wxChoice::GetString( int n ) const
 289 {
 290     wxCHECK_MSG( m_widget != NULL, "", "invalid choice" );
 291
 292     GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
 293     int count = 0;
 294     GList *child = menu_shell->children;
 295     while (child)
 296     {
 297         GtkBin *bin = GTK_BIN( child->data );
 298         if (count == n)
 299         {
 300             GtkLabel *label = (GtkLabel *) NULL;
 301             if (bin->child) label = GTK_LABEL(bin->child);
 302             if (!label) label = GTK_LABEL( GTK_BUTTON(m_widget)->child );
 303
 304             wxASSERT_MSG( label != NULL , "wxChoice: invalid label" );
 305
 306             return label->label;
 307         }
 308         child = child->next;
 309         count++;
 310     }
 311
 312     wxFAIL_MSG( "wxChoice: string not found" );
 313
 314     return "";
 315 }
 316
 317 wxString wxChoice::GetStringSelection() const
 318 {
 319     wxCHECK_MSG( m_widget != NULL, "", "invalid choice" );
 320
 321     GtkLabel *label = GTK_LABEL( GTK_BUTTON(m_widget)->child );
 322
 323     wxASSERT_MSG( label != NULL , "wxChoice: invalid label" );
 324
 325     return label->label;
 326 }
 327
 328 int wxChoice::Number() const
 329 {
 330     wxCHECK_MSG( m_widget != NULL, 0, "invalid choice" );
 331
 332     GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
 333     int count = 0;
 334     GList *child = menu_shell->children;
 335     while (child)
 336     {
 337         count++;
 338         child = child->next;
 339     }
 340     return count;
 341 }
 342
 343 void wxChoice::SetColumns( int WXUNUSED(n) )
 344 {
 345 }
 346
 347 void wxChoice::SetSelection( int n )
 348 {
 349     wxCHECK_RET( m_widget != NULL, "invalid choice" );
 350
 351     int tmp = n;
 352     gtk_option_menu_set_history( GTK_OPTION_MENU(m_widget), (gint)tmp );
 353
 354     gtk_choice_clicked_callback( (GtkWidget *) NULL, this );
 355 }
 356
 357 void wxChoice::SetStringSelection( const wxString &string )
 358 {
 359     wxCHECK_RET( m_widget != NULL, "invalid choice" );
 360
 361     int n = FindString( string );
 362     if (n != -1) SetSelection( n );
 363 }
 364
 365 void wxChoice::ApplyWidgetStyle()
 366 {
 367     SetWidgetStyle();
 368
 369     GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
 370
 371     gtk_widget_set_style( m_widget, m_widgetStyle );
 372     gtk_widget_set_style( GTK_WIDGET( menu_shell ), m_widgetStyle );
 373
 374     GList *child = menu_shell->children;
 375     while (child)
 376     {
 377         gtk_widget_set_style( GTK_WIDGET( child->data ), m_widgetStyle );
 378
 379         GtkBin *bin = GTK_BIN( child->data );
 380         GtkWidget *label = (GtkWidget *) NULL;
 381         if (bin->child) label = bin->child;
 382         if (!label) label = GTK_BUTTON(m_widget)->child;
 383
 384         gtk_widget_set_style( label, m_widgetStyle );
 385
 386         child = child->next;
 387     }
 388 }
 389