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