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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 | #if wxUSE_CHOICE | |
18 | ||
19 | #include "gdk/gdk.h" | |
20 | #include "gtk/gtk.h" | |
21 | ||
22 | //----------------------------------------------------------------------------- | |
23 | // idle system | |
24 | //----------------------------------------------------------------------------- | |
25 | ||
26 | extern void wxapp_install_idle_handler(); | |
27 | extern bool g_isIdle; | |
28 | ||
29 | //----------------------------------------------------------------------------- | |
30 | // data | |
31 | //----------------------------------------------------------------------------- | |
32 | ||
33 | extern bool g_blockEventsOnDrag; | |
34 | ||
35 | //----------------------------------------------------------------------------- | |
36 | // "activate" | |
37 | //----------------------------------------------------------------------------- | |
38 | ||
39 | static void gtk_choice_clicked_callback( GtkWidget *WXUNUSED(widget), wxChoice *choice ) | |
40 | { | |
41 | if (g_isIdle) | |
42 | wxapp_install_idle_handler(); | |
43 | ||
44 | if (!choice->m_hasVMT) return; | |
45 | ||
46 | if (g_blockEventsOnDrag) return; | |
47 | ||
48 | wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, choice->GetId() ); | |
49 | int n = choice->GetSelection(); | |
50 | ||
51 | event.SetInt( n ); | |
52 | event.SetString( choice->GetStringSelection() ); | |
53 | event.SetEventObject(choice); | |
54 | ||
55 | if ( choice->HasClientObjectData() ) | |
56 | event.SetClientObject( choice->GetClientObject(n) ); | |
57 | else if ( choice->HasClientUntypedData() ) | |
58 | event.SetClientData( choice->GetClientData(n) ); | |
59 | ||
60 | choice->GetEventHandler()->ProcessEvent(event); | |
61 | } | |
62 | ||
63 | //----------------------------------------------------------------------------- | |
64 | // wxChoice | |
65 | //----------------------------------------------------------------------------- | |
66 | ||
67 | IMPLEMENT_DYNAMIC_CLASS(wxChoice,wxControl) | |
68 | ||
69 | wxChoice::wxChoice() | |
70 | { | |
71 | m_strings = (wxSortedArrayString *)NULL; | |
72 | } | |
73 | ||
74 | bool wxChoice::Create( wxWindow *parent, wxWindowID id, | |
75 | const wxPoint &pos, const wxSize &size, | |
76 | int n, const wxString choices[], | |
77 | long style, const wxValidator& validator, const wxString &name ) | |
78 | { | |
79 | m_needParent = TRUE; | |
80 | #if (GTK_MINOR_VERSION > 0) | |
81 | m_acceptsFocus = TRUE; | |
82 | #endif | |
83 | ||
84 | if (!PreCreation( parent, pos, size ) || | |
85 | !CreateBase( parent, id, pos, size, style, validator, name )) | |
86 | { | |
87 | wxFAIL_MSG( wxT("wxChoice creation failed") ); | |
88 | return FALSE; | |
89 | } | |
90 | ||
91 | m_widget = gtk_option_menu_new(); | |
92 | ||
93 | wxSize newSize(size); | |
94 | if (newSize.x == -1) | |
95 | newSize.x = 80; | |
96 | if (newSize.y == -1) | |
97 | newSize.y = 26; | |
98 | SetSize( newSize.x, newSize.y ); | |
99 | ||
100 | if ( style & wxCB_SORT ) | |
101 | { | |
102 | // if our m_strings != NULL, DoAppend() will check for it and insert | |
103 | // items in the correct order | |
104 | m_strings = new wxSortedArrayString; | |
105 | } | |
106 | ||
107 | GtkWidget *menu = gtk_menu_new(); | |
108 | ||
109 | for (int i = 0; i < n; i++) | |
110 | { | |
111 | AppendHelper(menu, choices[i]); | |
112 | } | |
113 | ||
114 | gtk_option_menu_set_menu( GTK_OPTION_MENU(m_widget), menu ); | |
115 | ||
116 | m_parent->DoAddChild( this ); | |
117 | ||
118 | PostCreation(); | |
119 | ||
120 | SetBackgroundColour( parent->GetBackgroundColour() ); | |
121 | SetForegroundColour( parent->GetForegroundColour() ); | |
122 | SetFont( parent->GetFont() ); | |
123 | ||
124 | Show( TRUE ); | |
125 | ||
126 | return TRUE; | |
127 | } | |
128 | ||
129 | wxChoice::~wxChoice() | |
130 | { | |
131 | Clear(); | |
132 | ||
133 | delete m_strings; | |
134 | } | |
135 | ||
136 | int wxChoice::DoAppend( const wxString &item ) | |
137 | { | |
138 | wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice control") ); | |
139 | ||
140 | GtkWidget *menu = gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ); | |
141 | ||
142 | return AppendHelper(menu, item); | |
143 | } | |
144 | ||
145 | void wxChoice::DoSetItemClientData( int n, void* clientData ) | |
146 | { | |
147 | wxCHECK_RET( m_widget != NULL, wxT("invalid choice control") ); | |
148 | ||
149 | wxNode *node = m_clientList.Nth( n ); | |
150 | wxCHECK_RET( node, wxT("invalid index in wxChoice::DoSetItemClientData") ); | |
151 | ||
152 | node->SetData( (wxObject*) clientData ); | |
153 | } | |
154 | ||
155 | void* wxChoice::DoGetItemClientData( int n ) const | |
156 | { | |
157 | wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid choice control") ); | |
158 | ||
159 | wxNode *node = m_clientList.Nth( n ); | |
160 | wxCHECK_MSG( node, NULL, wxT("invalid index in wxChoice::DoGetItemClientData") ); | |
161 | ||
162 | return node->Data(); | |
163 | } | |
164 | ||
165 | void wxChoice::DoSetItemClientObject( int n, wxClientData* clientData ) | |
166 | { | |
167 | wxCHECK_RET( m_widget != NULL, wxT("invalid choice control") ); | |
168 | ||
169 | wxNode *node = m_clientList.Nth( n ); | |
170 | wxCHECK_RET( node, wxT("invalid index in wxChoice::DoSetItemClientObject") ); | |
171 | ||
172 | wxClientData *cd = (wxClientData*) node->Data(); | |
173 | delete cd; | |
174 | ||
175 | node->SetData( (wxObject*) clientData ); | |
176 | } | |
177 | ||
178 | wxClientData* wxChoice::DoGetItemClientObject( int n ) const | |
179 | { | |
180 | wxCHECK_MSG( m_widget != NULL, (wxClientData*) NULL, wxT("invalid choice control") ); | |
181 | ||
182 | wxNode *node = m_clientList.Nth( n ); | |
183 | wxCHECK_MSG( node, (wxClientData *)NULL, | |
184 | wxT("invalid index in wxChoice::DoGetItemClientObject") ); | |
185 | ||
186 | return (wxClientData*) node->Data(); | |
187 | } | |
188 | ||
189 | void wxChoice::Clear() | |
190 | { | |
191 | wxCHECK_RET( m_widget != NULL, wxT("invalid choice") ); | |
192 | ||
193 | gtk_option_menu_remove_menu( GTK_OPTION_MENU(m_widget) ); | |
194 | GtkWidget *menu = gtk_menu_new(); | |
195 | gtk_option_menu_set_menu( GTK_OPTION_MENU(m_widget), menu ); | |
196 | ||
197 | if ( HasClientObjectData() ) | |
198 | { | |
199 | // destroy the data (due to Robert's idea of using wxList<wxObject> | |
200 | // and not wxList<wxClientData> we can't just say | |
201 | // m_clientList.DeleteContents(TRUE) - this would crash! | |
202 | wxNode *node = m_clientList.First(); | |
203 | while ( node ) | |
204 | { | |
205 | delete (wxClientData *)node->Data(); | |
206 | node = node->Next(); | |
207 | } | |
208 | } | |
209 | m_clientList.Clear(); | |
210 | ||
211 | if ( m_strings ) | |
212 | m_strings->Clear(); | |
213 | } | |
214 | ||
215 | void wxChoice::Delete( int WXUNUSED(n) ) | |
216 | { | |
217 | wxFAIL_MSG( wxT("wxChoice:Delete not implemented") ); | |
218 | } | |
219 | ||
220 | int wxChoice::FindString( const wxString &string ) const | |
221 | { | |
222 | wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice") ); | |
223 | ||
224 | // If you read this code once and you think you understand | |
225 | // it, then you are very wrong. Robert Roebling. | |
226 | ||
227 | GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) ); | |
228 | int count = 0; | |
229 | GList *child = menu_shell->children; | |
230 | while (child) | |
231 | { | |
232 | GtkBin *bin = GTK_BIN( child->data ); | |
233 | GtkLabel *label = (GtkLabel *) NULL; | |
234 | if (bin->child) label = GTK_LABEL(bin->child); | |
235 | if (!label) label = GTK_LABEL( GTK_BUTTON(m_widget)->child ); | |
236 | ||
237 | wxASSERT_MSG( label != NULL , wxT("wxChoice: invalid label") ); | |
238 | ||
239 | if (string == wxString(label->label,*wxConvCurrent)) | |
240 | return count; | |
241 | ||
242 | child = child->next; | |
243 | count++; | |
244 | } | |
245 | ||
246 | return -1; | |
247 | } | |
248 | ||
249 | int wxChoice::GetSelection() const | |
250 | { | |
251 | wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid choice") ); | |
252 | ||
253 | GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) ); | |
254 | int count = 0; | |
255 | GList *child = menu_shell->children; | |
256 | while (child) | |
257 | { | |
258 | GtkBin *bin = GTK_BIN( child->data ); | |
259 | if (!bin->child) return count; | |
260 | child = child->next; | |
261 | count++; | |
262 | } | |
263 | ||
264 | return -1; | |
265 | } | |
266 | ||
267 | void wxChoice::SetString( int WXUNUSED(n), const wxString& WXUNUSED(string) ) | |
268 | { | |
269 | wxCHECK_RET( m_widget != NULL, wxT("invalid choice") ); | |
270 | ||
271 | wxFAIL_MSG(wxT("not implemented")); | |
272 | } | |
273 | ||
274 | wxString wxChoice::GetString( int n ) const | |
275 | { | |
276 | wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid choice") ); | |
277 | ||
278 | GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) ); | |
279 | int count = 0; | |
280 | GList *child = menu_shell->children; | |
281 | while (child) | |
282 | { | |
283 | GtkBin *bin = GTK_BIN( child->data ); | |
284 | if (count == n) | |
285 | { | |
286 | GtkLabel *label = (GtkLabel *) NULL; | |
287 | if (bin->child) label = GTK_LABEL(bin->child); | |
288 | if (!label) label = GTK_LABEL( GTK_BUTTON(m_widget)->child ); | |
289 | ||
290 | wxASSERT_MSG( label != NULL , wxT("wxChoice: invalid label") ); | |
291 | ||
292 | return wxString(label->label,*wxConvCurrent); | |
293 | } | |
294 | child = child->next; | |
295 | count++; | |
296 | } | |
297 | ||
298 | wxFAIL_MSG( wxT("wxChoice: invalid index in GetString()") ); | |
299 | ||
300 | return wxT(""); | |
301 | } | |
302 | ||
303 | int wxChoice::GetCount() const | |
304 | { | |
305 | wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid choice") ); | |
306 | ||
307 | GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) ); | |
308 | int count = 0; | |
309 | GList *child = menu_shell->children; | |
310 | while (child) | |
311 | { | |
312 | count++; | |
313 | child = child->next; | |
314 | } | |
315 | return count; | |
316 | } | |
317 | ||
318 | void wxChoice::SetSelection( int n ) | |
319 | { | |
320 | wxCHECK_RET( m_widget != NULL, wxT("invalid choice") ); | |
321 | ||
322 | int tmp = n; | |
323 | gtk_option_menu_set_history( GTK_OPTION_MENU(m_widget), (gint)tmp ); | |
324 | } | |
325 | ||
326 | void wxChoice::DisableEvents() | |
327 | { | |
328 | /* | |
329 | GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) ); | |
330 | GList *child = menu_shell->children; | |
331 | while (child) | |
332 | { | |
333 | gtk_signal_disconnect_by_func( GTK_OBJECT( child->data ), | |
334 | GTK_SIGNAL_FUNC(gtk_choice_clicked_callback), (gpointer*)this ); | |
335 | ||
336 | child = child->next; | |
337 | } | |
338 | */ | |
339 | } | |
340 | ||
341 | void wxChoice::EnableEvents() | |
342 | { | |
343 | /* | |
344 | GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) ); | |
345 | GList *child = menu_shell->children; | |
346 | while (child) | |
347 | { | |
348 | gtk_signal_connect( GTK_OBJECT( child->data ), "activate", | |
349 | GTK_SIGNAL_FUNC(gtk_choice_clicked_callback), (gpointer*)this ); | |
350 | ||
351 | child = child->next; | |
352 | } | |
353 | */ | |
354 | } | |
355 | ||
356 | void wxChoice::ApplyWidgetStyle() | |
357 | { | |
358 | SetWidgetStyle(); | |
359 | ||
360 | GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) ); | |
361 | ||
362 | gtk_widget_set_style( m_widget, m_widgetStyle ); | |
363 | gtk_widget_set_style( GTK_WIDGET( menu_shell ), m_widgetStyle ); | |
364 | ||
365 | GList *child = menu_shell->children; | |
366 | while (child) | |
367 | { | |
368 | gtk_widget_set_style( GTK_WIDGET( child->data ), m_widgetStyle ); | |
369 | ||
370 | GtkBin *bin = GTK_BIN( child->data ); | |
371 | GtkWidget *label = (GtkWidget *) NULL; | |
372 | if (bin->child) label = bin->child; | |
373 | if (!label) label = GTK_BUTTON(m_widget)->child; | |
374 | ||
375 | gtk_widget_set_style( label, m_widgetStyle ); | |
376 | ||
377 | child = child->next; | |
378 | } | |
379 | } | |
380 | ||
381 | size_t wxChoice::AppendHelper(GtkWidget *menu, const wxString& item) | |
382 | { | |
383 | GtkWidget *menu_item = gtk_menu_item_new_with_label( item.mbc_str() ); | |
384 | ||
385 | size_t index; | |
386 | if ( m_strings ) | |
387 | { | |
388 | // sorted control, need to insert at the correct index | |
389 | index = m_strings->Add(item); | |
390 | ||
391 | gtk_menu_insert( GTK_MENU(menu), menu_item, index ); | |
392 | ||
393 | if ( index ) | |
394 | { | |
395 | m_clientList.Insert( m_clientList.Item(index - 1), | |
396 | (wxObject*) NULL ); | |
397 | } | |
398 | else | |
399 | { | |
400 | m_clientList.Insert( (wxObject*) NULL ); | |
401 | } | |
402 | } | |
403 | else | |
404 | { | |
405 | // normal control, just append | |
406 | gtk_menu_append( GTK_MENU(menu), menu_item ); | |
407 | ||
408 | m_clientList.Append( (wxObject*) NULL ); | |
409 | ||
410 | // don't call wxChoice::GetCount() from here because it doesn't work | |
411 | // if we're called from ctor (and GtkMenuShell is still NULL) | |
412 | index = m_clientList.GetCount() - 1; | |
413 | } | |
414 | ||
415 | if (GTK_WIDGET_REALIZED(m_widget)) | |
416 | { | |
417 | gtk_widget_realize( menu_item ); | |
418 | gtk_widget_realize( GTK_BIN(menu_item)->child ); | |
419 | ||
420 | if (m_widgetStyle) ApplyWidgetStyle(); | |
421 | } | |
422 | ||
423 | gtk_signal_connect( GTK_OBJECT( menu_item ), "activate", | |
424 | GTK_SIGNAL_FUNC(gtk_choice_clicked_callback), (gpointer*)this ); | |
425 | ||
426 | gtk_widget_show( menu_item ); | |
427 | ||
428 | // return the index of the item in the control | |
429 | return index; | |
430 | } | |
431 | ||
432 | #endif |