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fix crash which happened if you called SetAttr(NULL) followed by SetAttr(attr) (...
[wxWidgets.git] / src / xrc / xh_choic.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/xrc/xh_choic.cpp
3 // Purpose: XRC resource for wxChoice
4 // Author: Bob Mitchell
5 // Created: 2000/03/21
6 // RCS-ID: $Id$
7 // Copyright: (c) 2000 Bob Mitchell and Verant Interactive
8 // Licence: wxWindows licence
9 /////////////////////////////////////////////////////////////////////////////
10
11 // For compilers that support precompilation, includes "wx.h".
12 #include "wx/wxprec.h"
13
14 #ifdef __BORLANDC__
15 #pragma hdrstop
16 #endif
17
18 #if wxUSE_XRC && wxUSE_CHOICE
19
20 #include "wx/xrc/xh_choic.h"
21
22 #ifndef WX_PRECOMP
23 #include "wx/intl.h"
24 #include "wx/choice.h"
25 #endif
26
27 IMPLEMENT_DYNAMIC_CLASS(wxChoiceXmlHandler, wxXmlResourceHandler)
28
29 wxChoiceXmlHandler::wxChoiceXmlHandler()
30 : wxXmlResourceHandler() , m_insideBox(false)
31 {
32 XRC_ADD_STYLE(wxCB_SORT);
33 AddWindowStyles();
34 }
35
36 wxObject *wxChoiceXmlHandler::DoCreateResource()
37 {
38 if( m_class == wxT("wxChoice"))
39 {
40 // find the selection
41 long selection = GetLong(wxT("selection"), -1);
42
43 // need to build the list of strings from children
44 m_insideBox = true;
45 CreateChildrenPrivately(NULL, GetParamNode(wxT("content")));
46
47 XRC_MAKE_INSTANCE(control, wxChoice)
48
49 control->Create(m_parentAsWindow,
50 GetID(),
51 GetPosition(), GetSize(),
52 strList,
53 GetStyle(),
54 wxDefaultValidator,
55 GetName());
56
57 if (selection != -1)
58 control->SetSelection(selection);
59
60 SetupWindow(control);
61
62 strList.Clear(); // dump the strings
63
64 return control;
65 }
66 else
67 {
68 // on the inside now.
69 // handle <item>Label</item>
70
71 // add to the list
72 wxString str = GetNodeContent(m_node);
73 if (m_resource->GetFlags() & wxXRC_USE_LOCALE)
74 str = wxGetTranslation(str, m_resource->GetDomain());
75 strList.Add(str);
76
77 return NULL;
78 }
79 }
80
81 bool wxChoiceXmlHandler::CanHandle(wxXmlNode *node)
82 {
83 return (IsOfClass(node, wxT("wxChoice")) ||
84 (m_insideBox && node->GetName() == wxT("item")));
85 }
86
87 #endif // wxUSE_XRC && wxUSE_CHOICE