Files
wxWidgets/src/xrc/xh_chckb.cpp
Randalphwa cb8c0dfb0d Add undetermined state to wxCheckBoxXmlHandler
3-state checkboxes can have their initial value set to checked
or undetermined -- this adds support for the undetermined
state to the handler (only allowed if the style includes wxCHK_3STATE).

Closes #22468.
2022-06-01 16:55:31 +02:00

89 lines
2.5 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: src/xrc/xh_chckb.cpp
// Purpose: XRC resource for wxCheckBox
// Author: Bob Mitchell
// Created: 2000/03/21
// Copyright: (c) 2000 Bob Mitchell and Verant Interactive
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#if wxUSE_XRC && wxUSE_CHECKBOX
#include "wx/xrc/xh_chckb.h"
#ifndef WX_PRECOMP
#include "wx/checkbox.h"
#endif
wxIMPLEMENT_DYNAMIC_CLASS(wxCheckBoxXmlHandler, wxXmlResourceHandler);
wxCheckBoxXmlHandler::wxCheckBoxXmlHandler()
: wxXmlResourceHandler()
{
XRC_ADD_STYLE(wxCHK_2STATE);
XRC_ADD_STYLE(wxCHK_3STATE);
XRC_ADD_STYLE(wxCHK_ALLOW_3RD_STATE_FOR_USER);
XRC_ADD_STYLE(wxALIGN_RIGHT);
AddWindowStyles();
}
wxObject *wxCheckBoxXmlHandler::DoCreateResource()
{
XRC_MAKE_INSTANCE(control, wxCheckBox)
control->Create(m_parentAsWindow,
GetID(),
GetText(wxT("label")),
GetPosition(), GetSize(),
GetStyle(),
wxDefaultValidator,
GetName());
switch (GetLong("checked", wxCHK_UNCHECKED))
{
case wxCHK_UNCHECKED:
// Nothing to do here, we could call SetValue() but the default state
// is unchecked anyhow.
break;
case wxCHK_CHECKED:
control->SetValue(true);
break;
case wxCHK_UNDETERMINED:
// While just trying to set it would generate an assert if wxCHK_3STATE
// is not set, prefer to give an error here as we have more information
// about the problem.
if ( !control->HasFlag(wxCHK_3STATE) )
{
ReportParamError("checked",
"A checkbox must have wxCHK_3STATE style to use wxCHK_UNDETERMINED");
break;
}
control->Set3StateValue(wxCHK_UNDETERMINED);
break;
default:
ReportParamError("checked",
wxString::Format("Unknown checkbox state: \"%s\"",
GetParamValue("checked")));
break;
}
SetupWindow(control);
return control;
}
bool wxCheckBoxXmlHandler::CanHandle(wxXmlNode *node)
{
return IsOfClass(node, wxT("wxCheckBox"));
}
#endif // wxUSE_XRC && wxUSE_CHECKBOX