initial commit

Signed-off-by: Peter Siegmund <mars3142@noreply.mars3142.dev>

libs/wxWidgets-3.3.1/include/wx/persist/radiobut.h

@@ -0,0 +1,113 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/persist/radiobut.h
+// Purpose:     Persistence support for wxRadioButton.
+// Author:      Vadim Zeitlin
+// Created:     2025-06-12
+// Copyright:   (c) 2025 Vadim Zeitlin
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_PERSIST_RADIOBUT_H_
+#define _WX_PERSIST_RADIOBUT_H_
+
+#include "wx/persist/window.h"
+
+#include "wx/radiobut.h"
+
+#if wxUSE_RADIOBTN
+
+// ----------------------------------------------------------------------------
+// string constants used by wxPersistentRadioButton
+// ----------------------------------------------------------------------------
+
+#define wxPERSIST_RADIOBUTTON_KIND wxASCII_STR("RadioButton")
+
+#define wxPERSIST_RADIOBUTTON_VALUE wxASCII_STR("Value")
+
+// ----------------------------------------------------------------------------
+// wxPersistentRadioButton: supports saving/restoring radio buttons state
+// ----------------------------------------------------------------------------
+
+// This class should be always used with the first button in a group of radio
+// buttons and it saves its state as an integer indicating the offset of the
+// selected radio button in this group.
+//
+// Currently radio buttons with wxRB_SINGLE style are not supported. While it
+// wouldn't be very difficult to add support for them if anybody really needs
+// it, it seems relatively unlikely, so for now we don't bother to do it.
+
+class wxPersistentRadioButton : public wxPersistentWindow<wxRadioButton>
+{
+public:
+    explicit wxPersistentRadioButton(wxRadioButton* radiobutton)
+        : wxPersistentWindow<wxRadioButton>(radiobutton)
+    {
+        wxASSERT_MSG( !radiobutton->HasFlag(wxRB_SINGLE),
+                      "wxPersistentRadioButton doesn't support wxRB_SINGLE" );
+
+        wxASSERT_MSG( radiobutton->HasFlag(wxRB_GROUP),
+                      "wxPersistentRadioButton should be used with the first "
+                      "radio button in a group" );
+    }
+
+    virtual void Save() const override
+    {
+        const wxRadioButton* button = Get();
+        for ( int n = 0;; ++n )
+        {
+            if ( button->GetValue() )
+            {
+                // We found the selected button, save its index.
+                SaveValue(wxPERSIST_RADIOBUTTON_VALUE, n);
+                break;
+            }
+
+            button = button->GetNextInGroup();
+            if ( !button )
+            {
+                wxFAIL_MSG("Didn't find a selected radio button in the group?");
+                break;
+            }
+        }
+    }
+
+    virtual bool Restore() override
+    {
+        int value;
+        if ( !RestoreValue(wxPERSIST_RADIOBUTTON_VALUE, &value) )
+            return false;
+
+        wxRadioButton* button = Get();
+        for ( int n = 0;; ++n )
+        {
+            if ( n == value )
+            {
+                // We found the button with the saved index, set its value.
+                button->SetValue(true);
+                break;
+            }
+
+            button = button->GetNextInGroup();
+
+            if ( !button )
+            {
+                // The saved value is invalid, silently ignore it because there
+                // doesn't seem to be much else that we can do in this case.
+                break;
+            }
+        }
+
+        return true;
+    }
+
+    virtual wxString GetKind() const override { return wxPERSIST_RADIOBUTTON_KIND; }
+};
+
+inline wxPersistentObject *wxCreatePersistentObject(wxRadioButton* radiobutton)
+{
+    return new wxPersistentRadioButton(radiobutton);
+}
+
+#endif // wxUSE_RADIOBTN
+
+#endif // _WX_PERSIST_RADIOBUT_H_