Resolves: tdf#132581 allow disabling the auto-group RadioButton feature

the older way of doing things is to dig around contiguous radiobuttons to see
what is part of the group, while the contemporary one is to explicitly use
group() to set the members. A problem of the legacy way of doing it is that the
results during setup and teardown of a collection of radiobuttons can be
misleading.

Change-Id: I6c590d0fb6fc6db3f5e5ba4397a62930a5c8f3f0
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/93567
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>

1 files changed, 9 insertions, 1 deletions

diff --git a/include/vcl/button.hxx b/include/vcl/button.hxx
index 14c936f0ddee..d9e2106ea6d5 100644
--- a/include/vcl/button.hxx
+++ b/include/vcl/button.hxx
@@ -283,6 +283,7 @@ private:
     bool            mbChecked;
     bool            mbRadioCheck;
     bool            mbStateChanged;
+    bool            mbUsesExplicitGroup;
     Link<RadioButton&,void> maToggleHdl;
     SAL_DLLPRIVATE void     ImplInitRadioButtonData();
     SAL_DLLPRIVATE WinBits  ImplInitStyle( const vcl::Window* pPrevWindow, WinBits nStyle );
@@ -317,7 +318,14 @@ protected:
     void            ImplAdjustNWFSizes() override;
 
 public:
-    explicit        RadioButton( vcl::Window* pParent, WinBits nWinStyle = 0 );
+    /*
+     bUsesExplicitGroup of true means that group() is used to set what radiobuttons are part of a group
+     while false means that contiguous radiobuttons are considered part of a group where WB_GROUP designates
+     the start of the group and all contiguous radiobuttons without WB_GROUP set form the rest of the group.
+
+     true is fairly straightforward, false leads to trick situations and is the legacy case
+    */
+    explicit        RadioButton(vcl::Window* pParent, bool bUsesExplicitGroup = true, WinBits nWinStyle = 0);
     virtual         ~RadioButton() override;
     virtual void    dispose() override;