X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c9d59ee7e0cbe4acae6153adafb5ddce9a4e65dd..588c80dea16b3ab32c7f1f8f15b62eb4450a20a9:/src/common/containr.cpp

diff --git a/src/common/containr.cpp b/src/common/containr.cpp
index 3d55aa14a9..e92abb9cbd 100644
--- a/src/common/containr.cpp
+++ b/src/common/containr.cpp
@@ -17,10 +17,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation "containr.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -40,6 +36,10 @@
     #include "wx/scrolbar.h"
 #endif
 
+#ifdef __WXMSW__
+    #include "wx/radiobut.h"
+#endif
+
 // ============================================================================
 // implementation
 // ============================================================================
@@ -149,6 +149,111 @@ void wxControlContainer::SetLastFocus(wxWindow *win)
     }
 }
 
+// --------------------------------------------------------------------
+// The following four functions are used to find other radio buttons
+// within the same group. Used by wxSetFocusToChild on wxMSW
+// --------------------------------------------------------------------
+
+#ifdef __WXMSW__
+
+wxRadioButton* wxGetPreviousButtonInGroup(wxRadioButton *btn)
+{
+    if ( btn->HasFlag(wxRB_GROUP) || btn->HasFlag(wxRB_SINGLE) )
+        return NULL;
+
+    const wxWindowList& siblings = btn->GetParent()->GetChildren();
+    wxWindowList::compatibility_iterator nodeThis = siblings.Find(btn);
+    wxCHECK_MSG( nodeThis, NULL, _T("radio button not a child of its parent?") );
+
+    // Iterate over all previous siblings until we find the next radio button
+    wxWindowList::compatibility_iterator nodeBefore = nodeThis->GetPrevious();
+    wxRadioButton *prevBtn = 0;
+    while (nodeBefore)
+    {
+        prevBtn = wxDynamicCast(nodeBefore->GetData(), wxRadioButton);
+        if (prevBtn)
+            break;
+
+        nodeBefore = nodeBefore->GetPrevious();
+    }
+
+    if (!prevBtn || prevBtn->HasFlag(wxRB_SINGLE))
+    {
+        // no more buttons in group
+        return NULL;
+    }
+    else
+        return prevBtn;
+}
+
+wxRadioButton* wxGetNextButtonInGroup(wxRadioButton *btn)
+{
+    if (btn->HasFlag(wxRB_SINGLE))
+        return NULL;
+
+    const wxWindowList& siblings = btn->GetParent()->GetChildren();
+    wxWindowList::compatibility_iterator nodeThis = siblings.Find(btn);
+    wxCHECK_MSG( nodeThis, NULL, _T("radio button not a child of its parent?") );
+
+    // Iterate over all previous siblings until we find the next radio button
+    wxWindowList::compatibility_iterator nodeNext = nodeThis->GetNext();
+    wxRadioButton *nextBtn = 0;
+    while (nodeNext)
+    {
+        nextBtn = wxDynamicCast(nodeNext->GetData(), wxRadioButton);
+        if (nextBtn)
+            break;
+
+        nodeNext = nodeNext->GetNext();
+    }
+
+    if ( !nextBtn || nextBtn->HasFlag(wxRB_GROUP) || nextBtn->HasFlag(wxRB_SINGLE) )
+    {
+        // no more buttons or the first button of the next group
+        return NULL;
+    }
+    else
+        return nextBtn;
+}
+
+wxRadioButton* wxGetFirstButtonInGroup(wxRadioButton *btn)
+{
+    while (true)
+    {
+        wxRadioButton* prevBtn = wxGetPreviousButtonInGroup(btn);
+        if (!prevBtn)
+            return btn;
+
+        btn = prevBtn;
+    }
+}
+
+wxRadioButton* wxGetSelectedButtonInGroup(wxRadioButton *btn)
+{
+    // Find currently selected button
+    if (btn->GetValue())
+        return btn;
+
+    if (btn->HasFlag(wxRB_SINGLE))
+        return NULL;
+
+    wxRadioButton *selBtn;
+
+    // First check all previous buttons
+    for (selBtn = wxGetPreviousButtonInGroup(btn); selBtn; selBtn = wxGetPreviousButtonInGroup(selBtn))
+        if (selBtn->GetValue())
+            return selBtn;
+
+    // Now all following buttons
+    for (selBtn = wxGetNextButtonInGroup(btn); selBtn; selBtn = wxGetNextButtonInGroup(selBtn))
+        if (selBtn->GetValue())
+            return selBtn;
+
+    return NULL;
+}
+
+#endif // __WXMSW__
+
 // ----------------------------------------------------------------------------
 // Keyboard handling - this is the place where the TAB traversal logic is
 // implemented. As this code is common to all ports, this ensures consistent
@@ -220,6 +325,12 @@ void wxControlContainer::HandleOnNavigationKey( wxNavigationKeyEvent& event )
 
         if ( winFocus )
         {
+#ifdef __WXMSW__
+            // If we are in a radio button group, start from the first item in the
+            // group
+            if ( event.IsFromTab() && wxIsKindOf(winFocus, wxRadioButton ) )
+                winFocus = wxGetFirstButtonInGroup((wxRadioButton*)winFocus);
+#endif
             // ok, we found the focus - now is it our child?
             start_node = children.Find( winFocus );
         }
@@ -287,13 +398,59 @@ void wxControlContainer::HandleOnNavigationKey( wxNavigationKeyEvent& event )
 
         wxWindow *child = node->GetData();
 
-        if ( child->AcceptsFocusFromKeyboard() )
+#ifdef __WXMSW__
+        bool canSelectRadioButton = true;
+        if (!event.IsFromTab())
+        {
+            // If navigating using cursor keys, make sure not to navigate out of a radio button group.
+            if (m_winLastFocused && wxIsKindOf(m_winLastFocused, wxRadioButton))
+            {
+                if (!wxIsKindOf(child, wxRadioButton))
+                {
+                    child = forward ?
+                                wxGetNextButtonInGroup((wxRadioButton*)m_winLastFocused) :
+                                wxGetPreviousButtonInGroup((wxRadioButton*)m_winLastFocused);
+                    if (!child)
+                    {
+                        event.Skip(false);
+                        return;
+                    }
+                }
+            }
+        }
+        else
+        {
+            // If navigating using tabs, skip all but the first radio button in a group.
+            if (wxIsKindOf(child, wxRadioButton))
+            {
+                if (wxGetPreviousButtonInGroup((wxRadioButton*)child))
+                    canSelectRadioButton = false;
+            }
+        }
+#else
+        static bool canSelectRadioButton = true;
+#endif
+
+        if ( child->AcceptsFocusFromKeyboard() && canSelectRadioButton )
         {
             // if we're setting the focus to a child panel we should prevent it
             // from giving it to the child which had the focus the last time
             // and instead give it to the first/last child depending from which
             // direction we're coming
             event.SetEventObject(m_winParent);
+
+#if defined(__WXMSW__)
+            // we need to hop to the next activated
+            // radio button, not just the next radio
+            // button under MSW
+            if (wxIsKindOf(child, wxRadioButton) && event.IsFromTab())
+            {
+                wxRadioButton *rb = wxGetSelectedButtonInGroup((wxRadioButton*)child);
+                if (rb)
+                    child = rb;
+            }
+#endif // __WXMSW__
+
             // disable propagation for this call as otherwise the event might
             // bounce back to us.
             wxPropagationDisabler disableProp(event);
@@ -434,6 +591,18 @@ bool wxSetFocusToChild(wxWindow *win, wxWindow **childLastFocused)
 
         if ( child->AcceptsFocusFromKeyboard() && !child->IsTopLevel() )
         {
+#ifdef __WXMSW__
+            // If a radiobutton is the first focusable child, search for the
+            // selected radiobutton in the same group
+            wxRadioButton* btn = wxDynamicCast(child, wxRadioButton);
+            if (btn)
+            {
+                wxRadioButton* selected = wxGetSelectedButtonInGroup(btn);
+                if (selected)
+                    child = selected;
+            }
+#endif
+
             wxLogTrace(_T("focus"),
                        _T("SetFocusToChild() => first child (0x%08lx)."),
                        (unsigned long)child->GetHandle());