// Created: 06.08.01
// RCS-ID: $Id$
// Copyright: (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// License: wxWindows license
+// License: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
// ============================================================================
// headers
// ----------------------------------------------------------------------------
-#ifdef __GNUG__
- #pragma implementation "containr.h"
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#include "wx/containr.h"
+#ifdef __WXMAC__
+ #include "wx/scrolbar.h"
+#endif
+
+#ifdef __WXMSW__
+ #include "wx/radiobut.h"
+#endif
+
// ============================================================================
// implementation
// ============================================================================
m_winLastFocused =
m_winTmpDefault =
m_winDefault = NULL;
+ m_inSetFocus = false;
+}
+
+bool wxControlContainer::AcceptsFocus() const
+{
+ // if we're not shown or disabled, we can't accept focus
+ if ( m_winParent->IsShown() && m_winParent->IsEnabled() )
+ {
+ // otherwise we can accept focus either if we have no children at all
+ // (in this case we're probably not used as a container) or only when
+ // at least one child will accept focus
+ wxWindowList::compatibility_iterator node = m_winParent->GetChildren().GetFirst();
+ if ( !node )
+ return true;
+
+#ifdef __WXMAC__
+ // wxMac has eventually the two scrollbars as children, they don't count
+ // as real children in the algorithm mentioned above
+ bool hasRealChildren = false ;
+#endif
+
+ while ( node )
+ {
+ wxWindow *child = node->GetData();
+
+ if ( child->AcceptsFocus() )
+ {
+ return true;
+ }
+
+#ifdef __WXMAC__
+ wxScrollBar *sb = wxDynamicCast( child , wxScrollBar ) ;
+ if ( sb == NULL || !m_winParent->MacIsWindowScrollbar( sb ) )
+ hasRealChildren = true ;
+#endif
+ node = node->GetNext();
+ }
+
+#ifdef __WXMAC__
+ if ( !hasRealChildren )
+ return true ;
+#endif
+ }
+
+ return false;
}
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
// the node of the children list from which we should start looking for the
// next acceptable child
- wxWindowList::Node *node, *start_node;
+ wxWindowList::compatibility_iterator node, start_node;
// we should start from the first/last control and not from the one which
// had focus the last time if we're propagating the event downwards because
node = forward ? children.GetFirst() : children.GetLast();
// we want to cycle over all nodes
- start_node = (wxWindowList::Node *)NULL;
+ start_node = wxWindowList::compatibility_iterator();
}
else
{
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 );
}
else
{
- start_node = (wxWindowList::Node *)NULL;
+ start_node = wxWindowList::compatibility_iterator();
}
if ( !start_node && m_winLastFocused )
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);
if ( !child->GetEventHandler()->ProcessEvent(event) )
{
// set it first in case SetFocusFromKbd() results in focus
}
//else: the child manages its focus itself
- event.Skip( FALSE );
+ event.Skip( false );
return;
}
wxLogTrace(_T("focus"), _T("SetFocus on wxPanel 0x%08lx."),
(unsigned long)m_winParent->GetHandle());
+ if (m_inSetFocus)
+ return true;
+
// when the panel gets the focus we move the focus to either the last
// window that had the focus or the first one that can get it unless the
// focus had been already set to some other child
if ( win == m_winParent )
{
// our child already has focus, don't take it away from it
- return TRUE;
+ return true;
}
if ( win->IsTopLevel() )
win = win->GetParent();
}
- return SetFocusToChild();
+ // protect against infinite recursion:
+ m_inSetFocus = true;
+
+ bool ret = SetFocusToChild();
+
+ m_inSetFocus = false;
+
+ return ret;
}
void wxControlContainer::HandleOnFocus(wxFocusEvent& event)
bool wxSetFocusToChild(wxWindow *win, wxWindow **childLastFocused)
{
- wxCHECK_MSG( win, FALSE, _T("wxSetFocusToChild(): invalid window") );
- wxCHECK_MSG( childLastFocused, FALSE,
+ wxCHECK_MSG( win, false, _T("wxSetFocusToChild(): invalid window") );
+ wxCHECK_MSG( childLastFocused, false,
_T("wxSetFocusToChild(): NULL child poonter") );
if ( *childLastFocused )
// not SetFocusFromKbd(): we're restoring focus back to the old
// window and not setting it as the result of a kbd action
(*childLastFocused)->SetFocus();
- return TRUE;
+ return true;
}
else
{
}
// set the focus to the first child who wants it
- wxWindowList::Node *node = win->GetChildren().GetFirst();
+ wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
while ( node )
{
wxWindow *child = node->GetData();
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());
- *childLastFocused = child; // should be redundant, but it is not
+ *childLastFocused = child;
child->SetFocusFromKbd();
- return TRUE;
+ return true;
}
node = node->GetNext();
}
- return FALSE;
+ return false;
}
+
projects / wxWidgets.git / blobdiff