small optimization in wxConfigPathChanger: don't change the path if it is already...

[wxWidgets.git] / src / common / containr.cpp

diff --git a/src/common/containr.cpp b/src/common/containr.cpp
index 04a7794bfefc093259ef3f2484c9475f88a6c573..84ca21a7ccdeeddae2df141cb706aed810ee10f7 100644 (file)
--- a/src/common/containr.cpp
+++ b/src/common/containr.cpp
@@ -6,7 +6,7 @@
 // Created:     06.08.01
 // RCS-ID:      $Id$
 // Copyright:   (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
 // Created:     06.08.01
 // RCS-ID:      $Id$
 // Copyright:   (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>

-// License:     wxWindows license
+// License:     wxWindows licence

 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================


@@ -17,7 +17,7 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)

     #pragma implementation "containr.h"
 #endif
 
     #pragma implementation "containr.h"
 #endif
 


@@ -36,6 +36,14 @@
 
 #include "wx/containr.h"
 
 
 #include "wx/containr.h"
 

+#ifdef __WXMAC__
+    #include "wx/scrolbar.h"
+#endif
+
+#ifdef __WXMSW__
+    #include "wx/radiobut.h"
+#endif
+

 // ============================================================================
 // implementation
 // ============================================================================
 // ============================================================================
 // implementation
 // ============================================================================


@@ -45,20 +53,104 @@ wxControlContainer::wxControlContainer(wxWindow *winParent)
     m_winParent = winParent;
 
     m_winLastFocused =
     m_winParent = winParent;
 
     m_winLastFocused =

+    m_winTmpDefault =

     m_winDefault = NULL;
     m_winDefault = NULL;

+    m_inSetFocus = false;

 }
 
 }
 

-void wxControlContainer::SetLastFocus(wxWindow *win)
+bool wxControlContainer::AcceptsFocus() const

 {
 {

-    // find the last _immediate_ child which got focus
-    while ( win && win != m_winParent )
+    // if we're not shown or disabled, we can't accept focus
+    if ( m_winParent->IsShown() && m_winParent->IsEnabled() )

     {
     {

-        win = win->GetParent();
+        // 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

     }
 
     }
 

-    wxASSERT_MSG( win, _T("attempt to set last focus to not a child?") );
+    return false;
+}
+
+void wxControlContainer::SetLastFocus(wxWindow *win)
+{
+    // the panel itself should never get the focus at all but if it does happen
+    // temporarily (as it seems to do under wxGTK), at the very least don't
+    // forget our previous m_winLastFocused
+    if ( win != m_winParent )
+    {
+        // if we're setting the focus
+        if ( win )
+        {
+            // find the last _immediate_ child which got focus
+            wxWindow *winParent = win;
+            while ( winParent != m_winParent )
+            {
+                win = winParent;
+                winParent = win->GetParent();
+
+                // Yes, this can happen, though in a totally pathological case.
+                // like when detaching a menubar from a frame with a child
+                // which has pushed itself as an event handler for the menubar.
+                // (under wxGTK)

 
 

-    m_winLastFocused = win;
+                wxASSERT_MSG( winParent,
+                              _T("Setting last focus for a window that is not our child?") );
+            }
+        }
+
+        m_winLastFocused = win;
+
+        if ( win )
+        {
+            wxLogTrace(_T("focus"), _T("Set last focus to %s(%s)"),
+                       win->GetClassInfo()->GetClassName(),
+                       win->GetLabel().c_str());
+        }
+        else
+        {
+            wxLogTrace(_T("focus"), _T("No more last focus"));
+        }
+    }
+
+    // propagate the last focus upwards so that our parent can set focus back
+    // to us if it loses it now and regains later
+    wxWindow *parent = m_winParent->GetParent();
+    if ( parent )
+    {
+        wxChildFocusEvent eventFocus(m_winParent);
+        parent->GetEventHandler()->ProcessEvent(eventFocus);
+    }

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -98,7 +190,7 @@ void wxControlContainer::HandleOnNavigationKey( wxNavigationKeyEvent& event )
 
     // the node of the children list from which we should start looking for the
     // next acceptable child
 
     // 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
 
     // 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


@@ -113,7 +205,7 @@ void wxControlContainer::HandleOnNavigationKey( wxNavigationKeyEvent& event )
         node = forward ? children.GetFirst() : children.GetLast();
 
         // we want to cycle over all nodes
         node = forward ? children.GetFirst() : children.GetLast();
 
         // we want to cycle over all nodes

-        start_node = (wxWindowList::Node *)NULL;
+        start_node = wxWindowList::compatibility_iterator();

     }
     else
     {
     }
     else
     {


@@ -137,7 +229,7 @@ void wxControlContainer::HandleOnNavigationKey( wxNavigationKeyEvent& event )
         }
         else
         {
         }
         else
         {

-            start_node = (wxWindowList::Node *)NULL;
+            start_node = wxWindowList::compatibility_iterator();

         }
 
         if ( !start_node && m_winLastFocused )
         }
 
         if ( !start_node && m_winLastFocused )


@@ -199,23 +291,65 @@ void wxControlContainer::HandleOnNavigationKey( wxNavigationKeyEvent& event )
 
         wxWindow *child = node->GetData();
 
 
         wxWindow *child = node->GetData();
 

-        if ( child->AcceptsFocusFromKeyboard() )
+#ifdef __WXMSW__
+        bool is_not_msw_rb = !m_winLastFocused ||
+                                !wxIsKindOf(m_winLastFocused,wxRadioButton);
+#else
+        static const bool is_not_msw_rb = true;
+#endif
+
+        if ( child->AcceptsFocusFromKeyboard() && is_not_msw_rb )

         {
             // 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 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 ( !child->GetEventHandler()->ProcessEvent(event) )
+
+#ifdef __WXMSW__
+            // we need to hop to the next activated
+            // radio button, not just the next radio
+            // button under MSW
+            if (wxIsKindOf(child,wxRadioButton))

             {
             {

-                // everything is simple: just give focus to it
-                child->SetFocus();
+                wxRadioButton *rb = (wxRadioButton*) child;
+                if (!rb->GetValue())
+                {
+                    for (;;)
+                    {
+                        wxWindowList::compatibility_iterator node = children.Find( child );
+                        if (forward)
+                            node = node->GetNext();
+                        else
+                            node = node->GetPrevious();
+                        if (!node)
+                            return; // this would probably an error
+                        child = node->GetData();
+                        if (!wxIsKindOf(child,wxRadioButton))
+                            continue;
+                        rb = (wxRadioButton*) child;
+                        if (rb->GetValue())
+                            break;
+                    }
+                }
+            }
+#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
+                // change too

                 m_winLastFocused = child;
                 m_winLastFocused = child;

+
+                // everything is simple: just give focus to it
+                child->SetFocusFromKbd();

             }
             //else: the child manages its focus itself
 
             }
             //else: the child manages its focus itself
 

-            event.Skip( FALSE );
+            event.Skip( false );

 
             return;
         }
 
             return;
         }


@@ -235,6 +369,9 @@ void wxControlContainer::HandleOnWindowDestroy(wxWindowBase *child)
 
     if ( child == m_winDefault )
         m_winDefault = NULL;
 
     if ( child == m_winDefault )
         m_winDefault = NULL;

+
+    if ( child == m_winTmpDefault )
+        m_winTmpDefault = NULL;

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -243,49 +380,52 @@ void wxControlContainer::HandleOnWindowDestroy(wxWindowBase *child)
 
 bool wxControlContainer::DoSetFocus()
 {
 
 bool wxControlContainer::DoSetFocus()
 {

-    wxLogTrace(_T("focus"), _T("SetFocus on wxPanel 0x%08x."),
-               m_winParent->GetHandle());
-
-    // If the panel gets the focus *by way of getting it set directly*
-    // we move the focus to the first window that can get it.
-
-    // VZ: no, we set the focus to the last window too. I don't understand why
-    //     should we make this distinction: if an app wants to set focus to
-    //     some precise control, it may always do it directly, but if we don't
-    //     use m_winLastFocused here, the focus won't be set correctly after a
-    //     notebook page change nor after frame activation under MSW (it calls
-    //     SetFocus too)
-    //
-    // RR: yes, when I the tab key to navigate in a panel with some controls and
-    //     a notebook and the focus jumps to the notebook (typically coming from
-    //     a button at the top) the notebook should focus the first child in the
-    //     current notebook page, not the last one which would otherwise get the
-    //     focus if you used the tab key to navigate from the current notebook
-    //     page to button at the bottom. See every page in the controls sample.
-    //
-    // VZ: ok, but this still doesn't (at least I don't see how it can) take
-    //     care of first/last child problem: i.e. if Shift-TAB is pressed in a
-    //     situation like above, the focus should be given to the last child,
-    //     not the first one (and not to the last focused one neither) - I
-    //     think my addition to OnNavigationKey() above takes care of it.
-    //     Keeping #ifdef __WXGTK__ for now, but please try removing it and see
-    //     what happens.
-    //
-    // RR: Removed for now. Let's see what happens..
-
-    return SetFocusToChild();
+    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
+
+    wxWindow *win = wxWindow::FindFocus();
+    while ( win )
+    {
+        if ( win == m_winParent )
+        {
+            // our child already has focus, don't take it away from it
+            return true;
+        }
+
+        if ( win->IsTopLevel() )
+        {
+            // don't look beyond the first top level parent - useless and
+            // unnecessary
+            break;
+        }
+
+        win = win->GetParent();
+    }
+
+    // protect against infinite recursion:
+    m_inSetFocus = true;
+
+    bool ret = SetFocusToChild();
+
+    m_inSetFocus = false;
+
+    return ret;

 }
 
 void wxControlContainer::HandleOnFocus(wxFocusEvent& event)
 {
 }
 
 void wxControlContainer::HandleOnFocus(wxFocusEvent& event)
 {

-    wxLogTrace(_T("focus"), _T("OnFocus on wxPanel 0x%08x, name: %s"),
-               m_winParent->GetHandle(),
+    wxLogTrace(_T("focus"), _T("OnFocus on wxPanel 0x%08lx, name: %s"),
+               (unsigned long)m_winParent->GetHandle(),

                m_winParent->GetName().c_str() );
 
                m_winParent->GetName().c_str() );
 

-    // If we panel got the focus *by way of getting clicked on*
-    // we move the focus to either the last window that had the
-    // focus or the first one that can get it.
-    (void)SetFocusToChild();
+    DoSetFocus();

 
     event.Skip();
 }
 
     event.Skip();
 }


@@ -302,21 +442,23 @@ bool wxControlContainer::SetFocusToChild()
 
 bool wxSetFocusToChild(wxWindow *win, wxWindow **childLastFocused)
 {
 
 bool wxSetFocusToChild(wxWindow *win, wxWindow **childLastFocused)
 {

-    wxCHECK_MSG( win, FALSE, _T("wxSetFocusToChild(): invalid window") );
+    wxCHECK_MSG( win, false, _T("wxSetFocusToChild(): invalid window") );
+    wxCHECK_MSG( childLastFocused, false,
+                 _T("wxSetFocusToChild(): NULL child poonter") );

 
     if ( *childLastFocused )
     {
 
     if ( *childLastFocused )
     {

-        // It might happen that the window got reparented or no longer accepts
-        // the focus.
-        if ( (*childLastFocused)->GetParent() == win &&
-             (*childLastFocused)->AcceptsFocusFromKeyboard() )
+        // It might happen that the window got reparented
+        if ( (*childLastFocused)->GetParent() == win )

         {
             wxLogTrace(_T("focus"),
         {
             wxLogTrace(_T("focus"),

-                       _T("SetFocusToChild() => last child (0x%08x)."),
-                       (*childLastFocused)->GetHandle());
+                       _T("SetFocusToChild() => last child (0x%08lx)."),
+                       (unsigned long)(*childLastFocused)->GetHandle());

 
 

+            // not SetFocusFromKbd(): we're restoring focus back to the old
+            // window and not setting it as the result of a kbd action

             (*childLastFocused)->SetFocus();
             (*childLastFocused)->SetFocus();

-            return TRUE;
+            return true;

         }
         else
         {
         }
         else
         {


@@ -326,7 +468,7 @@ bool wxSetFocusToChild(wxWindow *win, wxWindow **childLastFocused)
     }
 
     // set the focus to the first child who wants it
     }
 
     // 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();
     while ( node )
     {
         wxWindow *child = node->GetData();


@@ -334,16 +476,17 @@ bool wxSetFocusToChild(wxWindow *win, wxWindow **childLastFocused)
         if ( child->AcceptsFocusFromKeyboard() && !child->IsTopLevel() )
         {
             wxLogTrace(_T("focus"),
         if ( child->AcceptsFocusFromKeyboard() && !child->IsTopLevel() )
         {
             wxLogTrace(_T("focus"),

-                       _T("SetFocusToChild() => first child (0x%08x)."),
-                       child->GetHandle());
+                       _T("SetFocusToChild() => first child (0x%08lx)."),
+                       (unsigned long)child->GetHandle());

 
 

-            *childLastFocused = child;  // should be redundant, but it is not
-            child->SetFocus();
-            return TRUE;
+            *childLastFocused = child;
+            child->SetFocusFromKbd();
+            return true;

         }
 
         node = node->GetNext();
     }
 
         }
 
         node = node->GetNext();
     }
 

-    return FALSE;
+    return false;

 }
 }

+