made wxTextFile work in Unicode; also made it possible to use it with non seekable...

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

diff --git a/src/common/containr.cpp b/src/common/containr.cpp
index 8b62297a92db06dd433864325cf8908ebb90ea39..185f8098d9f3430adf14a3fa374c75e95fda34bb 100644 (file)
--- a/src/common/containr.cpp
+++ b/src/common/containr.cpp
@@ -17,10 +17,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // 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"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 


@@ -44,6 +40,9 @@
     #include "wx/radiobut.h"
 #endif
 
     #include "wx/radiobut.h"
 #endif
 

+// trace mask for focus messages
+#define TRACE_FOCUS _T("focus")
+

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


@@ -133,13 +132,13 @@ void wxControlContainer::SetLastFocus(wxWindow *win)
 
         if ( win )
         {
 
         if ( win )
         {

-            wxLogTrace(_T("focus"), _T("Set last focus to %s(%s)"),
+            wxLogTrace(TRACE_FOCUS, _T("Set last focus to %s(%s)"),

                        win->GetClassInfo()->GetClassName(),
                        win->GetLabel().c_str());
         }
         else
         {
                        win->GetClassInfo()->GetClassName(),
                        win->GetLabel().c_str());
         }
         else
         {

-            wxLogTrace(_T("focus"), _T("No more last focus"));
+            wxLogTrace(TRACE_FOCUS, _T("No more last focus"));

         }
     }
 
         }
     }
 


@@ -153,6 +152,123 @@ 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;
+    }
+
+    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;
+    }
+
+    return nextBtn;
+}
+
+wxRadioButton* wxGetFirstButtonInGroup(wxRadioButton *btn)
+{
+    while (true)
+    {
+        wxRadioButton* prevBtn = wxGetPreviousButtonInGroup(btn);
+        if (!prevBtn)
+            return btn;
+
+        btn = prevBtn;
+    }
+}
+
+wxRadioButton* wxGetLastButtonInGroup(wxRadioButton *btn)
+{
+    while (true)
+    {
+        wxRadioButton* nextBtn = wxGetNextButtonInGroup(btn);
+        if (!nextBtn)
+            return btn;
+
+        btn = nextBtn;
+    }
+}
+
+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
 // ----------------------------------------------------------------------------
 // Keyboard handling - this is the place where the TAB traversal logic is
 // implemented. As this code is common to all ports, this ensures consistent


@@ -186,7 +302,7 @@ void wxControlContainer::HandleOnNavigationKey( wxNavigationKeyEvent& event )
     }
 
     // where are we going?
     }
 
     // where are we going?

-    bool forward = event.GetDirection();
+    const bool forward = event.GetDirection();

 
     // 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


@@ -203,11 +319,8 @@ void wxControlContainer::HandleOnNavigationKey( wxNavigationKeyEvent& event )
 
         // start from first or last depending on where we're going
         node = forward ? children.GetFirst() : children.GetLast();
 
         // start from first or last depending on where we're going
         node = forward ? children.GetFirst() : children.GetLast();

-
-        // we want to cycle over all nodes
-        start_node = wxWindowList::compatibility_iterator();

     }
     }

-    else
+    else // going up

     {
         // try to find the child which has the focus currently
 
     {
         // try to find the child which has the focus currently
 


@@ -224,13 +337,15 @@ void wxControlContainer::HandleOnNavigationKey( wxNavigationKeyEvent& event )
 
         if ( winFocus )
         {
 
         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 );
         }
             // ok, we found the focus - now is it our child?
             start_node = children.Find( winFocus );
         }

-        else
-        {
-            start_node = wxWindowList::compatibility_iterator();
-        }

 
         if ( !start_node && m_winLastFocused )
         {
 
         if ( !start_node && m_winLastFocused )
         {


@@ -251,14 +366,24 @@ void wxControlContainer::HandleOnNavigationKey( wxNavigationKeyEvent& event )
     }
 
     // we want to cycle over all elements passing by NULL
     }
 
     // we want to cycle over all elements passing by NULL

-    while ( node != start_node )
+    for ( ;; )

     {
     {

+        // don't go into infinite loop
+        if ( start_node && node && node == start_node )
+            break;
+

         // Have we come to the last or first item on the panel?
         if ( !node )
         {
         // Have we come to the last or first item on the panel?
         if ( !node )
         {

+            if ( !start_node )
+            {
+                // exit now as otherwise we'd loop forever
+                break;
+            }
+

             if ( !goingDown )
             {
             if ( !goingDown )
             {

-                // Check if our (may be grand) parent is another panel: if this
+                // Check if our (maybe grand) parent is another panel: if this

                 // is the case, they will know what to do with this navigation
                 // key and so give them the chance to process it instead of
                 // looping inside this panel (normally, the focus will go to
                 // is the case, they will know what to do with this navigation
                 // key and so give them the chance to process it instead of
                 // looping inside this panel (normally, the focus will go to


@@ -291,14 +416,63 @@ void wxControlContainer::HandleOnNavigationKey( wxNavigationKeyEvent& event )
 
         wxWindow *child = node->GetData();
 
 
         wxWindow *child = node->GetData();
 

-#if defined(__WXMSW__) && !defined(__WXPALMOS__)
-        bool is_not_msw_rb = !m_winLastFocused ||
-                                !wxIsKindOf(m_winLastFocused,wxRadioButton);
-#else
-        static const bool is_not_msw_rb = true;
-#endif
+#ifdef __WXMSW__
+        if ( event.IsFromTab() )
+        {
+            if ( wxIsKindOf(child, wxRadioButton) )
+            {
+                // only radio buttons with either wxRB_GROUP or wxRB_SINGLE
+                // can be tabbed to
+                if ( child->HasFlag(wxRB_GROUP) )
+                {
+                    // need to tab into the active button within a group
+                    wxRadioButton *rb = wxGetSelectedButtonInGroup((wxRadioButton*)child);
+                    if ( rb )
+                        child = rb;
+                }
+                else if ( !child->HasFlag(wxRB_SINGLE) )
+                {
+                    node = forward ? node->GetNext() : node->GetPrevious();
+                    continue;
+                }
+            }
+        }
+        else if ( m_winLastFocused &&
+                  wxIsKindOf(m_winLastFocused, wxRadioButton) &&
+                  !m_winLastFocused->HasFlag(wxRB_SINGLE) )
+        {
+            // cursor keys don't navigate out of a radio button group so
+            // find the correct radio button to focus
+            if ( forward )
+            {
+                child = wxGetNextButtonInGroup((wxRadioButton*)m_winLastFocused);
+                if ( !child )
+                {
+                    // no next button in group, set it to the first button
+                    child = wxGetFirstButtonInGroup((wxRadioButton*)m_winLastFocused);
+                }
+            }
+            else
+            {
+                child = wxGetPreviousButtonInGroup((wxRadioButton*)m_winLastFocused);
+                if ( !child )
+                {
+                    // no previous button in group, set it to the last button
+                    child = wxGetLastButtonInGroup((wxRadioButton*)m_winLastFocused);
+                }
+            }

 
 

-        if ( child->AcceptsFocusFromKeyboard() && is_not_msw_rb )
+            if ( child == m_winLastFocused )
+            {
+                // must be a group consisting of only one button therefore
+                // no need to send a navigation event
+                event.Skip(false);
+                return;
+            }
+        }
+#endif // __WXMSW__
+
+        if ( child->AcceptsFocusFromKeyboard() )

         {
             // 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
         {
             // 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


@@ -306,35 +480,6 @@ void wxControlContainer::HandleOnNavigationKey( wxNavigationKeyEvent& event )
             // direction we're coming
             event.SetEventObject(m_winParent);
 
             // direction we're coming
             event.SetEventObject(m_winParent);
 

-#if defined(__WXMSW__) && !defined(__WXPALMOS__)
-            // we need to hop to the next activated
-            // radio button, not just the next radio
-            // button under MSW
-            if (wxIsKindOf(child,wxRadioButton))
-            {
-                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);
             // disable propagation for this call as otherwise the event might
             // bounce back to us.
             wxPropagationDisabler disableProp(event);


@@ -380,8 +525,8 @@ void wxControlContainer::HandleOnWindowDestroy(wxWindowBase *child)
 
 bool wxControlContainer::DoSetFocus()
 {
 
 bool wxControlContainer::DoSetFocus()
 {

-    wxLogTrace(_T("focus"), _T("SetFocus on wxPanel 0x%08lx."),
-               (unsigned long)m_winParent->GetHandle());
+    wxLogTrace(TRACE_FOCUS, _T("SetFocus on wxPanel 0x%p."),
+               m_winParent->GetHandle());

 
     if (m_inSetFocus)
         return true;
 
     if (m_inSetFocus)
         return true;


@@ -421,8 +566,8 @@ bool wxControlContainer::DoSetFocus()
 
 void wxControlContainer::HandleOnFocus(wxFocusEvent& event)
 {
 
 void wxControlContainer::HandleOnFocus(wxFocusEvent& event)
 {

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

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


@@ -451,9 +596,9 @@ bool wxSetFocusToChild(wxWindow *win, wxWindow **childLastFocused)
         // It might happen that the window got reparented
         if ( (*childLastFocused)->GetParent() == win )
         {
         // It might happen that the window got reparented
         if ( (*childLastFocused)->GetParent() == win )
         {

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

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


@@ -475,9 +620,21 @@ bool wxSetFocusToChild(wxWindow *win, wxWindow **childLastFocused)
 
         if ( child->AcceptsFocusFromKeyboard() && !child->IsTopLevel() )
         {
 
         if ( child->AcceptsFocusFromKeyboard() && !child->IsTopLevel() )
         {

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

 
             *childLastFocused = child;
             child->SetFocusFromKbd();
 
             *childLastFocused = child;
             child->SetFocusFromKbd();