]> git.saurik.com Git - wxWidgets.git/blobdiff - src/generic/treectrl.cpp
assert in GetNextItem() fixed (?)
[wxWidgets.git] / src / generic / treectrl.cpp
index 7e26246c1a2b39a269ef62c3e3f32174819feaa4..af2d4cf2e3e93b664d218e594e725c02824a4d4e 100644 (file)
 /////////////////////////////////////////////////////////////////////////////
 // Name:        treectrl.cpp
-// Purpose:
+// Purpose:     generic tree control implementation
 // Author:      Robert Roebling
 // Created:     01/02/97
+// Modified:    22/10/98 - almost total rewrite, simpler interface (VZ)
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
+// =============================================================================
+// declarations
+// =============================================================================
+
+// -----------------------------------------------------------------------------
+// headers
+// -----------------------------------------------------------------------------
+
 #ifdef __GNUG__
-#pragma implementation "treectrl.h"
+  #pragma implementation "treectrl.h"
+#endif
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+#pragma hdrstop
 #endif
 
 #include "wx/treectrl.h"
+#include "wx/generic/imaglist.h"
 #include "wx/settings.h"
 #include "wx/log.h"
+#include "wx/intl.h"
+#include "wx/dynarray.h"
+#include "wx/arrimpl.cpp"
+#include "wx/dcclient.h"
+#include "wx/msgdlg.h"
 
-//-----------------------------------------------------------------------------
-// wxTreeItem
-//-----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+// array types
+// -----------------------------------------------------------------------------
 
-IMPLEMENT_DYNAMIC_CLASS(wxTreeItem, wxObject)
+class WXDLLEXPORT wxGenericTreeItem;
 
-wxTreeItem::wxTreeItem()
-{
-  m_mask = 0;
-  m_itemId = 0;
-  m_state = 0;
-  m_stateMask = 0;
-  m_image = -1;
-  m_selectedImage = -1;
-  m_children = 0;
-  m_data = 0;
-};
+WX_DEFINE_ARRAY(wxGenericTreeItem *, wxArrayGenericTreeItems);
+WX_DEFINE_OBJARRAY(wxArrayTreeItemIds);
 
-//-----------------------------------------------------------------------------
-// wxTreeEvent
-//-----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
 
-IMPLEMENT_DYNAMIC_CLASS(wxTreeEvent,wxCommandEvent)
+static const int NO_IMAGE = -1;
 
-wxTreeEvent::wxTreeEvent( wxEventType commandType, int id ) :
-  wxCommandEvent( commandType, id )
+// -----------------------------------------------------------------------------
+// private classes
+// -----------------------------------------------------------------------------
+
+// a tree item
+class WXDLLEXPORT wxGenericTreeItem
 {
-  m_code = 0;
-  m_oldItem = 0;
-};
+public:
+    // ctors & dtor
+    wxGenericTreeItem() { m_data = NULL; }
+    wxGenericTreeItem( wxGenericTreeItem *parent,
+            const wxString& text,
+            wxDC& dc,
+            int image, int selImage,
+            wxTreeItemData *data );
 
-//-----------------------------------------------------------------------------
-// wxGenericTreeItem
-//-----------------------------------------------------------------------------
+    ~wxGenericTreeItem();
 
-IMPLEMENT_DYNAMIC_CLASS(wxGenericTreeItem,wxObject)
+    // trivial accessors
+    wxArrayGenericTreeItems& GetChildren() { return m_children; }
 
-wxGenericTreeItem::wxGenericTreeItem( wxGenericTreeItem *parent )
-{
-  Reset();
-  m_parent = parent;
-  m_hasHilight = FALSE;
-};
+    const wxString& GetText() const { return m_text; }
+    int GetImage(wxTreeItemIcon which = wxTreeItemIcon_Normal) const
+    { return m_images[which]; }
+    wxTreeItemData *GetData() const { return m_data; }
 
-wxGenericTreeItem::wxGenericTreeItem( wxGenericTreeItem *parent, const wxTreeItem& item, wxDC *dc )
-{
-  Reset();
-  SetItem( item, dc );
-  m_parent = parent;
-  m_hasHilight = FALSE;
-};
+    // returns the current image for the item (depending on its
+    // selected/expanded/whatever state)
+    int GetCurrentImage() const;
 
-void wxGenericTreeItem::SetItem( const wxTreeItem &item, wxDC *dc )
-{
-  if ((item.m_mask & wxTREE_MASK_HANDLE) == wxTREE_MASK_HANDLE)
-    m_itemId = item.m_itemId;
-  if ((item.m_mask & wxTREE_MASK_STATE) == wxTREE_MASK_STATE)
-    m_state = item.m_state;
-  if ((item.m_mask & wxTREE_MASK_TEXT) == wxTREE_MASK_TEXT)
-    m_text = item.m_text;
-  if ((item.m_mask & wxTREE_MASK_IMAGE) == wxTREE_MASK_IMAGE)
-    m_image = item.m_image;
-  if ((item.m_mask & wxTREE_MASK_SELECTED_IMAGE) == wxTREE_MASK_SELECTED_IMAGE)
-    m_selectedImage = item.m_selectedImage;
-  if ((item.m_mask & wxTREE_MASK_CHILDREN) == wxTREE_MASK_CHILDREN)
-    m_hasChildren = (item.m_children > 0);
-  if ((item.m_mask & wxTREE_MASK_DATA) == wxTREE_MASK_DATA)
-    m_data = item.m_data;
-  long lw = 0;
-  long lh = 0;
-  dc->GetTextExtent( m_text, &lw, &lh );
-  m_width = lw;
-  m_height = lh;
-};
+    void SetText( const wxString &text );
+    void SetImage(int image, wxTreeItemIcon which) { m_images[which] = image; }
+    void SetData(wxTreeItemData *data) { m_data = data; }
 
-void wxGenericTreeItem::SetText( const wxString &text, wxDC *dc )
-{
-  m_text = text;
-  long lw = 0;
-  long lh = 0;
-  dc->GetTextExtent( m_text, &lw, &lh );
-  m_width = lw;
-  m_height = lh;
-};
+    void SetHasPlus(bool has = TRUE) { m_hasPlus = has; }
 
-void wxGenericTreeItem::Reset()
-{
-  m_itemId = -1;
-  m_state = 0;
-  m_text = "";
-  m_image = -1;
-  m_selectedImage = -1;
-//  m_children = 0;
-  m_hasChildren = FALSE;
-  m_data = 0;
-  m_x = 0;
-  m_y = 0;
-  m_height = 0;
-  m_width = 0;
-  m_xCross = 0;
-  m_yCross = 0;
-  m_level = 0;
-  m_children.DeleteContents( TRUE );
-  m_isCollapsed = TRUE;
-  m_parent = NULL;
-};
+    void SetBold(bool bold) { m_isBold = bold; }
 
-void wxGenericTreeItem::GetItem( wxTreeItem &item ) const
-{
-  if ((item.m_mask & wxTREE_MASK_STATE) == wxTREE_MASK_STATE)
-    item.m_state = m_state;
-  if ((item.m_mask & wxTREE_MASK_TEXT) == wxTREE_MASK_TEXT)
-    item.m_text = m_text;
-  if ((item.m_mask & wxTREE_MASK_IMAGE) == wxTREE_MASK_IMAGE)
-    item.m_image = m_image;
-  if ((item.m_mask & wxTREE_MASK_SELECTED_IMAGE) == wxTREE_MASK_SELECTED_IMAGE)
-    item.m_selectedImage = m_selectedImage;
-  if ((item.m_mask & wxTREE_MASK_CHILDREN) == wxTREE_MASK_CHILDREN)
-    item.m_children = (int)m_hasChildren;
-  if ((item.m_mask & wxTREE_MASK_DATA) == wxTREE_MASK_DATA)
-    item.m_data = m_data;
-};
+    int GetX() const { return m_x; }
+    int GetY() const { return m_y; }
 
-bool wxGenericTreeItem::HasChildren()
-{
-  return m_hasChildren;
-};
+    void SetX(int x) { m_x = x; }
+    void SetY(int y) { m_y = y; }
 
-bool wxGenericTreeItem::HasPlus()
-{
-  if ( !HasChildren() )
-    return FALSE;
+    int  GetHeight() const { return m_height; }
+    int  GetWidth()  const { return m_width; }
 
-  return !IsExpanded();
-};
+    void SetHeight(int h) { m_height = h; }
+    void SetWidth(int w) { m_width = w; }
 
-int wxGenericTreeItem::NumberOfVisibleDescendents()
-{
-  int ret = m_children.Number();
-  wxNode *node = m_children.First();
-  while (node)
-  {
-    wxGenericTreeItem *item = (wxGenericTreeItem*)node->Data();
-    ret += item->NumberOfVisibleDescendents();
-    node = node->Next();
-  };
-  return ret;
-};
 
-int wxGenericTreeItem::NumberOfVisibleChildren()
-{
-  return m_isCollapsed ? 0 : m_children.Number();
-};
+    wxGenericTreeItem *GetParent() const { return m_parent; }
 
-wxGenericTreeItem *wxGenericTreeItem::FindItem( long itemId ) const
-{
-  if (m_itemId == itemId) return (wxGenericTreeItem*)(this);
-  wxNode *node = m_children.First();
-  while (node)
-  {
-    wxGenericTreeItem *item = (wxGenericTreeItem*)node->Data();
-    wxGenericTreeItem *res = item->FindItem( itemId );
-    if (res) return (wxGenericTreeItem*)(res);
-    node = node->Next();
-  };
-  return NULL;
-};
+    // operations
+        // deletes all children notifying the treectrl about it if !NULL
+        // pointer given
+    void DeleteChildren(wxTreeCtrl *tree = NULL);
+        // FIXME don't know what is it for
+    void Reset();
 
-void wxGenericTreeItem::AddChild( wxGenericTreeItem *child )
-{
-  m_children.Append( child );
-};
+    // get count of all children (and grand children if 'recursively')
+    size_t GetChildrenCount(bool recursively = TRUE) const;
 
-void wxGenericTreeItem::SetCross( int x, int y )
-{
-  m_xCross = x;
-  m_yCross = y;
-};
+    void Insert(wxGenericTreeItem *child, size_t index)
+    { m_children.Insert(child, index); }
 
-void wxGenericTreeItem::GetSize( int &x, int &y )
-{
-  if (y < m_y + 10) y = m_y +10;
-  int width = m_x +  m_width;
-  if (width > x) x = width;
-  wxNode *node = m_children.First();
-  while (node)
-  {
-    wxGenericTreeItem *item = (wxGenericTreeItem*)node->Data();
-    item->GetSize( x, y );
-    node = node->Next();
-  };
-};
+    void SetCross( int x, int y );
+    void GetSize( int &x, int &y, const wxTreeCtrl* );
 
-long wxGenericTreeItem::HitTest( const wxPoint& point, int &flags )
-{
-  if ((point.y > m_y) && (point.y < m_y+m_height))
-  {
-    if ((point.x > m_xCross-5) &&
-        (point.x < m_xCross+5) &&
-        (point.y > m_yCross-5) &&
-        (point.y < m_yCross+5) &&
-        (m_hasChildren))
-    {
-      flags = wxTREE_HITTEST_ONITEMBUTTON;
-      return m_itemId;
-    };
-    if ((point.x > m_x) && (point.x < m_x+m_width))
-    {
-      flags = wxTREE_HITTEST_ONITEMLABEL;
-      return m_itemId;
-    };
-    if (point.x > m_x)
-    {
-      flags = wxTREE_HITTEST_ONITEMRIGHT;
-      return m_itemId;
-    };
-    flags = wxTREE_HITTEST_ONITEMINDENT;
-    return m_itemId;
-  }
-  else
-  {
-    if (!m_isCollapsed)
+        // return the item at given position (or NULL if no item), onButton is
+        // TRUE if the point belongs to the item's button, otherwise it lies
+        // on the button's label
+    wxGenericTreeItem *HitTest( const wxPoint& point, const wxTreeCtrl *, int &flags);
+
+    void Expand() { m_isCollapsed = FALSE; }
+    void Collapse() { m_isCollapsed = TRUE; }
+
+    void SetHilight( bool set = TRUE ) { m_hasHilight = set; }
+
+    // status inquiries
+    bool HasChildren() const { return !m_children.IsEmpty(); }
+    bool IsSelected()  const { return m_hasHilight; }
+    bool IsExpanded()  const { return !m_isCollapsed; }
+    bool HasPlus()     const { return m_hasPlus || HasChildren(); }
+    bool IsBold()      const { return m_isBold; }
+
+    // attributes
+        // get them - may be NULL
+    wxTreeItemAttr *GetAttributes() const { return m_attr; }
+        // get them ensuring that the pointer is not NULL
+    wxTreeItemAttr& Attr()
     {
-      wxNode *node = m_children.First();
-      while (node)
-      {
-        wxGenericTreeItem *child = (wxGenericTreeItem*)node->Data();
-        long res = child->HitTest( point, flags );
-        if (res != -1) return res;
-        node = node->Next();
-      };
-    };
-  };
-  return -1;
-};
+        if ( !m_attr )
+            m_attr = new wxTreeItemAttr;
 
-void wxGenericTreeItem::PrepareEvent( wxTreeEvent &event )
-{
-  event.m_item.m_itemId = m_itemId;
-  event.m_item.m_state = m_state;
-  event.m_item.m_text = m_text;
-  event.m_item.m_image = m_image;
-  event.m_item.m_selectedImage = m_selectedImage;
-  event.m_item.m_children = (int)m_hasChildren;
-  event.m_item.m_data = m_data;
-  event.m_oldItem = 0;
-  event.m_code = 0;
-  event.m_pointDrag.x = 0;
-  event.m_pointDrag.y = 0;
-};
+        return *m_attr;
+    }
 
-void wxGenericTreeItem::SendKeyDown( wxWindow *target )
-{
-  wxTreeEvent event( wxEVT_COMMAND_TREE_KEY_DOWN, target->GetId() );
-  PrepareEvent( event );
-  event.SetEventObject( target );
-  target->ProcessEvent( event );
-};
+private:
+    wxString            m_text;
 
-void wxGenericTreeItem::SendSelected( wxWindow *target )
-{
-  wxTreeEvent event( wxEVT_COMMAND_TREE_SEL_CHANGED, target->GetId() );
-  PrepareEvent( event );
-  event.SetEventObject( target );
-  target->ProcessEvent( event );
-};
+    // tree ctrl images for the normal, selected, expanded and
+    // expanded+selected states
+    int                 m_images[wxTreeItemIcon_Max];
 
-void wxGenericTreeItem::SendDelete( wxWindow *target )
-{
-  wxTreeEvent event( wxEVT_COMMAND_TREE_DELETE_ITEM, target->GetId() );
-  PrepareEvent( event );
-  event.SetEventObject( target );
-  target->ProcessEvent( event );
-};
+    wxTreeItemData     *m_data;
 
-void wxGenericTreeItem::SendExpand( wxWindow *target )
-{
-  m_isCollapsed = FALSE;
+    // use bitfields to save size
+    int                 m_isCollapsed :1;
+    int                 m_hasHilight  :1; // same as focused
+    int                 m_hasPlus     :1; // used for item which doesn't have
+                                          // children but has a [+] button
+    int                 m_isBold      :1; // render the label in bold font
 
-  wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_EXPANDING, target->GetId() );
-  event.SetEventObject( target );
-  PrepareEvent( event );
-  target->ProcessEvent( event );
+    wxCoord             m_x, m_y;
+    wxCoord             m_height, m_width;
+    int                 m_xCross, m_yCross;
+    int                 m_level;
 
-  event.SetEventType(wxEVT_COMMAND_TREE_ITEM_EXPANDED);
-  PrepareEvent( event );
-  target->ProcessEvent( event );
+    wxArrayGenericTreeItems m_children;
+    wxGenericTreeItem  *m_parent;
+
+    wxTreeItemAttr     *m_attr;
 };
 
-void wxGenericTreeItem::SendCollapse( wxWindow *target )
-{
-  m_isCollapsed = TRUE;
+// =============================================================================
+// implementation
+// =============================================================================
 
-  wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_COLLAPSING, target->GetId() );
-  event.SetEventObject( target );
-  PrepareEvent( event );
-  target->ProcessEvent( event );
 
-  event.SetEventType(wxEVT_COMMAND_TREE_ITEM_COLLAPSED);
-  PrepareEvent( event );
-  target->ProcessEvent( event );
-};
+// -----------------------------------------------------------------------------
+// wxTreeRenameTimer (internal)
+// -----------------------------------------------------------------------------
 
-void wxGenericTreeItem::SetHilight( bool set )
+wxTreeRenameTimer::wxTreeRenameTimer( wxTreeCtrl *owner )
 {
-  m_hasHilight = set;
-};
+    m_owner = owner;
+}
 
-bool wxGenericTreeItem::HasHilight()
+void wxTreeRenameTimer::Notify()
 {
-  return m_hasHilight;
-};
+    m_owner->OnRenameTimer();
+}
 
 //-----------------------------------------------------------------------------
-// wxTreeCtrl
+// wxTreeTextCtrl (internal)
 //-----------------------------------------------------------------------------
 
-IMPLEMENT_DYNAMIC_CLASS(wxTreeCtrl,wxScrolledWindow)
+IMPLEMENT_DYNAMIC_CLASS(wxTreeTextCtrl,wxTextCtrl);
 
-BEGIN_EVENT_TABLE(wxTreeCtrl,wxScrolledWindow)
-  EVT_PAINT          (wxTreeCtrl::OnPaint)
-  EVT_MOUSE_EVENTS   (wxTreeCtrl::OnMouse)
-  EVT_CHAR           (wxTreeCtrl::OnChar)
-  EVT_SET_FOCUS      (wxTreeCtrl::OnSetFocus)
-  EVT_KILL_FOCUS     (wxTreeCtrl::OnKillFocus)
+BEGIN_EVENT_TABLE(wxTreeTextCtrl,wxTextCtrl)
+    EVT_CHAR           (wxTreeTextCtrl::OnChar)
+    EVT_KILL_FOCUS     (wxTreeTextCtrl::OnKillFocus)
 END_EVENT_TABLE()
 
-wxTreeCtrl::wxTreeCtrl()
-{
-  m_current = NULL;
-  m_anchor = NULL;
-  m_hasFocus = FALSE;
-  m_xScroll = 0;
-  m_yScroll = 0;
-  m_lastId = 0;
-  m_lineHeight = 10;
-  m_indent = 15;
-  m_isCreated = FALSE;
-  m_dc = NULL;
-  m_hilightBrush = new wxBrush( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_HIGHLIGHT), wxSOLID );
-  m_imageList = NULL;
-  m_smallImageList = NULL;
-};
-
-wxTreeCtrl::wxTreeCtrl(wxWindow *parent, wxWindowID id,
-            const wxPoint& pos, const wxSize& size,
-            long style, const wxString& name )
-{
-  m_current = NULL;
-  m_anchor = NULL;
-  m_hasFocus = FALSE;
-  m_xScroll = 0;
-  m_yScroll = 0;
-  m_lastId = 0;
-  m_lineHeight = 10;
-  m_indent = 15;
-  m_isCreated = FALSE;
-  m_dc = NULL;
-  m_hilightBrush = new wxBrush( wxSystemSettings::GetSystemColour(wxSYS_COLOUR_HIGHLIGHT), wxSOLID );
-  m_imageList = NULL;
-  m_smallImageList = NULL;
-  Create( parent, id, pos, size, style, name );
-};
+wxTreeTextCtrl::wxTreeTextCtrl( wxWindow *parent,
+                                const wxWindowID id,
+                                bool *accept,
+                                wxString *res,
+                                wxTreeCtrl *owner,
+                                const wxString &value,
+                                const wxPoint &pos,
+                                const wxSize &size,
+                                int style,
+                                const wxValidator& validator,
+                                const wxString &name )
+              : wxTextCtrl( parent, id, value, pos, size, style, validator, name )
+{
+    m_res = res;
+    m_accept = accept;
+    m_owner = owner;
+    (*m_accept) = FALSE;
+    (*m_res) = "";
+    m_startValue = value;
+}
 
-wxTreeCtrl::~wxTreeCtrl()
+void wxTreeTextCtrl::OnChar( wxKeyEvent &event )
 {
-  if (m_dc) delete m_dc;
-};
+    if (event.m_keyCode == WXK_RETURN)
+    {
+        (*m_accept) = TRUE;
+        (*m_res) = GetValue();
+        m_owner->SetFocus();
+        return;
+    }
+    if (event.m_keyCode == WXK_ESCAPE)
+    {
+        (*m_accept) = FALSE;
+        (*m_res) = "";
+        m_owner->SetFocus();
+        return;
+    }
+    event.Skip();
+}
 
-bool wxTreeCtrl::Create(wxWindow *parent, wxWindowID id,
-            const wxPoint& pos, const wxSize& size,
-            long style, const wxString& name )
+void wxTreeTextCtrl::OnKillFocus( wxFocusEvent &WXUNUSED(event) )
 {
-  wxScrolledWindow::Create( parent, id, pos, size, style, name );
-  SetBackgroundColour( *wxWHITE );
-  m_dottedPen = wxPen( *wxBLACK, 0, 0 );
-  return TRUE;
-};
+    if (wxPendingDelete.Member(this)) return;
 
-int wxTreeCtrl::GetCount() const
-{
-  if (!m_anchor) return 0;
-  return m_anchor->NumberOfVisibleDescendents();
-};
+    wxPendingDelete.Append(this);
+
+    if ((*m_accept) && ((*m_res) != m_startValue))
+        m_owner->OnRenameAccept();
+}
+
+#define PIXELS_PER_UNIT 10
+// -----------------------------------------------------------------------------
+// wxTreeEvent
+// -----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxTreeEvent, wxNotifyEvent)
 
-long wxTreeCtrl::InsertItem( long parent, const wxString& label, int image,
-      int selImage, long WXUNUSED(insertAfter) )
+wxTreeEvent::wxTreeEvent( wxEventType commandType, int id )
+           : wxNotifyEvent( commandType, id )
 {
-  wxGenericTreeItem *p = NULL;
-  if (parent == 0)
-  {
-    if (m_anchor) return -1;
-  }
-  else
-  {
-    p = FindItem( parent );
-    if (!p) return -1;
-  };
-  wxTreeItem item;
-  m_lastId++;
-  item.m_mask = wxTREE_MASK_HANDLE;
-  item.m_itemId = m_lastId;
-  if (!label.IsNull() || (label == ""))
-  {
-    item.m_text = label;
-    item.m_mask |= wxTREE_MASK_TEXT;
-  };
-  if (image >= 0)
-  {
-    item.m_image = image;
-    item.m_mask |= wxTREE_MASK_IMAGE;
-  };
-  if (selImage >= 0)
-  {
-    item.m_selectedImage = selImage;
-    item.m_mask |= wxTREE_MASK_SELECTED_IMAGE;
-  };
-
-  wxClientDC dc(this);
-  wxGenericTreeItem *new_child = new wxGenericTreeItem( p, item, &dc );
-  if (p)
-    p->AddChild( new_child );
-  else
-    m_anchor = new_child;
+    m_code = 0;
+    m_itemOld = (wxGenericTreeItem *)NULL;
+}
 
-  if (p)
-  {
-    CalculatePositions();
+// -----------------------------------------------------------------------------
+// wxGenericTreeItem
+// -----------------------------------------------------------------------------
+
+wxGenericTreeItem::wxGenericTreeItem(wxGenericTreeItem *parent,
+                                     const wxString& text,
+                                     wxDC& WXUNUSED(dc),
+                                     int image, int selImage,
+                                     wxTreeItemData *data)
+                 : m_text(text)
+{
+    m_images[wxTreeItemIcon_Normal] = image;
+    m_images[wxTreeItemIcon_Selected] = selImage;
+    m_images[wxTreeItemIcon_Expanded] = NO_IMAGE;
+    m_images[wxTreeItemIcon_SelectedExpanded] = NO_IMAGE;
+
+    m_data = data;
+    m_x = m_y = 0;
+    m_xCross = m_yCross = 0;
+
+    m_level = 0;
+
+    m_isCollapsed = TRUE;
+    m_hasHilight = FALSE;
+    m_hasPlus = FALSE;
+    m_isBold = FALSE;
+
+    m_parent = parent;
+
+    m_attr = (wxTreeItemAttr *)NULL;
+  
+    // We don't know the height here yet.
+    m_width = 0;
+    m_height = 0;
+}
 
-    if (!p->HasChildren()) p->m_hasChildren = TRUE;
+wxGenericTreeItem::~wxGenericTreeItem()
+{
+    delete m_data;
 
-    int ch = 0;
-    GetClientSize( NULL, &ch );
+    delete m_attr;
 
-    wxRectangle rect;
-    rect.x = 0; rect.y = 0;
-    rect.width = 10000; rect.height = ch;
+    wxASSERT_MSG( m_children.IsEmpty(),
+                  wxT("please call DeleteChildren() before deleting the item") );
+}
 
-    PrepareDC( dc );
-    if (p->m_children.Number() == 1)
+void wxGenericTreeItem::DeleteChildren(wxTreeCtrl *tree)
+{
+    size_t count = m_children.Count();
+    for ( size_t n = 0; n < count; n++ )
     {
-      rect.y = dc.LogicalToDeviceY( p->m_y );
+        wxGenericTreeItem *child = m_children[n];
+        if (tree)
+            tree->SendDeleteEvent(child);
+
+        child->DeleteChildren(tree);
+        delete child;
     }
-    else
-    {
-      wxNode *node = p->m_children.Member( new_child )->Previous();
-      wxGenericTreeItem* last_child = (wxGenericTreeItem*)node->Data();
-      rect.y = dc.LogicalToDeviceY( last_child->m_y );
-    };
 
-    long doX = 0;
-    long doY = 0;
-    dc.GetDeviceOrigin( &doX, &doY );
-    rect.height = ch-rect.y-doY;
+    m_children.Empty();
+}
 
-    AdjustMyScrollbars();
+void wxGenericTreeItem::SetText( const wxString &text )
+{
+    m_text = text;
+}
 
-    if (rect.height > 0) Refresh( FALSE, &rect);
-  }
-  else
-  {
-    AdjustMyScrollbars();
+void wxGenericTreeItem::Reset()
+{
+    m_text.Empty();
+    for ( int i = 0; i < wxTreeItemIcon_Max; i++ )
+    {
+        m_images[i] = NO_IMAGE;
+    }
 
-    Refresh();
-  };
+    m_data = NULL;
+    m_x = m_y =
+    m_height = m_width = 0;
+    m_xCross =
+    m_yCross = 0;
 
-  return m_lastId;
-};
+    m_level = 0;
 
-long wxTreeCtrl::InsertItem( long parent, wxTreeItem &info, long WXUNUSED(insertAfter) )
-{
-  int oldMask = info.m_mask;
-  wxGenericTreeItem *p = NULL;
-  if (parent == 0)
-  {
-    if (m_anchor) return -1;
-  }
-  else
-  {
-    p = FindItem( parent );
-    if (!p)
-    {
-      printf( "TreeItem not found.\n" );
-      return -1;
-    };
-  };
-  long ret = 0;
-  if ((info.m_mask & wxTREE_MASK_HANDLE) == 0)
-  {
-    m_lastId++;
-    info.m_itemId = m_lastId;
-    info.m_mask |= wxTREE_MASK_HANDLE;
-    ret = m_lastId;
-  }
-  else
-  {
-    ret = info.m_itemId;
-  };
+    DeleteChildren();
+    m_isCollapsed = TRUE;
 
-  wxClientDC dc(this);
-  wxGenericTreeItem *new_child = new wxGenericTreeItem( p, info, &dc );
-  if (p)
-    p->AddChild( new_child );
-  else
-    m_anchor = new_child;
+    m_parent = (wxGenericTreeItem *)NULL;
+}
 
-  if (p)
-  {
-    CalculatePositions();
+size_t wxGenericTreeItem::GetChildrenCount(bool recursively) const
+{
+    size_t count = m_children.Count();
+    if ( !recursively )
+        return count;
 
-    if (!p->HasChildren()) p->m_hasChildren = TRUE;
+    size_t total = count;
+    for (size_t n = 0; n < count; ++n)
+    {
+        total += m_children[n]->GetChildrenCount();
+    }
 
-    int ch = 0;
-    GetClientSize( NULL, &ch );
+    return total;
+}
 
-    wxRectangle rect;
-    rect.x = 0; rect.y = 0;
-    rect.width = 10000; rect.height = ch;
+void wxGenericTreeItem::SetCross( int x, int y )
+{
+    m_xCross = x;
+    m_yCross = y;
+}
 
-    PrepareDC( dc );
-    if (p->m_children.Number() == 1)
+void wxGenericTreeItem::GetSize( int &x, int &y, const wxTreeCtrl *theTree )
+{
+    int bottomY=m_y+theTree->GetLineHeight(this);
+    if ( y < bottomY ) y = bottomY;
+    int width = m_x +  m_width;
+    if ( x < width ) x = width;
+
+    if (IsExpanded())
     {
-      rect.y = dc.LogicalToDeviceY( p->m_y );
+        size_t count = m_children.Count();
+        for ( size_t n = 0; n < count; ++n )
+        {
+            m_children[n]->GetSize( x, y, theTree );
+        }
     }
-    else
+}
+
+wxGenericTreeItem *wxGenericTreeItem::HitTest( const wxPoint& point,
+                                               const wxTreeCtrl *theTree,
+                                               int &flags)
+{
+    if ((point.y > m_y) && (point.y < m_y + theTree->GetLineHeight(this)))
     {
-      wxNode *node = p->m_children.Member( new_child )->Previous();
-      wxGenericTreeItem* last_child = (wxGenericTreeItem*)node->Data();
-      rect.y = dc.LogicalToDeviceY( last_child->m_y );
-    };
+        if (point.y<m_y+theTree->GetLineHeight(this)/2)
+            flags |= wxTREE_HITTEST_ONITEMUPPERPART;
+        else
+            flags |= wxTREE_HITTEST_ONITEMLOWERPART;
 
-    long doX = 0;
-    long doY = 0;
-    dc.GetDeviceOrigin( &doX, &doY );
-    rect.height = ch-rect.y-doY;
+        // 5 is the size of the plus sign
+        if ((point.x > m_xCross-5) && (point.x < m_xCross+5) &&
+            (point.y > m_yCross-5) && (point.y < m_yCross+5) &&
+            (IsExpanded() || HasPlus()))
+        {
+            flags|=wxTREE_HITTEST_ONITEMBUTTON;
+            return this;
+        }
 
-    AdjustMyScrollbars();
+        if ((point.x >= m_x) && (point.x <= m_x+m_width))
+        {
+            int image_w = -1;
+            int image_h;
 
-    if (rect.height > 0) Refresh( FALSE, &rect);
-  }
-  else
-  {
-    AdjustMyScrollbars();
+            // assuming every image (normal and selected ) has the same size !
+            if ( (GetImage() != NO_IMAGE) && theTree->m_imageListNormal )
+                theTree->m_imageListNormal->GetSize(GetImage(), image_w, image_h);
 
-    Refresh();
-  };
+            if ((image_w != -1) && (point.x <= m_x + image_w + 1))
+                flags |= wxTREE_HITTEST_ONITEMICON;
+            else
+                flags |= wxTREE_HITTEST_ONITEMLABEL;
 
-  info.m_mask = oldMask;
-  return ret;
-};
+            return this;
+        }
 
-bool wxTreeCtrl::ExpandItem( long item, int action )
-{
-  wxGenericTreeItem *i = FindItem( item );
-  if (!i)
-    return FALSE;
+        if (point.x < m_x)
+            flags |= wxTREE_HITTEST_ONITEMINDENT;
+        if (point.x > m_x+m_width)
+            flags |= wxTREE_HITTEST_ONITEMRIGHT;
 
-  switch (action)
-  {
-    case wxTREE_EXPAND_EXPAND:
+        return this;
+    }
+    else
     {
-      i->SendExpand( this );
-      break;
+        if (!m_isCollapsed)
+        {
+            size_t count = m_children.Count();
+            for ( size_t n = 0; n < count; n++ )
+            {
+                wxGenericTreeItem *res = m_children[n]->HitTest( point, theTree, flags );
+                if ( res != NULL )
+                    return res;
+            }
+        }
     }
 
-    case wxTREE_EXPAND_COLLAPSE_RESET:
-    case wxTREE_EXPAND_COLLAPSE:
+    flags|=wxTREE_HITTEST_NOWHERE;
+    
+    return (wxGenericTreeItem*) NULL;
+}
+
+int wxGenericTreeItem::GetCurrentImage() const
+{
+    int image = NO_IMAGE;
+    if ( IsExpanded() )
+    {
+        if ( IsSelected() )
+        {
+            image = GetImage(wxTreeItemIcon_SelectedExpanded);
+        }
+
+        if ( image == NO_IMAGE )
+        {
+            // we usually fall back to the normal item, but try just the
+            // expanded one (and not selected) first in this case
+            image = GetImage(wxTreeItemIcon_Expanded);
+        }
+    }
+    else // not expanded
     {
-      wxNode *node = i->m_children.First();
-      while (node)
-      {
-        wxGenericTreeItem *child = (wxGenericTreeItem*)node->Data();
-        if ( child->IsExpanded() )
-          ExpandItem( child->m_itemId, wxTREE_EXPAND_COLLAPSE );
-        node = node->Next();
-      };
-
-      CalculatePositions();
-
-      i->SendCollapse( this );
-      break;
+        if ( IsSelected() )
+            image = GetImage(wxTreeItemIcon_Selected);
     }
 
-    case wxTREE_EXPAND_TOGGLE:
+    // may be it doesn't have the specific image we want, try the default one
+    // instead
+    if ( image == NO_IMAGE )
     {
-      if ( i->IsExpanded() )
-        ExpandItem( item, wxTREE_EXPAND_COLLAPSE );
-      else
-        ExpandItem( item, wxTREE_EXPAND_EXPAND );
-      return TRUE;
+        image = GetImage();
     }
-  };
-
-  int cw = 0;
-  int ch = 0;
-  GetClientSize( &cw, &ch );
-  wxRect rect;
-  rect.x = 0;
-  rect.width = cw;
-  wxClientDC dc(this);
-  PrepareDC(dc);
-  rect.y = dc.LogicalToDeviceY( i->m_y );
-
-  long doY = 0;
-  dc.GetDeviceOrigin( NULL, &doY );
-  rect.height = ch-rect.y-doY;
-  Refresh( TRUE, &rect );
-
-  AdjustMyScrollbars();
-
-  return TRUE;
-};
 
-void wxTreeCtrl::DeleteItem( long item )
+    return image;
+}
+
+// -----------------------------------------------------------------------------
+// wxTreeCtrl implementation
+// -----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxTreeCtrl, wxScrolledWindow)
+
+BEGIN_EVENT_TABLE(wxTreeCtrl,wxScrolledWindow)
+    EVT_PAINT          (wxTreeCtrl::OnPaint)
+    EVT_MOUSE_EVENTS   (wxTreeCtrl::OnMouse)
+    EVT_CHAR           (wxTreeCtrl::OnChar)
+    EVT_SET_FOCUS      (wxTreeCtrl::OnSetFocus)
+    EVT_KILL_FOCUS     (wxTreeCtrl::OnKillFocus)
+    EVT_IDLE           (wxTreeCtrl::OnIdle)
+END_EVENT_TABLE()
+
+// -----------------------------------------------------------------------------
+// construction/destruction
+// -----------------------------------------------------------------------------
+
+void wxTreeCtrl::Init()
 {
-  wxGenericTreeItem *pItem = FindItem( item );
-  wxCHECK_RET( pItem != NULL, "wxTreeCtrl::DeleteItem: no such pItem." );
+    m_current =
+    m_key_current =
+    m_anchor = (wxGenericTreeItem *) NULL;
+    m_hasFocus = FALSE;
+    m_dirty = FALSE;
+
+    m_xScroll = 0;
+    m_yScroll = 0;
+    m_lineHeight = 10;
+    m_indent = 15;
+    m_spacing = 18;
+
+    m_hilightBrush = new wxBrush
+    (
+      wxSystemSettings::GetSystemColour(wxSYS_COLOUR_HIGHLIGHT),
+      wxSOLID
+    );
+
+    m_imageListNormal =
+    m_imageListState = (wxImageList *) NULL;
 
-  pItem->m_parent->m_children.DeleteObject(pItem);
+    m_dragCount = 0;
 
-  Refresh();
+    m_renameTimer = new wxTreeRenameTimer( this );
+
+    m_normalFont = wxSystemSettings::GetSystemFont( wxSYS_DEFAULT_GUI_FONT );
+    m_boldFont = wxFont( m_normalFont.GetPointSize(),
+                            m_normalFont.GetFamily(),
+                            m_normalFont.GetStyle(),
+                            wxBOLD,
+                            m_normalFont.GetUnderlined());
 }
 
-void wxTreeCtrl::DeleteChildren( long item )
+bool wxTreeCtrl::Create(wxWindow *parent, wxWindowID id,
+                        const wxPoint& pos, const wxSize& size,
+                        long style,
+                        const wxValidator &validator,
+                        const wxString& name )
 {
-  wxGenericTreeItem *pItem = FindItem( item );
-  wxCHECK_RET( pItem != NULL, "wxTreeCtrl::DeleteChildren: no such pItem." );
+    Init();
+
+    wxScrolledWindow::Create( parent, id, pos, size, style|wxHSCROLL|wxVSCROLL, name );
+
+#if wxUSE_VALIDATORS
+    SetValidator( validator );
+#endif
 
-  pItem->m_children.Clear();
+    SetBackgroundColour( *wxWHITE );
+//  m_dottedPen = wxPen( "grey", 0, wxDOT );  too slow under XFree86
+    m_dottedPen = wxPen( "grey", 0, 0 );
 
-  Refresh();
+    return TRUE;
 }
 
-bool wxTreeCtrl::DeleteAllItems()
+wxTreeCtrl::~wxTreeCtrl()
 {
-  delete m_anchor;
-  m_anchor = NULL;
-  Refresh();
-  return TRUE;
-};
+    wxDELETE( m_hilightBrush );
 
-bool wxTreeCtrl::GetItem( wxTreeItem &info ) const
-{
-  wxGenericTreeItem *i = FindItem( info.m_itemId );
-  if (!i) return FALSE;
-  i->GetItem( info );
-  return TRUE;
-};
+    DeleteAllItems();
 
-long wxTreeCtrl::GetItemData( long item ) const
-{
-  wxGenericTreeItem *i = FindItem( item );
-  if (!i) return 0;
-  return i->m_data;
-};
+    delete m_renameTimer;
+}
 
-wxString wxTreeCtrl::GetItemText( long item ) const
-{
-  wxGenericTreeItem *i = FindItem( item );
-  if (!i) return "";
-  return i->m_text;
-};
+// -----------------------------------------------------------------------------
+// accessors
+// -----------------------------------------------------------------------------
 
-int wxTreeCtrl::GetItemImage(long item) const
+size_t wxTreeCtrl::GetCount() const
 {
-  wxGenericTreeItem *i = FindItem( item );
-  return i == 0 ? -1 : i->GetImage();
+    return m_anchor == NULL ? 0u : m_anchor->GetChildrenCount();
 }
 
-long wxTreeCtrl::GetParent( long item ) const
+void wxTreeCtrl::SetIndent(unsigned int indent)
 {
-  wxGenericTreeItem *i = FindItem( item );
-  if (!i) return -1;
-  i = i->m_parent;
-  if (!i) return -1;
-  return i->m_parent->m_itemId;
-};
+    m_indent = indent;
+    m_dirty = TRUE;
+}
 
-long wxTreeCtrl::GetRootItem() const
+void wxTreeCtrl::SetSpacing(unsigned int spacing)
 {
-  if (m_anchor) return m_anchor->m_itemId;
-  return -1;
-};
+    m_spacing = spacing;
+    m_dirty = TRUE;
+}
 
-long wxTreeCtrl::GetSelection() const
+size_t wxTreeCtrl::GetChildrenCount(const wxTreeItemId& item, bool recursively)
 {
-  return m_current ? m_current->GetItemId() : -1;
-};
+    wxCHECK_MSG( item.IsOk(), 0u, wxT("invalid tree item") );
 
-bool wxTreeCtrl::SelectItem(long itemId)
-{
-  wxGenericTreeItem *pItem = FindItem(itemId);
-  if ( !pItem ) {
-    wxLogDebug("Can't select an item %d which doesn't exist.", itemId);
+    return item.m_pItem->GetChildrenCount(recursively);
+}
 
-    return FALSE;
-  }
+// -----------------------------------------------------------------------------
+// functions to work with tree items
+// -----------------------------------------------------------------------------
 
-  SelectItem(pItem);
+wxString wxTreeCtrl::GetItemText(const wxTreeItemId& item) const
+{
+    wxCHECK_MSG( item.IsOk(), wxT(""), wxT("invalid tree item") );
 
-  return TRUE;
-};
+    return item.m_pItem->GetText();
+}
 
-void wxTreeCtrl::SelectItem(wxGenericTreeItem *item, bool bDoEvents )
+int wxTreeCtrl::GetItemImage(const wxTreeItemId& item,
+                             wxTreeItemIcon which) const
 {
-  if (m_current != item)
-  {
-    if (m_current)
-    {
-      m_current->SetHilight( FALSE );
-      RefreshLine( m_current );
-    };
-    m_current = item;
-    m_current->SetHilight( TRUE );
-    RefreshLine( m_current );
-
-    if (bDoEvents) m_current->SendSelected( this );
-  }
+    wxCHECK_MSG( item.IsOk(), -1, wxT("invalid tree item") );
+
+    return item.m_pItem->GetImage(which);
 }
 
-bool wxTreeCtrl::ItemHasChildren( long item ) const
+wxTreeItemData *wxTreeCtrl::GetItemData(const wxTreeItemId& item) const
 {
-  wxGenericTreeItem *i = FindItem( item );
-  if (!i) return FALSE;
-  return i->m_hasChildren;
-};
+    wxCHECK_MSG( item.IsOk(), NULL, wxT("invalid tree item") );
 
-void wxTreeCtrl::SetIndent( int indent )
-{
-  m_indent = indent;
-  Refresh();
-};
+    return item.m_pItem->GetData();
+}
 
-int wxTreeCtrl::GetIndent() const
+void wxTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text)
 {
-  return m_indent;
-};
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 
-bool wxTreeCtrl::SetItem( wxTreeItem &info )
-{
-  wxGenericTreeItem *i = FindItem( info.m_itemId );
-  if (!i) return FALSE;
-  wxClientDC dc(this);
-  i->SetItem( info, &dc );
-  Refresh();
-  return TRUE;
-};
+    wxClientDC dc(this);
+    wxGenericTreeItem *pItem = item.m_pItem;
+    pItem->SetText(text);
+    CalculateSize(pItem, dc);
+    RefreshLine(pItem);
+}
 
-bool wxTreeCtrl::SetItemData( long item, long data )
+void wxTreeCtrl::SetItemImage(const wxTreeItemId& item,
+                              int image,
+                              wxTreeItemIcon which)
 {
-  wxGenericTreeItem *i = FindItem( item );
-  if (!i) return FALSE;
-  i->m_data = data;
-  return TRUE;
-};
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 
-bool wxTreeCtrl::SetItemText( long item, const wxString &text )
-{
-  wxGenericTreeItem *i = FindItem( item );
-  if (!i) return FALSE;
-  wxClientDC dc(this);
-  i->SetText( text, &dc );
-  return TRUE;
-};
+    wxGenericTreeItem *pItem = item.m_pItem;
+    pItem->SetImage(image, which);
 
-void wxTreeCtrl::SetItemImage(long item, int image, int imageSel) const
-{
-  wxGenericTreeItem *i = FindItem( item );
-  if ( i != 0 ) {
-    i->SetImage(image);
-    i->SetSelectedImage(imageSel);
-  }
+    wxClientDC dc(this);
+    CalculateSize(pItem, dc);
+    RefreshLine(pItem);
 }
 
-long wxTreeCtrl::HitTest( const wxPoint& point, int &flags )
+void wxTreeCtrl::SetItemData(const wxTreeItemId& item, wxTreeItemData *data)
 {
-  flags = 0;
-  if (!m_anchor) return -1;
-  return m_anchor->HitTest( point, flags );
-};
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 
-wxImageList *wxTreeCtrl::GetImageList( int which ) const
-{
-  if (which == wxIMAGE_LIST_NORMAL) return m_imageList;
-  return m_smallImageList;
-};
+    item.m_pItem->SetData(data);
+}
 
-void wxTreeCtrl::SetImageList( wxImageList *imageList, int which )
+void wxTreeCtrl::SetItemHasChildren(const wxTreeItemId& item, bool has)
 {
-  if (which == wxIMAGE_LIST_NORMAL)
-  {
-    if (m_imageList) delete m_imageList;
-    m_imageList = imageList;
-  }
-  else
-  {
-    if (m_smallImageList) delete m_smallImageList;
-    m_smallImageList = imageList;
-  };
-};
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
+
+    wxGenericTreeItem *pItem = item.m_pItem;
+    pItem->SetHasPlus(has);
+    RefreshLine(pItem);
+}
+
+void wxTreeCtrl::SetItemBold(const wxTreeItemId& item, bool bold)
+{
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
+
+    // avoid redrawing the tree if no real change
+    wxGenericTreeItem *pItem = item.m_pItem;
+    if ( pItem->IsBold() != bold )
+    {
+        pItem->SetBold(bold);
+        RefreshLine(pItem);
+    }
+}
+
+void wxTreeCtrl::SetItemTextColour(const wxTreeItemId& item,
+                                   const wxColour& col)
+{
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
+
+    wxGenericTreeItem *pItem = item.m_pItem;
+    pItem->Attr().SetTextColour(col);
+    RefreshLine(pItem);
+}
+
+void wxTreeCtrl::SetItemBackgroundColour(const wxTreeItemId& item,
+                                         const wxColour& col)
+{
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
+
+    wxGenericTreeItem *pItem = item.m_pItem;
+    pItem->Attr().SetBackgroundColour(col);
+    RefreshLine(pItem);
+}
+
+void wxTreeCtrl::SetItemFont(const wxTreeItemId& item, const wxFont& font)
+{
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
+
+    wxGenericTreeItem *pItem = item.m_pItem;
+    pItem->Attr().SetFont(font);
+    RefreshLine(pItem);
+}
+
+// -----------------------------------------------------------------------------
+// item status inquiries
+// -----------------------------------------------------------------------------
+
+bool wxTreeCtrl::IsVisible(const wxTreeItemId& WXUNUSED(item)) const
+{
+    wxFAIL_MSG(wxT("not implemented"));
+
+    return TRUE;
+}
+
+bool wxTreeCtrl::ItemHasChildren(const wxTreeItemId& item) const
+{
+    wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
+
+    return !item.m_pItem->GetChildren().IsEmpty();
+}
+
+bool wxTreeCtrl::IsExpanded(const wxTreeItemId& item) const
+{
+    wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
+
+    return item.m_pItem->IsExpanded();
+}
+
+bool wxTreeCtrl::IsSelected(const wxTreeItemId& item) const
+{
+    wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
+
+    return item.m_pItem->IsSelected();
+}
+
+bool wxTreeCtrl::IsBold(const wxTreeItemId& item) const
+{
+    wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
+
+    return item.m_pItem->IsBold();
+}
+
+// -----------------------------------------------------------------------------
+// navigation
+// -----------------------------------------------------------------------------
+
+wxTreeItemId wxTreeCtrl::GetParent(const wxTreeItemId& item) const
+{
+  wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
+
+  return item.m_pItem->GetParent();
+}
+
+wxTreeItemId wxTreeCtrl::GetFirstChild(const wxTreeItemId& item, long& cookie) const
+{
+  wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
+
+  cookie = 0;
+  return GetNextChild(item, cookie);
+}
+
+wxTreeItemId wxTreeCtrl::GetNextChild(const wxTreeItemId& item, long& cookie) const
+{
+  wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
+
+  wxArrayGenericTreeItems& children = item.m_pItem->GetChildren();
+  if ( (size_t)cookie < children.Count() )
+  {
+    return children.Item(cookie++);
+  }
+  else
+  {
+    // there are no more of them
+    return wxTreeItemId();
+  }
+}
+
+wxTreeItemId wxTreeCtrl::GetLastChild(const wxTreeItemId& item) const
+{
+  wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
+
+  wxArrayGenericTreeItems& children = item.m_pItem->GetChildren();
+  return (children.IsEmpty() ? wxTreeItemId() : wxTreeItemId(children.Last()));
+}
+
+wxTreeItemId wxTreeCtrl::GetNextSibling(const wxTreeItemId& item) const
+{
+  wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
+
+  wxGenericTreeItem *i = item.m_pItem;
+  wxGenericTreeItem *parent = i->GetParent();
+  if ( parent == NULL )
+  {
+    // root item doesn't have any siblings
+    return wxTreeItemId();
+  }
+
+  wxArrayGenericTreeItems& siblings = parent->GetChildren();
+  int index = siblings.Index(i);
+  wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
+
+  size_t n = (size_t)(index + 1);
+  return n == siblings.Count() ? wxTreeItemId() : wxTreeItemId(siblings[n]);
+}
+
+wxTreeItemId wxTreeCtrl::GetPrevSibling(const wxTreeItemId& item) const
+{
+  wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
+
+  wxGenericTreeItem *i = item.m_pItem;
+  wxGenericTreeItem *parent = i->GetParent();
+  if ( parent == NULL )
+  {
+    // root item doesn't have any siblings
+    return wxTreeItemId();
+  }
+
+  wxArrayGenericTreeItems& siblings = parent->GetChildren();
+  int index = siblings.Index(i);
+  wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
+
+  return index == 0 ? wxTreeItemId()
+                    : wxTreeItemId(siblings[(size_t)(index - 1)]);
+}
+
+wxTreeItemId wxTreeCtrl::GetFirstVisibleItem() const
+{
+  wxFAIL_MSG(wxT("not implemented"));
+
+  return wxTreeItemId();
+}
+
+wxTreeItemId wxTreeCtrl::GetNextVisible(const wxTreeItemId& item) const
+{
+  wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
+
+  wxFAIL_MSG(wxT("not implemented"));
+
+  return wxTreeItemId();
+}
+
+wxTreeItemId wxTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const
+{
+  wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
+
+  wxFAIL_MSG(wxT("not implemented"));
+
+  return wxTreeItemId();
+}
+
+// -----------------------------------------------------------------------------
+// operations
+// -----------------------------------------------------------------------------
+
+wxTreeItemId wxTreeCtrl::DoInsertItem(const wxTreeItemId& parentId,
+                                      size_t previous,
+                                      const wxString& text,
+                                      int image, int selImage,
+                                      wxTreeItemData *data)
+{
+    wxGenericTreeItem *parent = parentId.m_pItem;
+    if ( !parent )
+    {
+        // should we give a warning here?
+        return AddRoot(text, image, selImage, data);
+    }
+
+    wxClientDC dc(this);
+    wxGenericTreeItem *item =
+        new wxGenericTreeItem( parent, text, dc, image, selImage, data );
+
+    if ( data != NULL )
+    {
+        data->m_pItem = item;
+    }
+
+    parent->Insert( item, previous );
+
+    m_dirty = TRUE;
+
+    return item;
+}
+
+wxTreeItemId wxTreeCtrl::AddRoot(const wxString& text,
+                                 int image, int selImage,
+                                 wxTreeItemData *data)
+{
+    wxCHECK_MSG( !m_anchor, wxTreeItemId(), wxT("tree can have only one root") );
+
+    wxClientDC dc(this);
+    m_anchor = new wxGenericTreeItem((wxGenericTreeItem *)NULL, text, dc,
+                                   image, selImage, data);
+    if ( data != NULL )
+    {
+        data->m_pItem = m_anchor;
+    }
+
+    if (!HasFlag(wxTR_MULTIPLE))
+    {
+        m_current = m_key_current = m_anchor;
+           m_current->SetHilight( TRUE );
+    }
+
+    Refresh();
+    AdjustMyScrollbars();
+
+    return m_anchor;
+}
+
+wxTreeItemId wxTreeCtrl::PrependItem(const wxTreeItemId& parent,
+                                     const wxString& text,
+                                     int image, int selImage,
+                                     wxTreeItemData *data)
+{
+    return DoInsertItem(parent, 0u, text, image, selImage, data);
+}
+
+wxTreeItemId wxTreeCtrl::InsertItem(const wxTreeItemId& parentId,
+                                    const wxTreeItemId& idPrevious,
+                                    const wxString& text,
+                                    int image, int selImage,
+                                    wxTreeItemData *data)
+{
+    wxGenericTreeItem *parent = parentId.m_pItem;
+    if ( !parent )
+    {
+        // should we give a warning here?
+        return AddRoot(text, image, selImage, data);
+    }
+
+    int index = parent->GetChildren().Index(idPrevious.m_pItem);
+    wxASSERT_MSG( index != wxNOT_FOUND,
+                  wxT("previous item in wxTreeCtrl::InsertItem() is not a sibling") );
+                
+    return DoInsertItem(parentId, (size_t)++index, text, image, selImage, data);
+}
+
+wxTreeItemId wxTreeCtrl::InsertItem(const wxTreeItemId& parentId,
+                                    size_t before,
+                                    const wxString& text,
+                                    int image, int selImage,
+                                    wxTreeItemData *data)
+{
+    wxGenericTreeItem *parent = parentId.m_pItem;
+    if ( !parent )
+    {
+        // should we give a warning here?
+        return AddRoot(text, image, selImage, data);
+    }
+
+    return DoInsertItem(parentId, before, text, image, selImage, data);
+}
+
+wxTreeItemId wxTreeCtrl::AppendItem(const wxTreeItemId& parentId,
+                                    const wxString& text,
+                                    int image, int selImage,
+                                    wxTreeItemData *data)
+{
+    wxGenericTreeItem *parent = parentId.m_pItem;
+    if ( !parent )
+    {
+        // should we give a warning here?
+        return AddRoot(text, image, selImage, data);
+    }
+
+    return DoInsertItem( parent, parent->GetChildren().Count(), text,
+                         image, selImage, data);
+}
+
+void wxTreeCtrl::SendDeleteEvent(wxGenericTreeItem *item)
+{
+    wxTreeEvent event( wxEVT_COMMAND_TREE_DELETE_ITEM, GetId() );
+    event.m_item = item;
+    event.SetEventObject( this );
+    ProcessEvent( event );
+}
+
+void wxTreeCtrl::DeleteChildren(const wxTreeItemId& itemId)
+{
+    wxGenericTreeItem *item = itemId.m_pItem;
+    item->DeleteChildren(this);
+
+    m_dirty = TRUE;
+}
+
+void wxTreeCtrl::Delete(const wxTreeItemId& itemId)
+{
+    wxGenericTreeItem *item = itemId.m_pItem;
+    wxGenericTreeItem *parent = item->GetParent();
+
+    if ( parent )
+    {
+        parent->GetChildren().Remove( item );  // remove by value
+    }
+
+    item->DeleteChildren(this);
+    SendDeleteEvent(item);
+    delete item;
+
+    m_dirty = TRUE;
+}
+
+void wxTreeCtrl::DeleteAllItems()
+{
+    if ( m_anchor )
+    {
+        m_anchor->DeleteChildren(this);
+        delete m_anchor;
+
+        m_anchor = NULL;
+
+        m_dirty = TRUE;
+    }
+}
+
+void wxTreeCtrl::Expand(const wxTreeItemId& itemId)
+{
+    wxGenericTreeItem *item = itemId.m_pItem;
+
+    if ( !item->HasPlus() )
+        return;
+
+    if ( item->IsExpanded() )
+        return;
+
+    wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_EXPANDING, GetId() );
+    event.m_item = item;
+    event.SetEventObject( this );
+
+//  if ( ProcessEvent( event ) && event.m_code )  TODO: Was this a typo ?
+    if ( ProcessEvent( event ) && !event.IsAllowed() )
+    {
+        // cancelled by program
+        return;
+    }
+
+    item->Expand();
+    CalculatePositions();
+
+    RefreshSubtree(item);
+
+    event.SetEventType(wxEVT_COMMAND_TREE_ITEM_EXPANDED);
+    ProcessEvent( event );
+}
+
+void wxTreeCtrl::Collapse(const wxTreeItemId& itemId)
+{
+    wxGenericTreeItem *item = itemId.m_pItem;
+
+    if ( !item->IsExpanded() )
+        return;
+
+    wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_COLLAPSING, GetId() );
+    event.m_item = item;
+    event.SetEventObject( this );
+    if ( ProcessEvent( event ) && !event.IsAllowed() )
+    {
+        // cancelled by program
+        return;
+    }
+
+    item->Collapse();
+
+    wxArrayGenericTreeItems& children = item->GetChildren();
+    size_t count = children.Count();
+    for ( size_t n = 0; n < count; n++ )
+    {
+        Collapse(children[n]);
+    }
+
+    CalculatePositions();
+
+    RefreshSubtree(item);
+
+    event.SetEventType(wxEVT_COMMAND_TREE_ITEM_COLLAPSED);
+    ProcessEvent( event );
+}
+
+void wxTreeCtrl::CollapseAndReset(const wxTreeItemId& item)
+{
+    Collapse(item);
+    DeleteChildren(item);
+}
+
+void wxTreeCtrl::Toggle(const wxTreeItemId& itemId)
+{
+    wxGenericTreeItem *item = itemId.m_pItem;
+
+    if (item->IsExpanded())
+        Collapse(itemId);
+    else
+        Expand(itemId);
+}
+
+void wxTreeCtrl::Unselect()
+{
+    if (m_current)
+    {
+        m_current->SetHilight( FALSE );
+        RefreshLine( m_current );
+    }
+}
+
+void wxTreeCtrl::UnselectAllChildren(wxGenericTreeItem *item)
+{
+    if (item->IsSelected())
+    {
+        item->SetHilight(FALSE);
+        RefreshLine(item);
+    }
+
+    if (item->HasChildren())
+    {
+        wxArrayGenericTreeItems& children = item->GetChildren();
+        size_t count = children.Count();
+        for ( size_t n = 0; n < count; ++n )
+        {
+            UnselectAllChildren(children[n]);
+        }
+    }
+}
+
+void wxTreeCtrl::UnselectAll()
+{
+    UnselectAllChildren(GetRootItem().m_pItem);
+}
+
+// Recursive function !
+// To stop we must have crt_item<last_item
+// Algorithm :
+// Tag all next children, when no more children,
+// Move to parent (not to tag)
+// Keep going... if we found last_item, we stop.
+bool wxTreeCtrl::TagNextChildren(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select)
+{
+    wxGenericTreeItem *parent = crt_item->GetParent();
+
+    if (parent == NULL) // This is root item
+        return TagAllChildrenUntilLast(crt_item, last_item, select);
+
+    wxArrayGenericTreeItems& children = parent->GetChildren();
+    int index = children.Index(crt_item);
+    wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
+
+    size_t count = children.Count();
+    for (size_t n=(size_t)(index+1); n<count; ++n)
+    {
+        if (TagAllChildrenUntilLast(children[n], last_item, select)) return TRUE;
+    }
+
+    return TagNextChildren(parent, last_item, select);
+}
+
+bool wxTreeCtrl::TagAllChildrenUntilLast(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select)
+{
+    crt_item->SetHilight(select);
+    RefreshLine(crt_item);
+
+    if (crt_item==last_item) 
+        return TRUE;
+
+    if (crt_item->HasChildren())
+    {
+        wxArrayGenericTreeItems& children = crt_item->GetChildren();
+        size_t count = children.Count();
+        for ( size_t n = 0; n < count; ++n )
+        {
+            if (TagAllChildrenUntilLast(children[n], last_item, select)) 
+                return TRUE;
+           }
+    }
+
+  return FALSE;
+}
+
+void wxTreeCtrl::SelectItemRange(wxGenericTreeItem *item1, wxGenericTreeItem *item2)
+{
+    // item2 is not necessary after item1
+    wxGenericTreeItem *first=NULL, *last=NULL;
+
+    // choice first' and 'last' between item1 and item2
+    if (item1->GetY()<item2->GetY())
+    {   
+        first=item1;
+        last=item2;
+    }
+    else
+    {
+        first=item2;
+        last=item1;
+    }
+
+    bool select = m_current->IsSelected();
+
+    if ( TagAllChildrenUntilLast(first,last,select) )
+        return;
+
+    TagNextChildren(first,last,select);
+}
+
+void wxTreeCtrl::SelectItem(const wxTreeItemId& itemId,
+                            bool unselect_others,
+                            bool extended_select)
+{
+    wxCHECK_RET( itemId.IsOk(), wxT("invalid tree item") );
+
+    bool is_single=!(GetWindowStyleFlag() & wxTR_MULTIPLE);
+    wxGenericTreeItem *item = itemId.m_pItem;
+
+    //wxCHECK_RET( ( (!unselect_others) && is_single),
+    //           wxT("this is a single selection tree") );
+
+    // to keep going anyhow !!!
+    if (is_single)
+    {
+        if (item->IsSelected())
+            return; // nothing to do
+        unselect_others = TRUE;
+        extended_select = FALSE;
+    }
+    else if ( unselect_others && item->IsSelected() )
+    {
+        // selection change if there is more than one item currently selected
+        wxArrayTreeItemIds selected_items;
+        if ( GetSelections(selected_items) == 1 )
+            return;
+    }
+
+    wxTreeEvent event( wxEVT_COMMAND_TREE_SEL_CHANGING, GetId() );
+    event.m_item = item;
+    event.m_itemOld = m_current;
+    event.SetEventObject( this );
+    // TODO : Here we don't send any selection mode yet !
+
+    if ( GetEventHandler()->ProcessEvent( event ) && !event.IsAllowed() )
+      return;
+
+    // ctrl press
+    if (unselect_others)
+    {
+        if (is_single) Unselect(); // to speed up thing
+        else UnselectAll();
+    }
+
+    // shift press
+    if (extended_select)
+    {
+        if (m_current == NULL) m_current=m_key_current=GetRootItem().m_pItem;
+        // don't change the mark (m_current)
+        SelectItemRange(m_current, item);
+    }
+    else
+    {
+        bool select=TRUE; // the default
+
+        // Check if we need to toggle hilight (ctrl mode)
+        if (!unselect_others)
+          select=!item->IsSelected();
+
+        m_current = m_key_current = item;
+        m_current->SetHilight(select);
+        RefreshLine( m_current );
+    }
+
+    event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGED);
+    GetEventHandler()->ProcessEvent( event );
+}
+
+void wxTreeCtrl::FillArray(wxGenericTreeItem *item,
+                           wxArrayTreeItemIds &array) const
+{
+    if ( item->IsSelected() )
+        array.Add(wxTreeItemId(item));
+
+    if ( item->HasChildren() )
+    {
+        wxArrayGenericTreeItems& children = item->GetChildren();
+        size_t count = children.GetCount();
+        for ( size_t n = 0; n < count; ++n )
+            FillArray(children[n],array);
+    }
+}
+
+size_t wxTreeCtrl::GetSelections(wxArrayTreeItemIds &array) const
+{
+  array.Empty();
+  FillArray(GetRootItem().m_pItem, array);
+
+  return array.Count();
+}
+
+void wxTreeCtrl::EnsureVisible(const wxTreeItemId& item)
+{
+    if (!item.IsOk()) return;
+
+    wxGenericTreeItem *gitem = item.m_pItem;
+
+    // first expand all parent branches
+    wxGenericTreeItem *parent = gitem->GetParent();
+    while ( parent )
+    {
+        Expand(parent);
+        parent = parent->GetParent();
+    }
+
+    //if (parent) CalculatePositions();
+
+    ScrollTo(item);
+}
+
+void wxTreeCtrl::ScrollTo(const wxTreeItemId &item)
+{
+    if (!item.IsOk()) return;
+
+    // We have to call this here because the label in
+    // question might just have been added and no screen
+    // update taken place.
+    if (m_dirty) wxYield();
+
+    wxGenericTreeItem *gitem = item.m_pItem;
+
+    // now scroll to the item
+    int item_y = gitem->GetY();
+
+    int start_x = 0;
+    int start_y = 0;
+    ViewStart( &start_x, &start_y );
+    start_y *= PIXELS_PER_UNIT;
+
+    int client_h = 0;
+    int client_w = 0;
+    GetClientSize( &client_w, &client_h );
+
+    if (item_y < start_y+3)
+    {
+        // going down
+        int x = 0;
+        int y = 0;
+        m_anchor->GetSize( x, y, this );
+        y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
+        x += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
+        int x_pos = GetScrollPos( wxHORIZONTAL );
+        // Item should appear at top
+        SetScrollbars( PIXELS_PER_UNIT, PIXELS_PER_UNIT, x/PIXELS_PER_UNIT, y/PIXELS_PER_UNIT, x_pos, item_y/PIXELS_PER_UNIT );
+    }
+    else if (item_y+GetLineHeight(gitem) > start_y+client_h)
+    {
+        // going up
+        int x = 0;
+        int y = 0;
+        m_anchor->GetSize( x, y, this );
+        y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
+        x += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
+        item_y += PIXELS_PER_UNIT+2;
+        int x_pos = GetScrollPos( wxHORIZONTAL );
+        // Item should appear at bottom
+        SetScrollbars( PIXELS_PER_UNIT, PIXELS_PER_UNIT, x/PIXELS_PER_UNIT, y/PIXELS_PER_UNIT, x_pos, (item_y+GetLineHeight(gitem)-client_h)/PIXELS_PER_UNIT );
+    }
+}
+
+// FIXME: tree sorting functions are not reentrant and not MT-safe!
+static wxTreeCtrl *s_treeBeingSorted = NULL;
+
+static int LINKAGEMODE tree_ctrl_compare_func(wxGenericTreeItem **item1,
+                                  wxGenericTreeItem **item2)
+{
+    wxCHECK_MSG( s_treeBeingSorted, 0, wxT("bug in wxTreeCtrl::SortChildren()") );
+
+    return s_treeBeingSorted->OnCompareItems(*item1, *item2);
+}
+
+int wxTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
+                               const wxTreeItemId& item2)
+{
+    return wxStrcmp(GetItemText(item1), GetItemText(item2));
+}
+
+void wxTreeCtrl::SortChildren(const wxTreeItemId& itemId)
+{
+    wxCHECK_RET( itemId.IsOk(), wxT("invalid tree item") );
+
+    wxGenericTreeItem *item = itemId.m_pItem;
+
+    wxCHECK_RET( !s_treeBeingSorted,
+                 wxT("wxTreeCtrl::SortChildren is not reentrant") );
+
+    wxArrayGenericTreeItems& children = item->GetChildren();
+    if ( children.Count() > 1 )
+    {
+        s_treeBeingSorted = this;
+        children.Sort(tree_ctrl_compare_func);
+        s_treeBeingSorted = NULL;
+
+        m_dirty = TRUE;
+    }
+    //else: don't make the tree dirty as nothing changed
+}
+
+wxImageList *wxTreeCtrl::GetImageList() const
+{
+    return m_imageListNormal;
+}
+
+wxImageList *wxTreeCtrl::GetStateImageList() const
+{
+    return m_imageListState;
+}
+
+void wxTreeCtrl::SetImageList(wxImageList *imageList)
+{
+    m_imageListNormal = imageList;
+
+    // Calculate a m_lineHeight value from the image sizes.
+    // May be toggle off. Then wxTreeCtrl will spread when
+    // necessary (which might look ugly).
+#if 1
+    wxClientDC dc(this);
+    m_lineHeight = (int)(dc.GetCharHeight() + 4);
+    int width = 0, height = 0,
+        n = m_imageListNormal->GetImageCount();
+        
+    for (int i = 0; i < n ; i++)
+    {
+        m_imageListNormal->GetSize(i, width, height);
+        if (height > m_lineHeight) m_lineHeight = height;
+    }
+
+    if (m_lineHeight < 40) 
+        m_lineHeight += 2;                 // at least 2 pixels
+    else 
+        m_lineHeight += m_lineHeight/10;   // otherwise 10% extra spacing
+#endif
+}
+
+void wxTreeCtrl::SetStateImageList(wxImageList *imageList)
+{
+    m_imageListState = imageList;
+}
+
+// -----------------------------------------------------------------------------
+// helpers
+// -----------------------------------------------------------------------------
 
 void wxTreeCtrl::AdjustMyScrollbars()
 {
-  if (m_anchor)
-  {
-    int x = 0;
-    int y = 0;
-    m_anchor->GetSize( x, y );
-    y += 2*m_lineHeight;
-    int x_pos = GetScrollPos( wxHORIZONTAL );
-    int y_pos = GetScrollPos( wxVERTICAL );
-    SetScrollbars( 10, 10, x/10, y/10, x_pos, y_pos );
-  }
-  else
-  {
-    SetScrollbars( 0, 0, 0, 0 );
-  };
-};
+    if (m_anchor)
+    {
+        int x = 0;
+        int y = 0;
+        m_anchor->GetSize( x, y, this );
+        y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
+        x += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
+        int x_pos = GetScrollPos( wxHORIZONTAL );
+        int y_pos = GetScrollPos( wxVERTICAL );
+        SetScrollbars( PIXELS_PER_UNIT, PIXELS_PER_UNIT, x/PIXELS_PER_UNIT, y/PIXELS_PER_UNIT, x_pos, y_pos );
+    }
+    else
+    {
+        SetScrollbars( 0, 0, 0, 0 );
+    }
+}
+
+int wxTreeCtrl::GetLineHeight(wxGenericTreeItem *item) const
+{
+    if (GetWindowStyleFlag() & wxTR_HAS_VARIABLE_ROW_HEIGHT)
+        return item->GetHeight();
+    else
+        return m_lineHeight;
+}
 
-void wxTreeCtrl::PaintLevel( wxGenericTreeItem *item, wxPaintDC &dc, int level, int &y )
+void wxTreeCtrl::PaintItem(wxGenericTreeItem *item, wxDC& dc)
 {
-  int horizX = level*m_indent;
+    wxTreeItemAttr *attr = item->GetAttributes();
+    if ( attr && attr->HasFont() )
+        dc.SetFont(attr->GetFont());
+    else if (item->IsBold())
+        dc.SetFont(m_boldFont);
+
+    long text_w = 0;
+    long text_h = 0;
+    dc.GetTextExtent( item->GetText(), &text_w, &text_h );
 
-  item->m_x = horizX+33;
-  item->m_y = y-m_lineHeight/3;
-  item->m_height = m_lineHeight;
+    int image_h = 0;
+    int image_w = 0;
+    int image = item->GetCurrentImage();
+    if ( image != NO_IMAGE )
+    {
+        m_imageListNormal->GetSize( image, image_w, image_h );
+        image_w += 4;
+    }
 
-  item->SetCross( horizX+15, y );
+    int total_h = GetLineHeight(item);
 
-  int oldY = y;
+    dc.DrawRectangle( item->GetX()-2, item->GetY(), item->GetWidth()+2, total_h );
+
+    if ( image != NO_IMAGE )
+    {
+        dc.SetClippingRegion( item->GetX(), item->GetY(), image_w-2, total_h );
+        m_imageListNormal->Draw( image, dc,
+                                 item->GetX(),
+                                 item->GetY() +((total_h > image_h)?((total_h-image_h)/2):0),
+                                 wxIMAGELIST_DRAW_TRANSPARENT );
+        dc.DestroyClippingRegion();
+    }
+
+    bool hasBgCol = attr && attr->HasBackgroundColour();
+    dc.SetBackgroundMode(hasBgCol ? wxSOLID : wxTRANSPARENT);
+    if ( hasBgCol )
+        dc.SetTextBackground(attr->GetBackgroundColour());
+    dc.DrawText( item->GetText(), image_w + item->GetX(), item->GetY()
+                 + ((total_h > text_h) ? (total_h - text_h)/2 : 0));
+
+    // restore normal font
+    dc.SetFont( m_normalFont );
+}
+
+// Now y stands for the top of the item, whereas it used to stand for middle !
+void wxTreeCtrl::PaintLevel( wxGenericTreeItem *item, wxDC &dc, int level, int &y )
+{
+    int horizX = level*m_indent;
+
+    item->SetX( horizX+m_indent+m_spacing );
+    item->SetY( y );
+
+    int oldY = y;
+    y+=GetLineHeight(item)/2;
+
+    item->SetCross( horizX+m_indent, y );
+
+    int exposed_x = dc.LogicalToDeviceX( 0 );
+    int exposed_y = dc.LogicalToDeviceY( item->GetY() );
+
+    if (IsExposed( exposed_x, exposed_y, 10000, GetLineHeight(item) ))  // 10000 = very much
+    {
+        int startX = horizX;
+        int endX = horizX + (m_indent-5);
+
+//        if (!item->HasChildren()) endX += (m_indent+5);
+        if (!item->HasChildren()) endX += 20;
+
+        dc.DrawLine( startX, y, endX, y );
 
-  if (IsExposed( 0, item->m_y-2, 10000, m_lineHeight+4 ))
-  {
-    int startX = horizX;
-    int endX = horizX + 10;
-
-    if (!item->HasChildren()) endX += 20;
-    dc.DrawLine( startX, y, endX, y );
-
-      if (item->HasChildren())
-      {
-        dc.DrawLine( horizX+20, y, horizX+30, y );
-        dc.SetPen( *wxGREY_PEN );
-        dc.DrawRectangle( horizX+10, y-4, 11, 9 );
-        dc.SetPen( *wxBLACK_PEN );
-        dc.DrawLine( horizX+13, y, horizX+18, y );
         if (item->HasPlus())
-          dc.DrawLine( horizX+15, y-2, horizX+15, y+3 );
-      };
-
-      if (item->HasHilight())
-      {
-        dc.SetTextForeground( wxSystemSettings::GetSystemColour( wxSYS_COLOUR_HIGHLIGHTTEXT ) );
-        dc.SetBrush( *m_hilightBrush );
-        long tw, th;
-        dc.GetTextExtent( item->m_text, &tw, &th );
-        if (m_hasFocus)
         {
-          dc.SetPen( *wxBLACK_PEN );
-          dc.DrawRectangle( item->m_x-2, item->m_y-2, tw+4, th+4 );
+            dc.DrawLine( horizX+(m_indent+5), y, horizX+(m_indent+15), y );
+            dc.SetPen( *wxGREY_PEN );
+            dc.SetBrush( *wxWHITE_BRUSH );
+            dc.DrawRectangle( horizX+(m_indent-5), y-4, 11, 9 );
+
+            dc.SetPen( *wxBLACK_PEN );
+            dc.DrawLine( horizX+(m_indent-2), y, horizX+(m_indent+3), y );
+            if (!item->IsExpanded())
+                dc.DrawLine( horizX+m_indent, y-2, horizX+m_indent, y+3 );
+
+            dc.SetPen( m_dottedPen );
+        }
+
+        wxPen *pen = wxTRANSPARENT_PEN;
+        wxBrush *brush;                 // FIXME is this really needed?
+        wxColour colText;
+
+        if ( item->IsSelected() )
+        {
+            colText = wxSystemSettings::GetSystemColour( wxSYS_COLOUR_HIGHLIGHTTEXT );
+
+            brush = m_hilightBrush;
+
+            if ( m_hasFocus )
+               pen = wxBLACK_PEN;
+
         }
         else
         {
-          dc.SetPen( *wxTRANSPARENT_PEN );
-          dc.DrawRectangle( item->m_x-2, item->m_y-2, tw+4, th+4 );
+            wxTreeItemAttr *attr = item->GetAttributes();
+            if ( attr && attr->HasTextColour() )
+                colText = attr->GetTextColour();
+            else
+                colText = *wxBLACK;
+
+            brush = wxWHITE_BRUSH;
         }
-        dc.DrawText( item->m_text, item->m_x, item->m_y );
 
-        dc.SetPen( *wxBLACK_PEN );
-        dc.SetTextForeground( *wxBLACK );
+        // prepare to draw
+        dc.SetTextForeground(colText);
+        dc.SetPen(*pen);
+        dc.SetBrush(*brush);
+
+        // draw
+        PaintItem(item, dc);
+
+        // restore DC objects
         dc.SetBrush( *wxWHITE_BRUSH );
-      }
-      else
-      {
-        dc.SetPen( *wxTRANSPARENT_PEN );
-        long tw, th;
-        dc.GetTextExtent( item->m_text, &tw, &th );
-        dc.DrawRectangle( item->m_x-2, item->m_y-2, tw+4, th+4 );
-        dc.DrawText( item->m_text, item->m_x, item->m_y );
-        dc.SetPen( *wxBLACK_PEN );
-      };
-  };
-
-  if (item->NumberOfVisibleChildren() == 0) return;
-
-  int semiOldY = y;
-
-  wxNode *node = item->m_children.First();
-  while (node)
-  {
-    wxGenericTreeItem *child = (wxGenericTreeItem *)node->Data();
+        dc.SetPen( m_dottedPen );
+        dc.SetTextForeground( *wxBLACK );
+    }
 
-    y += m_lineHeight;
-    semiOldY = y;
+    y = oldY+GetLineHeight(item);
 
-    PaintLevel( child, dc, level+1, y );
+    if (item->IsExpanded())
+    {
+        oldY+=GetLineHeight(item)/2;
+        int semiOldY=0;
 
-    node = node->Next();
-  };
+        wxArrayGenericTreeItems& children = item->GetChildren();
+        size_t n, count = children.Count();
+        for ( n = 0; n < count; ++n )
+        {
+            semiOldY=y;
+            PaintLevel( children[n], dc, level+1, y );
+        }
 
-  dc.DrawLine( horizX+15, oldY+5, horizX+15, semiOldY );
+        // it may happen that the item is expanded but has no items (when you
+        // delete all its children for example) - don't draw the vertical line
+        // in this case
+        if (count > 0)
+        {
+            semiOldY+=GetLineHeight(children[--n])/2;
+            dc.DrawLine( horizX+m_indent, oldY+5, horizX+m_indent, semiOldY );
+        }
+    }
 }
 
-void wxTreeCtrl::OnPaint( const wxPaintEvent &WXUNUSED(event) )
+void wxTreeCtrl::DrawBorder(wxTreeItemId &item)
 {
-  if (!m_anchor) return;
+  if (!item) return;
 
-  if (!m_dc)
-  {
-    m_dc = new wxPaintDC(this);
-    PrepareDC( *m_dc );
-  };
+    wxGenericTreeItem *i=item.m_pItem;
 
-  m_dc->SetFont( wxSystemSettings::GetSystemFont( wxSYS_SYSTEM_FONT ) );
+    wxClientDC dc(this);
+    PrepareDC( dc );
+    dc.SetLogicalFunction(wxINVERT);
 
-  m_dc->SetPen( m_dottedPen );
-  m_lineHeight = (int)(m_dc->GetCharHeight() + 4);
+    int w,h,x;
+    ViewStart(&x,&h);     // we only need x
+    GetClientSize(&w,&h); // we only need w
 
-  int y = m_lineHeight / 2 + 2;
-  PaintLevel( m_anchor, *m_dc, 0, y );
-};
+    h=GetLineHeight(i)+1;
+    // 2 white column at border
+    dc.DrawRectangle( PIXELS_PER_UNIT*x+2, i->GetY()-1, w-6, h);
+}
 
-void wxTreeCtrl::OnSetFocus( const wxFocusEvent &WXUNUSED(event) )
+void wxTreeCtrl::DrawLine(wxTreeItemId &item, bool below)
 {
-  m_hasFocus = TRUE;
-  if (m_current) RefreshLine( m_current );
-};
+  if (!item) return;
+
+    wxGenericTreeItem *i=item.m_pItem;
+
+    wxClientDC dc(this);
+    PrepareDC( dc );
+    dc.SetLogicalFunction(wxINVERT);
+
+    int w,h,y;
+    GetSize(&w,&h);
 
-void wxTreeCtrl::OnKillFocus( const wxFocusEvent &WXUNUSED(event) )
+    if (below) y=i->GetY()+GetLineHeight(i)-1;
+    else y=i->GetY();
+
+    dc.DrawLine( 0, y, w, y);
+}
+
+// -----------------------------------------------------------------------------
+// wxWindows callbacks
+// -----------------------------------------------------------------------------
+
+void wxTreeCtrl::OnPaint( wxPaintEvent &WXUNUSED(event) )
 {
-  m_hasFocus = FALSE;
-  if (m_current) RefreshLine( m_current );
-};
+    if ( !m_anchor)
+        return;
+
+    wxPaintDC dc(this);
+    PrepareDC( dc );
+
+    dc.SetFont( m_normalFont );
+    dc.SetPen( m_dottedPen );
+
+    // this is now done dynamically
+    //if(GetImageList() == NULL)
+    // m_lineHeight = (int)(dc.GetCharHeight() + 4);
+
+    int y = 2;
+    PaintLevel( m_anchor, dc, 0, y );
+}
+
+void wxTreeCtrl::OnSetFocus( wxFocusEvent &WXUNUSED(event) )
+{
+    m_hasFocus = TRUE;
+
+    if (m_current) RefreshLine( m_current );
+}
+
+void wxTreeCtrl::OnKillFocus( wxFocusEvent &WXUNUSED(event) )
+{
+    m_hasFocus = FALSE;
+
+    if (m_current) RefreshLine( m_current );
+}
 
 void wxTreeCtrl::OnChar( wxKeyEvent &event )
 {
-  event.Skip();
-};
+    wxTreeEvent te( wxEVT_COMMAND_TREE_KEY_DOWN, GetId() );
+    te.m_code = event.KeyCode();
+    te.SetEventObject( this );
+    GetEventHandler()->ProcessEvent( te );
+
+    if ( (m_current == 0) || (m_key_current == 0) )
+    {
+        event.Skip();
+        return;
+    }
+
+    bool is_multiple=(GetWindowStyleFlag() & wxTR_MULTIPLE);
+    bool extended_select=(event.ShiftDown() && is_multiple);
+    bool unselect_others=!(extended_select || (event.ControlDown() && is_multiple));
 
-void wxTreeCtrl::OnMouse( const wxMouseEvent &event )
+    switch (event.KeyCode())
+    {
+        case '+':
+        case WXK_ADD:
+            if (m_current->HasPlus() && !IsExpanded(m_current))
+            {
+                Expand(m_current);
+            }
+            break;
+
+        case '-':
+        case WXK_SUBTRACT:
+            if (IsExpanded(m_current))
+            {
+                Collapse(m_current);
+            }
+            break;
+
+        case '*':
+        case WXK_MULTIPLY:
+            Toggle(m_current);
+            break;
+
+        case ' ':
+        case WXK_RETURN:
+            {
+                wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_ACTIVATED, GetId() );
+                event.m_item = m_current;
+                event.m_code = 0;
+                event.SetEventObject( this );
+                GetEventHandler()->ProcessEvent( event );
+            }
+            break;
+
+            // up goes to the previous sibling or to the last of its children if
+            // it's expanded
+        case WXK_UP:
+            {
+                wxTreeItemId prev = GetPrevSibling( m_key_current );
+                if (!prev)
+                {
+                    prev = GetParent( m_key_current );
+                    if (prev)
+                    {
+                        long cockie = 0;
+                        wxTreeItemId current = m_key_current;
+                        if (current == GetFirstChild( prev, cockie ))
+                        {
+                            // otherwise we return to where we came from
+                            SelectItem( prev, unselect_others, extended_select );
+                            m_key_current=prev.m_pItem;
+                            EnsureVisible( prev );
+                            break;
+                        }
+                    }
+                }
+                if (prev)
+                {
+                    while ( IsExpanded(prev) && HasChildren(prev) )
+                    {
+                        wxTreeItemId child = GetLastChild(prev);
+                        if ( child )
+                        {
+                            prev = child;
+                        }
+                    }
+
+                    SelectItem( prev, unselect_others, extended_select );
+                    m_key_current=prev.m_pItem;
+                    EnsureVisible( prev );
+                }
+            }
+            break;
+
+            // left arrow goes to the parent
+        case WXK_LEFT:
+            {
+                wxTreeItemId prev = GetParent( m_current );
+                if (prev)
+                {
+                    EnsureVisible( prev );
+                    SelectItem( prev, unselect_others, extended_select );
+                }
+            }
+            break;
+
+        case WXK_RIGHT:
+            // this works the same as the down arrow except that we also expand the
+            // item if it wasn't expanded yet
+            Expand(m_current);
+            // fall through
+
+        case WXK_DOWN:
+            {
+                if (IsExpanded(m_key_current) && HasChildren(m_key_current))
+                {
+                    long cookie = 0;
+                    wxTreeItemId child = GetFirstChild( m_key_current, cookie );
+                    SelectItem( child, unselect_others, extended_select );
+                    m_key_current=child.m_pItem;
+                    EnsureVisible( child );
+                }
+                else
+                {
+                    wxTreeItemId next = GetNextSibling( m_key_current );
+//                    if (next == 0)
+                    if (!next)
+                    {
+                        wxTreeItemId current = m_key_current;
+                        while (current && !next)
+                        {
+                            current = GetParent( current );
+                            if (current) next = GetNextSibling( current );
+                        }
+                    }
+//                    if (next != 0)
+                    if (next)
+                    {
+                        SelectItem( next, unselect_others, extended_select );
+                        m_key_current=next.m_pItem;
+                        EnsureVisible( next );
+                    }
+                }
+            }
+            break;
+
+            // <End> selects the last visible tree item
+        case WXK_END:
+            {
+                wxTreeItemId last = GetRootItem();
+
+                while ( last.IsOk() && IsExpanded(last) )
+                {
+                    wxTreeItemId lastChild = GetLastChild(last);
+
+                    // it may happen if the item was expanded but then all of
+                    // its children have been deleted - so IsExpanded() returned
+                    // TRUE, but GetLastChild() returned invalid item
+                    if ( !lastChild )
+                        break;
+
+                    last = lastChild;
+                }
+
+                if ( last.IsOk() )
+                {
+                    EnsureVisible( last );
+                    SelectItem( last, unselect_others, extended_select );
+                }
+            }
+            break;
+
+            // <Home> selects the root item
+        case WXK_HOME:
+            {
+                wxTreeItemId prev = GetRootItem();
+                if (prev)
+                {
+                    EnsureVisible( prev );
+                    SelectItem( prev, unselect_others, extended_select );
+                }
+            }
+            break;
+
+        default:
+            event.Skip();
+    }
+}
+
+wxTreeItemId wxTreeCtrl::HitTest(const wxPoint& point, int& flags)
 {
-  if (!event.LeftDown() &&
-      !event.LeftDClick()) return;
+    // We have to call this here because the label in
+    // question might just have been added and no screen
+    // update taken place.
+    if (m_dirty) wxYield();
 
-  wxClientDC dc(this);
-  PrepareDC(dc);
-  long x = dc.DeviceToLogicalX( (long)event.GetX() );
-  long y = dc.DeviceToLogicalY( (long)event.GetY() );
+    wxClientDC dc(this);
+    PrepareDC(dc);
+    long x = dc.DeviceToLogicalX( (long)point.x );
+    long y = dc.DeviceToLogicalY( (long)point.y );
+    int w, h;
+    GetSize(&w, &h);
 
-  int flag = 0;
-  long id = HitTest( wxPoint(x,y), flag );
-  if (id == -1)
-    return;
-  wxGenericTreeItem *item = FindItem( id );
+    flags=0;
+    if (point.x<0) flags|=wxTREE_HITTEST_TOLEFT;
+    if (point.x>w) flags|=wxTREE_HITTEST_TORIGHT;
+    if (point.y<0) flags|=wxTREE_HITTEST_ABOVE;
+    if (point.y>h) flags|=wxTREE_HITTEST_BELOW;
 
-  if (!item) return;
-  if ((flag != wxTREE_HITTEST_ONITEMBUTTON) &&
-      (flag != wxTREE_HITTEST_ONITEMLABEL)) return;
+    return m_anchor->HitTest( wxPoint(x, y), this, flags);
+}
 
-  SelectItem(item);
+/* **** */
 
-  if (event.LeftDClick())
-    m_current->SendKeyDown( this );
+void wxTreeCtrl::Edit( const wxTreeItemId& item )
+{
+    if (!item.IsOk()) return;
 
-  if (flag == wxTREE_HITTEST_ONITEMBUTTON)
-  {
-    ExpandItem( item->m_itemId, wxTREE_EXPAND_TOGGLE );
-    return;
-  };
-};
+    m_currentEdit = item.m_pItem;
+
+    wxTreeEvent te( wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT, GetId() );
+    te.m_item = m_currentEdit;
+    te.SetEventObject( this );
+    GetEventHandler()->ProcessEvent( te );
+
+    if (!te.IsAllowed()) return;
+
+    // We have to call this here because the label in
+    // question might just have been added and no screen
+    // update taken place.
+    if (m_dirty) wxYield();
+
+    wxString s = m_currentEdit->GetText();
+    int x = m_currentEdit->GetX();
+    int y = m_currentEdit->GetY();
+    int w = m_currentEdit->GetWidth();
+    int h = m_currentEdit->GetHeight();
+
+    int image_h = 0;
+    int image_w = 0;
+
+    int image = m_currentEdit->GetCurrentImage();
+    if ( image != NO_IMAGE )
+    {
+        m_imageListNormal->GetSize( image, image_w, image_h );
+        image_w += 4;
+    }
+    x += image_w;
+    w -= image_w + 4; // I don't know why +4 is needed
+
+    wxClientDC dc(this);
+    PrepareDC( dc );
+    x = dc.LogicalToDeviceX( x );
+    y = dc.LogicalToDeviceY( y );
+
+    wxTreeTextCtrl *text = new wxTreeTextCtrl(
+      this, -1, &m_renameAccept, &m_renameRes, this, s, wxPoint(x-4,y-4), wxSize(w+11,h+8) );
+    text->SetFocus();
+}
 
-void wxTreeCtrl::CalculateLevel( wxGenericTreeItem *item, wxPaintDC &dc, int level, int &y )
+void wxTreeCtrl::OnRenameTimer()
 {
-  int horizX = level*m_indent;
+    Edit( m_current );
+}
 
-  item->m_x = horizX+33;
-  item->m_y = y-m_lineHeight/3-2;
-  item->m_height = m_lineHeight;
+void wxTreeCtrl::OnRenameAccept()
+{
+    wxTreeEvent le( wxEVT_COMMAND_TREE_END_LABEL_EDIT, GetId() );
+    le.m_item = m_currentEdit;
+    le.SetEventObject( this );
+    le.m_label = m_renameRes;
+    GetEventHandler()->ProcessEvent( le );
 
-  if (item->NumberOfVisibleChildren() == 0) return;
+    if (!le.IsAllowed()) return;
 
-  wxNode *node = item->m_children.First();
-  while (node)
-  {
-    wxGenericTreeItem *child = (wxGenericTreeItem *)node->Data();
+    SetItemText( m_currentEdit, m_renameRes );
+}
+
+void wxTreeCtrl::OnMouse( wxMouseEvent &event )
+{
+    if ( !(event.LeftUp() || event.RightDown() || event.LeftDClick() || event.Dragging()) ) return;
 
-    y += m_lineHeight;
-    CalculateLevel( child, dc, level+1, y );
+    if ( !m_anchor ) return;
 
-    node = node->Next();
-  };
-};
+    wxClientDC dc(this);
+    PrepareDC(dc);
+    long x = dc.DeviceToLogicalX( (long)event.GetX() );
+    long y = dc.DeviceToLogicalY( (long)event.GetY() );
+
+    int flags=0;
+    wxGenericTreeItem *item = m_anchor->HitTest( wxPoint(x,y), this, flags);
+    bool onButton = flags & wxTREE_HITTEST_ONITEMBUTTON;
+
+    if (event.Dragging())
+    {
+        if (m_dragCount == 0)
+            m_dragStart = wxPoint(x,y);
+
+        m_dragCount++;
+
+        if (m_dragCount != 3) return;
+
+        int command = wxEVT_COMMAND_TREE_BEGIN_DRAG;
+        if (event.RightIsDown()) command = wxEVT_COMMAND_TREE_BEGIN_RDRAG;
+
+        wxTreeEvent nevent( command, GetId() );
+        nevent.m_item = m_current;
+        nevent.SetEventObject(this);
+        GetEventHandler()->ProcessEvent(nevent);
+        return;
+    }
+    else
+    {
+        m_dragCount = 0;
+    }
+
+    if (item == NULL) return;  /* we hit the blank area */
+
+    if (event.RightDown()) {
+       wxTreeEvent nevent(wxEVT_COMMAND_TREE_ITEM_RIGHT_CLICK,GetId());
+       nevent.m_item=item;
+       nevent.m_code=0;
+       nevent.SetEventObject(this);
+       GetEventHandler()->ProcessEvent(nevent);
+       return;
+    }
+
+    if (event.LeftUp() && (item == m_current) &&
+        (flags & wxTREE_HITTEST_ONITEMLABEL) &&
+        HasFlag(wxTR_EDIT_LABELS) )
+    {
+        m_renameTimer->Start( 100, TRUE );
+        return;
+    }
+
+    bool is_multiple=(GetWindowStyleFlag() & wxTR_MULTIPLE);
+    bool extended_select=(event.ShiftDown() && is_multiple);
+    bool unselect_others=!(extended_select || (event.ControlDown() && is_multiple));
+
+    if (onButton)
+    {
+        Toggle( item );
+        if (is_multiple)
+            return;
+    }
+
+    SelectItem(item, unselect_others, extended_select);
+
+    if (event.LeftDClick())
+    {
+        wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_ACTIVATED, GetId() );
+        event.m_item = item;
+        event.m_code = 0;
+        event.SetEventObject( this );
+        GetEventHandler()->ProcessEvent( event );
+    }
+}
+
+void wxTreeCtrl::OnIdle( wxIdleEvent &WXUNUSED(event) )
+{
+    /* after all changes have been done to the tree control,
+     * we actually redraw the tree when everything is over */
+
+    if (!m_dirty)
+        return;
+
+    m_dirty = FALSE;
+
+    CalculatePositions();
+    Refresh();
+    AdjustMyScrollbars();
+}
+
+void wxTreeCtrl::CalculateSize( wxGenericTreeItem *item, wxDC &dc )
+{
+    long text_w = 0;
+    long text_h = 0;
+
+    if (item->IsBold())
+        dc.SetFont(m_boldFont);
+
+    dc.GetTextExtent( item->GetText(), &text_w, &text_h );
+    text_h+=2;
+
+    // restore normal font
+    dc.SetFont( m_normalFont );
+
+    int image_h = 0;
+    int image_w = 0;
+    int image = item->GetCurrentImage();
+    if ( image != NO_IMAGE )
+    {
+        m_imageListNormal->GetSize( image, image_w, image_h );
+        image_w += 4;
+    }
+
+    int total_h = (image_h > text_h) ? image_h : text_h;
+
+    if (total_h < 40) 
+        total_h += 2;            // at least 2 pixels
+    else 
+        total_h += total_h/10;   // otherwise 10% extra spacing
+
+    item->SetHeight(total_h);
+    if (total_h>m_lineHeight) m_lineHeight=total_h;
+
+    item->SetWidth(image_w+text_w+2);
+}
+
+// -----------------------------------------------------------------------------
+// for developper : y is now the top of the level
+// not the middle of it !
+void wxTreeCtrl::CalculateLevel( wxGenericTreeItem *item, wxDC &dc, int level, int &y )
+{
+    int horizX = level*m_indent;
+
+    CalculateSize( item, dc );
+
+    // set its position
+    item->SetX( horizX+m_indent+m_spacing );
+    item->SetY( y );
+    y+=GetLineHeight(item);
+
+    if ( !item->IsExpanded() )
+    {
+        // we dont need to calculate collapsed branches
+        return;
+    }
+
+    wxArrayGenericTreeItems& children = item->GetChildren();
+    size_t n, count = children.Count();
+    for (n = 0; n < count; ++n )
+        CalculateLevel( children[n], dc, level+1, y );  // recurse
+}
 
 void wxTreeCtrl::CalculatePositions()
 {
-  if (!m_anchor)
-    return;
+    if ( !m_anchor ) return;
 
-  wxClientDC dc(this);
-  PrepareDC( dc );
+    wxClientDC dc(this);
+    PrepareDC( dc );
 
-  dc.SetFont( wxSystemSettings::GetSystemFont( wxSYS_SYSTEM_FONT ) );
+    dc.SetFont( m_normalFont );
 
-  dc.SetPen( m_dottedPen );
-  m_lineHeight = (int)(dc.GetCharHeight() + 4);
+    dc.SetPen( m_dottedPen );
+    //if(GetImageList() == NULL)
+    // m_lineHeight = (int)(dc.GetCharHeight() + 4);
 
-  int y = m_lineHeight / 2 + 2;
-  CalculateLevel( m_anchor, dc, 0, y );
-};
+    int y = 2;
+    CalculateLevel( m_anchor, dc, 0, y ); // start recursion
+}
 
-wxGenericTreeItem *wxTreeCtrl::FindItem( long itemId ) const
+void wxTreeCtrl::RefreshSubtree(wxGenericTreeItem *item)
 {
-  if (!m_anchor) return NULL;
-  return m_anchor->FindItem( itemId );
-};
+    if (m_dirty) return;
+
+    wxClientDC dc(this);
+    PrepareDC(dc);
+
+    int cw = 0;
+    int ch = 0;
+    GetClientSize( &cw, &ch );
+
+    wxRect rect;
+    rect.x = dc.LogicalToDeviceX( 0 );
+    rect.width = cw;
+    rect.y = dc.LogicalToDeviceY( item->GetY() );
+    rect.height = ch;
+
+    Refresh( TRUE, &rect );
+
+    AdjustMyScrollbars();
+}
 
 void wxTreeCtrl::RefreshLine( wxGenericTreeItem *item )
 {
-  if (!item) return;
-  wxClientDC dc(this);
-  PrepareDC( dc );
-  wxRect rect;
-  rect.x = dc.LogicalToDeviceX( item->m_x-2 );
-  rect.y = dc.LogicalToDeviceY( item->m_y-2 );
-  rect.width = 1000;
-  rect.height = dc.GetCharHeight()+4;
-  Refresh( TRUE, &rect );
-};
+    if (m_dirty) return;
+
+    wxClientDC dc(this);
+    PrepareDC( dc );
+
+    int cw = 0;
+    int ch = 0;
+    GetClientSize( &cw, &ch );
 
+    wxRect rect;
+    rect.x = dc.LogicalToDeviceX( 0 );
+    rect.y = dc.LogicalToDeviceY( item->GetY() );
+    rect.width = cw;
+    rect.height = GetLineHeight(item); //dc.GetCharHeight() + 6;
 
+    Refresh( TRUE, &rect );
+}