// wrappers for TreeView_GetItem/TreeView_SetItem
static bool IsItemSelected(HWND hwndTV, HTREEITEM hItem)
{
+
TV_ITEM tvi;
tvi.mask = TVIF_STATE | TVIF_HANDLE;
tvi.stateMask = TVIS_SELECTED;
UINT mask_, // fields which are valid
UINT stateMask_ = 0) // for TVIF_STATE only
{
+ wxZeroMemory(*this);
+
// hItem member is always valid
mask = mask_ | TVIF_HANDLE;
stateMask = stateMask_;
}
};
+// wxVirutalNode is used in place of a single root when 'hidden' root is
+// specified.
+class wxVirtualNode : public wxTreeViewItem
+{
+public:
+ wxVirtualNode(wxTreeItemData *data)
+ : wxTreeViewItem(TVI_ROOT, 0)
+ {
+ m_data = data;
+ }
+
+ ~wxVirtualNode()
+ {
+ delete m_data;
+ }
+
+ wxTreeItemData *GetData() const { return m_data; }
+ void SetData(wxTreeItemData *data) { delete m_data; m_data = data; }
+
+private:
+ wxTreeItemData *m_data;
+};
+
#ifdef __VISUALC__
#pragma warning( default : 4097 )
#endif
+// a macro to get the virtual root, returns NULL if none
+#define GET_VIRTUAL_ROOT() ((wxVirtualNode *)m_pVirtualRoot)
+
+// returns TRUE if the item is the virtual root
+#define IS_VIRTUAL_ROOT(item) (HITEM(item) == TVI_ROOT)
+
// a class which encapsulates the tree traversal logic: it vists all (unless
// OnVisit() returns FALSE) items under the given one
class wxTreeTraversal
virtual bool OnVisit(const wxTreeItemId& item)
{
+ // can't visit a virtual node.
+ if ( (GetTree()->GetRootItem() == item) && (GetTree()->GetWindowStyle() & wxTR_HIDE_ROOT))
+ {
+ return TRUE;
+ }
+
#if wxUSE_CHECKBOXES_IN_MULTI_SEL_TREE
if ( GetTree()->IsItemChecked(item) )
#else
m_hasAnyAttr = FALSE;
m_dragImage = NULL;
m_htSelStart = 0;
+ m_pVirtualRoot = NULL;
// initialize the global array of events now as it can't be done statically
// with the wxEVT_XXX values being allocated during run-time only
DeleteTextCtrl();
// delete user data to prevent memory leaks
+ // also deletes hidden root node storage.
DeleteAllItems();
if (m_ownsImageListNormal) delete m_imageListNormal;
bool wxTreeCtrl::DoGetItem(wxTreeViewItem* tvItem) const
{
+ wxCHECK_MSG( tvItem->hItem != TVI_ROOT, FALSE,
+ _T("can't retrieve virtual root item") );
+
if ( !TreeView_GetItem(GetHwnd(), tvItem) )
{
wxLogLastError(wxT("TreeView_GetItem"));
void wxTreeCtrl::SetImageList(wxImageList *imageList)
{
- if (m_ownsImageListNormal) delete m_imageListNormal;
+ if (m_ownsImageListNormal)
+ delete m_imageListNormal;
+
SetAnyImageList(m_imageListNormal = imageList, TVSIL_NORMAL);
m_ownsImageListNormal = FALSE;
}
void wxTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text)
{
+ if ( IS_VIRTUAL_ROOT(item) )
+ return;
+
wxTreeViewItem tvItem(item, TVIF_TEXT);
tvItem.pszText = (wxChar *)text.c_str(); // conversion is ok
DoSetItem(&tvItem);
int wxTreeCtrl::GetItemImage(const wxTreeItemId& item,
wxTreeItemIcon which) const
{
+ if ( (HITEM(item) == TVI_ROOT) && (m_windowStyle & wxTR_HIDE_ROOT) )
+ {
+ // TODO: Maybe a hidden root can still provide images?
+ return -1;
+ }
+
if ( HasIndirectData(item) )
{
return DoGetItemImageFromData(item, which);
void wxTreeCtrl::SetItemImage(const wxTreeItemId& item, int image,
wxTreeItemIcon which)
{
+ if ( IS_VIRTUAL_ROOT(item) )
+ {
+ // TODO: Maybe a hidden root can still store images?
+ return;
+ }
+
int imageNormal, imageSel;
switch ( which )
{
wxTreeItemData *wxTreeCtrl::GetItemData(const wxTreeItemId& item) const
{
wxTreeViewItem tvItem(item, TVIF_PARAM);
+
+ // Hidden root may have data.
+ if ( IS_VIRTUAL_ROOT(item) )
+ {
+ return GET_VIRTUAL_ROOT()->GetData();
+ }
+
+ // Visible node.
if ( !DoGetItem(&tvItem) )
{
return NULL;
void wxTreeCtrl::SetItemData(const wxTreeItemId& item, wxTreeItemData *data)
{
+ if ( IS_VIRTUAL_ROOT(item) )
+ {
+ GET_VIRTUAL_ROOT()->SetData(data);
+ }
+
// first, associate this piece of data with this item
if ( data )
{
void wxTreeCtrl::SetItemHasChildren(const wxTreeItemId& item, bool has)
{
+ if ( IS_VIRTUAL_ROOT(item) )
+ return;
+
wxTreeViewItem tvItem(item, TVIF_CHILDREN);
tvItem.cChildren = (int)has;
DoSetItem(&tvItem);
void wxTreeCtrl::SetItemBold(const wxTreeItemId& item, bool bold)
{
+ if ( IS_VIRTUAL_ROOT(item) )
+ return;
+
wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_BOLD);
tvItem.state = bold ? TVIS_BOLD : 0;
DoSetItem(&tvItem);
void wxTreeCtrl::SetItemDropHighlight(const wxTreeItemId& item, bool highlight)
{
+ if ( IS_VIRTUAL_ROOT(item) )
+ return;
+
wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_DROPHILITED);
tvItem.state = highlight ? TVIS_DROPHILITED : 0;
DoSetItem(&tvItem);
void wxTreeCtrl::RefreshItem(const wxTreeItemId& item)
{
+ if ( IS_VIRTUAL_ROOT(item) )
+ return;
+
wxRect rect;
if ( GetBoundingRect(item, rect) )
{
wxTreeItemId wxTreeCtrl::GetRootItem() const
{
+ // Root may be real (visible) or virtual (hidden).
+ if ( GET_VIRTUAL_ROOT() )
+ return TVI_ROOT;
+
return wxTreeItemId((WXHTREEITEM) TreeView_GetRoot(GetHwnd()));
}
wxTreeItemId wxTreeCtrl::GetParent(const wxTreeItemId& item) const
{
- return wxTreeItemId((WXHTREEITEM) TreeView_GetParent(GetHwnd(), HITEM(item)));
+ HTREEITEM hItem;
+
+ if ( IS_VIRTUAL_ROOT(item) )
+ {
+ // no parent for the virtual root
+ hItem = 0;
+ }
+ else // normal item
+ {
+ hItem = TreeView_GetParent(GetHwnd(), HITEM(item));
+ if ( !hItem && HasFlag(wxTR_HIDE_ROOT) )
+ {
+ // the top level items should have the virtual root as their parent
+ hItem = TVI_ROOT;
+ }
+ }
+
+ return wxTreeItemId((WXHTREEITEM)hItem);
}
wxTreeItemId wxTreeCtrl::GetFirstChild(const wxTreeItemId& item,
// receive the desired information.
wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_STATEIMAGEMASK);
+ DoGetItem(&tvItem);
+
// state images are one-based
tvItem.state = (check ? 2 : 1) << 12;
int image, int selectedImage,
wxTreeItemData *data)
{
- return DoInsertItem(wxTreeItemId((long) (WXHTREEITEM) 0), (long)(WXHTREEITEM) 0,
+
+ if ( m_windowStyle & wxTR_HIDE_ROOT )
+ {
+ // create a virtual root item, the parent for all the others
+ m_pVirtualRoot = new wxVirtualNode(data);
+
+ return TVI_ROOT;
+ }
+
+ return DoInsertItem(wxTreeItemId((long)(WXHTREEITEM) 0), (long)(WXHTREEITEM) 0,
text, image, selectedImage, data);
}
void wxTreeCtrl::DeleteAllItems()
{
+ // delete stored root item.
+ delete GET_VIRTUAL_ROOT();
+
if ( !TreeView_DeleteAllItems(GetHwnd()) )
{
wxLogLastError(wxT("TreeView_DeleteAllItems"));
flag == TVE_TOGGLE,
wxT("Unknown flag in wxTreeCtrl::DoExpand") );
+ // A hidden root can be neither expanded nor collapsed.
+ if ( (HITEM(item) == TVI_ROOT) && (m_windowStyle & wxTR_HIDE_ROOT) )
+ {
+ // No action will be taken.
+ return;
+ }
+
// TreeView_Expand doesn't send TVN_ITEMEXPAND(ING) messages, so we must
// emulate them. This behaviour has changed slightly with comctl32.dll
// v 4.70 - now it does send them but only the first time. To maintain
projects / wxWidgets.git / blobdiff