#include "wx/window.h"
#include "wx/msw/private.h"
-#ifndef WX_PRECOMP
- #include "wx/settings.h"
-#endif
-
// Mingw32 is a bit mental even though this is done in winundef
#ifdef GetFirstChild
#undef GetFirstChild
#include "wx/log.h"
#include "wx/dynarray.h"
#include "wx/imaglist.h"
-#include "wx/msw/treectrl.h"
+#include "wx/treectrl.h"
+#include "wx/settings.h"
#ifdef __GNUWIN32__
+#ifndef wxUSE_NORLANDER_HEADERS
#include "wx/msw/gnuwin32/extra.h"
#endif
+#endif
-#if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__)
+#if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__) || defined(wxUSE_NORLANDER_HEADERS)
#include <commctrl.h>
#endif
// ----------------------------------------------------------------------------
// a convenient wrapper around TV_ITEM struct which adds a ctor
+#pragma warning( disable : 4097 )
struct wxTreeViewItem : public TV_ITEM
{
- wxTreeViewItem(const wxTreeItemId& item,
- UINT mask_, UINT stateMask_ = 0)
+ wxTreeViewItem(const wxTreeItemId& item, // the item handle
+ UINT mask_, // fields which are valid
+ UINT stateMask_ = 0) // for TVIF_STATE only
{
- mask = mask_;
+ // hItem member is always valid
+ mask = mask_ | TVIF_HANDLE;
stateMask = stateMask_;
hItem = (HTREEITEM) (WXHTREEITEM) item;
}
};
+#pragma warning( default : 4097 )
+
+// a class which encapsulates the tree traversal logic: it vists all (unless
+// OnVisit() returns FALSE) items under the given one
+class wxTreeTraversal
+{
+public:
+ wxTreeTraversal(const wxTreeCtrl *tree)
+ {
+ m_tree = tree;
+ }
+
+ // do traverse the tree: visit all items (recursively by default) under the
+ // given one; return TRUE if all items were traversed or FALSE if the
+ // traversal was aborted because OnVisit returned FALSE
+ bool DoTraverse(const wxTreeItemId& root, bool recursively = TRUE);
+
+ // override this function to do whatever is needed for each item, return
+ // FALSE to stop traversing
+ virtual bool OnVisit(const wxTreeItemId& item) = 0;
+
+protected:
+ const wxTreeCtrl *GetTree() const { return m_tree; }
+
+private:
+ bool Traverse(const wxTreeItemId& root, bool recursively);
+
+ const wxTreeCtrl *m_tree;
+};
+
+// internal class for getting the selected items
+class TraverseSelections : public wxTreeTraversal
+{
+public:
+ TraverseSelections(const wxTreeCtrl *tree,
+ wxArrayTreeItemIds& selections)
+ : wxTreeTraversal(tree), m_selections(selections)
+ {
+ m_selections.Empty();
+
+ DoTraverse(tree->GetRootItem());
+ }
+
+ virtual bool OnVisit(const wxTreeItemId& item)
+ {
+ if ( GetTree()->IsItemChecked(item) )
+ {
+ m_selections.Add(item);
+ }
+
+ return TRUE;
+ }
+
+private:
+ wxArrayTreeItemIds& m_selections;
+};
+
+// internal class for counting tree items
+class TraverseCounter : public wxTreeTraversal
+{
+public:
+ TraverseCounter(const wxTreeCtrl *tree,
+ const wxTreeItemId& root,
+ bool recursively)
+ : wxTreeTraversal(tree)
+ {
+ m_count = 0;
+
+ DoTraverse(root, recursively);
+ }
+
+ virtual bool OnVisit(const wxTreeItemId& item)
+ {
+ m_count++;
+
+ return TRUE;
+ }
+
+ size_t GetCount() const { return m_count; }
+
+private:
+ size_t m_count;
+};
+
+// ----------------------------------------------------------------------------
+// This class is needed for support of different images: the Win32 common
+// control natively supports only 2 images (the normal one and another for the
+// selected state). We wish to provide support for 2 more of them for folder
+// items (i.e. those which have children): for expanded state and for expanded
+// selected state. For this we use this structure to store the additional items
+// images.
+//
+// There is only one problem with this: when we retrieve the item's data, we
+// don't know whether we get a pointer to wxTreeItemData or
+// wxTreeItemIndirectData. So we have to maintain a list of all items which
+// have indirect data inside the listctrl itself.
+// ----------------------------------------------------------------------------
+class wxTreeItemIndirectData
+{
+public:
+ // ctor associates this data with the item and the real item data becomes
+ // available through our GetData() method
+ wxTreeItemIndirectData(wxTreeCtrl *tree, const wxTreeItemId& item)
+ {
+ for ( size_t n = 0; n < WXSIZEOF(m_images); n++ )
+ {
+ m_images[n] = -1;
+ }
+
+ // save the old data
+ m_data = tree->GetItemData(item);
+
+ // and set ourselves as the new one
+ tree->SetIndirectItemData(item, this);
+ }
+
+ // dtor deletes the associated data as well
+ ~wxTreeItemIndirectData() { delete m_data; }
+
+ // accessors
+ // get the real data associated with the item
+ wxTreeItemData *GetData() const { return m_data; }
+ // change it
+ void SetData(wxTreeItemData *data) { m_data = data; }
+
+ // do we have such image?
+ bool HasImage(wxTreeItemIcon which) const { return m_images[which] != -1; }
+ // get image
+ int GetImage(wxTreeItemIcon which) const { return m_images[which]; }
+ // change it
+ void SetImage(int image, wxTreeItemIcon which) { m_images[which] = image; }
+
+private:
+ // all the images associated with the item
+ int m_images[wxTreeItemIcon_Max];
+
+ wxTreeItemData *m_data;
+};
// ----------------------------------------------------------------------------
// macros
// implementation
// ============================================================================
+// ----------------------------------------------------------------------------
+// tree traversal
+// ----------------------------------------------------------------------------
+
+bool wxTreeTraversal::DoTraverse(const wxTreeItemId& root, bool recursively)
+{
+ if ( !OnVisit(root) )
+ return FALSE;
+
+ return Traverse(root, recursively);
+}
+
+bool wxTreeTraversal::Traverse(const wxTreeItemId& root, bool recursively)
+{
+ long cookie;
+ wxTreeItemId child = m_tree->GetFirstChild(root, cookie);
+ while ( child.IsOk() )
+ {
+ // depth first traversal
+ if ( recursively && !Traverse(child, TRUE) )
+ return FALSE;
+
+ if ( !OnVisit(child) )
+ return FALSE;
+
+ child = m_tree->GetNextChild(root, cookie);
+ }
+
+ return TRUE;
+}
+
// ----------------------------------------------------------------------------
// construction and destruction
// ----------------------------------------------------------------------------
m_textCtrl = NULL;
}
-bool wxTreeCtrl::Create(wxWindow *parent, wxWindowID id,
- const wxPoint& pos, const wxSize& size,
- long style, const wxValidator& validator,
+bool wxTreeCtrl::Create(wxWindow *parent,
+ wxWindowID id,
+ const wxPoint& pos,
+ const wxSize& size,
+ long style,
+ const wxValidator& validator,
const wxString& name)
{
Init();
- wxSystemSettings settings;
+ if ( !CreateControl(parent, id, pos, size, style, validator, name) )
+ return FALSE;
- SetName(name);
- SetValidator(validator);
+ DWORD wstyle = WS_VISIBLE | WS_CHILD | WS_TABSTOP |
+ TVS_HASLINES | TVS_SHOWSELALWAYS;
- m_windowStyle = style;
+ if ( m_windowStyle & wxTR_HAS_BUTTONS )
+ wstyle |= TVS_HASBUTTONS;
- SetParent(parent);
+ if ( m_windowStyle & wxTR_EDIT_LABELS )
+ wstyle |= TVS_EDITLABELS;
- m_windowId = (id == -1) ? NewControlId() : id;
+ if ( m_windowStyle & wxTR_LINES_AT_ROOT )
+ wstyle |= TVS_LINESATROOT;
- DWORD wstyle = WS_VISIBLE | WS_CHILD | WS_TABSTOP | TVS_HASLINES | TVS_SHOWSELALWAYS ;
+#if !defined( __GNUWIN32__ ) && !defined( __BORLANDC__ ) && !defined(wxUSE_NORLANDER_HEADERS)
+ // we emulate the multiple selection tree controls by using checkboxes: set
+ // up the image list we need for this if we do have multiple selections
+#if !defined(__VISUALC__) || (__VISUALC__ != 1010)
+ if ( m_windowStyle & wxTR_MULTIPLE )
+ wstyle |= TVS_CHECKBOXES;
+#endif
+#endif
+ // Create the tree control.
+ if ( !MSWCreateControl(WC_TREEVIEW, wstyle) )
+ return FALSE;
- bool want3D;
- WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D) ;
+ SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW));
+ SetForegroundColour(wxWindow::GetParent()->GetForegroundColour());
- // Even with extended styles, need to combine with WS_BORDER
- // for them to look right.
- if ( want3D || wxStyleHasBorder(m_windowStyle) )
+ // VZ: this is some experimental code which may be used to get the
+ // TVS_CHECKBOXES style functionality for comctl32.dll < 4.71.
+ // AFAIK, the standard DLL does about the same thing anyhow.
+#if 0
+ if ( m_windowStyle & wxTR_MULTIPLE )
{
- wstyle |= WS_BORDER;
- }
+ wxBitmap bmp;
+
+ // create the DC compatible with the current screen
+ HDC hdcMem = CreateCompatibleDC(NULL);
+
+ // create a mono bitmap of the standard size
+ int x = GetSystemMetrics(SM_CXMENUCHECK);
+ int y = GetSystemMetrics(SM_CYMENUCHECK);
+ wxImageList imagelistCheckboxes(x, y, FALSE, 2);
+ HBITMAP hbmpCheck = CreateBitmap(x, y, // bitmap size
+ 1, // # of color planes
+ 1, // # bits needed for one pixel
+ 0); // array containing colour data
+ SelectObject(hdcMem, hbmpCheck);
+
+ // then draw a check mark into it
+ RECT rect = { 0, 0, x, y };
+ if ( !::DrawFrameControl(hdcMem, &rect,
+ DFC_BUTTON,
+ DFCS_BUTTONCHECK | DFCS_CHECKED) )
+ {
+ wxLogLastError(_T("DrawFrameControl(check)"));
+ }
- if ( m_windowStyle & wxTR_HAS_BUTTONS )
- wstyle |= TVS_HASBUTTONS;
+ bmp.SetHBITMAP((WXHBITMAP)hbmpCheck);
+ imagelistCheckboxes.Add(bmp);
- if ( m_windowStyle & wxTR_EDIT_LABELS )
- wstyle |= TVS_EDITLABELS;
+ if ( !::DrawFrameControl(hdcMem, &rect,
+ DFC_BUTTON,
+ DFCS_BUTTONCHECK) )
+ {
+ wxLogLastError(_T("DrawFrameControl(uncheck)"));
+ }
- if ( m_windowStyle & wxTR_LINES_AT_ROOT )
- wstyle |= TVS_LINESATROOT;
+ bmp.SetHBITMAP((WXHBITMAP)hbmpCheck);
+ imagelistCheckboxes.Add(bmp);
- // Create the tree control.
- m_hWnd = (WXHWND)::CreateWindowEx
- (
- exStyle,
- WC_TREEVIEW,
- _T(""),
- wstyle,
- pos.x, pos.y, size.x, size.y,
- (HWND)parent->GetHWND(),
- (HMENU)m_windowId,
- wxGetInstance(),
- NULL
- );
-
- wxCHECK_MSG( m_hWnd, FALSE, _T("Failed to create tree ctrl") );
-
- if ( parent )
- parent->AddChild(this);
-
- SubclassWin(m_hWnd);
+ // clean up
+ ::DeleteDC(hdcMem);
+
+ // set the imagelist
+ SetStateImageList(&imagelistCheckboxes);
+ }
+#endif // 0
+
+ SetSize(pos.x, pos.y, size.x, size.y);
return TRUE;
}
SetAnyImageList(m_imageListState = imageList, TVSIL_STATE);
}
-size_t wxTreeCtrl::GetChildrenCount(const wxTreeItemId& item, bool recursively)
+size_t wxTreeCtrl::GetChildrenCount(const wxTreeItemId& item,
+ bool recursively) const
{
- long cookie;
+ TraverseCounter counter(this, item, recursively);
- size_t result = 0;
-
- wxArrayLong children;
- wxTreeItemId child = GetFirstChild(item, cookie);
- while ( child.IsOk() )
- {
- if ( recursively )
- {
- // recursive call
- result += GetChildrenCount(child, TRUE);
- }
-
- // add the child to the result in any case
- result++;
-
- child = GetNextChild(item, cookie);
- }
-
- return result;
+ return counter.GetCount();
}
// ----------------------------------------------------------------------------
DoSetItem(&tvItem);
}
-int wxTreeCtrl::GetItemImage(const wxTreeItemId& item) const
+int wxTreeCtrl::DoGetItemImageFromData(const wxTreeItemId& item,
+ wxTreeItemIcon which) const
{
- wxTreeViewItem tvItem(item, TVIF_IMAGE);
- DoGetItem(&tvItem);
+ wxTreeViewItem tvItem(item, TVIF_PARAM);
+ if ( !DoGetItem(&tvItem) )
+ {
+ return -1;
+ }
- return tvItem.iImage;
+ return ((wxTreeItemIndirectData *)tvItem.lParam)->GetImage(which);
}
-void wxTreeCtrl::SetItemImage(const wxTreeItemId& item, int image)
+void wxTreeCtrl::DoSetItemImageFromData(const wxTreeItemId& item,
+ int image,
+ wxTreeItemIcon which) const
{
- wxTreeViewItem tvItem(item, TVIF_IMAGE);
+ wxTreeViewItem tvItem(item, TVIF_PARAM);
+ if ( !DoGetItem(&tvItem) )
+ {
+ return;
+ }
+
+ wxTreeItemIndirectData *data = ((wxTreeItemIndirectData *)tvItem.lParam);
+
+ data->SetImage(image, which);
+
+ // make sure that we have selected images as well
+ if ( which == wxTreeItemIcon_Normal &&
+ !data->HasImage(wxTreeItemIcon_Selected) )
+ {
+ data->SetImage(image, wxTreeItemIcon_Selected);
+ }
+
+ if ( which == wxTreeItemIcon_Expanded &&
+ !data->HasImage(wxTreeItemIcon_SelectedExpanded) )
+ {
+ data->SetImage(image, wxTreeItemIcon_SelectedExpanded);
+ }
+}
+
+void wxTreeCtrl::DoSetItemImages(const wxTreeItemId& item,
+ int image,
+ int imageSel)
+{
+ wxTreeViewItem tvItem(item, TVIF_IMAGE | TVIF_SELECTEDIMAGE);
+ tvItem.iSelectedImage = imageSel;
tvItem.iImage = image;
DoSetItem(&tvItem);
}
-int wxTreeCtrl::GetItemSelectedImage(const wxTreeItemId& item) const
+int wxTreeCtrl::GetItemImage(const wxTreeItemId& item,
+ wxTreeItemIcon which) const
{
- wxTreeViewItem tvItem(item, TVIF_SELECTEDIMAGE);
+ if ( HasIndirectData(item) )
+ {
+ return DoGetItemImageFromData(item, which);
+ }
+
+ UINT mask;
+ switch ( which )
+ {
+ default:
+ wxFAIL_MSG( _T("unknown tree item image type") );
+
+ case wxTreeItemIcon_Normal:
+ mask = TVIF_IMAGE;
+ break;
+
+ case wxTreeItemIcon_Selected:
+ mask = TVIF_SELECTEDIMAGE;
+ break;
+
+ case wxTreeItemIcon_Expanded:
+ case wxTreeItemIcon_SelectedExpanded:
+ return -1;
+ }
+
+ wxTreeViewItem tvItem(item, mask);
DoGetItem(&tvItem);
- return tvItem.iSelectedImage;
+ return mask == TVIF_IMAGE ? tvItem.iImage : tvItem.iSelectedImage;
}
-void wxTreeCtrl::SetItemSelectedImage(const wxTreeItemId& item, int image)
+void wxTreeCtrl::SetItemImage(const wxTreeItemId& item, int image,
+ wxTreeItemIcon which)
{
- wxTreeViewItem tvItem(item, TVIF_SELECTEDIMAGE);
- tvItem.iSelectedImage = image;
- DoSetItem(&tvItem);
+ int imageNormal, imageSel;
+ switch ( which )
+ {
+ default:
+ wxFAIL_MSG( _T("unknown tree item image type") );
+
+ case wxTreeItemIcon_Normal:
+ imageNormal = image;
+ imageSel = GetItemSelectedImage(item);
+ break;
+
+ case wxTreeItemIcon_Selected:
+ imageNormal = GetItemImage(item);
+ imageSel = image;
+ break;
+
+ case wxTreeItemIcon_Expanded:
+ case wxTreeItemIcon_SelectedExpanded:
+ if ( !HasIndirectData(item) )
+ {
+ // we need to get the old images first, because after we create
+ // the wxTreeItemIndirectData GetItemXXXImage() will use it to
+ // get the images
+ imageNormal = GetItemImage(item);
+ imageSel = GetItemSelectedImage(item);
+
+ // if it doesn't have it yet, add it
+ wxTreeItemIndirectData *data = new
+ wxTreeItemIndirectData(this, item);
+
+ // copy the data to the new location
+ data->SetImage(imageNormal, wxTreeItemIcon_Normal);
+ data->SetImage(imageSel, wxTreeItemIcon_Selected);
+ }
+
+ DoSetItemImageFromData(item, image, which);
+
+ // reset the normal/selected images because we won't use them any
+ // more - now they're stored inside the indirect data
+ imageNormal =
+ imageSel = I_IMAGECALLBACK;
+ break;
+ }
+
+ // NB: at least in version 5.00.0518.9 of comctl32.dll we need to always
+ // change both normal and selected image - otherwise the change simply
+ // doesn't take place!
+ DoSetItemImages(item, imageNormal, imageSel);
}
wxTreeItemData *wxTreeCtrl::GetItemData(const wxTreeItemId& item) const
return NULL;
}
- return (wxTreeItemData *)tvItem.lParam;
+ if ( HasIndirectData(item) )
+ {
+ return ((wxTreeItemIndirectData *)tvItem.lParam)->GetData();
+ }
+ else
+ {
+ return (wxTreeItemData *)tvItem.lParam;
+ }
}
void wxTreeCtrl::SetItemData(const wxTreeItemId& item, wxTreeItemData *data)
{
wxTreeViewItem tvItem(item, TVIF_PARAM);
- tvItem.lParam = (LPARAM)data;
- DoSetItem(&tvItem);
+
+ if ( HasIndirectData(item) )
+ {
+ if ( DoGetItem(&tvItem) )
+ {
+ ((wxTreeItemIndirectData *)tvItem.lParam)->SetData(data);
+ }
+ else
+ {
+ wxFAIL_MSG( _T("failed to change tree items data") );
+ }
+ }
+ else
+ {
+ tvItem.lParam = (LPARAM)data;
+ DoSetItem(&tvItem);
+ }
+}
+
+void wxTreeCtrl::SetIndirectItemData(const wxTreeItemId& item,
+ wxTreeItemIndirectData *data)
+{
+ // this should never happen because it's unnecessary and will probably lead
+ // to crash too because the code elsewhere supposes that the pointer the
+ // wxTreeItemIndirectData has is a real wxItemData and not
+ // wxTreeItemIndirectData as well
+ wxASSERT_MSG( !HasIndirectData(item), _T("setting indirect data twice?") );
+
+ SetItemData(item, (wxTreeItemData *)data);
+
+ m_itemsWithIndirectData.Add(item);
+}
+
+bool wxTreeCtrl::HasIndirectData(const wxTreeItemId& item) const
+{
+ return m_itemsWithIndirectData.Index(item) != wxNOT_FOUND;
}
void wxTreeCtrl::SetItemHasChildren(const wxTreeItemId& item, bool has)
wxTreeItemId wxTreeCtrl::GetSelection() const
{
+ wxCHECK_MSG( !(m_windowStyle & wxTR_MULTIPLE), (WXHTREEITEM)0,
+ _T("this only works with single selection controls") );
+
return wxTreeItemId((WXHTREEITEM) TreeView_GetSelection(GetHwnd()));
}
return wxTreeItemId((WXHTREEITEM) TreeView_GetPrevVisible(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item));
}
+// ----------------------------------------------------------------------------
+// multiple selections emulation
+// ----------------------------------------------------------------------------
+
+bool wxTreeCtrl::IsItemChecked(const wxTreeItemId& item) const
+{
+ // receive the desired information.
+ wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_STATEIMAGEMASK);
+ DoGetItem(&tvItem);
+
+ // state image indices are 1 based
+ return ((tvItem.state >> 12) - 1) == 1;
+}
+
+void wxTreeCtrl::SetItemCheck(const wxTreeItemId& item, bool check)
+{
+ // receive the desired information.
+ wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_STATEIMAGEMASK);
+
+ // state images are one-based
+ tvItem.state = (check ? 2 : 1) << 12;
+
+ DoSetItem(&tvItem);
+}
+
+size_t wxTreeCtrl::GetSelections(wxArrayTreeItemIds& selections) const
+{
+ TraverseSelections selector(this, selections);
+
+ return selections.GetCount();
+}
+
// ----------------------------------------------------------------------------
// Usual operations
// ----------------------------------------------------------------------------
tvIns.hParent = (HTREEITEM) (WXHTREEITEM)parent;
tvIns.hInsertAfter = (HTREEITEM) (WXHTREEITEM) hInsertAfter;
- // This is how we insert the item as the first child: supply a NULL hInsertAfter
- if (tvIns.hInsertAfter == (HTREEITEM) 0)
+ // this is how we insert the item as the first child: supply a NULL
+ // hInsertAfter
+ if ( !tvIns.hInsertAfter )
{
tvIns.hInsertAfter = TVI_FIRST;
}
void wxTreeCtrl::ExpandItem(const wxTreeItemId& item, int action)
{
- DoExpand(item, action);
+ DoExpand(item, action);
}
void wxTreeCtrl::Unselect()
{
+ wxASSERT_MSG( !(m_windowStyle & wxTR_MULTIPLE), _T("doesn't make sense") );
+
+ // just remove the selection
SelectItem(wxTreeItemId((WXHTREEITEM) 0));
}
-void wxTreeCtrl::SelectItem(const wxTreeItemId& item)
+void wxTreeCtrl::UnselectAll()
{
- // inspite of the docs (MSDN Jan 99 edition), we don't seem to receive
- // the notification from the control (i.e. TVN_SELCHANG{ED|ING}), so
- // send them ourselves
-
- wxTreeEvent event(wxEVT_NULL, m_windowId);
- event.m_item = item;
- event.SetEventObject(this);
-
- event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGING);
- if ( !GetEventHandler()->ProcessEvent(event) || event.IsAllowed() )
+ if ( m_windowStyle & wxTR_MULTIPLE )
{
- if ( !TreeView_SelectItem(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item) )
+ wxArrayTreeItemIds selections;
+ size_t count = GetSelections(selections);
+ for ( size_t n = 0; n < count; n++ )
{
- wxLogLastError("TreeView_SelectItem");
+ SetItemCheck(selections[n], FALSE);
}
- else
+ }
+ else
+ {
+ // just remove the selection
+ Unselect();
+ }
+}
+
+void wxTreeCtrl::SelectItem(const wxTreeItemId& item)
+{
+ if ( m_windowStyle & wxTR_MULTIPLE )
+ {
+ // selecting the item means checking it
+ SetItemCheck(item);
+ }
+ else
+ {
+ // inspite of the docs (MSDN Jan 99 edition), we don't seem to receive
+ // the notification from the control (i.e. TVN_SELCHANG{ED|ING}), so
+ // send them ourselves
+
+ wxTreeEvent event(wxEVT_NULL, m_windowId);
+ event.m_item = item;
+ event.SetEventObject(this);
+
+ event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGING);
+ if ( !GetEventHandler()->ProcessEvent(event) || event.IsAllowed() )
{
- event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGED);
- (void)GetEventHandler()->ProcessEvent(event);
+ if ( !TreeView_SelectItem(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item) )
+ {
+ wxLogLastError("TreeView_SelectItem");
+ }
+ else
+ {
+ event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGED);
+ (void)GetEventHandler()->ProcessEvent(event);
+ }
}
+ //else: program vetoed the change
}
- //else: program vetoed the change
}
void wxTreeCtrl::EnsureVisible(const wxTreeItemId& item)
HWND hWnd = (HWND) TreeView_EditLabel(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item);
- wxCHECK_MSG( hWnd, NULL, _T("Can't edit tree ctrl label") );
+ // this is not an error - the TVN_BEGINLABELEDIT handler might have
+ // returned FALSE
+ if ( !hWnd )
+ {
+ return NULL;
+ }
DeleteTextCtrl();
TV_DISPINFO *info = (TV_DISPINFO *)lParam;
event.m_item = (WXHTREEITEM) info->item.hItem;
+ event.m_label = info->item.pszText;
break;
}
eventType = wxEVT_COMMAND_TREE_END_LABEL_EDIT;
TV_DISPINFO *info = (TV_DISPINFO *)lParam;
- event.m_item = (WXHTREEITEM) info->item.hItem;
+ event.m_item = (WXHTREEITEM)info->item.hItem;
+ event.m_label = info->item.pszText;
break;
}
bool processed = GetEventHandler()->ProcessEvent(event);
// post processing
- if ( hdr->code == TVN_DELETEITEM )
+ switch ( hdr->code )
{
- // NB: we might process this message using wxWindows event tables, but
- // due to overhead of wxWin event system we prefer to do it here
- // (otherwise deleting a tree with many items is just too slow)
- NM_TREEVIEW* tv = (NM_TREEVIEW *)lParam;
- wxTreeItemData *data = (wxTreeItemData *)tv->itemOld.lParam;
- delete data; // may be NULL, ok
- processed = TRUE; // Make sure we don't get called twice
- }
+ case TVN_DELETEITEM:
+ {
+ // NB: we might process this message using wxWindows event
+ // tables, but due to overhead of wxWin event system we
+ // prefer to do it here ourself (otherwise deleting a tree
+ // with many items is just too slow)
+ NM_TREEVIEW* tv = (NM_TREEVIEW *)lParam;
+
+ wxTreeItemId item = event.m_item;
+ if ( HasIndirectData(item) )
+ {
+ wxTreeItemIndirectData *data = (wxTreeItemIndirectData *)
+ tv->itemOld.lParam;
+ delete data; // can't be NULL here
+
+ m_itemsWithIndirectData.Remove(item);
+ }
+ else
+ {
+ wxTreeItemData *data = (wxTreeItemData *)tv->itemOld.lParam;
+ delete data; // may be NULL, ok
+ }
+
+ processed = TRUE; // Make sure we don't get called twice
+ }
+ break;
+
+ case TVN_BEGINLABELEDIT:
+ // return TRUE to cancel label editing
+ *result = !event.IsAllowed();
+ break;
- *result = !event.IsAllowed();
+ case TVN_ENDLABELEDIT:
+ // return TRUE to set the label to the new string
+ *result = event.IsAllowed();
+
+ // ensure that we don't have the text ctrl which is going to be
+ // deleted any more
+ DeleteTextCtrl();
+ break;
+
+ case TVN_SELCHANGING:
+ case TVN_ITEMEXPANDING:
+ // return TRUE to prevent the action from happening
+ *result = !event.IsAllowed();
+ break;
+
+ case TVN_GETDISPINFO:
+ // NB: so far the user can't set the image himself anyhow, so do it
+ // anyway - but this may change later
+ if ( /* !processed && */ 1 )
+ {
+ wxTreeItemId item = event.m_item;
+ TV_DISPINFO *info = (TV_DISPINFO *)lParam;
+ if ( info->item.mask & TVIF_IMAGE )
+ {
+ info->item.iImage =
+ DoGetItemImageFromData
+ (
+ item,
+ IsExpanded(item) ? wxTreeItemIcon_Expanded
+ : wxTreeItemIcon_Normal
+ );
+ }
+ if ( info->item.mask & TVIF_SELECTEDIMAGE )
+ {
+ info->item.iSelectedImage =
+ DoGetItemImageFromData
+ (
+ item,
+ IsExpanded(item) ? wxTreeItemIcon_SelectedExpanded
+ : wxTreeItemIcon_Selected
+ );
+ }
+ }
+ break;
+
+ //default:
+ // for the other messages the return value is ignored and there is
+ // nothing special to do
+ }
return processed;
}
projects / wxWidgets.git / blobdiff