X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/2996bcde9c1b96e2b8659a6eaf7201b56085abbb..404b319a85dadd7decf7a5a5331020520031a41c:/src/msw/treectrl.cpp?ds=sidebyside diff --git a/src/msw/treectrl.cpp b/src/msw/treectrl.cpp index 913713c566..0ac6f626c0 100644 --- a/src/msw/treectrl.cpp +++ b/src/msw/treectrl.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: treectrl.cpp +// Name: src/msw/treectrl.cpp // Purpose: wxTreeCtrl // Author: Julian Smart // Modified by: Vadim Zeitlin to be less MSW-specific on 10.10.98 @@ -16,9 +16,6 @@ // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ - #pragma implementation "treectrl.h" -#endif // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -27,1125 +24,3229 @@ #pragma hdrstop #endif -#include "wx/window.h" -#include "wx/msw/private.h" +#if wxUSE_TREECTRL -// Mingw32 is a bit mental even though this is done in winundef -#ifdef GetFirstChild - #undef GetFirstChild -#endif +#include "wx/treectrl.h" -#ifdef GetNextSibling - #undef GetNextSibling +#ifndef WX_PRECOMP + #include "wx/msw/wrapcctl.h" // include "properly" + #include "wx/msw/missing.h" + #include "wx/dynarray.h" + #include "wx/log.h" + #include "wx/app.h" + #include "wx/settings.h" #endif -#if defined(__WIN95__) +#include "wx/dynlib.h" +#include "wx/msw/private.h" -#include "wx/log.h" -#include "wx/dynarray.h" #include "wx/imaglist.h" -#include "wx/treectrl.h" +#include "wx/msw/dragimag.h" +#include "wx/msw/uxtheme.h" -#ifdef __GNUWIN32__ -#ifndef wxUSE_NORLANDER_HEADERS -#include "wx/msw/gnuwin32/extra.h" -#endif -#endif +// macros to hide the cast ugliness +// -------------------------------- -#if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__) || defined(wxUSE_NORLANDER_HEADERS) - #include -#endif +// get HTREEITEM from wxTreeItemId +#define HITEM(item) ((HTREEITEM)(((item).m_pItem))) + + +// older SDKs are missing these +#ifndef TVN_ITEMCHANGINGA + +#define TVN_ITEMCHANGINGA (TVN_FIRST-16) +#define TVN_ITEMCHANGINGW (TVN_FIRST-17) + +typedef struct tagNMTVITEMCHANGE +{ + NMHDR hdr; + UINT uChanged; + HTREEITEM hItem; + UINT uStateNew; + UINT uStateOld; + LPARAM lParam; +} NMTVITEMCHANGE; -// Bug in headers, sometimes -#ifndef TVIS_FOCUSED - #define TVIS_FOCUSED 0x0001 #endif -// ---------------------------------------------------------------------------- -// private classes -// ---------------------------------------------------------------------------- -// a convenient wrapper around TV_ITEM struct which adds a ctor -struct wxTreeViewItem : public TV_ITEM +// this helper class is used on vista systems for preventing unwanted +// item state changes in the vista tree control. It is only effective in +// multi-select mode on vista systems. + +// The vista tree control includes some new code that originally broke the +// multi-selection tree, causing seemingly spurious item selection state changes +// during Shift or Ctrl-click item selection. (To witness the original broken +// behaviour, simply make IsLocked() below always return false). This problem was +// solved by using the following class to 'unlock' an item's selection state. + +class TreeItemUnlocker { - wxTreeViewItem(const wxTreeItemId& item, // the item handle - UINT mask_, // fields which are valid - UINT stateMask_ = 0) // for TVIF_STATE only +public: + // unlock a single item + TreeItemUnlocker(HTREEITEM item) { - // hItem member is always valid - mask = mask_ | TVIF_HANDLE; - stateMask = stateMask_; - hItem = (HTREEITEM) (WXHTREEITEM) item; + m_oldUnlockedItem = ms_unlockedItem; + ms_unlockedItem = item; } -}; -// 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) + // unlock all items, don't use unless absolutely necessary + TreeItemUnlocker() { - m_tree = tree; + m_oldUnlockedItem = ms_unlockedItem; + ms_unlockedItem = (HTREEITEM)-1; } - // 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); + // lock everything back + ~TreeItemUnlocker() { ms_unlockedItem = m_oldUnlockedItem; } - // 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; } + // check if the item state is currently locked + static bool IsLocked(HTREEITEM item) + { return ms_unlockedItem != (HTREEITEM)-1 && item != ms_unlockedItem; } private: - bool Traverse(const wxTreeItemId& root, bool recursively); + static HTREEITEM ms_unlockedItem; + HTREEITEM m_oldUnlockedItem; - const wxTreeCtrl *m_tree; + wxDECLARE_NO_COPY_CLASS(TreeItemUnlocker); }; -// ---------------------------------------------------------------------------- -// macros -// ---------------------------------------------------------------------------- +HTREEITEM TreeItemUnlocker::ms_unlockedItem = NULL; -#if !USE_SHARED_LIBRARY - IMPLEMENT_DYNAMIC_CLASS(wxTreeCtrl, wxControl) -#endif +// another helper class: set the variable to true during its lifetime and reset +// it to false when it is destroyed +// +// it is currently always used with wxTreeCtrl::m_changingSelection +class TempSetter +{ +public: + TempSetter(bool& var) : m_var(var) + { + wxASSERT_MSG( !m_var, "variable shouldn't be already set" ); + m_var = true; + } + + ~TempSetter() + { + m_var = false; + } + +private: + bool& m_var; + + wxDECLARE_NO_COPY_CLASS(TempSetter); +}; // ---------------------------------------------------------------------------- -// variables +// private functions // ---------------------------------------------------------------------------- -// handy table for sending events -static const wxEventType g_events[2][2] = +namespace { - { wxEVT_COMMAND_TREE_ITEM_COLLAPSED, wxEVT_COMMAND_TREE_ITEM_COLLAPSING }, - { wxEVT_COMMAND_TREE_ITEM_EXPANDED, wxEVT_COMMAND_TREE_ITEM_EXPANDING } + +// Work around a problem with TreeView_GetItemRect() when using MinGW/Cygwin: +// it results in warnings about breaking strict aliasing rules because HITEM is +// passed via a RECT pointer, so use a union to avoid them and define our own +// version of the standard macro using it. +union TVGetItemRectParam +{ + RECT rect; + HTREEITEM hItem; }; -// ============================================================================ -// implementation -// ============================================================================ +inline bool +wxTreeView_GetItemRect(HWND hwnd, + HTREEITEM hItem, + TVGetItemRectParam& param, + BOOL fItemRect) +{ + param.hItem = hItem; + return ::SendMessage(hwnd, TVM_GETITEMRECT, fItemRect, + (LPARAM)¶m) == TRUE; +} -// ---------------------------------------------------------------------------- -// tree traversal -// ---------------------------------------------------------------------------- +} // anonymous namespace -bool wxTreeTraversal::DoTraverse(const wxTreeItemId& root, bool recursively) +// wrappers for TreeView_GetItem/TreeView_SetItem +static bool IsItemSelected(HWND hwndTV, HTREEITEM hItem) { - if ( !OnVisit(root) ) - return FALSE; + TV_ITEM tvi; + tvi.mask = TVIF_STATE | TVIF_HANDLE; + tvi.stateMask = TVIS_SELECTED; + tvi.hItem = hItem; - return Traverse(root, recursively); + TreeItemUnlocker unlocker(hItem); + + if ( !TreeView_GetItem(hwndTV, &tvi) ) + { + wxLogLastError(wxT("TreeView_GetItem")); + } + + return (tvi.state & TVIS_SELECTED) != 0; } -bool wxTreeTraversal::Traverse(const wxTreeItemId& root, bool recursively) +static bool SelectItem(HWND hwndTV, HTREEITEM hItem, bool select = true) { - long cookie; - wxTreeItemId child = m_tree->GetFirstChild(root, cookie); - while ( child.IsOk() ) - { - // depth first traversal - if ( recursively && !Traverse(child, TRUE) ) - return FALSE; + TV_ITEM tvi; + tvi.mask = TVIF_STATE | TVIF_HANDLE; + tvi.stateMask = TVIS_SELECTED; + tvi.state = select ? TVIS_SELECTED : 0; + tvi.hItem = hItem; - if ( !OnVisit(child) ) - return FALSE; + TreeItemUnlocker unlocker(hItem); - child = m_tree->GetNextChild(root, cookie); + if ( TreeView_SetItem(hwndTV, &tvi) == -1 ) + { + wxLogLastError(wxT("TreeView_SetItem")); + return false; } - return TRUE; + return true; } -// ---------------------------------------------------------------------------- -// construction and destruction -// ---------------------------------------------------------------------------- - -void wxTreeCtrl::Init() +static inline void UnselectItem(HWND hwndTV, HTREEITEM htItem) { - m_imageListNormal = NULL; - m_imageListState = NULL; - m_textCtrl = NULL; + SelectItem(hwndTV, htItem, false); } -bool wxTreeCtrl::Create(wxWindow *parent, - wxWindowID id, - const wxPoint& pos, - const wxSize& size, - long style, - const wxValidator& validator, - const wxString& name) +static inline void ToggleItemSelection(HWND hwndTV, HTREEITEM htItem) { - Init(); - - if ( !CreateControl(parent, id, pos, size, style, validator, name) ) - return FALSE; + SelectItem(hwndTV, htItem, !IsItemSelected(hwndTV, htItem)); +} - DWORD wstyle = WS_VISIBLE | WS_CHILD | WS_TABSTOP | - TVS_HASLINES | TVS_SHOWSELALWAYS; +// helper function which selects all items in a range and, optionally, +// deselects all the other ones +// +// returns true if the selection changed at all or false if nothing changed - if ( m_windowStyle & wxTR_HAS_BUTTONS ) - wstyle |= TVS_HASBUTTONS; +// flags for SelectRange() +enum +{ + SR_SIMULATE = 1, // don't do anything, just return true or false + SR_UNSELECT_OTHERS = 2 // deselect the items not in range +}; - if ( m_windowStyle & wxTR_EDIT_LABELS ) - wstyle |= TVS_EDITLABELS; +static bool SelectRange(HWND hwndTV, + HTREEITEM htFirst, + HTREEITEM htLast, + int flags) +{ + // find the first (or last) item and select it + bool changed = false; + bool cont = true; + HTREEITEM htItem = (HTREEITEM)TreeView_GetRoot(hwndTV); - if ( m_windowStyle & wxTR_LINES_AT_ROOT ) - wstyle |= TVS_LINESATROOT; + while ( htItem && cont ) + { + if ( (htItem == htFirst) || (htItem == htLast) ) + { + if ( !IsItemSelected(hwndTV, htItem) ) + { + if ( !(flags & SR_SIMULATE) ) + { + SelectItem(hwndTV, htItem); + } -#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 + changed = true; + } - // Create the tree control. - if ( !MSWCreateControl(WC_TREEVIEW, wstyle) ) - return FALSE; - - // the treectrl with any other background looks ugly because the items - // background is white anyhow - SetBackgroundColour(*wxWHITE); - - // 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 ) - { - 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) ) + cont = false; + } + else // not first or last { - wxLogLastError(_T("DrawFrameControl(check)")); + if ( flags & SR_UNSELECT_OTHERS ) + { + if ( IsItemSelected(hwndTV, htItem) ) + { + if ( !(flags & SR_SIMULATE) ) + UnselectItem(hwndTV, htItem); + + changed = true; + } + } } - bmp.SetHBITMAP((WXHBITMAP)hbmpCheck); - imagelistCheckboxes.Add(bmp); + htItem = (HTREEITEM)TreeView_GetNextVisible(hwndTV, htItem); + } - if ( !::DrawFrameControl(hdcMem, &rect, - DFC_BUTTON, - DFCS_BUTTONCHECK) ) + // select the items in range + cont = htFirst != htLast; + while ( htItem && cont ) + { + if ( !IsItemSelected(hwndTV, htItem) ) { - wxLogLastError(_T("DrawFrameControl(uncheck)")); + if ( !(flags & SR_SIMULATE) ) + { + SelectItem(hwndTV, htItem); + } + + changed = true; } - bmp.SetHBITMAP((WXHBITMAP)hbmpCheck); - imagelistCheckboxes.Add(bmp); + cont = (htItem != htFirst) && (htItem != htLast); + + htItem = (HTREEITEM)TreeView_GetNextVisible(hwndTV, htItem); + } + + // optionally deselect the rest + if ( flags & SR_UNSELECT_OTHERS ) + { + while ( htItem ) + { + if ( IsItemSelected(hwndTV, htItem) ) + { + if ( !(flags & SR_SIMULATE) ) + { + UnselectItem(hwndTV, htItem); + } - // clean up - ::DeleteDC(hdcMem); + changed = true; + } - // set the imagelist - SetStateImageList(&imagelistCheckboxes); + htItem = (HTREEITEM)TreeView_GetNextVisible(hwndTV, htItem); + } } -#endif // 0 - SetSize(pos.x, pos.y, size.x, size.y); + // seems to be necessary - otherwise the just selected items don't always + // appear as selected + if ( !(flags & SR_SIMULATE) ) + { + UpdateWindow(hwndTV); + } - return TRUE; + return changed; } -wxTreeCtrl::~wxTreeCtrl() +// helper function which tricks the standard control into changing the focused +// item without changing anything else (if someone knows why Microsoft doesn't +// allow to do it by just setting TVIS_FOCUSED flag, please tell me!) +// +// returns true if the focus was changed, false if the given item was already +// the focused one +static bool SetFocus(HWND hwndTV, HTREEITEM htItem) { - DeleteTextCtrl(); + // the current focus + HTREEITEM htFocus = (HTREEITEM)TreeView_GetSelection(hwndTV); - // delete user data to prevent memory leaks - DeleteAllItems(); -} + if ( htItem == htFocus ) + return false; -// ---------------------------------------------------------------------------- -// accessors -// ---------------------------------------------------------------------------- + if ( htItem ) + { + // remember the selection state of the item + bool wasSelected = IsItemSelected(hwndTV, htItem); -// simple wrappers which add error checking in debug mode + if ( htFocus && IsItemSelected(hwndTV, htFocus) ) + { + // prevent the tree from unselecting the old focus which it + // would do by default (TreeView_SelectItem unselects the + // focused item) + TreeView_SelectItem(hwndTV, 0); + SelectItem(hwndTV, htFocus); + } -bool wxTreeCtrl::DoGetItem(wxTreeViewItem* tvItem) const -{ - if ( !TreeView_GetItem(GetHwnd(), tvItem) ) - { - wxLogLastError("TreeView_GetItem"); + TreeView_SelectItem(hwndTV, htItem); - return FALSE; + if ( !wasSelected ) + { + // need to clear the selection which TreeView_SelectItem() gave + // us + UnselectItem(hwndTV, htItem); + } + //else: was selected, still selected - ok } + else // reset focus + { + bool wasFocusSelected = IsItemSelected(hwndTV, htFocus); - return TRUE; -} + // just clear the focus + TreeView_SelectItem(hwndTV, 0); -void wxTreeCtrl::DoSetItem(wxTreeViewItem* tvItem) -{ - if ( TreeView_SetItem(GetHwnd(), tvItem) == -1 ) - { - wxLogLastError("TreeView_SetItem"); + if ( wasFocusSelected ) + { + // restore the selection state + SelectItem(hwndTV, htFocus); + } } -} -size_t wxTreeCtrl::GetCount() const -{ - return (size_t)TreeView_GetCount(GetHwnd()); + return true; } -unsigned int wxTreeCtrl::GetIndent() const -{ - return TreeView_GetIndent(GetHwnd()); -} +// ---------------------------------------------------------------------------- +// private classes +// ---------------------------------------------------------------------------- -void wxTreeCtrl::SetIndent(unsigned int indent) -{ - TreeView_SetIndent(GetHwnd(), indent); -} +// a convenient wrapper around TV_ITEM struct which adds a ctor +#ifdef __VISUALC__ +#pragma warning( disable : 4097 ) // inheriting from typedef +#endif -wxImageList *wxTreeCtrl::GetImageList() const +struct wxTreeViewItem : public TV_ITEM { - return m_imageListNormal; -} + wxTreeViewItem(const wxTreeItemId& item, // the item handle + UINT mask_, // fields which are valid + UINT stateMask_ = 0) // for TVIF_STATE only + { + wxZeroMemory(*this); -wxImageList *wxTreeCtrl::GetStateImageList() const -{ - return m_imageListNormal; -} + // hItem member is always valid + mask = mask_ | TVIF_HANDLE; + stateMask = stateMask_; + hItem = HITEM(item); + } +}; -void wxTreeCtrl::SetAnyImageList(wxImageList *imageList, int which) -{ - // no error return - TreeView_SetImageList(GetHwnd(), - imageList ? imageList->GetHIMAGELIST() : 0, - which); -} +// ---------------------------------------------------------------------------- +// This class is our userdata/lParam for the TV_ITEMs stored in the treeview. +// +// We need this for a couple of reasons: +// +// 1) 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. +// +// 2) This class is also needed to hold the HITEM so that we can sort +// it correctly in the MSW sort callback. +// +// In addition it makes other workarounds such as this easier and helps +// simplify the code. +// ---------------------------------------------------------------------------- -void wxTreeCtrl::SetImageList(wxImageList *imageList) +class wxTreeItemParam { - SetAnyImageList(m_imageListNormal = imageList, TVSIL_NORMAL); -} +public: + wxTreeItemParam() + { + m_data = NULL; -void wxTreeCtrl::SetStateImageList(wxImageList *imageList) -{ - SetAnyImageList(m_imageListState = imageList, TVSIL_STATE); -} + for ( size_t n = 0; n < WXSIZEOF(m_images); n++ ) + { + m_images[n] = -1; + } + } -// internal class for counting tree items + // dtor deletes the associated data as well + virtual ~wxTreeItemParam() { delete m_data; } -class TraverseCounter : public wxTreeTraversal -{ -public: - TraverseCounter(const wxTreeCtrl *tree, - const wxTreeItemId& root, - bool recursively) - : wxTreeTraversal(tree) + // 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, falling back to the other images if this one is not + // specified + int GetImage(wxTreeItemIcon which) const + { + int image = m_images[which]; + if ( image == -1 ) + { + switch ( which ) { - m_count = 0; + case wxTreeItemIcon_SelectedExpanded: + // We consider that expanded icon is more important than + // selected so test for it first. + image = m_images[wxTreeItemIcon_Expanded]; + if ( image == -1 ) + image = m_images[wxTreeItemIcon_Selected]; + if ( image != -1 ) + break; + //else: fall through - DoTraverse(root, recursively); - } + case wxTreeItemIcon_Selected: + case wxTreeItemIcon_Expanded: + image = m_images[wxTreeItemIcon_Normal]; + break; - virtual bool OnVisit(const wxTreeItemId& item) - { - m_count++; + case wxTreeItemIcon_Normal: + // no fallback + break; - return TRUE; + default: + wxFAIL_MSG( wxT("unsupported wxTreeItemIcon value") ); + } } - size_t GetCount() const { return m_count; } + return image; + } + // change the given image + void SetImage(int image, wxTreeItemIcon which) { m_images[which] = image; } -private: - size_t m_count; -}; + // get item + const wxTreeItemId& GetItem() const { return m_item; } + // set item + void SetItem(const wxTreeItemId& item) { m_item = item; } +protected: + // all the images associated with the item + int m_images[wxTreeItemIcon_Max]; -size_t wxTreeCtrl::GetChildrenCount(const wxTreeItemId& item, - bool recursively) const -{ - TraverseCounter counter(this, item, recursively); + // item for sort callbacks + wxTreeItemId m_item; - return counter.GetCount(); -} + // the real client data + wxTreeItemData *m_data; -// ---------------------------------------------------------------------------- -// Item access -// ---------------------------------------------------------------------------- + wxDECLARE_NO_COPY_CLASS(wxTreeItemParam); +}; -wxString wxTreeCtrl::GetItemText(const wxTreeItemId& item) const +// wxVirutalNode is used in place of a single root when 'hidden' root is +// specified. +class wxVirtualNode : public wxTreeViewItem { - wxChar buf[512]; // the size is arbitrary... +public: + wxVirtualNode(wxTreeItemParam *param) + : wxTreeViewItem(TVI_ROOT, 0) + { + m_param = param; + } - wxTreeViewItem tvItem(item, TVIF_TEXT); - tvItem.pszText = buf; - tvItem.cchTextMax = WXSIZEOF(buf); - if ( !DoGetItem(&tvItem) ) + ~wxVirtualNode() { - // don't return some garbage which was on stack, but an empty string - buf[0] = _T('\0'); + delete m_param; } - return wxString(buf); -} + wxTreeItemParam *GetParam() const { return m_param; } + void SetParam(wxTreeItemParam *param) { delete m_param; m_param = param; } -void wxTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text) -{ - wxTreeViewItem tvItem(item, TVIF_TEXT); - tvItem.pszText = (wxChar *)text.c_str(); // conversion is ok - DoSetItem(&tvItem); -} +private: + wxTreeItemParam *m_param; -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); -} + wxDECLARE_NO_COPY_CLASS(wxVirtualNode); +}; -int wxTreeCtrl::GetItemImage(const wxTreeItemId& item) const -{ - wxTreeViewItem tvItem(item, TVIF_IMAGE); - DoGetItem(&tvItem); +#ifdef __VISUALC__ +#pragma warning( default : 4097 ) +#endif - return tvItem.iImage; -} +// a macro to get the virtual root, returns NULL if none +#define GET_VIRTUAL_ROOT() ((wxVirtualNode *)m_pVirtualRoot) -void wxTreeCtrl::SetItemImage(const wxTreeItemId& item, int image) -{ - // 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, image, GetItemSelectedImage(item)); -} +// returns true if the item is the virtual root +#define IS_VIRTUAL_ROOT(item) (HITEM(item) == TVI_ROOT) -int wxTreeCtrl::GetItemSelectedImage(const wxTreeItemId& item) const +// a class which encapsulates the tree traversal logic: it vists all (unless +// OnVisit() returns false) items under the given one +class wxTreeTraversal { - wxTreeViewItem tvItem(item, TVIF_SELECTEDIMAGE); - DoGetItem(&tvItem); +public: + wxTreeTraversal(const wxTreeCtrl *tree) + { + m_tree = tree; + } - return tvItem.iSelectedImage; -} + // give it a virtual dtor: not really needed as the class is never used + // polymorphically and not even allocated on heap at all, but this is safer + // (in case it ever is) and silences the compiler warnings for now + virtual ~wxTreeTraversal() { } -void wxTreeCtrl::SetItemSelectedImage(const wxTreeItemId& item, int image) -{ - // 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, GetItemImage(item), image); -} + // 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); -wxTreeItemData *wxTreeCtrl::GetItemData(const wxTreeItemId& item) const + // 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; + + wxDECLARE_NO_COPY_CLASS(wxTreeTraversal); +}; + +// internal class for getting the selected items +class TraverseSelections : public wxTreeTraversal { - wxTreeViewItem tvItem(item, TVIF_PARAM); - if ( !DoGetItem(&tvItem) ) +public: + TraverseSelections(const wxTreeCtrl *tree, + wxArrayTreeItemIds& selections) + : wxTreeTraversal(tree), m_selections(selections) + { + m_selections.Empty(); + + if (tree->GetCount() > 0) + DoTraverse(tree->GetRootItem()); + } + + virtual bool OnVisit(const wxTreeItemId& item) { - return NULL; + const wxTreeCtrl * const tree = GetTree(); + + // can't visit a virtual node. + if ( (tree->GetRootItem() == item) && tree->HasFlag(wxTR_HIDE_ROOT) ) + { + return true; + } + + if ( ::IsItemSelected(GetHwndOf(tree), HITEM(item)) ) + { + m_selections.Add(item); + } + + return true; } - return (wxTreeItemData *)tvItem.lParam; -} + size_t GetCount() const { return m_selections.GetCount(); } -void wxTreeCtrl::SetItemData(const wxTreeItemId& item, wxTreeItemData *data) -{ - wxTreeViewItem tvItem(item, TVIF_PARAM); - tvItem.lParam = (LPARAM)data; - DoSetItem(&tvItem); -} +private: + wxArrayTreeItemIds& m_selections; -void wxTreeCtrl::SetItemHasChildren(const wxTreeItemId& item, bool has) -{ - wxTreeViewItem tvItem(item, TVIF_CHILDREN); - tvItem.cChildren = (int)has; - DoSetItem(&tvItem); -} + wxDECLARE_NO_COPY_CLASS(TraverseSelections); +}; -void wxTreeCtrl::SetItemBold(const wxTreeItemId& item, bool bold) +// internal class for counting tree items +class TraverseCounter : public wxTreeTraversal { - wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_BOLD); - tvItem.state = bold ? TVIS_BOLD : 0; - DoSetItem(&tvItem); -} +public: + TraverseCounter(const wxTreeCtrl *tree, + const wxTreeItemId& root, + bool recursively) + : wxTreeTraversal(tree) + { + m_count = 0; -void wxTreeCtrl::SetItemDropHighlight(const wxTreeItemId& item, bool highlight) -{ - wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_DROPHILITED); - tvItem.state = highlight ? TVIS_DROPHILITED : 0; - DoSetItem(&tvItem); -} + DoTraverse(root, recursively); + } + + virtual bool OnVisit(const wxTreeItemId& WXUNUSED(item)) + { + m_count++; + + return true; + } + + size_t GetCount() const { return m_count; } + +private: + size_t m_count; + + wxDECLARE_NO_COPY_CLASS(TraverseCounter); +}; // ---------------------------------------------------------------------------- -// Item status +// wxWin macros // ---------------------------------------------------------------------------- -bool wxTreeCtrl::IsVisible(const wxTreeItemId& item) const -{ - // Bug in Gnu-Win32 headers, so don't use the macro TreeView_GetItemRect - RECT rect; - return SendMessage(GetHwnd(), TVM_GETITEMRECT, FALSE, (LPARAM)&rect) != 0; +// ---------------------------------------------------------------------------- +// constants +// ---------------------------------------------------------------------------- -} +// indices in gs_expandEvents table below +enum +{ + IDX_COLLAPSE, + IDX_EXPAND, + IDX_WHAT_MAX +}; -bool wxTreeCtrl::ItemHasChildren(const wxTreeItemId& item) const +enum { - wxTreeViewItem tvItem(item, TVIF_CHILDREN); - DoGetItem(&tvItem); + IDX_DONE, + IDX_DOING, + IDX_HOW_MAX +}; - return tvItem.cChildren != 0; -} +// handy table for sending events - it has to be initialized during run-time +// now so can't be const any more +static /* const */ wxEventType gs_expandEvents[IDX_WHAT_MAX][IDX_HOW_MAX]; -bool wxTreeCtrl::IsExpanded(const wxTreeItemId& item) const +/* + but logically it's a const table with the following entries: += { - // probably not a good idea to put it here - //wxASSERT( ItemHasChildren(item) ); + { wxEVT_COMMAND_TREE_ITEM_COLLAPSED, wxEVT_COMMAND_TREE_ITEM_COLLAPSING }, + { wxEVT_COMMAND_TREE_ITEM_EXPANDED, wxEVT_COMMAND_TREE_ITEM_EXPANDING } +}; +*/ - wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_EXPANDED); - DoGetItem(&tvItem); +// ============================================================================ +// implementation +// ============================================================================ - return (tvItem.state & TVIS_EXPANDED) != 0; -} +// ---------------------------------------------------------------------------- +// tree traversal +// ---------------------------------------------------------------------------- -bool wxTreeCtrl::IsSelected(const wxTreeItemId& item) const +bool wxTreeTraversal::DoTraverse(const wxTreeItemId& root, bool recursively) { - wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_SELECTED); - DoGetItem(&tvItem); + if ( !OnVisit(root) ) + return false; - return (tvItem.state & TVIS_SELECTED) != 0; + return Traverse(root, recursively); } -bool wxTreeCtrl::IsBold(const wxTreeItemId& item) const +bool wxTreeTraversal::Traverse(const wxTreeItemId& root, bool recursively) { - wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_BOLD); - DoGetItem(&tvItem); + wxTreeItemIdValue cookie; + wxTreeItemId child = m_tree->GetFirstChild(root, cookie); + while ( child.IsOk() ) + { + // depth first traversal + if ( recursively && !Traverse(child, true) ) + return false; - return (tvItem.state & TVIS_BOLD) != 0; + if ( !OnVisit(child) ) + return false; + + child = m_tree->GetNextChild(root, cookie); + } + + return true; } // ---------------------------------------------------------------------------- -// navigation +// construction and destruction // ---------------------------------------------------------------------------- -wxTreeItemId wxTreeCtrl::GetRootItem() const +void wxTreeCtrl::Init() { - return wxTreeItemId((WXHTREEITEM) TreeView_GetRoot(GetHwnd())); + m_textCtrl = NULL; + m_hasAnyAttr = false; +#if wxUSE_DRAGIMAGE + m_dragImage = NULL; +#endif + m_pVirtualRoot = NULL; + m_dragStarted = false; + m_focusLost = true; + m_changingSelection = false; + m_triggerStateImageClick = false; + m_mouseUpDeselect = false; + + // 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 + gs_expandEvents[IDX_COLLAPSE][IDX_DONE] = wxEVT_COMMAND_TREE_ITEM_COLLAPSED; + gs_expandEvents[IDX_COLLAPSE][IDX_DOING] = wxEVT_COMMAND_TREE_ITEM_COLLAPSING; + gs_expandEvents[IDX_EXPAND][IDX_DONE] = wxEVT_COMMAND_TREE_ITEM_EXPANDED; + gs_expandEvents[IDX_EXPAND][IDX_DOING] = wxEVT_COMMAND_TREE_ITEM_EXPANDING; } -wxTreeItemId wxTreeCtrl::GetSelection() const +bool wxTreeCtrl::Create(wxWindow *parent, + wxWindowID id, + const wxPoint& pos, + const wxSize& size, + long style, + const wxValidator& validator, + const wxString& name) { - wxCHECK_MSG( !(m_windowStyle & wxTR_MULTIPLE), (WXHTREEITEM)0, - _T("this only works with single selection controls") ); + Init(); + + if ( (style & wxBORDER_MASK) == wxBORDER_DEFAULT ) + style |= wxBORDER_SUNKEN; + + if ( !CreateControl(parent, id, pos, size, style, validator, name) ) + return false; - return wxTreeItemId((WXHTREEITEM) TreeView_GetSelection(GetHwnd())); + WXDWORD exStyle = 0; + DWORD wstyle = MSWGetStyle(m_windowStyle, & exStyle); + wstyle |= WS_TABSTOP | TVS_SHOWSELALWAYS; + + if ( !(m_windowStyle & wxTR_NO_LINES) ) + wstyle |= TVS_HASLINES; + if ( m_windowStyle & wxTR_HAS_BUTTONS ) + wstyle |= TVS_HASBUTTONS; + + if ( m_windowStyle & wxTR_EDIT_LABELS ) + wstyle |= TVS_EDITLABELS; + + if ( m_windowStyle & wxTR_LINES_AT_ROOT ) + wstyle |= TVS_LINESATROOT; + + if ( m_windowStyle & wxTR_FULL_ROW_HIGHLIGHT ) + { + if ( wxApp::GetComCtl32Version() >= 471 ) + wstyle |= TVS_FULLROWSELECT; + } + +#if !defined(__WXWINCE__) && defined(TVS_INFOTIP) + // Need so that TVN_GETINFOTIP messages will be sent + wstyle |= TVS_INFOTIP; +#endif + + // Create the tree control. + if ( !MSWCreateControl(WC_TREEVIEW, wstyle, pos, size) ) + return false; + + SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW)); + SetForegroundColour(wxWindow::GetParent()->GetForegroundColour()); + + wxSetCCUnicodeFormat(GetHwnd()); + + if ( m_windowStyle & wxTR_TWIST_BUTTONS ) + { + // Under Vista and later Explorer uses rotating ("twist") buttons + // instead of the default "+/-" ones so apply its theme to the tree + // control to implement this style. + if ( wxGetWinVersion() >= wxWinVersion_Vista ) + { + if ( wxUxThemeEngine *theme = wxUxThemeEngine::GetIfActive() ) + { + theme->SetWindowTheme(GetHwnd(), L"EXPLORER", NULL); + } + } + } + + return true; } -wxTreeItemId wxTreeCtrl::GetParent(const wxTreeItemId& item) const +wxTreeCtrl::~wxTreeCtrl() { - return wxTreeItemId((WXHTREEITEM) TreeView_GetParent(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item)); + m_isBeingDeleted = true; + + // delete any attributes + if ( m_hasAnyAttr ) + { + WX_CLEAR_HASH_MAP(wxMapTreeAttr, m_attrs); + + // prevent TVN_DELETEITEM handler from deleting the attributes again! + m_hasAnyAttr = false; + } + + DeleteTextCtrl(); + + // delete user data to prevent memory leaks + // also deletes hidden root node storage. + DeleteAllItems(); } -wxTreeItemId wxTreeCtrl::GetFirstChild(const wxTreeItemId& item, - long& _cookie) const +// ---------------------------------------------------------------------------- +// accessors +// ---------------------------------------------------------------------------- + +/* static */ wxVisualAttributes +wxTreeCtrl::GetClassDefaultAttributes(wxWindowVariant variant) { - // remember the last child returned in 'cookie' - _cookie = (long)TreeView_GetChild(GetHwnd(), (HTREEITEM) (WXHTREEITEM)item); + wxVisualAttributes attrs = GetCompositeControlsDefaultAttributes(variant); - return wxTreeItemId((WXHTREEITEM)_cookie); + // common controls have their own default font + attrs.font = wxGetCCDefaultFont(); + + return attrs; } -wxTreeItemId wxTreeCtrl::GetNextChild(const wxTreeItemId& WXUNUSED(item), - long& _cookie) const + +// simple wrappers which add error checking in debug mode + +bool wxTreeCtrl::DoGetItem(wxTreeViewItem *tvItem) const { - wxTreeItemId l = wxTreeItemId((WXHTREEITEM)TreeView_GetNextSibling(GetHwnd(), - (HTREEITEM)(WXHTREEITEM)_cookie)); - _cookie = (long)l; + wxCHECK_MSG( tvItem->hItem != TVI_ROOT, false, + wxT("can't retrieve virtual root item") ); + + if ( !TreeView_GetItem(GetHwnd(), tvItem) ) + { + wxLogLastError(wxT("TreeView_GetItem")); + + return false; + } - return l; + return true; } -wxTreeItemId wxTreeCtrl::GetLastChild(const wxTreeItemId& item) const +void wxTreeCtrl::DoSetItem(wxTreeViewItem *tvItem) { - // can this be done more efficiently? - long cookie; + TreeItemUnlocker unlocker(tvItem->hItem); - wxTreeItemId childLast, - child = GetFirstChild(item, cookie); - while ( child.IsOk() ) + if ( TreeView_SetItem(GetHwnd(), tvItem) == -1 ) { - childLast = child; - child = GetNextChild(item, cookie); + wxLogLastError(wxT("TreeView_SetItem")); } +} - return childLast; +unsigned int wxTreeCtrl::GetCount() const +{ + return (unsigned int)TreeView_GetCount(GetHwnd()); } -wxTreeItemId wxTreeCtrl::GetNextSibling(const wxTreeItemId& item) const +unsigned int wxTreeCtrl::GetIndent() const { - return wxTreeItemId((WXHTREEITEM) TreeView_GetNextSibling(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item)); + return TreeView_GetIndent(GetHwnd()); } -wxTreeItemId wxTreeCtrl::GetPrevSibling(const wxTreeItemId& item) const +void wxTreeCtrl::SetIndent(unsigned int indent) { - return wxTreeItemId((WXHTREEITEM) TreeView_GetPrevSibling(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item)); + TreeView_SetIndent(GetHwnd(), indent); } -wxTreeItemId wxTreeCtrl::GetFirstVisibleItem() const +void wxTreeCtrl::SetAnyImageList(wxImageList *imageList, int which) { - return wxTreeItemId((WXHTREEITEM) TreeView_GetFirstVisible(GetHwnd())); + // no error return + (void) TreeView_SetImageList(GetHwnd(), + imageList ? imageList->GetHIMAGELIST() : 0, + which); } -wxTreeItemId wxTreeCtrl::GetNextVisible(const wxTreeItemId& item) const +void wxTreeCtrl::SetImageList(wxImageList *imageList) { - wxASSERT_MSG( IsVisible(item), _T("The item you call GetNextVisible() " - "for must be visible itself!")); + if (m_ownsImageListNormal) + delete m_imageListNormal; - return wxTreeItemId((WXHTREEITEM) TreeView_GetNextVisible(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item)); + SetAnyImageList(m_imageListNormal = imageList, TVSIL_NORMAL); + m_ownsImageListNormal = false; } -wxTreeItemId wxTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const +void wxTreeCtrl::SetStateImageList(wxImageList *imageList) +{ + if (m_ownsImageListState) delete m_imageListState; + SetAnyImageList(m_imageListState = imageList, TVSIL_STATE); + m_ownsImageListState = false; +} + +size_t wxTreeCtrl::GetChildrenCount(const wxTreeItemId& item, + bool recursively) const { - wxASSERT_MSG( IsVisible(item), _T("The item you call GetPrevVisible() " - "for must be visible itself!")); + wxCHECK_MSG( item.IsOk(), 0u, wxT("invalid tree item") ); - return wxTreeItemId((WXHTREEITEM) TreeView_GetPrevVisible(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item)); + TraverseCounter counter(this, item, recursively); + return counter.GetCount() - 1; } // ---------------------------------------------------------------------------- -// multiple selections emulation +// control colours // ---------------------------------------------------------------------------- -bool wxTreeCtrl::IsItemChecked(const wxTreeItemId& item) const +bool wxTreeCtrl::SetBackgroundColour(const wxColour &colour) { - // receive the desired information. - wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_STATEIMAGEMASK); - DoGetItem(&tvItem); + if ( !wxWindowBase::SetBackgroundColour(colour) ) + return false; + + ::SendMessage(GetHwnd(), TVM_SETBKCOLOR, 0, colour.GetPixel()); - // state image indices are 1 based - return ((tvItem.state >> 12) - 1) == 1; + return true; } -void wxTreeCtrl::SetItemCheck(const wxTreeItemId& item, bool check) +bool wxTreeCtrl::SetForegroundColour(const wxColour &colour) { - // receive the desired information. - wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_STATEIMAGEMASK); + if ( !wxWindowBase::SetForegroundColour(colour) ) + return false; - // state images are one-based - tvItem.state = (check ? 2 : 1) << 12; + ::SendMessage(GetHwnd(), TVM_SETTEXTCOLOR, 0, colour.GetPixel()); - DoSetItem(&tvItem); + return true; } -// internal class for getting the selected +// ---------------------------------------------------------------------------- +// Item access +// ---------------------------------------------------------------------------- -class TraverseSelections : public wxTreeTraversal +bool wxTreeCtrl::IsHiddenRoot(const wxTreeItemId& item) const { -public: - TraverseSelections(const wxTreeCtrl *tree, - wxArrayTreeItemIds& selections) - : wxTreeTraversal(tree), m_selections(selections) - { - m_selections.Empty(); + return HITEM(item) == TVI_ROOT && HasFlag(wxTR_HIDE_ROOT); +} - DoTraverse(tree->GetRootItem()); - } +wxString wxTreeCtrl::GetItemText(const wxTreeItemId& item) const +{ + wxCHECK_MSG( item.IsOk(), wxEmptyString, wxT("invalid tree item") ); - virtual bool OnVisit(const wxTreeItemId& item) - { - if ( GetTree()->IsItemChecked(item) ) - { - m_selections.Add(item); - } + wxChar buf[512]; // the size is arbitrary... - return TRUE; - } + wxTreeViewItem tvItem(item, TVIF_TEXT); + tvItem.pszText = buf; + tvItem.cchTextMax = WXSIZEOF(buf); + if ( !DoGetItem(&tvItem) ) + { + // don't return some garbage which was on stack, but an empty string + buf[0] = wxT('\0'); + } -private: - wxArrayTreeItemIds& m_selections; -}; + return wxString(buf); +} -size_t wxTreeCtrl::GetSelections(wxArrayTreeItemIds& selections) const +void wxTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text) { - TraverseSelections selector(this, selections); + wxCHECK_RET( item.IsOk(), wxT("invalid tree item") ); - return selections.GetCount(); -} + if ( IS_VIRTUAL_ROOT(item) ) + return; -// ---------------------------------------------------------------------------- -// Usual operations -// ---------------------------------------------------------------------------- + wxTreeViewItem tvItem(item, TVIF_TEXT); + tvItem.pszText = wxMSW_CONV_LPTSTR(text); + DoSetItem(&tvItem); -wxTreeItemId wxTreeCtrl::DoInsertItem(const wxTreeItemId& parent, - wxTreeItemId hInsertAfter, - const wxString& text, - int image, int selectedImage, - wxTreeItemData *data) + // when setting the text of the item being edited, the text control should + // be updated to reflect the new text as well, otherwise calling + // SetItemText() in the OnBeginLabelEdit() handler doesn't have any effect + // + // don't use GetEditControl() here because m_textCtrl is not set yet + HWND hwndEdit = TreeView_GetEditControl(GetHwnd()); + if ( hwndEdit ) + { + if ( item == m_idEdited ) + { + ::SetWindowText(hwndEdit, text.t_str()); + } + } +} + +int wxTreeCtrl::GetItemImage(const wxTreeItemId& item, + wxTreeItemIcon which) const { - TV_INSERTSTRUCT tvIns; - tvIns.hParent = (HTREEITEM) (WXHTREEITEM)parent; - tvIns.hInsertAfter = (HTREEITEM) (WXHTREEITEM) hInsertAfter; + wxCHECK_MSG( item.IsOk(), -1, wxT("invalid tree item") ); - // This is how we insert the item as the first child: supply a NULL hInsertAfter - if (tvIns.hInsertAfter == (HTREEITEM) 0) + if ( IsHiddenRoot(item) ) { - tvIns.hInsertAfter = TVI_FIRST; + // no images for hidden root item + return -1; } - UINT mask = 0; - if ( !text.IsEmpty() ) + wxTreeItemParam *param = GetItemParam(item); + + return param && param->HasImage(which) ? param->GetImage(which) : -1; +} + +void wxTreeCtrl::SetItemImage(const wxTreeItemId& item, int image, + wxTreeItemIcon which) +{ + wxCHECK_RET( item.IsOk(), wxT("invalid tree item") ); + wxCHECK_RET( which >= 0 && + which < wxTreeItemIcon_Max, + wxT("invalid image index")); + + + if ( IsHiddenRoot(item) ) { - mask |= TVIF_TEXT; - tvIns.item.pszText = (wxChar *)text.c_str(); // cast is ok + // no images for hidden root item + return; } - if ( image != -1 ) - { - mask |= TVIF_IMAGE; - tvIns.item.iImage = image; + wxTreeItemParam *data = GetItemParam(item); + if ( !data ) + return; - if ( selectedImage == -1 ) - { - // take the same image for selected icon if not specified - selectedImage = image; - } - } + data->SetImage(image, which); + + RefreshItem(item); +} + +wxTreeItemParam *wxTreeCtrl::GetItemParam(const wxTreeItemId& item) const +{ + wxCHECK_MSG( item.IsOk(), NULL, wxT("invalid tree item") ); + + wxTreeViewItem tvItem(item, TVIF_PARAM); - if ( selectedImage != -1 ) + // hidden root may still have data. + if ( IS_VIRTUAL_ROOT(item) ) { - mask |= TVIF_SELECTEDIMAGE; - tvIns.item.iSelectedImage = selectedImage; + return GET_VIRTUAL_ROOT()->GetParam(); } - if ( data != NULL ) + // visible node. + if ( !DoGetItem(&tvItem) ) { - mask |= TVIF_PARAM; - tvIns.item.lParam = (LPARAM)data; + return NULL; } - tvIns.item.mask = mask; + return (wxTreeItemParam *)tvItem.lParam; +} - HTREEITEM id = (HTREEITEM) TreeView_InsertItem(GetHwnd(), &tvIns); - if ( id == 0 ) +bool wxTreeCtrl::HandleTreeEvent(wxTreeEvent& event) const +{ + if ( event.m_item.IsOk() ) { - wxLogLastError("TreeView_InsertItem"); + event.SetClientObject(GetItemData(event.m_item)); } - if ( data != NULL ) + return HandleWindowEvent(event); +} + +wxTreeItemData *wxTreeCtrl::GetItemData(const wxTreeItemId& item) const +{ + wxTreeItemParam *data = GetItemParam(item); + + return data ? data->GetData() : NULL; +} + +void wxTreeCtrl::SetItemData(const wxTreeItemId& item, wxTreeItemData *data) +{ + // first, associate this piece of data with this item + if ( data ) { - // associate the application tree item with Win32 tree item handle - data->SetId((WXHTREEITEM)id); + data->SetId(item); } - return wxTreeItemId((WXHTREEITEM)id); + wxTreeItemParam *param = GetItemParam(item); + + wxCHECK_RET( param, wxT("failed to change tree items data") ); + + param->SetData(data); } -// for compatibility only -wxTreeItemId wxTreeCtrl::InsertItem(const wxTreeItemId& parent, - const wxString& text, - int image, int selImage, - long insertAfter) +void wxTreeCtrl::SetItemHasChildren(const wxTreeItemId& item, bool has) { - return DoInsertItem(parent, (WXHTREEITEM)insertAfter, text, - image, selImage, NULL); + wxCHECK_RET( item.IsOk(), wxT("invalid tree item") ); + + if ( IS_VIRTUAL_ROOT(item) ) + return; + + wxTreeViewItem tvItem(item, TVIF_CHILDREN); + tvItem.cChildren = (int)has; + DoSetItem(&tvItem); } -wxTreeItemId wxTreeCtrl::AddRoot(const wxString& text, - int image, int selectedImage, - wxTreeItemData *data) +void wxTreeCtrl::SetItemBold(const wxTreeItemId& item, bool bold) +{ + wxCHECK_RET( item.IsOk(), wxT("invalid tree item") ); + + 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) { - return DoInsertItem(wxTreeItemId((WXHTREEITEM) 0), (WXHTREEITEM) 0, - text, image, selectedImage, data); + if ( IS_VIRTUAL_ROOT(item) ) + return; + + wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_DROPHILITED); + tvItem.state = highlight ? TVIS_DROPHILITED : 0; + DoSetItem(&tvItem); } -wxTreeItemId wxTreeCtrl::PrependItem(const wxTreeItemId& parent, - const wxString& text, - int image, int selectedImage, - wxTreeItemData *data) +void wxTreeCtrl::RefreshItem(const wxTreeItemId& item) { - return DoInsertItem(parent, (WXHTREEITEM) TVI_FIRST, - text, image, selectedImage, data); + if ( IS_VIRTUAL_ROOT(item) ) + return; + + wxRect rect; + if ( GetBoundingRect(item, rect) ) + { + RefreshRect(rect); + } } -wxTreeItemId wxTreeCtrl::InsertItem(const wxTreeItemId& parent, - const wxTreeItemId& idPrevious, - const wxString& text, - int image, int selectedImage, - wxTreeItemData *data) +wxColour wxTreeCtrl::GetItemTextColour(const wxTreeItemId& item) const { - return DoInsertItem(parent, idPrevious, text, image, selectedImage, data); + wxCHECK_MSG( item.IsOk(), wxNullColour, wxT("invalid tree item") ); + + wxMapTreeAttr::const_iterator it = m_attrs.find(item.m_pItem); + return it == m_attrs.end() ? wxNullColour : it->second->GetTextColour(); } -wxTreeItemId wxTreeCtrl::AppendItem(const wxTreeItemId& parent, - const wxString& text, - int image, int selectedImage, - wxTreeItemData *data) +wxColour wxTreeCtrl::GetItemBackgroundColour(const wxTreeItemId& item) const { - return DoInsertItem(parent, (WXHTREEITEM) TVI_LAST, - text, image, selectedImage, data); + wxCHECK_MSG( item.IsOk(), wxNullColour, wxT("invalid tree item") ); + + wxMapTreeAttr::const_iterator it = m_attrs.find(item.m_pItem); + return it == m_attrs.end() ? wxNullColour : it->second->GetBackgroundColour(); } -void wxTreeCtrl::Delete(const wxTreeItemId& item) +wxFont wxTreeCtrl::GetItemFont(const wxTreeItemId& item) const { - if ( !TreeView_DeleteItem(GetHwnd(), (HTREEITEM)(WXHTREEITEM)item) ) - { - wxLogLastError("TreeView_DeleteItem"); - } + wxCHECK_MSG( item.IsOk(), wxNullFont, wxT("invalid tree item") ); + + wxMapTreeAttr::const_iterator it = m_attrs.find(item.m_pItem); + return it == m_attrs.end() ? wxNullFont : it->second->GetFont(); } -// delete all children (but don't delete the item itself) -void wxTreeCtrl::DeleteChildren(const wxTreeItemId& item) +void wxTreeCtrl::SetItemTextColour(const wxTreeItemId& item, + const wxColour& col) { - long cookie; + wxCHECK_RET( item.IsOk(), wxT("invalid tree item") ); - wxArrayLong children; - wxTreeItemId child = GetFirstChild(item, cookie); - while ( child.IsOk() ) + wxTreeItemAttr *attr; + wxMapTreeAttr::iterator it = m_attrs.find(item.m_pItem); + if ( it == m_attrs.end() ) { - children.Add((long)(WXHTREEITEM)child); + m_hasAnyAttr = true; - child = GetNextChild(item, cookie); + m_attrs[item.m_pItem] = + attr = new wxTreeItemAttr; } - - size_t nCount = children.Count(); - for ( size_t n = 0; n < nCount; n++ ) + else { - if ( !TreeView_DeleteItem(GetHwnd(), (HTREEITEM)children[n]) ) - { - wxLogLastError("TreeView_DeleteItem"); - } + attr = it->second; } + + attr->SetTextColour(col); + + RefreshItem(item); } -void wxTreeCtrl::DeleteAllItems() +void wxTreeCtrl::SetItemBackgroundColour(const wxTreeItemId& item, + const wxColour& col) { - if ( !TreeView_DeleteAllItems(GetHwnd()) ) + wxCHECK_RET( item.IsOk(), wxT("invalid tree item") ); + + wxTreeItemAttr *attr; + wxMapTreeAttr::iterator it = m_attrs.find(item.m_pItem); + if ( it == m_attrs.end() ) { - wxLogLastError("TreeView_DeleteAllItems"); + m_hasAnyAttr = true; + + m_attrs[item.m_pItem] = + attr = new wxTreeItemAttr; + } + else // already in the hash + { + attr = it->second; } + + attr->SetBackgroundColour(col); + + RefreshItem(item); } -void wxTreeCtrl::DoExpand(const wxTreeItemId& item, int flag) +void wxTreeCtrl::SetItemFont(const wxTreeItemId& item, const wxFont& font) { - wxASSERT_MSG( flag == TVE_COLLAPSE || - flag == (TVE_COLLAPSE | TVE_COLLAPSERESET) || - flag == TVE_EXPAND || - flag == TVE_TOGGLE, - _T("Unknown flag in wxTreeCtrl::DoExpand") ); - - // 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 - // compatible behaviour and also in order to not have surprises with the - // future versions, don't rely on this and still do everything ourselves. - // To avoid that the messages be sent twice when the item is expanded for - // the first time we must clear TVIS_EXPANDEDONCE style manually. + wxCHECK_RET( item.IsOk(), wxT("invalid tree item") ); - wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_EXPANDEDONCE); - tvItem.state = 0; - DoSetItem(&tvItem); + wxTreeItemAttr *attr; + wxMapTreeAttr::iterator it = m_attrs.find(item.m_pItem); + if ( it == m_attrs.end() ) + { + m_hasAnyAttr = true; - if ( TreeView_Expand(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item, flag) != 0 ) + m_attrs[item.m_pItem] = + attr = new wxTreeItemAttr; + } + else // already in the hash { - wxTreeEvent event(wxEVT_NULL, m_windowId); - event.m_item = item; + attr = it->second; + } + + attr->SetFont(font); + + // Reset the item's text to ensure that the bounding rect will be adjusted + // for the new font. + SetItemText(item, GetItemText(item)); + + RefreshItem(item); +} + +// ---------------------------------------------------------------------------- +// Item status +// ---------------------------------------------------------------------------- - bool isExpanded = IsExpanded(item); +bool wxTreeCtrl::IsVisible(const wxTreeItemId& item) const +{ + wxCHECK_MSG( item.IsOk(), false, wxT("invalid tree item") ); - event.SetEventObject(this); + if ( item == wxTreeItemId(TVI_ROOT) ) + { + // virtual (hidden) root is never visible + return false; + } - // FIXME return value of {EXPAND|COLLAPS}ING event handler is discarded - event.SetEventType(g_events[isExpanded][TRUE]); - GetEventHandler()->ProcessEvent(event); + // Bug in Gnu-Win32 headers, so don't use the macro TreeView_GetItemRect + TVGetItemRectParam param; - event.SetEventType(g_events[isExpanded][FALSE]); - GetEventHandler()->ProcessEvent(event); + // true means to get rect for just the text, not the whole line + if ( !wxTreeView_GetItemRect(GetHwnd(), HITEM(item), param, TRUE) ) + { + // if TVM_GETITEMRECT returned false, then the item is definitely not + // visible (because its parent is not expanded) + return false; } - //else: change didn't took place, so do nothing at all + + // however if it returned true, the item might still be outside the + // currently visible part of the tree, test for it (notice that partly + // visible means visible here) + return param.rect.bottom > 0 && param.rect.top < GetClientSize().y; } -void wxTreeCtrl::Expand(const wxTreeItemId& item) +bool wxTreeCtrl::ItemHasChildren(const wxTreeItemId& item) const { - DoExpand(item, TVE_EXPAND); + wxCHECK_MSG( item.IsOk(), false, wxT("invalid tree item") ); + + if ( IS_VIRTUAL_ROOT(item) ) + { + wxTreeItemIdValue cookie; + return GetFirstChild(item, cookie).IsOk(); + } + + wxTreeViewItem tvItem(item, TVIF_CHILDREN); + DoGetItem(&tvItem); + + return tvItem.cChildren != 0; } -void wxTreeCtrl::Collapse(const wxTreeItemId& item) +bool wxTreeCtrl::IsExpanded(const wxTreeItemId& item) const { - DoExpand(item, TVE_COLLAPSE); + wxCHECK_MSG( item.IsOk(), false, wxT("invalid tree item") ); + + wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_EXPANDED); + DoGetItem(&tvItem); + + return (tvItem.state & TVIS_EXPANDED) != 0; } -void wxTreeCtrl::CollapseAndReset(const wxTreeItemId& item) +bool wxTreeCtrl::IsSelected(const wxTreeItemId& item) const { - DoExpand(item, TVE_COLLAPSE | TVE_COLLAPSERESET); + wxCHECK_MSG( item.IsOk(), false, wxT("invalid tree item") ); + + wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_SELECTED); + DoGetItem(&tvItem); + + return (tvItem.state & TVIS_SELECTED) != 0; } -void wxTreeCtrl::Toggle(const wxTreeItemId& item) +bool wxTreeCtrl::IsBold(const wxTreeItemId& item) const { - DoExpand(item, TVE_TOGGLE); + wxCHECK_MSG( item.IsOk(), false, wxT("invalid tree item") ); + + wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_BOLD); + DoGetItem(&tvItem); + + return (tvItem.state & TVIS_BOLD) != 0; } -void wxTreeCtrl::ExpandItem(const wxTreeItemId& item, int action) +// ---------------------------------------------------------------------------- +// navigation +// ---------------------------------------------------------------------------- + +wxTreeItemId wxTreeCtrl::GetRootItem() const { - DoExpand(item, action); + // Root may be real (visible) or virtual (hidden). + if ( GET_VIRTUAL_ROOT() ) + return TVI_ROOT; + + return wxTreeItemId(TreeView_GetRoot(GetHwnd())); } -void wxTreeCtrl::Unselect() +wxTreeItemId wxTreeCtrl::GetSelection() const { - wxASSERT_MSG( !(m_windowStyle & wxTR_MULTIPLE), _T("doesn't make sense") ); + wxCHECK_MSG( !HasFlag(wxTR_MULTIPLE), wxTreeItemId(), + wxT("this only works with single selection controls") ); - // just remove the selection - SelectItem(wxTreeItemId((WXHTREEITEM) 0)); + return GetFocusedItem(); } -void wxTreeCtrl::UnselectAll() +wxTreeItemId wxTreeCtrl::GetFocusedItem() const { - if ( m_windowStyle & wxTR_MULTIPLE ) - { - wxArrayTreeItemIds selections; - size_t count = GetSelections(selections); - for ( size_t n = 0; n < count; n++ ) - { - SetItemCheck(selections[n], FALSE); - } - } - else - { - // just remove the selection - Unselect(); - } + return wxTreeItemId(TreeView_GetSelection(GetHwnd())); } -void wxTreeCtrl::SelectItem(const wxTreeItemId& item) +wxTreeItemId wxTreeCtrl::GetItemParent(const wxTreeItemId& item) const { - if ( m_windowStyle & wxTR_MULTIPLE ) + wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") ); + + HTREEITEM hItem; + + if ( IS_VIRTUAL_ROOT(item) ) { - // selecting the item means checking it - SetItemCheck(item); + // no parent for the virtual root + hItem = 0; } - else + else // normal item { - // 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() ) + hItem = TreeView_GetParent(GetHwnd(), HITEM(item)); + if ( !hItem && HasFlag(wxTR_HIDE_ROOT) ) { - if ( !TreeView_SelectItem(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item) ) - { - wxLogLastError("TreeView_SelectItem"); - } - else - { - event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGED); - (void)GetEventHandler()->ProcessEvent(event); - } + // the top level items should have the virtual root as their parent + hItem = TVI_ROOT; } - //else: program vetoed the change } -} -void wxTreeCtrl::EnsureVisible(const wxTreeItemId& item) -{ - // no error return - TreeView_EnsureVisible(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item); + return wxTreeItemId(hItem); } -void wxTreeCtrl::ScrollTo(const wxTreeItemId& item) +wxTreeItemId wxTreeCtrl::GetFirstChild(const wxTreeItemId& item, + wxTreeItemIdValue& cookie) const { - if ( !TreeView_SelectSetFirstVisible(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item) ) - { - wxLogLastError("TreeView_SelectSetFirstVisible"); - } -} + wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") ); -wxTextCtrl* wxTreeCtrl::GetEditControl() const -{ - return m_textCtrl; -} + // remember the last child returned in 'cookie' + cookie = TreeView_GetChild(GetHwnd(), HITEM(item)); -void wxTreeCtrl::DeleteTextCtrl() -{ - if ( m_textCtrl ) - { - m_textCtrl->UnsubclassWin(); - m_textCtrl->SetHWND(0); - delete m_textCtrl; - m_textCtrl = NULL; - } + return wxTreeItemId(cookie); } -wxTextCtrl* wxTreeCtrl::EditLabel(const wxTreeItemId& item, - wxClassInfo* textControlClass) +wxTreeItemId wxTreeCtrl::GetNextChild(const wxTreeItemId& WXUNUSED(item), + wxTreeItemIdValue& cookie) const { - wxASSERT( textControlClass->IsKindOf(CLASSINFO(wxTextCtrl)) ); + wxTreeItemId fromCookie(cookie); - HWND hWnd = (HWND) TreeView_EditLabel(GetHwnd(), (HTREEITEM) (WXHTREEITEM) item); + HTREEITEM hitem = HITEM(fromCookie); - // this is not an error - the TVN_BEGINLABELEDIT handler might have - // returned FALSE - if ( !hWnd ) - { - return NULL; + hitem = TreeView_GetNextSibling(GetHwnd(), hitem); + + wxTreeItemId item(hitem); + + cookie = item.m_pItem; + + return item; +} + +wxTreeItemId wxTreeCtrl::GetLastChild(const wxTreeItemId& item) const +{ + wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") ); + + // can this be done more efficiently? + wxTreeItemIdValue cookie; + + wxTreeItemId childLast, + child = GetFirstChild(item, cookie); + while ( child.IsOk() ) + { + childLast = child; + child = GetNextChild(item, cookie); + } + + return childLast; +} + +wxTreeItemId wxTreeCtrl::GetNextSibling(const wxTreeItemId& item) const +{ + wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") ); + return wxTreeItemId(TreeView_GetNextSibling(GetHwnd(), HITEM(item))); +} + +wxTreeItemId wxTreeCtrl::GetPrevSibling(const wxTreeItemId& item) const +{ + wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") ); + return wxTreeItemId(TreeView_GetPrevSibling(GetHwnd(), HITEM(item))); +} + +wxTreeItemId wxTreeCtrl::GetFirstVisibleItem() const +{ + return wxTreeItemId(TreeView_GetFirstVisible(GetHwnd())); +} + +wxTreeItemId wxTreeCtrl::GetNextVisible(const wxTreeItemId& item) const +{ + wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") ); + wxASSERT_MSG( IsVisible(item), wxT("The item you call GetNextVisible() for must be visible itself!")); + + wxTreeItemId next(TreeView_GetNextVisible(GetHwnd(), HITEM(item))); + if ( next.IsOk() && !IsVisible(next) ) + { + // Win32 considers that any non-collapsed item is visible while we want + // to return only really visible items + next.Unset(); + } + + return next; +} + +wxTreeItemId wxTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const +{ + wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") ); + wxASSERT_MSG( IsVisible(item), wxT("The item you call GetPrevVisible() for must be visible itself!")); + + wxTreeItemId prev(TreeView_GetPrevVisible(GetHwnd(), HITEM(item))); + if ( prev.IsOk() && !IsVisible(prev) ) + { + // just as above, Win32 function will happily return the previous item + // in the tree for the first visible item too + prev.Unset(); + } + + return prev; +} + +// ---------------------------------------------------------------------------- +// multiple selections emulation +// ---------------------------------------------------------------------------- + +size_t wxTreeCtrl::GetSelections(wxArrayTreeItemIds& selections) const +{ + TraverseSelections selector(this, selections); + + return selector.GetCount(); +} + +// ---------------------------------------------------------------------------- +// Usual operations +// ---------------------------------------------------------------------------- + +wxTreeItemId wxTreeCtrl::DoInsertAfter(const wxTreeItemId& parent, + const wxTreeItemId& hInsertAfter, + const wxString& text, + int image, int selectedImage, + wxTreeItemData *data) +{ + wxCHECK_MSG( parent.IsOk() || !TreeView_GetRoot(GetHwnd()), + wxTreeItemId(), + wxT("can't have more than one root in the tree") ); + + TV_INSERTSTRUCT tvIns; + tvIns.hParent = HITEM(parent); + tvIns.hInsertAfter = HITEM(hInsertAfter); + + // this is how we insert the item as the first child: supply a NULL + // hInsertAfter + if ( !tvIns.hInsertAfter ) + { + tvIns.hInsertAfter = TVI_FIRST; + } + + UINT mask = 0; + if ( !text.empty() ) + { + mask |= TVIF_TEXT; + tvIns.item.pszText = wxMSW_CONV_LPTSTR(text); + } + else + { + tvIns.item.pszText = NULL; + tvIns.item.cchTextMax = 0; + } + + // create the param which will store the other item parameters + wxTreeItemParam *param = new wxTreeItemParam; + + // we return the images on demand as they depend on whether the item is + // expanded or collapsed too in our case + mask |= TVIF_IMAGE | TVIF_SELECTEDIMAGE; + tvIns.item.iImage = I_IMAGECALLBACK; + tvIns.item.iSelectedImage = I_IMAGECALLBACK; + + param->SetImage(image, wxTreeItemIcon_Normal); + param->SetImage(selectedImage, wxTreeItemIcon_Selected); + + mask |= TVIF_PARAM; + tvIns.item.lParam = (LPARAM)param; + tvIns.item.mask = mask; + + // don't use the hack below for the children of hidden root: this results + // in a crash inside comctl32.dll when we call TreeView_GetItemRect() + const bool firstChild = !IsHiddenRoot(parent) && + !TreeView_GetChild(GetHwnd(), HITEM(parent)); + + HTREEITEM id = TreeView_InsertItem(GetHwnd(), &tvIns); + if ( id == 0 ) + { + wxLogLastError(wxT("TreeView_InsertItem")); + } + + // apparently some Windows versions (2000 and XP are reported to do this) + // sometimes don't refresh the tree after adding the first child and so we + // need this to make the "[+]" appear + if ( firstChild ) + { + TVGetItemRectParam param; + + wxTreeView_GetItemRect(GetHwnd(), HITEM(parent), param, FALSE); + ::InvalidateRect(GetHwnd(), ¶m.rect, FALSE); + } + + // associate the application tree item with Win32 tree item handle + param->SetItem(id); + + // setup wxTreeItemData + if ( data != NULL ) + { + param->SetData(data); + data->SetId(id); + } + + return wxTreeItemId(id); +} + +wxTreeItemId wxTreeCtrl::AddRoot(const wxString& text, + int image, int selectedImage, + wxTreeItemData *data) +{ + if ( HasFlag(wxTR_HIDE_ROOT) ) + { + wxASSERT_MSG( !m_pVirtualRoot, wxT("tree can have only a single root") ); + + // create a virtual root item, the parent for all the others + wxTreeItemParam *param = new wxTreeItemParam; + param->SetData(data); + + m_pVirtualRoot = new wxVirtualNode(param); + + return TVI_ROOT; + } + + return DoInsertAfter(wxTreeItemId(), wxTreeItemId(), + text, image, selectedImage, data); +} + +wxTreeItemId wxTreeCtrl::DoInsertItem(const wxTreeItemId& parent, + size_t index, + const wxString& text, + int image, int selectedImage, + wxTreeItemData *data) +{ + wxTreeItemId idPrev; + if ( index == (size_t)-1 ) + { + // special value: append to the end + idPrev = TVI_LAST; + } + else // find the item from index + { + wxTreeItemIdValue cookie; + wxTreeItemId idCur = GetFirstChild(parent, cookie); + while ( index != 0 && idCur.IsOk() ) + { + index--; + + idPrev = idCur; + idCur = GetNextChild(parent, cookie); + } + + // assert, not check: if the index is invalid, we will append the item + // to the end + wxASSERT_MSG( index == 0, wxT("bad index in wxTreeCtrl::InsertItem") ); + } + + return DoInsertAfter(parent, idPrev, text, image, selectedImage, data); +} + +void wxTreeCtrl::Delete(const wxTreeItemId& item) +{ + // unlock tree selections on vista, without this the + // tree ctrl will eventually crash after item deletion + TreeItemUnlocker unlock_all; + + if ( HasFlag(wxTR_MULTIPLE) ) + { + bool selected = IsSelected(item); + wxTreeItemId next; + + if ( selected ) + { + next = TreeView_GetNextVisible(GetHwnd(), HITEM(item)); + + if ( !next.IsOk() ) + { + next = TreeView_GetPrevVisible(GetHwnd(), HITEM(item)); + } + } + + { + TempSetter set(m_changingSelection); + if ( !TreeView_DeleteItem(GetHwnd(), HITEM(item)) ) + { + wxLogLastError(wxT("TreeView_DeleteItem")); + return; + } + } + + if ( !selected ) + { + return; + } + + if ( item == m_htSelStart ) + m_htSelStart.Unset(); + + if ( item == m_htClickedItem ) + m_htClickedItem.Unset(); + + if ( next.IsOk() ) + { + wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, this, next); + + if ( IsTreeEventAllowed(changingEvent) ) + { + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, this, next); + (void)HandleTreeEvent(changedEvent); + } + else + { + DoUnselectItem(next); + ClearFocusedItem(); + } + } + } + else + { + if ( !TreeView_DeleteItem(GetHwnd(), HITEM(item)) ) + { + wxLogLastError(wxT("TreeView_DeleteItem")); + } + } +} + +// delete all children (but don't delete the item itself) +void wxTreeCtrl::DeleteChildren(const wxTreeItemId& item) +{ + // unlock tree selections on vista for the duration of this call + TreeItemUnlocker unlock_all; + + wxTreeItemIdValue cookie; + + wxArrayTreeItemIds children; + wxTreeItemId child = GetFirstChild(item, cookie); + while ( child.IsOk() ) + { + children.Add(child); + + child = GetNextChild(item, cookie); + } + + size_t nCount = children.Count(); + for ( size_t n = 0; n < nCount; n++ ) + { + Delete(children[n]); + } +} + +void wxTreeCtrl::DeleteAllItems() +{ + // unlock tree selections on vista for the duration of this call + TreeItemUnlocker unlock_all; + + // invalidate all the items we store as they're going to become invalid + m_htSelStart = + m_htClickedItem = wxTreeItemId(); + + // delete the "virtual" root item. + if ( GET_VIRTUAL_ROOT() ) + { + delete GET_VIRTUAL_ROOT(); + m_pVirtualRoot = NULL; + } + + // and all the real items + + if ( !TreeView_DeleteAllItems(GetHwnd()) ) + { + wxLogLastError(wxT("TreeView_DeleteAllItems")); + } +} + +void wxTreeCtrl::DoExpand(const wxTreeItemId& item, int flag) +{ + wxASSERT_MSG( flag == TVE_COLLAPSE || + flag == (TVE_COLLAPSE | TVE_COLLAPSERESET) || + flag == TVE_EXPAND || + flag == TVE_TOGGLE, + wxT("Unknown flag in wxTreeCtrl::DoExpand") ); + + // A hidden root can be neither expanded nor collapsed. + wxCHECK_RET( !IsHiddenRoot(item), + wxT("Can't expand/collapse hidden root node!") ); + + // 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 + // compatible behaviour and also in order to not have surprises with the + // future versions, don't rely on this and still do everything ourselves. + // To avoid that the messages be sent twice when the item is expanded for + // the first time we must clear TVIS_EXPANDEDONCE style manually. + + wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_EXPANDEDONCE); + tvItem.state = 0; + DoSetItem(&tvItem); + + if ( IsExpanded(item) ) + { + wxTreeEvent event(wxEVT_COMMAND_TREE_ITEM_COLLAPSING, + this, wxTreeItemId(item)); + + if ( !IsTreeEventAllowed(event) ) + return; + } + + if ( TreeView_Expand(GetHwnd(), HITEM(item), flag) ) + { + if ( IsExpanded(item) ) + return; + + wxTreeEvent event(wxEVT_COMMAND_TREE_ITEM_COLLAPSED, this, item); + (void)HandleTreeEvent(event); + } + //else: change didn't took place, so do nothing at all +} + +void wxTreeCtrl::Expand(const wxTreeItemId& item) +{ + DoExpand(item, TVE_EXPAND); +} + +void wxTreeCtrl::Collapse(const wxTreeItemId& item) +{ + DoExpand(item, TVE_COLLAPSE); +} + +void wxTreeCtrl::CollapseAndReset(const wxTreeItemId& item) +{ + DoExpand(item, TVE_COLLAPSE | TVE_COLLAPSERESET); +} + +void wxTreeCtrl::Toggle(const wxTreeItemId& item) +{ + DoExpand(item, TVE_TOGGLE); +} + +void wxTreeCtrl::Unselect() +{ + wxASSERT_MSG( !HasFlag(wxTR_MULTIPLE), + wxT("doesn't make sense, may be you want UnselectAll()?") ); + + // the current focus + HTREEITEM htFocus = (HTREEITEM)TreeView_GetSelection(GetHwnd()); + + if ( !htFocus ) + { + return; + } + + if ( HasFlag(wxTR_MULTIPLE) ) + { + wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, + this, wxTreeItemId()); + changingEvent.m_itemOld = htFocus; + + if ( IsTreeEventAllowed(changingEvent) ) + { + ClearFocusedItem(); + + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, + this, wxTreeItemId()); + changedEvent.m_itemOld = htFocus; + (void)HandleTreeEvent(changedEvent); + } + } + else + { + ClearFocusedItem(); + } +} + +void wxTreeCtrl::DoUnselectAll() +{ + wxArrayTreeItemIds selections; + size_t count = GetSelections(selections); + + for ( size_t n = 0; n < count; n++ ) + { + DoUnselectItem(selections[n]); + } + + m_htSelStart.Unset(); +} + +void wxTreeCtrl::UnselectAll() +{ + if ( HasFlag(wxTR_MULTIPLE) ) + { + HTREEITEM htFocus = (HTREEITEM)TreeView_GetSelection(GetHwnd()); + if ( !htFocus ) return; + + wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, this); + changingEvent.m_itemOld = htFocus; + + if ( IsTreeEventAllowed(changingEvent) ) + { + DoUnselectAll(); + + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, this); + changedEvent.m_itemOld = htFocus; + (void)HandleTreeEvent(changedEvent); + } + } + else + { + Unselect(); + } +} + +void wxTreeCtrl::DoSelectChildren(const wxTreeItemId& parent) +{ + DoUnselectAll(); + + wxTreeItemIdValue cookie; + wxTreeItemId child = GetFirstChild(parent, cookie); + while ( child.IsOk() ) + { + DoSelectItem(child, true); + child = GetNextChild(child, cookie); + } +} + +void wxTreeCtrl::SelectChildren(const wxTreeItemId& parent) +{ + wxCHECK_RET( HasFlag(wxTR_MULTIPLE), + "this only works with multiple selection controls" ); + + HTREEITEM htFocus = (HTREEITEM)TreeView_GetSelection(GetHwnd()); + + wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, this); + changingEvent.m_itemOld = htFocus; + + if ( IsTreeEventAllowed(changingEvent) ) + { + DoSelectChildren(parent); + + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, this); + changedEvent.m_itemOld = htFocus; + (void)HandleTreeEvent(changedEvent); + } +} + +void wxTreeCtrl::DoSelectItem(const wxTreeItemId& item, bool select) +{ + TempSetter set(m_changingSelection); + + ::SelectItem(GetHwnd(), HITEM(item), select); +} + +void wxTreeCtrl::SelectItem(const wxTreeItemId& item, bool select) +{ + wxCHECK_RET( !IsHiddenRoot(item), wxT("can't select hidden root item") ); + + if ( select == IsSelected(item) ) + { + // nothing to do, the item is already in the requested state + return; + } + + if ( HasFlag(wxTR_MULTIPLE) ) + { + wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, this, item); + + if ( IsTreeEventAllowed(changingEvent) ) + { + HTREEITEM htFocus = (HTREEITEM)TreeView_GetSelection(GetHwnd()); + DoSelectItem(item, select); + + if ( !htFocus ) + { + SetFocusedItem(item); + } + + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, + this, item); + (void)HandleTreeEvent(changedEvent); + } + } + else // single selection + { + wxTreeItemId itemOld, itemNew; + if ( select ) + { + itemOld = GetSelection(); + itemNew = item; + } + else // deselecting the currently selected item + { + itemOld = item; + // leave itemNew invalid + } + + // Recent versions of comctl32.dll send TVN_SELCHANG{ED,ING} events + // when we call TreeView_SelectItem() but apparently some old ones did + // not so send the events ourselves and ignore those generated by + // TreeView_SelectItem() if m_changingSelection is set. + wxTreeEvent + changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, this, itemNew); + changingEvent.SetOldItem(itemOld); + + if ( IsTreeEventAllowed(changingEvent) ) + { + TempSetter set(m_changingSelection); + + if ( !TreeView_SelectItem(GetHwnd(), HITEM(itemNew)) ) + { + wxLogLastError(wxT("TreeView_SelectItem")); + } + else // ok + { + ::SetFocus(GetHwnd(), HITEM(item)); + + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, + this, itemNew); + changedEvent.SetOldItem(itemOld); + (void)HandleTreeEvent(changedEvent); + } + } + //else: program vetoed the change + } +} + +void wxTreeCtrl::EnsureVisible(const wxTreeItemId& item) +{ + wxCHECK_RET( !IsHiddenRoot(item), wxT("can't show hidden root item") ); + + // no error return + TreeView_EnsureVisible(GetHwnd(), HITEM(item)); +} + +void wxTreeCtrl::ScrollTo(const wxTreeItemId& item) +{ + if ( !TreeView_SelectSetFirstVisible(GetHwnd(), HITEM(item)) ) + { + wxLogLastError(wxT("TreeView_SelectSetFirstVisible")); + } +} + +wxTextCtrl *wxTreeCtrl::GetEditControl() const +{ + return m_textCtrl; +} + +void wxTreeCtrl::DeleteTextCtrl() +{ + if ( m_textCtrl ) + { + // the HWND corresponding to this control is deleted by the tree + // control itself and we don't know when exactly this happens, so check + // if the window still exists before calling UnsubclassWin() + if ( !::IsWindow(GetHwndOf(m_textCtrl)) ) + { + m_textCtrl->SetHWND(0); + } + + m_textCtrl->UnsubclassWin(); + m_textCtrl->SetHWND(0); + wxDELETE(m_textCtrl); + + m_idEdited.Unset(); + } +} + +wxTextCtrl *wxTreeCtrl::EditLabel(const wxTreeItemId& item, + wxClassInfo *textControlClass) +{ + wxASSERT( textControlClass->IsKindOf(wxCLASSINFO(wxTextCtrl)) ); + + DeleteTextCtrl(); + + m_idEdited = item; + m_textCtrl = (wxTextCtrl *)textControlClass->CreateObject(); + HWND hWnd = (HWND) TreeView_EditLabel(GetHwnd(), HITEM(item)); + + // this is not an error - the TVN_BEGINLABELEDIT handler might have + // returned false + if ( !hWnd ) + { + wxDELETE(m_textCtrl); + return NULL; + } + + // textctrl is subclassed in MSWOnNotify + return m_textCtrl; +} + +// End label editing, optionally cancelling the edit +void wxTreeCtrl::DoEndEditLabel(bool discardChanges) +{ + TreeView_EndEditLabelNow(GetHwnd(), discardChanges); + + DeleteTextCtrl(); +} + +wxTreeItemId wxTreeCtrl::DoTreeHitTest(const wxPoint& point, int& flags) const +{ + TV_HITTESTINFO hitTestInfo; + hitTestInfo.pt.x = (int)point.x; + hitTestInfo.pt.y = (int)point.y; + + (void) TreeView_HitTest(GetHwnd(), &hitTestInfo); + + flags = 0; + + // avoid repetition + #define TRANSLATE_FLAG(flag) if ( hitTestInfo.flags & TVHT_##flag ) \ + flags |= wxTREE_HITTEST_##flag + + TRANSLATE_FLAG(ABOVE); + TRANSLATE_FLAG(BELOW); + TRANSLATE_FLAG(NOWHERE); + TRANSLATE_FLAG(ONITEMBUTTON); + TRANSLATE_FLAG(ONITEMICON); + TRANSLATE_FLAG(ONITEMINDENT); + TRANSLATE_FLAG(ONITEMLABEL); + TRANSLATE_FLAG(ONITEMRIGHT); + TRANSLATE_FLAG(ONITEMSTATEICON); + TRANSLATE_FLAG(TOLEFT); + TRANSLATE_FLAG(TORIGHT); + + #undef TRANSLATE_FLAG + + return wxTreeItemId(hitTestInfo.hItem); +} + +bool wxTreeCtrl::GetBoundingRect(const wxTreeItemId& item, + wxRect& rect, + bool textOnly) const +{ + // Virtual root items have no bounding rectangle + if ( IS_VIRTUAL_ROOT(item) ) + { + return false; + } + + TVGetItemRectParam param; + + if ( wxTreeView_GetItemRect(GetHwnd(), HITEM(item), param, textOnly) ) + { + rect = wxRect(wxPoint(param.rect.left, param.rect.top), + wxPoint(param.rect.right, param.rect.bottom)); + + return true; + } + else + { + // couldn't retrieve rect: for example, item isn't visible + return false; + } +} + +void wxTreeCtrl::ClearFocusedItem() +{ + TempSetter set(m_changingSelection); + + if ( !TreeView_SelectItem(GetHwnd(), 0) ) + { + wxLogLastError(wxT("TreeView_SelectItem")); + } +} + +void wxTreeCtrl::SetFocusedItem(const wxTreeItemId& item) +{ + wxCHECK_RET( item.IsOk(), wxT("invalid tree item") ); + + TempSetter set(m_changingSelection); + + ::SetFocus(GetHwnd(), HITEM(item)); +} + +void wxTreeCtrl::DoUnselectItem(const wxTreeItemId& item) +{ + TempSetter set(m_changingSelection); + + ::UnselectItem(GetHwnd(), HITEM(item)); +} + +void wxTreeCtrl::DoToggleItemSelection(const wxTreeItemId& item) +{ + TempSetter set(m_changingSelection); + + ::ToggleItemSelection(GetHwnd(), HITEM(item)); +} + +// ---------------------------------------------------------------------------- +// sorting stuff +// ---------------------------------------------------------------------------- + +// this is just a tiny namespace which is friend to wxTreeCtrl and so can use +// functions such as IsDataIndirect() +class wxTreeSortHelper +{ +public: + static int CALLBACK Compare(LPARAM data1, LPARAM data2, LPARAM tree); + +private: + static wxTreeItemId GetIdFromData(LPARAM lParam) + { + return ((wxTreeItemParam*)lParam)->GetItem(); + } +}; + +int CALLBACK wxTreeSortHelper::Compare(LPARAM pItem1, + LPARAM pItem2, + LPARAM htree) +{ + wxCHECK_MSG( pItem1 && pItem2, 0, + wxT("sorting tree without data doesn't make sense") ); + + wxTreeCtrl *tree = (wxTreeCtrl *)htree; + + return tree->OnCompareItems(GetIdFromData(pItem1), + GetIdFromData(pItem2)); +} + +void wxTreeCtrl::SortChildren(const wxTreeItemId& item) +{ + wxCHECK_RET( item.IsOk(), wxT("invalid tree item") ); + + // rely on the fact that TreeView_SortChildren does the same thing as our + // default behaviour, i.e. sorts items alphabetically and so call it + // directly if we're not in derived class (much more efficient!) + // RN: Note that if you find you're code doesn't sort as expected this + // may be why as if you don't use the DECLARE_CLASS/IMPLEMENT_CLASS + // combo for your derived wxTreeCtrl if will sort without + // OnCompareItems + if ( GetClassInfo() == wxCLASSINFO(wxTreeCtrl) ) + { + TreeView_SortChildren(GetHwnd(), HITEM(item), 0); } + else + { + TV_SORTCB tvSort; + tvSort.hParent = HITEM(item); + tvSort.lpfnCompare = wxTreeSortHelper::Compare; + tvSort.lParam = (LPARAM)this; + TreeView_SortChildrenCB(GetHwnd(), &tvSort, 0 /* reserved */); + } +} - DeleteTextCtrl(); +// ---------------------------------------------------------------------------- +// implementation +// ---------------------------------------------------------------------------- - m_textCtrl = (wxTextCtrl *)textControlClass->CreateObject(); - m_textCtrl->SetHWND((WXHWND)hWnd); - m_textCtrl->SubclassWin((WXHWND)hWnd); +bool wxTreeCtrl::MSWShouldPreProcessMessage(WXMSG* msg) +{ + if ( msg->message == WM_KEYDOWN ) + { + // Only eat VK_RETURN if not being used by the application in + // conjunction with modifiers + if ( (msg->wParam == VK_RETURN) && !wxIsAnyModifierDown() ) + { + // we need VK_RETURN to generate wxEVT_COMMAND_TREE_ITEM_ACTIVATED + return false; + } + } - return m_textCtrl; + return wxTreeCtrlBase::MSWShouldPreProcessMessage(msg); } -// End label editing, optionally cancelling the edit -void wxTreeCtrl::EndEditLabel(const wxTreeItemId& item, bool discardChanges) +bool wxTreeCtrl::MSWCommand(WXUINT cmd, WXWORD id_) { - TreeView_EndEditLabelNow(GetHwnd(), discardChanges); + const int id = (signed short)id_; + + if ( cmd == EN_UPDATE ) + { + wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, id); + event.SetEventObject( this ); + ProcessCommand(event); + } + else if ( cmd == EN_KILLFOCUS ) + { + wxCommandEvent event(wxEVT_KILL_FOCUS, id); + event.SetEventObject( this ); + ProcessCommand(event); + } + else + { + // nothing done + return false; + } + + // command processed + return true; +} + +bool wxTreeCtrl::MSWIsOnItem(unsigned flags) const +{ + unsigned mask = TVHT_ONITEM; + if ( HasFlag(wxTR_FULL_ROW_HIGHLIGHT) ) + mask |= TVHT_ONITEMINDENT | TVHT_ONITEMRIGHT; + + return (flags & mask) != 0; +} + +bool wxTreeCtrl::MSWHandleSelectionKey(unsigned vkey) +{ + const bool bCtrl = wxIsCtrlDown(); + const bool bShift = wxIsShiftDown(); + const HTREEITEM htSel = (HTREEITEM)TreeView_GetSelection(GetHwnd()); + + switch ( vkey ) + { + case VK_RETURN: + case VK_SPACE: + if ( !htSel ) + break; + + if ( vkey != VK_RETURN && bCtrl ) + { + wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, + this, htSel); + changingEvent.m_itemOld = htSel; + + if ( IsTreeEventAllowed(changingEvent) ) + { + DoToggleItemSelection(wxTreeItemId(htSel)); + + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, + this, htSel); + changedEvent.m_itemOld = htSel; + (void)HandleTreeEvent(changedEvent); + } + } + else + { + wxArrayTreeItemIds selections; + size_t count = GetSelections(selections); + + if ( count != 1 || HITEM(selections[0]) != htSel ) + { + wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, + this, htSel); + changingEvent.m_itemOld = htSel; + + if ( IsTreeEventAllowed(changingEvent) ) + { + DoUnselectAll(); + DoSelectItem(wxTreeItemId(htSel)); + + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, + this, htSel); + changedEvent.m_itemOld = htSel; + (void)HandleTreeEvent(changedEvent); + } + } + } + break; + + case VK_UP: + case VK_DOWN: + if ( !bCtrl && !bShift ) + { + wxArrayTreeItemIds selections; + wxTreeItemId next; + + if ( htSel ) + { + next = vkey == VK_UP + ? TreeView_GetPrevVisible(GetHwnd(), htSel) + : TreeView_GetNextVisible(GetHwnd(), htSel); + } + else + { + next = GetRootItem(); + + if ( IsHiddenRoot(next) ) + next = TreeView_GetChild(GetHwnd(), HITEM(next)); + } + + if ( !next.IsOk() ) + { + break; + } + + wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, + this, next); + changingEvent.m_itemOld = htSel; + + if ( IsTreeEventAllowed(changingEvent) ) + { + DoUnselectAll(); + DoSelectItem(next); + SetFocusedItem(next); + + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, + this, next); + changedEvent.m_itemOld = htSel; + (void)HandleTreeEvent(changedEvent); + } + } + else if ( htSel ) + { + wxTreeItemId next = vkey == VK_UP + ? TreeView_GetPrevVisible(GetHwnd(), htSel) + : TreeView_GetNextVisible(GetHwnd(), htSel); + + if ( !next.IsOk() ) + { + break; + } + + if ( !m_htSelStart ) + { + m_htSelStart = htSel; + } + + if ( bShift && SelectRange(GetHwnd(), HITEM(m_htSelStart), HITEM(next), + SR_UNSELECT_OTHERS | SR_SIMULATE) ) + { + wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, this, next); + changingEvent.m_itemOld = htSel; + + if ( IsTreeEventAllowed(changingEvent) ) + { + SelectRange(GetHwnd(), HITEM(m_htSelStart), HITEM(next), + SR_UNSELECT_OTHERS); + + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, this, next); + changedEvent.m_itemOld = htSel; + (void)HandleTreeEvent(changedEvent); + } + } + + SetFocusedItem(next); + } + break; + + case VK_LEFT: + if ( HasChildren(htSel) && IsExpanded(htSel) ) + { + Collapse(htSel); + } + else + { + wxTreeItemId next = GetItemParent(htSel); + + if ( next.IsOk() && !IsHiddenRoot(next) ) + { + wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, + this, next); + changingEvent.m_itemOld = htSel; + + if ( IsTreeEventAllowed(changingEvent) ) + { + DoUnselectAll(); + DoSelectItem(next); + SetFocusedItem(next); + + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, + this, next); + changedEvent.m_itemOld = htSel; + (void)HandleTreeEvent(changedEvent); + } + } + } + break; + + case VK_RIGHT: + if ( !IsVisible(htSel) ) + { + EnsureVisible(htSel); + } + + if ( !HasChildren(htSel) ) + break; + + if ( !IsExpanded(htSel) ) + { + Expand(htSel); + } + else + { + wxTreeItemId next = TreeView_GetChild(GetHwnd(), htSel); + + wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, this, next); + changingEvent.m_itemOld = htSel; + + if ( IsTreeEventAllowed(changingEvent) ) + { + DoUnselectAll(); + DoSelectItem(next); + SetFocusedItem(next); + + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, this, next); + changedEvent.m_itemOld = htSel; + (void)HandleTreeEvent(changedEvent); + } + } + break; + + case VK_HOME: + case VK_END: + { + wxTreeItemId next = GetRootItem(); + + if ( IsHiddenRoot(next) ) + { + next = TreeView_GetChild(GetHwnd(), HITEM(next)); + } + + if ( !next.IsOk() ) + break; + + if ( vkey == VK_END ) + { + for ( ;; ) + { + wxTreeItemId nextTemp = TreeView_GetNextVisible( + GetHwnd(), HITEM(next)); + + if ( !nextTemp.IsOk() ) + break; + + next = nextTemp; + } + } + + if ( htSel == HITEM(next) ) + break; + + if ( bShift ) + { + if ( !m_htSelStart ) + { + m_htSelStart = htSel; + } + + if ( SelectRange(GetHwnd(), + HITEM(m_htSelStart), HITEM(next), + SR_UNSELECT_OTHERS | SR_SIMULATE) ) + { + wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, + this, next); + changingEvent.m_itemOld = htSel; + + if ( IsTreeEventAllowed(changingEvent) ) + { + SelectRange(GetHwnd(), + HITEM(m_htSelStart), HITEM(next), + SR_UNSELECT_OTHERS); + SetFocusedItem(next); + + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, + this, next); + changedEvent.m_itemOld = htSel; + (void)HandleTreeEvent(changedEvent); + } + } + } + else // no Shift + { + wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, + this, next); + changingEvent.m_itemOld = htSel; + + if ( IsTreeEventAllowed(changingEvent) ) + { + DoUnselectAll(); + DoSelectItem(next); + SetFocusedItem(next); + + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, + this, next); + changedEvent.m_itemOld = htSel; + (void)HandleTreeEvent(changedEvent); + } + } + } + break; + + case VK_PRIOR: + case VK_NEXT: + if ( bCtrl ) + { + wxTreeItemId firstVisible = GetFirstVisibleItem(); + size_t visibleCount = TreeView_GetVisibleCount(GetHwnd()); + wxTreeItemId nextAdjacent = (vkey == VK_PRIOR) ? + TreeView_GetPrevVisible(GetHwnd(), HITEM(firstVisible)) : + TreeView_GetNextVisible(GetHwnd(), HITEM(firstVisible)); + + if ( !nextAdjacent ) + { + break; + } + + wxTreeItemId nextStart = firstVisible; + + for ( size_t n = 1; n < visibleCount; n++ ) + { + wxTreeItemId nextTemp = (vkey == VK_PRIOR) ? + TreeView_GetPrevVisible(GetHwnd(), HITEM(nextStart)) : + TreeView_GetNextVisible(GetHwnd(), HITEM(nextStart)); + + if ( nextTemp.IsOk() ) + { + nextStart = nextTemp; + } + else + { + break; + } + } + + EnsureVisible(nextStart); + + if ( vkey == VK_NEXT ) + { + wxTreeItemId nextEnd = nextStart; + + for ( size_t n = 1; n < visibleCount; n++ ) + { + wxTreeItemId nextTemp = + TreeView_GetNextVisible(GetHwnd(), HITEM(nextEnd)); + + if ( nextTemp.IsOk() ) + { + nextEnd = nextTemp; + } + else + { + break; + } + } + + EnsureVisible(nextEnd); + } + } + else // no Ctrl + { + size_t visibleCount = TreeView_GetVisibleCount(GetHwnd()); + wxTreeItemId nextAdjacent = (vkey == VK_PRIOR) ? + TreeView_GetPrevVisible(GetHwnd(), htSel) : + TreeView_GetNextVisible(GetHwnd(), htSel); + + if ( !nextAdjacent ) + { + break; + } + + wxTreeItemId next(htSel); + + for ( size_t n = 1; n < visibleCount; n++ ) + { + wxTreeItemId nextTemp = vkey == VK_PRIOR ? + TreeView_GetPrevVisible(GetHwnd(), HITEM(next)) : + TreeView_GetNextVisible(GetHwnd(), HITEM(next)); + + if ( !nextTemp.IsOk() ) + break; + + next = nextTemp; + } + + wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, + this, next); + changingEvent.m_itemOld = htSel; + + if ( IsTreeEventAllowed(changingEvent) ) + { + DoUnselectAll(); + m_htSelStart.Unset(); + DoSelectItem(next); + SetFocusedItem(next); + + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, + this, next); + changedEvent.m_itemOld = htSel; + (void)HandleTreeEvent(changedEvent); + } + } + break; + + default: + return false; + } + + return true; +} + +bool wxTreeCtrl::MSWHandleTreeKeyDownEvent(WXWPARAM wParam, WXLPARAM lParam) +{ + wxTreeEvent keyEvent(wxEVT_COMMAND_TREE_KEY_DOWN, this); + keyEvent.m_evtKey = CreateKeyEvent(wxEVT_KEY_DOWN, wParam, lParam); + + bool processed = HandleTreeEvent(keyEvent); + + // generate a separate event for Space/Return + if ( !wxIsCtrlDown() && !wxIsShiftDown() && !wxIsAltDown() && + ((wParam == VK_SPACE) || (wParam == VK_RETURN)) ) + { + const HTREEITEM htSel = (HTREEITEM)TreeView_GetSelection(GetHwnd()); + if ( htSel ) + { + wxTreeEvent activatedEvent(wxEVT_COMMAND_TREE_ITEM_ACTIVATED, + this, htSel); + (void)HandleTreeEvent(activatedEvent); + } + } + + return processed; +} + +// we hook into WndProc to process WM_MOUSEMOVE/WM_BUTTONUP messages - as we +// only do it during dragging, minimize wxWin overhead (this is important for +// WM_MOUSEMOVE as they're a lot of them) by catching Windows messages directly +// instead of passing by wxWin events +WXLRESULT +wxTreeCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) +{ + bool processed = false; + WXLRESULT rc = 0; + bool isMultiple = HasFlag(wxTR_MULTIPLE); + + if ( nMsg == WM_CONTEXTMENU ) + { + int x = GET_X_LPARAM(lParam), + y = GET_Y_LPARAM(lParam); + + // the item for which the menu should be shown + wxTreeItemId item; + + // the position where the menu should be shown in client coordinates + // (so that it can be passed directly to PopupMenu()) + wxPoint pt; + + if ( x == -1 || y == -1 ) + { + // this means that the event was generated from keyboard (e.g. with + // Shift-F10 or special Windows menu key) + // + // use the Explorer standard of putting the menu at the left edge + // of the text, in the vertical middle of the text + item = wxTreeItemId(TreeView_GetSelection(GetHwnd())); + if ( item.IsOk() ) + { + // Use the bounding rectangle of only the text part + wxRect rect; + GetBoundingRect(item, rect, true); + pt = wxPoint(rect.GetX(), rect.GetY() + rect.GetHeight() / 2); + } + } + else // event from mouse, use mouse position + { + pt = ScreenToClient(wxPoint(x, y)); + + TV_HITTESTINFO tvhti; + tvhti.pt.x = pt.x; + tvhti.pt.y = pt.y; + + if ( TreeView_HitTest(GetHwnd(), &tvhti) ) + item = wxTreeItemId(tvhti.hItem); + } + + // create the event + if ( item.IsOk() ) + { + wxTreeEvent event(wxEVT_COMMAND_TREE_ITEM_MENU, this, item); + + event.m_pointDrag = pt; + + if ( HandleTreeEvent(event) ) + processed = true; + //else: continue with generating wxEVT_CONTEXT_MENU in base class code + } + } + else if ( (nMsg >= WM_MOUSEFIRST) && (nMsg <= WM_MOUSELAST) ) + { + // we only process mouse messages here and these parameters have the + // same meaning for all of them + int x = GET_X_LPARAM(lParam), + y = GET_Y_LPARAM(lParam); + + TV_HITTESTINFO tvht; + tvht.pt.x = x; + tvht.pt.y = y; + + HTREEITEM htOldItem = TreeView_GetSelection(GetHwnd()); + HTREEITEM htItem = TreeView_HitTest(GetHwnd(), &tvht); + + switch ( nMsg ) + { + case WM_LBUTTONDOWN: + if ( !isMultiple ) + break; + + m_htClickedItem.Unset(); + + if ( !MSWIsOnItem(tvht.flags) ) + { + if ( tvht.flags & TVHT_ONITEMBUTTON ) + { + // either it's going to be handled by user code or + // we're going to use it ourselves to toggle the + // branch, in either case don't pass it to the base + // class which would generate another mouse click event + // for it even though it's already handled here + processed = true; + SetFocus(); + + if ( !HandleMouseEvent(nMsg, x, y, wParam) ) + { + if ( !IsExpanded(htItem) ) + { + Expand(htItem); + } + else + { + Collapse(htItem); + } + } + } + + m_focusLost = false; + break; + } + + processed = true; + SetFocus(); + m_htClickedItem = (WXHTREEITEM) htItem; + m_ptClick = wxPoint(x, y); + + if ( wParam & MK_CONTROL ) + { + if ( HandleMouseEvent(nMsg, x, y, wParam) ) + { + m_htClickedItem.Unset(); + break; + } + + wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, + this, htItem); + changingEvent.m_itemOld = htOldItem; + + if ( IsTreeEventAllowed(changingEvent) ) + { + // toggle selected state + DoToggleItemSelection(wxTreeItemId(htItem)); + + SetFocusedItem(wxTreeItemId(htItem)); + + // reset on any click without Shift + m_htSelStart.Unset(); + + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, + this, htItem); + changedEvent.m_itemOld = htOldItem; + (void)HandleTreeEvent(changedEvent); + } + } + else if ( wParam & MK_SHIFT ) + { + if ( HandleMouseEvent(nMsg, x, y, wParam) ) + { + m_htClickedItem.Unset(); + break; + } + + int srFlags = 0; + bool willChange = true; + + if ( !(wParam & MK_CONTROL) ) + { + srFlags |= SR_UNSELECT_OTHERS; + } + + if ( !m_htSelStart ) + { + // take the focused item + m_htSelStart = htOldItem; + } + else + { + willChange = SelectRange(GetHwnd(), HITEM(m_htSelStart), + htItem, srFlags | SR_SIMULATE); + } + + if ( willChange ) + { + wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, + this, htItem); + changingEvent.m_itemOld = htOldItem; + + if ( IsTreeEventAllowed(changingEvent) ) + { + // this selects all items between the starting one + // and the current + if ( m_htSelStart ) + { + SelectRange(GetHwnd(), HITEM(m_htSelStart), + htItem, srFlags); + } + else + { + DoSelectItem(wxTreeItemId(htItem)); + } + + SetFocusedItem(wxTreeItemId(htItem)); + + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, + this, htItem); + changedEvent.m_itemOld = htOldItem; + (void)HandleTreeEvent(changedEvent); + } + } + } + else // normal click + { + // avoid doing anything if we click on the only + // currently selected item + + wxArrayTreeItemIds selections; + size_t count = GetSelections(selections); + + if ( count == 0 || + count > 1 || + HITEM(selections[0]) != htItem ) + { + if ( HandleMouseEvent(nMsg, x, y, wParam) ) + { + m_htClickedItem.Unset(); + break; + } + + // clear the previously selected items, if the user + // clicked outside of the present selection, otherwise, + // perform the deselection on mouse-up, this allows + // multiple drag and drop to work. + if ( !IsItemSelected(GetHwnd(), htItem)) + { + wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, + this, htItem); + changingEvent.m_itemOld = htOldItem; + + if ( IsTreeEventAllowed(changingEvent) ) + { + DoUnselectAll(); + DoSelectItem(wxTreeItemId(htItem)); + SetFocusedItem(wxTreeItemId(htItem)); + + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, + this, htItem); + changedEvent.m_itemOld = htOldItem; + (void)HandleTreeEvent(changedEvent); + } + } + else + { + SetFocusedItem(wxTreeItemId(htItem)); + m_mouseUpDeselect = true; + } + } + else // click on a single selected item + { + // don't interfere with the default processing in + // WM_MOUSEMOVE handler below as the default window + // proc will start the drag itself if we let have + // WM_LBUTTONDOWN + m_htClickedItem.Unset(); + + // prevent in-place editing from starting if focus lost + // since previous click + if ( m_focusLost ) + { + ClearFocusedItem(); + DoSelectItem(wxTreeItemId(htItem)); + SetFocusedItem(wxTreeItemId(htItem)); + } + else + { + processed = false; + } + } + + // reset on any click without Shift + m_htSelStart.Unset(); + } + + m_focusLost = false; + + // we consumed the event so we need to trigger state image + // click if needed + if ( processed ) + { + if ( tvht.flags & TVHT_ONITEMSTATEICON ) + { + m_triggerStateImageClick = true; + } + } + break; + + case WM_RBUTTONDOWN: + if ( !isMultiple ) + break; + + processed = true; + SetFocus(); + + if ( HandleMouseEvent(nMsg, x, y, wParam) || !htItem ) + { + break; + } + + // default handler removes the highlight from the currently + // focused item when right mouse button is pressed on another + // one but keeps the remaining items highlighted, which is + // confusing, so override this default behaviour + if ( !IsItemSelected(GetHwnd(), htItem) ) + { + wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, + this, htItem); + changingEvent.m_itemOld = htOldItem; + + if ( IsTreeEventAllowed(changingEvent) ) + { + DoUnselectAll(); + DoSelectItem(wxTreeItemId(htItem)); + SetFocusedItem(wxTreeItemId(htItem)); + + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, + this, htItem); + changedEvent.m_itemOld = htOldItem; + (void)HandleTreeEvent(changedEvent); + } + } + + break; + + case WM_MOUSEMOVE: +#ifndef __WXWINCE__ + if ( m_htClickedItem ) + { + int cx = abs(m_ptClick.x - x); + int cy = abs(m_ptClick.y - y); + + if ( cx > ::GetSystemMetrics(SM_CXDRAG) || + cy > ::GetSystemMetrics(SM_CYDRAG) ) + { + NM_TREEVIEW tv; + wxZeroMemory(tv); + + tv.hdr.hwndFrom = GetHwnd(); + tv.hdr.idFrom = ::GetWindowLong(GetHwnd(), GWL_ID); + tv.hdr.code = TVN_BEGINDRAG; + + tv.itemNew.hItem = HITEM(m_htClickedItem); + + + TVITEM tviAux; + wxZeroMemory(tviAux); + + tviAux.hItem = HITEM(m_htClickedItem); + tviAux.mask = TVIF_STATE | TVIF_PARAM; + tviAux.stateMask = 0xffffffff; + TreeView_GetItem(GetHwnd(), &tviAux); + + tv.itemNew.state = tviAux.state; + tv.itemNew.lParam = tviAux.lParam; + + tv.ptDrag.x = x; + tv.ptDrag.y = y; - DeleteTextCtrl(); -} + // do it before SendMessage() call below to avoid + // reentrancies here if there is another WM_MOUSEMOVE + // in the queue already + m_htClickedItem.Unset(); -wxTreeItemId wxTreeCtrl::HitTest(const wxPoint& point, int& flags) -{ - TV_HITTESTINFO hitTestInfo; - hitTestInfo.pt.x = (int)point.x; - hitTestInfo.pt.y = (int)point.y; + ::SendMessage(GetHwndOf(GetParent()), WM_NOTIFY, + tv.hdr.idFrom, (LPARAM)&tv ); - TreeView_HitTest(GetHwnd(), &hitTestInfo); + // don't pass it to the default window proc, it would + // start dragging again + processed = true; + } + } +#endif // __WXWINCE__ - flags = 0; +#if wxUSE_DRAGIMAGE + if ( m_dragImage ) + { + m_dragImage->Move(wxPoint(x, y)); + if ( htItem ) + { + // highlight the item as target (hiding drag image is + // necessary - otherwise the display will be corrupted) + m_dragImage->Hide(); + TreeView_SelectDropTarget(GetHwnd(), htItem); + m_dragImage->Show(); + } + } +#endif // wxUSE_DRAGIMAGE + break; - // avoid repetition - #define TRANSLATE_FLAG(flag) if ( hitTestInfo.flags & TVHT_##flag ) \ - flags |= wxTREE_HITTEST_##flag + case WM_LBUTTONUP: + if ( isMultiple ) + { + // deselect other items if needed + if ( htItem ) + { + if ( m_mouseUpDeselect ) + { + m_mouseUpDeselect = false; + + wxTreeEvent changingEvent(wxEVT_COMMAND_TREE_SEL_CHANGING, + this, htItem); + changingEvent.m_itemOld = htOldItem; + + if ( IsTreeEventAllowed(changingEvent) ) + { + DoUnselectAll(); + DoSelectItem(wxTreeItemId(htItem)); + SetFocusedItem(wxTreeItemId(htItem)); + + wxTreeEvent changedEvent(wxEVT_COMMAND_TREE_SEL_CHANGED, + this, htItem); + changedEvent.m_itemOld = htOldItem; + (void)HandleTreeEvent(changedEvent); + } + } + } + + m_htClickedItem.Unset(); + + if ( m_triggerStateImageClick ) + { + if ( tvht.flags & TVHT_ONITEMSTATEICON ) + { + wxTreeEvent event(wxEVT_COMMAND_TREE_STATE_IMAGE_CLICK, + this, htItem); + (void)HandleTreeEvent(event); + + m_triggerStateImageClick = false; + processed = true; + } + } + + if ( !m_dragStarted && MSWIsOnItem(tvht.flags) ) + { + processed = true; + } + } - TRANSLATE_FLAG(ABOVE); - TRANSLATE_FLAG(BELOW); - TRANSLATE_FLAG(NOWHERE); - TRANSLATE_FLAG(ONITEMBUTTON); - TRANSLATE_FLAG(ONITEMICON); - TRANSLATE_FLAG(ONITEMINDENT); - TRANSLATE_FLAG(ONITEMLABEL); - TRANSLATE_FLAG(ONITEMRIGHT); - TRANSLATE_FLAG(ONITEMSTATEICON); - TRANSLATE_FLAG(TOLEFT); - TRANSLATE_FLAG(TORIGHT); + // fall through - #undef TRANSLATE_FLAG + case WM_RBUTTONUP: +#if wxUSE_DRAGIMAGE + if ( m_dragImage ) + { + m_dragImage->EndDrag(); + wxDELETE(m_dragImage); + + // generate the drag end event + wxTreeEvent event(wxEVT_COMMAND_TREE_END_DRAG, + this, htItem); + event.m_pointDrag = wxPoint(x, y); + (void)HandleTreeEvent(event); + + // if we don't do it, the tree seems to think that 2 items + // are selected simultaneously which is quite weird + TreeView_SelectDropTarget(GetHwnd(), 0); + } +#endif // wxUSE_DRAGIMAGE - return wxTreeItemId((WXHTREEITEM) hitTestInfo.hItem); -} + if ( isMultiple && nMsg == WM_RBUTTONUP ) + { + // send NM_RCLICK + NMHDR nmhdr; + nmhdr.hwndFrom = GetHwnd(); + nmhdr.idFrom = ::GetWindowLong(GetHwnd(), GWL_ID); + nmhdr.code = NM_RCLICK; + ::SendMessage(::GetParent(GetHwnd()), WM_NOTIFY, + nmhdr.idFrom, (LPARAM)&nmhdr); + processed = true; + } -bool wxTreeCtrl::GetBoundingRect(const wxTreeItemId& item, - wxRect& rect, - bool textOnly) const -{ - RECT rc; - if ( TreeView_GetItemRect(GetHwnd(), (HTREEITEM)(WXHTREEITEM)item, - &rc, textOnly) ) - { - rect = wxRect(wxPoint(rc.left, rc.top), wxPoint(rc.right, rc.bottom)); + m_dragStarted = false; - return TRUE; + break; + } } - else + else if ( (nMsg == WM_SETFOCUS || nMsg == WM_KILLFOCUS) ) { - // couldn't retrieve rect: for example, item isn't visible - return FALSE; - } -} - -// ---------------------------------------------------------------------------- -// sorting stuff -// ---------------------------------------------------------------------------- + if ( isMultiple ) + { + // the tree control greys out the selected item when it loses focus + // and paints it as selected again when it regains it, but it won't + // do it for the other items itself - help it + wxArrayTreeItemIds selections; + size_t count = GetSelections(selections); + TVGetItemRectParam param; + + for ( size_t n = 0; n < count; n++ ) + { + // TreeView_GetItemRect() will return false if item is not + // visible, which may happen perfectly well + if ( wxTreeView_GetItemRect(GetHwnd(), HITEM(selections[n]), + param, TRUE) ) + { + ::InvalidateRect(GetHwnd(), ¶m.rect, FALSE); + } + } + } -static int CALLBACK TreeView_CompareCallback(wxTreeItemData *pItem1, - wxTreeItemData *pItem2, - wxTreeCtrl *tree) -{ - wxCHECK_MSG( pItem1 && pItem2, 0, - _T("sorting tree without data doesn't make sense") ); + if ( nMsg == WM_KILLFOCUS ) + { + m_focusLost = true; + } + } + else if ( (nMsg == WM_KEYDOWN || nMsg == WM_SYSKEYDOWN) && isMultiple ) + { + // normally we want to generate wxEVT_KEY_DOWN events from TVN_KEYDOWN + // notification but for the keys which can be used to change selection + // we need to do it from here so as to not apply the default behaviour + // if the events are handled by the user code + switch ( wParam ) + { + case VK_RETURN: + case VK_SPACE: + case VK_UP: + case VK_DOWN: + case VK_LEFT: + case VK_RIGHT: + case VK_HOME: + case VK_END: + case VK_PRIOR: + case VK_NEXT: + if ( !HandleKeyDown(wParam, lParam) && + !MSWHandleTreeKeyDownEvent(wParam, lParam) ) + { + // use the key to update the selection if it was left + // unprocessed + MSWHandleSelectionKey(wParam); + } - return tree->OnCompareItems(pItem1->GetId(), pItem2->GetId()); -} + // pretend that we did process it in any case as we already + // generated an event for it + processed = true; -int wxTreeCtrl::OnCompareItems(const wxTreeItemId& item1, - const wxTreeItemId& item2) -{ - return wxStrcmp(GetItemText(item1), GetItemText(item2)); -} + //default: for all the other keys leave processed as false so that + // the tree control generates a TVN_KEYDOWN for us + } -void wxTreeCtrl::SortChildren(const wxTreeItemId& item) -{ - // rely on the fact that TreeView_SortChildren does the same thing as our - // default behaviour, i.e. sorts items alphabetically and so call it - // directly if we're not in derived class (much more efficient!) - if ( GetClassInfo() == CLASSINFO(wxTreeCtrl) ) - { - TreeView_SortChildren(GetHwnd(), (HTREEITEM)(WXHTREEITEM)item, 0); } - else + else if ( nMsg == WM_COMMAND ) { - TV_SORTCB tvSort; - tvSort.hParent = (HTREEITEM)(WXHTREEITEM)item; - tvSort.lpfnCompare = (PFNTVCOMPARE)TreeView_CompareCallback; - tvSort.lParam = (LPARAM)this; - TreeView_SortChildrenCB(GetHwnd(), &tvSort, 0 /* reserved */); + // if we receive a EN_KILLFOCUS command from the in-place edit control + // used for label editing, make sure to end editing + WORD id, cmd; + WXHWND hwnd; + UnpackCommand(wParam, lParam, &id, &hwnd, &cmd); + + if ( cmd == EN_KILLFOCUS ) + { + if ( m_textCtrl && m_textCtrl->GetHandle() == hwnd ) + { + DoEndEditLabel(); + + processed = true; + } + } } -} -// ---------------------------------------------------------------------------- -// implementation -// ---------------------------------------------------------------------------- + if ( !processed ) + rc = wxControl::MSWWindowProc(nMsg, wParam, lParam); + + return rc; +} -bool wxTreeCtrl::MSWCommand(WXUINT cmd, WXWORD id) +WXLRESULT +wxTreeCtrl::MSWDefWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) { - if ( cmd == EN_UPDATE ) - { - wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, id); - event.SetEventObject( this ); - ProcessCommand(event); - } - else if ( cmd == EN_KILLFOCUS ) + if ( nMsg == WM_CHAR ) { - wxCommandEvent event(wxEVT_KILL_FOCUS, id); - event.SetEventObject( this ); - ProcessCommand(event); + // don't let the control process Space and Return keys because it + // doesn't do anything useful with them anyhow but always beeps + // annoyingly when it receives them and there is no way to turn it off + // simply if you just process TREEITEM_ACTIVATED event to which Space + // and Enter presses are mapped in your code + if ( wParam == VK_SPACE || wParam == VK_RETURN ) + return 0; } - else +#if wxUSE_DRAGIMAGE + else if ( nMsg == WM_KEYDOWN ) { - // nothing done - return FALSE; + if ( wParam == VK_ESCAPE ) + { + if ( m_dragImage ) + { + m_dragImage->EndDrag(); + wxDELETE(m_dragImage); + + // if we don't do it, the tree seems to think that 2 items + // are selected simultaneously which is quite weird + TreeView_SelectDropTarget(GetHwnd(), 0); + } + } } +#endif // wxUSE_DRAGIMAGE - // command processed - return TRUE; + return wxControl::MSWDefWindowProc(nMsg, wParam, lParam); } // process WM_NOTIFY Windows message bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result) { - wxTreeEvent event(wxEVT_NULL, m_windowId); + wxTreeEvent event(wxEVT_NULL, this); wxEventType eventType = wxEVT_NULL; NMHDR *hdr = (NMHDR *)lParam; @@ -1163,39 +3264,86 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result) NM_TREEVIEW *tv = (NM_TREEVIEW *)lParam; - event.m_item = (WXHTREEITEM) tv->itemNew.hItem; + event.m_item = tv->itemNew.hItem; event.m_pointDrag = wxPoint(tv->ptDrag.x, tv->ptDrag.y); - break; + + // don't allow dragging by default: the user code must + // explicitly say that it wants to allow it to avoid breaking + // the old apps + event.Veto(); } + break; case TVN_BEGINLABELEDIT: { eventType = wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT; TV_DISPINFO *info = (TV_DISPINFO *)lParam; - event.m_item = (WXHTREEITEM) info->item.hItem; + // although the user event handler may still veto it, it is + // important to set it now so that calls to SetItemText() from + // the event handler would change the text controls contents + m_idEdited = + event.m_item = info->item.hItem; event.m_label = info->item.pszText; - break; + event.m_editCancelled = false; } + break; case TVN_DELETEITEM: { eventType = wxEVT_COMMAND_TREE_DELETE_ITEM; NM_TREEVIEW *tv = (NM_TREEVIEW *)lParam; - event.m_item = (WXHTREEITEM) tv->itemOld.hItem; - break; + event.m_item = tv->itemOld.hItem; + + if ( m_hasAnyAttr ) + { + wxMapTreeAttr::iterator it = m_attrs.find(tv->itemOld.hItem); + if ( it != m_attrs.end() ) + { + delete it->second; + m_attrs.erase(it); + } + } } + break; case TVN_ENDLABELEDIT: { eventType = wxEVT_COMMAND_TREE_END_LABEL_EDIT; TV_DISPINFO *info = (TV_DISPINFO *)lParam; - event.m_item = (WXHTREEITEM)info->item.hItem; + event.m_item = info->item.hItem; event.m_label = info->item.pszText; + event.m_editCancelled = info->item.pszText == NULL; + break; + } + +#ifndef __WXWINCE__ + // These *must* not be removed or TVN_GETINFOTIP will + // not be processed each time the mouse is moved + // and the tooltip will only ever update once. + case TTN_NEEDTEXTA: + case TTN_NEEDTEXTW: + { + *result = 0; + + break; + } + +#ifdef TVN_GETINFOTIP + case TVN_GETINFOTIP: + { + eventType = wxEVT_COMMAND_TREE_ITEM_GETTOOLTIP; + NMTVGETINFOTIP *info = (NMTVGETINFOTIP*)lParam; + + // Which item are we trying to get a tooltip for? + event.m_item = info->hItem; + break; } +#endif // TVN_GETINFOTIP +#endif // !__WXWINCE__ case TVN_GETDISPINFO: eventType = wxEVT_COMMAND_TREE_GET_INFO; @@ -1209,143 +3357,598 @@ bool wxTreeCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result) TV_DISPINFO *info = (TV_DISPINFO *)lParam; - event.m_item = (WXHTREEITEM) info->item.hItem; + event.m_item = info->item.hItem; break; } case TVN_ITEMEXPANDING: - event.m_code = FALSE; - // fall through - case TVN_ITEMEXPANDED: { - NM_TREEVIEW* tv = (NM_TREEVIEW*)lParam; + NM_TREEVIEW *tv = (NM_TREEVIEW*)lParam; - bool expand = FALSE; + int what; switch ( tv->action ) { + default: + wxLogDebug(wxT("unexpected code %d in TVN_ITEMEXPAND message"), tv->action); + // fall through + case TVE_EXPAND: - expand = TRUE; + what = IDX_EXPAND; break; case TVE_COLLAPSE: - expand = FALSE; + what = IDX_COLLAPSE; break; - - default: - wxLogDebug(_T("unexpected code %d in TVN_ITEMEXPAND " - "message"), tv->action); } - bool ing = (hdr->code == TVN_ITEMEXPANDING); - eventType = g_events[expand][ing]; + int how = hdr->code == TVN_ITEMEXPANDING ? IDX_DOING + : IDX_DONE; - event.m_item = (WXHTREEITEM) tv->itemNew.hItem; - break; + eventType = gs_expandEvents[what][how]; + + event.m_item = tv->itemNew.hItem; } + break; case TVN_KEYDOWN: { - eventType = wxEVT_COMMAND_TREE_KEY_DOWN; TV_KEYDOWN *info = (TV_KEYDOWN *)lParam; - event.m_code = wxCharCodeMSWToWX(info->wVKey); + // fabricate the lParam and wParam parameters sufficiently + // similar to the ones from a "real" WM_KEYDOWN so that + // CreateKeyEvent() works correctly + return MSWHandleTreeKeyDownEvent( + info->wVKey, (wxIsAltDown() ? KF_ALTDOWN : 0) << 16); + } + - // a separate event for this case - if ( info->wVKey == VK_SPACE || info->wVKey == VK_RETURN ) - { - wxTreeEvent event2(wxEVT_COMMAND_TREE_ITEM_ACTIVATED, - m_windowId); - event2.SetEventObject(this); + // Vista's tree control has introduced some problems with our + // multi-selection tree. When TreeView_SelectItem() is called, + // the wrong items are deselected. - GetEventHandler()->ProcessEvent(event2); + // Fortunately, Vista provides a new notification, TVN_ITEMCHANGING + // that can be used to regulate this incorrect behaviour. The + // following messages will allow only the unlocked item's selection + // state to change + + case TVN_ITEMCHANGINGA: + case TVN_ITEMCHANGINGW: + { + // we only need to handles these in multi-select trees + if ( HasFlag(wxTR_MULTIPLE) ) + { + // get info about the item about to be changed + NMTVITEMCHANGE* info = (NMTVITEMCHANGE*)lParam; + if (TreeItemUnlocker::IsLocked(info->hItem)) + { + // item's state is locked, don't allow the change + // returning 1 will disallow the change + *result = 1; + return true; + } } - break; - } - case TVN_SELCHANGED: - eventType = wxEVT_COMMAND_TREE_SEL_CHANGED; + // allow the state change + } + return false; + + // NB: MSLU is broken and sends TVN_SELCHANGEDA instead of + // TVN_SELCHANGEDW in Unicode mode under Win98. Therefore + // we have to handle both messages: + case TVN_SELCHANGEDA: + case TVN_SELCHANGEDW: + if ( !m_changingSelection ) + { + eventType = wxEVT_COMMAND_TREE_SEL_CHANGED; + } // fall through - case TVN_SELCHANGING: + case TVN_SELCHANGINGA: + case TVN_SELCHANGINGW: + if ( !m_changingSelection ) { if ( eventType == wxEVT_NULL ) eventType = wxEVT_COMMAND_TREE_SEL_CHANGING; //else: already set above - NM_TREEVIEW* tv = (NM_TREEVIEW *)lParam; + if (hdr->code == TVN_SELCHANGINGW || + hdr->code == TVN_SELCHANGEDW) + { + NM_TREEVIEWW *tv = (NM_TREEVIEWW *)lParam; + event.m_item = tv->itemNew.hItem; + event.m_itemOld = tv->itemOld.hItem; + } + else + { + NM_TREEVIEWA *tv = (NM_TREEVIEWA *)lParam; + event.m_item = tv->itemNew.hItem; + event.m_itemOld = tv->itemOld.hItem; + } + } + + // we receive this message from WM_LBUTTONDOWN handler inside + // comctl32.dll and so before the click is passed to + // DefWindowProc() which sets the focus to the window which was + // clicked and this can lead to unexpected event sequences: for + // example, we may get a "selection change" event from the tree + // before getting a "kill focus" event for the text control which + // had the focus previously, thus breaking user code doing input + // validation + // + // to avoid such surprises, we force the generation of focus events + // now, before we generate the selection change ones + if ( !m_changingSelection && !m_isBeingDeleted ) + SetFocus(); + break; + + // instead of explicitly checking for _WIN32_IE, check if the + // required symbols are available in the headers +#if defined(CDDS_PREPAINT) + case NM_CUSTOMDRAW: + { + LPNMTVCUSTOMDRAW lptvcd = (LPNMTVCUSTOMDRAW)lParam; + NMCUSTOMDRAW& nmcd = lptvcd->nmcd; + switch ( nmcd.dwDrawStage ) + { + case CDDS_PREPAINT: + // if we've got any items with non standard attributes, + // notify us before painting each item + *result = m_hasAnyAttr ? CDRF_NOTIFYITEMDRAW + : CDRF_DODEFAULT; + + // windows in TreeCtrl use one-based index for item state images, + // 0 indexed image is not being used, we're using zero-based index, + // so we have to add temp image (of zero index) to state image list + // before we draw any item, then after items are drawn we have to + // delete it (in POSTPAINT notify) + if (m_imageListState && m_imageListState->GetImageCount() > 0) + { + typedef BOOL (wxSTDCALL *ImageList_Copy_t) + (HIMAGELIST, int, HIMAGELIST, int, UINT); + static ImageList_Copy_t s_pfnImageList_Copy = NULL; + static bool loaded = false; + + if ( !loaded ) + { + wxLoadedDLL dllComCtl32(wxT("comctl32.dll")); + if ( dllComCtl32.IsLoaded() ) + { + wxDL_INIT_FUNC(s_pfn, ImageList_Copy, dllComCtl32); + loaded = true; + } + } + + if ( !s_pfnImageList_Copy ) + { + // this code is broken with ImageList_Copy() + // but I don't care enough about Win95 support + // to write it now -- if anybody does, please + // do it + wxFAIL_MSG("TODO: implement this for Win95"); + break; + } + + const HIMAGELIST + hImageList = GetHimagelistOf(m_imageListState); + + // add temporary image + int width, height; + m_imageListState->GetSize(0, width, height); + + HBITMAP hbmpTemp = ::CreateBitmap(width, height, 1, 1, NULL); + int index = ::ImageList_Add(hImageList, hbmpTemp, hbmpTemp); + ::DeleteObject(hbmpTemp); + + if ( index != -1 ) + { + // move images to right + for ( int i = index; i > 0; i-- ) + { + (*s_pfnImageList_Copy)(hImageList, i, + hImageList, i-1, + ILCF_MOVE); + } + + // we must remove the image in POSTPAINT notify + *result |= CDRF_NOTIFYPOSTPAINT; + } + } + break; + + case CDDS_POSTPAINT: + // we are deleting temp image of 0 index, which was + // added before items were drawn (in PREPAINT notify) + if (m_imageListState && m_imageListState->GetImageCount() > 0) + m_imageListState->Remove(0); + break; + + case CDDS_ITEMPREPAINT: + { + wxMapTreeAttr::iterator + it = m_attrs.find((void *)nmcd.dwItemSpec); + + if ( it == m_attrs.end() ) + { + // nothing to do for this item + *result = CDRF_DODEFAULT; + break; + } + + wxTreeItemAttr * const attr = it->second; + + wxTreeViewItem tvItem((void *)nmcd.dwItemSpec, + TVIF_STATE, TVIS_DROPHILITED); + DoGetItem(&tvItem); + const UINT tvItemState = tvItem.state; + + // selection colours should override ours, + // otherwise it is too confusing to the user + if ( !(nmcd.uItemState & CDIS_SELECTED) && + !(tvItemState & TVIS_DROPHILITED) ) + { + wxColour colBack; + if ( attr->HasBackgroundColour() ) + { + colBack = attr->GetBackgroundColour(); + lptvcd->clrTextBk = wxColourToRGB(colBack); + } + } + + // but we still want to keep the special foreground + // colour when we don't have focus (we can't keep + // it when we do, it would usually be unreadable on + // the almost inverted bg colour...) + if ( ( !(nmcd.uItemState & CDIS_SELECTED) || + FindFocus() != this ) && + !(tvItemState & TVIS_DROPHILITED) ) + { + wxColour colText; + if ( attr->HasTextColour() ) + { + colText = attr->GetTextColour(); + lptvcd->clrText = wxColourToRGB(colText); + } + } + + if ( attr->HasFont() ) + { + HFONT hFont = GetHfontOf(attr->GetFont()); + + ::SelectObject(nmcd.hdc, hFont); + + *result = CDRF_NEWFONT; + } + else // no specific font + { + *result = CDRF_DODEFAULT; + } + } + break; + + default: + *result = CDRF_DODEFAULT; + } + } + + // we always process it + return true; +#endif // have owner drawn support in headers + + case NM_CLICK: + { + DWORD pos = GetMessagePos(); + POINT point; + point.x = LOWORD(pos); + point.y = HIWORD(pos); + ::MapWindowPoints(HWND_DESKTOP, GetHwnd(), &point, 1); + int htFlags = 0; + wxTreeItemId item = HitTest(wxPoint(point.x, point.y), htFlags); + + if ( htFlags & wxTREE_HITTEST_ONITEMSTATEICON ) + { + event.m_item = item; + eventType = wxEVT_COMMAND_TREE_STATE_IMAGE_CLICK; + } - event.m_item = (WXHTREEITEM) tv->itemNew.hItem; - event.m_itemOld = (WXHTREEITEM) tv->itemOld.hItem; break; } + case NM_DBLCLK: + case NM_RCLICK: + { + TV_HITTESTINFO tvhti; + wxGetCursorPosMSW(&tvhti.pt); + ::ScreenToClient(GetHwnd(), &tvhti.pt); + if ( TreeView_HitTest(GetHwnd(), &tvhti) ) + { + if ( MSWIsOnItem(tvhti.flags) ) + { + event.m_item = tvhti.hItem; + eventType = (int)hdr->code == NM_DBLCLK + ? wxEVT_COMMAND_TREE_ITEM_ACTIVATED + : wxEVT_COMMAND_TREE_ITEM_RIGHT_CLICK; + + event.m_pointDrag.x = tvhti.pt.x; + event.m_pointDrag.y = tvhti.pt.y; + } + + break; + } + } + // fall through + default: return wxControl::MSWOnNotify(idCtrl, lParam, result); } - event.SetEventObject(this); event.SetEventType(eventType); - bool processed = GetEventHandler()->ProcessEvent(event); + bool processed = HandleTreeEvent(event); // post processing switch ( hdr->code ) { + case NM_DBLCLK: + // we translate NM_DBLCLK into ACTIVATED event and if the user + // handled the activation of the item we shouldn't proceed with + // also using the same double click for toggling the item expanded + // state -- but OTOH do let the user to expand/collapse the item by + // double clicking on it if the activation is not handled specially + *result = processed; + break; + + case NM_RCLICK: + // prevent tree control from sending WM_CONTEXTMENU to our parent + // (which it does if NM_RCLICK is not handled) because we want to + // send it to the control itself + *result = + processed = true; + + ::SendMessage(GetHwnd(), WM_CONTEXTMENU, + (WPARAM)GetHwnd(), ::GetMessagePos()); + break; + + case TVN_BEGINDRAG: + case TVN_BEGINRDRAG: +#if wxUSE_DRAGIMAGE + if ( event.IsAllowed() ) + { + // normally this is impossible because the m_dragImage is + // deleted once the drag operation is over + wxASSERT_MSG( !m_dragImage, wxT("starting to drag once again?") ); + + m_dragImage = new wxDragImage(*this, event.m_item); + m_dragImage->BeginDrag(wxPoint(0,0), this); + m_dragImage->Show(); + + m_dragStarted = true; + } +#endif // wxUSE_DRAGIMAGE + break; + case TVN_DELETEITEM: { - // NB: we might process this message using wxWindows event + // NB: we might process this message using wxWidgets 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; - wxTreeItemData *data = (wxTreeItemData *)tv->itemOld.lParam; - delete data; // may be NULL, ok + NM_TREEVIEW *tv = (NM_TREEVIEW *)lParam; + + wxTreeItemParam *param = + (wxTreeItemParam *)tv->itemOld.lParam; + delete param; - processed = TRUE; // Make sure we don't get called twice + processed = true; // Make sure we don't get called twice } break; case TVN_BEGINLABELEDIT: - // return TRUE to cancel label editing + // return true to cancel label editing *result = !event.IsAllowed(); + + // set ES_WANTRETURN ( like we do in BeginLabelEdit ) + if ( event.IsAllowed() ) + { + HWND hText = TreeView_GetEditControl(GetHwnd()); + if ( hText ) + { + // MBN: if m_textCtrl already has an HWND, it is a stale + // pointer from a previous edit (because the user + // didn't modify the label before dismissing the control, + // and TVN_ENDLABELEDIT was not sent), so delete it + if ( m_textCtrl && m_textCtrl->GetHWND() ) + DeleteTextCtrl(); + if ( !m_textCtrl ) + m_textCtrl = new wxTextCtrl(); + m_textCtrl->SetParent(this); + m_textCtrl->SetHWND((WXHWND)hText); + m_textCtrl->SubclassWin((WXHWND)hText); + + // set wxTE_PROCESS_ENTER style for the text control to + // force it to process the Enter presses itself, otherwise + // they could be stolen from it by the dialog + // navigation code + m_textCtrl->SetWindowStyle(m_textCtrl->GetWindowStyle() + | wxTE_PROCESS_ENTER); + } + } + else // we had set m_idEdited before + { + m_idEdited.Unset(); + } break; case TVN_ENDLABELEDIT: - // return TRUE to set the label to the new string + // return true to set the label to the new string: note that we + // also must pretend that we did process the message or it is going + // to be passed to DefWindowProc() which will happily return false + // cancelling the label change *result = event.IsAllowed(); + processed = true; // ensure that we don't have the text ctrl which is going to be // deleted any more DeleteTextCtrl(); break; +#ifndef __WXWINCE__ +#ifdef TVN_GETINFOTIP + case TVN_GETINFOTIP: + { + // If the user permitted a tooltip change, change it + if (event.IsAllowed()) + { + SetToolTip(event.m_label); + } + } + break; +#endif +#endif + case TVN_SELCHANGING: case TVN_ITEMEXPANDING: - // return TRUE to prevent the action from happening + // return true to prevent the action from happening *result = !event.IsAllowed(); break; + case TVN_ITEMEXPANDED: + { + NM_TREEVIEW *tv = (NM_TREEVIEW *)lParam; + const wxTreeItemId id(tv->itemNew.hItem); + + if ( tv->action == TVE_COLLAPSE ) + { + if ( wxApp::GetComCtl32Version() >= 600 ) + { + // for some reason the item selection rectangle depends + // on whether it is expanded or collapsed (at least + // with comctl32.dll v6): it is wider (by 3 pixels) in + // the expanded state, so when the item collapses and + // then is deselected the rightmost 3 pixels of the + // previously drawn selection are left on the screen + // + // it's not clear if it's a bug in comctl32.dll or in + // our code (because it does not happen in Explorer but + // OTOH we don't do anything which could result in this + // AFAICS) but we do need to work around it to avoid + // ugly artifacts + RefreshItem(id); + } + } + else // expand + { + // the item is also not refreshed properly after expansion when + // it has an image depending on the expanded/collapsed state: + // again, it's not clear if the bug is in comctl32.dll or our + // code... + int image = GetItemImage(id, wxTreeItemIcon_Expanded); + if ( image != -1 ) + { + RefreshItem(id); + } + } + } + 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 && */ ) + { + wxTreeItemId item = event.m_item; + TV_DISPINFO *info = (TV_DISPINFO *)lParam; + + const wxTreeItemParam * const param = GetItemParam(item); + if ( !param ) + break; + + if ( info->item.mask & TVIF_IMAGE ) + { + info->item.iImage = + param->GetImage + ( + IsExpanded(item) ? wxTreeItemIcon_Expanded + : wxTreeItemIcon_Normal + ); + } + if ( info->item.mask & TVIF_SELECTEDIMAGE ) + { + info->item.iSelectedImage = + param->GetImage + ( + 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; } // ---------------------------------------------------------------------------- -// Tree event +// State control. +// ---------------------------------------------------------------------------- + +// why do they define INDEXTOSTATEIMAGEMASK but not the inverse? +#define STATEIMAGEMASKTOINDEX(state) (((state) & TVIS_STATEIMAGEMASK) >> 12) + +int wxTreeCtrl::DoGetItemState(const wxTreeItemId& item) const +{ + wxCHECK_MSG( item.IsOk(), wxTREE_ITEMSTATE_NONE, wxT("invalid tree item") ); + + // receive the desired information + wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_STATEIMAGEMASK); + DoGetItem(&tvItem); + + // state images are one-based + return STATEIMAGEMASKTOINDEX(tvItem.state) - 1; +} + +void wxTreeCtrl::DoSetItemState(const wxTreeItemId& item, int state) +{ + wxCHECK_RET( item.IsOk(), wxT("invalid tree item") ); + + wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_STATEIMAGEMASK); + + // state images are one-based + // 0 if no state image display (wxTREE_ITEMSTATE_NONE = -1) + tvItem.state = INDEXTOSTATEIMAGEMASK(state + 1); + + DoSetItem(&tvItem); +} + +// ---------------------------------------------------------------------------- +// Update locking. // ---------------------------------------------------------------------------- -IMPLEMENT_DYNAMIC_CLASS(wxTreeEvent, wxNotifyEvent) +// Using WM_SETREDRAW with the native control is a bad idea as it's broken in +// some Windows versions (see http://support.microsoft.com/kb/130611) and +// doesn't seem to do anything in other ones (e.g. under Windows 7 the tree +// control keeps updating its scrollbars while the items are added to it, +// resulting in horrible flicker when adding even a couple of dozen items). +// So we hide it instead of freezing -- this still flickers, but actually not +// as badly as it would if we didn't do it. -wxTreeEvent::wxTreeEvent(wxEventType commandType, int id) - : wxNotifyEvent(commandType, id) +void wxTreeCtrl::DoFreeze() { - m_code = 0; - m_itemOld = 0; + // Notice that we don't call wxWindow::Hide() here as we want the window to + // remain shown from wxWidgets point of view and also because + // wxWindowMSW::Show() calls Do{Freeze,Thaw}() itself, so we'd get into + // infinite recursion this way. + if ( IsShown() ) + ::ShowWindow(GetHwnd(), SW_HIDE); } -#endif // __WIN95__ +void wxTreeCtrl::DoThaw() +{ + if ( IsShown() ) + ::ShowWindow(GetHwnd(), SW_SHOW); +} +#endif // wxUSE_TREECTRL