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reactos/dll/win32/browseui/explorerband.cpp
Katayama Hirofumi MZ d04f2e5209
[BROWSEUI] Add 'm_' prefix to CExplorerBand members (#2524) 
Add 'm_' prefix to the variable members of class CExplorerBand for readability.
CORE-13950
2020-04-10 23:08:31 +09:00

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/*
* ReactOS Explorer
*
* Copyright 2016 Sylvain Deverre <deverre dot sylv at gmail dot com>
* Copyright 2020 Katayama Hirofumi MZ <katayama.hirofumi.mz@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "precomp.h"
#include <commoncontrols.h>
#include <undocshell.h>
#if 1
#undef UNIMPLEMENTED
#define UNIMPLEMENTED DbgPrint("%s is UNIMPLEMENTED!\n", __FUNCTION__)
#endif
/*
* TODO:
* - Monitor correctly "external" shell interrupts (seems like we need to register/deregister them for each folder)
* - find and fix what cause explorer crashes sometimes (seems to be explorer that does more releases than addref)
* - TESTING
*/
typedef struct _PIDLDATA
{
BYTE type;
BYTE data[1];
} PIDLDATA, *LPPIDLDATA;
#define PT_GUID 0x1F
#define PT_SHELLEXT 0x2E
#define PT_YAGUID 0x70
static BOOL _ILIsSpecialFolder (LPCITEMIDLIST pidl)
{
LPPIDLDATA lpPData = (LPPIDLDATA)&pidl->mkid.abID;
return (pidl &&
((lpPData && (PT_GUID == lpPData->type || PT_SHELLEXT== lpPData->type ||
PT_YAGUID == lpPData->type)) || (pidl && pidl->mkid.cb == 0x00)));
}
HRESULT GetDisplayName(LPCITEMIDLIST pidlDirectory,TCHAR *szDisplayName,UINT cchMax,DWORD uFlags)
{
IShellFolder *pShellFolder = NULL;
LPCITEMIDLIST pidlRelative = NULL;
STRRET str;
HRESULT hr;
if (pidlDirectory == NULL || szDisplayName == NULL)
{
return E_FAIL;
}
hr = SHBindToParent(pidlDirectory, IID_PPV_ARG(IShellFolder, &pShellFolder), &pidlRelative);
if (SUCCEEDED(hr))
{
hr = pShellFolder->GetDisplayNameOf(pidlRelative,uFlags,&str);
if (SUCCEEDED(hr))
{
hr = StrRetToBuf(&str,pidlDirectory,szDisplayName,cchMax);
}
pShellFolder->Release();
}
return hr;
}
/*
This is a Windows hack, because shell event messages in Windows gives an
ill-formed PIDL stripped from useful data that parses incorrectly with SHGetFileInfo.
So we need to re-enumerate subfolders until we find one with the same name.
*/
HRESULT _ReparsePIDL(LPITEMIDLIST buggyPidl, LPITEMIDLIST *cleanPidl)
{
HRESULT hr;
CComPtr<IShellFolder> folder;
CComPtr<IPersistFolder2> persist;
CComPtr<IEnumIDList> pEnumIDList;
LPITEMIDLIST childPidl;
LPITEMIDLIST correctChild;
LPITEMIDLIST correctParent;
ULONG fetched;
DWORD EnumFlags;
EnumFlags = SHCONTF_FOLDERS | SHCONTF_INCLUDEHIDDEN;
hr = SHBindToParent(buggyPidl, IID_PPV_ARG(IShellFolder, &folder), (LPCITEMIDLIST*)&childPidl);
*cleanPidl = NULL;
if (!SUCCEEDED(hr))
{
ERR("Can't bind to parent folder\n");
return hr;
}
hr = folder->QueryInterface(IID_PPV_ARG(IPersistFolder2, &persist));
if (!SUCCEEDED(hr))
{
ERR("PIDL doesn't belong to the shell namespace, aborting\n");
return hr;
}
hr = persist->GetCurFolder(&correctParent);
if (!SUCCEEDED(hr))
{
ERR("Unable to get current folder\n");
return hr;
}
hr = folder->EnumObjects(NULL,EnumFlags,&pEnumIDList);
// avoid broken IShellFolder implementations that return null pointer with success
if (!SUCCEEDED(hr) || !pEnumIDList)
{
ERR("Can't enum the folder !\n");
return hr;
}
while(SUCCEEDED(pEnumIDList->Next(1, &correctChild, &fetched)) && correctChild && fetched)
{
if (!folder->CompareIDs(0, childPidl, correctChild))
{
*cleanPidl = ILCombine(correctParent, correctChild);
ILFree(correctChild);
goto Cleanup;
}
ILFree(correctChild);
}
Cleanup:
ILFree(correctParent);
return hr;
}
CExplorerBand::CExplorerBand()
: m_pSite(NULL)
, m_fVisible(FALSE)
, m_bNavigating(FALSE)
, m_dwBandID(0)
, m_pidlCurrent(NULL)
{
}
CExplorerBand::~CExplorerBand()
{
if (m_pidlCurrent)
{
ILFree(m_pidlCurrent);
}
}
void CExplorerBand::InitializeExplorerBand()
{
// Init the treeview here
HRESULT hr;
LPITEMIDLIST pidl;
CComPtr<IWebBrowser2> browserService;
SHChangeNotifyEntry shcne;
hr = SHGetDesktopFolder(&m_pDesktop);
if (FAILED_UNEXPECTEDLY(hr))
return;
hr = SHGetFolderLocation(m_hWnd, CSIDL_DESKTOP, NULL, 0, &pidl);
if (FAILED_UNEXPECTEDLY(hr))
return;
IImageList * piml;
hr = SHGetImageList(SHIL_SMALL, IID_PPV_ARG(IImageList, &piml));
if (FAILED_UNEXPECTEDLY(hr))
return;
TreeView_SetImageList(m_hWnd, (HIMAGELIST)piml, TVSIL_NORMAL);
// Insert the root node
m_hRoot = InsertItem(0, m_pDesktop, pidl, pidl, FALSE);
if (!m_hRoot)
{
ERR("Failed to create root item\n");
return;
}
NodeInfo* pNodeInfo = GetNodeInfo(m_hRoot);
// Insert child nodes
InsertSubitems(m_hRoot, pNodeInfo);
TreeView_Expand(m_hWnd, m_hRoot, TVE_EXPAND);
// Navigate to current folder position
NavigateToCurrentFolder();
// Register shell notification
shcne.pidl = pidl;
shcne.fRecursive = TRUE;
m_shellRegID = SHChangeNotifyRegister(
m_hWnd,
SHCNRF_ShellLevel | SHCNRF_InterruptLevel | SHCNRF_RecursiveInterrupt,
SHCNE_DISKEVENTS | SHCNE_RENAMEFOLDER | SHCNE_RMDIR | SHCNE_MKDIR,
WM_USER_SHELLEVENT,
1,
&shcne);
if (!m_shellRegID)
{
ERR("Something went wrong, error %08x\n", GetLastError());
}
// Register browser connection endpoint
hr = IUnknown_QueryService(m_pSite, SID_SWebBrowserApp, IID_PPV_ARG(IWebBrowser2, &browserService));
if (FAILED_UNEXPECTEDLY(hr))
return;
hr = AtlAdvise(browserService, dynamic_cast<IDispatch*>(this), DIID_DWebBrowserEvents, &m_adviseCookie);
if (FAILED_UNEXPECTEDLY(hr))
return;
ILFree(pidl);
}
void CExplorerBand::DestroyExplorerBand()
{
HRESULT hr;
CComPtr <IWebBrowser2> browserService;
TRACE("Cleaning up explorer band ...\n");
hr = IUnknown_QueryService(m_pSite, SID_SWebBrowserApp, IID_PPV_ARG(IWebBrowser2, &browserService));
if (FAILED_UNEXPECTEDLY(hr))
return;
hr = AtlUnadvise(browserService, DIID_DWebBrowserEvents, m_adviseCookie);
/* Remove all items of the treeview */
RevokeDragDrop(m_hWnd);
TreeView_DeleteAllItems(m_hWnd);
m_pDesktop = NULL;
m_hRoot = NULL;
TRACE("Cleanup done !\n");
}
CExplorerBand::NodeInfo* CExplorerBand::GetNodeInfo(HTREEITEM hItem)
{
TVITEM tvItem;
tvItem.mask = TVIF_PARAM;
tvItem.hItem = hItem;
if (!TreeView_GetItem(m_hWnd, &tvItem))
return 0;
return reinterpret_cast<NodeInfo*>(tvItem.lParam);
}
HRESULT CExplorerBand::ExecuteCommand(CComPtr<IContextMenu>& menu, UINT nCmd)
{
CComPtr<IOleWindow> pBrowserOleWnd;
CMINVOKECOMMANDINFO cmi;
HWND browserWnd;
HRESULT hr;
hr = IUnknown_QueryService(m_pSite, SID_SShellBrowser, IID_PPV_ARG(IOleWindow, &pBrowserOleWnd));
if (FAILED_UNEXPECTEDLY(hr))
return hr;
hr = pBrowserOleWnd->GetWindow(&browserWnd);
if (FAILED_UNEXPECTEDLY(hr))
return hr;
ZeroMemory(&cmi, sizeof(cmi));
cmi.cbSize = sizeof(cmi);
cmi.lpVerb = MAKEINTRESOURCEA(nCmd);
cmi.hwnd = browserWnd;
if (GetKeyState(VK_SHIFT) & 0x8000)
cmi.fMask |= CMIC_MASK_SHIFT_DOWN;
if (GetKeyState(VK_CONTROL) & 0x8000)
cmi.fMask |= CMIC_MASK_CONTROL_DOWN;
return menu->InvokeCommand(&cmi);
}
HRESULT CExplorerBand::UpdateBrowser(LPITEMIDLIST pidlGoto)
{
CComPtr<IShellBrowser> pBrowserService;
HRESULT hr;
hr = IUnknown_QueryService(m_pSite, SID_STopLevelBrowser, IID_PPV_ARG(IShellBrowser, &pBrowserService));
if (FAILED_UNEXPECTEDLY(hr))
return hr;
hr = pBrowserService->BrowseObject(pidlGoto, SBSP_SAMEBROWSER | SBSP_ABSOLUTE);
if (FAILED_UNEXPECTEDLY(hr))
return hr;
if (m_pidlCurrent)
{
ILFree(m_pidlCurrent);
m_pidlCurrent = ILClone(pidlGoto);
}
return hr;
}
// *** notifications handling ***
BOOL CExplorerBand::OnTreeItemExpanding(LPNMTREEVIEW pnmtv)
{
NodeInfo *pNodeInfo;
if (pnmtv->action == TVE_COLLAPSE) {
if (pnmtv->itemNew.hItem == m_hRoot)
{
// Prenvent root from collapsing
pnmtv->itemNew.mask |= TVIF_STATE;
pnmtv->itemNew.stateMask |= TVIS_EXPANDED;
pnmtv->itemNew.state &= ~TVIS_EXPANDED;
pnmtv->action = TVE_EXPAND;
return TRUE;
}
}
if (pnmtv->action == TVE_EXPAND) {
// Grab our directory PIDL
pNodeInfo = GetNodeInfo(pnmtv->itemNew.hItem);
// We have it, let's try
if (pNodeInfo && !pNodeInfo->expanded)
if (!InsertSubitems(pnmtv->itemNew.hItem, pNodeInfo)) {
// remove subitem "+" since we failed to add subitems
TV_ITEM tvItem;
tvItem.mask = TVIF_CHILDREN;
tvItem.hItem = pnmtv->itemNew.hItem;
tvItem.cChildren = 0;
TreeView_SetItem(m_hWnd, &tvItem);
}
}
return FALSE;
}
BOOL CExplorerBand::OnTreeItemDeleted(LPNMTREEVIEW pnmtv)
{
/* Destroy memory associated to our node */
NodeInfo* ptr = GetNodeInfo(pnmtv->itemNew.hItem);
if (ptr)
{
ILFree(ptr->relativePidl);
ILFree(ptr->absolutePidl);
delete ptr;
}
return TRUE;
}
void CExplorerBand::OnSelectionChanged(LPNMTREEVIEW pnmtv)
{
NodeInfo* pNodeInfo = GetNodeInfo(pnmtv->itemNew.hItem);
/* Prevents navigation if selection is initiated inside the band */
if (m_bNavigating)
return;
UpdateBrowser(pNodeInfo->absolutePidl);
SetFocus();
// Expand the node
//TreeView_Expand(m_hWnd, pnmtv->itemNew.hItem, TVE_EXPAND);
}
void CExplorerBand::OnTreeItemDragging(LPNMTREEVIEW pnmtv, BOOL isRightClick)
{
CComPtr<IShellFolder> pSrcFolder;
CComPtr<IDataObject> pObj;
LPCITEMIDLIST pLast;
HRESULT hr;
DWORD dwEffect;
DWORD dwEffect2;
dwEffect = DROPEFFECT_COPY | DROPEFFECT_MOVE;
if (!pnmtv->itemNew.lParam)
return;
NodeInfo* pNodeInfo = GetNodeInfo(pnmtv->itemNew.hItem);
hr = SHBindToParent(pNodeInfo->absolutePidl, IID_PPV_ARG(IShellFolder, &pSrcFolder), &pLast);
if (!SUCCEEDED(hr))
return;
hr = pSrcFolder->GetUIObjectOf(m_hWnd, 1, &pLast, IID_IDataObject, 0, reinterpret_cast<void**>(&pObj));
if (!SUCCEEDED(hr))
return;
DoDragDrop(pObj, this, dwEffect, &dwEffect2);
return;
}
// *** ATL event handlers ***
LRESULT CExplorerBand::OnContextMenu(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL &bHandled)
{
HTREEITEM item;
NodeInfo *info;
HMENU treeMenu;
WORD x;
WORD y;
CComPtr<IShellFolder> pFolder;
CComPtr<IContextMenu> contextMenu;
HRESULT hr;
UINT uCommand;
LPITEMIDLIST pidlChild;
treeMenu = NULL;
item = TreeView_GetSelection(m_hWnd);
bHandled = TRUE;
if (!item)
{
goto Cleanup;
}
x = LOWORD(lParam);
y = HIWORD(lParam);
if (x == -1 && y == -1)
{
// TODO: grab position of tree item and position it correctly
}
info = GetNodeInfo(item);
if (!info)
{
ERR("No node data, something has gone wrong !\n");
goto Cleanup;
}
hr = SHBindToParent(info->absolutePidl, IID_PPV_ARG(IShellFolder, &pFolder),
(LPCITEMIDLIST*)&pidlChild);
if (!SUCCEEDED(hr))
{
ERR("Can't bind to folder!\n");
goto Cleanup;
}
hr = pFolder->GetUIObjectOf(m_hWnd, 1, (LPCITEMIDLIST*)&pidlChild, IID_IContextMenu,
NULL, reinterpret_cast<void**>(&contextMenu));
if (!SUCCEEDED(hr))
{
ERR("Can't get IContextMenu interface\n");
goto Cleanup;
}
IUnknown_SetSite(contextMenu, (IDeskBand *)this);
treeMenu = CreatePopupMenu();
hr = contextMenu->QueryContextMenu(treeMenu, 0, FCIDM_SHVIEWFIRST, FCIDM_SHVIEWLAST,
CMF_EXPLORE);
if (!SUCCEEDED(hr))
{
WARN("Can't get context menu for item\n");
DestroyMenu(treeMenu);
goto Cleanup;
}
uCommand = TrackPopupMenu(treeMenu, TPM_LEFTALIGN | TPM_RETURNCMD | TPM_LEFTBUTTON | TPM_RIGHTBUTTON,
x, y, 0, m_hWnd, NULL);
ExecuteCommand(contextMenu, uCommand);
Cleanup:
if (contextMenu)
IUnknown_SetSite(contextMenu, NULL);
if (treeMenu)
DestroyMenu(treeMenu);
m_bNavigating = TRUE;
TreeView_SelectItem(m_hWnd, m_oldSelected);
m_bNavigating = FALSE;
return TRUE;
}
LRESULT CExplorerBand::ContextMenuHack(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL &bHandled)
{
bHandled = FALSE;
if (uMsg == WM_RBUTTONDOWN)
{
TVHITTESTINFO info;
info.pt.x = LOWORD(lParam);
info.pt.y = HIWORD(lParam);
info.flags = TVHT_ONITEM;
info.hItem = NULL;
// Save the current location
m_oldSelected = TreeView_GetSelection(m_hWnd);
// Move to the item selected by the treeview (don't change right pane)
TreeView_HitTest(m_hWnd, &info);
m_bNavigating = TRUE;
TreeView_SelectItem(m_hWnd, info.hItem);
m_bNavigating = FALSE;
}
return FALSE; /* let the wndproc process the message */
}
LRESULT CExplorerBand::OnShellEvent(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL &bHandled)
{
LPITEMIDLIST *dest;
LPITEMIDLIST clean;
HTREEITEM pItem;
dest = (LPITEMIDLIST*)wParam;
/* TODO: handle shell notifications */
switch(lParam & ~SHCNE_INTERRUPT)
{
case SHCNE_MKDIR:
if (!SUCCEEDED(_ReparsePIDL(dest[0], &clean)))
{
ERR("Can't reparse PIDL to a valid one\n");
return FALSE;
}
NavigateToPIDL(clean, &pItem, FALSE, TRUE, FALSE);
ILFree(clean);
break;
case SHCNE_RMDIR:
DeleteItem(dest[0]);
break;
case SHCNE_RENAMEFOLDER:
if (!SUCCEEDED(_ReparsePIDL(dest[1], &clean)))
{
ERR("Can't reparse PIDL to a valid one\n");
return FALSE;
}
if (NavigateToPIDL(dest[0], &pItem, FALSE, FALSE, FALSE))
RenameItem(pItem, clean);
ILFree(clean);
break;
case SHCNE_UPDATEDIR:
// We don't take care of this message
TRACE("Directory updated\n");
break;
default:
TRACE("Unhandled message\n");
}
return TRUE;
}
LRESULT CExplorerBand::OnSetFocus(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL &bHandled)
{
m_bFocused = TRUE;
IUnknown_OnFocusChangeIS(m_pSite, reinterpret_cast<IUnknown*>(this), TRUE);
bHandled = FALSE;
return TRUE;
}
LRESULT CExplorerBand::OnKillFocus(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL &bHandled)
{
IUnknown_OnFocusChangeIS(m_pSite, reinterpret_cast<IUnknown*>(this), FALSE);
bHandled = FALSE;
return TRUE;
}
// *** Helper functions ***
HTREEITEM CExplorerBand::InsertItem(HTREEITEM hParent, IShellFolder *psfParent, LPITEMIDLIST pElt, LPITEMIDLIST pEltRelative, BOOL bSort)
{
TV_INSERTSTRUCT tvInsert;
HTREEITEM htiCreated;
/* Get the attributes of the node */
SFGAOF attrs = SFGAO_STREAM | SFGAO_HASSUBFOLDER;
HRESULT hr = psfParent->GetAttributesOf(1, &pEltRelative, &attrs);
if (FAILED_UNEXPECTEDLY(hr))
return NULL;
/* Ignore streams */
if ((attrs & SFGAO_STREAM))
{
TRACE("Ignoring stream\n");
return NULL;
}
/* Get the name of the node */
WCHAR wszDisplayName[MAX_PATH];
STRRET strret;
hr = psfParent->GetDisplayNameOf(pEltRelative, SHGDN_INFOLDER, &strret);
if (FAILED_UNEXPECTEDLY(hr))
return NULL;
hr = StrRetToBufW(&strret, pEltRelative, wszDisplayName, MAX_PATH);
if (FAILED_UNEXPECTEDLY(hr))
return NULL;
/* Get the icon of the node */
INT iIcon = SHMapPIDLToSystemImageListIndex(psfParent, pEltRelative, NULL);
NodeInfo* pChildInfo = new NodeInfo;
if (!pChildInfo)
{
ERR("Failed to allocate NodeInfo\n");
return FALSE;
}
// Store our node info
pChildInfo->absolutePidl = ILClone(pElt);
pChildInfo->relativePidl = ILClone(pEltRelative);
pChildInfo->expanded = FALSE;
// Set up our treeview template
tvInsert.hParent = hParent;
tvInsert.hInsertAfter = TVI_LAST;
tvInsert.item.mask = TVIF_PARAM | TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_CHILDREN;
tvInsert.item.cchTextMax = MAX_PATH;
tvInsert.item.pszText = wszDisplayName;
tvInsert.item.iImage = tvInsert.item.iSelectedImage = iIcon;
tvInsert.item.cChildren = (attrs & SFGAO_HASSUBFOLDER) ? 1 : 0;
tvInsert.item.lParam = (LPARAM)pChildInfo;
htiCreated = TreeView_InsertItem(m_hWnd, &tvInsert);
if (bSort)
{
TVSORTCB sortCallback;
sortCallback.hParent = hParent;
sortCallback.lpfnCompare = CompareTreeItems;
sortCallback.lParam = (LPARAM)this;
SendMessage(TVM_SORTCHILDRENCB, 0, (LPARAM)&sortCallback);
}
return htiCreated;
}
/* This is the slow version of the above method */
HTREEITEM CExplorerBand::InsertItem(HTREEITEM hParent, LPITEMIDLIST pElt, LPITEMIDLIST pEltRelative, BOOL bSort)
{
CComPtr<IShellFolder> psfFolder;
HRESULT hr = SHBindToParent(pElt, IID_PPV_ARG(IShellFolder, &psfFolder), NULL);
if (FAILED_UNEXPECTEDLY(hr))
return NULL;
return InsertItem(hParent, psfFolder, pElt, pEltRelative, bSort);
}
BOOL CExplorerBand::InsertSubitems(HTREEITEM hItem, NodeInfo *pNodeInfo)
{
CComPtr<IEnumIDList> pEnumIDList;
LPITEMIDLIST pidlSub;
LPITEMIDLIST entry;
SHCONTF EnumFlags;
HRESULT hr;
ULONG fetched;
ULONG uItemCount;
CComPtr<IShellFolder> pFolder;
TVSORTCB sortCallback;
entry = pNodeInfo->absolutePidl;
fetched = 1;
uItemCount = 0;
EnumFlags = SHCONTF_FOLDERS;
hr = SHGetFolderLocation(m_hWnd, CSIDL_DESKTOP, NULL, 0, &pidlSub);
if (!SUCCEEDED(hr))
{
ERR("Can't get desktop PIDL !\n");
return FALSE;
}
if (!m_pDesktop->CompareIDs(NULL, pidlSub, entry))
{
// We are the desktop, so use pDesktop as pFolder
pFolder = m_pDesktop;
}
else
{
// Get an IShellFolder of our pidl
hr = m_pDesktop->BindToObject(entry, NULL, IID_PPV_ARG(IShellFolder, &pFolder));
if (!SUCCEEDED(hr))
{
ILFree(pidlSub);
ERR("Can't bind folder to desktop !\n");
return FALSE;
}
}
ILFree(pidlSub);
// TODO: handle hidden folders according to settings !
EnumFlags |= SHCONTF_INCLUDEHIDDEN;
// Enum through objects
hr = pFolder->EnumObjects(NULL,EnumFlags,&pEnumIDList);
// avoid broken IShellFolder implementations that return null pointer with success
if (!SUCCEEDED(hr) || !pEnumIDList)
{
ERR("Can't enum the folder !\n");
return FALSE;
}
/* Don't redraw while we add stuff into the tree */
SendMessage(WM_SETREDRAW, FALSE, 0);
while(SUCCEEDED(pEnumIDList->Next(1, &pidlSub, &fetched)) && pidlSub && fetched)
{
LPITEMIDLIST pidlSubComplete;
pidlSubComplete = ILCombine(entry, pidlSub);
if (InsertItem(hItem, pFolder, pidlSubComplete, pidlSub, FALSE))
uItemCount++;
ILFree(pidlSubComplete);
ILFree(pidlSub);
}
pNodeInfo->expanded = TRUE;
/* Let's do sorting */
sortCallback.hParent = hItem;
sortCallback.lpfnCompare = CompareTreeItems;
sortCallback.lParam = (LPARAM)this;
SendMessage(TVM_SORTCHILDRENCB, 0, (LPARAM)&sortCallback);
/* Now we can redraw */
SendMessage(WM_SETREDRAW, TRUE, 0);
return (uItemCount > 0) ? TRUE : FALSE;
}
/**
* Navigate to a given PIDL in the treeview, and return matching tree item handle
* - dest: The absolute PIDL we should navigate in the treeview
* - item: Handle of the tree item matching the PIDL
* - bExpand: expand collapsed nodes in order to find the right element
* - bInsert: insert the element at the right place if we don't find it
* - bSelect: select the item after we found it
*/
BOOL CExplorerBand::NavigateToPIDL(LPITEMIDLIST dest, HTREEITEM *item, BOOL bExpand, BOOL bInsert,
BOOL bSelect)
{
HTREEITEM current;
HTREEITEM tmp;
HTREEITEM parent;
BOOL found;
NodeInfo *nodeData;
LPITEMIDLIST relativeChild;
TVITEM tvItem;
if (!item)
return FALSE;
found = FALSE;
current = m_hRoot;
parent = NULL;
while(!found)
{
nodeData = GetNodeInfo(current);
if (!nodeData)
{
ERR("Something has gone wrong, no data associated to node !\n");
*item = NULL;
return FALSE;
}
// If we found our node, give it back
if (!m_pDesktop->CompareIDs(0, nodeData->absolutePidl, dest))
{
if (bSelect)
TreeView_SelectItem(m_hWnd, current);
*item = current;
return TRUE;
}
// Check if we are a parent of the requested item
relativeChild = ILFindChild(nodeData->absolutePidl, dest);
if (relativeChild != 0)
{
// Notify treeview we have children
tvItem.mask = TVIF_CHILDREN;
tvItem.hItem = current;
tvItem.cChildren = 1;
TreeView_SetItem(m_hWnd, &tvItem);
// If we can expand and the node isn't expanded yet, do it
if (bExpand)
{
if (!nodeData->expanded)
InsertSubitems(current, nodeData);
TreeView_Expand(m_hWnd, current, TVE_EXPAND);
}
// Try to get a child
tmp = TreeView_GetChild(m_hWnd, current);
if (tmp)
{
// We have a child, let's continue with it
parent = current;
current = tmp;
continue;
}
if (bInsert && nodeData->expanded)
{
// Happens when we have to create a subchild inside a child
current = InsertItem(current, dest, relativeChild, TRUE);
}
// We end up here, without any children, so we found nothing
// Tell the parent node it has children
ZeroMemory(&tvItem, sizeof(tvItem));
*item = NULL;
return FALSE;
}
// Find sibling
tmp = TreeView_GetNextSibling(m_hWnd, current);
if (tmp)
{
current = tmp;
continue;
}
if (bInsert)
{
current = InsertItem(parent, dest, ILFindLastID(dest), TRUE);
*item = current;
return TRUE;
}
*item = NULL;
return FALSE;
}
return FALSE;
}
BOOL CExplorerBand::NavigateToCurrentFolder()
{
LPITEMIDLIST explorerPidl;
CComPtr<IBrowserService> pBrowserService;
HRESULT hr;
HTREEITEM dummy;
BOOL result;
explorerPidl = NULL;
hr = IUnknown_QueryService(m_pSite, SID_STopLevelBrowser, IID_PPV_ARG(IBrowserService, &pBrowserService));
if (!SUCCEEDED(hr))
{
ERR("Can't get IBrowserService !\n");
return FALSE;
}
hr = pBrowserService->GetPidl(&explorerPidl);
if (!SUCCEEDED(hr) || !explorerPidl)
{
ERR("Unable to get browser PIDL !\n");
return FALSE;
}
m_bNavigating = TRUE;
/* find PIDL into our explorer */
result = NavigateToPIDL(explorerPidl, &dummy, TRUE, FALSE, TRUE);
m_bNavigating = FALSE;
return result;
}
BOOL CExplorerBand::DeleteItem(LPITEMIDLIST idl)
{
HTREEITEM toDelete;
TVITEM tvItem;
HTREEITEM parentNode;
if (!NavigateToPIDL(idl, &toDelete, FALSE, FALSE, FALSE))
return FALSE;
// TODO: check that the treeview item is really deleted
parentNode = TreeView_GetParent(m_hWnd, toDelete);
// Navigate to parent when deleting child item
if (!m_pDesktop->CompareIDs(0, idl, m_pidlCurrent))
{
TreeView_SelectItem(m_hWnd, parentNode);
}
// Remove the child item
TreeView_DeleteItem(m_hWnd, toDelete);
// Probe parent to see if it has children
if (!TreeView_GetChild(m_hWnd, parentNode))
{
// Decrement parent's child count
ZeroMemory(&tvItem, sizeof(tvItem));
tvItem.mask = TVIF_CHILDREN;
tvItem.hItem = parentNode;
tvItem.cChildren = 0;
TreeView_SetItem(m_hWnd, &tvItem);
}
return TRUE;
}
BOOL CExplorerBand::RenameItem(HTREEITEM toRename, LPITEMIDLIST newPidl)
{
WCHAR wszDisplayName[MAX_PATH];
TVITEM itemInfo;
LPCITEMIDLIST relPidl;
NodeInfo *treeInfo;
TVSORTCB sortCallback;
HTREEITEM child;
ZeroMemory(&itemInfo, sizeof(itemInfo));
itemInfo.mask = TVIF_PARAM;
itemInfo.hItem = toRename;
// Change PIDL associated to the item
relPidl = ILFindLastID(newPidl);
TreeView_GetItem(m_hWnd, &itemInfo);
if (!itemInfo.lParam)
{
ERR("Unable to fetch lParam\n");
return FALSE;
}
SendMessage(WM_SETREDRAW, FALSE, 0);
treeInfo = (NodeInfo*)itemInfo.lParam;
ILFree(treeInfo->absolutePidl);
ILFree(treeInfo->relativePidl);
treeInfo->absolutePidl = ILClone(newPidl);
treeInfo->relativePidl = ILClone(relPidl);
// Change the display name
GetDisplayName(newPidl, wszDisplayName, MAX_PATH, SHGDN_INFOLDER);
ZeroMemory(&itemInfo, sizeof(itemInfo));
itemInfo.hItem = toRename;
itemInfo.mask = TVIF_TEXT;
itemInfo.pszText = wszDisplayName;
TreeView_SetItem(m_hWnd, &itemInfo);
if((child = TreeView_GetChild(m_hWnd, toRename)) != NULL)
{
RefreshTreePidl(child, newPidl);
}
// Sorting
sortCallback.hParent = TreeView_GetParent(m_hWnd, toRename);
sortCallback.lpfnCompare = CompareTreeItems;
sortCallback.lParam = (LPARAM)this;
SendMessage(TVM_SORTCHILDRENCB, 0, (LPARAM)&sortCallback);
SendMessage(WM_SETREDRAW, TRUE, 0);
return TRUE;
}
BOOL CExplorerBand::RefreshTreePidl(HTREEITEM tree, LPITEMIDLIST pidlParent)
{
HTREEITEM tmp;
NodeInfo *pInfo;
// Update our node data
pInfo = GetNodeInfo(tree);
if (!pInfo)
{
WARN("No tree info !\n");
return FALSE;
}
ILFree(pInfo->absolutePidl);
pInfo->absolutePidl = ILCombine(pidlParent, pInfo->relativePidl);
if (!pInfo->absolutePidl)
{
WARN("PIDL allocation failed\n");
return FALSE;
}
// Recursively update children
if ((tmp = TreeView_GetChild(m_hWnd, tree)) != NULL)
{
RefreshTreePidl(tmp, pInfo->absolutePidl);
}
tmp = TreeView_GetNextSibling(m_hWnd, tree);
while(tmp != NULL)
{
pInfo = GetNodeInfo(tmp);
if(!pInfo)
{
WARN("No tree info !\n");
continue;
}
ILFree(pInfo->absolutePidl);
pInfo->absolutePidl = ILCombine(pidlParent, pInfo->relativePidl);
tmp = TreeView_GetNextSibling(m_hWnd, tmp);
}
return TRUE;
}
// *** Tree item sorting callback ***
int CALLBACK CExplorerBand::CompareTreeItems(LPARAM p1, LPARAM p2, LPARAM p3)
{
/*
* We first sort drive letters (Path root), then PIDLs and then regular folder
* display name.
* This is not how Windows sorts item, but it gives decent results.
*/
NodeInfo *info1;
NodeInfo *info2;
CExplorerBand *pThis;
WCHAR wszFolder1[MAX_PATH];
WCHAR wszFolder2[MAX_PATH];
info1 = (NodeInfo*)p1;
info2 = (NodeInfo*)p2;
pThis = (CExplorerBand*)p3;
GetDisplayName(info1->absolutePidl, wszFolder1, MAX_PATH, SHGDN_FORPARSING);
GetDisplayName(info2->absolutePidl, wszFolder2, MAX_PATH, SHGDN_FORPARSING);
if (PathIsRoot(wszFolder1) && PathIsRoot(wszFolder2))
{
return lstrcmpiW(wszFolder1,wszFolder2);
}
if (PathIsRoot(wszFolder1) && !PathIsRoot(wszFolder2))
{
return -1;
}
if (!PathIsRoot(wszFolder1) && PathIsRoot(wszFolder2))
{
return 1;
}
// Now, we compare non-root folders, grab display name
GetDisplayName(info1->absolutePidl, wszFolder1, MAX_PATH, SHGDN_INFOLDER);
GetDisplayName(info2->absolutePidl, wszFolder2, MAX_PATH, SHGDN_INFOLDER);
if (_ILIsSpecialFolder(info1->relativePidl) && !_ILIsSpecialFolder(info2->relativePidl))
{
return -1;
}
if (!_ILIsSpecialFolder(info1->relativePidl) && _ILIsSpecialFolder(info2->relativePidl))
{
return 1;
}
if (_ILIsSpecialFolder(info1->relativePidl) && !_ILIsSpecialFolder(info2->relativePidl))
{
HRESULT hr;
hr = pThis->m_pDesktop->CompareIDs(0, info1->absolutePidl, info2->absolutePidl);
if (!hr) return 0;
return (hr > 0) ? -1 : 1;
}
return StrCmpLogicalW(wszFolder1, wszFolder2);
}
// *** IOleWindow methods ***
HRESULT STDMETHODCALLTYPE CExplorerBand::GetWindow(HWND *lphwnd)
{
if (!lphwnd)
return E_INVALIDARG;
*lphwnd = m_hWnd;
return S_OK;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::ContextSensitiveHelp(BOOL fEnterMode)
{
UNIMPLEMENTED;
return E_NOTIMPL;
}
// *** IDockingWindow methods ***
HRESULT STDMETHODCALLTYPE CExplorerBand::CloseDW(DWORD dwReserved)
{
// We do nothing, we don't have anything to save yet
TRACE("CloseDW called\n");
return S_OK;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::ResizeBorderDW(const RECT *prcBorder, IUnknown *punkToolbarSite, BOOL fReserved)
{
/* Must return E_NOTIMPL according to MSDN */
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::ShowDW(BOOL fShow)
{
m_fVisible = fShow;
ShowWindow(fShow);
return S_OK;
}
// *** IDeskBand methods ***
HRESULT STDMETHODCALLTYPE CExplorerBand::GetBandInfo(DWORD dwBandID, DWORD dwViewMode, DESKBANDINFO *pdbi)
{
if (!pdbi)
{
return E_INVALIDARG;
}
this->m_dwBandID = dwBandID;
if (pdbi->dwMask & DBIM_MINSIZE)
{
pdbi->ptMinSize.x = 200;
pdbi->ptMinSize.y = 30;
}
if (pdbi->dwMask & DBIM_MAXSIZE)
{
pdbi->ptMaxSize.y = -1;
}
if (pdbi->dwMask & DBIM_INTEGRAL)
{
pdbi->ptIntegral.y = 1;
}
if (pdbi->dwMask & DBIM_ACTUAL)
{
pdbi->ptActual.x = 200;
pdbi->ptActual.y = 30;
}
if (pdbi->dwMask & DBIM_TITLE)
{
if (!LoadStringW(_AtlBaseModule.GetResourceInstance(), IDS_FOLDERSLABEL, pdbi->wszTitle, _countof(pdbi->wszTitle)))
return HRESULT_FROM_WIN32(GetLastError());
}
if (pdbi->dwMask & DBIM_MODEFLAGS)
{
pdbi->dwModeFlags = DBIMF_NORMAL | DBIMF_VARIABLEHEIGHT;
}
if (pdbi->dwMask & DBIM_BKCOLOR)
{
pdbi->dwMask &= ~DBIM_BKCOLOR;
}
return S_OK;
}
// *** IObjectWithSite methods ***
HRESULT STDMETHODCALLTYPE CExplorerBand::SetSite(IUnknown *pUnkSite)
{
HRESULT hr;
HWND parentWnd;
if (pUnkSite == m_pSite)
return S_OK;
TRACE("SetSite called \n");
if (!pUnkSite)
{
DestroyExplorerBand();
DestroyWindow();
m_hWnd = NULL;
}
if (pUnkSite != m_pSite)
{
m_pSite = NULL;
}
if(!pUnkSite)
return S_OK;
hr = IUnknown_GetWindow(pUnkSite, &parentWnd);
if (!SUCCEEDED(hr))
{
ERR("Could not get parent's window ! Status: %08lx\n", hr);
return E_INVALIDARG;
}
m_pSite = pUnkSite;
if (m_hWnd)
{
// Change its parent
SetParent(parentWnd);
}
else
{
HWND wnd = CreateWindow(WC_TREEVIEW, NULL,
WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS | TVS_HASLINES | TVS_HASBUTTONS | TVS_SHOWSELALWAYS | TVS_EDITLABELS /* | TVS_SINGLEEXPAND*/ , // remove TVS_SINGLEEXPAND for now since it has strange behaviour
0, 0, 0, 0, parentWnd, NULL, _AtlBaseModule.GetModuleInstance(), NULL);
// Subclass the window
SubclassWindow(wnd);
// Initialize our treeview now
InitializeExplorerBand();
RegisterDragDrop(m_hWnd, dynamic_cast<IDropTarget*>(this));
}
return S_OK;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::GetSite(REFIID riid, void **ppvSite)
{
if (!ppvSite)
return E_POINTER;
*ppvSite = m_pSite;
return S_OK;
}
// *** IOleCommandTarget methods ***
HRESULT STDMETHODCALLTYPE CExplorerBand::QueryStatus(const GUID *pguidCmdGroup, ULONG cCmds, OLECMD prgCmds [], OLECMDTEXT *pCmdText)
{
UNIMPLEMENTED;
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::Exec(const GUID *pguidCmdGroup, DWORD nCmdID, DWORD nCmdexecopt, VARIANT *pvaIn, VARIANT *pvaOut)
{
UNIMPLEMENTED;
return E_NOTIMPL;
}
// *** IServiceProvider methods ***
HRESULT STDMETHODCALLTYPE CExplorerBand::QueryService(REFGUID guidService, REFIID riid, void **ppvObject)
{
/* FIXME: we probably want to handle more services here */
return IUnknown_QueryService(m_pSite, SID_SShellBrowser, riid, ppvObject);
}
// *** IInputObject methods ***
HRESULT STDMETHODCALLTYPE CExplorerBand::UIActivateIO(BOOL fActivate, LPMSG lpMsg)
{
if (fActivate)
{
//SetFocus();
SetActiveWindow();
}
// TODO: handle message
if(lpMsg)
{
TranslateMessage(lpMsg);
DispatchMessage(lpMsg);
}
return S_OK;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::HasFocusIO()
{
return m_bFocused ? S_OK : S_FALSE;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::TranslateAcceleratorIO(LPMSG lpMsg)
{
if (lpMsg->hwnd == m_hWnd)
{
TranslateMessage(lpMsg);
DispatchMessage(lpMsg);
return S_OK;
}
return S_FALSE;
}
// *** IPersist methods ***
HRESULT STDMETHODCALLTYPE CExplorerBand::GetClassID(CLSID *pClassID)
{
if (!pClassID)
return E_POINTER;
memcpy(pClassID, &CLSID_ExplorerBand, sizeof(CLSID));
return S_OK;
}
// *** IPersistStream methods ***
HRESULT STDMETHODCALLTYPE CExplorerBand::IsDirty()
{
UNIMPLEMENTED;
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::Load(IStream *pStm)
{
UNIMPLEMENTED;
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::Save(IStream *pStm, BOOL fClearDirty)
{
UNIMPLEMENTED;
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::GetSizeMax(ULARGE_INTEGER *pcbSize)
{
// TODO: calculate max size
UNIMPLEMENTED;
return E_NOTIMPL;
}
// *** IWinEventHandler methods ***
HRESULT STDMETHODCALLTYPE CExplorerBand::OnWinEvent(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT *theResult)
{
BOOL bHandled;
LRESULT result;
if (uMsg == WM_NOTIFY)
{
NMHDR *pNotifyHeader = (NMHDR*)lParam;
switch (pNotifyHeader->code)
{
case TVN_ITEMEXPANDING:
result = OnTreeItemExpanding((LPNMTREEVIEW)lParam);
if (theResult)
*theResult = result;
break;
case TVN_SELCHANGED:
OnSelectionChanged((LPNMTREEVIEW)lParam);
break;
case TVN_DELETEITEM:
OnTreeItemDeleted((LPNMTREEVIEW)lParam);
break;
case NM_RCLICK:
OnContextMenu(WM_CONTEXTMENU, (WPARAM)m_hWnd, GetMessagePos(), bHandled);
if (theResult)
*theResult = 1;
break;
case TVN_BEGINDRAG:
case TVN_BEGINRDRAG:
OnTreeItemDragging((LPNMTREEVIEW)lParam, pNotifyHeader->code == TVN_BEGINRDRAG);
case TVN_BEGINLABELEDITW:
{
// TODO: put this in a function ? (mostly copypasta from CDefView)
DWORD dwAttr = SFGAO_CANRENAME;
LPNMTVDISPINFO dispInfo = (LPNMTVDISPINFO)lParam;
CComPtr<IShellFolder> pParent;
LPCITEMIDLIST pChild;
HRESULT hr;
if (theResult)
*theResult = 1;
NodeInfo *info = GetNodeInfo(dispInfo->item.hItem);
if (!info)
return E_FAIL;
hr = SHBindToParent(info->absolutePidl, IID_PPV_ARG(IShellFolder, &pParent), &pChild);
if (!SUCCEEDED(hr) || !pParent.p)
return E_FAIL;
hr = pParent->GetAttributesOf(1, &pChild, &dwAttr);
if (SUCCEEDED(hr) && (dwAttr & SFGAO_CANRENAME) && theResult)
*theResult = 0;
return S_OK;
}
case TVN_ENDLABELEDITW:
{
LPNMTVDISPINFO dispInfo = (LPNMTVDISPINFO)lParam;
NodeInfo *info = GetNodeInfo(dispInfo->item.hItem);
HRESULT hr;
if (theResult)
*theResult = 0;
if (dispInfo->item.pszText)
{
LPITEMIDLIST pidlNew;
CComPtr<IShellFolder> pParent;
LPCITEMIDLIST pidlChild;
hr = SHBindToParent(info->absolutePidl, IID_PPV_ARG(IShellFolder, &pParent), &pidlChild);
if (!SUCCEEDED(hr) || !pParent.p)
return E_FAIL;
hr = pParent->SetNameOf(0, pidlChild, dispInfo->item.pszText, SHGDN_INFOLDER, &pidlNew);
if(SUCCEEDED(hr) && pidlNew)
{
CComPtr<IPersistFolder2> pPersist;
LPITEMIDLIST pidlParent, pidlNewAbs;
hr = pParent->QueryInterface(IID_PPV_ARG(IPersistFolder2, &pPersist));
if(!SUCCEEDED(hr))
return E_FAIL;
hr = pPersist->GetCurFolder(&pidlParent);
if(!SUCCEEDED(hr))
return E_FAIL;
pidlNewAbs = ILCombine(pidlParent, pidlNew);
// Navigate to our new location
UpdateBrowser(pidlNewAbs);
ILFree(pidlParent);
ILFree(pidlNewAbs);
ILFree(pidlNew);
if (theResult)
*theResult = 1;
}
return S_OK;
}
}
default:
break;
}
}
return S_OK;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::IsWindowOwner(HWND hWnd)
{
return (hWnd == m_hWnd) ? S_OK : S_FALSE;
}
// *** IBandNavigate methods ***
HRESULT STDMETHODCALLTYPE CExplorerBand::Select(long paramC)
{
UNIMPLEMENTED;
return E_NOTIMPL;
}
// *** INamespaceProxy ***
HRESULT STDMETHODCALLTYPE CExplorerBand::GetNavigateTarget(long paramC, long param10, long param14)
{
UNIMPLEMENTED;
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::Invoke(long paramC)
{
UNIMPLEMENTED;
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::OnSelectionChanged(long paramC)
{
UNIMPLEMENTED;
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::RefreshFlags(long paramC, long param10, long param14)
{
UNIMPLEMENTED;
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::CacheItem(long paramC)
{
UNIMPLEMENTED;
return E_NOTIMPL;
}
// *** IDispatch methods ***
HRESULT STDMETHODCALLTYPE CExplorerBand::GetTypeInfoCount(UINT *pctinfo)
{
UNIMPLEMENTED;
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::GetTypeInfo(UINT iTInfo, LCID lcid, ITypeInfo **ppTInfo)
{
UNIMPLEMENTED;
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::GetIDsOfNames(REFIID riid, LPOLESTR *rgszNames, UINT cNames, LCID lcid, DISPID *rgDispId)
{
UNIMPLEMENTED;
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::Invoke(DISPID dispIdMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS *pDispParams, VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr)
{
switch (dispIdMember)
{
case DISPID_DOWNLOADCOMPLETE:
case DISPID_NAVIGATECOMPLETE2:
TRACE("DISPID_NAVIGATECOMPLETE2 received\n");
NavigateToCurrentFolder();
return S_OK;
}
TRACE("Unknown dispid requested: %08x\n", dispIdMember);
return E_INVALIDARG;
}
// *** IDropTarget methods ***
HRESULT STDMETHODCALLTYPE CExplorerBand::DragEnter(IDataObject *pObj, DWORD glfKeyState, POINTL pt, DWORD *pdwEffect)
{
ERR("Entering drag\n");
m_pCurObject = pObj;
m_oldSelected = TreeView_GetSelection(m_hWnd);
return DragOver(glfKeyState, pt, pdwEffect);
}
HRESULT STDMETHODCALLTYPE CExplorerBand::DragOver(DWORD glfKeyState, POINTL pt, DWORD *pdwEffect)
{
TVHITTESTINFO info;
CComPtr<IShellFolder> pShellFldr;
NodeInfo *nodeInfo;
//LPCITEMIDLIST pChild;
HRESULT hr;
info.pt.x = pt.x;
info.pt.y = pt.y;
info.flags = TVHT_ONITEM;
info.hItem = NULL;
ScreenToClient(&info.pt);
// Move to the item selected by the treeview (don't change right pane)
TreeView_HitTest(m_hWnd, &info);
if (info.hItem)
{
m_bNavigating = TRUE;
TreeView_SelectItem(m_hWnd, info.hItem);
m_bNavigating = FALSE;
// Delegate to shell folder
if (m_pDropTarget && info.hItem != m_childTargetNode)
{
m_pDropTarget = NULL;
}
if (info.hItem != m_childTargetNode)
{
nodeInfo = GetNodeInfo(info.hItem);
if (!nodeInfo)
return E_FAIL;
#if 0
hr = SHBindToParent(nodeInfo->absolutePidl, IID_PPV_ARG(IShellFolder, &pShellFldr), &pChild);
if (!SUCCEEDED(hr))
return E_FAIL;
hr = pShellFldr->GetUIObjectOf(m_hWnd, 1, &pChild, IID_IDropTarget, NULL, reinterpret_cast<void**>(&pDropTarget));
if (!SUCCEEDED(hr))
return E_FAIL;
#endif
if(_ILIsDesktop(nodeInfo->absolutePidl))
pShellFldr = m_pDesktop;
else
{
hr = m_pDesktop->BindToObject(nodeInfo->absolutePidl, 0, IID_PPV_ARG(IShellFolder, &pShellFldr));
if (!SUCCEEDED(hr))
{
/* Don't allow dnd since we couldn't get our folder object */
ERR("Can't bind to folder object\n");
*pdwEffect = DROPEFFECT_NONE;
return E_FAIL;
}
}
hr = pShellFldr->CreateViewObject(m_hWnd, IID_PPV_ARG(IDropTarget, &m_pDropTarget));
if (!SUCCEEDED(hr))
{
/* Don't allow dnd since we couldn't get our drop target */
ERR("Can't get drop target for folder object\n");
*pdwEffect = DROPEFFECT_NONE;
return E_FAIL;
}
hr = m_pDropTarget->DragEnter(m_pCurObject, glfKeyState, pt, pdwEffect);
m_childTargetNode = info.hItem;
}
if (m_pDropTarget)
{
hr = m_pDropTarget->DragOver(glfKeyState, pt, pdwEffect);
}
}
else
{
m_childTargetNode = NULL;
m_pDropTarget = NULL;
*pdwEffect = DROPEFFECT_NONE;
}
return S_OK;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::DragLeave()
{
m_bNavigating = TRUE;
TreeView_SelectItem(m_hWnd, m_oldSelected);
m_bNavigating = FALSE;
m_childTargetNode = NULL;
if (m_pCurObject)
{
m_pCurObject = NULL;
}
return S_OK;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::Drop(IDataObject *pObj, DWORD glfKeyState, POINTL pt, DWORD *pdwEffect)
{
if (!m_pDropTarget)
return E_FAIL;
m_pDropTarget->Drop(pObj, glfKeyState, pt, pdwEffect);
DragLeave();
return S_OK;
}
// *** IDropSource methods ***
HRESULT STDMETHODCALLTYPE CExplorerBand::QueryContinueDrag(BOOL fEscapePressed, DWORD grfKeyState)
{
if (fEscapePressed)
return DRAGDROP_S_CANCEL;
if ((grfKeyState & MK_LBUTTON) || (grfKeyState & MK_RBUTTON))
return S_OK;
return DRAGDROP_S_DROP;
}
HRESULT STDMETHODCALLTYPE CExplorerBand::GiveFeedback(DWORD dwEffect)
{
return DRAGDROP_S_USEDEFAULTCURSORS;
}
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