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ShellTreeView.cpp
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ShellTreeView.cpp
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// Copyright (C) Explorer++ Project
// SPDX-License-Identifier: GPL-3.0-only
// See LICENSE in the top level directory
/*
* Wraps a treeview control. Specifically handles
* adding directories to it and selecting directories.
* Each non-network drive in the system is also
* monitored for changes.
*
* Notes:
* - All items are sorted alphabetically, except for:
* - Items on the desktop
* - Items in My Computer
*/
#include "stdafx.h"
#include "ShellTreeView.h"
#include "Config.h"
#include "CoreInterface.h"
#include "DarkModeHelper.h"
#include "TabContainer.h"
#include "../Helper/CachedIcons.h"
#include "../Helper/ClipboardHelper.h"
#include "../Helper/Controls.h"
#include "../Helper/DragDropHelper.h"
#include "../Helper/DriveInfo.h"
#include "../Helper/FileActionHandler.h"
#include "../Helper/FileOperations.h"
#include "../Helper/Helper.h"
#include "../Helper/Macros.h"
#include "../Helper/ShellHelper.h"
#include <wil/common.h>
#include <propkey.h>
int CALLBACK CompareItemsStub(LPARAM lParam1, LPARAM lParam2, LPARAM lParamSort);
DWORD WINAPI Thread_MonitorAllDrives(LPVOID pParam);
ShellTreeView::ShellTreeView(HWND hParent, CoreInterface *coreInterface, IDirectoryMonitor *pDirMon,
TabContainer *tabContainer, FileActionHandler *fileActionHandler, CachedIcons *cachedIcons) :
ShellDropTargetWindow(CreateTreeView(hParent)),
m_hTreeView(GetHWND()),
m_config(coreInterface->GetConfig()),
m_pDirMon(pDirMon),
m_tabContainer(tabContainer),
m_fileActionHandler(fileActionHandler),
m_cachedIcons(cachedIcons),
m_itemIDCounter(0),
m_iconThreadPool(1, std::bind(CoInitializeEx, nullptr, COINIT_APARTMENTTHREADED),
CoUninitialize),
m_iconResultIDCounter(0),
m_subfoldersThreadPool(1, std::bind(CoInitializeEx, nullptr, COINIT_APARTMENTTHREADED),
CoUninitialize),
m_subfoldersResultIDCounter(0),
m_cutItem(nullptr),
m_dropExpandItem(nullptr)
{
auto &darkModeHelper = DarkModeHelper::GetInstance();
if (DarkModeHelper::GetInstance().IsDarkModeEnabled())
{
darkModeHelper.AllowDarkModeForWindow(m_hTreeView, true);
TreeView_SetBkColor(m_hTreeView, TREE_VIEW_DARK_MODE_BACKGROUND_COLOR);
TreeView_SetTextColor(m_hTreeView, DarkModeHelper::TEXT_COLOR);
InvalidateRect(m_hTreeView, nullptr, TRUE);
HWND tooltips = TreeView_GetToolTips(m_hTreeView);
darkModeHelper.AllowDarkModeForWindow(tooltips, true);
SetWindowTheme(tooltips, L"Explorer", nullptr);
}
SetWindowTheme(m_hTreeView, L"Explorer", nullptr);
m_windowSubclasses.push_back(std::make_unique<WindowSubclassWrapper>(m_hTreeView,
TreeViewProcStub, reinterpret_cast<DWORD_PTR>(this)));
m_windowSubclasses.push_back(std::make_unique<WindowSubclassWrapper>(hParent, ParentWndProcStub,
reinterpret_cast<DWORD_PTR>(this)));
InitializeCriticalSection(&m_cs);
m_iFolderIcon = GetDefaultFolderIconIndex();
m_bDragCancelled = FALSE;
m_bDragAllowed = FALSE;
m_bShowHidden = TRUE;
AddRoot();
m_getDragImageMessage = RegisterWindowMessage(DI_GETDRAGIMAGE);
m_bQueryRemoveCompleted = FALSE;
HANDLE hThread = CreateThread(nullptr, 0, Thread_MonitorAllDrives, this, 0, nullptr);
CloseHandle(hThread);
AddClipboardFormatListener(m_hTreeView);
m_connections.push_back(coreInterface->AddApplicationShuttingDownObserver(
std::bind_front(&ShellTreeView::OnApplicationShuttingDown, this)));
}
HWND ShellTreeView::CreateTreeView(HWND parent)
{
return ::CreateTreeView(parent,
WS_CHILD | WS_VISIBLE | TVS_SHOWSELALWAYS | TVS_HASBUTTONS | TVS_EDITLABELS | TVS_HASLINES
| TVS_TRACKSELECT);
}
ShellTreeView::~ShellTreeView()
{
DeleteCriticalSection(&m_cs);
m_iconThreadPool.clear_queue();
}
void ShellTreeView::OnApplicationShuttingDown()
{
if (m_clipboardDataObject && OleIsCurrentClipboard(m_clipboardDataObject.get()) == S_OK)
{
OleFlushClipboard();
}
}
LRESULT CALLBACK ShellTreeView::TreeViewProcStub(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam,
UINT_PTR uIdSubclass, DWORD_PTR dwRefData)
{
UNREFERENCED_PARAMETER(uIdSubclass);
auto *shellTreeView = reinterpret_cast<ShellTreeView *>(dwRefData);
return shellTreeView->TreeViewProc(hwnd, uMsg, wParam, lParam);
}
LRESULT CALLBACK ShellTreeView::TreeViewProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
if (m_getDragImageMessage != 0 && msg == m_getDragImageMessage)
{
return FALSE;
}
switch (msg)
{
case WM_TIMER:
if (wParam == DIRECTORY_MODIFIED_TIMER_ID)
{
DirectoryAltered();
}
else if (wParam == DROP_EXPAND_TIMER_ID)
{
OnDropExpandTimer();
}
break;
case WM_DEVICECHANGE:
return OnDeviceChange(wParam, lParam);
case WM_RBUTTONDOWN:
if ((wParam & MK_RBUTTON) && !(wParam & MK_LBUTTON) && !(wParam & MK_MBUTTON))
{
TVHITTESTINFO tvhti;
tvhti.pt.x = LOWORD(lParam);
tvhti.pt.y = HIWORD(lParam);
/* Test to see if the mouse click was
on an item or not. */
TreeView_HitTest(m_hTreeView, &tvhti);
if (!(tvhti.flags & LVHT_NOWHERE))
{
m_bDragAllowed = TRUE;
}
}
break;
case WM_RBUTTONUP:
m_bDragCancelled = FALSE;
m_bDragAllowed = FALSE;
break;
case WM_MBUTTONDOWN:
{
POINT pt;
POINTSTOPOINT(pt, MAKEPOINTS(lParam));
OnMiddleButtonDown(&pt);
}
break;
case WM_MBUTTONUP:
{
POINT pt;
POINTSTOPOINT(pt, MAKEPOINTS(lParam));
OnMiddleButtonUp(&pt, static_cast<UINT>(wParam));
}
break;
case WM_MOUSEMOVE:
{
if (!IsWithinDrag() && !m_bDragCancelled && m_bDragAllowed)
{
if ((wParam & MK_RBUTTON) && !(wParam & MK_LBUTTON) && !(wParam & MK_MBUTTON))
{
TVHITTESTINFO tvhti;
TVITEM tvItem;
POINT pt;
DWORD dwPos;
HRESULT hr;
BOOL bRet;
dwPos = GetMessagePos();
pt.x = GET_X_LPARAM(dwPos);
pt.y = GET_Y_LPARAM(dwPos);
MapWindowPoints(HWND_DESKTOP, m_hTreeView, &pt, 1);
tvhti.pt = pt;
/* Test to see if the mouse click was
on an item or not. */
TreeView_HitTest(m_hTreeView, &tvhti);
if (!(tvhti.flags & LVHT_NOWHERE))
{
tvItem.mask = TVIF_PARAM | TVIF_HANDLE;
tvItem.hItem = tvhti.hItem;
bRet = TreeView_GetItem(m_hTreeView, &tvItem);
if (bRet)
{
hr = OnBeginDrag((int) tvItem.lParam);
if (hr == DRAGDROP_S_CANCEL)
{
m_bDragCancelled = TRUE;
}
}
}
}
}
}
break;
case WM_CLIPBOARDUPDATE:
OnClipboardUpdate();
return 0;
case WM_APP_ICON_RESULT_READY:
ProcessIconResult(static_cast<int>(wParam));
break;
case WM_APP_SUBFOLDERS_RESULT_READY:
ProcessSubfoldersResult(static_cast<int>(wParam));
break;
case WM_DESTROY:
RemoveClipboardFormatListener(m_hTreeView);
break;
}
return DefSubclassProc(hwnd, msg, wParam, lParam);
}
LRESULT CALLBACK ShellTreeView::ParentWndProcStub(HWND hwnd, UINT uMsg, WPARAM wParam,
LPARAM lParam, UINT_PTR uIdSubclass, DWORD_PTR dwRefData)
{
UNREFERENCED_PARAMETER(uIdSubclass);
auto *treeView = reinterpret_cast<ShellTreeView *>(dwRefData);
return treeView->ParentWndProc(hwnd, uMsg, wParam, lParam);
}
LRESULT CALLBACK ShellTreeView::ParentWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch (uMsg)
{
case WM_NOTIFY:
if (reinterpret_cast<LPNMHDR>(lParam)->hwndFrom == m_hTreeView)
{
switch (reinterpret_cast<LPNMHDR>(lParam)->code)
{
case TVN_BEGINDRAG:
{
auto *pnmTreeView = reinterpret_cast<NMTREEVIEW *>(lParam);
OnBeginDrag(static_cast<int>(pnmTreeView->itemNew.lParam));
}
break;
case TVN_GETDISPINFO:
OnGetDisplayInfo(reinterpret_cast<NMTVDISPINFO *>(lParam));
break;
case TVN_ITEMEXPANDING:
OnItemExpanding(reinterpret_cast<NMTREEVIEW *>(lParam));
break;
case TVN_KEYDOWN:
return OnKeyDown(reinterpret_cast<NMTVKEYDOWN *>(lParam));
case TVN_ENDLABELEDIT:
/* TODO: Should return the value from this function. Can't do it
at the moment, since the treeview looks items up by their label
when a directory modification event is received (meaning that if
the label changes, the lookup for the old file name will fail). */
OnEndLabelEdit(reinterpret_cast<NMTVDISPINFO *>(lParam));
break;
}
}
break;
}
return DefSubclassProc(hwnd, uMsg, wParam, lParam);
}
HTREEITEM ShellTreeView::AddRoot()
{
TreeView_DeleteAllItems(m_hTreeView);
unique_pidl_absolute pidl;
HRESULT hr = GetRootPidl(wil::out_param(pidl));
if (FAILED(hr))
{
return nullptr;
}
std::wstring desktopDisplayName;
GetDisplayName(pidl.get(), SHGDN_INFOLDER, desktopDisplayName);
int itemId = GenerateUniqueItemId();
m_itemInfoMap[itemId].pidl.reset(ILCloneFull(pidl.get()));
TVITEMEX tvItem;
tvItem.mask = TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_PARAM | TVIF_CHILDREN;
tvItem.pszText = desktopDisplayName.data();
tvItem.iImage = I_IMAGECALLBACK;
tvItem.iSelectedImage = I_IMAGECALLBACK;
tvItem.cChildren = 1;
tvItem.lParam = itemId;
TVINSERTSTRUCT tvis;
tvis.hParent = nullptr;
tvis.hInsertAfter = TVI_LAST;
tvis.itemex = tvItem;
auto hDesktop = TreeView_InsertItem(m_hTreeView, &tvis);
if (hDesktop != nullptr)
{
SendMessage(m_hTreeView, TVM_EXPAND, TVE_EXPAND, reinterpret_cast<LPARAM>(hDesktop));
}
return hDesktop;
}
void ShellTreeView::OnGetDisplayInfo(NMTVDISPINFO *pnmtvdi)
{
TVITEM *ptvItem = &pnmtvdi->item;
if (WI_IsFlagSet(ptvItem->mask, TVIF_IMAGE))
{
const ItemInfo_t &itemInfo = m_itemInfoMap.at(static_cast<int>(ptvItem->lParam));
auto cachedIconIndex = GetCachedIconIndex(itemInfo);
if (cachedIconIndex)
{
ptvItem->iImage = (*cachedIconIndex & 0x0FFF);
ptvItem->iSelectedImage = (*cachedIconIndex & 0x0FFF);
}
else
{
ptvItem->iImage = m_iFolderIcon;
ptvItem->iSelectedImage = m_iFolderIcon;
}
QueueIconTask(ptvItem->hItem, static_cast<int>(ptvItem->lParam));
}
if (WI_IsFlagSet(ptvItem->mask, TVIF_CHILDREN))
{
ptvItem->cChildren = 1;
QueueSubfoldersTask(ptvItem->hItem);
}
ptvItem->mask |= TVIF_DI_SETITEM;
}
std::optional<int> ShellTreeView::GetCachedIconIndex(const ItemInfo_t &itemInfo)
{
std::wstring filePath;
HRESULT hr = GetDisplayName(itemInfo.pidl.get(), SHGDN_FORPARSING, filePath);
if (FAILED(hr))
{
return std::nullopt;
}
auto cachedItr = m_cachedIcons->findByPath(filePath);
if (cachedItr == m_cachedIcons->end())
{
return std::nullopt;
}
return cachedItr->iconIndex;
}
void ShellTreeView::QueueIconTask(HTREEITEM item, int internalIndex)
{
const ItemInfo_t &itemInfo = m_itemInfoMap.at(internalIndex);
BasicItemInfo basicItemInfo;
basicItemInfo.pidl.reset(ILCloneFull(itemInfo.pidl.get()));
int iconResultID = m_iconResultIDCounter++;
auto result = m_iconThreadPool.push(
[this, iconResultID, item, internalIndex, basicItemInfo](int id)
{
UNREFERENCED_PARAMETER(id);
return FindIconAsync(m_hTreeView, iconResultID, item, internalIndex,
basicItemInfo.pidl.get());
});
m_iconResults.insert({ iconResultID, std::move(result) });
}
std::optional<ShellTreeView::IconResult> ShellTreeView::FindIconAsync(HWND treeView,
int iconResultId, HTREEITEM item, int internalIndex, PCIDLIST_ABSOLUTE pidl)
{
SHFILEINFO shfi;
DWORD_PTR res = SHGetFileInfo(reinterpret_cast<LPCTSTR>(pidl), 0, &shfi, sizeof(SHFILEINFO),
SHGFI_PIDL | SHGFI_ICON | SHGFI_OVERLAYINDEX);
if (res == 0)
{
return std::nullopt;
}
DestroyIcon(shfi.hIcon);
PostMessage(treeView, WM_APP_ICON_RESULT_READY, iconResultId, 0);
IconResult result;
result.item = item;
result.internalIndex = internalIndex;
result.iconIndex = shfi.iIcon;
return result;
}
void ShellTreeView::ProcessIconResult(int iconResultId)
{
auto itr = m_iconResults.find(iconResultId);
if (itr == m_iconResults.end())
{
return;
}
auto cleanup = wil::scope_exit(
[this, itr]()
{
m_iconResults.erase(itr);
});
auto result = itr->second.get();
if (!result)
{
return;
}
const ItemInfo_t &itemInfo = m_itemInfoMap.at(result->internalIndex);
std::wstring filePath;
HRESULT hr = GetDisplayName(itemInfo.pidl.get(), SHGDN_FORPARSING, filePath);
if (SUCCEEDED(hr))
{
m_cachedIcons->addOrUpdateFileIcon(filePath, result->iconIndex);
}
TVITEM tvItem;
tvItem.mask = TVIF_HANDLE | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_STATE;
tvItem.hItem = result->item;
tvItem.iImage = result->iconIndex;
tvItem.iSelectedImage = result->iconIndex;
tvItem.stateMask = TVIS_OVERLAYMASK;
tvItem.state = INDEXTOOVERLAYMASK(result->iconIndex >> 24);
TreeView_SetItem(m_hTreeView, &tvItem);
}
void ShellTreeView::QueueSubfoldersTask(HTREEITEM item)
{
BasicItemInfo basicItemInfo;
basicItemInfo.pidl = GetItemPidl(item);
int subfoldersResultID = m_subfoldersResultIDCounter++;
auto result = m_subfoldersThreadPool.push(
[this, subfoldersResultID, item, basicItemInfo](int id)
{
UNREFERENCED_PARAMETER(id);
return CheckSubfoldersAsync(m_hTreeView, subfoldersResultID, item,
basicItemInfo.pidl.get());
});
m_subfoldersResults.insert({ subfoldersResultID, std::move(result) });
}
std::optional<ShellTreeView::SubfoldersResult> ShellTreeView::CheckSubfoldersAsync(HWND treeView,
int subfoldersResultId, HTREEITEM item, PCIDLIST_ABSOLUTE pidl)
{
wil::com_ptr_nothrow<IShellFolder> pShellFolder;
PCITEMID_CHILD pidlRelative;
HRESULT hr = SHBindToParent(pidl, IID_PPV_ARGS(&pShellFolder), &pidlRelative);
if (FAILED(hr))
{
return std::nullopt;
}
ULONG attributes = SFGAO_HASSUBFOLDER;
hr = pShellFolder->GetAttributesOf(1, &pidlRelative, &attributes);
if (FAILED(hr))
{
return std::nullopt;
}
PostMessage(treeView, WM_APP_SUBFOLDERS_RESULT_READY, subfoldersResultId, 0);
SubfoldersResult result;
result.item = item;
result.hasSubfolder = WI_IsFlagSet(attributes, SFGAO_HASSUBFOLDER);
return result;
}
void ShellTreeView::ProcessSubfoldersResult(int subfoldersResultId)
{
auto itr = m_subfoldersResults.find(subfoldersResultId);
if (itr == m_subfoldersResults.end())
{
return;
}
auto cleanup = wil::scope_exit(
[this, itr]()
{
m_subfoldersResults.erase(itr);
});
auto result = itr->second.get();
if (!result)
{
return;
}
if (result->hasSubfolder)
{
// By default it's assumed that an item has subfolders, so if it does
// actually have subfolders, there's nothing else that needs to be done.
return;
}
TVITEM tvItem;
tvItem.mask = TVIF_HANDLE | TVIF_CHILDREN;
tvItem.hItem = result->item;
tvItem.cChildren = 0;
TreeView_SetItem(m_hTreeView, &tvItem);
}
void ShellTreeView::OnItemExpanding(const NMTREEVIEW *nmtv)
{
HTREEITEM parentItem = nmtv->itemNew.hItem;
if (nmtv->action == TVE_EXPAND)
{
ExpandDirectory(parentItem);
}
else
{
auto hSelection = TreeView_GetSelection(m_hTreeView);
if (hSelection != nullptr)
{
HTREEITEM hItem = hSelection;
do
{
hItem = TreeView_GetParent(m_hTreeView, hItem);
} while (hItem != parentItem && hItem != nullptr);
// If the currently selected item is below the item being
// collapsed, the selection should be adjusted to the parent item.
if (hItem == parentItem)
{
TreeView_SelectItem(m_hTreeView, parentItem);
}
}
EraseItems(parentItem);
SendMessage(m_hTreeView, TVM_EXPAND, TVE_COLLAPSE | TVE_COLLAPSERESET,
reinterpret_cast<LPARAM>(parentItem));
}
}
LRESULT ShellTreeView::OnKeyDown(const NMTVKEYDOWN *keyDown)
{
switch (keyDown->wVKey)
{
case 'C':
if (IsKeyDown(VK_CONTROL) && !IsKeyDown(VK_SHIFT) && !IsKeyDown(VK_MENU))
{
CopySelectedItemToClipboard(true);
}
break;
case 'X':
if (IsKeyDown(VK_CONTROL) && !IsKeyDown(VK_SHIFT) && !IsKeyDown(VK_MENU))
{
CopySelectedItemToClipboard(false);
}
break;
case 'V':
if (IsKeyDown(VK_CONTROL) && !IsKeyDown(VK_SHIFT) && !IsKeyDown(VK_MENU))
{
Paste();
}
break;
case VK_DELETE:
if (IsKeyDown(VK_SHIFT))
{
DeleteSelectedItem(true);
}
else
{
DeleteSelectedItem(false);
}
break;
}
// If the ctrl key is down, this key sequence is likely a modifier. Stop any other pressed key
// from been used in an incremental search.
if (IsKeyDown(VK_CONTROL))
{
return 1;
}
return 0;
}
/* Sorts items in the following order:
- Drives
- Virtual Items
- Real Items
Each set is ordered alphabetically. */
int CALLBACK CompareItemsStub(LPARAM lParam1, LPARAM lParam2, LPARAM lParamSort)
{
ShellTreeView *shellTreeView = nullptr;
shellTreeView = (ShellTreeView *) lParamSort;
return shellTreeView->CompareItems(lParam1, lParam2);
}
int CALLBACK ShellTreeView::CompareItems(LPARAM lParam1, LPARAM lParam2)
{
TCHAR szTemp[MAX_PATH];
int iItemId1 = (int) lParam1;
int iItemId2 = (int) lParam2;
const ItemInfo_t &itemInfo1 = m_itemInfoMap.at(iItemId1);
const ItemInfo_t &itemInfo2 = m_itemInfoMap.at(iItemId2);
std::wstring displayName1;
GetDisplayName(itemInfo1.pidl.get(), SHGDN_FORPARSING, displayName1);
std::wstring displayName2;
GetDisplayName(itemInfo2.pidl.get(), SHGDN_FORPARSING, displayName2);
if (PathIsRoot(displayName1.c_str()) && !PathIsRoot(displayName2.c_str()))
{
return -1;
}
else if (!PathIsRoot(displayName1.c_str()) && PathIsRoot(displayName2.c_str()))
{
return 1;
}
else if (PathIsRoot(displayName1.c_str()) && PathIsRoot(displayName2.c_str()))
{
return lstrcmpi(displayName1.c_str(), displayName2.c_str());
}
else
{
if (!SHGetPathFromIDList(itemInfo1.pidl.get(), szTemp)
&& SHGetPathFromIDList(itemInfo2.pidl.get(), szTemp))
{
return -1;
}
else if (SHGetPathFromIDList(itemInfo1.pidl.get(), szTemp)
&& !SHGetPathFromIDList(itemInfo2.pidl.get(), szTemp))
{
return 1;
}
else
{
GetDisplayName(itemInfo1.pidl.get(), SHGDN_INFOLDER, displayName1);
GetDisplayName(itemInfo2.pidl.get(), SHGDN_INFOLDER, displayName2);
if (m_config->globalFolderSettings.useNaturalSortOrder)
{
return StrCmpLogicalW(displayName1.c_str(), displayName2.c_str());
}
else
{
return StrCmpIW(displayName1.c_str(), displayName2.c_str());
}
}
}
}
HRESULT ShellTreeView::ExpandDirectory(HTREEITEM hParent)
{
auto pidlDirectory = GetItemPidl(hParent);
wil::com_ptr_nothrow<IShellFolder2> shellFolder2;
HRESULT hr = BindToIdl(pidlDirectory.get(), IID_PPV_ARGS(&shellFolder2));
if (FAILED(hr))
{
return hr;
}
SHCONTF enumFlags = SHCONTF_FOLDERS;
if (m_bShowHidden)
{
enumFlags |= SHCONTF_INCLUDEHIDDEN | SHCONTF_INCLUDESUPERHIDDEN;
}
wil::com_ptr_nothrow<IEnumIDList> pEnumIDList;
hr = shellFolder2->EnumObjects(nullptr, enumFlags, &pEnumIDList);
if (FAILED(hr) || !pEnumIDList)
{
return hr;
}
SendMessage(m_hTreeView, WM_SETREDRAW, FALSE, 0);
std::vector<EnumeratedItem> items;
unique_pidl_child pidlItem;
ULONG uFetched = 1;
while (pEnumIDList->Next(1, wil::out_param(pidlItem), &uFetched) == S_OK && (uFetched == 1))
{
if (m_config->checkPinnedToNamespaceTreeProperty)
{
BOOL showItem = GetBooleanVariant(shellFolder2.get(), pidlItem.get(),
&PKEY_IsPinnedToNameSpaceTree, TRUE);
if (!showItem)
{
continue;
}
}
if (m_config->globalFolderSettings.hideSystemFiles)
{
PCITEMID_CHILD child = pidlItem.get();
SFGAOF attributes = SFGAO_SYSTEM;
hr = shellFolder2->GetAttributesOf(1, &child, &attributes);
if (FAILED(hr) || (WI_IsFlagSet(attributes, SFGAO_SYSTEM)))
{
continue;
}
}
STRRET str;
hr = shellFolder2->GetDisplayNameOf(pidlItem.get(), SHGDN_NORMAL, &str);
if (SUCCEEDED(hr))
{
TCHAR itemName[MAX_PATH];
hr = StrRetToBuf(&str, pidlItem.get(), itemName, SIZEOF_ARRAY(itemName));
if (SUCCEEDED(hr))
{
int itemId = GenerateUniqueItemId();
m_itemInfoMap[itemId].pidl.reset(ILCombine(pidlDirectory.get(), pidlItem.get()));
m_itemInfoMap[itemId].pridl.reset(ILCloneChild(pidlItem.get()));
EnumeratedItem item;
item.internalIndex = itemId;
item.name = itemName;
items.push_back(item);
}
}
}
for (auto &item : items)
{
TVITEMEX tvItem;
tvItem.mask = TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_PARAM | TVIF_CHILDREN;
tvItem.pszText = item.name.data();
tvItem.iImage = I_IMAGECALLBACK;
tvItem.iSelectedImage = I_IMAGECALLBACK;
tvItem.lParam = item.internalIndex;
tvItem.cChildren = I_CHILDRENCALLBACK;
TVINSERTSTRUCT tvis;
tvis.hInsertAfter = TVI_LAST;
tvis.hParent = hParent;
tvis.itemex = tvItem;
TreeView_InsertItem(m_hTreeView, &tvis);
}
TVSORTCB tvscb;
tvscb.hParent = hParent;
tvscb.lpfnCompare = CompareItemsStub;
tvscb.lParam = reinterpret_cast<LPARAM>(this);
TreeView_SortChildrenCB(m_hTreeView, &tvscb, 0);
SendMessage(m_hTreeView, WM_SETREDRAW, TRUE, 0);
return hr;
}
int ShellTreeView::GenerateUniqueItemId()
{
return m_itemIDCounter++;
}
HTREEITEM ShellTreeView::DetermineItemSortedPosition(HTREEITEM hParent, const TCHAR *szItem)
{
HTREEITEM htInsertAfter = nullptr;
if (PathIsRoot(szItem))
{
return DetermineDriveSortedPosition(hParent, szItem);
}
else
{
HTREEITEM htItem;
HTREEITEM hPreviousItem;
TVITEMEX item;
SFGAOF attributes;
/* Insert the item in its sorted position, skipping
past any drives or any non-filesystem items (i.e.
'My Computer', 'Recycle Bin', etc). */
htItem = TreeView_GetChild(m_hTreeView, hParent);
/* If the parent has no children, this item will
be the first that appears. */
if (htItem == nullptr)
return TVI_FIRST;
hPreviousItem = TVI_FIRST;
while (htInsertAfter == nullptr)
{
item.mask = TVIF_PARAM | TVIF_HANDLE;
item.hItem = htItem;
TreeView_GetItem(m_hTreeView, &item);
std::wstring fullItemPath;
GetDisplayName(m_itemInfoMap.at(static_cast<int>(item.lParam)).pidl.get(),
SHGDN_FORPARSING, fullItemPath);
attributes = GetFileAttributes(fullItemPath.c_str());
/* Only perform the comparison if the current item is a real
file or folder. */
if (!PathIsRoot(fullItemPath.c_str())
&& ((attributes & SFGAO_FILESYSTEM) != SFGAO_FILESYSTEM))
{
if (lstrcmpi(szItem, fullItemPath.c_str()) < 0)
{
htInsertAfter = hPreviousItem;
}
}
hPreviousItem = htItem;
htItem = TreeView_GetNextSibling(m_hTreeView, htItem);
if ((htItem == nullptr) && !htInsertAfter)
{
htInsertAfter = TVI_LAST;
}
}
}
return htInsertAfter;
}
HTREEITEM ShellTreeView::DetermineDriveSortedPosition(HTREEITEM hParent, const TCHAR *szItemName)
{
HTREEITEM htItem;
HTREEITEM hPreviousItem;
TVITEMEX item;
/* Drives will always be the first children of the specified
item (usually 'My Computer'). Therefore, keep looping while
there are more child items and the current item comes
afterwards, or if there are no child items, place the item
as the first child. */
htItem = TreeView_GetChild(m_hTreeView, hParent);
if (htItem == nullptr)
return TVI_FIRST;
hPreviousItem = TVI_FIRST;
while (htItem != nullptr)
{
item.mask = TVIF_PARAM | TVIF_HANDLE;
item.hItem = htItem;
TreeView_GetItem(m_hTreeView, &item);
std::wstring fullItemPath;
GetDisplayName(m_itemInfoMap.at(static_cast<int>(item.lParam)).pidl.get(), SHGDN_FORPARSING,
fullItemPath);
if (PathIsRoot(fullItemPath.c_str()))
{
if (lstrcmp(szItemName, fullItemPath.c_str()) < 0)
return hPreviousItem;
}
else
{
return hPreviousItem;
}
hPreviousItem = htItem;
htItem = TreeView_GetNextSibling(m_hTreeView, htItem);
}
return htItem;
}
unique_pidl_absolute ShellTreeView::GetSelectedItemPidl() const
{
auto selectedItem = TreeView_GetSelection(m_hTreeView);
return GetItemPidl(selectedItem);
}
unique_pidl_absolute ShellTreeView::GetItemPidl(HTREEITEM hTreeItem) const
{
const ItemInfo_t &itemInfo = GetItemByHandle(hTreeItem);
unique_pidl_absolute pidl(ILCloneFull(itemInfo.pidl.get()));
return pidl;
}
const ShellTreeView::ItemInfo_t &ShellTreeView::GetItemByHandle(HTREEITEM item) const
{
int internalIndex = GetItemInternalIndex(item);
return m_itemInfoMap.at(internalIndex);
}
ShellTreeView::ItemInfo_t &ShellTreeView::GetItemByHandle(HTREEITEM item)
{
int internalIndex = GetItemInternalIndex(item);
return m_itemInfoMap.at(internalIndex);
}
int ShellTreeView::GetItemInternalIndex(HTREEITEM item) const
{
TVITEMEX tvItemEx;
tvItemEx.mask = TVIF_HANDLE | TVIF_PARAM;
tvItemEx.hItem = item;
[[maybe_unused]] bool res = TreeView_GetItem(m_hTreeView, &tvItemEx);
assert(res);
return static_cast<int>(tvItemEx.lParam);
}
HTREEITEM ShellTreeView::LocateItem(PCIDLIST_ABSOLUTE pidlDirectory)
{
return LocateItemInternal(pidlDirectory, FALSE);
}
/* Finds items that have been deleted or renamed
(meaning that their pidl's are no longer valid).
Use two basic strategies to find the item: