/*
* Show a folder picker.
*
* @param aInitialDir The initial directory, the last used directory will be
* used if left blank.
* @return true if a file was selected successfully.
*/
bool
nsFilePicker::ShowFolderPicker(const nsString& aInitialDir)
{
if (!IsWin8OrLater()) {
// Some Windows 7 users are experiencing a race condition when some dlls
// that are loaded by the file picker cause a crash while attempting to shut
// down the COM multithreaded apartment. By instantiating EnsureMTA, we hold
// an additional reference to the MTA that should prevent this race, since
// the MTA will remain alive until shutdown.
EnsureMTA ensureMTA;
}
RefPtr<IFileOpenDialog> dialog;
if (FAILED(CoCreateInstance(CLSID_FileOpenDialog, nullptr, CLSCTX_INPROC,
IID_IFileOpenDialog,
getter_AddRefs(dialog)))) {
return false;
}
// hook up event callbacks
dialog->Advise(this, &mFDECookie);
// options
FILEOPENDIALOGOPTIONS fos = FOS_PICKFOLDERS;
dialog->SetOptions(fos);
// initial strings
dialog->SetTitle(mTitle.get());
if (!mOkButtonLabel.IsEmpty()) {
dialog->SetOkButtonLabel(mOkButtonLabel.get());
}
if (!aInitialDir.IsEmpty()) {
RefPtr<IShellItem> folder;
if (SUCCEEDED(
WinUtils::SHCreateItemFromParsingName(aInitialDir.get(), nullptr,
IID_IShellItem,
getter_AddRefs(folder)))) {
dialog->SetFolder(folder);
}
}
AutoDestroyTmpWindow adtw((HWND)(mParentWidget.get() ?
mParentWidget->GetNativeData(NS_NATIVE_TMP_WINDOW) : nullptr));
// display
RefPtr<IShellItem> item;
if (FAILED(dialog->Show(adtw.get())) ||
FAILED(dialog->GetResult(getter_AddRefs(item))) ||
!item) {
dialog->Unadvise(mFDECookie);
return false;
}
dialog->Unadvise(mFDECookie);
// results
// If the user chose a Win7 Library, resolve to the library's
// default save folder.
RefPtr<IShellItem> folderPath;
RefPtr<IShellLibrary> shellLib;
CoCreateInstance(CLSID_ShellLibrary, nullptr, CLSCTX_INPROC,
IID_IShellLibrary, getter_AddRefs(shellLib));
if (shellLib &&
SUCCEEDED(shellLib->LoadLibraryFromItem(item, STGM_READ)) &&
SUCCEEDED(shellLib->GetDefaultSaveFolder(DSFT_DETECT, IID_IShellItem,
getter_AddRefs(folderPath)))) {
item.swap(folderPath);
}
// get the folder's file system path
return WinUtils::GetShellItemPath(item, mUnicodeFile);
}
/*
* Show a file picker.
*
* @param aInitialDir The initial directory, the last used directory will be
* used if left blank.
* @return true if a file was selected successfully.
*/
bool
nsFilePicker::ShowFilePicker(const nsString& aInitialDir)
{
PROFILER_LABEL_FUNC(js::ProfileEntry::Category::OTHER);
if (!IsWin8OrLater()) {
// Some Windows 7 users are experiencing a race condition when some dlls
// that are loaded by the file picker cause a crash while attempting to shut
// down the COM multithreaded apartment. By instantiating EnsureMTA, we hold
// an additional reference to the MTA that should prevent this race, since
// the MTA will remain alive until shutdown.
EnsureMTA ensureMTA;
}
RefPtr<IFileDialog> dialog;
if (mMode != modeSave) {
if (FAILED(CoCreateInstance(CLSID_FileOpenDialog, nullptr, CLSCTX_INPROC,
IID_IFileOpenDialog,
getter_AddRefs(dialog)))) {
return false;
}
} else {
if (FAILED(CoCreateInstance(CLSID_FileSaveDialog, nullptr, CLSCTX_INPROC,
IID_IFileSaveDialog,
getter_AddRefs(dialog)))) {
return false;
}
}
// hook up event callbacks
dialog->Advise(this, &mFDECookie);
// options
FILEOPENDIALOGOPTIONS fos = 0;
fos |= FOS_SHAREAWARE | FOS_OVERWRITEPROMPT |
FOS_FORCEFILESYSTEM;
// Handle add to recent docs settings
if (IsPrivacyModeEnabled() || !mAddToRecentDocs) {
fos |= FOS_DONTADDTORECENT;
}
// Msdn claims FOS_NOCHANGEDIR is not needed. We'll add this
// just in case.
AutoRestoreWorkingPath arw;
// mode specific
switch(mMode) {
case modeOpen:
fos |= FOS_FILEMUSTEXIST;
break;
case modeOpenMultiple:
fos |= FOS_FILEMUSTEXIST | FOS_ALLOWMULTISELECT;
break;
case modeSave:
fos |= FOS_NOREADONLYRETURN;
// Don't follow shortcuts when saving a shortcut, this can be used
// to trick users (bug 271732)
if (IsDefaultPathLink())
fos |= FOS_NODEREFERENCELINKS;
break;
}
dialog->SetOptions(fos);
// initial strings
// title
dialog->SetTitle(mTitle.get());
// default filename
if (!mDefaultFilename.IsEmpty()) {
dialog->SetFileName(mDefaultFilename.get());
}
NS_NAMED_LITERAL_STRING(htmExt, "html");
// default extension to append to new files
if (!mDefaultExtension.IsEmpty()) {
dialog->SetDefaultExtension(mDefaultExtension.get());
} else if (IsDefaultPathHtml()) {
dialog->SetDefaultExtension(htmExt.get());
}
// initial location
if (!aInitialDir.IsEmpty()) {
RefPtr<IShellItem> folder;
if (SUCCEEDED(
WinUtils::SHCreateItemFromParsingName(aInitialDir.get(), nullptr,
IID_IShellItem,
getter_AddRefs(folder)))) {
dialog->SetFolder(folder);
}
}
// filter types and the default index
if (!mComFilterList.IsEmpty()) {
dialog->SetFileTypes(mComFilterList.Length(), mComFilterList.get());
dialog->SetFileTypeIndex(mSelectedType);
}
// display
{
AutoDestroyTmpWindow adtw((HWND)(mParentWidget.get() ?
mParentWidget->GetNativeData(NS_NATIVE_TMP_WINDOW) : nullptr));
AutoTimerCallbackCancel atcc(this, PickerCallbackTimerFunc);
AutoWidgetPickerState awps(mParentWidget);
if (FAILED(dialog->Show(adtw.get()))) {
dialog->Unadvise(mFDECookie);
return false;
}
dialog->Unadvise(mFDECookie);
}
// results
// Remember what filter type the user selected
UINT filterIdxResult;
if (SUCCEEDED(dialog->GetFileTypeIndex(&filterIdxResult))) {
mSelectedType = (int16_t)filterIdxResult;
}
// single selection
if (mMode != modeOpenMultiple) {
RefPtr<IShellItem> item;
if (FAILED(dialog->GetResult(getter_AddRefs(item))) || !item)
return false;
return WinUtils::GetShellItemPath(item, mUnicodeFile);
}
// multiple selection
RefPtr<IFileOpenDialog> openDlg;
dialog->QueryInterface(IID_IFileOpenDialog, getter_AddRefs(openDlg));
if (!openDlg) {
// should not happen
return false;
}
RefPtr<IShellItemArray> items;
if (FAILED(openDlg->GetResults(getter_AddRefs(items))) || !items) {
return false;
}
DWORD count = 0;
items->GetCount(&count);
for (unsigned int idx = 0; idx < count; idx++) {
RefPtr<IShellItem> item;
nsAutoString str;
if (SUCCEEDED(items->GetItemAt(idx, getter_AddRefs(item)))) {
if (!WinUtils::GetShellItemPath(item, str))
continue;
nsCOMPtr<nsIFile> file = do_CreateInstance("@mozilla.org/file/local;1");
if (file && NS_SUCCEEDED(file->InitWithPath(str)))
mFiles.AppendObject(file);
}
}
return true;
}
static bool IsWinRTDLLPresent(PDelayLoadInfo pdli, const char* aLibToken)
{
return (IsWin8OrLater() && pdli->szDll &&
!strnicmp(pdli->szDll, aLibToken, strlen(aLibToken)));
}