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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "stdafx.h" |
| 6 #include "win8/metro_driver/file_picker.h" |
| 7 |
| 8 #include <stddef.h> |
| 9 #include <stdint.h> |
| 10 #include <windows.storage.pickers.h> |
| 11 |
| 12 #include "base/bind.h" |
| 13 #include "base/files/file_path.h" |
| 14 #include "base/logging.h" |
| 15 #include "base/macros.h" |
| 16 #include "base/message_loop/message_loop.h" |
| 17 #include "base/strings/string_util.h" |
| 18 #include "base/synchronization/waitable_event.h" |
| 19 #include "base/win/metro.h" |
| 20 #include "base/win/scoped_comptr.h" |
| 21 #include "win8/metro_driver/chrome_app_view.h" |
| 22 #include "win8/metro_driver/winrt_utils.h" |
| 23 |
| 24 namespace { |
| 25 |
| 26 namespace winstorage = ABI::Windows::Storage; |
| 27 typedef winfoundtn::Collections::IVector<HSTRING> StringVectorItf; |
| 28 |
| 29 // TODO(siggi): Complete this implementation and move it to a common place. |
| 30 class StringVectorImpl : public mswr::RuntimeClass<StringVectorItf> { |
| 31 public: |
| 32 ~StringVectorImpl() { |
| 33 std::for_each(strings_.begin(), strings_.end(), ::WindowsDeleteString); |
| 34 } |
| 35 |
| 36 HRESULT RuntimeClassInitialize(const std::vector<base::string16>& list) { |
| 37 for (size_t i = 0; i < list.size(); ++i) |
| 38 strings_.push_back(MakeHString(list[i])); |
| 39 |
| 40 return S_OK; |
| 41 } |
| 42 |
| 43 // IVector<HSTRING> implementation. |
| 44 STDMETHOD(GetAt)(unsigned index, HSTRING* item) { |
| 45 if (index >= strings_.size()) |
| 46 return E_INVALIDARG; |
| 47 |
| 48 return ::WindowsDuplicateString(strings_[index], item); |
| 49 } |
| 50 STDMETHOD(get_Size)(unsigned *size) { |
| 51 if (strings_.size() > UINT_MAX) |
| 52 return E_UNEXPECTED; |
| 53 *size = static_cast<unsigned>(strings_.size()); |
| 54 return S_OK; |
| 55 } |
| 56 STDMETHOD(GetView)(winfoundtn::Collections::IVectorView<HSTRING> **view) { |
| 57 return E_NOTIMPL; |
| 58 } |
| 59 STDMETHOD(IndexOf)(HSTRING value, unsigned *index, boolean *found) { |
| 60 return E_NOTIMPL; |
| 61 } |
| 62 |
| 63 // write methods |
| 64 STDMETHOD(SetAt)(unsigned index, HSTRING item) { |
| 65 return E_NOTIMPL; |
| 66 } |
| 67 STDMETHOD(InsertAt)(unsigned index, HSTRING item) { |
| 68 return E_NOTIMPL; |
| 69 } |
| 70 STDMETHOD(RemoveAt)(unsigned index) { |
| 71 return E_NOTIMPL; |
| 72 } |
| 73 STDMETHOD(Append)(HSTRING item) { |
| 74 return E_NOTIMPL; |
| 75 } |
| 76 STDMETHOD(RemoveAtEnd)() { |
| 77 return E_NOTIMPL; |
| 78 } |
| 79 STDMETHOD(Clear)() { |
| 80 return E_NOTIMPL; |
| 81 } |
| 82 |
| 83 private: |
| 84 std::vector<HSTRING> strings_; |
| 85 }; |
| 86 |
| 87 class FilePickerSessionBase { |
| 88 public: |
| 89 // Creates a file picker for open_file_name. |
| 90 explicit FilePickerSessionBase(OPENFILENAME* open_file_name); |
| 91 |
| 92 // Runs the picker, returns true on success. |
| 93 bool Run(); |
| 94 |
| 95 protected: |
| 96 // Creates, configures and starts a file picker. |
| 97 // If the HRESULT returned is a failure code the file picker has not started, |
| 98 // so no callbacks should be expected. |
| 99 virtual HRESULT StartFilePicker() = 0; |
| 100 |
| 101 // The parameters to our picker. |
| 102 OPENFILENAME* open_file_name_; |
| 103 // The event Run waits on. |
| 104 base::WaitableEvent event_; |
| 105 // True iff a file picker has successfully finished. |
| 106 bool success_; |
| 107 |
| 108 private: |
| 109 // Initiate a file picker, must be called on the metro dispatcher's thread. |
| 110 void DoFilePicker(); |
| 111 |
| 112 DISALLOW_COPY_AND_ASSIGN(FilePickerSessionBase); |
| 113 }; |
| 114 |
| 115 class OpenFilePickerSession : public FilePickerSessionBase { |
| 116 public: |
| 117 explicit OpenFilePickerSession(OPENFILENAME* open_file_name); |
| 118 |
| 119 private: |
| 120 HRESULT StartFilePicker() override; |
| 121 |
| 122 typedef winfoundtn::IAsyncOperation<winstorage::StorageFile*> |
| 123 SingleFileAsyncOp; |
| 124 typedef winfoundtn::Collections::IVectorView< |
| 125 winstorage::StorageFile*> StorageFileVectorCollection; |
| 126 typedef winfoundtn::IAsyncOperation<StorageFileVectorCollection*> |
| 127 MultiFileAsyncOp; |
| 128 |
| 129 // Called asynchronously when a single file picker is done. |
| 130 HRESULT SinglePickerDone(SingleFileAsyncOp* async, AsyncStatus status); |
| 131 |
| 132 // Called asynchronously when a multi file picker is done. |
| 133 HRESULT MultiPickerDone(MultiFileAsyncOp* async, AsyncStatus status); |
| 134 |
| 135 // Composes a multi-file result string suitable for returning to a |
| 136 // from a storage file collection. |
| 137 static HRESULT ComposeMultiFileResult(StorageFileVectorCollection* files, |
| 138 base::string16* result); |
| 139 private: |
| 140 DISALLOW_COPY_AND_ASSIGN(OpenFilePickerSession); |
| 141 }; |
| 142 |
| 143 class SaveFilePickerSession : public FilePickerSessionBase { |
| 144 public: |
| 145 explicit SaveFilePickerSession(OPENFILENAME* open_file_name); |
| 146 |
| 147 private: |
| 148 HRESULT StartFilePicker() override; |
| 149 |
| 150 typedef winfoundtn::IAsyncOperation<winstorage::StorageFile*> |
| 151 SaveFileAsyncOp; |
| 152 |
| 153 // Called asynchronously when the save file picker is done. |
| 154 HRESULT FilePickerDone(SaveFileAsyncOp* async, AsyncStatus status); |
| 155 }; |
| 156 |
| 157 FilePickerSessionBase::FilePickerSessionBase(OPENFILENAME* open_file_name) |
| 158 : open_file_name_(open_file_name), |
| 159 event_(true, false), |
| 160 success_(false) { |
| 161 } |
| 162 |
| 163 bool FilePickerSessionBase::Run() { |
| 164 DCHECK(globals.appview_msg_loop != NULL); |
| 165 |
| 166 // Post the picker request over to the metro thread. |
| 167 bool posted = globals.appview_msg_loop->PostTask(FROM_HERE, |
| 168 base::Bind(&FilePickerSessionBase::DoFilePicker, base::Unretained(this))); |
| 169 if (!posted) |
| 170 return false; |
| 171 |
| 172 // Wait for the file picker to complete. |
| 173 event_.Wait(); |
| 174 |
| 175 return success_; |
| 176 } |
| 177 |
| 178 void FilePickerSessionBase::DoFilePicker() { |
| 179 // The file picker will fail if spawned from a snapped application, |
| 180 // so let's attempt to unsnap first if we're in that state. |
| 181 HRESULT hr = ChromeAppView::Unsnap(); |
| 182 if (FAILED(hr)) { |
| 183 LOG(ERROR) << "Failed to unsnap for file picker, error 0x" << hr; |
| 184 } |
| 185 |
| 186 if (SUCCEEDED(hr)) |
| 187 hr = StartFilePicker(); |
| 188 |
| 189 if (FAILED(hr)) { |
| 190 LOG(ERROR) << "Failed to start file picker, error 0x" |
| 191 << std::hex << hr; |
| 192 |
| 193 event_.Signal(); |
| 194 } |
| 195 } |
| 196 |
| 197 OpenFilePickerSession::OpenFilePickerSession(OPENFILENAME* open_file_name) |
| 198 : FilePickerSessionBase(open_file_name) { |
| 199 } |
| 200 |
| 201 HRESULT OpenFilePickerSession::SinglePickerDone(SingleFileAsyncOp* async, |
| 202 AsyncStatus status) { |
| 203 if (status == Completed) { |
| 204 mswr::ComPtr<winstorage::IStorageFile> file; |
| 205 HRESULT hr = async->GetResults(file.GetAddressOf()); |
| 206 |
| 207 if (file) { |
| 208 mswr::ComPtr<winstorage::IStorageItem> storage_item; |
| 209 if (SUCCEEDED(hr)) |
| 210 hr = file.As(&storage_item); |
| 211 |
| 212 mswrw::HString file_path; |
| 213 if (SUCCEEDED(hr)) |
| 214 hr = storage_item->get_Path(file_path.GetAddressOf()); |
| 215 |
| 216 if (SUCCEEDED(hr)) { |
| 217 UINT32 path_len = 0; |
| 218 const wchar_t* path_str = |
| 219 ::WindowsGetStringRawBuffer(file_path.Get(), &path_len); |
| 220 |
| 221 // If the selected file name is longer than the supplied buffer, |
| 222 // we return false as per GetOpenFileName documentation. |
| 223 if (path_len < open_file_name_->nMaxFile) { |
| 224 base::wcslcpy(open_file_name_->lpstrFile, |
| 225 path_str, |
| 226 open_file_name_->nMaxFile); |
| 227 success_ = true; |
| 228 } |
| 229 } |
| 230 } else { |
| 231 LOG(ERROR) << "NULL IStorageItem"; |
| 232 } |
| 233 } else { |
| 234 LOG(ERROR) << "Unexpected async status " << static_cast<int>(status); |
| 235 } |
| 236 |
| 237 event_.Signal(); |
| 238 |
| 239 return S_OK; |
| 240 } |
| 241 |
| 242 HRESULT OpenFilePickerSession::MultiPickerDone(MultiFileAsyncOp* async, |
| 243 AsyncStatus status) { |
| 244 if (status == Completed) { |
| 245 mswr::ComPtr<StorageFileVectorCollection> files; |
| 246 HRESULT hr = async->GetResults(files.GetAddressOf()); |
| 247 |
| 248 if (files) { |
| 249 base::string16 result; |
| 250 if (SUCCEEDED(hr)) |
| 251 hr = ComposeMultiFileResult(files.Get(), &result); |
| 252 |
| 253 if (SUCCEEDED(hr)) { |
| 254 if (result.size() + 1 < open_file_name_->nMaxFile) { |
| 255 // Because the result has embedded nulls, we must memcpy. |
| 256 memcpy(open_file_name_->lpstrFile, |
| 257 result.c_str(), |
| 258 (result.size() + 1) * sizeof(result[0])); |
| 259 success_ = true; |
| 260 } |
| 261 } |
| 262 } else { |
| 263 LOG(ERROR) << "NULL StorageFileVectorCollection"; |
| 264 } |
| 265 } else { |
| 266 LOG(ERROR) << "Unexpected async status " << static_cast<int>(status); |
| 267 } |
| 268 |
| 269 event_.Signal(); |
| 270 |
| 271 return S_OK; |
| 272 } |
| 273 |
| 274 HRESULT OpenFilePickerSession::StartFilePicker() { |
| 275 DCHECK(globals.appview_msg_loop->BelongsToCurrentThread()); |
| 276 DCHECK(open_file_name_ != NULL); |
| 277 |
| 278 mswrw::HStringReference class_name( |
| 279 RuntimeClass_Windows_Storage_Pickers_FileOpenPicker); |
| 280 |
| 281 // Create the file picker. |
| 282 mswr::ComPtr<winstorage::Pickers::IFileOpenPicker> picker; |
| 283 HRESULT hr = ::Windows::Foundation::ActivateInstance( |
| 284 class_name.Get(), picker.GetAddressOf()); |
| 285 CheckHR(hr); |
| 286 |
| 287 // Set the file type filter |
| 288 mswr::ComPtr<winfoundtn::Collections::IVector<HSTRING>> filter; |
| 289 hr = picker->get_FileTypeFilter(filter.GetAddressOf()); |
| 290 if (FAILED(hr)) |
| 291 return hr; |
| 292 |
| 293 if (open_file_name_->lpstrFilter == NULL) { |
| 294 hr = filter->Append(mswrw::HStringReference(L"*").Get()); |
| 295 if (FAILED(hr)) |
| 296 return hr; |
| 297 } else { |
| 298 // The filter is a concatenation of zero terminated string pairs, |
| 299 // where each pair is {description, extension}. The concatenation ends |
| 300 // with a zero length string - e.g. a double zero terminator. |
| 301 const wchar_t* walk = open_file_name_->lpstrFilter; |
| 302 while (*walk != L'\0') { |
| 303 // Walk past the description. |
| 304 walk += wcslen(walk) + 1; |
| 305 |
| 306 // We should have an extension, but bail on malformed filters. |
| 307 if (*walk == L'\0') |
| 308 break; |
| 309 |
| 310 // There can be a single extension, or a list of semicolon-separated ones. |
| 311 std::vector<base::string16> extensions_win32_style = base::SplitString( |
| 312 walk, L";", base::KEEP_WHITESPACE, base::SPLIT_WANT_NONEMPTY); |
| 313 |
| 314 // Metro wants suffixes only, not patterns. |
| 315 mswrw::HString extension; |
| 316 for (size_t i = 0; i < extensions_win32_style.size(); ++i) { |
| 317 if (extensions_win32_style[i] == L"*.*") { |
| 318 // The wildcard filter is "*" for Metro. The string "*.*" produces |
| 319 // an "invalid parameter" error. |
| 320 hr = extension.Set(L"*"); |
| 321 } else { |
| 322 // Metro wants suffixes only, not patterns. |
| 323 base::string16 ext = |
| 324 base::FilePath(extensions_win32_style[i]).Extension(); |
| 325 if ((ext.size() < 2) || |
| 326 (ext.find_first_of(L"*?") != base::string16::npos)) { |
| 327 continue; |
| 328 } |
| 329 hr = extension.Set(ext.c_str()); |
| 330 } |
| 331 if (SUCCEEDED(hr)) |
| 332 hr = filter->Append(extension.Get()); |
| 333 if (FAILED(hr)) |
| 334 return hr; |
| 335 } |
| 336 |
| 337 // Walk past the extension. |
| 338 walk += wcslen(walk) + 1; |
| 339 } |
| 340 } |
| 341 |
| 342 // Spin up a single or multi picker as appropriate. |
| 343 if (open_file_name_->Flags & OFN_ALLOWMULTISELECT) { |
| 344 mswr::ComPtr<MultiFileAsyncOp> completion; |
| 345 hr = picker->PickMultipleFilesAsync(&completion); |
| 346 if (FAILED(hr)) |
| 347 return hr; |
| 348 |
| 349 // Create the callback method. |
| 350 typedef winfoundtn::IAsyncOperationCompletedHandler< |
| 351 StorageFileVectorCollection*> HandlerDoneType; |
| 352 mswr::ComPtr<HandlerDoneType> handler(mswr::Callback<HandlerDoneType>( |
| 353 this, &OpenFilePickerSession::MultiPickerDone)); |
| 354 DCHECK(handler.Get() != NULL); |
| 355 hr = completion->put_Completed(handler.Get()); |
| 356 |
| 357 return hr; |
| 358 } else { |
| 359 mswr::ComPtr<SingleFileAsyncOp> completion; |
| 360 hr = picker->PickSingleFileAsync(&completion); |
| 361 if (FAILED(hr)) |
| 362 return hr; |
| 363 |
| 364 // Create the callback method. |
| 365 typedef winfoundtn::IAsyncOperationCompletedHandler< |
| 366 winstorage::StorageFile*> HandlerDoneType; |
| 367 mswr::ComPtr<HandlerDoneType> handler(mswr::Callback<HandlerDoneType>( |
| 368 this, &OpenFilePickerSession::SinglePickerDone)); |
| 369 DCHECK(handler.Get() != NULL); |
| 370 hr = completion->put_Completed(handler.Get()); |
| 371 |
| 372 return hr; |
| 373 } |
| 374 } |
| 375 |
| 376 HRESULT OpenFilePickerSession::ComposeMultiFileResult( |
| 377 StorageFileVectorCollection* files, base::string16* result) { |
| 378 DCHECK(files != NULL); |
| 379 DCHECK(result != NULL); |
| 380 |
| 381 // Empty the output string. |
| 382 result->clear(); |
| 383 |
| 384 unsigned int num_files = 0; |
| 385 HRESULT hr = files->get_Size(&num_files); |
| 386 if (FAILED(hr)) |
| 387 return hr; |
| 388 |
| 389 // Make sure we return an error on an empty collection. |
| 390 if (num_files == 0) { |
| 391 DLOG(ERROR) << "Empty collection on input."; |
| 392 return E_UNEXPECTED; |
| 393 } |
| 394 |
| 395 // This stores the base path that should be the parent of all the files. |
| 396 base::FilePath base_path; |
| 397 |
| 398 // Iterate through the collection and append the file paths to the result. |
| 399 for (unsigned int i = 0; i < num_files; ++i) { |
| 400 mswr::ComPtr<winstorage::IStorageFile> file; |
| 401 hr = files->GetAt(i, file.GetAddressOf()); |
| 402 if (FAILED(hr)) |
| 403 return hr; |
| 404 |
| 405 mswr::ComPtr<winstorage::IStorageItem> storage_item; |
| 406 hr = file.As(&storage_item); |
| 407 if (FAILED(hr)) |
| 408 return hr; |
| 409 |
| 410 mswrw::HString file_path_str; |
| 411 hr = storage_item->get_Path(file_path_str.GetAddressOf()); |
| 412 if (FAILED(hr)) |
| 413 return hr; |
| 414 |
| 415 base::FilePath file_path(MakeStdWString(file_path_str.Get())); |
| 416 if (base_path.empty()) { |
| 417 DCHECK(result->empty()); |
| 418 base_path = file_path.DirName(); |
| 419 |
| 420 // Append the path, including the terminating zero. |
| 421 // We do this only for the first file. |
| 422 result->append(base_path.value().c_str(), base_path.value().size() + 1); |
| 423 } |
| 424 DCHECK(!result->empty()); |
| 425 DCHECK(!base_path.empty()); |
| 426 DCHECK(base_path == file_path.DirName()); |
| 427 |
| 428 // Append the base name, including the terminating zero. |
| 429 base::FilePath base_name = file_path.BaseName(); |
| 430 result->append(base_name.value().c_str(), base_name.value().size() + 1); |
| 431 } |
| 432 |
| 433 DCHECK(!result->empty()); |
| 434 |
| 435 return S_OK; |
| 436 } |
| 437 |
| 438 SaveFilePickerSession::SaveFilePickerSession(OPENFILENAME* open_file_name) |
| 439 : FilePickerSessionBase(open_file_name) { |
| 440 } |
| 441 |
| 442 HRESULT SaveFilePickerSession::StartFilePicker() { |
| 443 DCHECK(globals.appview_msg_loop->BelongsToCurrentThread()); |
| 444 DCHECK(open_file_name_ != NULL); |
| 445 |
| 446 mswrw::HStringReference class_name( |
| 447 RuntimeClass_Windows_Storage_Pickers_FileSavePicker); |
| 448 |
| 449 // Create the file picker. |
| 450 mswr::ComPtr<winstorage::Pickers::IFileSavePicker> picker; |
| 451 HRESULT hr = ::Windows::Foundation::ActivateInstance( |
| 452 class_name.Get(), picker.GetAddressOf()); |
| 453 CheckHR(hr); |
| 454 |
| 455 typedef winfoundtn::Collections::IMap<HSTRING, StringVectorItf*> |
| 456 StringVectorMap; |
| 457 mswr::ComPtr<StringVectorMap> choices; |
| 458 hr = picker->get_FileTypeChoices(choices.GetAddressOf()); |
| 459 if (FAILED(hr)) |
| 460 return hr; |
| 461 |
| 462 if (open_file_name_->lpstrFilter) { |
| 463 // The filter is a concatenation of zero terminated string pairs, |
| 464 // where each pair is {description, extension list}. The concatenation ends |
| 465 // with a zero length string - e.g. a double zero terminator. |
| 466 const wchar_t* walk = open_file_name_->lpstrFilter; |
| 467 while (*walk != L'\0') { |
| 468 mswrw::HString description; |
| 469 hr = description.Set(walk); |
| 470 if (FAILED(hr)) |
| 471 return hr; |
| 472 |
| 473 // Walk past the description. |
| 474 walk += wcslen(walk) + 1; |
| 475 |
| 476 // We should have an extension, but bail on malformed filters. |
| 477 if (*walk == L'\0') |
| 478 break; |
| 479 |
| 480 // There can be a single extension, or a list of semicolon-separated ones. |
| 481 std::vector<base::string16> extensions_win32_style = base::SplitString( |
| 482 walk, L";", base::KEEP_WHITESPACE, base::SPLIT_WANT_NONEMPTY); |
| 483 |
| 484 // Metro wants suffixes only, not patterns. Also, metro does not support |
| 485 // the all files ("*") pattern in the save picker. |
| 486 std::vector<base::string16> extensions; |
| 487 for (size_t i = 0; i < extensions_win32_style.size(); ++i) { |
| 488 base::string16 ext = |
| 489 base::FilePath(extensions_win32_style[i]).Extension(); |
| 490 if ((ext.size() < 2) || |
| 491 (ext.find_first_of(L"*?") != base::string16::npos)) |
| 492 continue; |
| 493 extensions.push_back(ext); |
| 494 } |
| 495 |
| 496 if (!extensions.empty()) { |
| 497 // Convert to a Metro collection class. |
| 498 mswr::ComPtr<StringVectorItf> list; |
| 499 hr = mswr::MakeAndInitialize<StringVectorImpl>( |
| 500 list.GetAddressOf(), extensions); |
| 501 if (FAILED(hr)) |
| 502 return hr; |
| 503 |
| 504 // Finally set the filter. |
| 505 boolean replaced = FALSE; |
| 506 hr = choices->Insert(description.Get(), list.Get(), &replaced); |
| 507 if (FAILED(hr)) |
| 508 return hr; |
| 509 DCHECK_EQ(FALSE, replaced); |
| 510 } |
| 511 |
| 512 // Walk past the extension(s). |
| 513 walk += wcslen(walk) + 1; |
| 514 } |
| 515 } |
| 516 |
| 517 // The save picker requires at least one choice. Callers are strongly advised |
| 518 // to provide sensible choices. If none were given, fallback to .dat. |
| 519 uint32_t num_choices = 0; |
| 520 hr = choices->get_Size(&num_choices); |
| 521 if (FAILED(hr)) |
| 522 return hr; |
| 523 |
| 524 if (num_choices == 0) { |
| 525 mswrw::HString description; |
| 526 // TODO(grt): Get a properly translated string. This can't be done from |
| 527 // within metro_driver. Consider preprocessing the filter list in Chrome |
| 528 // land to ensure it has this entry if all others are patterns. In that |
| 529 // case, this whole block of code can be removed. |
| 530 hr = description.Set(L"Data File"); |
| 531 if (FAILED(hr)) |
| 532 return hr; |
| 533 |
| 534 mswr::ComPtr<StringVectorItf> list; |
| 535 hr = mswr::MakeAndInitialize<StringVectorImpl>( |
| 536 list.GetAddressOf(), std::vector<base::string16>(1, L".dat")); |
| 537 if (FAILED(hr)) |
| 538 return hr; |
| 539 |
| 540 boolean replaced = FALSE; |
| 541 hr = choices->Insert(description.Get(), list.Get(), &replaced); |
| 542 if (FAILED(hr)) |
| 543 return hr; |
| 544 DCHECK_EQ(FALSE, replaced); |
| 545 } |
| 546 |
| 547 if (open_file_name_->lpstrFile != NULL) { |
| 548 hr = picker->put_SuggestedFileName( |
| 549 mswrw::HStringReference( |
| 550 const_cast<const wchar_t*>(open_file_name_->lpstrFile)).Get()); |
| 551 if (FAILED(hr)) |
| 552 return hr; |
| 553 } |
| 554 |
| 555 mswr::ComPtr<SaveFileAsyncOp> completion; |
| 556 hr = picker->PickSaveFileAsync(&completion); |
| 557 if (FAILED(hr)) |
| 558 return hr; |
| 559 |
| 560 // Create the callback method. |
| 561 typedef winfoundtn::IAsyncOperationCompletedHandler< |
| 562 winstorage::StorageFile*> HandlerDoneType; |
| 563 mswr::ComPtr<HandlerDoneType> handler(mswr::Callback<HandlerDoneType>( |
| 564 this, &SaveFilePickerSession::FilePickerDone)); |
| 565 DCHECK(handler.Get() != NULL); |
| 566 hr = completion->put_Completed(handler.Get()); |
| 567 |
| 568 return hr; |
| 569 } |
| 570 |
| 571 HRESULT SaveFilePickerSession::FilePickerDone(SaveFileAsyncOp* async, |
| 572 AsyncStatus status) { |
| 573 if (status == Completed) { |
| 574 mswr::ComPtr<winstorage::IStorageFile> file; |
| 575 HRESULT hr = async->GetResults(file.GetAddressOf()); |
| 576 |
| 577 if (file) { |
| 578 mswr::ComPtr<winstorage::IStorageItem> storage_item; |
| 579 if (SUCCEEDED(hr)) |
| 580 hr = file.As(&storage_item); |
| 581 |
| 582 mswrw::HString file_path; |
| 583 if (SUCCEEDED(hr)) |
| 584 hr = storage_item->get_Path(file_path.GetAddressOf()); |
| 585 |
| 586 if (SUCCEEDED(hr)) { |
| 587 base::string16 path_str = MakeStdWString(file_path.Get()); |
| 588 |
| 589 // If the selected file name is longer than the supplied buffer, |
| 590 // we return false as per GetOpenFileName documentation. |
| 591 if (path_str.size() < open_file_name_->nMaxFile) { |
| 592 base::wcslcpy(open_file_name_->lpstrFile, |
| 593 path_str.c_str(), |
| 594 open_file_name_->nMaxFile); |
| 595 success_ = true; |
| 596 } |
| 597 } |
| 598 } else { |
| 599 LOG(ERROR) << "NULL IStorageItem"; |
| 600 } |
| 601 } else { |
| 602 LOG(ERROR) << "Unexpected async status " << static_cast<int>(status); |
| 603 } |
| 604 |
| 605 event_.Signal(); |
| 606 |
| 607 return S_OK; |
| 608 } |
| 609 |
| 610 } // namespace |
| 611 |
| 612 BOOL MetroGetOpenFileName(OPENFILENAME* open_file_name) { |
| 613 OpenFilePickerSession session(open_file_name); |
| 614 |
| 615 return session.Run(); |
| 616 } |
| 617 |
| 618 BOOL MetroGetSaveFileName(OPENFILENAME* open_file_name) { |
| 619 SaveFilePickerSession session(open_file_name); |
| 620 |
| 621 return session.Run(); |
| 622 } |
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