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 "ui/shell_dialogs/select_file_dialog_win.h" 6 7#include <windows.h> 8#include <commdlg.h> 9#include <shlobj.h> 10 11#include <algorithm> 12#include <set> 13 14#include "base/bind.h" 15#include "base/file_util.h" 16#include "base/files/file_path.h" 17#include "base/i18n/case_conversion.h" 18#include "base/message_loop/message_loop.h" 19#include "base/message_loop/message_loop_proxy.h" 20#include "base/strings/string_split.h" 21#include "base/strings/utf_string_conversions.h" 22#include "base/threading/thread.h" 23#include "base/win/metro.h" 24#include "base/win/registry.h" 25#include "base/win/scoped_comptr.h" 26#include "base/win/shortcut.h" 27#include "base/win/windows_version.h" 28#include "grit/ui_strings.h" 29#include "ui/base/l10n/l10n_util.h" 30#include "ui/gfx/native_widget_types.h" 31#include "ui/shell_dialogs/base_shell_dialog_win.h" 32#include "ui/shell_dialogs/shell_dialogs_delegate.h" 33 34#if defined(USE_AURA) 35#include "ui/aura/remote_root_window_host_win.h" 36#include "ui/aura/root_window.h" 37#endif 38 39namespace { 40 41// Given |extension|, if it's not empty, then remove the leading dot. 42std::wstring GetExtensionWithoutLeadingDot(const std::wstring& extension) { 43 DCHECK(extension.empty() || extension[0] == L'.'); 44 return extension.empty() ? extension : extension.substr(1); 45} 46 47// Diverts to a metro-specific implementation as appropriate. 48bool CallGetOpenFileName(OPENFILENAME* ofn) { 49 HMODULE metro_module = base::win::GetMetroModule(); 50 if (metro_module != NULL) { 51 typedef BOOL (*MetroGetOpenFileName)(OPENFILENAME*); 52 MetroGetOpenFileName metro_get_open_file_name = 53 reinterpret_cast<MetroGetOpenFileName>( 54 ::GetProcAddress(metro_module, "MetroGetOpenFileName")); 55 if (metro_get_open_file_name == NULL) { 56 NOTREACHED(); 57 return false; 58 } 59 60 return metro_get_open_file_name(ofn) == TRUE; 61 } else { 62 return GetOpenFileName(ofn) == TRUE; 63 } 64} 65 66// Diverts to a metro-specific implementation as appropriate. 67bool CallGetSaveFileName(OPENFILENAME* ofn) { 68 HMODULE metro_module = base::win::GetMetroModule(); 69 if (metro_module != NULL) { 70 typedef BOOL (*MetroGetSaveFileName)(OPENFILENAME*); 71 MetroGetSaveFileName metro_get_save_file_name = 72 reinterpret_cast<MetroGetSaveFileName>( 73 ::GetProcAddress(metro_module, "MetroGetSaveFileName")); 74 if (metro_get_save_file_name == NULL) { 75 NOTREACHED(); 76 return false; 77 } 78 79 return metro_get_save_file_name(ofn) == TRUE; 80 } else { 81 return GetSaveFileName(ofn) == TRUE; 82 } 83} 84 85// Distinguish directories from regular files. 86bool IsDirectory(const base::FilePath& path) { 87 base::PlatformFileInfo file_info; 88 return file_util::GetFileInfo(path, &file_info) ? 89 file_info.is_directory : path.EndsWithSeparator(); 90} 91 92// Get the file type description from the registry. This will be "Text Document" 93// for .txt files, "JPEG Image" for .jpg files, etc. If the registry doesn't 94// have an entry for the file type, we return false, true if the description was 95// found. 'file_ext' must be in form ".txt". 96static bool GetRegistryDescriptionFromExtension(const std::wstring& file_ext, 97 std::wstring* reg_description) { 98 DCHECK(reg_description); 99 base::win::RegKey reg_ext(HKEY_CLASSES_ROOT, file_ext.c_str(), KEY_READ); 100 std::wstring reg_app; 101 if (reg_ext.ReadValue(NULL, ®_app) == ERROR_SUCCESS && !reg_app.empty()) { 102 base::win::RegKey reg_link(HKEY_CLASSES_ROOT, reg_app.c_str(), KEY_READ); 103 if (reg_link.ReadValue(NULL, reg_description) == ERROR_SUCCESS) 104 return true; 105 } 106 return false; 107} 108 109// Set up a filter for a Save/Open dialog, which will consist of |file_ext| file 110// extensions (internally separated by semicolons), |ext_desc| as the text 111// descriptions of the |file_ext| types (optional), and (optionally) the default 112// 'All Files' view. The purpose of the filter is to show only files of a 113// particular type in a Windows Save/Open dialog box. The resulting filter is 114// returned. The filters created here are: 115// 1. only files that have 'file_ext' as their extension 116// 2. all files (only added if 'include_all_files' is true) 117// Example: 118// file_ext: { "*.txt", "*.htm;*.html" } 119// ext_desc: { "Text Document" } 120// returned: "Text Document\0*.txt\0HTML Document\0*.htm;*.html\0" 121// "All Files\0*.*\0\0" (in one big string) 122// If a description is not provided for a file extension, it will be retrieved 123// from the registry. If the file extension does not exist in the registry, it 124// will be omitted from the filter, as it is likely a bogus extension. 125std::wstring FormatFilterForExtensions( 126 const std::vector<std::wstring>& file_ext, 127 const std::vector<std::wstring>& ext_desc, 128 bool include_all_files) { 129 const std::wstring all_ext = L"*.*"; 130 const std::wstring all_desc = 131 l10n_util::GetStringUTF16(IDS_APP_SAVEAS_ALL_FILES); 132 133 DCHECK(file_ext.size() >= ext_desc.size()); 134 135 if (file_ext.empty()) 136 include_all_files = true; 137 138 std::wstring result; 139 140 for (size_t i = 0; i < file_ext.size(); ++i) { 141 std::wstring ext = file_ext[i]; 142 std::wstring desc; 143 if (i < ext_desc.size()) 144 desc = ext_desc[i]; 145 146 if (ext.empty()) { 147 // Force something reasonable to appear in the dialog box if there is no 148 // extension provided. 149 include_all_files = true; 150 continue; 151 } 152 153 if (desc.empty()) { 154 DCHECK(ext.find(L'.') != std::wstring::npos); 155 std::wstring first_extension = ext.substr(ext.find(L'.')); 156 size_t first_separator_index = first_extension.find(L';'); 157 if (first_separator_index != std::wstring::npos) 158 first_extension = first_extension.substr(0, first_separator_index); 159 160 // Find the extension name without the preceeding '.' character. 161 std::wstring ext_name = first_extension; 162 size_t ext_index = ext_name.find_first_not_of(L'.'); 163 if (ext_index != std::wstring::npos) 164 ext_name = ext_name.substr(ext_index); 165 166 if (!GetRegistryDescriptionFromExtension(first_extension, &desc)) { 167 // The extension doesn't exist in the registry. Create a description 168 // based on the unknown extension type (i.e. if the extension is .qqq, 169 // the we create a description "QQQ File (.qqq)"). 170 include_all_files = true; 171 desc = l10n_util::GetStringFUTF16( 172 IDS_APP_SAVEAS_EXTENSION_FORMAT, 173 base::i18n::ToUpper(WideToUTF16(ext_name)), 174 ext_name); 175 } 176 if (desc.empty()) 177 desc = L"*." + ext_name; 178 } 179 180 result.append(desc.c_str(), desc.size() + 1); // Append NULL too. 181 result.append(ext.c_str(), ext.size() + 1); 182 } 183 184 if (include_all_files) { 185 result.append(all_desc.c_str(), all_desc.size() + 1); 186 result.append(all_ext.c_str(), all_ext.size() + 1); 187 } 188 189 result.append(1, '\0'); // Double NULL required. 190 return result; 191} 192 193// Enforce visible dialog box. 194UINT_PTR CALLBACK SaveAsDialogHook(HWND dialog, UINT message, 195 WPARAM wparam, LPARAM lparam) { 196 static const UINT kPrivateMessage = 0x2F3F; 197 switch (message) { 198 case WM_INITDIALOG: { 199 // Do nothing here. Just post a message to defer actual processing. 200 PostMessage(dialog, kPrivateMessage, 0, 0); 201 return TRUE; 202 } 203 case kPrivateMessage: { 204 // The dialog box is the parent of the current handle. 205 HWND real_dialog = GetParent(dialog); 206 207 // Retrieve the final size. 208 RECT dialog_rect; 209 GetWindowRect(real_dialog, &dialog_rect); 210 211 // Verify that the upper left corner is visible. 212 POINT point = { dialog_rect.left, dialog_rect.top }; 213 HMONITOR monitor1 = MonitorFromPoint(point, MONITOR_DEFAULTTONULL); 214 point.x = dialog_rect.right; 215 point.y = dialog_rect.bottom; 216 217 // Verify that the lower right corner is visible. 218 HMONITOR monitor2 = MonitorFromPoint(point, MONITOR_DEFAULTTONULL); 219 if (monitor1 && monitor2) 220 return 0; 221 222 // Some part of the dialog box is not visible, fix it by moving is to the 223 // client rect position of the browser window. 224 HWND parent_window = GetParent(real_dialog); 225 if (!parent_window) 226 return 0; 227 WINDOWINFO parent_info; 228 parent_info.cbSize = sizeof(WINDOWINFO); 229 GetWindowInfo(parent_window, &parent_info); 230 SetWindowPos(real_dialog, NULL, 231 parent_info.rcClient.left, 232 parent_info.rcClient.top, 233 0, 0, // Size. 234 SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOSIZE | 235 SWP_NOZORDER); 236 237 return 0; 238 } 239 } 240 return 0; 241} 242 243// Prompt the user for location to save a file. 244// Callers should provide the filter string, and also a filter index. 245// The parameter |index| indicates the initial index of filter description 246// and filter pattern for the dialog box. If |index| is zero or greater than 247// the number of total filter types, the system uses the first filter in the 248// |filter| buffer. |index| is used to specify the initial selected extension, 249// and when done contains the extension the user chose. The parameter 250// |final_name| returns the file name which contains the drive designator, 251// path, file name, and extension of the user selected file name. |def_ext| is 252// the default extension to give to the file if the user did not enter an 253// extension. If |ignore_suggested_ext| is true, any file extension contained in 254// |suggested_name| will not be used to generate the file name. This is useful 255// in the case of saving web pages, where we know the extension type already and 256// where |suggested_name| may contain a '.' character as a valid part of the 257// name, thus confusing our extension detection code. 258bool SaveFileAsWithFilter(HWND owner, 259 const std::wstring& suggested_name, 260 const std::wstring& filter, 261 const std::wstring& def_ext, 262 bool ignore_suggested_ext, 263 unsigned* index, 264 std::wstring* final_name) { 265 DCHECK(final_name); 266 // Having an empty filter makes for a bad user experience. We should always 267 // specify a filter when saving. 268 DCHECK(!filter.empty()); 269 const base::FilePath suggested_path(suggested_name); 270 std::wstring file_part = suggested_path.BaseName().value(); 271 // If the suggested_name is a root directory, file_part will be '\', and the 272 // call to GetSaveFileName below will fail. 273 if (file_part.size() == 1 && file_part[0] == L'\\') 274 file_part.clear(); 275 276 // The size of the in/out buffer in number of characters we pass to win32 277 // GetSaveFileName. From MSDN "The buffer must be large enough to store the 278 // path and file name string or strings, including the terminating NULL 279 // character. ... The buffer should be at least 256 characters long.". 280 // _IsValidPathComDlg does a copy expecting at most MAX_PATH, otherwise will 281 // result in an error of FNERR_INVALIDFILENAME. So we should only pass the 282 // API a buffer of at most MAX_PATH. 283 wchar_t file_name[MAX_PATH]; 284 base::wcslcpy(file_name, file_part.c_str(), arraysize(file_name)); 285 286 OPENFILENAME save_as; 287 // We must do this otherwise the ofn's FlagsEx may be initialized to random 288 // junk in release builds which can cause the Places Bar not to show up! 289 ZeroMemory(&save_as, sizeof(save_as)); 290 save_as.lStructSize = sizeof(OPENFILENAME); 291 save_as.hwndOwner = owner; 292 save_as.hInstance = NULL; 293 294 save_as.lpstrFilter = filter.empty() ? NULL : filter.c_str(); 295 296 save_as.lpstrCustomFilter = NULL; 297 save_as.nMaxCustFilter = 0; 298 save_as.nFilterIndex = *index; 299 save_as.lpstrFile = file_name; 300 save_as.nMaxFile = arraysize(file_name); 301 save_as.lpstrFileTitle = NULL; 302 save_as.nMaxFileTitle = 0; 303 304 // Set up the initial directory for the dialog. 305 std::wstring directory; 306 if (!suggested_name.empty()) { 307 if (IsDirectory(suggested_path)) { 308 directory = suggested_path.value(); 309 file_part.clear(); 310 } else { 311 directory = suggested_path.DirName().value(); 312 } 313 } 314 315 save_as.lpstrInitialDir = directory.c_str(); 316 save_as.lpstrTitle = NULL; 317 save_as.Flags = OFN_OVERWRITEPROMPT | OFN_EXPLORER | OFN_ENABLESIZING | 318 OFN_NOCHANGEDIR | OFN_PATHMUSTEXIST; 319 save_as.lpstrDefExt = &def_ext[0]; 320 save_as.lCustData = NULL; 321 322 if (base::win::GetVersion() < base::win::VERSION_VISTA) { 323 // The save as on Windows XP remembers its last position, 324 // and if the screen resolution changed, it will be off screen. 325 save_as.Flags |= OFN_ENABLEHOOK; 326 save_as.lpfnHook = &SaveAsDialogHook; 327 } 328 329 // Must be NULL or 0. 330 save_as.pvReserved = NULL; 331 save_as.dwReserved = 0; 332 333 if (!CallGetSaveFileName(&save_as)) { 334 // Zero means the dialog was closed, otherwise we had an error. 335 DWORD error_code = CommDlgExtendedError(); 336 if (error_code != 0) { 337 NOTREACHED() << "GetSaveFileName failed with code: " << error_code; 338 } 339 return false; 340 } 341 342 // Return the user's choice. 343 final_name->assign(save_as.lpstrFile); 344 *index = save_as.nFilterIndex; 345 346 // Figure out what filter got selected from the vector with embedded nulls. 347 // NOTE: The filter contains a string with embedded nulls, such as: 348 // JPG Image\0*.jpg\0All files\0*.*\0\0 349 // The filter index is 1-based index for which pair got selected. So, using 350 // the example above, if the first index was selected we need to skip 1 351 // instance of null to get to "*.jpg". 352 std::vector<std::wstring> filters; 353 if (!filter.empty() && save_as.nFilterIndex > 0) 354 base::SplitString(filter, '\0', &filters); 355 std::wstring filter_selected; 356 if (!filters.empty()) 357 filter_selected = filters[(2 * (save_as.nFilterIndex - 1)) + 1]; 358 359 // Get the extension that was suggested to the user (when the Save As dialog 360 // was opened). For saving web pages, we skip this step since there may be 361 // 'extension characters' in the title of the web page. 362 std::wstring suggested_ext; 363 if (!ignore_suggested_ext) 364 suggested_ext = GetExtensionWithoutLeadingDot(suggested_path.Extension()); 365 366 // If we can't get the extension from the suggested_name, we use the default 367 // extension passed in. This is to cover cases like when saving a web page, 368 // where we get passed in a name without an extension and a default extension 369 // along with it. 370 if (suggested_ext.empty()) 371 suggested_ext = def_ext; 372 373 *final_name = 374 ui::AppendExtensionIfNeeded(*final_name, filter_selected, suggested_ext); 375 return true; 376} 377 378// Prompt the user for location to save a file. 'suggested_name' is a full path 379// that gives the dialog box a hint as to how to initialize itself. 380// For example, a 'suggested_name' of: 381// "C:\Documents and Settings\jojo\My Documents\picture.png" 382// will start the dialog in the "C:\Documents and Settings\jojo\My Documents\" 383// directory, and filter for .png file types. 384// 'owner' is the window to which the dialog box is modal, NULL for a modeless 385// dialog box. 386// On success, returns true and 'final_name' contains the full path of the file 387// that the user chose. On error, returns false, and 'final_name' is not 388// modified. 389bool SaveFileAs(HWND owner, 390 const std::wstring& suggested_name, 391 std::wstring* final_name) { 392 std::wstring file_ext = 393 base::FilePath(suggested_name).Extension().insert(0, L"*"); 394 std::wstring filter = FormatFilterForExtensions( 395 std::vector<std::wstring>(1, file_ext), 396 std::vector<std::wstring>(), 397 true); 398 unsigned index = 1; 399 return SaveFileAsWithFilter(owner, 400 suggested_name, 401 filter, 402 L"", 403 false, 404 &index, 405 final_name); 406} 407 408// Implementation of SelectFileDialog that shows a Windows common dialog for 409// choosing a file or folder. 410class SelectFileDialogImpl : public ui::SelectFileDialog, 411 public ui::BaseShellDialogImpl { 412 public: 413 explicit SelectFileDialogImpl(Listener* listener, 414 ui::SelectFilePolicy* policy); 415 416 // BaseShellDialog implementation: 417 virtual bool IsRunning(gfx::NativeWindow owning_hwnd) const OVERRIDE; 418 virtual void ListenerDestroyed() OVERRIDE; 419 420 protected: 421 // SelectFileDialog implementation: 422 virtual void SelectFileImpl( 423 Type type, 424 const base::string16& title, 425 const base::FilePath& default_path, 426 const FileTypeInfo* file_types, 427 int file_type_index, 428 const base::FilePath::StringType& default_extension, 429 gfx::NativeWindow owning_window, 430 void* params) OVERRIDE; 431 432 private: 433 virtual ~SelectFileDialogImpl(); 434 435 // A struct for holding all the state necessary for displaying a Save dialog. 436 struct ExecuteSelectParams { 437 ExecuteSelectParams(Type type, 438 const std::wstring& title, 439 const base::FilePath& default_path, 440 const FileTypeInfo* file_types, 441 int file_type_index, 442 const std::wstring& default_extension, 443 RunState run_state, 444 HWND owner, 445 void* params) 446 : type(type), 447 title(title), 448 default_path(default_path), 449 file_type_index(file_type_index), 450 default_extension(default_extension), 451 run_state(run_state), 452 ui_proxy(base::MessageLoopForUI::current()->message_loop_proxy()), 453 owner(owner), 454 params(params) { 455 if (file_types) 456 this->file_types = *file_types; 457 } 458 SelectFileDialog::Type type; 459 std::wstring title; 460 base::FilePath default_path; 461 FileTypeInfo file_types; 462 int file_type_index; 463 std::wstring default_extension; 464 RunState run_state; 465 scoped_refptr<base::MessageLoopProxy> ui_proxy; 466 HWND owner; 467 void* params; 468 }; 469 470 // Shows the file selection dialog modal to |owner| and calls the result 471 // back on the ui thread. Run on the dialog thread. 472 void ExecuteSelectFile(const ExecuteSelectParams& params); 473 474 // Notifies the listener that a folder was chosen. Run on the ui thread. 475 void FileSelected(const base::FilePath& path, int index, 476 void* params, RunState run_state); 477 478 // Notifies listener that multiple files were chosen. Run on the ui thread. 479 void MultiFilesSelected(const std::vector<base::FilePath>& paths, 480 void* params, 481 RunState run_state); 482 483 // Notifies the listener that no file was chosen (the action was canceled). 484 // Run on the ui thread. 485 void FileNotSelected(void* params, RunState run_state); 486 487 // Runs a Folder selection dialog box, passes back the selected folder in 488 // |path| and returns true if the user clicks OK. If the user cancels the 489 // dialog box the value in |path| is not modified and returns false. |title| 490 // is the user-supplied title text to show for the dialog box. Run on the 491 // dialog thread. 492 bool RunSelectFolderDialog(const std::wstring& title, 493 HWND owner, 494 base::FilePath* path); 495 496 // Runs an Open file dialog box, with similar semantics for input paramaters 497 // as RunSelectFolderDialog. 498 bool RunOpenFileDialog(const std::wstring& title, 499 const std::wstring& filters, 500 HWND owner, 501 base::FilePath* path); 502 503 // Runs an Open file dialog box that supports multi-select, with similar 504 // semantics for input paramaters as RunOpenFileDialog. 505 bool RunOpenMultiFileDialog(const std::wstring& title, 506 const std::wstring& filter, 507 HWND owner, 508 std::vector<base::FilePath>* paths); 509 510 // The callback function for when the select folder dialog is opened. 511 static int CALLBACK BrowseCallbackProc(HWND window, UINT message, 512 LPARAM parameter, 513 LPARAM data); 514 515 virtual bool HasMultipleFileTypeChoicesImpl() OVERRIDE; 516 517 // Returns the filter to be used while displaying the open/save file dialog. 518 // This is computed from the extensions for the file types being opened. 519 base::string16 GetFilterForFileTypes(const FileTypeInfo& file_types); 520 521 bool has_multiple_file_type_choices_; 522 523 DISALLOW_COPY_AND_ASSIGN(SelectFileDialogImpl); 524}; 525 526SelectFileDialogImpl::SelectFileDialogImpl(Listener* listener, 527 ui::SelectFilePolicy* policy) 528 : SelectFileDialog(listener, policy), 529 BaseShellDialogImpl(), 530 has_multiple_file_type_choices_(false) { 531} 532 533SelectFileDialogImpl::~SelectFileDialogImpl() { 534} 535 536void SelectFileDialogImpl::SelectFileImpl( 537 Type type, 538 const base::string16& title, 539 const base::FilePath& default_path, 540 const FileTypeInfo* file_types, 541 int file_type_index, 542 const base::FilePath::StringType& default_extension, 543 gfx::NativeWindow owning_window, 544 void* params) { 545 has_multiple_file_type_choices_ = 546 file_types ? file_types->extensions.size() > 1 : true; 547#if defined(USE_AURA) 548 // If the owning_window passed in is in metro then we need to forward the 549 // file open/save operations to metro. 550 if (GetShellDialogsDelegate() && 551 GetShellDialogsDelegate()->IsWindowInMetro(owning_window)) { 552 if (type == SELECT_SAVEAS_FILE) { 553 aura::HandleSaveFile( 554 UTF16ToWide(title), 555 default_path, 556 GetFilterForFileTypes(*file_types), 557 file_type_index, 558 default_extension, 559 base::Bind(&ui::SelectFileDialog::Listener::FileSelected, 560 base::Unretained(listener_)), 561 base::Bind(&ui::SelectFileDialog::Listener::FileSelectionCanceled, 562 base::Unretained(listener_))); 563 return; 564 } else if (type == SELECT_OPEN_FILE) { 565 aura::HandleOpenFile( 566 UTF16ToWide(title), 567 default_path, 568 GetFilterForFileTypes(*file_types), 569 base::Bind(&ui::SelectFileDialog::Listener::FileSelected, 570 base::Unretained(listener_)), 571 base::Bind(&ui::SelectFileDialog::Listener::FileSelectionCanceled, 572 base::Unretained(listener_))); 573 return; 574 } else if (type == SELECT_OPEN_MULTI_FILE) { 575 aura::HandleOpenMultipleFiles( 576 UTF16ToWide(title), 577 default_path, 578 GetFilterForFileTypes(*file_types), 579 base::Bind(&ui::SelectFileDialog::Listener::MultiFilesSelected, 580 base::Unretained(listener_)), 581 base::Bind(&ui::SelectFileDialog::Listener::FileSelectionCanceled, 582 base::Unretained(listener_))); 583 return; 584 } else if (type == SELECT_FOLDER || type == SELECT_UPLOAD_FOLDER) { 585 base::string16 title_string = title; 586 if (type == SELECT_UPLOAD_FOLDER && title_string.empty()) { 587 // If it's for uploading don't use default dialog title to 588 // make sure we clearly tell it's for uploading. 589 title_string = l10n_util::GetStringUTF16( 590 IDS_SELECT_UPLOAD_FOLDER_DIALOG_TITLE); 591 } 592 aura::HandleSelectFolder( 593 UTF16ToWide(title_string), 594 base::Bind(&ui::SelectFileDialog::Listener::FileSelected, 595 base::Unretained(listener_)), 596 base::Bind(&ui::SelectFileDialog::Listener::FileSelectionCanceled, 597 base::Unretained(listener_))); 598 return; 599 } 600 } 601 HWND owner = owning_window 602 ? owning_window->GetRootWindow()->GetAcceleratedWidget() : NULL; 603#else 604 HWND owner = owning_window; 605#endif 606 ExecuteSelectParams execute_params(type, UTF16ToWide(title), default_path, 607 file_types, file_type_index, 608 default_extension, BeginRun(owner), 609 owner, params); 610 execute_params.run_state.dialog_thread->message_loop()->PostTask( 611 FROM_HERE, 612 base::Bind(&SelectFileDialogImpl::ExecuteSelectFile, this, 613 execute_params)); 614} 615 616bool SelectFileDialogImpl::HasMultipleFileTypeChoicesImpl() { 617 return has_multiple_file_type_choices_; 618} 619 620bool SelectFileDialogImpl::IsRunning(gfx::NativeWindow owning_hwnd) const { 621#if defined(USE_AURA) 622 HWND owner = owning_hwnd->GetRootWindow()->GetAcceleratedWidget(); 623#else 624 HWND owner = owning_hwnd; 625#endif 626 return listener_ && IsRunningDialogForOwner(owner); 627} 628 629void SelectFileDialogImpl::ListenerDestroyed() { 630 // Our associated listener has gone away, so we shouldn't call back to it if 631 // our worker thread returns after the listener is dead. 632 listener_ = NULL; 633} 634 635void SelectFileDialogImpl::ExecuteSelectFile( 636 const ExecuteSelectParams& params) { 637 base::string16 filter = GetFilterForFileTypes(params.file_types); 638 639 base::FilePath path = params.default_path; 640 bool success = false; 641 unsigned filter_index = params.file_type_index; 642 if (params.type == SELECT_FOLDER || params.type == SELECT_UPLOAD_FOLDER) { 643 std::wstring title = params.title; 644 if (title.empty() && params.type == SELECT_UPLOAD_FOLDER) { 645 // If it's for uploading don't use default dialog title to 646 // make sure we clearly tell it's for uploading. 647 title = UTF16ToWide( 648 l10n_util::GetStringUTF16(IDS_SELECT_UPLOAD_FOLDER_DIALOG_TITLE)); 649 } 650 success = RunSelectFolderDialog(title, 651 params.run_state.owner, 652 &path); 653 } else if (params.type == SELECT_SAVEAS_FILE) { 654 std::wstring path_as_wstring = path.value(); 655 success = SaveFileAsWithFilter(params.run_state.owner, 656 params.default_path.value(), filter, 657 params.default_extension, false, &filter_index, &path_as_wstring); 658 if (success) 659 path = base::FilePath(path_as_wstring); 660 DisableOwner(params.run_state.owner); 661 } else if (params.type == SELECT_OPEN_FILE) { 662 success = RunOpenFileDialog(params.title, filter, 663 params.run_state.owner, &path); 664 } else if (params.type == SELECT_OPEN_MULTI_FILE) { 665 std::vector<base::FilePath> paths; 666 if (RunOpenMultiFileDialog(params.title, filter, 667 params.run_state.owner, &paths)) { 668 params.ui_proxy->PostTask( 669 FROM_HERE, 670 base::Bind(&SelectFileDialogImpl::MultiFilesSelected, this, paths, 671 params.params, params.run_state)); 672 return; 673 } 674 } 675 676 if (success) { 677 params.ui_proxy->PostTask( 678 FROM_HERE, 679 base::Bind(&SelectFileDialogImpl::FileSelected, this, path, 680 filter_index, params.params, params.run_state)); 681 } else { 682 params.ui_proxy->PostTask( 683 FROM_HERE, 684 base::Bind(&SelectFileDialogImpl::FileNotSelected, this, params.params, 685 params.run_state)); 686 } 687} 688 689void SelectFileDialogImpl::FileSelected(const base::FilePath& selected_folder, 690 int index, 691 void* params, 692 RunState run_state) { 693 if (listener_) 694 listener_->FileSelected(selected_folder, index, params); 695 EndRun(run_state); 696} 697 698void SelectFileDialogImpl::MultiFilesSelected( 699 const std::vector<base::FilePath>& selected_files, 700 void* params, 701 RunState run_state) { 702 if (listener_) 703 listener_->MultiFilesSelected(selected_files, params); 704 EndRun(run_state); 705} 706 707void SelectFileDialogImpl::FileNotSelected(void* params, RunState run_state) { 708 if (listener_) 709 listener_->FileSelectionCanceled(params); 710 EndRun(run_state); 711} 712 713int CALLBACK SelectFileDialogImpl::BrowseCallbackProc(HWND window, 714 UINT message, 715 LPARAM parameter, 716 LPARAM data) { 717 if (message == BFFM_INITIALIZED) { 718 // WParam is TRUE since passing a path. 719 // data lParam member of the BROWSEINFO structure. 720 SendMessage(window, BFFM_SETSELECTION, TRUE, (LPARAM)data); 721 } 722 return 0; 723} 724 725bool SelectFileDialogImpl::RunSelectFolderDialog(const std::wstring& title, 726 HWND owner, 727 base::FilePath* path) { 728 DCHECK(path); 729 730 wchar_t dir_buffer[MAX_PATH + 1]; 731 732 bool result = false; 733 BROWSEINFO browse_info = {0}; 734 browse_info.hwndOwner = owner; 735 browse_info.lpszTitle = title.c_str(); 736 browse_info.pszDisplayName = dir_buffer; 737 browse_info.ulFlags = BIF_USENEWUI | BIF_RETURNONLYFSDIRS; 738 739 if (path->value().length()) { 740 // Highlight the current value. 741 browse_info.lParam = (LPARAM)path->value().c_str(); 742 browse_info.lpfn = &BrowseCallbackProc; 743 } 744 745 LPITEMIDLIST list = SHBrowseForFolder(&browse_info); 746 DisableOwner(owner); 747 if (list) { 748 STRRET out_dir_buffer; 749 ZeroMemory(&out_dir_buffer, sizeof(out_dir_buffer)); 750 out_dir_buffer.uType = STRRET_WSTR; 751 base::win::ScopedComPtr<IShellFolder> shell_folder; 752 if (SHGetDesktopFolder(shell_folder.Receive()) == NOERROR) { 753 HRESULT hr = shell_folder->GetDisplayNameOf(list, SHGDN_FORPARSING, 754 &out_dir_buffer); 755 if (SUCCEEDED(hr) && out_dir_buffer.uType == STRRET_WSTR) { 756 *path = base::FilePath(out_dir_buffer.pOleStr); 757 CoTaskMemFree(out_dir_buffer.pOleStr); 758 result = true; 759 } else { 760 // Use old way if we don't get what we want. 761 wchar_t old_out_dir_buffer[MAX_PATH + 1]; 762 if (SHGetPathFromIDList(list, old_out_dir_buffer)) { 763 *path = base::FilePath(old_out_dir_buffer); 764 result = true; 765 } 766 } 767 768 // According to MSDN, win2000 will not resolve shortcuts, so we do it 769 // ourself. 770 base::win::ResolveShortcut(*path, path, NULL); 771 } 772 CoTaskMemFree(list); 773 } 774 return result; 775} 776 777bool SelectFileDialogImpl::RunOpenFileDialog( 778 const std::wstring& title, 779 const std::wstring& filter, 780 HWND owner, 781 base::FilePath* path) { 782 OPENFILENAME ofn; 783 // We must do this otherwise the ofn's FlagsEx may be initialized to random 784 // junk in release builds which can cause the Places Bar not to show up! 785 ZeroMemory(&ofn, sizeof(ofn)); 786 ofn.lStructSize = sizeof(ofn); 787 ofn.hwndOwner = owner; 788 789 wchar_t filename[MAX_PATH]; 790 // According to http://support.microsoft.com/?scid=kb;en-us;222003&x=8&y=12, 791 // The lpstrFile Buffer MUST be NULL Terminated. 792 filename[0] = 0; 793 // Define the dir in here to keep the string buffer pointer pointed to 794 // ofn.lpstrInitialDir available during the period of running the 795 // GetOpenFileName. 796 base::FilePath dir; 797 // Use lpstrInitialDir to specify the initial directory 798 if (!path->empty()) { 799 if (IsDirectory(*path)) { 800 ofn.lpstrInitialDir = path->value().c_str(); 801 } else { 802 dir = path->DirName(); 803 ofn.lpstrInitialDir = dir.value().c_str(); 804 // Only pure filename can be put in lpstrFile field. 805 base::wcslcpy(filename, path->BaseName().value().c_str(), 806 arraysize(filename)); 807 } 808 } 809 810 ofn.lpstrFile = filename; 811 ofn.nMaxFile = MAX_PATH; 812 813 // We use OFN_NOCHANGEDIR so that the user can rename or delete the directory 814 // without having to close Chrome first. 815 ofn.Flags = OFN_FILEMUSTEXIST | OFN_NOCHANGEDIR; 816 817 if (!filter.empty()) 818 ofn.lpstrFilter = filter.c_str(); 819 bool success = CallGetOpenFileName(&ofn); 820 DisableOwner(owner); 821 if (success) 822 *path = base::FilePath(filename); 823 return success; 824} 825 826bool SelectFileDialogImpl::RunOpenMultiFileDialog( 827 const std::wstring& title, 828 const std::wstring& filter, 829 HWND owner, 830 std::vector<base::FilePath>* paths) { 831 OPENFILENAME ofn; 832 // We must do this otherwise the ofn's FlagsEx may be initialized to random 833 // junk in release builds which can cause the Places Bar not to show up! 834 ZeroMemory(&ofn, sizeof(ofn)); 835 ofn.lStructSize = sizeof(ofn); 836 ofn.hwndOwner = owner; 837 838 scoped_ptr<wchar_t[]> filename(new wchar_t[UNICODE_STRING_MAX_CHARS]); 839 filename[0] = 0; 840 841 ofn.lpstrFile = filename.get(); 842 ofn.nMaxFile = UNICODE_STRING_MAX_CHARS; 843 // We use OFN_NOCHANGEDIR so that the user can rename or delete the directory 844 // without having to close Chrome first. 845 ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST | OFN_EXPLORER 846 | OFN_HIDEREADONLY | OFN_ALLOWMULTISELECT; 847 848 if (!filter.empty()) { 849 ofn.lpstrFilter = filter.c_str(); 850 } 851 852 bool success = CallGetOpenFileName(&ofn); 853 DisableOwner(owner); 854 if (success) { 855 std::vector<base::FilePath> files; 856 const wchar_t* selection = ofn.lpstrFile; 857 while (*selection) { // Empty string indicates end of list. 858 files.push_back(base::FilePath(selection)); 859 // Skip over filename and null-terminator. 860 selection += files.back().value().length() + 1; 861 } 862 if (files.empty()) { 863 success = false; 864 } else if (files.size() == 1) { 865 // When there is one file, it contains the path and filename. 866 paths->swap(files); 867 } else { 868 // Otherwise, the first string is the path, and the remainder are 869 // filenames. 870 std::vector<base::FilePath>::iterator path = files.begin(); 871 for (std::vector<base::FilePath>::iterator file = path + 1; 872 file != files.end(); ++file) { 873 paths->push_back(path->Append(*file)); 874 } 875 } 876 } 877 return success; 878} 879 880base::string16 SelectFileDialogImpl::GetFilterForFileTypes( 881 const FileTypeInfo& file_types) { 882 std::vector<base::string16> exts; 883 for (size_t i = 0; i < file_types.extensions.size(); ++i) { 884 const std::vector<base::string16>& inner_exts = file_types.extensions[i]; 885 base::string16 ext_string; 886 for (size_t j = 0; j < inner_exts.size(); ++j) { 887 if (!ext_string.empty()) 888 ext_string.push_back(L';'); 889 ext_string.append(L"*."); 890 ext_string.append(inner_exts[j]); 891 } 892 exts.push_back(ext_string); 893 } 894 return FormatFilterForExtensions( 895 exts, 896 file_types.extension_description_overrides, 897 file_types.include_all_files); 898} 899 900} // namespace 901 902namespace ui { 903 904// This function takes the output of a SaveAs dialog: a filename, a filter and 905// the extension originally suggested to the user (shown in the dialog box) and 906// returns back the filename with the appropriate extension tacked on. If the 907// user requests an unknown extension and is not using the 'All files' filter, 908// the suggested extension will be appended, otherwise we will leave the 909// filename unmodified. |filename| should contain the filename selected in the 910// SaveAs dialog box and may include the path, |filter_selected| should be 911// '*.something', for example '*.*' or it can be blank (which is treated as 912// *.*). |suggested_ext| should contain the extension without the dot (.) in 913// front, for example 'jpg'. 914std::wstring AppendExtensionIfNeeded( 915 const std::wstring& filename, 916 const std::wstring& filter_selected, 917 const std::wstring& suggested_ext) { 918 DCHECK(!filename.empty()); 919 std::wstring return_value = filename; 920 921 // If we wanted a specific extension, but the user's filename deleted it or 922 // changed it to something that the system doesn't understand, re-append. 923 // Careful: Checking net::GetMimeTypeFromExtension() will only find 924 // extensions with a known MIME type, which many "known" extensions on Windows 925 // don't have. So we check directly for the "known extension" registry key. 926 std::wstring file_extension( 927 GetExtensionWithoutLeadingDot(base::FilePath(filename).Extension())); 928 std::wstring key(L"." + file_extension); 929 if (!(filter_selected.empty() || filter_selected == L"*.*") && 930 !base::win::RegKey(HKEY_CLASSES_ROOT, key.c_str(), KEY_READ).Valid() && 931 file_extension != suggested_ext) { 932 if (return_value[return_value.length() - 1] != L'.') 933 return_value.append(L"."); 934 return_value.append(suggested_ext); 935 } 936 937 // Strip any trailing dots, which Windows doesn't allow. 938 size_t index = return_value.find_last_not_of(L'.'); 939 if (index < return_value.size() - 1) 940 return_value.resize(index + 1); 941 942 return return_value; 943} 944 945SelectFileDialog* CreateWinSelectFileDialog( 946 SelectFileDialog::Listener* listener, 947 SelectFilePolicy* policy) { 948 return new SelectFileDialogImpl(listener, policy); 949} 950 951} // namespace ui 952