Adds the ability for save dialogs to take a default extension....

chrome/common/win_util.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/common/win_util.h"
 
 #include <atlbase.h>
 #include <atlapp.h>
 #include <commdlg.h>
 #include <dwmapi.h>
@@ skipping 323 matching lines @@
 
     // Copy in the default file extension ("*.*") + NULL.
     size = all_ext.length() + 1;
     memcpy(&(*buffer)[offset], all_ext.c_str(), size * sizeof(wchar_t));
     offset += size;
   }
 
   (*buffer)[offset] = L'\0';  // Double NULL required.
 }
 
-bool SaveFileAs(HWND owner,
-                const std::wstring& suggested_name,
-                std::wstring* final_name) {
+std::wstring GetFileFilterFromPath(const std::wstring& file_name) {
   std::wstring reg_description;
-  std::wstring file_ext = file_util::GetFileExtensionFromPath(suggested_name);
+  std::wstring file_ext = file_util::GetFileExtensionFromPath(file_name);
   if (!file_ext.empty()) {
     file_ext = L"." + file_ext;
     GetRegistryDescriptionFromExtension(file_ext, &reg_description);
   }
 
   std::vector<wchar_t> filter;
   FormatSaveAsFilterForExtension(file_ext, reg_description, true, &filter);
+  return std::wstring(&filter[0], filter.size());
+}
 
+bool SaveFileAs(HWND owner,
+                const std::wstring& suggested_name,
+                std::wstring* final_name) {
+  std::wstring filter = GetFileFilterFromPath(suggested_name);
   unsigned index = 1;
   return SaveFileAsWithFilter(owner,
                               suggested_name,
-                              &filter[0],
+                              filter.c_str(),
                               L"",
                               &index,
                               final_name);
 }
 
 bool SaveFileAsWithFilter(HWND owner,
                           const std::wstring& suggested_name,
                           const wchar_t* filter,
                           const std::wstring& def_ext,
                           unsigned* index,
@@ skipping 12 matching lines @@
   base::wcslcpy(file_name, file_part.c_str(), arraysize(file_name));
 
   OPENFILENAME save_as;
   // We must do this otherwise the ofn's FlagsEx may be initialized to random
   // junk in release builds which can cause the Places Bar not to show up!
   ZeroMemory(&save_as, sizeof(save_as));
   save_as.lStructSize = sizeof(OPENFILENAME);
   save_as.hwndOwner = owner;
   save_as.hInstance = NULL;
 
-  save_as.lpstrFilter = &filter[0];
+  save_as.lpstrFilter = filter;
 
   save_as.lpstrCustomFilter = NULL;
   save_as.nMaxCustFilter = 0;
   save_as.nFilterIndex = *index;
   save_as.lpstrFile = file_name;
   save_as.nMaxFile = arraysize(file_name);
   save_as.lpstrFileTitle = NULL;
   save_as.nMaxFileTitle = 0;
 
   // Set up the initial directory for the dialog.
@@ skipping 403 matching lines @@
 
 ChromeFont GetWindowTitleFont() {
   NONCLIENTMETRICS ncm;
   win_util::GetNonClientMetrics(&ncm);
   ScopedHFONT caption_font(CreateFontIndirect(&(ncm.lfCaptionFont)));
   return ChromeFont::CreateFont(caption_font);
 }
 
 }  // namespace win_util