src/chrome/browser/download/save_package_file_picker.cc

   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 "chrome/browser/download/save_package_file_picker.h"
   6
   7 #include "base/bind.h"
   8 #include "base/command_line.h"
   9 #include "base/i18n/file_util_icu.h"
  10 #include "base/metrics/histogram.h"
  11 #include "base/prefs/pref_member.h"
  12 #include "base/prefs/pref_service.h"
  13 #include "base/strings/utf_string_conversions.h"
  14 #include "chrome/browser/download/chrome_download_manager_delegate.h"
  15 #include "chrome/browser/download/download_prefs.h"
  16 #include "chrome/browser/platform_util.h"
  17 #include "chrome/browser/profiles/profile.h"
  18 #include "chrome/browser/ui/chrome_select_file_policy.h"
  19 #include "chrome/common/chrome_switches.h"
  20 #include "chrome/common/pref_names.h"
  21 #include "content/public/browser/download_manager.h"
  22 #include "content/public/browser/render_process_host.h"
  23 #include "content/public/browser/save_page_type.h"
  24 #include "content/public/browser/web_contents.h"
  25 #include "content/public/browser/web_contents_view.h"
  26 #include "grit/generated_resources.h"
  27 #include "ui/base/l10n/l10n_util.h"
  28
  29 #if defined(OS_CHROMEOS)
  30 #include "chrome/browser/chromeos/drive/download_handler.h"
  31 #include "chrome/browser/chromeos/drive/file_system_util.h"
  32 #endif
  33
  34 using content::RenderProcessHost;
  35 using content::SavePageType;
  36 using content::WebContents;
  37
  38 namespace {
  39
  40 // If false, we don't prompt the user as to where to save the file.  This
  41 // exists only for testing.
  42 bool g_should_prompt_for_filename = true;
  43
  44 // Used for mapping between SavePageType constants and the indexes above.
  45 const SavePageType kIndexToSaveType[] = {
  46   content::SAVE_PAGE_TYPE_UNKNOWN,
  47   content::SAVE_PAGE_TYPE_AS_ONLY_HTML,
  48   content::SAVE_PAGE_TYPE_AS_COMPLETE_HTML,
  49 };
  50
  51 int SavePackageTypeToIndex(SavePageType type) {
  52   for (size_t i = 0; i < arraysize(kIndexToSaveType); ++i) {
  53     if (kIndexToSaveType[i] == type)
  54       return i;
  55   }
  56   NOTREACHED();
  57   return -1;
  58 }
  59
  60 // Indexes used for specifying which element in the extensions dropdown
  61 // the user chooses when picking a save type.
  62 const int kSelectFileHtmlOnlyIndex = 1;
  63 const int kSelectFileCompleteIndex = 2;
  64
  65 // Used for mapping between the IDS_ string identifiers and the indexes above.
  66 const int kIndexToIDS[] = {
  67   0, IDS_SAVE_PAGE_DESC_HTML_ONLY, IDS_SAVE_PAGE_DESC_COMPLETE,
  68 };
  69
  70 void OnSavePackageDownloadCreated(content::DownloadItem* download) {
  71   ChromeDownloadManagerDelegate::DisableSafeBrowsing(download);
  72 }
  73
  74 #if defined(OS_CHROMEOS)
  75 void OnSavePackageDownloadCreatedChromeOS(
  76     Profile* profile,
  77     const base::FilePath& drive_path,
  78     content::DownloadItem* download) {
  79   drive::DownloadHandler::GetForProfile(profile)->SetDownloadParams(
  80       drive_path, download);
  81   OnSavePackageDownloadCreated(download);
  82 }
  83
  84 // Trampoline callback between SubstituteDriveDownloadPath() and |callback|.
  85 void ContinueSettingUpDriveDownload(
  86     const content::SavePackagePathPickedCallback& callback,
  87     content::SavePageType save_type,
  88     Profile* profile,
  89     const base::FilePath& drive_path,
  90     const base::FilePath& drive_tmp_download_path) {
  91   if (drive_tmp_download_path.empty())  // Substitution failed.
  92     return;
  93   callback.Run(drive_tmp_download_path, save_type, base::Bind(
  94       &OnSavePackageDownloadCreatedChromeOS, profile, drive_path));
  95 }
  96 #endif
  97
  98 }  // anonymous namespace
  99
 100 bool SavePackageFilePicker::ShouldSaveAsMHTML() const {
 101 #if !defined(OS_CHROMEOS)
 102   if (!CommandLine::ForCurrentProcess()->HasSwitch(
 103              switches::kSavePageAsMHTML))
 104     return false;
 105 #endif
 106   return can_save_as_complete_;
 107 }
 108
 109 SavePackageFilePicker::SavePackageFilePicker(
 110     content::WebContents* web_contents,
 111     const base::FilePath& suggested_path,
 112     const base::FilePath::StringType& default_extension,
 113     bool can_save_as_complete,
 114     DownloadPrefs* download_prefs,
 115     const content::SavePackagePathPickedCallback& callback)
 116     : render_process_id_(web_contents->GetRenderProcessHost()->GetID()),
 117       can_save_as_complete_(can_save_as_complete),
 118       download_prefs_(download_prefs),
 119       callback_(callback) {
 120   base::FilePath suggested_path_copy = suggested_path;
 121   base::FilePath::StringType default_extension_copy = default_extension;
 122   int file_type_index = 0;
 123   ui::SelectFileDialog::FileTypeInfo file_type_info;
 124
 125 #if defined(OS_CHROMEOS)
 126   file_type_info.support_drive = true;
 127 #else
 128   file_type_index = SavePackageTypeToIndex(
 129       static_cast<SavePageType>(download_prefs_->save_file_type()));
 130   DCHECK_NE(-1, file_type_index);
 131 #endif
 132
 133   // TODO(benjhayden): Merge the first branch with the second when all of the
 134   // platform-specific file selection dialog implementations fully support
 135   // switching save-as file formats, and remove the flag/switch.
 136   if (ShouldSaveAsMHTML()) {
 137     default_extension_copy = FILE_PATH_LITERAL("mhtml");
 138     suggested_path_copy = suggested_path_copy.ReplaceExtension(
 139         default_extension_copy);
 140   } else if (can_save_as_complete_) {
 141     // NOTE: this branch will never run on chromeos because ShouldSaveAsHTML()
 142     // == can_save_as_complete_ on chromeos.
 143     bool add_extra_extension = false;
 144     base::FilePath::StringType extra_extension;
 145     if (!suggested_path_copy.Extension().empty() &&
 146         !suggested_path_copy.MatchesExtension(FILE_PATH_LITERAL(".htm")) &&
 147         !suggested_path_copy.MatchesExtension(FILE_PATH_LITERAL(".html"))) {
 148       add_extra_extension = true;
 149       extra_extension = suggested_path_copy.Extension().substr(1);
 150     }
 151
 152     static const size_t kNumberExtensions = arraysize(kIndexToIDS) - 1;
 153     file_type_info.extensions.resize(kNumberExtensions);
 154     file_type_info.extension_description_overrides.resize(kNumberExtensions);
 155
 156     // Indices into kIndexToIDS are 1-based whereas indices into
 157     // file_type_info.extensions are 0-based. Hence the '-1's.
 158     // If you switch these resize()/direct-assignment patterns to push_back(),
 159     // then you risk breaking FileSelected()'s use of |index|.
 160
 161     file_type_info.extension_description_overrides[
 162       kSelectFileHtmlOnlyIndex - 1] = l10n_util::GetStringUTF16(kIndexToIDS[
 163           kSelectFileHtmlOnlyIndex]);
 164     file_type_info.extensions[kSelectFileHtmlOnlyIndex - 1].push_back(
 165         FILE_PATH_LITERAL("htm"));
 166     file_type_info.extensions[kSelectFileHtmlOnlyIndex - 1].push_back(
 167         FILE_PATH_LITERAL("html"));
 168     if (add_extra_extension) {
 169       file_type_info.extensions[kSelectFileHtmlOnlyIndex - 1].push_back(
 170           extra_extension);
 171     }
 172
 173     file_type_info.extension_description_overrides[
 174       kSelectFileCompleteIndex - 1] = l10n_util::GetStringUTF16(kIndexToIDS[
 175           kSelectFileCompleteIndex]);
 176     file_type_info.extensions[kSelectFileCompleteIndex - 1].push_back(
 177         FILE_PATH_LITERAL("htm"));
 178     file_type_info.extensions[kSelectFileCompleteIndex - 1].push_back(
 179         FILE_PATH_LITERAL("html"));
 180     if (add_extra_extension) {
 181       file_type_info.extensions[kSelectFileCompleteIndex - 1].push_back(
 182           extra_extension);
 183     }
 184
 185     file_type_info.include_all_files = false;
 186   } else {
 187     // The contents can not be saved as complete-HTML, so do not show the file
 188     // filters.
 189     file_type_info.extensions.resize(1);
 190     file_type_info.extensions[0].push_back(suggested_path_copy.Extension());
 191
 192     if (!file_type_info.extensions[0][0].empty()) {
 193       // Drop the .
 194       file_type_info.extensions[0][0].erase(0, 1);
 195     }
 196
 197     file_type_info.include_all_files = true;
 198     file_type_index = 1;
 199   }
 200
 201   if (g_should_prompt_for_filename) {
 202     select_file_dialog_ = ui::SelectFileDialog::Create(
 203         this, new ChromeSelectFilePolicy(web_contents));
 204     select_file_dialog_->SelectFile(
 205         ui::SelectFileDialog::SELECT_SAVEAS_FILE,
 206         string16(),
 207         suggested_path_copy,
 208         &file_type_info,
 209         file_type_index,
 210         default_extension_copy,
 211         platform_util::GetTopLevel(web_contents->GetView()->GetNativeView()),
 212         NULL);
 213   } else {
 214     // Just use 'suggested_path_copy' instead of opening the dialog prompt.
 215     // Go through FileSelected() for consistency.
 216     FileSelected(suggested_path_copy, file_type_index, NULL);
 217   }
 218 }
 219
 220 SavePackageFilePicker::~SavePackageFilePicker() {
 221 }
 222
 223 void SavePackageFilePicker::SetShouldPromptUser(bool should_prompt) {
 224   g_should_prompt_for_filename = should_prompt;
 225 }
 226
 227 void SavePackageFilePicker::FileSelected(
 228     const base::FilePath& path, int index, void* unused_params) {
 229   scoped_ptr<SavePackageFilePicker> delete_this(this);
 230   RenderProcessHost* process = RenderProcessHost::FromID(render_process_id_);
 231   if (!process)
 232     return;
 233   SavePageType save_type = content::SAVE_PAGE_TYPE_UNKNOWN;
 234
 235   if (ShouldSaveAsMHTML()) {
 236     save_type = content::SAVE_PAGE_TYPE_AS_MHTML;
 237   } else {
 238 #if defined(OS_CHROMEOS)
 239     save_type = content::SAVE_PAGE_TYPE_AS_ONLY_HTML;
 240 #else
 241     // The option index is not zero-based.
 242     DCHECK(index >= kSelectFileHtmlOnlyIndex &&
 243            index <= kSelectFileCompleteIndex);
 244     save_type = kIndexToSaveType[index];
 245     if (select_file_dialog_.get() &&
 246         select_file_dialog_->HasMultipleFileTypeChoices())
 247       download_prefs_->SetSaveFileType(save_type);
 248 #endif
 249   }
 250
 251   UMA_HISTOGRAM_ENUMERATION("Download.SavePageType",
 252                             save_type,
 253                             content::SAVE_PAGE_TYPE_MAX);
 254
 255   base::FilePath path_copy(path);
 256   file_util::NormalizeFileNameEncoding(&path_copy);
 257
 258   download_prefs_->SetSaveFilePath(path_copy.DirName());
 259
 260 #if defined(OS_CHROMEOS)
 261   if (drive::util::IsUnderDriveMountPoint(path_copy)) {
 262     // Here's a map to the callback chain:
 263     // SubstituteDriveDownloadPath ->
 264     //   ContinueSettingUpDriveDownload ->
 265     //     callback_ = SavePackage::OnPathPicked ->
 266     //       download_created_callback = OnSavePackageDownloadCreatedChromeOS
 267     Profile* profile = Profile::FromBrowserContext(
 268         process->GetBrowserContext());
 269     drive::DownloadHandler* drive_download_handler =
 270         drive::DownloadHandler::GetForProfile(profile);
 271     drive_download_handler->SubstituteDriveDownloadPath(
 272         path_copy, NULL, base::Bind(&ContinueSettingUpDriveDownload,
 273                                     callback_,
 274                                     save_type,
 275                                     profile,
 276                                     path_copy));
 277     return;
 278   }
 279 #endif
 280
 281   callback_.Run(path_copy, save_type,
 282                 base::Bind(&OnSavePackageDownloadCreated));
 283 }
 284
 285 void SavePackageFilePicker::FileSelectionCanceled(void* unused_params) {
 286   delete this;
 287 }