src/chrome/browser/ui/webui/print_preview/print_preview_ui.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/ui/webui/print_preview/print_preview_ui.h"
   6
   7 #include <map>
   8 #include <vector>
   9
  10 #include "base/id_map.h"
  11 #include "base/lazy_instance.h"
  12 #include "base/memory/ref_counted_memory.h"
  13 #include "base/metrics/histogram.h"
  14 #include "base/strings/string_number_conversions.h"
  15 #include "base/strings/string_split.h"
  16 #include "base/strings/string_util.h"
  17 #include "base/strings/utf_string_conversions.h"
  18 #include "base/synchronization/lock.h"
  19 #include "base/values.h"
  20 #include "chrome/browser/browser_process.h"
  21 #include "chrome/browser/printing/background_printing_manager.h"
  22 #include "chrome/browser/printing/print_preview_data_service.h"
  23 #include "chrome/browser/profiles/profile.h"
  24 #include "chrome/browser/ui/webui/metrics_handler.h"
  25 #include "chrome/browser/ui/webui/print_preview/print_preview_handler.h"
  26 #include "chrome/browser/ui/webui/theme_source.h"
  27 #include "chrome/common/print_messages.h"
  28 #include "chrome/common/url_constants.h"
  29 #include "chrome/grit/chromium_strings.h"
  30 #include "chrome/grit/generated_resources.h"
  31 #include "chrome/grit/google_chrome_strings.h"
  32 #include "content/public/browser/url_data_source.h"
  33 #include "content/public/browser/web_contents.h"
  34 #include "content/public/browser/web_ui_data_source.h"
  35 #include "grit/browser_resources.h"
  36 #include "grit/components_strings.h"
  37 #include "printing/page_size_margins.h"
  38 #include "printing/print_job_constants.h"
  39 #include "ui/base/l10n/l10n_util.h"
  40 #include "ui/gfx/rect.h"
  41 #include "ui/web_dialogs/web_dialog_delegate.h"
  42 #include "ui/web_dialogs/web_dialog_ui.h"
  43
  44 using content::WebContents;
  45 using printing::PageSizeMargins;
  46
  47 namespace {
  48
  49 #if defined(OS_MACOSX)
  50 // U+0028 U+21E7 U+2318 U+0050 U+0029 in UTF8
  51 const char kBasicPrintShortcut[] = "\x28\xE2\x8c\xA5\xE2\x8C\x98\x50\x29";
  52 #elif defined(OS_WIN) || defined(OS_CHROMEOS)
  53 const char kBasicPrintShortcut[] = "(Ctrl+Shift+P)";
  54 #else
  55 const char kBasicPrintShortcut[] = "(Shift+Ctrl+P)";
  56 #endif
  57
  58 // Thread-safe wrapper around a std::map to keep track of mappings from
  59 // PrintPreviewUI IDs to most recent print preview request IDs.
  60 class PrintPreviewRequestIdMapWithLock {
  61  public:
  62   PrintPreviewRequestIdMapWithLock() {}
  63   ~PrintPreviewRequestIdMapWithLock() {}
  64
  65   // Gets the value for |preview_id|.
  66   // Returns true and sets |out_value| on success.
  67   bool Get(int32 preview_id, int* out_value) {
  68     base::AutoLock lock(lock_);
  69     PrintPreviewRequestIdMap::const_iterator it = map_.find(preview_id);
  70     if (it == map_.end())
  71       return false;
  72     *out_value = it->second;
  73     return true;
  74   }
  75
  76   // Sets the |value| for |preview_id|.
  77   void Set(int32 preview_id, int value) {
  78     base::AutoLock lock(lock_);
  79     map_[preview_id] = value;
  80   }
  81
  82   // Erases the entry for |preview_id|.
  83   void Erase(int32 preview_id) {
  84     base::AutoLock lock(lock_);
  85     map_.erase(preview_id);
  86   }
  87
  88  private:
  89   // Mapping from PrintPreviewUI ID to print preview request ID.
  90   typedef std::map<int, int> PrintPreviewRequestIdMap;
  91
  92   PrintPreviewRequestIdMap map_;
  93   base::Lock lock_;
  94
  95   DISALLOW_COPY_AND_ASSIGN(PrintPreviewRequestIdMapWithLock);
  96 };
  97
  98 // Written to on the UI thread, read from any thread.
  99 base::LazyInstance<PrintPreviewRequestIdMapWithLock>
 100     g_print_preview_request_id_map = LAZY_INSTANCE_INITIALIZER;
 101
 102 // PrintPreviewUI IDMap used to avoid exposing raw pointer addresses to WebUI.
 103 // Only accessed on the UI thread.
 104 base::LazyInstance<IDMap<PrintPreviewUI> >
 105     g_print_preview_ui_id_map = LAZY_INSTANCE_INITIALIZER;
 106
 107 // PrintPreviewUI serves data for chrome://print requests.
 108 //
 109 // The format for requesting PDF data is as follows:
 110 // chrome://print/<PrintPreviewUIID>/<PageIndex>/print.pdf
 111 //
 112 // Parameters (< > required):
 113 //    <PrintPreviewUIID> = PrintPreview UI ID
 114 //    <PageIndex> = Page index is zero-based or
 115 //                  |printing::COMPLETE_PREVIEW_DOCUMENT_INDEX| to represent
 116 //                  a print ready PDF.
 117 //
 118 // Example:
 119 //    chrome://print/123/10/print.pdf
 120 //
 121 // Requests to chrome://print with paths not ending in /print.pdf are used
 122 // to return the markup or other resources for the print preview page itself.
 123 bool HandleRequestCallback(
 124     const std::string& path,
 125     const content::WebUIDataSource::GotDataCallback& callback) {
 126   // ChromeWebUIDataSource handles most requests except for the print preview
 127   // data.
 128   if (!EndsWith(path, "/print.pdf", true))
 129     return false;
 130
 131   // Print Preview data.
 132   scoped_refptr<base::RefCountedBytes> data;
 133   std::vector<std::string> url_substr;
 134   base::SplitString(path, '/', &url_substr);
 135   int preview_ui_id = -1;
 136   int page_index = 0;
 137   if (url_substr.size() == 3 &&
 138       base::StringToInt(url_substr[0], &preview_ui_id),
 139       base::StringToInt(url_substr[1], &page_index) &&
 140       preview_ui_id >= 0) {
 141     PrintPreviewDataService::GetInstance()->GetDataEntry(
 142         preview_ui_id, page_index, &data);
 143   }
 144   if (data.get()) {
 145     callback.Run(data.get());
 146     return true;
 147   }
 148   // Invalid request.
 149   scoped_refptr<base::RefCountedBytes> empty_bytes(new base::RefCountedBytes);
 150   callback.Run(empty_bytes.get());
 151   return true;
 152 }
 153
 154 content::WebUIDataSource* CreatePrintPreviewUISource() {
 155   content::WebUIDataSource* source =
 156       content::WebUIDataSource::Create(chrome::kChromeUIPrintHost);
 157 #if defined(OS_CHROMEOS)
 158   source->AddLocalizedString("title",
 159                              IDS_PRINT_PREVIEW_GOOGLE_CLOUD_PRINT_TITLE);
 160 #else
 161   source->AddLocalizedString("title", IDS_PRINT_PREVIEW_TITLE);
 162 #endif
 163   source->AddLocalizedString("loading", IDS_PRINT_PREVIEW_LOADING);
 164   source->AddLocalizedString("noPlugin", IDS_PRINT_PREVIEW_NO_PLUGIN);
 165   source->AddLocalizedString("launchNativeDialog",
 166                              IDS_PRINT_PREVIEW_NATIVE_DIALOG);
 167   source->AddLocalizedString("previewFailed", IDS_PRINT_PREVIEW_FAILED);
 168   source->AddLocalizedString("invalidPrinterSettings",
 169                              IDS_PRINT_INVALID_PRINTER_SETTINGS);
 170   source->AddLocalizedString("printButton", IDS_PRINT_PREVIEW_PRINT_BUTTON);
 171   source->AddLocalizedString("saveButton", IDS_PRINT_PREVIEW_SAVE_BUTTON);
 172   source->AddLocalizedString("printing", IDS_PRINT_PREVIEW_PRINTING);
 173   source->AddLocalizedString("printingToPDFInProgress",
 174                              IDS_PRINT_PREVIEW_PRINTING_TO_PDF_IN_PROGRESS);
 175 #if defined(OS_MACOSX)
 176   source->AddLocalizedString("openingPDFInPreview",
 177                              IDS_PRINT_PREVIEW_OPENING_PDF_IN_PREVIEW);
 178 #endif
 179   source->AddLocalizedString("destinationLabel",
 180                              IDS_PRINT_PREVIEW_DESTINATION_LABEL);
 181   source->AddLocalizedString("copiesLabel", IDS_PRINT_PREVIEW_COPIES_LABEL);
 182   source->AddLocalizedString("examplePageRangeText",
 183                              IDS_PRINT_PREVIEW_EXAMPLE_PAGE_RANGE_TEXT);
 184   source->AddLocalizedString("layoutLabel", IDS_PRINT_PREVIEW_LAYOUT_LABEL);
 185   source->AddLocalizedString("optionAllPages",
 186                              IDS_PRINT_PREVIEW_OPTION_ALL_PAGES);
 187   source->AddLocalizedString("optionBw", IDS_PRINT_PREVIEW_OPTION_BW);
 188   source->AddLocalizedString("optionCollate", IDS_PRINT_PREVIEW_OPTION_COLLATE);
 189   source->AddLocalizedString("optionColor", IDS_PRINT_PREVIEW_OPTION_COLOR);
 190   source->AddLocalizedString("optionLandscape",
 191                              IDS_PRINT_PREVIEW_OPTION_LANDSCAPE);
 192   source->AddLocalizedString("optionPortrait",
 193                              IDS_PRINT_PREVIEW_OPTION_PORTRAIT);
 194   source->AddLocalizedString("optionTwoSided",
 195                              IDS_PRINT_PREVIEW_OPTION_TWO_SIDED);
 196   source->AddLocalizedString("pagesLabel", IDS_PRINT_PREVIEW_PAGES_LABEL);
 197   source->AddLocalizedString("pageRangeTextBox",
 198                              IDS_PRINT_PREVIEW_PAGE_RANGE_TEXT);
 199   source->AddLocalizedString("pageRangeRadio",
 200                              IDS_PRINT_PREVIEW_PAGE_RANGE_RADIO);
 201   source->AddLocalizedString("printToPDF", IDS_PRINT_PREVIEW_PRINT_TO_PDF);
 202   source->AddLocalizedString("printPreviewSummaryFormatShort",
 203                              IDS_PRINT_PREVIEW_SUMMARY_FORMAT_SHORT);
 204   source->AddLocalizedString("printPreviewSummaryFormatLong",
 205                              IDS_PRINT_PREVIEW_SUMMARY_FORMAT_LONG);
 206   source->AddLocalizedString("printPreviewSheetsLabelSingular",
 207                              IDS_PRINT_PREVIEW_SHEETS_LABEL_SINGULAR);
 208   source->AddLocalizedString("printPreviewSheetsLabelPlural",
 209                              IDS_PRINT_PREVIEW_SHEETS_LABEL_PLURAL);
 210   source->AddLocalizedString("printPreviewPageLabelSingular",
 211                              IDS_PRINT_PREVIEW_PAGE_LABEL_SINGULAR);
 212   source->AddLocalizedString("printPreviewPageLabelPlural",
 213                              IDS_PRINT_PREVIEW_PAGE_LABEL_PLURAL);
 214   const base::string16 shortcut_text(base::UTF8ToUTF16(kBasicPrintShortcut));
 215 #if !defined(OS_CHROMEOS)
 216   source->AddString(
 217       "systemDialogOption",
 218       l10n_util::GetStringFUTF16(
 219           IDS_PRINT_PREVIEW_SYSTEM_DIALOG_OPTION,
 220           shortcut_text));
 221 #endif
 222 #if defined(OS_MACOSX)
 223   source->AddLocalizedString("openPdfInPreviewOption",
 224                              IDS_PRINT_PREVIEW_OPEN_PDF_IN_PREVIEW_APP);
 225 #endif
 226   source->AddString(
 227       "printWithCloudPrintWait",
 228       l10n_util::GetStringFUTF16(
 229           IDS_PRINT_PREVIEW_PRINT_WITH_CLOUD_PRINT_WAIT,
 230           l10n_util::GetStringUTF16(IDS_GOOGLE_CLOUD_PRINT)));
 231   source->AddString(
 232       "noDestsPromoLearnMoreUrl",
 233       chrome::kCloudPrintNoDestinationsLearnMoreURL);
 234   source->AddLocalizedString("pageRangeInstruction",
 235                              IDS_PRINT_PREVIEW_PAGE_RANGE_INSTRUCTION);
 236   source->AddLocalizedString("copiesInstruction",
 237                              IDS_PRINT_PREVIEW_COPIES_INSTRUCTION);
 238   source->AddLocalizedString("incrementTitle",
 239                              IDS_PRINT_PREVIEW_INCREMENT_TITLE);
 240   source->AddLocalizedString("decrementTitle",
 241                              IDS_PRINT_PREVIEW_DECREMENT_TITLE);
 242   source->AddLocalizedString("printPagesLabel",
 243                              IDS_PRINT_PREVIEW_PRINT_PAGES_LABEL);
 244   source->AddLocalizedString("optionsLabel", IDS_PRINT_PREVIEW_OPTIONS_LABEL);
 245   source->AddLocalizedString("optionHeaderFooter",
 246                              IDS_PRINT_PREVIEW_OPTION_HEADER_FOOTER);
 247   source->AddLocalizedString("optionFitToPage",
 248                              IDS_PRINT_PREVIEW_OPTION_FIT_TO_PAGE);
 249   source->AddLocalizedString(
 250       "optionBackgroundColorsAndImages",
 251       IDS_PRINT_PREVIEW_OPTION_BACKGROUND_COLORS_AND_IMAGES);
 252   source->AddLocalizedString("optionSelectionOnly",
 253                              IDS_PRINT_PREVIEW_OPTION_SELECTION_ONLY);
 254   source->AddLocalizedString("marginsLabel", IDS_PRINT_PREVIEW_MARGINS_LABEL);
 255   source->AddLocalizedString("defaultMargins",
 256                              IDS_PRINT_PREVIEW_DEFAULT_MARGINS);
 257   source->AddLocalizedString("noMargins", IDS_PRINT_PREVIEW_NO_MARGINS);
 258   source->AddLocalizedString("customMargins", IDS_PRINT_PREVIEW_CUSTOM_MARGINS);
 259   source->AddLocalizedString("minimumMargins",
 260                              IDS_PRINT_PREVIEW_MINIMUM_MARGINS);
 261   source->AddLocalizedString("top", IDS_PRINT_PREVIEW_TOP_MARGIN_LABEL);
 262   source->AddLocalizedString("bottom", IDS_PRINT_PREVIEW_BOTTOM_MARGIN_LABEL);
 263   source->AddLocalizedString("left", IDS_PRINT_PREVIEW_LEFT_MARGIN_LABEL);
 264   source->AddLocalizedString("right", IDS_PRINT_PREVIEW_RIGHT_MARGIN_LABEL);
 265   source->AddLocalizedString("mediaSizeLabel",
 266                              IDS_PRINT_PREVIEW_MEDIA_SIZE_LABEL);
 267   source->AddLocalizedString("dpiLabel", IDS_PRINT_PREVIEW_DPI_LABEL);
 268   source->AddLocalizedString("dpiItemLabel", IDS_PRINT_PREVIEW_DPI_ITEM_LABEL);
 269   source->AddLocalizedString("nonIsotropicDpiItemLabel",
 270                              IDS_PRINT_PREVIEW_NON_ISOTROPIC_DPI_ITEM_LABEL);
 271   source->AddLocalizedString("destinationSearchTitle",
 272                              IDS_PRINT_PREVIEW_DESTINATION_SEARCH_TITLE);
 273   source->AddLocalizedString("accountSelectTitle",
 274                              IDS_PRINT_PREVIEW_ACCOUNT_SELECT_TITLE);
 275   source->AddLocalizedString("addAccountTitle",
 276                              IDS_PRINT_PREVIEW_ADD_ACCOUNT_TITLE);
 277   source->AddLocalizedString("cloudPrintPromotion",
 278                              IDS_PRINT_PREVIEW_CLOUD_PRINT_PROMOTION);
 279   source->AddLocalizedString("searchBoxPlaceholder",
 280                              IDS_PRINT_PREVIEW_SEARCH_BOX_PLACEHOLDER);
 281   source->AddLocalizedString("noDestinationsMessage",
 282                              IDS_PRINT_PREVIEW_NO_DESTINATIONS_MESSAGE);
 283   source->AddLocalizedString("showAllButtonText",
 284                              IDS_PRINT_PREVIEW_SHOW_ALL_BUTTON_TEXT);
 285   source->AddLocalizedString("destinationCount",
 286                              IDS_PRINT_PREVIEW_DESTINATION_COUNT);
 287   source->AddLocalizedString("recentDestinationsTitle",
 288                              IDS_PRINT_PREVIEW_RECENT_DESTINATIONS_TITLE);
 289   source->AddLocalizedString("localDestinationsTitle",
 290                              IDS_PRINT_PREVIEW_LOCAL_DESTINATIONS_TITLE);
 291   source->AddLocalizedString("cloudDestinationsTitle",
 292                              IDS_PRINT_PREVIEW_CLOUD_DESTINATIONS_TITLE);
 293   source->AddLocalizedString("manage", IDS_PRINT_PREVIEW_MANAGE);
 294   source->AddLocalizedString("setupCloudPrinters",
 295                              IDS_PRINT_PREVIEW_SETUP_CLOUD_PRINTERS);
 296   source->AddLocalizedString("changeDestination",
 297                              IDS_PRINT_PREVIEW_CHANGE_DESTINATION);
 298   source->AddLocalizedString("offlineForYear",
 299                              IDS_PRINT_PREVIEW_OFFLINE_FOR_YEAR);
 300   source->AddLocalizedString("offlineForMonth",
 301                              IDS_PRINT_PREVIEW_OFFLINE_FOR_MONTH);
 302   source->AddLocalizedString("offlineForWeek",
 303                              IDS_PRINT_PREVIEW_OFFLINE_FOR_WEEK);
 304   source->AddLocalizedString("offline", IDS_PRINT_PREVIEW_OFFLINE);
 305   source->AddLocalizedString("fedexTos", IDS_PRINT_PREVIEW_FEDEX_TOS);
 306   source->AddLocalizedString("tosCheckboxLabel",
 307                              IDS_PRINT_PREVIEW_TOS_CHECKBOX_LABEL);
 308   source->AddLocalizedString("noDestsPromoTitle",
 309                              IDS_PRINT_PREVIEW_NO_DESTS_PROMO_TITLE);
 310   source->AddLocalizedString("noDestsPromoBody",
 311                              IDS_PRINT_PREVIEW_NO_DESTS_PROMO_BODY);
 312   source->AddLocalizedString("noDestsPromoGcpDesc",
 313                              IDS_PRINT_PREVIEW_NO_DESTS_GCP_DESC);
 314   source->AddLocalizedString("learnMore",
 315                              IDS_LEARN_MORE);
 316   source->AddLocalizedString(
 317       "noDestsPromoAddPrinterButtonLabel",
 318       IDS_PRINT_PREVIEW_NO_DESTS_PROMO_ADD_PRINTER_BUTTON_LABEL);
 319   source->AddLocalizedString(
 320       "noDestsPromoNotNowButtonLabel",
 321       IDS_PRINT_PREVIEW_NO_DESTS_PROMO_NOT_NOW_BUTTON_LABEL);
 322   source->AddLocalizedString("couldNotPrint",
 323                              IDS_PRINT_PREVIEW_COULD_NOT_PRINT);
 324   source->AddLocalizedString("registerPromoButtonText",
 325                              IDS_PRINT_PREVIEW_REGISTER_PROMO_BUTTON_TEXT);
 326   source->AddLocalizedString(
 327       "advancedSettingsSearchBoxPlaceholder",
 328       IDS_PRINT_PREVIEW_ADVANCED_SETTINGS_SEARCH_BOX_PLACEHOLDER);
 329   source->AddLocalizedString("advancedSettingsDialogTitle",
 330                              IDS_PRINT_PREVIEW_ADVANCED_SETTINGS_DIALOG_TITLE);
 331   source->AddLocalizedString(
 332       "noAdvancedSettingsMatchSearchHint",
 333       IDS_PRINT_PREVIEW_NO_ADVANCED_SETTINGS_MATCH_SEARCH_HINT);
 334   source->AddLocalizedString(
 335       "advancedSettingsDialogConfirm",
 336       IDS_PRINT_PREVIEW_ADVANCED_SETTINGS_DIALOG_CONFIRM);
 337   source->AddLocalizedString("cancel", IDS_CANCEL);
 338   source->AddLocalizedString("advancedOptionsLabel",
 339                              IDS_PRINT_PREVIEW_ADVANCED_OPTIONS_LABEL);
 340   source->AddLocalizedString("showAdvancedOptions",
 341                              IDS_PRINT_PREVIEW_SHOW_ADVANCED_OPTIONS);
 342
 343   source->AddLocalizedString("accept", IDS_PRINT_PREVIEW_ACCEPT_INVITE);
 344   source->AddLocalizedString(
 345       "acceptForGroup", IDS_PRINT_PREVIEW_ACCEPT_GROUP_INVITE);
 346   source->AddLocalizedString("reject", IDS_PRINT_PREVIEW_REJECT_INVITE);
 347   source->AddLocalizedString(
 348       "groupPrinterSharingInviteText", IDS_PRINT_PREVIEW_GROUP_INVITE_TEXT);
 349   source->AddLocalizedString(
 350       "printerSharingInviteText", IDS_PRINT_PREVIEW_INVITE_TEXT);
 351
 352   source->SetJsonPath("strings.js");
 353   source->AddResourcePath("print_preview.js", IDR_PRINT_PREVIEW_JS);
 354   source->AddResourcePath("images/printer.png",
 355                           IDR_PRINT_PREVIEW_IMAGES_PRINTER);
 356   source->AddResourcePath("images/printer_shared.png",
 357                           IDR_PRINT_PREVIEW_IMAGES_PRINTER_SHARED);
 358   source->AddResourcePath("images/third_party.png",
 359                           IDR_PRINT_PREVIEW_IMAGES_THIRD_PARTY);
 360   source->AddResourcePath("images/third_party_fedex.png",
 361                           IDR_PRINT_PREVIEW_IMAGES_THIRD_PARTY_FEDEX);
 362   source->AddResourcePath("images/google_doc.png",
 363                           IDR_PRINT_PREVIEW_IMAGES_GOOGLE_DOC);
 364   source->AddResourcePath("images/pdf.png", IDR_PRINT_PREVIEW_IMAGES_PDF);
 365   source->AddResourcePath("images/mobile.png", IDR_PRINT_PREVIEW_IMAGES_MOBILE);
 366   source->AddResourcePath("images/mobile_shared.png",
 367                           IDR_PRINT_PREVIEW_IMAGES_MOBILE_SHARED);
 368   source->SetDefaultResource(IDR_PRINT_PREVIEW_HTML);
 369   source->SetRequestFilter(base::Bind(&HandleRequestCallback));
 370   source->OverrideContentSecurityPolicyObjectSrc("object-src 'self';");
 371   source->AddLocalizedString("moreOptionsLabel", IDS_MORE_OPTIONS_LABEL);
 372   source->AddLocalizedString("lessOptionsLabel", IDS_LESS_OPTIONS_LABEL);
 373   return source;
 374 }
 375
 376 PrintPreviewUI::TestingDelegate* g_testing_delegate = NULL;
 377
 378 }  // namespace
 379
 380 PrintPreviewUI::PrintPreviewUI(content::WebUI* web_ui)
 381     : ConstrainedWebDialogUI(web_ui),
 382       initial_preview_start_time_(base::TimeTicks::Now()),
 383       id_(g_print_preview_ui_id_map.Get().Add(this)),
 384       handler_(NULL),
 385       source_is_modifiable_(true),
 386       source_has_selection_(false),
 387       dialog_closed_(false) {
 388   // Set up the chrome://print/ data source.
 389   Profile* profile = Profile::FromWebUI(web_ui);
 390   content::WebUIDataSource::Add(profile, CreatePrintPreviewUISource());
 391
 392   // Set up the chrome://theme/ source.
 393   content::URLDataSource::Add(profile, new ThemeSource(profile));
 394
 395   // WebUI owns |handler_|.
 396   handler_ = new PrintPreviewHandler();
 397   web_ui->AddMessageHandler(handler_);
 398
 399   web_ui->AddMessageHandler(new MetricsHandler());
 400
 401   g_print_preview_request_id_map.Get().Set(id_, -1);
 402 }
 403
 404 PrintPreviewUI::~PrintPreviewUI() {
 405   print_preview_data_service()->RemoveEntry(id_);
 406   g_print_preview_request_id_map.Get().Erase(id_);
 407   g_print_preview_ui_id_map.Get().Remove(id_);
 408 }
 409
 410 void PrintPreviewUI::GetPrintPreviewDataForIndex(
 411     int index,
 412     scoped_refptr<base::RefCountedBytes>* data) {
 413   print_preview_data_service()->GetDataEntry(id_, index, data);
 414 }
 415
 416 void PrintPreviewUI::SetPrintPreviewDataForIndex(
 417     int index,
 418     const base::RefCountedBytes* data) {
 419   print_preview_data_service()->SetDataEntry(id_, index, data);
 420 }
 421
 422 void PrintPreviewUI::ClearAllPreviewData() {
 423   print_preview_data_service()->RemoveEntry(id_);
 424 }
 425
 426 int PrintPreviewUI::GetAvailableDraftPageCount() {
 427   return print_preview_data_service()->GetAvailableDraftPageCount(id_);
 428 }
 429
 430 void PrintPreviewUI::SetInitiatorTitle(
 431     const base::string16& job_title) {
 432   initiator_title_ = job_title;
 433 }
 434
 435 // static
 436 void PrintPreviewUI::SetInitialParams(
 437     content::WebContents* print_preview_dialog,
 438     const PrintHostMsg_RequestPrintPreview_Params& params) {
 439   if (!print_preview_dialog || !print_preview_dialog->GetWebUI())
 440     return;
 441   PrintPreviewUI* print_preview_ui = static_cast<PrintPreviewUI*>(
 442       print_preview_dialog->GetWebUI()->GetController());
 443   print_preview_ui->source_is_modifiable_ = params.is_modifiable;
 444   print_preview_ui->source_has_selection_ = params.has_selection;
 445   print_preview_ui->print_selection_only_ = params.selection_only;
 446 }
 447
 448 // static
 449 void PrintPreviewUI::GetCurrentPrintPreviewStatus(int32 preview_ui_id,
 450                                                   int request_id,
 451                                                   bool* cancel) {
 452   int current_id = -1;
 453   if (!g_print_preview_request_id_map.Get().Get(preview_ui_id, &current_id)) {
 454     *cancel = true;
 455     return;
 456   }
 457   *cancel = (request_id != current_id);
 458 }
 459
 460 int32 PrintPreviewUI::GetIDForPrintPreviewUI() const {
 461   return id_;
 462 }
 463
 464 void PrintPreviewUI::OnPrintPreviewDialogClosed() {
 465   WebContents* preview_dialog = web_ui()->GetWebContents();
 466   printing::BackgroundPrintingManager* background_printing_manager =
 467       g_browser_process->background_printing_manager();
 468   if (background_printing_manager->HasPrintPreviewDialog(preview_dialog))
 469     return;
 470   OnClosePrintPreviewDialog();
 471 }
 472
 473 void PrintPreviewUI::OnInitiatorClosed() {
 474   WebContents* preview_dialog = web_ui()->GetWebContents();
 475   printing::BackgroundPrintingManager* background_printing_manager =
 476       g_browser_process->background_printing_manager();
 477   if (background_printing_manager->HasPrintPreviewDialog(preview_dialog))
 478     web_ui()->CallJavascriptFunction("cancelPendingPrintRequest");
 479   else
 480     OnClosePrintPreviewDialog();
 481 }
 482
 483 void PrintPreviewUI::OnPrintPreviewRequest(int request_id) {
 484   if (!initial_preview_start_time_.is_null()) {
 485     UMA_HISTOGRAM_TIMES("PrintPreview.InitializationTime",
 486                         base::TimeTicks::Now() - initial_preview_start_time_);
 487   }
 488   g_print_preview_request_id_map.Get().Set(id_, request_id);
 489 }
 490
 491 #if defined(ENABLE_BASIC_PRINTING)
 492 void PrintPreviewUI::OnShowSystemDialog() {
 493   web_ui()->CallJavascriptFunction("onSystemDialogLinkClicked");
 494 }
 495 #endif  // ENABLE_BASIC_PRINTING
 496
 497 void PrintPreviewUI::OnDidGetPreviewPageCount(
 498     const PrintHostMsg_DidGetPreviewPageCount_Params& params) {
 499   DCHECK_GT(params.page_count, 0);
 500   if (g_testing_delegate)
 501     g_testing_delegate->DidGetPreviewPageCount(params.page_count);
 502   base::FundamentalValue count(params.page_count);
 503   base::FundamentalValue request_id(params.preview_request_id);
 504   web_ui()->CallJavascriptFunction("onDidGetPreviewPageCount",
 505                                    count,
 506                                    request_id);
 507 }
 508
 509 void PrintPreviewUI::OnDidGetDefaultPageLayout(
 510     const PageSizeMargins& page_layout, const gfx::Rect& printable_area,
 511     bool has_custom_page_size_style) {
 512   if (page_layout.margin_top < 0 || page_layout.margin_left < 0 ||
 513       page_layout.margin_bottom < 0 || page_layout.margin_right < 0 ||
 514       page_layout.content_width < 0 || page_layout.content_height < 0 ||
 515       printable_area.width() <= 0 || printable_area.height() <= 0) {
 516     NOTREACHED();
 517     return;
 518   }
 519
 520   base::DictionaryValue layout;
 521   layout.SetDouble(printing::kSettingMarginTop, page_layout.margin_top);
 522   layout.SetDouble(printing::kSettingMarginLeft, page_layout.margin_left);
 523   layout.SetDouble(printing::kSettingMarginBottom, page_layout.margin_bottom);
 524   layout.SetDouble(printing::kSettingMarginRight, page_layout.margin_right);
 525   layout.SetDouble(printing::kSettingContentWidth, page_layout.content_width);
 526   layout.SetDouble(printing::kSettingContentHeight, page_layout.content_height);
 527   layout.SetInteger(printing::kSettingPrintableAreaX, printable_area.x());
 528   layout.SetInteger(printing::kSettingPrintableAreaY, printable_area.y());
 529   layout.SetInteger(printing::kSettingPrintableAreaWidth,
 530                     printable_area.width());
 531   layout.SetInteger(printing::kSettingPrintableAreaHeight,
 532                     printable_area.height());
 533
 534   base::FundamentalValue has_page_size_style(has_custom_page_size_style);
 535   web_ui()->CallJavascriptFunction("onDidGetDefaultPageLayout", layout,
 536                                    has_page_size_style);
 537 }
 538
 539 void PrintPreviewUI::OnDidPreviewPage(int page_number,
 540                                       int preview_request_id) {
 541   DCHECK_GE(page_number, 0);
 542   base::FundamentalValue number(page_number);
 543   base::FundamentalValue ui_identifier(id_);
 544   base::FundamentalValue request_id(preview_request_id);
 545   if (g_testing_delegate)
 546     g_testing_delegate->DidRenderPreviewPage(web_ui()->GetWebContents());
 547   web_ui()->CallJavascriptFunction(
 548       "onDidPreviewPage", number, ui_identifier, request_id);
 549   if (g_testing_delegate && g_testing_delegate->IsAutoCancelEnabled())
 550     web_ui()->CallJavascriptFunction("autoCancelForTesting");
 551 }
 552
 553 void PrintPreviewUI::OnPreviewDataIsAvailable(int expected_pages_count,
 554                                               int preview_request_id) {
 555   VLOG(1) << "Print preview request finished with "
 556           << expected_pages_count << " pages";
 557
 558   if (!initial_preview_start_time_.is_null()) {
 559     UMA_HISTOGRAM_TIMES("PrintPreview.InitialDisplayTime",
 560                         base::TimeTicks::Now() - initial_preview_start_time_);
 561     UMA_HISTOGRAM_COUNTS("PrintPreview.PageCount.Initial",
 562                          expected_pages_count);
 563     UMA_HISTOGRAM_COUNTS(
 564         "PrintPreview.RegeneratePreviewRequest.BeforeFirstData",
 565         handler_->regenerate_preview_request_count());
 566     initial_preview_start_time_ = base::TimeTicks();
 567   }
 568   base::FundamentalValue ui_identifier(id_);
 569   base::FundamentalValue ui_preview_request_id(preview_request_id);
 570   web_ui()->CallJavascriptFunction("updatePrintPreview", ui_identifier,
 571                                    ui_preview_request_id);
 572 }
 573
 574 void PrintPreviewUI::OnPrintPreviewDialogDestroyed() {
 575   handler_->OnPrintPreviewDialogDestroyed();
 576 }
 577
 578 void PrintPreviewUI::OnFileSelectionCancelled() {
 579   web_ui()->CallJavascriptFunction("fileSelectionCancelled");
 580 }
 581
 582 void PrintPreviewUI::OnCancelPendingPreviewRequest() {
 583   g_print_preview_request_id_map.Get().Set(id_, -1);
 584 }
 585
 586 void PrintPreviewUI::OnPrintPreviewFailed() {
 587   handler_->OnPrintPreviewFailed();
 588   web_ui()->CallJavascriptFunction("printPreviewFailed");
 589 }
 590
 591 void PrintPreviewUI::OnInvalidPrinterSettings() {
 592   web_ui()->CallJavascriptFunction("invalidPrinterSettings");
 593 }
 594
 595 PrintPreviewDataService* PrintPreviewUI::print_preview_data_service() {
 596   return PrintPreviewDataService::GetInstance();
 597 }
 598
 599 void PrintPreviewUI::OnHidePreviewDialog() {
 600   WebContents* preview_dialog = web_ui()->GetWebContents();
 601   printing::BackgroundPrintingManager* background_printing_manager =
 602       g_browser_process->background_printing_manager();
 603   if (background_printing_manager->HasPrintPreviewDialog(preview_dialog))
 604     return;
 605
 606   ConstrainedWebDialogDelegate* delegate = GetConstrainedDelegate();
 607   if (!delegate)
 608     return;
 609   delegate->ReleaseWebContentsOnDialogClose();
 610   background_printing_manager->OwnPrintPreviewDialog(preview_dialog);
 611   OnClosePrintPreviewDialog();
 612 }
 613
 614 void PrintPreviewUI::OnClosePrintPreviewDialog() {
 615   if (dialog_closed_)
 616     return;
 617   dialog_closed_ = true;
 618   ConstrainedWebDialogDelegate* delegate = GetConstrainedDelegate();
 619   if (!delegate)
 620     return;
 621   delegate->GetWebDialogDelegate()->OnDialogClosed(std::string());
 622   delegate->OnDialogCloseFromWebUI();
 623 }
 624
 625 void PrintPreviewUI::OnReloadPrintersList() {
 626   web_ui()->CallJavascriptFunction("reloadPrintersList");
 627 }
 628
 629 void PrintPreviewUI::OnSetOptionsFromDocument(
 630     const PrintHostMsg_SetOptionsFromDocument_Params& params) {
 631   // Notify WebUI that print scaling is disabled
 632   if (params.is_scaling_disabled)
 633     web_ui()->CallJavascriptFunction("printScalingDisabledForSourcePDF");
 634 }
 635
 636 // static
 637 void PrintPreviewUI::SetDelegateForTesting(TestingDelegate* delegate) {
 638   g_testing_delegate = delegate;
 639 }
 640
 641 void PrintPreviewUI::SetSelectedFileForTesting(const base::FilePath& path) {
 642   handler_->FileSelected(path, 0, NULL);
 643 }
 644
 645 void PrintPreviewUI::SetPdfSavedClosureForTesting(
 646     const base::Closure& closure) {
 647   handler_->SetPdfSavedClosureForTesting(closure);
 648 }