pdf/out_of_process_instance.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 "pdf/out_of_process_instance.h"
   6
   7 #include <algorithm>  // for min/max()
   8 #define _USE_MATH_DEFINES  // for M_PI
   9 #include <cmath>      // for log() and pow()
  10 #include <math.h>
  11 #include <list>
  12
  13 #include "base/json/json_reader.h"
  14 #include "base/json/json_writer.h"
  15 #include "base/logging.h"
  16 #include "base/strings/string_number_conversions.h"
  17 #include "base/strings/string_split.h"
  18 #include "base/strings/string_util.h"
  19 #include "base/values.h"
  20 #include "chrome/common/content_restriction.h"
  21 #include "net/base/escape.h"
  22 #include "pdf/pdf.h"
  23 #include "ppapi/c/dev/ppb_cursor_control_dev.h"
  24 #include "ppapi/c/pp_errors.h"
  25 #include "ppapi/c/pp_rect.h"
  26 #include "ppapi/c/private/ppb_instance_private.h"
  27 #include "ppapi/c/private/ppp_pdf.h"
  28 #include "ppapi/c/trusted/ppb_url_loader_trusted.h"
  29 #include "ppapi/cpp/core.h"
  30 #include "ppapi/cpp/dev/memory_dev.h"
  31 #include "ppapi/cpp/dev/text_input_dev.h"
  32 #include "ppapi/cpp/dev/url_util_dev.h"
  33 #include "ppapi/cpp/module.h"
  34 #include "ppapi/cpp/point.h"
  35 #include "ppapi/cpp/private/pdf.h"
  36 #include "ppapi/cpp/private/var_private.h"
  37 #include "ppapi/cpp/rect.h"
  38 #include "ppapi/cpp/resource.h"
  39 #include "ppapi/cpp/url_request_info.h"
  40 #include "ppapi/cpp/var_array.h"
  41 #include "ppapi/cpp/var_dictionary.h"
  42 #include "ui/events/keycodes/keyboard_codes.h"
  43
  44 #if defined(OS_MACOSX)
  45 #include "base/mac/mac_util.h"
  46 #endif
  47
  48 namespace chrome_pdf {
  49
  50 const char kChromePrint[] = "chrome://print/";
  51 const char kChromeExtension[] =
  52     "chrome-extension://mhjfbmdgcfjbbpaeojofohoefgiehjai";
  53
  54 // Dictionary Value key names for the document accessibility info
  55 const char kAccessibleNumberOfPages[] = "numberOfPages";
  56 const char kAccessibleLoaded[] = "loaded";
  57 const char kAccessibleCopyable[] = "copyable";
  58
  59 // Constants used in handling postMessage() messages.
  60 const char kType[] = "type";
  61 // Viewport message arguments. (Page -> Plugin).
  62 const char kJSViewportType[] = "viewport";
  63 const char kJSXOffset[] = "xOffset";
  64 const char kJSYOffset[] = "yOffset";
  65 const char kJSZoom[] = "zoom";
  66 // Stop scrolling message (Page -> Plugin)
  67 const char kJSStopScrollingType[] = "stopScrolling";
  68 // Document dimension arguments (Plugin -> Page).
  69 const char kJSDocumentDimensionsType[] = "documentDimensions";
  70 const char kJSDocumentWidth[] = "width";
  71 const char kJSDocumentHeight[] = "height";
  72 const char kJSPageDimensions[] = "pageDimensions";
  73 const char kJSPageX[] = "x";
  74 const char kJSPageY[] = "y";
  75 const char kJSPageWidth[] = "width";
  76 const char kJSPageHeight[] = "height";
  77 // Document load progress arguments (Plugin -> Page)
  78 const char kJSLoadProgressType[] = "loadProgress";
  79 const char kJSProgressPercentage[] = "progress";
  80 // Get password arguments (Plugin -> Page)
  81 const char kJSGetPasswordType[] = "getPassword";
  82 // Get password complete arguments (Page -> Plugin)
  83 const char kJSGetPasswordCompleteType[] = "getPasswordComplete";
  84 const char kJSPassword[] = "password";
  85 // Print (Page -> Plugin)
  86 const char kJSPrintType[] = "print";
  87 // Go to page (Plugin -> Page)
  88 const char kJSGoToPageType[] = "goToPage";
  89 const char kJSPageNumber[] = "page";
  90 // Reset print preview mode (Page -> Plugin)
  91 const char kJSResetPrintPreviewModeType[] = "resetPrintPreviewMode";
  92 const char kJSPrintPreviewUrl[] = "url";
  93 const char kJSPrintPreviewGrayscale[] = "grayscale";
  94 const char kJSPrintPreviewPageCount[] = "pageCount";
  95 // Load preview page (Page -> Plugin)
  96 const char kJSLoadPreviewPageType[] = "loadPreviewPage";
  97 const char kJSPreviewPageUrl[] = "url";
  98 const char kJSPreviewPageIndex[] = "index";
  99 // Set scroll position (Plugin -> Page)
 100 const char kJSSetScrollPositionType[] = "setScrollPosition";
 101 const char kJSPositionX[] = "x";
 102 const char kJSPositionY[] = "y";
 103 // Set translated strings (Plugin -> Page)
 104 const char kJSSetTranslatedStringsType[] = "setTranslatedStrings";
 105 const char kJSGetPasswordString[] = "getPasswordString";
 106 const char kJSLoadingString[] = "loadingString";
 107 const char kJSLoadFailedString[] = "loadFailedString";
 108 // Request accessibility JSON data (Page -> Plugin)
 109 const char kJSGetAccessibilityJSONType[] = "getAccessibilityJSON";
 110 const char kJSAccessibilityPageNumber[] = "page";
 111 // Reply with accessibility JSON data (Plugin -> Page)
 112 const char kJSGetAccessibilityJSONReplyType[] = "getAccessibilityJSONReply";
 113 const char kJSAccessibilityJSON[] = "json";
 114 // Cancel the stream URL request (Plugin -> Page)
 115 const char kJSCancelStreamUrlType[] = "cancelStreamUrl";
 116 // Navigate to the given URL (Plugin -> Page)
 117 const char kJSNavigateType[] = "navigate";
 118 const char kJSNavigateUrl[] = "url";
 119 const char kJSNavigateNewTab[] = "newTab";
 120 // Open the email editor with the given parameters (Plugin -> Page)
 121 const char kJSEmailType[] = "email";
 122 const char kJSEmailTo[] = "to";
 123 const char kJSEmailCc[] = "cc";
 124 const char kJSEmailBcc[] = "bcc";
 125 const char kJSEmailSubject[] = "subject";
 126 const char kJSEmailBody[] = "body";
 127
 128 const int kFindResultCooldownMs = 100;
 129
 130 const double kMinZoom = 0.01;
 131
 132 namespace {
 133
 134 static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
 135
 136 PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
 137   pp::Var var;
 138   void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
 139   if (object) {
 140     var = static_cast<OutOfProcessInstance*>(object)->GetLinkAtPosition(
 141         pp::Point(point));
 142   }
 143   return var.Detach();
 144 }
 145
 146 void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
 147   void* object =
 148       pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
 149   if (object) {
 150     OutOfProcessInstance* obj_instance =
 151         static_cast<OutOfProcessInstance*>(object);
 152     switch (type) {
 153       case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
 154         obj_instance->RotateClockwise();
 155         break;
 156       case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
 157         obj_instance->RotateCounterclockwise();
 158         break;
 159     }
 160   }
 161 }
 162
 163 const PPP_Pdf ppp_private = {
 164   &GetLinkAtPosition,
 165   &Transform
 166 };
 167
 168 int ExtractPrintPreviewPageIndex(const std::string& src_url) {
 169   // Sample |src_url| format: chrome://print/id/page_index/print.pdf
 170   std::vector<std::string> url_substr;
 171   base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr);
 172   if (url_substr.size() != 3)
 173     return -1;
 174
 175   if (url_substr[2] != "print.pdf")
 176     return -1;
 177
 178   int page_index = 0;
 179   if (!base::StringToInt(url_substr[1], &page_index))
 180     return -1;
 181   return page_index;
 182 }
 183
 184 bool IsPrintPreviewUrl(const std::string& url) {
 185   return url.substr(0, strlen(kChromePrint)) == kChromePrint;
 186 }
 187
 188 void ScalePoint(float scale, pp::Point* point) {
 189   point->set_x(static_cast<int>(point->x() * scale));
 190   point->set_y(static_cast<int>(point->y() * scale));
 191 }
 192
 193 void ScaleRect(float scale, pp::Rect* rect) {
 194   int left = static_cast<int>(floorf(rect->x() * scale));
 195   int top = static_cast<int>(floorf(rect->y() * scale));
 196   int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale));
 197   int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale));
 198   rect->SetRect(left, top, right - left, bottom - top);
 199 }
 200
 201 // TODO(raymes): Remove this dependency on VarPrivate/InstancePrivate. It's
 202 // needed right now to do a synchronous call to JavaScript, but we could easily
 203 // replace this with a custom PPB_PDF function.
 204 pp::Var ModalDialog(const pp::Instance* instance,
 205                     const std::string& type,
 206                     const std::string& message,
 207                     const std::string& default_answer) {
 208   const PPB_Instance_Private* interface =
 209       reinterpret_cast<const PPB_Instance_Private*>(
 210           pp::Module::Get()->GetBrowserInterface(
 211               PPB_INSTANCE_PRIVATE_INTERFACE));
 212   pp::VarPrivate window(pp::PASS_REF,
 213       interface->GetWindowObject(instance->pp_instance()));
 214   if (default_answer.empty())
 215     return window.Call(type, message);
 216   else
 217     return window.Call(type, message, default_answer);
 218 }
 219
 220 }  // namespace
 221
 222 OutOfProcessInstance::OutOfProcessInstance(PP_Instance instance)
 223     : pp::Instance(instance),
 224       pp::Find_Private(this),
 225       pp::Printing_Dev(this),
 226       pp::Selection_Dev(this),
 227       cursor_(PP_CURSORTYPE_POINTER),
 228       zoom_(1.0),
 229       device_scale_(1.0),
 230       printing_enabled_(true),
 231       full_(false),
 232       paint_manager_(this, this, true),
 233       first_paint_(true),
 234       document_load_state_(LOAD_STATE_LOADING),
 235       preview_document_load_state_(LOAD_STATE_COMPLETE),
 236       uma_(this),
 237       told_browser_about_unsupported_feature_(false),
 238       print_preview_page_count_(0),
 239       last_progress_sent_(0),
 240       recently_sent_find_update_(false),
 241       received_viewport_message_(false),
 242       did_call_start_loading_(false),
 243       stop_scrolling_(false) {
 244   loader_factory_.Initialize(this);
 245   timer_factory_.Initialize(this);
 246   form_factory_.Initialize(this);
 247   print_callback_factory_.Initialize(this);
 248   engine_.reset(PDFEngine::Create(this));
 249   pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private);
 250   AddPerInstanceObject(kPPPPdfInterface, this);
 251
 252   RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
 253   RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
 254   RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH);
 255 }
 256
 257 OutOfProcessInstance::~OutOfProcessInstance() {
 258   RemovePerInstanceObject(kPPPPdfInterface, this);
 259 }
 260
 261 bool OutOfProcessInstance::Init(uint32_t argc,
 262                                 const char* argn[],
 263                                 const char* argv[]) {
 264   // Check if the PDF is being loaded in the PDF chrome extension. We only allow
 265   // the plugin to be put into "full frame" mode when it is being loaded in the
 266   // extension because this enables some features that we don't want pages
 267   // abusing outside of the extension.
 268   pp::Var document_url_var = pp::URLUtil_Dev::Get()->GetDocumentURL(this);
 269   std::string document_url = document_url_var.is_string() ?
 270       document_url_var.AsString() : std::string();
 271   std::string extension_url = std::string(kChromeExtension);
 272   bool in_extension =
 273       !document_url.compare(0, extension_url.size(), extension_url);
 274
 275   if (in_extension) {
 276     // Check if the plugin is full frame. This is passed in from JS.
 277     for (uint32_t i = 0; i < argc; ++i) {
 278       if (strcmp(argn[i], "full-frame") == 0) {
 279         full_ = true;
 280         break;
 281       }
 282     }
 283   }
 284
 285   // Only allow the plugin to handle find requests if it is full frame.
 286   if (full_)
 287     SetPluginToHandleFindRequests();
 288
 289   // Send translated strings to the extension where they will be displayed.
 290   // TODO(raymes): It would be better to get these in the extension directly
 291   // through an API but no such API currently exists.
 292   pp::VarDictionary translated_strings;
 293   translated_strings.Set(kType, kJSSetTranslatedStringsType);
 294   translated_strings.Set(kJSGetPasswordString,
 295       GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
 296   translated_strings.Set(kJSLoadingString,
 297       GetLocalizedString(PP_RESOURCESTRING_PDFLOADING));
 298   translated_strings.Set(kJSLoadFailedString,
 299       GetLocalizedString(PP_RESOURCESTRING_PDFLOAD_FAILED));
 300   PostMessage(translated_strings);
 301
 302   text_input_.reset(new pp::TextInput_Dev(this));
 303
 304   const char* stream_url = NULL;
 305   const char* original_url = NULL;
 306   const char* headers = NULL;
 307   for (uint32_t i = 0; i < argc; ++i) {
 308     if (strcmp(argn[i], "src") == 0)
 309       original_url = argv[i];
 310     else if (strcmp(argn[i], "stream-url") == 0)
 311       stream_url = argv[i];
 312     else if (strcmp(argn[i], "headers") == 0)
 313       headers = argv[i];
 314   }
 315
 316   // TODO(raymes): This is a hack to ensure that if no headers are passed in
 317   // then we get the right MIME type. When the in process plugin is removed we
 318   // can fix the document loader properly and remove this hack.
 319   if (!headers || strcmp(headers, "") == 0)
 320     headers = "content-type: application/pdf";
 321
 322   if (!original_url)
 323     return false;
 324
 325   if (!stream_url)
 326     stream_url = original_url;
 327
 328   // If we're in print preview mode we don't need to load the document yet.
 329   // A |kJSResetPrintPreviewModeType| message will be sent to the plugin letting
 330   // it know the url to load. By not loading here we avoid loading the same
 331   // document twice.
 332   if (IsPrintPreviewUrl(original_url))
 333     return true;
 334
 335   LoadUrl(stream_url);
 336   url_ = original_url;
 337   return engine_->New(original_url, headers);
 338 }
 339
 340 void OutOfProcessInstance::HandleMessage(const pp::Var& message) {
 341   pp::VarDictionary dict(message);
 342   if (!dict.Get(kType).is_string()) {
 343     NOTREACHED();
 344     return;
 345   }
 346
 347   std::string type = dict.Get(kType).AsString();
 348
 349   if (type == kJSViewportType &&
 350       dict.Get(pp::Var(kJSXOffset)).is_int() &&
 351       dict.Get(pp::Var(kJSYOffset)).is_int() &&
 352       dict.Get(pp::Var(kJSZoom)).is_number()) {
 353     received_viewport_message_ = true;
 354     stop_scrolling_ = false;
 355     double zoom = dict.Get(pp::Var(kJSZoom)).AsDouble();
 356     pp::Point scroll_offset(dict.Get(pp::Var(kJSXOffset)).AsInt(),
 357                             dict.Get(pp::Var(kJSYOffset)).AsInt());
 358
 359     // Bound the input parameters.
 360     zoom = std::max(kMinZoom, zoom);
 361     SetZoom(zoom);
 362     scroll_offset = BoundScrollOffsetToDocument(scroll_offset);
 363     engine_->ScrolledToXPosition(scroll_offset.x() * device_scale_);
 364     engine_->ScrolledToYPosition(scroll_offset.y() * device_scale_);
 365   } else if (type == kJSGetPasswordCompleteType &&
 366              dict.Get(pp::Var(kJSPassword)).is_string()) {
 367     if (password_callback_) {
 368       pp::CompletionCallbackWithOutput<pp::Var> callback = *password_callback_;
 369       password_callback_.reset();
 370       *callback.output() = dict.Get(pp::Var(kJSPassword)).pp_var();
 371       callback.Run(PP_OK);
 372     } else {
 373       NOTREACHED();
 374     }
 375   } else if (type == kJSPrintType) {
 376     Print();
 377   } else if (type == kJSResetPrintPreviewModeType &&
 378              dict.Get(pp::Var(kJSPrintPreviewUrl)).is_string() &&
 379              dict.Get(pp::Var(kJSPrintPreviewGrayscale)).is_bool() &&
 380              dict.Get(pp::Var(kJSPrintPreviewPageCount)).is_int()) {
 381     url_ = dict.Get(pp::Var(kJSPrintPreviewUrl)).AsString();
 382     preview_pages_info_ = std::queue<PreviewPageInfo>();
 383     preview_document_load_state_ = LOAD_STATE_COMPLETE;
 384     document_load_state_ = LOAD_STATE_LOADING;
 385     LoadUrl(url_);
 386     preview_engine_.reset();
 387     engine_.reset(PDFEngine::Create(this));
 388     engine_->SetGrayscale(dict.Get(pp::Var(kJSPrintPreviewGrayscale)).AsBool());
 389     engine_->New(url_.c_str());
 390
 391     print_preview_page_count_ =
 392         std::max(dict.Get(pp::Var(kJSPrintPreviewPageCount)).AsInt(), 0);
 393
 394     paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
 395   } else if (type == kJSLoadPreviewPageType &&
 396              dict.Get(pp::Var(kJSPreviewPageUrl)).is_string() &&
 397              dict.Get(pp::Var(kJSPreviewPageIndex)).is_int()) {
 398     ProcessPreviewPageInfo(dict.Get(pp::Var(kJSPreviewPageUrl)).AsString(),
 399                            dict.Get(pp::Var(kJSPreviewPageIndex)).AsInt());
 400   } else if (type == kJSGetAccessibilityJSONType) {
 401     pp::VarDictionary reply;
 402     reply.Set(pp::Var(kType), pp::Var(kJSGetAccessibilityJSONReplyType));
 403     if (dict.Get(pp::Var(kJSAccessibilityPageNumber)).is_int()) {
 404       int page = dict.Get(pp::Var(kJSAccessibilityPageNumber)).AsInt();
 405       reply.Set(pp::Var(kJSAccessibilityJSON),
 406                         pp::Var(engine_->GetPageAsJSON(page)));
 407     } else {
 408       base::DictionaryValue node;
 409       node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
 410       node.SetBoolean(kAccessibleLoaded,
 411                       document_load_state_ != LOAD_STATE_LOADING);
 412       bool has_permissions =
 413           engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
 414           engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
 415       node.SetBoolean(kAccessibleCopyable, has_permissions);
 416       std::string json;
 417       base::JSONWriter::Write(&node, &json);
 418       reply.Set(pp::Var(kJSAccessibilityJSON), pp::Var(json));
 419     }
 420     PostMessage(reply);
 421   } else if (type == kJSStopScrollingType) {
 422     stop_scrolling_ = true;
 423   } else {
 424     NOTREACHED();
 425   }
 426 }
 427
 428 bool OutOfProcessInstance::HandleInputEvent(
 429     const pp::InputEvent& event) {
 430   // To simplify things, convert the event into device coordinates if it is
 431   // a mouse event.
 432   pp::InputEvent event_device_res(event);
 433   {
 434     pp::MouseInputEvent mouse_event(event);
 435     if (!mouse_event.is_null()) {
 436       pp::Point point = mouse_event.GetPosition();
 437       pp::Point movement = mouse_event.GetMovement();
 438       ScalePoint(device_scale_, &point);
 439       ScalePoint(device_scale_, &movement);
 440       mouse_event = pp::MouseInputEvent(
 441           this,
 442           event.GetType(),
 443           event.GetTimeStamp(),
 444           event.GetModifiers(),
 445           mouse_event.GetButton(),
 446           point,
 447           mouse_event.GetClickCount(),
 448           movement);
 449       event_device_res = mouse_event;
 450     }
 451   }
 452
 453   pp::InputEvent offset_event(event_device_res);
 454   switch (offset_event.GetType()) {
 455     case PP_INPUTEVENT_TYPE_MOUSEDOWN:
 456     case PP_INPUTEVENT_TYPE_MOUSEUP:
 457     case PP_INPUTEVENT_TYPE_MOUSEMOVE:
 458     case PP_INPUTEVENT_TYPE_MOUSEENTER:
 459     case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
 460       pp::MouseInputEvent mouse_event(event_device_res);
 461       pp::MouseInputEvent mouse_event_dip(event);
 462       pp::Point point = mouse_event.GetPosition();
 463       point.set_x(point.x() - available_area_.x());
 464       offset_event = pp::MouseInputEvent(
 465           this,
 466           event.GetType(),
 467           event.GetTimeStamp(),
 468           event.GetModifiers(),
 469           mouse_event.GetButton(),
 470           point,
 471           mouse_event.GetClickCount(),
 472           mouse_event.GetMovement());
 473       break;
 474     }
 475     default:
 476       break;
 477   }
 478   if (engine_->HandleEvent(offset_event))
 479     return true;
 480
 481   // TODO(raymes): Implement this scroll behavior in JS:
 482   // When click+dragging, scroll the document correctly.
 483
 484   if (event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN &&
 485       event.GetModifiers() & kDefaultKeyModifier) {
 486     pp::KeyboardInputEvent keyboard_event(event);
 487     switch (keyboard_event.GetKeyCode()) {
 488       case 'A':
 489         engine_->SelectAll();
 490         return true;
 491     }
 492   }
 493
 494   // Return true for unhandled clicks so the plugin takes focus.
 495   return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
 496 }
 497
 498 void OutOfProcessInstance::DidChangeView(const pp::View& view) {
 499   pp::Rect view_rect(view.GetRect());
 500   float old_device_scale = device_scale_;
 501   float device_scale = view.GetDeviceScale();
 502   pp::Size view_device_size(view_rect.width() * device_scale,
 503                             view_rect.height() * device_scale);
 504
 505   if (view_device_size != plugin_size_ || device_scale != device_scale_) {
 506     device_scale_ = device_scale;
 507     plugin_dip_size_ = view_rect.size();
 508     plugin_size_ = view_device_size;
 509
 510     paint_manager_.SetSize(view_device_size, device_scale_);
 511
 512     pp::Size new_image_data_size = PaintManager::GetNewContextSize(
 513         image_data_.size(),
 514         plugin_size_);
 515     if (new_image_data_size != image_data_.size()) {
 516       image_data_ = pp::ImageData(this,
 517                                   PP_IMAGEDATAFORMAT_BGRA_PREMUL,
 518                                   new_image_data_size,
 519                                   false);
 520       first_paint_ = true;
 521     }
 522
 523     if (image_data_.is_null()) {
 524       DCHECK(plugin_size_.IsEmpty());
 525       return;
 526     }
 527
 528     OnGeometryChanged(zoom_, old_device_scale);
 529   }
 530
 531   if (!stop_scrolling_) {
 532     pp::Point scroll_offset(
 533         BoundScrollOffsetToDocument(view.GetScrollOffset()));
 534     engine_->ScrolledToXPosition(scroll_offset.x() * device_scale_);
 535     engine_->ScrolledToYPosition(scroll_offset.y() * device_scale_);
 536   }
 537 }
 538
 539 pp::Var OutOfProcessInstance::GetLinkAtPosition(
 540     const pp::Point& point) {
 541   pp::Point offset_point(point);
 542   ScalePoint(device_scale_, &offset_point);
 543   offset_point.set_x(offset_point.x() - available_area_.x());
 544   return engine_->GetLinkAtPosition(offset_point);
 545 }
 546
 547 pp::Var OutOfProcessInstance::GetSelectedText(bool html) {
 548   if (html || !engine_->HasPermission(PDFEngine::PERMISSION_COPY))
 549     return pp::Var();
 550   return engine_->GetSelectedText();
 551 }
 552
 553 uint32_t OutOfProcessInstance::QuerySupportedPrintOutputFormats() {
 554   return engine_->QuerySupportedPrintOutputFormats();
 555 }
 556
 557 int32_t OutOfProcessInstance::PrintBegin(
 558     const PP_PrintSettings_Dev& print_settings) {
 559   // For us num_pages is always equal to the number of pages in the PDF
 560   // document irrespective of the printable area.
 561   int32_t ret = engine_->GetNumberOfPages();
 562   if (!ret)
 563     return 0;
 564
 565   uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
 566   if ((print_settings.format & supported_formats) == 0)
 567     return 0;
 568
 569   print_settings_.is_printing = true;
 570   print_settings_.pepper_print_settings = print_settings;
 571   engine_->PrintBegin();
 572   return ret;
 573 }
 574
 575 pp::Resource OutOfProcessInstance::PrintPages(
 576     const PP_PrintPageNumberRange_Dev* page_ranges,
 577     uint32_t page_range_count) {
 578   if (!print_settings_.is_printing)
 579     return pp::Resource();
 580
 581   print_settings_.print_pages_called_ = true;
 582   return engine_->PrintPages(page_ranges, page_range_count,
 583                              print_settings_.pepper_print_settings);
 584 }
 585
 586 void OutOfProcessInstance::PrintEnd() {
 587   if (print_settings_.print_pages_called_)
 588     UserMetricsRecordAction("PDF.PrintPage");
 589   print_settings_.Clear();
 590   engine_->PrintEnd();
 591 }
 592
 593 bool OutOfProcessInstance::IsPrintScalingDisabled() {
 594   return !engine_->GetPrintScaling();
 595 }
 596
 597 bool OutOfProcessInstance::StartFind(const std::string& text,
 598                                                  bool case_sensitive) {
 599   engine_->StartFind(text.c_str(), case_sensitive);
 600   return true;
 601 }
 602
 603 void OutOfProcessInstance::SelectFindResult(bool forward) {
 604   engine_->SelectFindResult(forward);
 605 }
 606
 607 void OutOfProcessInstance::StopFind() {
 608   engine_->StopFind();
 609   tickmarks_.clear();
 610   SetTickmarks(tickmarks_);
 611 }
 612
 613 void OutOfProcessInstance::OnPaint(
 614     const std::vector<pp::Rect>& paint_rects,
 615     std::vector<PaintManager::ReadyRect>* ready,
 616     std::vector<pp::Rect>* pending) {
 617   if (image_data_.is_null()) {
 618     DCHECK(plugin_size_.IsEmpty());
 619     return;
 620   }
 621   if (first_paint_) {
 622     first_paint_ = false;
 623     pp::Rect rect = pp::Rect(pp::Point(), image_data_.size());
 624     FillRect(rect, kBackgroundColor);
 625     ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
 626   }
 627
 628   if (!received_viewport_message_)
 629     return;
 630
 631   engine_->PrePaint();
 632
 633   for (size_t i = 0; i < paint_rects.size(); i++) {
 634     // Intersect with plugin area since there could be pending invalidates from
 635     // when the plugin area was larger.
 636     pp::Rect rect =
 637         paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
 638     if (rect.IsEmpty())
 639       continue;
 640
 641     pp::Rect pdf_rect = available_area_.Intersect(rect);
 642     if (!pdf_rect.IsEmpty()) {
 643       pdf_rect.Offset(available_area_.x() * -1, 0);
 644
 645       std::vector<pp::Rect> pdf_ready;
 646       std::vector<pp::Rect> pdf_pending;
 647       engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
 648       for (size_t j = 0; j < pdf_ready.size(); ++j) {
 649         pdf_ready[j].Offset(available_area_.point());
 650         ready->push_back(
 651             PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
 652       }
 653       for (size_t j = 0; j < pdf_pending.size(); ++j) {
 654         pdf_pending[j].Offset(available_area_.point());
 655         pending->push_back(pdf_pending[j]);
 656       }
 657     }
 658
 659     for (size_t j = 0; j < background_parts_.size(); ++j) {
 660       pp::Rect intersection = background_parts_[j].location.Intersect(rect);
 661       if (!intersection.IsEmpty()) {
 662         FillRect(intersection, background_parts_[j].color);
 663         ready->push_back(
 664             PaintManager::ReadyRect(intersection, image_data_, false));
 665       }
 666     }
 667   }
 668
 669   engine_->PostPaint();
 670 }
 671
 672 void OutOfProcessInstance::DidOpen(int32_t result) {
 673   if (result == PP_OK) {
 674     if (!engine_->HandleDocumentLoad(embed_loader_)) {
 675       document_load_state_ = LOAD_STATE_LOADING;
 676       DocumentLoadFailed();
 677     }
 678   } else if (result != PP_ERROR_ABORTED) {  // Can happen in tests.
 679     NOTREACHED();
 680     DocumentLoadFailed();
 681   }
 682
 683   // If it's a progressive load, cancel the stream URL request so that requests
 684   // can be made on the original URL.
 685   // TODO(raymes): Make this clearer once the in-process plugin is deleted.
 686   if (engine_->IsProgressiveLoad()) {
 687     pp::VarDictionary message;
 688     message.Set(kType, kJSCancelStreamUrlType);
 689     PostMessage(message);
 690   }
 691 }
 692
 693 void OutOfProcessInstance::DidOpenPreview(int32_t result) {
 694   if (result == PP_OK) {
 695     preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
 696     preview_engine_->HandleDocumentLoad(embed_preview_loader_);
 697   } else {
 698     NOTREACHED();
 699   }
 700 }
 701
 702 void OutOfProcessInstance::OnClientTimerFired(int32_t id) {
 703   engine_->OnCallback(id);
 704 }
 705
 706 void OutOfProcessInstance::CalculateBackgroundParts() {
 707   background_parts_.clear();
 708   int left_width = available_area_.x();
 709   int right_start = available_area_.right();
 710   int right_width = abs(plugin_size_.width() - available_area_.right());
 711   int bottom = std::min(available_area_.bottom(), plugin_size_.height());
 712
 713   // Add the left, right, and bottom rectangles.  Note: we assume only
 714   // horizontal centering.
 715   BackgroundPart part = {
 716     pp::Rect(0, 0, left_width, bottom),
 717     kBackgroundColor
 718   };
 719   if (!part.location.IsEmpty())
 720     background_parts_.push_back(part);
 721   part.location = pp::Rect(right_start, 0, right_width, bottom);
 722   if (!part.location.IsEmpty())
 723     background_parts_.push_back(part);
 724   part.location = pp::Rect(
 725       0, bottom, plugin_size_.width(), plugin_size_.height() - bottom);
 726   if (!part.location.IsEmpty())
 727     background_parts_.push_back(part);
 728 }
 729
 730 int OutOfProcessInstance::GetDocumentPixelWidth() const {
 731   return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
 732 }
 733
 734 int OutOfProcessInstance::GetDocumentPixelHeight() const {
 735   return static_cast<int>(
 736       ceil(document_size_.height() * zoom_ * device_scale_));
 737 }
 738
 739 void OutOfProcessInstance::FillRect(const pp::Rect& rect, uint32 color) {
 740   DCHECK(!image_data_.is_null() || rect.IsEmpty());
 741   uint32* buffer_start = static_cast<uint32*>(image_data_.data());
 742   int stride = image_data_.stride();
 743   uint32* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
 744   int height = rect.height();
 745   int width = rect.width();
 746   for (int y = 0; y < height; ++y) {
 747     for (int x = 0; x < width; ++x)
 748       *(ptr + x) = color;
 749     ptr += stride /4;
 750   }
 751 }
 752
 753 void OutOfProcessInstance::DocumentSizeUpdated(const pp::Size& size) {
 754   document_size_ = size;
 755
 756   pp::VarDictionary dimensions;
 757   dimensions.Set(kType, kJSDocumentDimensionsType);
 758   dimensions.Set(kJSDocumentWidth, pp::Var(document_size_.width()));
 759   dimensions.Set(kJSDocumentHeight, pp::Var(document_size_.height()));
 760   pp::VarArray page_dimensions_array;
 761   int num_pages = engine_->GetNumberOfPages();
 762   for (int i = 0; i < num_pages; ++i) {
 763     pp::Rect page_rect = engine_->GetPageRect(i);
 764     pp::VarDictionary page_dimensions;
 765     page_dimensions.Set(kJSPageX, pp::Var(page_rect.x()));
 766     page_dimensions.Set(kJSPageY, pp::Var(page_rect.y()));
 767     page_dimensions.Set(kJSPageWidth, pp::Var(page_rect.width()));
 768     page_dimensions.Set(kJSPageHeight, pp::Var(page_rect.height()));
 769     page_dimensions_array.Set(i, page_dimensions);
 770   }
 771   dimensions.Set(kJSPageDimensions, page_dimensions_array);
 772   PostMessage(dimensions);
 773
 774   OnGeometryChanged(zoom_, device_scale_);
 775 }
 776
 777 void OutOfProcessInstance::Invalidate(const pp::Rect& rect) {
 778   pp::Rect offset_rect(rect);
 779   offset_rect.Offset(available_area_.point());
 780   paint_manager_.InvalidateRect(offset_rect);
 781 }
 782
 783 void OutOfProcessInstance::Scroll(const pp::Point& point) {
 784   if (!image_data_.is_null())
 785     paint_manager_.ScrollRect(available_area_, point);
 786 }
 787
 788 void OutOfProcessInstance::ScrollToX(int x) {
 789   pp::VarDictionary position;
 790   position.Set(kType, kJSSetScrollPositionType);
 791   position.Set(kJSPositionX, pp::Var(x / device_scale_));
 792   PostMessage(position);
 793 }
 794
 795 void OutOfProcessInstance::ScrollToY(int y) {
 796   pp::VarDictionary position;
 797   position.Set(kType, kJSSetScrollPositionType);
 798   position.Set(kJSPositionY, pp::Var(y / device_scale_));
 799   PostMessage(position);
 800 }
 801
 802 void OutOfProcessInstance::ScrollToPage(int page) {
 803   if (engine_->GetNumberOfPages() == 0)
 804     return;
 805
 806   pp::VarDictionary message;
 807   message.Set(kType, kJSGoToPageType);
 808   message.Set(kJSPageNumber, pp::Var(page));
 809   PostMessage(message);
 810 }
 811
 812 void OutOfProcessInstance::NavigateTo(const std::string& url,
 813                                       bool open_in_new_tab) {
 814   std::string url_copy(url);
 815
 816   // Empty |url_copy| is ok, and will effectively be a reload.
 817   // Skip the code below so an empty URL does not turn into "http://", which
 818   // will cause GURL to fail a DCHECK.
 819   if (!url_copy.empty()) {
 820     // If |url_copy| starts with '#', then it's for the same URL with a
 821     // different URL fragment.
 822     if (url_copy[0] == '#') {
 823       url_copy = url_ + url_copy;
 824     }
 825     // If there's no scheme, add http.
 826     if (url_copy.find("://") == std::string::npos &&
 827         url_copy.find("mailto:") == std::string::npos) {
 828       url_copy = std::string("http://") + url_copy;
 829     }
 830     // Make sure |url_copy| starts with a valid scheme.
 831     if (url_copy.find("http://") != 0 &&
 832         url_copy.find("https://") != 0 &&
 833         url_copy.find("ftp://") != 0 &&
 834         url_copy.find("file://") != 0 &&
 835         url_copy.find("mailto:") != 0) {
 836       return;
 837     }
 838     // Make sure |url_copy| is not only a scheme.
 839     if (url_copy == "http://" ||
 840         url_copy == "https://" ||
 841         url_copy == "ftp://" ||
 842         url_copy == "file://" ||
 843         url_copy == "mailto:") {
 844       return;
 845     }
 846   }
 847   pp::VarDictionary message;
 848   message.Set(kType, kJSNavigateType);
 849   message.Set(kJSNavigateUrl, url_copy);
 850   message.Set(kJSNavigateNewTab, open_in_new_tab);
 851   PostMessage(message);
 852 }
 853
 854 void OutOfProcessInstance::UpdateCursor(PP_CursorType_Dev cursor) {
 855   if (cursor == cursor_)
 856     return;
 857   cursor_ = cursor;
 858
 859   const PPB_CursorControl_Dev* cursor_interface =
 860       reinterpret_cast<const PPB_CursorControl_Dev*>(
 861       pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
 862   if (!cursor_interface) {
 863     NOTREACHED();
 864     return;
 865   }
 866
 867   cursor_interface->SetCursor(
 868       pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL);
 869 }
 870
 871 void OutOfProcessInstance::UpdateTickMarks(
 872     const std::vector<pp::Rect>& tickmarks) {
 873   float inverse_scale = 1.0f / device_scale_;
 874   std::vector<pp::Rect> scaled_tickmarks = tickmarks;
 875   for (size_t i = 0; i < scaled_tickmarks.size(); i++)
 876     ScaleRect(inverse_scale, &scaled_tickmarks[i]);
 877   tickmarks_ = scaled_tickmarks;
 878 }
 879
 880 void OutOfProcessInstance::NotifyNumberOfFindResultsChanged(int total,
 881                                                             bool final_result) {
 882   // We don't want to spam the renderer with too many updates to the number of
 883   // find results. Don't send an update if we sent one too recently. If it's the
 884   // final update, we always send it though.
 885   if (final_result) {
 886     NumberOfFindResultsChanged(total, final_result);
 887     SetTickmarks(tickmarks_);
 888     return;
 889   }
 890
 891   if (recently_sent_find_update_)
 892     return;
 893
 894   NumberOfFindResultsChanged(total, final_result);
 895   SetTickmarks(tickmarks_);
 896   recently_sent_find_update_ = true;
 897   pp::CompletionCallback callback =
 898       timer_factory_.NewCallback(
 899           &OutOfProcessInstance::ResetRecentlySentFindUpdate);
 900   pp::Module::Get()->core()->CallOnMainThread(kFindResultCooldownMs,
 901                                               callback, 0);
 902 }
 903
 904 void OutOfProcessInstance::NotifySelectedFindResultChanged(
 905     int current_find_index) {
 906   SelectedFindResultChanged(current_find_index);
 907 }
 908
 909 void OutOfProcessInstance::GetDocumentPassword(
 910     pp::CompletionCallbackWithOutput<pp::Var> callback) {
 911   if (password_callback_) {
 912     NOTREACHED();
 913     return;
 914   }
 915
 916   password_callback_.reset(
 917       new pp::CompletionCallbackWithOutput<pp::Var>(callback));
 918   pp::VarDictionary message;
 919   message.Set(pp::Var(kType), pp::Var(kJSGetPasswordType));
 920   PostMessage(message);
 921 }
 922
 923 void OutOfProcessInstance::Alert(const std::string& message) {
 924   ModalDialog(this, "alert", message, std::string());
 925 }
 926
 927 bool OutOfProcessInstance::Confirm(const std::string& message) {
 928   pp::Var result = ModalDialog(this, "confirm", message, std::string());
 929   return result.is_bool() ? result.AsBool() : false;
 930 }
 931
 932 std::string OutOfProcessInstance::Prompt(const std::string& question,
 933                                          const std::string& default_answer) {
 934   pp::Var result = ModalDialog(this, "prompt", question, default_answer);
 935   return result.is_string() ? result.AsString() : std::string();
 936 }
 937
 938 std::string OutOfProcessInstance::GetURL() {
 939   return url_;
 940 }
 941
 942 void OutOfProcessInstance::Email(const std::string& to,
 943                                  const std::string& cc,
 944                                  const std::string& bcc,
 945                                  const std::string& subject,
 946                                  const std::string& body) {
 947   pp::VarDictionary message;
 948   message.Set(pp::Var(kType), pp::Var(kJSEmailType));
 949   message.Set(pp::Var(kJSEmailTo),
 950               pp::Var(net::EscapeUrlEncodedData(to, false)));
 951   message.Set(pp::Var(kJSEmailCc),
 952               pp::Var(net::EscapeUrlEncodedData(cc, false)));
 953   message.Set(pp::Var(kJSEmailBcc),
 954               pp::Var(net::EscapeUrlEncodedData(bcc, false)));
 955   message.Set(pp::Var(kJSEmailSubject),
 956               pp::Var(net::EscapeUrlEncodedData(subject, false)));
 957   message.Set(pp::Var(kJSEmailBody),
 958               pp::Var(net::EscapeUrlEncodedData(body, false)));
 959   PostMessage(message);
 960 }
 961
 962 void OutOfProcessInstance::Print() {
 963   if (!printing_enabled_ ||
 964       (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
 965        !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))) {
 966     return;
 967   }
 968
 969   pp::CompletionCallback callback =
 970       print_callback_factory_.NewCallback(&OutOfProcessInstance::OnPrint);
 971   pp::Module::Get()->core()->CallOnMainThread(0, callback);
 972 }
 973
 974 void OutOfProcessInstance::OnPrint(int32_t) {
 975   pp::PDF::Print(this);
 976 }
 977
 978 void OutOfProcessInstance::SubmitForm(const std::string& url,
 979                                       const void* data,
 980                                       int length) {
 981   pp::URLRequestInfo request(this);
 982   request.SetURL(url);
 983   request.SetMethod("POST");
 984   request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
 985
 986   pp::CompletionCallback callback =
 987       form_factory_.NewCallback(&OutOfProcessInstance::FormDidOpen);
 988   form_loader_ = CreateURLLoaderInternal();
 989   int rv = form_loader_.Open(request, callback);
 990   if (rv != PP_OK_COMPLETIONPENDING)
 991     callback.Run(rv);
 992 }
 993
 994 void OutOfProcessInstance::FormDidOpen(int32_t result) {
 995   // TODO: inform the user of success/failure.
 996   if (result != PP_OK) {
 997     NOTREACHED();
 998   }
 999 }
1000
1001 std::string OutOfProcessInstance::ShowFileSelectionDialog() {
1002   // Seems like very low priority to implement, since the pdf has no way to get
1003   // the file data anyways.  Javascript doesn't let you do this synchronously.
1004   NOTREACHED();
1005   return std::string();
1006 }
1007
1008 pp::URLLoader OutOfProcessInstance::CreateURLLoader() {
1009   if (full_) {
1010     if (!did_call_start_loading_) {
1011       did_call_start_loading_ = true;
1012       pp::PDF::DidStartLoading(this);
1013     }
1014
1015     // Disable save and print until the document is fully loaded, since they
1016     // would generate an incomplete document.  Need to do this each time we
1017     // call DidStartLoading since that resets the content restrictions.
1018     pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
1019                                    CONTENT_RESTRICTION_PRINT);
1020   }
1021
1022   return CreateURLLoaderInternal();
1023 }
1024
1025 void OutOfProcessInstance::ScheduleCallback(int id, int delay_in_ms) {
1026   pp::CompletionCallback callback =
1027       timer_factory_.NewCallback(&OutOfProcessInstance::OnClientTimerFired);
1028   pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
1029 }
1030
1031 void OutOfProcessInstance::SearchString(const base::char16* string,
1032                             const base::char16* term,
1033                             bool case_sensitive,
1034                             std::vector<SearchStringResult>* results) {
1035   PP_PrivateFindResult* pp_results;
1036   int count = 0;
1037   pp::PDF::SearchString(
1038       this,
1039       reinterpret_cast<const unsigned short*>(string),
1040       reinterpret_cast<const unsigned short*>(term),
1041       case_sensitive,
1042       &pp_results,
1043       &count);
1044
1045   results->resize(count);
1046   for (int i = 0; i < count; ++i) {
1047     (*results)[i].start_index = pp_results[i].start_index;
1048     (*results)[i].length = pp_results[i].length;
1049   }
1050
1051   pp::Memory_Dev memory;
1052   memory.MemFree(pp_results);
1053 }
1054
1055 void OutOfProcessInstance::DocumentPaintOccurred() {
1056 }
1057
1058 void OutOfProcessInstance::DocumentLoadComplete(int page_count) {
1059   // Clear focus state for OSK.
1060   FormTextFieldFocusChange(false);
1061
1062   DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1063   document_load_state_ = LOAD_STATE_COMPLETE;
1064   UserMetricsRecordAction("PDF.LoadSuccess");
1065
1066   // Note: If we are in print preview mode the scroll location is retained
1067   // across document loads so we don't want to scroll again and override it.
1068   if (IsPrintPreview()) {
1069     AppendBlankPrintPreviewPages();
1070     OnGeometryChanged(0, 0);
1071   }
1072
1073   pp::VarDictionary message;
1074   message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
1075   message.Set(pp::Var(kJSProgressPercentage), pp::Var(100)) ;
1076   PostMessage(message);
1077
1078   if (!full_)
1079     return;
1080
1081   if (did_call_start_loading_) {
1082     pp::PDF::DidStopLoading(this);
1083     did_call_start_loading_ = false;
1084   }
1085
1086   int content_restrictions =
1087       CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
1088   if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
1089     content_restrictions |= CONTENT_RESTRICTION_COPY;
1090
1091   if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1092       !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
1093     printing_enabled_ = false;
1094   }
1095
1096   pp::PDF::SetContentRestriction(this, content_restrictions);
1097
1098   uma_.HistogramCustomCounts("PDF.PageCount", page_count,
1099                              1, 1000000, 50);
1100 }
1101
1102 void OutOfProcessInstance::RotateClockwise() {
1103   engine_->RotateClockwise();
1104 }
1105
1106 void OutOfProcessInstance::RotateCounterclockwise() {
1107   engine_->RotateCounterclockwise();
1108 }
1109
1110 void OutOfProcessInstance::PreviewDocumentLoadComplete() {
1111   if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1112       preview_pages_info_.empty()) {
1113     return;
1114   }
1115
1116   preview_document_load_state_ = LOAD_STATE_COMPLETE;
1117
1118   int dest_page_index = preview_pages_info_.front().second;
1119   int src_page_index =
1120       ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
1121   if (src_page_index > 0 &&  dest_page_index > -1 && preview_engine_.get())
1122     engine_->AppendPage(preview_engine_.get(), dest_page_index);
1123
1124   preview_pages_info_.pop();
1125   // |print_preview_page_count_| is not updated yet. Do not load any
1126   // other preview pages till we get this information.
1127   if (print_preview_page_count_ == 0)
1128     return;
1129
1130   if (preview_pages_info_.size())
1131     LoadAvailablePreviewPage();
1132 }
1133
1134 void OutOfProcessInstance::DocumentLoadFailed() {
1135   DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1136   UserMetricsRecordAction("PDF.LoadFailure");
1137
1138   if (did_call_start_loading_) {
1139     pp::PDF::DidStopLoading(this);
1140     did_call_start_loading_ = false;
1141   }
1142
1143   document_load_state_ = LOAD_STATE_FAILED;
1144   paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1145
1146   // Send a progress value of -1 to indicate a failure.
1147   pp::VarDictionary message;
1148   message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
1149   message.Set(pp::Var(kJSProgressPercentage), pp::Var(-1)) ;
1150   PostMessage(message);
1151 }
1152
1153 void OutOfProcessInstance::PreviewDocumentLoadFailed() {
1154   UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
1155   if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1156       preview_pages_info_.empty()) {
1157     return;
1158   }
1159
1160   preview_document_load_state_ = LOAD_STATE_FAILED;
1161   preview_pages_info_.pop();
1162
1163   if (preview_pages_info_.size())
1164     LoadAvailablePreviewPage();
1165 }
1166
1167 pp::Instance* OutOfProcessInstance::GetPluginInstance() {
1168   return this;
1169 }
1170
1171 void OutOfProcessInstance::DocumentHasUnsupportedFeature(
1172     const std::string& feature) {
1173   std::string metric("PDF_Unsupported_");
1174   metric += feature;
1175   if (!unsupported_features_reported_.count(metric)) {
1176     unsupported_features_reported_.insert(metric);
1177     UserMetricsRecordAction(metric);
1178   }
1179
1180   // Since we use an info bar, only do this for full frame plugins..
1181   if (!full_)
1182     return;
1183
1184   if (told_browser_about_unsupported_feature_)
1185     return;
1186   told_browser_about_unsupported_feature_ = true;
1187
1188   pp::PDF::HasUnsupportedFeature(this);
1189 }
1190
1191 void OutOfProcessInstance::DocumentLoadProgress(uint32 available,
1192                                                 uint32 doc_size) {
1193   double progress = 0.0;
1194   if (doc_size == 0) {
1195     // Document size is unknown. Use heuristics.
1196     // We'll make progress logarithmic from 0 to 100M.
1197     static const double kFactor = log(100000000.0) / 100.0;
1198     if (available > 0) {
1199       progress = log(static_cast<double>(available)) / kFactor;
1200       if (progress > 100.0)
1201         progress = 100.0;
1202     }
1203   } else {
1204     progress = 100.0 * static_cast<double>(available) / doc_size;
1205   }
1206
1207   // We send 100% load progress in DocumentLoadComplete.
1208   if (progress >= 100)
1209     return;
1210
1211   // Avoid sending too many progress messages over PostMessage.
1212   if (progress > last_progress_sent_ + 1) {
1213     last_progress_sent_ = progress;
1214     pp::VarDictionary message;
1215     message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
1216     message.Set(pp::Var(kJSProgressPercentage), pp::Var(progress)) ;
1217     PostMessage(message);
1218   }
1219 }
1220
1221 void OutOfProcessInstance::FormTextFieldFocusChange(bool in_focus) {
1222   if (!text_input_.get())
1223     return;
1224   if (in_focus)
1225     text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
1226   else
1227     text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
1228 }
1229
1230 void OutOfProcessInstance::ResetRecentlySentFindUpdate(int32_t /* unused */) {
1231   recently_sent_find_update_ = false;
1232 }
1233
1234 void OutOfProcessInstance::OnGeometryChanged(double old_zoom,
1235                                              float old_device_scale) {
1236   if (zoom_ != old_zoom || device_scale_ != old_device_scale)
1237     engine_->ZoomUpdated(zoom_ * device_scale_);
1238
1239   available_area_ = pp::Rect(plugin_size_);
1240   int doc_width = GetDocumentPixelWidth();
1241   if (doc_width < available_area_.width()) {
1242     available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
1243     available_area_.set_width(doc_width);
1244   }
1245   int doc_height = GetDocumentPixelHeight();
1246   if (doc_height < available_area_.height()) {
1247     available_area_.set_height(doc_height);
1248   }
1249
1250   CalculateBackgroundParts();
1251   engine_->PageOffsetUpdated(available_area_.point());
1252   engine_->PluginSizeUpdated(available_area_.size());
1253
1254   if (!document_size_.GetArea())
1255     return;
1256   paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1257 }
1258
1259 void OutOfProcessInstance::LoadUrl(const std::string& url) {
1260   LoadUrlInternal(url, &embed_loader_, &OutOfProcessInstance::DidOpen);
1261 }
1262
1263 void OutOfProcessInstance::LoadPreviewUrl(const std::string& url) {
1264   LoadUrlInternal(url, &embed_preview_loader_,
1265                   &OutOfProcessInstance::DidOpenPreview);
1266 }
1267
1268 void OutOfProcessInstance::LoadUrlInternal(
1269     const std::string& url,
1270     pp::URLLoader* loader,
1271     void (OutOfProcessInstance::* method)(int32_t)) {
1272   pp::URLRequestInfo request(this);
1273   request.SetURL(url);
1274   request.SetMethod("GET");
1275
1276   *loader = CreateURLLoaderInternal();
1277   pp::CompletionCallback callback = loader_factory_.NewCallback(method);
1278   int rv = loader->Open(request, callback);
1279   if (rv != PP_OK_COMPLETIONPENDING)
1280     callback.Run(rv);
1281 }
1282
1283 pp::URLLoader OutOfProcessInstance::CreateURLLoaderInternal() {
1284   pp::URLLoader loader(this);
1285
1286   const PPB_URLLoaderTrusted* trusted_interface =
1287       reinterpret_cast<const PPB_URLLoaderTrusted*>(
1288           pp::Module::Get()->GetBrowserInterface(
1289               PPB_URLLOADERTRUSTED_INTERFACE));
1290   if (trusted_interface)
1291     trusted_interface->GrantUniversalAccess(loader.pp_resource());
1292   return loader;
1293 }
1294
1295 void OutOfProcessInstance::SetZoom(double scale) {
1296   double old_zoom = zoom_;
1297   zoom_ = scale;
1298   OnGeometryChanged(old_zoom, device_scale_);
1299 }
1300
1301 std::string OutOfProcessInstance::GetLocalizedString(PP_ResourceString id) {
1302   pp::Var rv(pp::PDF::GetLocalizedString(this, id));
1303   if (!rv.is_string())
1304     return std::string();
1305
1306   return rv.AsString();
1307 }
1308
1309 void OutOfProcessInstance::AppendBlankPrintPreviewPages() {
1310   if (print_preview_page_count_ == 0)
1311     return;
1312   engine_->AppendBlankPages(print_preview_page_count_);
1313   if (preview_pages_info_.size() > 0)
1314     LoadAvailablePreviewPage();
1315 }
1316
1317 bool OutOfProcessInstance::IsPrintPreview() {
1318   return IsPrintPreviewUrl(url_);
1319 }
1320
1321 void OutOfProcessInstance::ProcessPreviewPageInfo(const std::string& url,
1322                                                   int dst_page_index) {
1323   if (!IsPrintPreview())
1324     return;
1325
1326   int src_page_index = ExtractPrintPreviewPageIndex(url);
1327   if (src_page_index < 1)
1328     return;
1329
1330   preview_pages_info_.push(std::make_pair(url, dst_page_index));
1331   LoadAvailablePreviewPage();
1332 }
1333
1334 void OutOfProcessInstance::LoadAvailablePreviewPage() {
1335   if (preview_pages_info_.size() <= 0 ||
1336       document_load_state_ != LOAD_STATE_COMPLETE) {
1337     return;
1338   }
1339
1340   std::string url = preview_pages_info_.front().first;
1341   int dst_page_index = preview_pages_info_.front().second;
1342   int src_page_index = ExtractPrintPreviewPageIndex(url);
1343   if (src_page_index < 1 ||
1344       dst_page_index >= print_preview_page_count_ ||
1345       preview_document_load_state_ == LOAD_STATE_LOADING) {
1346     return;
1347   }
1348
1349   preview_document_load_state_ = LOAD_STATE_LOADING;
1350   LoadPreviewUrl(url);
1351 }
1352
1353 void OutOfProcessInstance::UserMetricsRecordAction(
1354     const std::string& action) {
1355   // TODO(raymes): Move this function to PPB_UMA_Private.
1356   pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
1357 }
1358
1359 pp::Point OutOfProcessInstance::BoundScrollOffsetToDocument(
1360     const pp::Point& scroll_offset) {
1361   int max_x = document_size_.width() * zoom_ - plugin_dip_size_.width();
1362   int x = std::max(std::min(scroll_offset.x(), max_x), 0);
1363   int max_y = document_size_.height() * zoom_ - plugin_dip_size_.height();
1364   int y = std::max(std::min(scroll_offset.y(), max_y), 0);
1365   return pp::Point(x, y);
1366 }
1367
1368 }  // namespace chrome_pdf