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 namespace chrome_pdf {
  45
  46 const char kChromePrint[] = "chrome://print/";
  47 const char kChromeExtension[] =
  48     "chrome-extension://mhjfbmdgcfjbbpaeojofohoefgiehjai";
  49
  50 // Dictionary Value key names for the document accessibility info
  51 const char kAccessibleNumberOfPages[] = "numberOfPages";
  52 const char kAccessibleLoaded[] = "loaded";
  53 const char kAccessibleCopyable[] = "copyable";
  54
  55 // PDF background colors.
  56 const uint32 kBackgroundColor = 0xFFCCCCCC;
  57 const uint32 kBackgroundColorMaterial = 0xFF525659;
  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 // Bookmarks
  81 const char kJSBookmarksType[] = "bookmarks";
  82 const char kJSBookmarks[] = "bookmarks";
  83 // Get password arguments (Plugin -> Page)
  84 const char kJSGetPasswordType[] = "getPassword";
  85 // Get password complete arguments (Page -> Plugin)
  86 const char kJSGetPasswordCompleteType[] = "getPasswordComplete";
  87 const char kJSPassword[] = "password";
  88 // Print (Page -> Plugin)
  89 const char kJSPrintType[] = "print";
  90 // Save (Page -> Plugin)
  91 const char kJSSaveType[] = "save";
  92 // Go to page (Plugin -> Page)
  93 const char kJSGoToPageType[] = "goToPage";
  94 const char kJSPageNumber[] = "page";
  95 // Reset print preview mode (Page -> Plugin)
  96 const char kJSResetPrintPreviewModeType[] = "resetPrintPreviewMode";
  97 const char kJSPrintPreviewUrl[] = "url";
  98 const char kJSPrintPreviewGrayscale[] = "grayscale";
  99 const char kJSPrintPreviewPageCount[] = "pageCount";
 100 // Load preview page (Page -> Plugin)
 101 const char kJSLoadPreviewPageType[] = "loadPreviewPage";
 102 const char kJSPreviewPageUrl[] = "url";
 103 const char kJSPreviewPageIndex[] = "index";
 104 // Set scroll position (Plugin -> Page)
 105 const char kJSSetScrollPositionType[] = "setScrollPosition";
 106 const char kJSPositionX[] = "x";
 107 const char kJSPositionY[] = "y";
 108 // Set translated strings (Plugin -> Page)
 109 const char kJSSetTranslatedStringsType[] = "setTranslatedStrings";
 110 const char kJSGetPasswordString[] = "getPasswordString";
 111 const char kJSLoadingString[] = "loadingString";
 112 const char kJSLoadFailedString[] = "loadFailedString";
 113 // Request accessibility JSON data (Page -> Plugin)
 114 const char kJSGetAccessibilityJSONType[] = "getAccessibilityJSON";
 115 const char kJSAccessibilityPageNumber[] = "page";
 116 // Reply with accessibility JSON data (Plugin -> Page)
 117 const char kJSGetAccessibilityJSONReplyType[] = "getAccessibilityJSONReply";
 118 const char kJSAccessibilityJSON[] = "json";
 119 // Cancel the stream URL request (Plugin -> Page)
 120 const char kJSCancelStreamUrlType[] = "cancelStreamUrl";
 121 // Navigate to the given URL (Plugin -> Page)
 122 const char kJSNavigateType[] = "navigate";
 123 const char kJSNavigateUrl[] = "url";
 124 const char kJSNavigateNewTab[] = "newTab";
 125 // Open the email editor with the given parameters (Plugin -> Page)
 126 const char kJSEmailType[] = "email";
 127 const char kJSEmailTo[] = "to";
 128 const char kJSEmailCc[] = "cc";
 129 const char kJSEmailBcc[] = "bcc";
 130 const char kJSEmailSubject[] = "subject";
 131 const char kJSEmailBody[] = "body";
 132 // Rotation (Page -> Plugin)
 133 const char kJSRotateClockwiseType[] = "rotateClockwise";
 134 const char kJSRotateCounterclockwiseType[] = "rotateCounterclockwise";
 135 // Select all text in the document (Page -> Plugin)
 136 const char kJSSelectAllType[] = "selectAll";
 137 // Get the selected text in the document (Page -> Plugin)
 138 const char kJSGetSelectedTextType[] = "getSelectedText";
 139 // Reply with selected text (Plugin -> Page)
 140 const char kJSGetSelectedTextReplyType[] = "getSelectedTextReply";
 141 const char kJSSelectedText[] = "selectedText";
 142
 143 // Get the named destination with the given name (Page -> Plugin)
 144 const char KJSGetNamedDestinationType[] = "getNamedDestination";
 145 const char KJSGetNamedDestination[] = "namedDestination";
 146 // Reply with the page number of the named destination (Plugin -> Page)
 147 const char kJSGetNamedDestinationReplyType[] = "getNamedDestinationReply";
 148 const char kJSNamedDestinationPageNumber[] = "pageNumber";
 149
 150 // Selecting text in document (Plugin -> Page)
 151 const char kJSSetIsSelectingType[] = "setIsSelecting";
 152 const char kJSIsSelecting[] = "isSelecting";
 153
 154 const int kFindResultCooldownMs = 100;
 155
 156 const double kMinZoom = 0.01;
 157
 158 namespace {
 159
 160 static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
 161
 162 PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
 163   pp::Var var;
 164   void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
 165   if (object) {
 166     var = static_cast<OutOfProcessInstance*>(object)->GetLinkAtPosition(
 167         pp::Point(point));
 168   }
 169   return var.Detach();
 170 }
 171
 172 void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
 173   void* object =
 174       pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
 175   if (object) {
 176     OutOfProcessInstance* obj_instance =
 177         static_cast<OutOfProcessInstance*>(object);
 178     switch (type) {
 179       case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
 180         obj_instance->RotateClockwise();
 181         break;
 182       case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
 183         obj_instance->RotateCounterclockwise();
 184         break;
 185     }
 186   }
 187 }
 188
 189 PP_Bool GetPrintPresetOptionsFromDocument(
 190     PP_Instance instance,
 191     PP_PdfPrintPresetOptions_Dev* options) {
 192   void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
 193   if (object) {
 194     OutOfProcessInstance* obj_instance =
 195         static_cast<OutOfProcessInstance*>(object);
 196     obj_instance->GetPrintPresetOptionsFromDocument(options);
 197   }
 198   return PP_TRUE;
 199 }
 200
 201 const PPP_Pdf ppp_private = {
 202   &GetLinkAtPosition,
 203   &Transform,
 204   &GetPrintPresetOptionsFromDocument
 205 };
 206
 207 int ExtractPrintPreviewPageIndex(const std::string& src_url) {
 208   // Sample |src_url| format: chrome://print/id/page_index/print.pdf
 209   std::vector<std::string> url_substr = base::SplitString(
 210       src_url.substr(strlen(kChromePrint)), "/",
 211       base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
 212   if (url_substr.size() != 3)
 213     return -1;
 214
 215   if (url_substr[2] != "print.pdf")
 216     return -1;
 217
 218   int page_index = 0;
 219   if (!base::StringToInt(url_substr[1], &page_index))
 220     return -1;
 221   return page_index;
 222 }
 223
 224 bool IsPrintPreviewUrl(const std::string& url) {
 225   return url.substr(0, strlen(kChromePrint)) == kChromePrint;
 226 }
 227
 228 void ScalePoint(float scale, pp::Point* point) {
 229   point->set_x(static_cast<int>(point->x() * scale));
 230   point->set_y(static_cast<int>(point->y() * scale));
 231 }
 232
 233 void ScaleRect(float scale, pp::Rect* rect) {
 234   int left = static_cast<int>(floorf(rect->x() * scale));
 235   int top = static_cast<int>(floorf(rect->y() * scale));
 236   int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale));
 237   int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale));
 238   rect->SetRect(left, top, right - left, bottom - top);
 239 }
 240
 241 // TODO(raymes): Remove this dependency on VarPrivate/InstancePrivate. It's
 242 // needed right now to do a synchronous call to JavaScript, but we could easily
 243 // replace this with a custom PPB_PDF function.
 244 pp::Var ModalDialog(const pp::Instance* instance,
 245                     const std::string& type,
 246                     const std::string& message,
 247                     const std::string& default_answer) {
 248   const PPB_Instance_Private* interface =
 249       reinterpret_cast<const PPB_Instance_Private*>(
 250           pp::Module::Get()->GetBrowserInterface(
 251               PPB_INSTANCE_PRIVATE_INTERFACE));
 252   pp::VarPrivate window(pp::PASS_REF,
 253       interface->GetWindowObject(instance->pp_instance()));
 254   if (default_answer.empty())
 255     return window.Call(type, message);
 256   else
 257     return window.Call(type, message, default_answer);
 258 }
 259
 260 }  // namespace
 261
 262 OutOfProcessInstance::OutOfProcessInstance(PP_Instance instance)
 263     : pp::Instance(instance),
 264       pp::Find_Private(this),
 265       pp::Printing_Dev(this),
 266       cursor_(PP_CURSORTYPE_POINTER),
 267       zoom_(1.0),
 268       device_scale_(1.0),
 269       full_(false),
 270       paint_manager_(this, this, true),
 271       first_paint_(true),
 272       document_load_state_(LOAD_STATE_LOADING),
 273       preview_document_load_state_(LOAD_STATE_COMPLETE),
 274       uma_(this),
 275       told_browser_about_unsupported_feature_(false),
 276       print_preview_page_count_(0),
 277       last_progress_sent_(0),
 278       recently_sent_find_update_(false),
 279       received_viewport_message_(false),
 280       did_call_start_loading_(false),
 281       stop_scrolling_(false),
 282       background_color_(kBackgroundColor),
 283       top_toolbar_height_(0) {
 284   loader_factory_.Initialize(this);
 285   timer_factory_.Initialize(this);
 286   form_factory_.Initialize(this);
 287   print_callback_factory_.Initialize(this);
 288   engine_.reset(PDFEngine::Create(this));
 289   pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private);
 290   AddPerInstanceObject(kPPPPdfInterface, this);
 291
 292   RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
 293   RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
 294   RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH);
 295 }
 296
 297 OutOfProcessInstance::~OutOfProcessInstance() {
 298   RemovePerInstanceObject(kPPPPdfInterface, this);
 299   // Explicitly reset the PDFEngine during destruction as it may call back into
 300   // this object.
 301   engine_.reset();
 302 }
 303
 304 bool OutOfProcessInstance::Init(uint32_t argc,
 305                                 const char* argn[],
 306                                 const char* argv[]) {
 307   // Check if the PDF is being loaded in the PDF chrome extension. We only allow
 308   // the plugin to be loaded in the extension and print preview to avoid
 309   // exposing sensitive APIs directly to external websites.
 310   pp::Var document_url_var = pp::URLUtil_Dev::Get()->GetDocumentURL(this);
 311   if (!document_url_var.is_string())
 312     return false;
 313   std::string document_url = document_url_var.AsString();
 314   std::string extension_url = std::string(kChromeExtension);
 315   std::string print_preview_url = std::string(kChromePrint);
 316   if (!base::StringPiece(document_url).starts_with(kChromeExtension) &&
 317       !base::StringPiece(document_url).starts_with(kChromePrint)) {
 318     return false;
 319   }
 320
 321   // Check if the plugin is full frame. This is passed in from JS.
 322   for (uint32_t i = 0; i < argc; ++i) {
 323     if (strcmp(argn[i], "full-frame") == 0) {
 324       full_ = true;
 325       break;
 326     }
 327   }
 328
 329   // Only allow the plugin to handle find requests if it is full frame.
 330   if (full_)
 331     SetPluginToHandleFindRequests();
 332
 333   // Send translated strings to the extension where they will be displayed.
 334   // TODO(raymes): It would be better to get these in the extension directly
 335   // through an API but no such API currently exists.
 336   pp::VarDictionary translated_strings;
 337   translated_strings.Set(kType, kJSSetTranslatedStringsType);
 338   translated_strings.Set(kJSGetPasswordString,
 339       GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
 340   translated_strings.Set(kJSLoadingString,
 341       GetLocalizedString(PP_RESOURCESTRING_PDFLOADING));
 342   translated_strings.Set(kJSLoadFailedString,
 343       GetLocalizedString(PP_RESOURCESTRING_PDFLOAD_FAILED));
 344   PostMessage(translated_strings);
 345
 346   text_input_.reset(new pp::TextInput_Dev(this));
 347
 348   const char* stream_url = nullptr;
 349   const char* original_url = nullptr;
 350   const char* headers = nullptr;
 351   bool is_material = false;
 352   for (uint32_t i = 0; i < argc; ++i) {
 353     if (strcmp(argn[i], "src") == 0)
 354       original_url = argv[i];
 355     else if (strcmp(argn[i], "stream-url") == 0)
 356       stream_url = argv[i];
 357     else if (strcmp(argn[i], "headers") == 0)
 358       headers = argv[i];
 359     else if (strcmp(argn[i], "is-material") == 0)
 360       is_material = true;
 361     else if (strcmp(argn[i], "top-toolbar-height") == 0)
 362       base::StringToInt(argv[i], &top_toolbar_height_);
 363   }
 364
 365   if (is_material)
 366     background_color_ = kBackgroundColorMaterial;
 367   else
 368     background_color_ = kBackgroundColor;
 369
 370   if (!original_url)
 371     return false;
 372
 373   if (!stream_url)
 374     stream_url = original_url;
 375
 376   // If we're in print preview mode we don't need to load the document yet.
 377   // A |kJSResetPrintPreviewModeType| message will be sent to the plugin letting
 378   // it know the url to load. By not loading here we avoid loading the same
 379   // document twice.
 380   if (IsPrintPreviewUrl(original_url))
 381     return true;
 382
 383   LoadUrl(stream_url);
 384   url_ = original_url;
 385   return engine_->New(original_url, headers);
 386 }
 387
 388 void OutOfProcessInstance::HandleMessage(const pp::Var& message) {
 389   pp::VarDictionary dict(message);
 390   if (!dict.Get(kType).is_string()) {
 391     NOTREACHED();
 392     return;
 393   }
 394
 395   std::string type = dict.Get(kType).AsString();
 396
 397   if (type == kJSViewportType &&
 398       dict.Get(pp::Var(kJSXOffset)).is_number() &&
 399       dict.Get(pp::Var(kJSYOffset)).is_number() &&
 400       dict.Get(pp::Var(kJSZoom)).is_number()) {
 401     received_viewport_message_ = true;
 402     stop_scrolling_ = false;
 403     double zoom = dict.Get(pp::Var(kJSZoom)).AsDouble();
 404     pp::FloatPoint scroll_offset(dict.Get(pp::Var(kJSXOffset)).AsDouble(),
 405                                  dict.Get(pp::Var(kJSYOffset)).AsDouble());
 406
 407     // Bound the input parameters.
 408     zoom = std::max(kMinZoom, zoom);
 409     SetZoom(zoom);
 410     scroll_offset = BoundScrollOffsetToDocument(scroll_offset);
 411     engine_->ScrolledToXPosition(scroll_offset.x() * device_scale_);
 412     engine_->ScrolledToYPosition(scroll_offset.y() * device_scale_);
 413   } else if (type == kJSGetPasswordCompleteType &&
 414              dict.Get(pp::Var(kJSPassword)).is_string()) {
 415     if (password_callback_) {
 416       pp::CompletionCallbackWithOutput<pp::Var> callback = *password_callback_;
 417       password_callback_.reset();
 418       *callback.output() = dict.Get(pp::Var(kJSPassword)).pp_var();
 419       callback.Run(PP_OK);
 420     } else {
 421       NOTREACHED();
 422     }
 423   } else if (type == kJSPrintType) {
 424     Print();
 425   } else if (type == kJSSaveType) {
 426     pp::PDF::SaveAs(this);
 427   } else if (type == kJSRotateClockwiseType) {
 428     RotateClockwise();
 429   } else if (type == kJSRotateCounterclockwiseType) {
 430     RotateCounterclockwise();
 431   } else if (type == kJSSelectAllType) {
 432     engine_->SelectAll();
 433   } else if (type == kJSResetPrintPreviewModeType &&
 434              dict.Get(pp::Var(kJSPrintPreviewUrl)).is_string() &&
 435              dict.Get(pp::Var(kJSPrintPreviewGrayscale)).is_bool() &&
 436              dict.Get(pp::Var(kJSPrintPreviewPageCount)).is_int()) {
 437     url_ = dict.Get(pp::Var(kJSPrintPreviewUrl)).AsString();
 438     preview_pages_info_ = std::queue<PreviewPageInfo>();
 439     preview_document_load_state_ = LOAD_STATE_COMPLETE;
 440     document_load_state_ = LOAD_STATE_LOADING;
 441     LoadUrl(url_);
 442     preview_engine_.reset();
 443     engine_.reset(PDFEngine::Create(this));
 444     engine_->SetGrayscale(dict.Get(pp::Var(kJSPrintPreviewGrayscale)).AsBool());
 445     engine_->New(url_.c_str(), nullptr /* empty header */);
 446
 447     print_preview_page_count_ =
 448         std::max(dict.Get(pp::Var(kJSPrintPreviewPageCount)).AsInt(), 0);
 449
 450     paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
 451   } else if (type == kJSLoadPreviewPageType &&
 452              dict.Get(pp::Var(kJSPreviewPageUrl)).is_string() &&
 453              dict.Get(pp::Var(kJSPreviewPageIndex)).is_int()) {
 454     ProcessPreviewPageInfo(dict.Get(pp::Var(kJSPreviewPageUrl)).AsString(),
 455                            dict.Get(pp::Var(kJSPreviewPageIndex)).AsInt());
 456   } else if (type == kJSGetAccessibilityJSONType) {
 457     pp::VarDictionary reply;
 458     reply.Set(pp::Var(kType), pp::Var(kJSGetAccessibilityJSONReplyType));
 459     if (dict.Get(pp::Var(kJSAccessibilityPageNumber)).is_int()) {
 460       int page = dict.Get(pp::Var(kJSAccessibilityPageNumber)).AsInt();
 461       reply.Set(pp::Var(kJSAccessibilityJSON),
 462                         pp::Var(engine_->GetPageAsJSON(page)));
 463     } else {
 464       base::DictionaryValue node;
 465       node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
 466       node.SetBoolean(kAccessibleLoaded,
 467                       document_load_state_ != LOAD_STATE_LOADING);
 468       bool has_permissions =
 469           engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
 470           engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
 471       node.SetBoolean(kAccessibleCopyable, has_permissions);
 472       std::string json;
 473       base::JSONWriter::Write(node, &json);
 474       reply.Set(pp::Var(kJSAccessibilityJSON), pp::Var(json));
 475     }
 476     PostMessage(reply);
 477   } else if (type == kJSStopScrollingType) {
 478     stop_scrolling_ = true;
 479   } else if (type == kJSGetSelectedTextType) {
 480     std::string selected_text = engine_->GetSelectedText();
 481     // Always return unix newlines to JS.
 482     base::ReplaceChars(selected_text, "\r", std::string(), &selected_text);
 483     pp::VarDictionary reply;
 484     reply.Set(pp::Var(kType), pp::Var(kJSGetSelectedTextReplyType));
 485     reply.Set(pp::Var(kJSSelectedText), selected_text);
 486     PostMessage(reply);
 487   } else if (type == KJSGetNamedDestinationType &&
 488              dict.Get(pp::Var(KJSGetNamedDestination)).is_string()) {
 489     int page_number = engine_->GetNamedDestinationPage(
 490         dict.Get(pp::Var(KJSGetNamedDestination)).AsString());
 491     pp::VarDictionary reply;
 492     reply.Set(pp::Var(kType), pp::Var(kJSGetNamedDestinationReplyType));
 493     if (page_number >= 0)
 494       reply.Set(pp::Var(kJSNamedDestinationPageNumber), page_number);
 495     PostMessage(reply);
 496   } else {
 497     NOTREACHED();
 498   }
 499 }
 500
 501 bool OutOfProcessInstance::HandleInputEvent(
 502     const pp::InputEvent& event) {
 503   // To simplify things, convert the event into device coordinates if it is
 504   // a mouse event.
 505   pp::InputEvent event_device_res(event);
 506   {
 507     pp::MouseInputEvent mouse_event(event);
 508     if (!mouse_event.is_null()) {
 509       pp::Point point = mouse_event.GetPosition();
 510       pp::Point movement = mouse_event.GetMovement();
 511       ScalePoint(device_scale_, &point);
 512       ScalePoint(device_scale_, &movement);
 513       mouse_event = pp::MouseInputEvent(
 514           this,
 515           event.GetType(),
 516           event.GetTimeStamp(),
 517           event.GetModifiers(),
 518           mouse_event.GetButton(),
 519           point,
 520           mouse_event.GetClickCount(),
 521           movement);
 522       event_device_res = mouse_event;
 523     }
 524   }
 525
 526   pp::InputEvent offset_event(event_device_res);
 527   switch (offset_event.GetType()) {
 528     case PP_INPUTEVENT_TYPE_MOUSEDOWN:
 529     case PP_INPUTEVENT_TYPE_MOUSEUP:
 530     case PP_INPUTEVENT_TYPE_MOUSEMOVE:
 531     case PP_INPUTEVENT_TYPE_MOUSEENTER:
 532     case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
 533       pp::MouseInputEvent mouse_event(event_device_res);
 534       pp::MouseInputEvent mouse_event_dip(event);
 535       pp::Point point = mouse_event.GetPosition();
 536       point.set_x(point.x() - available_area_.x());
 537       offset_event = pp::MouseInputEvent(
 538           this,
 539           event.GetType(),
 540           event.GetTimeStamp(),
 541           event.GetModifiers(),
 542           mouse_event.GetButton(),
 543           point,
 544           mouse_event.GetClickCount(),
 545           mouse_event.GetMovement());
 546       break;
 547     }
 548     default:
 549       break;
 550   }
 551   if (engine_->HandleEvent(offset_event))
 552     return true;
 553
 554   // Middle click is used for scrolling and is handled by the container page.
 555   pp::MouseInputEvent mouse_event(event_device_res);
 556   if (!mouse_event.is_null() &&
 557       mouse_event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_MIDDLE) {
 558     return false;
 559   }
 560
 561   // Return true for unhandled clicks so the plugin takes focus.
 562   return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
 563 }
 564
 565 void OutOfProcessInstance::DidChangeView(const pp::View& view) {
 566   pp::Rect view_rect(view.GetRect());
 567   float old_device_scale = device_scale_;
 568   float device_scale = view.GetDeviceScale();
 569   pp::Size view_device_size(view_rect.width() * device_scale,
 570                             view_rect.height() * device_scale);
 571
 572   if (view_device_size != plugin_size_ || device_scale != device_scale_) {
 573     device_scale_ = device_scale;
 574     plugin_dip_size_ = view_rect.size();
 575     plugin_size_ = view_device_size;
 576
 577     paint_manager_.SetSize(view_device_size, device_scale_);
 578
 579     pp::Size new_image_data_size = PaintManager::GetNewContextSize(
 580         image_data_.size(),
 581         plugin_size_);
 582     if (new_image_data_size != image_data_.size()) {
 583       image_data_ = pp::ImageData(this,
 584                                   PP_IMAGEDATAFORMAT_BGRA_PREMUL,
 585                                   new_image_data_size,
 586                                   false);
 587       first_paint_ = true;
 588     }
 589
 590     if (image_data_.is_null()) {
 591       DCHECK(plugin_size_.IsEmpty());
 592       return;
 593     }
 594
 595     OnGeometryChanged(zoom_, old_device_scale);
 596   }
 597
 598   if (!stop_scrolling_) {
 599     pp::Point scroll_offset(view.GetScrollOffset());
 600     // Because view messages come from the DOM, the coordinates of the viewport
 601     // are 0-based (i.e. they do not correspond to the viewport's coordinates in
 602     // JS), so we need to subtract the toolbar height to convert them into
 603     // viewport coordinates.
 604     pp::FloatPoint scroll_offset_float(scroll_offset.x(),
 605                                        scroll_offset.y() - top_toolbar_height_);
 606     scroll_offset_float = BoundScrollOffsetToDocument(scroll_offset_float);
 607     engine_->ScrolledToXPosition(scroll_offset_float.x() * device_scale_);
 608     engine_->ScrolledToYPosition(scroll_offset_float.y() * device_scale_);
 609   }
 610 }
 611
 612 void OutOfProcessInstance::GetPrintPresetOptionsFromDocument(
 613     PP_PdfPrintPresetOptions_Dev* options) {
 614   options->is_scaling_disabled = PP_FromBool(IsPrintScalingDisabled());
 615   options->duplex =
 616       static_cast<PP_PrivateDuplexMode_Dev>(engine_->GetDuplexType());
 617   options->copies = engine_->GetCopiesToPrint();
 618   pp::Size uniform_page_size;
 619   options->is_page_size_uniform =
 620       PP_FromBool(engine_->GetPageSizeAndUniformity(&uniform_page_size));
 621   options->uniform_page_size = uniform_page_size;
 622 }
 623
 624 pp::Var OutOfProcessInstance::GetLinkAtPosition(
 625     const pp::Point& point) {
 626   pp::Point offset_point(point);
 627   ScalePoint(device_scale_, &offset_point);
 628   offset_point.set_x(offset_point.x() - available_area_.x());
 629   return engine_->GetLinkAtPosition(offset_point);
 630 }
 631
 632 uint32_t OutOfProcessInstance::QuerySupportedPrintOutputFormats() {
 633   return engine_->QuerySupportedPrintOutputFormats();
 634 }
 635
 636 int32_t OutOfProcessInstance::PrintBegin(
 637     const PP_PrintSettings_Dev& print_settings) {
 638   // For us num_pages is always equal to the number of pages in the PDF
 639   // document irrespective of the printable area.
 640   int32_t ret = engine_->GetNumberOfPages();
 641   if (!ret)
 642     return 0;
 643
 644   uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
 645   if ((print_settings.format & supported_formats) == 0)
 646     return 0;
 647
 648   print_settings_.is_printing = true;
 649   print_settings_.pepper_print_settings = print_settings;
 650   engine_->PrintBegin();
 651   return ret;
 652 }
 653
 654 pp::Resource OutOfProcessInstance::PrintPages(
 655     const PP_PrintPageNumberRange_Dev* page_ranges,
 656     uint32_t page_range_count) {
 657   if (!print_settings_.is_printing)
 658     return pp::Resource();
 659
 660   print_settings_.print_pages_called_ = true;
 661   return engine_->PrintPages(page_ranges, page_range_count,
 662                              print_settings_.pepper_print_settings);
 663 }
 664
 665 void OutOfProcessInstance::PrintEnd() {
 666   if (print_settings_.print_pages_called_)
 667     UserMetricsRecordAction("PDF.PrintPage");
 668   print_settings_.Clear();
 669   engine_->PrintEnd();
 670 }
 671
 672 bool OutOfProcessInstance::IsPrintScalingDisabled() {
 673   return !engine_->GetPrintScaling();
 674 }
 675
 676 bool OutOfProcessInstance::StartFind(const std::string& text,
 677                                                  bool case_sensitive) {
 678   engine_->StartFind(text.c_str(), case_sensitive);
 679   return true;
 680 }
 681
 682 void OutOfProcessInstance::SelectFindResult(bool forward) {
 683   engine_->SelectFindResult(forward);
 684 }
 685
 686 void OutOfProcessInstance::StopFind() {
 687   engine_->StopFind();
 688   tickmarks_.clear();
 689   SetTickmarks(tickmarks_);
 690 }
 691
 692 void OutOfProcessInstance::OnPaint(
 693     const std::vector<pp::Rect>& paint_rects,
 694     std::vector<PaintManager::ReadyRect>* ready,
 695     std::vector<pp::Rect>* pending) {
 696   if (image_data_.is_null()) {
 697     DCHECK(plugin_size_.IsEmpty());
 698     return;
 699   }
 700   if (first_paint_) {
 701     first_paint_ = false;
 702     pp::Rect rect = pp::Rect(pp::Point(), image_data_.size());
 703     FillRect(rect, background_color_);
 704     ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
 705   }
 706
 707   if (!received_viewport_message_)
 708     return;
 709
 710   engine_->PrePaint();
 711
 712   for (size_t i = 0; i < paint_rects.size(); i++) {
 713     // Intersect with plugin area since there could be pending invalidates from
 714     // when the plugin area was larger.
 715     pp::Rect rect =
 716         paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
 717     if (rect.IsEmpty())
 718       continue;
 719
 720     pp::Rect pdf_rect = available_area_.Intersect(rect);
 721     if (!pdf_rect.IsEmpty()) {
 722       pdf_rect.Offset(available_area_.x() * -1, 0);
 723
 724       std::vector<pp::Rect> pdf_ready;
 725       std::vector<pp::Rect> pdf_pending;
 726       engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
 727       for (size_t j = 0; j < pdf_ready.size(); ++j) {
 728         pdf_ready[j].Offset(available_area_.point());
 729         ready->push_back(
 730             PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
 731       }
 732       for (size_t j = 0; j < pdf_pending.size(); ++j) {
 733         pdf_pending[j].Offset(available_area_.point());
 734         pending->push_back(pdf_pending[j]);
 735       }
 736     }
 737
 738     // Ensure the region above the first page (if any) is filled;
 739     int32_t first_page_ypos = engine_->GetNumberOfPages() == 0 ?
 740         0 : engine_->GetPageScreenRect(0).y();
 741     if (rect.y() < first_page_ypos) {
 742       pp::Rect region = rect.Intersect(pp::Rect(
 743           pp::Point(), pp::Size(plugin_size_.width(), first_page_ypos)));
 744       ready->push_back(PaintManager::ReadyRect(region, image_data_, false));
 745       FillRect(region, background_color_);
 746     }
 747
 748     for (size_t j = 0; j < background_parts_.size(); ++j) {
 749       pp::Rect intersection = background_parts_[j].location.Intersect(rect);
 750       if (!intersection.IsEmpty()) {
 751         FillRect(intersection, background_parts_[j].color);
 752         ready->push_back(
 753             PaintManager::ReadyRect(intersection, image_data_, false));
 754       }
 755     }
 756   }
 757
 758   engine_->PostPaint();
 759 }
 760
 761 void OutOfProcessInstance::DidOpen(int32_t result) {
 762   if (result == PP_OK) {
 763     if (!engine_->HandleDocumentLoad(embed_loader_)) {
 764       document_load_state_ = LOAD_STATE_LOADING;
 765       DocumentLoadFailed();
 766     }
 767   } else if (result != PP_ERROR_ABORTED) {  // Can happen in tests.
 768     NOTREACHED();
 769     DocumentLoadFailed();
 770   }
 771
 772   // If it's a progressive load, cancel the stream URL request so that requests
 773   // can be made on the original URL.
 774   // TODO(raymes): Make this clearer once the in-process plugin is deleted.
 775   if (engine_->IsProgressiveLoad()) {
 776     pp::VarDictionary message;
 777     message.Set(kType, kJSCancelStreamUrlType);
 778     PostMessage(message);
 779   }
 780 }
 781
 782 void OutOfProcessInstance::DidOpenPreview(int32_t result) {
 783   if (result == PP_OK) {
 784     preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
 785     preview_engine_->HandleDocumentLoad(embed_preview_loader_);
 786   } else {
 787     NOTREACHED();
 788   }
 789 }
 790
 791 void OutOfProcessInstance::OnClientTimerFired(int32_t id) {
 792   engine_->OnCallback(id);
 793 }
 794
 795 void OutOfProcessInstance::CalculateBackgroundParts() {
 796   background_parts_.clear();
 797   int left_width = available_area_.x();
 798   int right_start = available_area_.right();
 799   int right_width = abs(plugin_size_.width() - available_area_.right());
 800   int bottom = std::min(available_area_.bottom(), plugin_size_.height());
 801
 802   // Add the left, right, and bottom rectangles.  Note: we assume only
 803   // horizontal centering.
 804   BackgroundPart part = {
 805     pp::Rect(0, 0, left_width, bottom),
 806     background_color_
 807   };
 808   if (!part.location.IsEmpty())
 809     background_parts_.push_back(part);
 810   part.location = pp::Rect(right_start, 0, right_width, bottom);
 811   if (!part.location.IsEmpty())
 812     background_parts_.push_back(part);
 813   part.location = pp::Rect(
 814       0, bottom, plugin_size_.width(), plugin_size_.height() - bottom);
 815   if (!part.location.IsEmpty())
 816     background_parts_.push_back(part);
 817 }
 818
 819 int OutOfProcessInstance::GetDocumentPixelWidth() const {
 820   return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
 821 }
 822
 823 int OutOfProcessInstance::GetDocumentPixelHeight() const {
 824   return static_cast<int>(
 825       ceil(document_size_.height() * zoom_ * device_scale_));
 826 }
 827
 828 void OutOfProcessInstance::FillRect(const pp::Rect& rect, uint32 color) {
 829   DCHECK(!image_data_.is_null() || rect.IsEmpty());
 830   uint32* buffer_start = static_cast<uint32*>(image_data_.data());
 831   int stride = image_data_.stride();
 832   uint32* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
 833   int height = rect.height();
 834   int width = rect.width();
 835   for (int y = 0; y < height; ++y) {
 836     for (int x = 0; x < width; ++x)
 837       *(ptr + x) = color;
 838     ptr += stride /4;
 839   }
 840 }
 841
 842 void OutOfProcessInstance::DocumentSizeUpdated(const pp::Size& size) {
 843   document_size_ = size;
 844
 845   pp::VarDictionary dimensions;
 846   dimensions.Set(kType, kJSDocumentDimensionsType);
 847   dimensions.Set(kJSDocumentWidth, pp::Var(document_size_.width()));
 848   dimensions.Set(kJSDocumentHeight, pp::Var(document_size_.height()));
 849   pp::VarArray page_dimensions_array;
 850   int num_pages = engine_->GetNumberOfPages();
 851   for (int i = 0; i < num_pages; ++i) {
 852     pp::Rect page_rect = engine_->GetPageRect(i);
 853     pp::VarDictionary page_dimensions;
 854     page_dimensions.Set(kJSPageX, pp::Var(page_rect.x()));
 855     page_dimensions.Set(kJSPageY, pp::Var(page_rect.y()));
 856     page_dimensions.Set(kJSPageWidth, pp::Var(page_rect.width()));
 857     page_dimensions.Set(kJSPageHeight, pp::Var(page_rect.height()));
 858     page_dimensions_array.Set(i, page_dimensions);
 859   }
 860   dimensions.Set(kJSPageDimensions, page_dimensions_array);
 861   PostMessage(dimensions);
 862
 863   OnGeometryChanged(zoom_, device_scale_);
 864 }
 865
 866 void OutOfProcessInstance::Invalidate(const pp::Rect& rect) {
 867   pp::Rect offset_rect(rect);
 868   offset_rect.Offset(available_area_.point());
 869   paint_manager_.InvalidateRect(offset_rect);
 870 }
 871
 872 void OutOfProcessInstance::Scroll(const pp::Point& point) {
 873   if (!image_data_.is_null())
 874     paint_manager_.ScrollRect(available_area_, point);
 875 }
 876
 877 void OutOfProcessInstance::ScrollToX(int x) {
 878   pp::VarDictionary position;
 879   position.Set(kType, kJSSetScrollPositionType);
 880   position.Set(kJSPositionX, pp::Var(x / device_scale_));
 881   PostMessage(position);
 882 }
 883
 884 void OutOfProcessInstance::ScrollToY(int y) {
 885   pp::VarDictionary position;
 886   position.Set(kType, kJSSetScrollPositionType);
 887   position.Set(kJSPositionY, pp::Var(y / device_scale_));
 888   PostMessage(position);
 889 }
 890
 891 void OutOfProcessInstance::ScrollToPage(int page) {
 892   if (engine_->GetNumberOfPages() == 0)
 893     return;
 894
 895   pp::VarDictionary message;
 896   message.Set(kType, kJSGoToPageType);
 897   message.Set(kJSPageNumber, pp::Var(page));
 898   PostMessage(message);
 899 }
 900
 901 void OutOfProcessInstance::NavigateTo(const std::string& url,
 902                                       bool open_in_new_tab) {
 903   pp::VarDictionary message;
 904   message.Set(kType, kJSNavigateType);
 905   message.Set(kJSNavigateUrl, url);
 906   message.Set(kJSNavigateNewTab, open_in_new_tab);
 907   PostMessage(message);
 908 }
 909
 910 void OutOfProcessInstance::UpdateCursor(PP_CursorType_Dev cursor) {
 911   if (cursor == cursor_)
 912     return;
 913   cursor_ = cursor;
 914
 915   const PPB_CursorControl_Dev* cursor_interface =
 916       reinterpret_cast<const PPB_CursorControl_Dev*>(
 917       pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
 918   if (!cursor_interface) {
 919     NOTREACHED();
 920     return;
 921   }
 922
 923   cursor_interface->SetCursor(
 924       pp_instance(), cursor_, pp::ImageData().pp_resource(), nullptr);
 925 }
 926
 927 void OutOfProcessInstance::UpdateTickMarks(
 928     const std::vector<pp::Rect>& tickmarks) {
 929   float inverse_scale = 1.0f / device_scale_;
 930   std::vector<pp::Rect> scaled_tickmarks = tickmarks;
 931   for (size_t i = 0; i < scaled_tickmarks.size(); i++)
 932     ScaleRect(inverse_scale, &scaled_tickmarks[i]);
 933   tickmarks_ = scaled_tickmarks;
 934 }
 935
 936 void OutOfProcessInstance::NotifyNumberOfFindResultsChanged(int total,
 937                                                             bool final_result) {
 938   // We don't want to spam the renderer with too many updates to the number of
 939   // find results. Don't send an update if we sent one too recently. If it's the
 940   // final update, we always send it though.
 941   if (final_result) {
 942     NumberOfFindResultsChanged(total, final_result);
 943     SetTickmarks(tickmarks_);
 944     return;
 945   }
 946
 947   if (recently_sent_find_update_)
 948     return;
 949
 950   NumberOfFindResultsChanged(total, final_result);
 951   SetTickmarks(tickmarks_);
 952   recently_sent_find_update_ = true;
 953   pp::CompletionCallback callback =
 954       timer_factory_.NewCallback(
 955           &OutOfProcessInstance::ResetRecentlySentFindUpdate);
 956   pp::Module::Get()->core()->CallOnMainThread(kFindResultCooldownMs,
 957                                               callback, 0);
 958 }
 959
 960 void OutOfProcessInstance::NotifySelectedFindResultChanged(
 961     int current_find_index) {
 962   DCHECK_GE(current_find_index, 0);
 963   SelectedFindResultChanged(current_find_index);
 964 }
 965
 966 void OutOfProcessInstance::GetDocumentPassword(
 967     pp::CompletionCallbackWithOutput<pp::Var> callback) {
 968   if (password_callback_) {
 969     NOTREACHED();
 970     return;
 971   }
 972
 973   password_callback_.reset(
 974       new pp::CompletionCallbackWithOutput<pp::Var>(callback));
 975   pp::VarDictionary message;
 976   message.Set(pp::Var(kType), pp::Var(kJSGetPasswordType));
 977   PostMessage(message);
 978 }
 979
 980 void OutOfProcessInstance::Alert(const std::string& message) {
 981   ModalDialog(this, "alert", message, std::string());
 982 }
 983
 984 bool OutOfProcessInstance::Confirm(const std::string& message) {
 985   pp::Var result = ModalDialog(this, "confirm", message, std::string());
 986   return result.is_bool() ? result.AsBool() : false;
 987 }
 988
 989 std::string OutOfProcessInstance::Prompt(const std::string& question,
 990                                          const std::string& default_answer) {
 991   pp::Var result = ModalDialog(this, "prompt", question, default_answer);
 992   return result.is_string() ? result.AsString() : std::string();
 993 }
 994
 995 std::string OutOfProcessInstance::GetURL() {
 996   return url_;
 997 }
 998
 999 void OutOfProcessInstance::Email(const std::string& to,
1000                                  const std::string& cc,
1001                                  const std::string& bcc,
1002                                  const std::string& subject,
1003                                  const std::string& body) {
1004   pp::VarDictionary message;
1005   message.Set(pp::Var(kType), pp::Var(kJSEmailType));
1006   message.Set(pp::Var(kJSEmailTo),
1007               pp::Var(net::EscapeUrlEncodedData(to, false)));
1008   message.Set(pp::Var(kJSEmailCc),
1009               pp::Var(net::EscapeUrlEncodedData(cc, false)));
1010   message.Set(pp::Var(kJSEmailBcc),
1011               pp::Var(net::EscapeUrlEncodedData(bcc, false)));
1012   message.Set(pp::Var(kJSEmailSubject),
1013               pp::Var(net::EscapeUrlEncodedData(subject, false)));
1014   message.Set(pp::Var(kJSEmailBody),
1015               pp::Var(net::EscapeUrlEncodedData(body, false)));
1016   PostMessage(message);
1017 }
1018
1019 void OutOfProcessInstance::Print() {
1020   if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1021       !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
1022     return;
1023   }
1024
1025   pp::CompletionCallback callback =
1026       print_callback_factory_.NewCallback(&OutOfProcessInstance::OnPrint);
1027   pp::Module::Get()->core()->CallOnMainThread(0, callback);
1028 }
1029
1030 void OutOfProcessInstance::OnPrint(int32_t) {
1031   pp::PDF::Print(this);
1032 }
1033
1034 void OutOfProcessInstance::SubmitForm(const std::string& url,
1035                                       const void* data,
1036                                       int length) {
1037   pp::URLRequestInfo request(this);
1038   request.SetURL(url);
1039   request.SetMethod("POST");
1040   request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
1041
1042   pp::CompletionCallback callback =
1043       form_factory_.NewCallback(&OutOfProcessInstance::FormDidOpen);
1044   form_loader_ = CreateURLLoaderInternal();
1045   int rv = form_loader_.Open(request, callback);
1046   if (rv != PP_OK_COMPLETIONPENDING)
1047     callback.Run(rv);
1048 }
1049
1050 void OutOfProcessInstance::FormDidOpen(int32_t result) {
1051   // TODO: inform the user of success/failure.
1052   if (result != PP_OK) {
1053     NOTREACHED();
1054   }
1055 }
1056
1057 std::string OutOfProcessInstance::ShowFileSelectionDialog() {
1058   // Seems like very low priority to implement, since the pdf has no way to get
1059   // the file data anyways.  Javascript doesn't let you do this synchronously.
1060   NOTREACHED();
1061   return std::string();
1062 }
1063
1064 pp::URLLoader OutOfProcessInstance::CreateURLLoader() {
1065   if (full_) {
1066     if (!did_call_start_loading_) {
1067       did_call_start_loading_ = true;
1068       pp::PDF::DidStartLoading(this);
1069     }
1070
1071     // Disable save and print until the document is fully loaded, since they
1072     // would generate an incomplete document.  Need to do this each time we
1073     // call DidStartLoading since that resets the content restrictions.
1074     pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
1075                                    CONTENT_RESTRICTION_PRINT);
1076   }
1077
1078   return CreateURLLoaderInternal();
1079 }
1080
1081 void OutOfProcessInstance::ScheduleCallback(int id, int delay_in_ms) {
1082   pp::CompletionCallback callback =
1083       timer_factory_.NewCallback(&OutOfProcessInstance::OnClientTimerFired);
1084   pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
1085 }
1086
1087 void OutOfProcessInstance::SearchString(const base::char16* string,
1088                             const base::char16* term,
1089                             bool case_sensitive,
1090                             std::vector<SearchStringResult>* results) {
1091   PP_PrivateFindResult* pp_results;
1092   int count = 0;
1093   pp::PDF::SearchString(
1094       this,
1095       reinterpret_cast<const unsigned short*>(string),
1096       reinterpret_cast<const unsigned short*>(term),
1097       case_sensitive,
1098       &pp_results,
1099       &count);
1100
1101   results->resize(count);
1102   for (int i = 0; i < count; ++i) {
1103     (*results)[i].start_index = pp_results[i].start_index;
1104     (*results)[i].length = pp_results[i].length;
1105   }
1106
1107   pp::Memory_Dev memory;
1108   memory.MemFree(pp_results);
1109 }
1110
1111 void OutOfProcessInstance::DocumentPaintOccurred() {
1112 }
1113
1114 void OutOfProcessInstance::DocumentLoadComplete(int page_count) {
1115   // Clear focus state for OSK.
1116   FormTextFieldFocusChange(false);
1117
1118   DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1119   document_load_state_ = LOAD_STATE_COMPLETE;
1120   UserMetricsRecordAction("PDF.LoadSuccess");
1121
1122   // Note: If we are in print preview mode the scroll location is retained
1123   // across document loads so we don't want to scroll again and override it.
1124   if (IsPrintPreview()) {
1125     AppendBlankPrintPreviewPages();
1126     OnGeometryChanged(0, 0);
1127   }
1128
1129   pp::VarDictionary bookmarks_message;
1130   bookmarks_message.Set(pp::Var(kType), pp::Var(kJSBookmarksType));
1131   bookmarks_message.Set(pp::Var(kJSBookmarks), engine_->GetBookmarks());
1132   PostMessage(bookmarks_message);
1133
1134   pp::VarDictionary progress_message;
1135   progress_message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
1136   progress_message.Set(pp::Var(kJSProgressPercentage), pp::Var(100));
1137   PostMessage(progress_message);
1138
1139   if (!full_)
1140     return;
1141
1142   if (did_call_start_loading_) {
1143     pp::PDF::DidStopLoading(this);
1144     did_call_start_loading_ = false;
1145   }
1146
1147   int content_restrictions =
1148       CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
1149   if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
1150     content_restrictions |= CONTENT_RESTRICTION_COPY;
1151
1152   if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1153       !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
1154     content_restrictions |= CONTENT_RESTRICTION_PRINT;
1155   }
1156
1157   pp::PDF::SetContentRestriction(this, content_restrictions);
1158
1159   uma_.HistogramCustomCounts("PDF.PageCount", page_count, 1, 1000000, 50);
1160 }
1161
1162 void OutOfProcessInstance::RotateClockwise() {
1163   engine_->RotateClockwise();
1164 }
1165
1166 void OutOfProcessInstance::RotateCounterclockwise() {
1167   engine_->RotateCounterclockwise();
1168 }
1169
1170 void OutOfProcessInstance::PreviewDocumentLoadComplete() {
1171   if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1172       preview_pages_info_.empty()) {
1173     return;
1174   }
1175
1176   preview_document_load_state_ = LOAD_STATE_COMPLETE;
1177
1178   int dest_page_index = preview_pages_info_.front().second;
1179   int src_page_index =
1180       ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
1181   if (src_page_index > 0 &&  dest_page_index > -1 && preview_engine_.get())
1182     engine_->AppendPage(preview_engine_.get(), dest_page_index);
1183
1184   preview_pages_info_.pop();
1185   // |print_preview_page_count_| is not updated yet. Do not load any
1186   // other preview pages till we get this information.
1187   if (print_preview_page_count_ == 0)
1188     return;
1189
1190   if (!preview_pages_info_.empty())
1191     LoadAvailablePreviewPage();
1192 }
1193
1194 void OutOfProcessInstance::DocumentLoadFailed() {
1195   DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1196   UserMetricsRecordAction("PDF.LoadFailure");
1197
1198   if (did_call_start_loading_) {
1199     pp::PDF::DidStopLoading(this);
1200     did_call_start_loading_ = false;
1201   }
1202
1203   document_load_state_ = LOAD_STATE_FAILED;
1204   paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1205
1206   // Send a progress value of -1 to indicate a failure.
1207   pp::VarDictionary message;
1208   message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
1209   message.Set(pp::Var(kJSProgressPercentage), pp::Var(-1));
1210   PostMessage(message);
1211 }
1212
1213 void OutOfProcessInstance::PreviewDocumentLoadFailed() {
1214   UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
1215   if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1216       preview_pages_info_.empty()) {
1217     return;
1218   }
1219
1220   preview_document_load_state_ = LOAD_STATE_FAILED;
1221   preview_pages_info_.pop();
1222
1223   if (!preview_pages_info_.empty())
1224     LoadAvailablePreviewPage();
1225 }
1226
1227 pp::Instance* OutOfProcessInstance::GetPluginInstance() {
1228   return this;
1229 }
1230
1231 void OutOfProcessInstance::DocumentHasUnsupportedFeature(
1232     const std::string& feature) {
1233   std::string metric("PDF_Unsupported_");
1234   metric += feature;
1235   if (!unsupported_features_reported_.count(metric)) {
1236     unsupported_features_reported_.insert(metric);
1237     UserMetricsRecordAction(metric);
1238   }
1239
1240   // Since we use an info bar, only do this for full frame plugins..
1241   if (!full_)
1242     return;
1243
1244   if (told_browser_about_unsupported_feature_)
1245     return;
1246   told_browser_about_unsupported_feature_ = true;
1247
1248   pp::PDF::HasUnsupportedFeature(this);
1249 }
1250
1251 void OutOfProcessInstance::DocumentLoadProgress(uint32 available,
1252                                                 uint32 doc_size) {
1253   double progress = 0.0;
1254   if (doc_size == 0) {
1255     // Document size is unknown. Use heuristics.
1256     // We'll make progress logarithmic from 0 to 100M.
1257     static const double kFactor = log(100000000.0) / 100.0;
1258     if (available > 0) {
1259       progress = log(static_cast<double>(available)) / kFactor;
1260       if (progress > 100.0)
1261         progress = 100.0;
1262     }
1263   } else {
1264     progress = 100.0 * static_cast<double>(available) / doc_size;
1265   }
1266
1267   // We send 100% load progress in DocumentLoadComplete.
1268   if (progress >= 100)
1269     return;
1270
1271   // Avoid sending too many progress messages over PostMessage.
1272   if (progress > last_progress_sent_ + 1) {
1273     last_progress_sent_ = progress;
1274     pp::VarDictionary message;
1275     message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
1276     message.Set(pp::Var(kJSProgressPercentage), pp::Var(progress));
1277     PostMessage(message);
1278   }
1279 }
1280
1281 void OutOfProcessInstance::FormTextFieldFocusChange(bool in_focus) {
1282   if (!text_input_.get())
1283     return;
1284   if (in_focus)
1285     text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
1286   else
1287     text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
1288 }
1289
1290 void OutOfProcessInstance::ResetRecentlySentFindUpdate(int32_t /* unused */) {
1291   recently_sent_find_update_ = false;
1292 }
1293
1294 void OutOfProcessInstance::OnGeometryChanged(double old_zoom,
1295                                              float old_device_scale) {
1296   if (zoom_ != old_zoom || device_scale_ != old_device_scale)
1297     engine_->ZoomUpdated(zoom_ * device_scale_);
1298
1299   available_area_ = pp::Rect(plugin_size_);
1300   int doc_width = GetDocumentPixelWidth();
1301   if (doc_width < available_area_.width()) {
1302     available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
1303     available_area_.set_width(doc_width);
1304   }
1305   int bottom_of_document =
1306       GetDocumentPixelHeight() + (top_toolbar_height_ * device_scale_);
1307   if (bottom_of_document < available_area_.height())
1308     available_area_.set_height(bottom_of_document);
1309
1310   CalculateBackgroundParts();
1311   engine_->PageOffsetUpdated(available_area_.point());
1312   engine_->PluginSizeUpdated(available_area_.size());
1313
1314   if (!document_size_.GetArea())
1315     return;
1316   paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1317 }
1318
1319 void OutOfProcessInstance::LoadUrl(const std::string& url) {
1320   LoadUrlInternal(url, &embed_loader_, &OutOfProcessInstance::DidOpen);
1321 }
1322
1323 void OutOfProcessInstance::LoadPreviewUrl(const std::string& url) {
1324   LoadUrlInternal(url, &embed_preview_loader_,
1325                   &OutOfProcessInstance::DidOpenPreview);
1326 }
1327
1328 void OutOfProcessInstance::LoadUrlInternal(
1329     const std::string& url,
1330     pp::URLLoader* loader,
1331     void (OutOfProcessInstance::* method)(int32_t)) {
1332   pp::URLRequestInfo request(this);
1333   request.SetURL(url);
1334   request.SetMethod("GET");
1335
1336   *loader = CreateURLLoaderInternal();
1337   pp::CompletionCallback callback = loader_factory_.NewCallback(method);
1338   int rv = loader->Open(request, callback);
1339   if (rv != PP_OK_COMPLETIONPENDING)
1340     callback.Run(rv);
1341 }
1342
1343 pp::URLLoader OutOfProcessInstance::CreateURLLoaderInternal() {
1344   pp::URLLoader loader(this);
1345
1346   const PPB_URLLoaderTrusted* trusted_interface =
1347       reinterpret_cast<const PPB_URLLoaderTrusted*>(
1348           pp::Module::Get()->GetBrowserInterface(
1349               PPB_URLLOADERTRUSTED_INTERFACE));
1350   if (trusted_interface)
1351     trusted_interface->GrantUniversalAccess(loader.pp_resource());
1352   return loader;
1353 }
1354
1355 void OutOfProcessInstance::SetZoom(double scale) {
1356   double old_zoom = zoom_;
1357   zoom_ = scale;
1358   OnGeometryChanged(old_zoom, device_scale_);
1359 }
1360
1361 std::string OutOfProcessInstance::GetLocalizedString(PP_ResourceString id) {
1362   pp::Var rv(pp::PDF::GetLocalizedString(this, id));
1363   if (!rv.is_string())
1364     return std::string();
1365
1366   return rv.AsString();
1367 }
1368
1369 void OutOfProcessInstance::AppendBlankPrintPreviewPages() {
1370   if (print_preview_page_count_ == 0)
1371     return;
1372   engine_->AppendBlankPages(print_preview_page_count_);
1373   if (!preview_pages_info_.empty())
1374     LoadAvailablePreviewPage();
1375 }
1376
1377 bool OutOfProcessInstance::IsPrintPreview() {
1378   return IsPrintPreviewUrl(url_);
1379 }
1380
1381 uint32 OutOfProcessInstance::GetBackgroundColor() {
1382   return background_color_;
1383 }
1384
1385 void OutOfProcessInstance::IsSelectingChanged(bool is_selecting) {
1386   pp::VarDictionary message;
1387   message.Set(kType, kJSSetIsSelectingType);
1388   message.Set(kJSIsSelecting, pp::Var(is_selecting));
1389   PostMessage(message);
1390 }
1391
1392 void OutOfProcessInstance::ProcessPreviewPageInfo(const std::string& url,
1393                                                   int dst_page_index) {
1394   if (!IsPrintPreview())
1395     return;
1396
1397   int src_page_index = ExtractPrintPreviewPageIndex(url);
1398   if (src_page_index < 1)
1399     return;
1400
1401   preview_pages_info_.push(std::make_pair(url, dst_page_index));
1402   LoadAvailablePreviewPage();
1403 }
1404
1405 void OutOfProcessInstance::LoadAvailablePreviewPage() {
1406   if (preview_pages_info_.empty() ||
1407       document_load_state_ != LOAD_STATE_COMPLETE) {
1408     return;
1409   }
1410
1411   std::string url = preview_pages_info_.front().first;
1412   int dst_page_index = preview_pages_info_.front().second;
1413   int src_page_index = ExtractPrintPreviewPageIndex(url);
1414   if (src_page_index < 1 ||
1415       dst_page_index >= print_preview_page_count_ ||
1416       preview_document_load_state_ == LOAD_STATE_LOADING) {
1417     return;
1418   }
1419
1420   preview_document_load_state_ = LOAD_STATE_LOADING;
1421   LoadPreviewUrl(url);
1422 }
1423
1424 void OutOfProcessInstance::UserMetricsRecordAction(
1425     const std::string& action) {
1426   // TODO(raymes): Move this function to PPB_UMA_Private.
1427   pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
1428 }
1429
1430 pp::FloatPoint OutOfProcessInstance::BoundScrollOffsetToDocument(
1431     const pp::FloatPoint& scroll_offset) {
1432   float max_x = document_size_.width() * zoom_ - plugin_dip_size_.width();
1433   float x = std::max(std::min(scroll_offset.x(), max_x), 0.0f);
1434   float min_y = -top_toolbar_height_;
1435   float max_y = document_size_.height() * zoom_ - plugin_dip_size_.height();
1436   float y = std::max(std::min(scroll_offset.y(), max_y), min_y);
1437   return pp::FloatPoint(x, y);
1438 }
1439
1440 }  // namespace chrome_pdf