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 #include "v8/include/v8.h"
  44
  45 #if defined(OS_MACOSX)
  46 #include "base/mac/mac_util.h"
  47 #endif
  48
  49 namespace chrome_pdf {
  50
  51 const char kChromePrint[] = "chrome://print/";
  52 const char kChromeExtension[] =
  53     "chrome-extension://mhjfbmdgcfjbbpaeojofohoefgiehjai";
  54
  55 // Dictionary Value key names for the document accessibility info
  56 const char kAccessibleNumberOfPages[] = "numberOfPages";
  57 const char kAccessibleLoaded[] = "loaded";
  58 const char kAccessibleCopyable[] = "copyable";
  59
  60 // Constants used in handling postMessage() messages.
  61 const char kType[] = "type";
  62 // Viewport message arguments. (Page -> Plugin).
  63 const char kJSViewportType[] = "viewport";
  64 const char kJSXOffset[] = "xOffset";
  65 const char kJSYOffset[] = "yOffset";
  66 const char kJSZoom[] = "zoom";
  67 // Stop scrolling message (Page -> Plugin)
  68 const char kJSStopScrollingType[] = "stopScrolling";
  69 // Document dimension arguments (Plugin -> Page).
  70 const char kJSDocumentDimensionsType[] = "documentDimensions";
  71 const char kJSDocumentWidth[] = "width";
  72 const char kJSDocumentHeight[] = "height";
  73 const char kJSPageDimensions[] = "pageDimensions";
  74 const char kJSPageX[] = "x";
  75 const char kJSPageY[] = "y";
  76 const char kJSPageWidth[] = "width";
  77 const char kJSPageHeight[] = "height";
  78 // Document load progress arguments (Plugin -> Page)
  79 const char kJSLoadProgressType[] = "loadProgress";
  80 const char kJSProgressPercentage[] = "progress";
  81 // Get password arguments (Plugin -> Page)
  82 const char kJSGetPasswordType[] = "getPassword";
  83 // Get password complete arguments (Page -> Plugin)
  84 const char kJSGetPasswordCompleteType[] = "getPasswordComplete";
  85 const char kJSPassword[] = "password";
  86 // Print (Page -> Plugin)
  87 const char kJSPrintType[] = "print";
  88 // Save (Page -> Plugin)
  89 const char kJSSaveType[] = "save";
  90 // Go to page (Plugin -> Page)
  91 const char kJSGoToPageType[] = "goToPage";
  92 const char kJSPageNumber[] = "page";
  93 // Reset print preview mode (Page -> Plugin)
  94 const char kJSResetPrintPreviewModeType[] = "resetPrintPreviewMode";
  95 const char kJSPrintPreviewUrl[] = "url";
  96 const char kJSPrintPreviewGrayscale[] = "grayscale";
  97 const char kJSPrintPreviewPageCount[] = "pageCount";
  98 // Load preview page (Page -> Plugin)
  99 const char kJSLoadPreviewPageType[] = "loadPreviewPage";
 100 const char kJSPreviewPageUrl[] = "url";
 101 const char kJSPreviewPageIndex[] = "index";
 102 // Set scroll position (Plugin -> Page)
 103 const char kJSSetScrollPositionType[] = "setScrollPosition";
 104 const char kJSPositionX[] = "x";
 105 const char kJSPositionY[] = "y";
 106 // Set translated strings (Plugin -> Page)
 107 const char kJSSetTranslatedStringsType[] = "setTranslatedStrings";
 108 const char kJSGetPasswordString[] = "getPasswordString";
 109 const char kJSLoadingString[] = "loadingString";
 110 const char kJSLoadFailedString[] = "loadFailedString";
 111 // Request accessibility JSON data (Page -> Plugin)
 112 const char kJSGetAccessibilityJSONType[] = "getAccessibilityJSON";
 113 const char kJSAccessibilityPageNumber[] = "page";
 114 // Reply with accessibility JSON data (Plugin -> Page)
 115 const char kJSGetAccessibilityJSONReplyType[] = "getAccessibilityJSONReply";
 116 const char kJSAccessibilityJSON[] = "json";
 117 // Cancel the stream URL request (Plugin -> Page)
 118 const char kJSCancelStreamUrlType[] = "cancelStreamUrl";
 119 // Navigate to the given URL (Plugin -> Page)
 120 const char kJSNavigateType[] = "navigate";
 121 const char kJSNavigateUrl[] = "url";
 122 const char kJSNavigateNewTab[] = "newTab";
 123 // Open the email editor with the given parameters (Plugin -> Page)
 124 const char kJSEmailType[] = "email";
 125 const char kJSEmailTo[] = "to";
 126 const char kJSEmailCc[] = "cc";
 127 const char kJSEmailBcc[] = "bcc";
 128 const char kJSEmailSubject[] = "subject";
 129 const char kJSEmailBody[] = "body";
 130 // Rotation (Page -> Plugin)
 131 const char kJSRotateClockwiseType[] = "rotateClockwise";
 132 const char kJSRotateCounterclockwiseType[] = "rotateCounterclockwise";
 133 // Select all text in the document (Page -> Plugin)
 134 const char kJSSelectAllType[] = "selectAll";
 135
 136 const int kFindResultCooldownMs = 100;
 137
 138 const double kMinZoom = 0.01;
 139
 140 namespace {
 141
 142 static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
 143
 144 PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
 145   pp::Var var;
 146   void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
 147   if (object) {
 148     var = static_cast<OutOfProcessInstance*>(object)->GetLinkAtPosition(
 149         pp::Point(point));
 150   }
 151   return var.Detach();
 152 }
 153
 154 void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
 155   void* object =
 156       pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
 157   if (object) {
 158     OutOfProcessInstance* obj_instance =
 159         static_cast<OutOfProcessInstance*>(object);
 160     switch (type) {
 161       case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
 162         obj_instance->RotateClockwise();
 163         break;
 164       case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
 165         obj_instance->RotateCounterclockwise();
 166         break;
 167     }
 168   }
 169 }
 170
 171 PP_Bool GetPrintPresetOptionsFromDocument(
 172     PP_Instance instance,
 173     PP_PdfPrintPresetOptions_Dev* options) {
 174   void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
 175   if (object) {
 176     OutOfProcessInstance* obj_instance =
 177         static_cast<OutOfProcessInstance*>(object);
 178     obj_instance->GetPrintPresetOptionsFromDocument(options);
 179   }
 180   return PP_TRUE;
 181 }
 182
 183 const PPP_Pdf ppp_private = {
 184   &GetLinkAtPosition,
 185   &Transform,
 186   &GetPrintPresetOptionsFromDocument
 187 };
 188
 189 int ExtractPrintPreviewPageIndex(const std::string& src_url) {
 190   // Sample |src_url| format: chrome://print/id/page_index/print.pdf
 191   std::vector<std::string> url_substr;
 192   base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr);
 193   if (url_substr.size() != 3)
 194     return -1;
 195
 196   if (url_substr[2] != "print.pdf")
 197     return -1;
 198
 199   int page_index = 0;
 200   if (!base::StringToInt(url_substr[1], &page_index))
 201     return -1;
 202   return page_index;
 203 }
 204
 205 bool IsPrintPreviewUrl(const std::string& url) {
 206   return url.substr(0, strlen(kChromePrint)) == kChromePrint;
 207 }
 208
 209 void ScalePoint(float scale, pp::Point* point) {
 210   point->set_x(static_cast<int>(point->x() * scale));
 211   point->set_y(static_cast<int>(point->y() * scale));
 212 }
 213
 214 void ScaleRect(float scale, pp::Rect* rect) {
 215   int left = static_cast<int>(floorf(rect->x() * scale));
 216   int top = static_cast<int>(floorf(rect->y() * scale));
 217   int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale));
 218   int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale));
 219   rect->SetRect(left, top, right - left, bottom - top);
 220 }
 221
 222 // TODO(raymes): Remove this dependency on VarPrivate/InstancePrivate. It's
 223 // needed right now to do a synchronous call to JavaScript, but we could easily
 224 // replace this with a custom PPB_PDF function.
 225 pp::Var ModalDialog(const pp::Instance* instance,
 226                     const std::string& type,
 227                     const std::string& message,
 228                     const std::string& default_answer) {
 229   const PPB_Instance_Private* interface =
 230       reinterpret_cast<const PPB_Instance_Private*>(
 231           pp::Module::Get()->GetBrowserInterface(
 232               PPB_INSTANCE_PRIVATE_INTERFACE));
 233   pp::VarPrivate window(pp::PASS_REF,
 234       interface->GetWindowObject(instance->pp_instance()));
 235   if (default_answer.empty())
 236     return window.Call(type, message);
 237   else
 238     return window.Call(type, message, default_answer);
 239 }
 240
 241 }  // namespace
 242
 243 OutOfProcessInstance::OutOfProcessInstance(PP_Instance instance)
 244     : pp::Instance(instance),
 245       pp::Find_Private(this),
 246       pp::Printing_Dev(this),
 247       pp::Selection_Dev(this),
 248       cursor_(PP_CURSORTYPE_POINTER),
 249       zoom_(1.0),
 250       device_scale_(1.0),
 251       printing_enabled_(true),
 252       full_(false),
 253       paint_manager_(this, this, true),
 254       first_paint_(true),
 255       document_load_state_(LOAD_STATE_LOADING),
 256       preview_document_load_state_(LOAD_STATE_COMPLETE),
 257       uma_(this),
 258       told_browser_about_unsupported_feature_(false),
 259       print_preview_page_count_(0),
 260       last_progress_sent_(0),
 261       recently_sent_find_update_(false),
 262       received_viewport_message_(false),
 263       did_call_start_loading_(false),
 264       stop_scrolling_(false) {
 265   loader_factory_.Initialize(this);
 266   timer_factory_.Initialize(this);
 267   form_factory_.Initialize(this);
 268   print_callback_factory_.Initialize(this);
 269   engine_.reset(PDFEngine::Create(this));
 270   pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private);
 271   AddPerInstanceObject(kPPPPdfInterface, this);
 272
 273   RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
 274   RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
 275   RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH);
 276 }
 277
 278 OutOfProcessInstance::~OutOfProcessInstance() {
 279   RemovePerInstanceObject(kPPPPdfInterface, this);
 280 }
 281
 282 bool OutOfProcessInstance::Init(uint32_t argc,
 283                                 const char* argn[],
 284                                 const char* argv[]) {
 285   v8::StartupData natives;
 286   v8::StartupData snapshot;
 287   pp::PDF::GetV8ExternalSnapshotData(this, &natives.data, &natives.raw_size,
 288                                      &snapshot.data, &snapshot.raw_size);
 289   if (natives.data) {
 290     natives.compressed_size = natives.raw_size;
 291     snapshot.compressed_size = snapshot.raw_size;
 292     v8::V8::SetNativesDataBlob(&natives);
 293     v8::V8::SetSnapshotDataBlob(&snapshot);
 294   }
 295
 296   // Check if the PDF is being loaded in the PDF chrome extension. We only allow
 297   // the plugin to be put into "full frame" mode when it is being loaded in the
 298   // extension because this enables some features that we don't want pages
 299   // abusing outside of the extension.
 300   pp::Var document_url_var = pp::URLUtil_Dev::Get()->GetDocumentURL(this);
 301   std::string document_url = document_url_var.is_string() ?
 302       document_url_var.AsString() : std::string();
 303   std::string extension_url = std::string(kChromeExtension);
 304   bool in_extension =
 305       !document_url.compare(0, extension_url.size(), extension_url);
 306
 307   if (in_extension) {
 308     // Check if the plugin is full frame. This is passed in from JS.
 309     for (uint32_t i = 0; i < argc; ++i) {
 310       if (strcmp(argn[i], "full-frame") == 0) {
 311         full_ = true;
 312         break;
 313       }
 314     }
 315   }
 316
 317   // Only allow the plugin to handle find requests if it is full frame.
 318   if (full_)
 319     SetPluginToHandleFindRequests();
 320
 321   // Send translated strings to the extension where they will be displayed.
 322   // TODO(raymes): It would be better to get these in the extension directly
 323   // through an API but no such API currently exists.
 324   pp::VarDictionary translated_strings;
 325   translated_strings.Set(kType, kJSSetTranslatedStringsType);
 326   translated_strings.Set(kJSGetPasswordString,
 327       GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
 328   translated_strings.Set(kJSLoadingString,
 329       GetLocalizedString(PP_RESOURCESTRING_PDFLOADING));
 330   translated_strings.Set(kJSLoadFailedString,
 331       GetLocalizedString(PP_RESOURCESTRING_PDFLOAD_FAILED));
 332   PostMessage(translated_strings);
 333
 334   text_input_.reset(new pp::TextInput_Dev(this));
 335
 336   const char* stream_url = NULL;
 337   const char* original_url = NULL;
 338   const char* headers = NULL;
 339   for (uint32_t i = 0; i < argc; ++i) {
 340     if (strcmp(argn[i], "src") == 0)
 341       original_url = argv[i];
 342     else if (strcmp(argn[i], "stream-url") == 0)
 343       stream_url = argv[i];
 344     else if (strcmp(argn[i], "headers") == 0)
 345       headers = argv[i];
 346   }
 347
 348   // TODO(raymes): This is a hack to ensure that if no headers are passed in
 349   // then we get the right MIME type. When the in process plugin is removed we
 350   // can fix the document loader properly and remove this hack.
 351   if (!headers || strcmp(headers, "") == 0)
 352     headers = "content-type: application/pdf";
 353
 354   if (!original_url)
 355     return false;
 356
 357   if (!stream_url)
 358     stream_url = original_url;
 359
 360   // If we're in print preview mode we don't need to load the document yet.
 361   // A |kJSResetPrintPreviewModeType| message will be sent to the plugin letting
 362   // it know the url to load. By not loading here we avoid loading the same
 363   // document twice.
 364   if (IsPrintPreviewUrl(original_url))
 365     return true;
 366
 367   LoadUrl(stream_url);
 368   url_ = original_url;
 369   return engine_->New(original_url, headers);
 370 }
 371
 372 void OutOfProcessInstance::HandleMessage(const pp::Var& message) {
 373   pp::VarDictionary dict(message);
 374   if (!dict.Get(kType).is_string()) {
 375     NOTREACHED();
 376     return;
 377   }
 378
 379   std::string type = dict.Get(kType).AsString();
 380
 381   if (type == kJSViewportType &&
 382       dict.Get(pp::Var(kJSXOffset)).is_number() &&
 383       dict.Get(pp::Var(kJSYOffset)).is_number() &&
 384       dict.Get(pp::Var(kJSZoom)).is_number()) {
 385     received_viewport_message_ = true;
 386     stop_scrolling_ = false;
 387     double zoom = dict.Get(pp::Var(kJSZoom)).AsDouble();
 388     pp::FloatPoint scroll_offset(dict.Get(pp::Var(kJSXOffset)).AsDouble(),
 389                                  dict.Get(pp::Var(kJSYOffset)).AsDouble());
 390
 391     // Bound the input parameters.
 392     zoom = std::max(kMinZoom, zoom);
 393     SetZoom(zoom);
 394     scroll_offset = BoundScrollOffsetToDocument(scroll_offset);
 395     engine_->ScrolledToXPosition(scroll_offset.x() * device_scale_);
 396     engine_->ScrolledToYPosition(scroll_offset.y() * device_scale_);
 397   } else if (type == kJSGetPasswordCompleteType &&
 398              dict.Get(pp::Var(kJSPassword)).is_string()) {
 399     if (password_callback_) {
 400       pp::CompletionCallbackWithOutput<pp::Var> callback = *password_callback_;
 401       password_callback_.reset();
 402       *callback.output() = dict.Get(pp::Var(kJSPassword)).pp_var();
 403       callback.Run(PP_OK);
 404     } else {
 405       NOTREACHED();
 406     }
 407   } else if (type == kJSPrintType) {
 408     Print();
 409   } else if (type == kJSSaveType) {
 410     pp::PDF::SaveAs(this);
 411   } else if (type == kJSRotateClockwiseType) {
 412     RotateClockwise();
 413   } else if (type == kJSRotateCounterclockwiseType) {
 414     RotateCounterclockwise();
 415   } else if (type == kJSSelectAllType) {
 416     engine_->SelectAll();
 417   } else if (type == kJSResetPrintPreviewModeType &&
 418              dict.Get(pp::Var(kJSPrintPreviewUrl)).is_string() &&
 419              dict.Get(pp::Var(kJSPrintPreviewGrayscale)).is_bool() &&
 420              dict.Get(pp::Var(kJSPrintPreviewPageCount)).is_int()) {
 421     url_ = dict.Get(pp::Var(kJSPrintPreviewUrl)).AsString();
 422     preview_pages_info_ = std::queue<PreviewPageInfo>();
 423     preview_document_load_state_ = LOAD_STATE_COMPLETE;
 424     document_load_state_ = LOAD_STATE_LOADING;
 425     LoadUrl(url_);
 426     preview_engine_.reset();
 427     engine_.reset(PDFEngine::Create(this));
 428     engine_->SetGrayscale(dict.Get(pp::Var(kJSPrintPreviewGrayscale)).AsBool());
 429     engine_->New(url_.c_str());
 430
 431     print_preview_page_count_ =
 432         std::max(dict.Get(pp::Var(kJSPrintPreviewPageCount)).AsInt(), 0);
 433
 434     paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
 435   } else if (type == kJSLoadPreviewPageType &&
 436              dict.Get(pp::Var(kJSPreviewPageUrl)).is_string() &&
 437              dict.Get(pp::Var(kJSPreviewPageIndex)).is_int()) {
 438     ProcessPreviewPageInfo(dict.Get(pp::Var(kJSPreviewPageUrl)).AsString(),
 439                            dict.Get(pp::Var(kJSPreviewPageIndex)).AsInt());
 440   } else if (type == kJSGetAccessibilityJSONType) {
 441     pp::VarDictionary reply;
 442     reply.Set(pp::Var(kType), pp::Var(kJSGetAccessibilityJSONReplyType));
 443     if (dict.Get(pp::Var(kJSAccessibilityPageNumber)).is_int()) {
 444       int page = dict.Get(pp::Var(kJSAccessibilityPageNumber)).AsInt();
 445       reply.Set(pp::Var(kJSAccessibilityJSON),
 446                         pp::Var(engine_->GetPageAsJSON(page)));
 447     } else {
 448       base::DictionaryValue node;
 449       node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
 450       node.SetBoolean(kAccessibleLoaded,
 451                       document_load_state_ != LOAD_STATE_LOADING);
 452       bool has_permissions =
 453           engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
 454           engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
 455       node.SetBoolean(kAccessibleCopyable, has_permissions);
 456       std::string json;
 457       base::JSONWriter::Write(&node, &json);
 458       reply.Set(pp::Var(kJSAccessibilityJSON), pp::Var(json));
 459     }
 460     PostMessage(reply);
 461   } else if (type == kJSStopScrollingType) {
 462     stop_scrolling_ = true;
 463   } else {
 464     NOTREACHED();
 465   }
 466 }
 467
 468 bool OutOfProcessInstance::HandleInputEvent(
 469     const pp::InputEvent& event) {
 470   // To simplify things, convert the event into device coordinates if it is
 471   // a mouse event.
 472   pp::InputEvent event_device_res(event);
 473   {
 474     pp::MouseInputEvent mouse_event(event);
 475     if (!mouse_event.is_null()) {
 476       pp::Point point = mouse_event.GetPosition();
 477       pp::Point movement = mouse_event.GetMovement();
 478       ScalePoint(device_scale_, &point);
 479       ScalePoint(device_scale_, &movement);
 480       mouse_event = pp::MouseInputEvent(
 481           this,
 482           event.GetType(),
 483           event.GetTimeStamp(),
 484           event.GetModifiers(),
 485           mouse_event.GetButton(),
 486           point,
 487           mouse_event.GetClickCount(),
 488           movement);
 489       event_device_res = mouse_event;
 490     }
 491   }
 492
 493   pp::InputEvent offset_event(event_device_res);
 494   switch (offset_event.GetType()) {
 495     case PP_INPUTEVENT_TYPE_MOUSEDOWN:
 496     case PP_INPUTEVENT_TYPE_MOUSEUP:
 497     case PP_INPUTEVENT_TYPE_MOUSEMOVE:
 498     case PP_INPUTEVENT_TYPE_MOUSEENTER:
 499     case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
 500       pp::MouseInputEvent mouse_event(event_device_res);
 501       pp::MouseInputEvent mouse_event_dip(event);
 502       pp::Point point = mouse_event.GetPosition();
 503       point.set_x(point.x() - available_area_.x());
 504       offset_event = pp::MouseInputEvent(
 505           this,
 506           event.GetType(),
 507           event.GetTimeStamp(),
 508           event.GetModifiers(),
 509           mouse_event.GetButton(),
 510           point,
 511           mouse_event.GetClickCount(),
 512           mouse_event.GetMovement());
 513       break;
 514     }
 515     default:
 516       break;
 517   }
 518   if (engine_->HandleEvent(offset_event))
 519     return true;
 520
 521   // TODO(raymes): Implement this scroll behavior in JS:
 522   // When click+dragging, scroll the document correctly.
 523
 524   // Return true for unhandled clicks so the plugin takes focus.
 525   return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
 526 }
 527
 528 void OutOfProcessInstance::DidChangeView(const pp::View& view) {
 529   pp::Rect view_rect(view.GetRect());
 530   float old_device_scale = device_scale_;
 531   float device_scale = view.GetDeviceScale();
 532   pp::Size view_device_size(view_rect.width() * device_scale,
 533                             view_rect.height() * device_scale);
 534
 535   if (view_device_size != plugin_size_ || device_scale != device_scale_) {
 536     device_scale_ = device_scale;
 537     plugin_dip_size_ = view_rect.size();
 538     plugin_size_ = view_device_size;
 539
 540     paint_manager_.SetSize(view_device_size, device_scale_);
 541
 542     pp::Size new_image_data_size = PaintManager::GetNewContextSize(
 543         image_data_.size(),
 544         plugin_size_);
 545     if (new_image_data_size != image_data_.size()) {
 546       image_data_ = pp::ImageData(this,
 547                                   PP_IMAGEDATAFORMAT_BGRA_PREMUL,
 548                                   new_image_data_size,
 549                                   false);
 550       first_paint_ = true;
 551     }
 552
 553     if (image_data_.is_null()) {
 554       DCHECK(plugin_size_.IsEmpty());
 555       return;
 556     }
 557
 558     OnGeometryChanged(zoom_, old_device_scale);
 559   }
 560
 561   if (!stop_scrolling_) {
 562     pp::Point scroll_offset(view.GetScrollOffset());
 563     pp::FloatPoint scroll_offset_float(scroll_offset.x(),
 564                                        scroll_offset.y());
 565     scroll_offset_float = BoundScrollOffsetToDocument(scroll_offset_float);
 566     engine_->ScrolledToXPosition(scroll_offset_float.x() * device_scale_);
 567     engine_->ScrolledToYPosition(scroll_offset_float.y() * device_scale_);
 568   }
 569 }
 570
 571 void OutOfProcessInstance::GetPrintPresetOptionsFromDocument(
 572     PP_PdfPrintPresetOptions_Dev* options) {
 573   options->is_scaling_disabled = PP_FromBool(IsPrintScalingDisabled());
 574   options->copies = engine_->GetCopiesToPrint();
 575 }
 576
 577 pp::Var OutOfProcessInstance::GetLinkAtPosition(
 578     const pp::Point& point) {
 579   pp::Point offset_point(point);
 580   ScalePoint(device_scale_, &offset_point);
 581   offset_point.set_x(offset_point.x() - available_area_.x());
 582   return engine_->GetLinkAtPosition(offset_point);
 583 }
 584
 585 pp::Var OutOfProcessInstance::GetSelectedText(bool html) {
 586   if (html || !engine_->HasPermission(PDFEngine::PERMISSION_COPY))
 587     return pp::Var();
 588   return engine_->GetSelectedText();
 589 }
 590
 591 uint32_t OutOfProcessInstance::QuerySupportedPrintOutputFormats() {
 592   return engine_->QuerySupportedPrintOutputFormats();
 593 }
 594
 595 int32_t OutOfProcessInstance::PrintBegin(
 596     const PP_PrintSettings_Dev& print_settings) {
 597   // For us num_pages is always equal to the number of pages in the PDF
 598   // document irrespective of the printable area.
 599   int32_t ret = engine_->GetNumberOfPages();
 600   if (!ret)
 601     return 0;
 602
 603   uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
 604   if ((print_settings.format & supported_formats) == 0)
 605     return 0;
 606
 607   print_settings_.is_printing = true;
 608   print_settings_.pepper_print_settings = print_settings;
 609   engine_->PrintBegin();
 610   return ret;
 611 }
 612
 613 pp::Resource OutOfProcessInstance::PrintPages(
 614     const PP_PrintPageNumberRange_Dev* page_ranges,
 615     uint32_t page_range_count) {
 616   if (!print_settings_.is_printing)
 617     return pp::Resource();
 618
 619   print_settings_.print_pages_called_ = true;
 620   return engine_->PrintPages(page_ranges, page_range_count,
 621                              print_settings_.pepper_print_settings);
 622 }
 623
 624 void OutOfProcessInstance::PrintEnd() {
 625   if (print_settings_.print_pages_called_)
 626     UserMetricsRecordAction("PDF.PrintPage");
 627   print_settings_.Clear();
 628   engine_->PrintEnd();
 629 }
 630
 631 bool OutOfProcessInstance::IsPrintScalingDisabled() {
 632   return !engine_->GetPrintScaling();
 633 }
 634
 635 bool OutOfProcessInstance::StartFind(const std::string& text,
 636                                                  bool case_sensitive) {
 637   engine_->StartFind(text.c_str(), case_sensitive);
 638   return true;
 639 }
 640
 641 void OutOfProcessInstance::SelectFindResult(bool forward) {
 642   engine_->SelectFindResult(forward);
 643 }
 644
 645 void OutOfProcessInstance::StopFind() {
 646   engine_->StopFind();
 647   tickmarks_.clear();
 648   SetTickmarks(tickmarks_);
 649 }
 650
 651 void OutOfProcessInstance::OnPaint(
 652     const std::vector<pp::Rect>& paint_rects,
 653     std::vector<PaintManager::ReadyRect>* ready,
 654     std::vector<pp::Rect>* pending) {
 655   if (image_data_.is_null()) {
 656     DCHECK(plugin_size_.IsEmpty());
 657     return;
 658   }
 659   if (first_paint_) {
 660     first_paint_ = false;
 661     pp::Rect rect = pp::Rect(pp::Point(), image_data_.size());
 662     FillRect(rect, kBackgroundColor);
 663     ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
 664   }
 665
 666   if (!received_viewport_message_)
 667     return;
 668
 669   engine_->PrePaint();
 670
 671   for (size_t i = 0; i < paint_rects.size(); i++) {
 672     // Intersect with plugin area since there could be pending invalidates from
 673     // when the plugin area was larger.
 674     pp::Rect rect =
 675         paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
 676     if (rect.IsEmpty())
 677       continue;
 678
 679     pp::Rect pdf_rect = available_area_.Intersect(rect);
 680     if (!pdf_rect.IsEmpty()) {
 681       pdf_rect.Offset(available_area_.x() * -1, 0);
 682
 683       std::vector<pp::Rect> pdf_ready;
 684       std::vector<pp::Rect> pdf_pending;
 685       engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
 686       for (size_t j = 0; j < pdf_ready.size(); ++j) {
 687         pdf_ready[j].Offset(available_area_.point());
 688         ready->push_back(
 689             PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
 690       }
 691       for (size_t j = 0; j < pdf_pending.size(); ++j) {
 692         pdf_pending[j].Offset(available_area_.point());
 693         pending->push_back(pdf_pending[j]);
 694       }
 695     }
 696
 697     for (size_t j = 0; j < background_parts_.size(); ++j) {
 698       pp::Rect intersection = background_parts_[j].location.Intersect(rect);
 699       if (!intersection.IsEmpty()) {
 700         FillRect(intersection, background_parts_[j].color);
 701         ready->push_back(
 702             PaintManager::ReadyRect(intersection, image_data_, false));
 703       }
 704     }
 705   }
 706
 707   engine_->PostPaint();
 708 }
 709
 710 void OutOfProcessInstance::DidOpen(int32_t result) {
 711   if (result == PP_OK) {
 712     if (!engine_->HandleDocumentLoad(embed_loader_)) {
 713       document_load_state_ = LOAD_STATE_LOADING;
 714       DocumentLoadFailed();
 715     }
 716   } else if (result != PP_ERROR_ABORTED) {  // Can happen in tests.
 717     NOTREACHED();
 718     DocumentLoadFailed();
 719   }
 720
 721   // If it's a progressive load, cancel the stream URL request so that requests
 722   // can be made on the original URL.
 723   // TODO(raymes): Make this clearer once the in-process plugin is deleted.
 724   if (engine_->IsProgressiveLoad()) {
 725     pp::VarDictionary message;
 726     message.Set(kType, kJSCancelStreamUrlType);
 727     PostMessage(message);
 728   }
 729 }
 730
 731 void OutOfProcessInstance::DidOpenPreview(int32_t result) {
 732   if (result == PP_OK) {
 733     preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
 734     preview_engine_->HandleDocumentLoad(embed_preview_loader_);
 735   } else {
 736     NOTREACHED();
 737   }
 738 }
 739
 740 void OutOfProcessInstance::OnClientTimerFired(int32_t id) {
 741   engine_->OnCallback(id);
 742 }
 743
 744 void OutOfProcessInstance::CalculateBackgroundParts() {
 745   background_parts_.clear();
 746   int left_width = available_area_.x();
 747   int right_start = available_area_.right();
 748   int right_width = abs(plugin_size_.width() - available_area_.right());
 749   int bottom = std::min(available_area_.bottom(), plugin_size_.height());
 750
 751   // Add the left, right, and bottom rectangles.  Note: we assume only
 752   // horizontal centering.
 753   BackgroundPart part = {
 754     pp::Rect(0, 0, left_width, bottom),
 755     kBackgroundColor
 756   };
 757   if (!part.location.IsEmpty())
 758     background_parts_.push_back(part);
 759   part.location = pp::Rect(right_start, 0, right_width, bottom);
 760   if (!part.location.IsEmpty())
 761     background_parts_.push_back(part);
 762   part.location = pp::Rect(
 763       0, bottom, plugin_size_.width(), plugin_size_.height() - bottom);
 764   if (!part.location.IsEmpty())
 765     background_parts_.push_back(part);
 766 }
 767
 768 int OutOfProcessInstance::GetDocumentPixelWidth() const {
 769   return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
 770 }
 771
 772 int OutOfProcessInstance::GetDocumentPixelHeight() const {
 773   return static_cast<int>(
 774       ceil(document_size_.height() * zoom_ * device_scale_));
 775 }
 776
 777 void OutOfProcessInstance::FillRect(const pp::Rect& rect, uint32 color) {
 778   DCHECK(!image_data_.is_null() || rect.IsEmpty());
 779   uint32* buffer_start = static_cast<uint32*>(image_data_.data());
 780   int stride = image_data_.stride();
 781   uint32* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
 782   int height = rect.height();
 783   int width = rect.width();
 784   for (int y = 0; y < height; ++y) {
 785     for (int x = 0; x < width; ++x)
 786       *(ptr + x) = color;
 787     ptr += stride /4;
 788   }
 789 }
 790
 791 void OutOfProcessInstance::DocumentSizeUpdated(const pp::Size& size) {
 792   document_size_ = size;
 793
 794   pp::VarDictionary dimensions;
 795   dimensions.Set(kType, kJSDocumentDimensionsType);
 796   dimensions.Set(kJSDocumentWidth, pp::Var(document_size_.width()));
 797   dimensions.Set(kJSDocumentHeight, pp::Var(document_size_.height()));
 798   pp::VarArray page_dimensions_array;
 799   int num_pages = engine_->GetNumberOfPages();
 800   for (int i = 0; i < num_pages; ++i) {
 801     pp::Rect page_rect = engine_->GetPageRect(i);
 802     pp::VarDictionary page_dimensions;
 803     page_dimensions.Set(kJSPageX, pp::Var(page_rect.x()));
 804     page_dimensions.Set(kJSPageY, pp::Var(page_rect.y()));
 805     page_dimensions.Set(kJSPageWidth, pp::Var(page_rect.width()));
 806     page_dimensions.Set(kJSPageHeight, pp::Var(page_rect.height()));
 807     page_dimensions_array.Set(i, page_dimensions);
 808   }
 809   dimensions.Set(kJSPageDimensions, page_dimensions_array);
 810   PostMessage(dimensions);
 811
 812   OnGeometryChanged(zoom_, device_scale_);
 813 }
 814
 815 void OutOfProcessInstance::Invalidate(const pp::Rect& rect) {
 816   pp::Rect offset_rect(rect);
 817   offset_rect.Offset(available_area_.point());
 818   paint_manager_.InvalidateRect(offset_rect);
 819 }
 820
 821 void OutOfProcessInstance::Scroll(const pp::Point& point) {
 822   if (!image_data_.is_null())
 823     paint_manager_.ScrollRect(available_area_, point);
 824 }
 825
 826 void OutOfProcessInstance::ScrollToX(int x) {
 827   pp::VarDictionary position;
 828   position.Set(kType, kJSSetScrollPositionType);
 829   position.Set(kJSPositionX, pp::Var(x / device_scale_));
 830   PostMessage(position);
 831 }
 832
 833 void OutOfProcessInstance::ScrollToY(int y) {
 834   pp::VarDictionary position;
 835   position.Set(kType, kJSSetScrollPositionType);
 836   position.Set(kJSPositionY, pp::Var(y / device_scale_));
 837   PostMessage(position);
 838 }
 839
 840 void OutOfProcessInstance::ScrollToPage(int page) {
 841   if (engine_->GetNumberOfPages() == 0)
 842     return;
 843
 844   pp::VarDictionary message;
 845   message.Set(kType, kJSGoToPageType);
 846   message.Set(kJSPageNumber, pp::Var(page));
 847   PostMessage(message);
 848 }
 849
 850 void OutOfProcessInstance::NavigateTo(const std::string& url,
 851                                       bool open_in_new_tab) {
 852   std::string url_copy(url);
 853
 854   // Empty |url_copy| is ok, and will effectively be a reload.
 855   // Skip the code below so an empty URL does not turn into "http://", which
 856   // will cause GURL to fail a DCHECK.
 857   if (!url_copy.empty()) {
 858     // If |url_copy| starts with '#', then it's for the same URL with a
 859     // different URL fragment.
 860     if (url_copy[0] == '#') {
 861       url_copy = url_ + url_copy;
 862     }
 863     // If there's no scheme, add http.
 864     if (url_copy.find("://") == std::string::npos &&
 865         url_copy.find("mailto:") == std::string::npos) {
 866       url_copy = std::string("http://") + url_copy;
 867     }
 868     // Make sure |url_copy| starts with a valid scheme.
 869     if (url_copy.find("http://") != 0 &&
 870         url_copy.find("https://") != 0 &&
 871         url_copy.find("ftp://") != 0 &&
 872         url_copy.find("file://") != 0 &&
 873         url_copy.find("mailto:") != 0) {
 874       return;
 875     }
 876     // Make sure |url_copy| is not only a scheme.
 877     if (url_copy == "http://" ||
 878         url_copy == "https://" ||
 879         url_copy == "ftp://" ||
 880         url_copy == "file://" ||
 881         url_copy == "mailto:") {
 882       return;
 883     }
 884   }
 885   pp::VarDictionary message;
 886   message.Set(kType, kJSNavigateType);
 887   message.Set(kJSNavigateUrl, url_copy);
 888   message.Set(kJSNavigateNewTab, open_in_new_tab);
 889   PostMessage(message);
 890 }
 891
 892 void OutOfProcessInstance::UpdateCursor(PP_CursorType_Dev cursor) {
 893   if (cursor == cursor_)
 894     return;
 895   cursor_ = cursor;
 896
 897   const PPB_CursorControl_Dev* cursor_interface =
 898       reinterpret_cast<const PPB_CursorControl_Dev*>(
 899       pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
 900   if (!cursor_interface) {
 901     NOTREACHED();
 902     return;
 903   }
 904
 905   cursor_interface->SetCursor(
 906       pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL);
 907 }
 908
 909 void OutOfProcessInstance::UpdateTickMarks(
 910     const std::vector<pp::Rect>& tickmarks) {
 911   float inverse_scale = 1.0f / device_scale_;
 912   std::vector<pp::Rect> scaled_tickmarks = tickmarks;
 913   for (size_t i = 0; i < scaled_tickmarks.size(); i++)
 914     ScaleRect(inverse_scale, &scaled_tickmarks[i]);
 915   tickmarks_ = scaled_tickmarks;
 916 }
 917
 918 void OutOfProcessInstance::NotifyNumberOfFindResultsChanged(int total,
 919                                                             bool final_result) {
 920   // We don't want to spam the renderer with too many updates to the number of
 921   // find results. Don't send an update if we sent one too recently. If it's the
 922   // final update, we always send it though.
 923   if (final_result) {
 924     NumberOfFindResultsChanged(total, final_result);
 925     SetTickmarks(tickmarks_);
 926     return;
 927   }
 928
 929   if (recently_sent_find_update_)
 930     return;
 931
 932   NumberOfFindResultsChanged(total, final_result);
 933   SetTickmarks(tickmarks_);
 934   recently_sent_find_update_ = true;
 935   pp::CompletionCallback callback =
 936       timer_factory_.NewCallback(
 937           &OutOfProcessInstance::ResetRecentlySentFindUpdate);
 938   pp::Module::Get()->core()->CallOnMainThread(kFindResultCooldownMs,
 939                                               callback, 0);
 940 }
 941
 942 void OutOfProcessInstance::NotifySelectedFindResultChanged(
 943     int current_find_index) {
 944   DCHECK_GE(current_find_index, 0);
 945   SelectedFindResultChanged(current_find_index);
 946 }
 947
 948 void OutOfProcessInstance::GetDocumentPassword(
 949     pp::CompletionCallbackWithOutput<pp::Var> callback) {
 950   if (password_callback_) {
 951     NOTREACHED();
 952     return;
 953   }
 954
 955   password_callback_.reset(
 956       new pp::CompletionCallbackWithOutput<pp::Var>(callback));
 957   pp::VarDictionary message;
 958   message.Set(pp::Var(kType), pp::Var(kJSGetPasswordType));
 959   PostMessage(message);
 960 }
 961
 962 void OutOfProcessInstance::Alert(const std::string& message) {
 963   ModalDialog(this, "alert", message, std::string());
 964 }
 965
 966 bool OutOfProcessInstance::Confirm(const std::string& message) {
 967   pp::Var result = ModalDialog(this, "confirm", message, std::string());
 968   return result.is_bool() ? result.AsBool() : false;
 969 }
 970
 971 std::string OutOfProcessInstance::Prompt(const std::string& question,
 972                                          const std::string& default_answer) {
 973   pp::Var result = ModalDialog(this, "prompt", question, default_answer);
 974   return result.is_string() ? result.AsString() : std::string();
 975 }
 976
 977 std::string OutOfProcessInstance::GetURL() {
 978   return url_;
 979 }
 980
 981 void OutOfProcessInstance::Email(const std::string& to,
 982                                  const std::string& cc,
 983                                  const std::string& bcc,
 984                                  const std::string& subject,
 985                                  const std::string& body) {
 986   pp::VarDictionary message;
 987   message.Set(pp::Var(kType), pp::Var(kJSEmailType));
 988   message.Set(pp::Var(kJSEmailTo),
 989               pp::Var(net::EscapeUrlEncodedData(to, false)));
 990   message.Set(pp::Var(kJSEmailCc),
 991               pp::Var(net::EscapeUrlEncodedData(cc, false)));
 992   message.Set(pp::Var(kJSEmailBcc),
 993               pp::Var(net::EscapeUrlEncodedData(bcc, false)));
 994   message.Set(pp::Var(kJSEmailSubject),
 995               pp::Var(net::EscapeUrlEncodedData(subject, false)));
 996   message.Set(pp::Var(kJSEmailBody),
 997               pp::Var(net::EscapeUrlEncodedData(body, false)));
 998   PostMessage(message);
 999 }
1000
1001 void OutOfProcessInstance::Print() {
1002   if (!printing_enabled_ ||
1003       (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1004        !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))) {
1005     return;
1006   }
1007
1008   pp::CompletionCallback callback =
1009       print_callback_factory_.NewCallback(&OutOfProcessInstance::OnPrint);
1010   pp::Module::Get()->core()->CallOnMainThread(0, callback);
1011 }
1012
1013 void OutOfProcessInstance::OnPrint(int32_t) {
1014   pp::PDF::Print(this);
1015 }
1016
1017 void OutOfProcessInstance::SubmitForm(const std::string& url,
1018                                       const void* data,
1019                                       int length) {
1020   pp::URLRequestInfo request(this);
1021   request.SetURL(url);
1022   request.SetMethod("POST");
1023   request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
1024
1025   pp::CompletionCallback callback =
1026       form_factory_.NewCallback(&OutOfProcessInstance::FormDidOpen);
1027   form_loader_ = CreateURLLoaderInternal();
1028   int rv = form_loader_.Open(request, callback);
1029   if (rv != PP_OK_COMPLETIONPENDING)
1030     callback.Run(rv);
1031 }
1032
1033 void OutOfProcessInstance::FormDidOpen(int32_t result) {
1034   // TODO: inform the user of success/failure.
1035   if (result != PP_OK) {
1036     NOTREACHED();
1037   }
1038 }
1039
1040 std::string OutOfProcessInstance::ShowFileSelectionDialog() {
1041   // Seems like very low priority to implement, since the pdf has no way to get
1042   // the file data anyways.  Javascript doesn't let you do this synchronously.
1043   NOTREACHED();
1044   return std::string();
1045 }
1046
1047 pp::URLLoader OutOfProcessInstance::CreateURLLoader() {
1048   if (full_) {
1049     if (!did_call_start_loading_) {
1050       did_call_start_loading_ = true;
1051       pp::PDF::DidStartLoading(this);
1052     }
1053
1054     // Disable save and print until the document is fully loaded, since they
1055     // would generate an incomplete document.  Need to do this each time we
1056     // call DidStartLoading since that resets the content restrictions.
1057     pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
1058                                    CONTENT_RESTRICTION_PRINT);
1059   }
1060
1061   return CreateURLLoaderInternal();
1062 }
1063
1064 void OutOfProcessInstance::ScheduleCallback(int id, int delay_in_ms) {
1065   pp::CompletionCallback callback =
1066       timer_factory_.NewCallback(&OutOfProcessInstance::OnClientTimerFired);
1067   pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
1068 }
1069
1070 void OutOfProcessInstance::SearchString(const base::char16* string,
1071                             const base::char16* term,
1072                             bool case_sensitive,
1073                             std::vector<SearchStringResult>* results) {
1074   PP_PrivateFindResult* pp_results;
1075   int count = 0;
1076   pp::PDF::SearchString(
1077       this,
1078       reinterpret_cast<const unsigned short*>(string),
1079       reinterpret_cast<const unsigned short*>(term),
1080       case_sensitive,
1081       &pp_results,
1082       &count);
1083
1084   results->resize(count);
1085   for (int i = 0; i < count; ++i) {
1086     (*results)[i].start_index = pp_results[i].start_index;
1087     (*results)[i].length = pp_results[i].length;
1088   }
1089
1090   pp::Memory_Dev memory;
1091   memory.MemFree(pp_results);
1092 }
1093
1094 void OutOfProcessInstance::DocumentPaintOccurred() {
1095 }
1096
1097 void OutOfProcessInstance::DocumentLoadComplete(int page_count) {
1098   // Clear focus state for OSK.
1099   FormTextFieldFocusChange(false);
1100
1101   DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1102   document_load_state_ = LOAD_STATE_COMPLETE;
1103   UserMetricsRecordAction("PDF.LoadSuccess");
1104
1105   // Note: If we are in print preview mode the scroll location is retained
1106   // across document loads so we don't want to scroll again and override it.
1107   if (IsPrintPreview()) {
1108     AppendBlankPrintPreviewPages();
1109     OnGeometryChanged(0, 0);
1110   }
1111
1112   pp::VarDictionary message;
1113   message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
1114   message.Set(pp::Var(kJSProgressPercentage), pp::Var(100)) ;
1115   PostMessage(message);
1116
1117   if (!full_)
1118     return;
1119
1120   if (did_call_start_loading_) {
1121     pp::PDF::DidStopLoading(this);
1122     did_call_start_loading_ = false;
1123   }
1124
1125   int content_restrictions =
1126       CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
1127   if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
1128     content_restrictions |= CONTENT_RESTRICTION_COPY;
1129
1130   if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1131       !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
1132     printing_enabled_ = false;
1133   }
1134
1135   pp::PDF::SetContentRestriction(this, content_restrictions);
1136
1137   uma_.HistogramCustomCounts("PDF.PageCount", page_count,
1138                              1, 1000000, 50);
1139 }
1140
1141 void OutOfProcessInstance::RotateClockwise() {
1142   engine_->RotateClockwise();
1143 }
1144
1145 void OutOfProcessInstance::RotateCounterclockwise() {
1146   engine_->RotateCounterclockwise();
1147 }
1148
1149 void OutOfProcessInstance::PreviewDocumentLoadComplete() {
1150   if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1151       preview_pages_info_.empty()) {
1152     return;
1153   }
1154
1155   preview_document_load_state_ = LOAD_STATE_COMPLETE;
1156
1157   int dest_page_index = preview_pages_info_.front().second;
1158   int src_page_index =
1159       ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
1160   if (src_page_index > 0 &&  dest_page_index > -1 && preview_engine_.get())
1161     engine_->AppendPage(preview_engine_.get(), dest_page_index);
1162
1163   preview_pages_info_.pop();
1164   // |print_preview_page_count_| is not updated yet. Do not load any
1165   // other preview pages till we get this information.
1166   if (print_preview_page_count_ == 0)
1167     return;
1168
1169   if (preview_pages_info_.size())
1170     LoadAvailablePreviewPage();
1171 }
1172
1173 void OutOfProcessInstance::DocumentLoadFailed() {
1174   DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1175   UserMetricsRecordAction("PDF.LoadFailure");
1176
1177   if (did_call_start_loading_) {
1178     pp::PDF::DidStopLoading(this);
1179     did_call_start_loading_ = false;
1180   }
1181
1182   document_load_state_ = LOAD_STATE_FAILED;
1183   paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1184
1185   // Send a progress value of -1 to indicate a failure.
1186   pp::VarDictionary message;
1187   message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
1188   message.Set(pp::Var(kJSProgressPercentage), pp::Var(-1)) ;
1189   PostMessage(message);
1190 }
1191
1192 void OutOfProcessInstance::PreviewDocumentLoadFailed() {
1193   UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
1194   if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1195       preview_pages_info_.empty()) {
1196     return;
1197   }
1198
1199   preview_document_load_state_ = LOAD_STATE_FAILED;
1200   preview_pages_info_.pop();
1201
1202   if (preview_pages_info_.size())
1203     LoadAvailablePreviewPage();
1204 }
1205
1206 pp::Instance* OutOfProcessInstance::GetPluginInstance() {
1207   return this;
1208 }
1209
1210 void OutOfProcessInstance::DocumentHasUnsupportedFeature(
1211     const std::string& feature) {
1212   std::string metric("PDF_Unsupported_");
1213   metric += feature;
1214   if (!unsupported_features_reported_.count(metric)) {
1215     unsupported_features_reported_.insert(metric);
1216     UserMetricsRecordAction(metric);
1217   }
1218
1219   // Since we use an info bar, only do this for full frame plugins..
1220   if (!full_)
1221     return;
1222
1223   if (told_browser_about_unsupported_feature_)
1224     return;
1225   told_browser_about_unsupported_feature_ = true;
1226
1227   pp::PDF::HasUnsupportedFeature(this);
1228 }
1229
1230 void OutOfProcessInstance::DocumentLoadProgress(uint32 available,
1231                                                 uint32 doc_size) {
1232   double progress = 0.0;
1233   if (doc_size == 0) {
1234     // Document size is unknown. Use heuristics.
1235     // We'll make progress logarithmic from 0 to 100M.
1236     static const double kFactor = log(100000000.0) / 100.0;
1237     if (available > 0) {
1238       progress = log(static_cast<double>(available)) / kFactor;
1239       if (progress > 100.0)
1240         progress = 100.0;
1241     }
1242   } else {
1243     progress = 100.0 * static_cast<double>(available) / doc_size;
1244   }
1245
1246   // We send 100% load progress in DocumentLoadComplete.
1247   if (progress >= 100)
1248     return;
1249
1250   // Avoid sending too many progress messages over PostMessage.
1251   if (progress > last_progress_sent_ + 1) {
1252     last_progress_sent_ = progress;
1253     pp::VarDictionary message;
1254     message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
1255     message.Set(pp::Var(kJSProgressPercentage), pp::Var(progress)) ;
1256     PostMessage(message);
1257   }
1258 }
1259
1260 void OutOfProcessInstance::FormTextFieldFocusChange(bool in_focus) {
1261   if (!text_input_.get())
1262     return;
1263   if (in_focus)
1264     text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
1265   else
1266     text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
1267 }
1268
1269 void OutOfProcessInstance::ResetRecentlySentFindUpdate(int32_t /* unused */) {
1270   recently_sent_find_update_ = false;
1271 }
1272
1273 void OutOfProcessInstance::OnGeometryChanged(double old_zoom,
1274                                              float old_device_scale) {
1275   if (zoom_ != old_zoom || device_scale_ != old_device_scale)
1276     engine_->ZoomUpdated(zoom_ * device_scale_);
1277
1278   available_area_ = pp::Rect(plugin_size_);
1279   int doc_width = GetDocumentPixelWidth();
1280   if (doc_width < available_area_.width()) {
1281     available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
1282     available_area_.set_width(doc_width);
1283   }
1284   int doc_height = GetDocumentPixelHeight();
1285   if (doc_height < available_area_.height()) {
1286     available_area_.set_height(doc_height);
1287   }
1288
1289   CalculateBackgroundParts();
1290   engine_->PageOffsetUpdated(available_area_.point());
1291   engine_->PluginSizeUpdated(available_area_.size());
1292
1293   if (!document_size_.GetArea())
1294     return;
1295   paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1296 }
1297
1298 void OutOfProcessInstance::LoadUrl(const std::string& url) {
1299   LoadUrlInternal(url, &embed_loader_, &OutOfProcessInstance::DidOpen);
1300 }
1301
1302 void OutOfProcessInstance::LoadPreviewUrl(const std::string& url) {
1303   LoadUrlInternal(url, &embed_preview_loader_,
1304                   &OutOfProcessInstance::DidOpenPreview);
1305 }
1306
1307 void OutOfProcessInstance::LoadUrlInternal(
1308     const std::string& url,
1309     pp::URLLoader* loader,
1310     void (OutOfProcessInstance::* method)(int32_t)) {
1311   pp::URLRequestInfo request(this);
1312   request.SetURL(url);
1313   request.SetMethod("GET");
1314
1315   *loader = CreateURLLoaderInternal();
1316   pp::CompletionCallback callback = loader_factory_.NewCallback(method);
1317   int rv = loader->Open(request, callback);
1318   if (rv != PP_OK_COMPLETIONPENDING)
1319     callback.Run(rv);
1320 }
1321
1322 pp::URLLoader OutOfProcessInstance::CreateURLLoaderInternal() {
1323   pp::URLLoader loader(this);
1324
1325   const PPB_URLLoaderTrusted* trusted_interface =
1326       reinterpret_cast<const PPB_URLLoaderTrusted*>(
1327           pp::Module::Get()->GetBrowserInterface(
1328               PPB_URLLOADERTRUSTED_INTERFACE));
1329   if (trusted_interface)
1330     trusted_interface->GrantUniversalAccess(loader.pp_resource());
1331   return loader;
1332 }
1333
1334 void OutOfProcessInstance::SetZoom(double scale) {
1335   double old_zoom = zoom_;
1336   zoom_ = scale;
1337   OnGeometryChanged(old_zoom, device_scale_);
1338 }
1339
1340 std::string OutOfProcessInstance::GetLocalizedString(PP_ResourceString id) {
1341   pp::Var rv(pp::PDF::GetLocalizedString(this, id));
1342   if (!rv.is_string())
1343     return std::string();
1344
1345   return rv.AsString();
1346 }
1347
1348 void OutOfProcessInstance::AppendBlankPrintPreviewPages() {
1349   if (print_preview_page_count_ == 0)
1350     return;
1351   engine_->AppendBlankPages(print_preview_page_count_);
1352   if (preview_pages_info_.size() > 0)
1353     LoadAvailablePreviewPage();
1354 }
1355
1356 bool OutOfProcessInstance::IsPrintPreview() {
1357   return IsPrintPreviewUrl(url_);
1358 }
1359
1360 void OutOfProcessInstance::ProcessPreviewPageInfo(const std::string& url,
1361                                                   int dst_page_index) {
1362   if (!IsPrintPreview())
1363     return;
1364
1365   int src_page_index = ExtractPrintPreviewPageIndex(url);
1366   if (src_page_index < 1)
1367     return;
1368
1369   preview_pages_info_.push(std::make_pair(url, dst_page_index));
1370   LoadAvailablePreviewPage();
1371 }
1372
1373 void OutOfProcessInstance::LoadAvailablePreviewPage() {
1374   if (preview_pages_info_.size() <= 0 ||
1375       document_load_state_ != LOAD_STATE_COMPLETE) {
1376     return;
1377   }
1378
1379   std::string url = preview_pages_info_.front().first;
1380   int dst_page_index = preview_pages_info_.front().second;
1381   int src_page_index = ExtractPrintPreviewPageIndex(url);
1382   if (src_page_index < 1 ||
1383       dst_page_index >= print_preview_page_count_ ||
1384       preview_document_load_state_ == LOAD_STATE_LOADING) {
1385     return;
1386   }
1387
1388   preview_document_load_state_ = LOAD_STATE_LOADING;
1389   LoadPreviewUrl(url);
1390 }
1391
1392 void OutOfProcessInstance::UserMetricsRecordAction(
1393     const std::string& action) {
1394   // TODO(raymes): Move this function to PPB_UMA_Private.
1395   pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
1396 }
1397
1398 pp::FloatPoint OutOfProcessInstance::BoundScrollOffsetToDocument(
1399     const pp::FloatPoint& scroll_offset) {
1400   float max_x = document_size_.width() * zoom_ - plugin_dip_size_.width();
1401   float x = std::max(std::min(scroll_offset.x(), max_x), 0.0f);
1402   float max_y = document_size_.height() * zoom_ - plugin_dip_size_.height();
1403   float y = std::max(std::min(scroll_offset.y(), max_y), 0.0f);
1404   return pp::FloatPoint(x, y);
1405 }
1406
1407 }  // namespace chrome_pdf