// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "pdf/out_of_process_instance.h"

#include <stddef.h>
#include <stdint.h>
#include <string.h>

#include <algorithm>
#include <list>
#include <memory>
#include <utility>

#include "base/bind.h"
#include "base/callback.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/memory/weak_ptr.h"
#include "base/notreached.h"
#include "base/numerics/safe_conversions.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/time/time.h"
#include "base/values.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "net/base/escape.h"
#include "pdf/accessibility.h"
#include "pdf/accessibility_structs.h"
#include "pdf/buildflags.h"
#include "pdf/document_attachment_info.h"
#include "pdf/document_metadata.h"
#include "pdf/pdfium/pdfium_engine.h"
#include "pdf/ppapi_migration/bitmap.h"
#include "pdf/ppapi_migration/geometry_conversions.h"
#include "pdf/ppapi_migration/graphics.h"
#include "pdf/ppapi_migration/image.h"
#include "pdf/ppapi_migration/input_event_conversions.h"
#include "pdf/ppapi_migration/printing_conversions.h"
#include "pdf/ppapi_migration/url_loader.h"
#include "pdf/ppapi_migration/value_conversions.h"
#include "ppapi/c/dev/ppb_cursor_control_dev.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/c/private/ppb_pdf.h"
#include "ppapi/cpp/core.h"
#include "ppapi/cpp/dev/buffer_dev.h"
#include "ppapi/cpp/dev/memory_dev.h"
#include "ppapi/cpp/dev/text_input_dev.h"
#include "ppapi/cpp/dev/url_util_dev.h"
#include "ppapi/cpp/graphics_2d.h"
#include "ppapi/cpp/image_data.h"
#include "ppapi/cpp/input_event.h"
#include "ppapi/cpp/module.h"
#include "ppapi/cpp/point.h"
#include "ppapi/cpp/private/pdf.h"
#include "ppapi/cpp/rect.h"
#include "ppapi/cpp/resource.h"
#include "ppapi/cpp/size.h"
#include "ppapi/cpp/var_array_buffer.h"
#include "ppapi/cpp/var_dictionary.h"
#include "third_party/abseil-cpp/absl/types/optional.h"
#include "third_party/blink/public/common/input/web_input_event.h"
#include "third_party/blink/public/web/web_print_preset_options.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkColor.h"
#include "ui/base/cursor/mojom/cursor_type.mojom-shared.h"
#include "ui/events/keycodes/keyboard_codes.h"
#include "ui/gfx/geometry/point.h"
#include "ui/gfx/geometry/point_f.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"

#if defined(OS_LINUX) || defined(OS_CHROMEOS)
#include "pdf/ppapi_migration/pdfium_font_linux.h"
#endif

namespace chrome_pdf {

namespace {

constexpr base::TimeDelta kFindResultCooldown =
    base::TimeDelta::FromMilliseconds(100);

constexpr char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;

PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
  pp::Var var;
  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
  if (object) {
    var = static_cast<OutOfProcessInstance*>(object)->GetLinkAtPosition(
        pp::Point(point));
  }
  return var.Detach();
}

void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
  if (object) {
    auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
    switch (type) {
      case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
        obj_instance->RotateClockwise();
        break;
      case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
        obj_instance->RotateCounterclockwise();
        break;
    }
  }
}

PP_Bool GetPrintPresetOptionsFromDocument(
    PP_Instance instance,
    PP_PdfPrintPresetOptions_Dev* options) {
  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
  if (object) {
    auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
    obj_instance->GetPrintPresetOptionsFromDocument(options);
  }
  return PP_TRUE;
}

void EnableAccessibility(PP_Instance instance) {
  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
  if (object) {
    auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
    obj_instance->EnableAccessibility();
  }
}

void SetCaretPosition(PP_Instance instance, const PP_FloatPoint* position) {
  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
  if (object) {
    auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
    obj_instance->SetCaretPosition(*position);
  }
}

void MoveRangeSelectionExtent(PP_Instance instance,
                              const PP_FloatPoint* extent) {
  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
  if (object) {
    auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
    obj_instance->MoveRangeSelectionExtent(*extent);
  }
}

void SetSelectionBounds(PP_Instance instance,
                        const PP_FloatPoint* base,
                        const PP_FloatPoint* extent) {
  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
  if (object) {
    auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
    obj_instance->SetSelectionBounds(*base, *extent);
  }
}

PP_Bool CanEditText(PP_Instance instance) {
  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
  if (!object)
    return PP_FALSE;

  auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
  return PP_FromBool(obj_instance->CanEditText());
}

PP_Bool HasEditableText(PP_Instance instance) {
  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
  if (!object)
    return PP_FALSE;

  auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
  return PP_FromBool(obj_instance->HasEditableText());
}

void ReplaceSelection(PP_Instance instance, const char* text) {
  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
  if (object) {
    auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
    obj_instance->ReplaceSelection(text);
  }
}

void SelectAll(PP_Instance instance) {
  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
  if (object) {
    auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
    obj_instance->SelectAll();
  }
}

PP_Bool CanUndo(PP_Instance instance) {
  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
  if (!object)
    return PP_FALSE;

  auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
  return PP_FromBool(obj_instance->CanUndo());
}

PP_Bool CanRedo(PP_Instance instance) {
  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
  if (!object)
    return PP_FALSE;

  auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
  return PP_FromBool(obj_instance->CanRedo());
}

void Undo(PP_Instance instance) {
  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
  if (object) {
    auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
    obj_instance->Undo();
  }
}

void Redo(PP_Instance instance) {
  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
  if (object) {
    auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
    obj_instance->Redo();
  }
}

PageCharacterIndex ToPageCharacterIndex(
    const PP_PdfPageCharacterIndex& pp_page_char_index) {
  return {pp_page_char_index.page_index, pp_page_char_index.char_index};
}

AccessibilityActionData ToAccessibilityActionData(
    const PP_PdfAccessibilityActionData& pp_action_data) {
  return {
      static_cast<AccessibilityAction>(pp_action_data.action),
      static_cast<AccessibilityAnnotationType>(pp_action_data.annotation_type),
      PointFromPPPoint(pp_action_data.target_point),
      RectFromPPRect(pp_action_data.target_rect),
      pp_action_data.annotation_index,
      pp_action_data.page_index,
      static_cast<AccessibilityScrollAlignment>(
          pp_action_data.horizontal_scroll_alignment),
      static_cast<AccessibilityScrollAlignment>(
          pp_action_data.vertical_scroll_alignment),
      ToPageCharacterIndex(pp_action_data.selection_start_index),
      ToPageCharacterIndex(pp_action_data.selection_end_index)};
}

void HandleAccessibilityAction(
    PP_Instance instance,
    const PP_PdfAccessibilityActionData& action_data) {
  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
  if (object) {
    auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
    obj_instance->HandleAccessibilityAction(
        ToAccessibilityActionData(action_data));
  }
}

int32_t PdfPrintBegin(PP_Instance instance,
                      const PP_PrintSettings_Dev* print_settings,
                      const PP_PdfPrintSettings_Dev* pdf_print_settings) {
  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
  if (!object)
    return 0;

  auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
  return obj_instance->PdfPrintBegin(print_settings, pdf_print_settings);
}

const PPP_Pdf ppp_private = {
    &GetLinkAtPosition,
    &Transform,
    &GetPrintPresetOptionsFromDocument,
    &EnableAccessibility,
    &SetCaretPosition,
    &MoveRangeSelectionExtent,
    &SetSelectionBounds,
    &CanEditText,
    &HasEditableText,
    &ReplaceSelection,
    &SelectAll,
    &CanUndo,
    &CanRedo,
    &Undo,
    &Redo,
    &HandleAccessibilityAction,
    &PdfPrintBegin,
};

void ScalePoint(float scale, pp::Point* point) {
  point->set_x(static_cast<int>(point->x() * scale));
  point->set_y(static_cast<int>(point->y() * scale));
}

PP_PrivateAccessibilityPageInfo ToPrivateAccessibilityPageInfo(
    const AccessibilityPageInfo& page_info) {
  PP_PrivateAccessibilityPageInfo pp_page_info;
  pp_page_info.page_index = page_info.page_index;
  pp_page_info.bounds = PPRectFromRect(page_info.bounds);
  pp_page_info.text_run_count = page_info.text_run_count;
  pp_page_info.char_count = page_info.char_count;
  return pp_page_info;
}

std::vector<PP_PrivateAccessibilityCharInfo> ToPrivateAccessibilityCharInfo(
    const std::vector<AccessibilityCharInfo>& chars) {
  std::vector<PP_PrivateAccessibilityCharInfo> pp_chars;
  pp_chars.reserve(chars.size());
  for (const auto& char_object : chars)
    pp_chars.push_back({char_object.unicode_character, char_object.char_width});
  return pp_chars;
}

pp::PDF::PrivateAccessibilityTextStyleInfo ToPrivateAccessibilityTextStyleInfo(
    const AccessibilityTextStyleInfo& style) {
  pp::PDF::PrivateAccessibilityTextStyleInfo pp_style;
  pp_style.font_name = style.font_name;
  pp_style.font_weight = style.font_weight;
  pp_style.render_mode = static_cast<PP_TextRenderingMode>(style.render_mode);
  pp_style.font_size = style.font_size;
  pp_style.fill_color = style.fill_color;
  pp_style.stroke_color = style.stroke_color;
  pp_style.is_italic = style.is_italic;
  pp_style.is_bold = style.is_bold;
  return pp_style;
}

std::vector<pp::PDF::PrivateAccessibilityTextRunInfo>
ToPrivateAccessibilityCharInfo(
    const std::vector<AccessibilityTextRunInfo>& text_runs) {
  std::vector<pp::PDF::PrivateAccessibilityTextRunInfo> pp_text_runs;
  pp_text_runs.reserve(text_runs.size());
  for (const auto& text_run : text_runs) {
    pp::PDF::PrivateAccessibilityTextRunInfo pp_text_run = {
        text_run.len, PPFloatRectFromRectF(text_run.bounds),
        static_cast<PP_PrivateDirection>(text_run.direction),
        ToPrivateAccessibilityTextStyleInfo(text_run.style)};
    pp_text_runs.push_back(std::move(pp_text_run));
  }
  return pp_text_runs;
}

pp::PDF::PrivateAccessibilityPageObjects ToPrivateAccessibilityPageObjects(
    const AccessibilityPageObjects& page_objects) {
  pp::PDF::PrivateAccessibilityPageObjects pp_page_objects;

  pp_page_objects.links.reserve(page_objects.links.size());
  for (const auto& link_info : page_objects.links) {
    pp_page_objects.links.push_back(
        {link_info.url, link_info.index_in_page,
         base::checked_cast<uint32_t>(link_info.text_range.index),
         link_info.text_range.count, PPFloatRectFromRectF(link_info.bounds)});
  }

  pp_page_objects.images.reserve(page_objects.images.size());
  for (const auto& image_info : page_objects.images) {
    pp_page_objects.images.push_back({image_info.alt_text,
                                      image_info.text_run_index,
                                      PPFloatRectFromRectF(image_info.bounds)});
  }

  pp_page_objects.highlights.reserve(page_objects.highlights.size());
  for (const auto& highlight_info : page_objects.highlights) {
    pp_page_objects.highlights.push_back(
        {highlight_info.note_text, highlight_info.index_in_page,
         base::checked_cast<uint32_t>(highlight_info.text_range.index),
         highlight_info.text_range.count,
         PPFloatRectFromRectF(highlight_info.bounds), highlight_info.color});
  }

  pp_page_objects.form_fields.text_fields.reserve(
      page_objects.form_fields.text_fields.size());
  for (const auto& text_field_info : page_objects.form_fields.text_fields) {
    pp_page_objects.form_fields.text_fields.push_back(
        {text_field_info.name, text_field_info.value,
         text_field_info.is_read_only, text_field_info.is_required,
         text_field_info.is_password, text_field_info.index_in_page,
         text_field_info.text_run_index,
         PPFloatRectFromRectF(text_field_info.bounds)});
  }

  pp_page_objects.form_fields.choice_fields.reserve(
      page_objects.form_fields.choice_fields.size());
  for (const auto& choice_field_info : page_objects.form_fields.choice_fields) {
    std::vector<pp::PDF::PrivateAccessibilityChoiceFieldOptionInfo>
        pp_choice_field_option_infos;
    pp_choice_field_option_infos.reserve(choice_field_info.options.size());
    for (const auto& option : choice_field_info.options) {
      pp_choice_field_option_infos.push_back(
          {option.name, option.is_selected,
           PPFloatRectFromRectF(option.bounds)});
    }
    pp_page_objects.form_fields.choice_fields.push_back(
        {choice_field_info.name, pp_choice_field_option_infos,
         static_cast<PP_PrivateChoiceFieldType>(choice_field_info.type),
         choice_field_info.is_read_only, choice_field_info.is_multi_select,
         choice_field_info.has_editable_text_box,
         choice_field_info.index_in_page, choice_field_info.text_run_index,
         PPFloatRectFromRectF(choice_field_info.bounds)});
  }

  pp_page_objects.form_fields.buttons.reserve(
      page_objects.form_fields.buttons.size());
  for (const auto& button_info : page_objects.form_fields.buttons) {
    pp_page_objects.form_fields.buttons.push_back(
        {button_info.name, button_info.value,
         static_cast<PP_PrivateButtonType>(button_info.type),
         button_info.is_read_only, button_info.is_checked,
         button_info.control_count, button_info.control_index,
         button_info.index_in_page, button_info.text_run_index,
         PPFloatRectFromRectF(button_info.bounds)});
  }

  return pp_page_objects;
}

}  // namespace

OutOfProcessInstance::OutOfProcessInstance(PP_Instance instance)
    : pp::Instance(instance), pp::Find_Private(this), pp::Printing_Dev(this) {
  pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private);
  AddPerInstanceObject(kPPPPdfInterface, this);

  RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
  RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
  RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH);
}

OutOfProcessInstance::~OutOfProcessInstance() {
  RemovePerInstanceObject(kPPPPdfInterface, this);
  // Explicitly destroy the PDFEngine during destruction as it may call back
  // into this object.
  DestroyPreviewEngine();
  DestroyEngine();
}

bool OutOfProcessInstance::Init(uint32_t argc,
                                const char* argn[],
                                const char* argv[]) {
  DCHECK(!engine());

  pp::Var document_url_var = pp::URLUtil_Dev::Get()->GetDocumentURL(this);
  if (!document_url_var.is_string())
    return false;

  // Check if the PDF is being loaded in the PDF chrome extension. We only allow
  // the plugin to be loaded in the extension and print preview to avoid
  // exposing sensitive APIs directly to external websites.
  //
  // This is enforced before launching the plugin process (see
  // ChromeContentBrowserClient::ShouldAllowPluginCreation), so below we just do
  // a CHECK as a defense-in-depth.
  std::string document_url = document_url_var.AsString();
  base::StringPiece document_url_piece(document_url);
  set_is_print_preview(IsPrintPreviewUrl(document_url_piece));
  ValidateDocumentUrl(document_url_piece);

  // Allow the plugin to handle find requests.
  SetPluginToHandleFindRequests();

  text_input_ = std::make_unique<pp::TextInput_Dev>(this);

  PDFiumFormFiller::ScriptOption script_option =
      PDFiumFormFiller::DefaultScriptOption();
  bool has_edits = false;
  const char* src_url = nullptr;
  const char* original_url = nullptr;
  const char* top_level_url = nullptr;
  for (uint32_t i = 0; i < argc; ++i) {
    if (strcmp(argn[i], "original-url") == 0) {
      original_url = argv[i];
    } else if (strcmp(argn[i], "src") == 0) {
      src_url = argv[i];
    } else if (strcmp(argn[i], "top-level-url") == 0) {
      top_level_url = argv[i];
    } else if (strcmp(argn[i], "full-frame") == 0) {
      set_full_frame(true);
    } else if (strcmp(argn[i], "background-color") == 0) {
      SkColor background_color;
      if (!base::StringToUint(argv[i], &background_color))
        return false;
      SetBackgroundColor(background_color);
    } else if (strcmp(argn[i], "javascript") == 0) {
      if (strcmp(argv[i], "allow") != 0)
        script_option = PDFiumFormFiller::ScriptOption::kNoJavaScript;
    } else if (strcmp(argn[i], "has-edits") == 0) {
      has_edits = true;
    }
  }

  if (!src_url)
    return false;

  if (!original_url)
    original_url = src_url;

  InitializeEngine(std::make_unique<PDFiumEngine>(this, script_option));

  // If we're in print preview mode we don't need to load the document yet.
  // A `kJSResetPrintPreviewModeType` message will be sent to the plugin letting
  // it know the url to load. By not loading here we avoid loading the same
  // document twice.
  if (IsPrintPreview())
    return true;

  LoadUrl(src_url, /*is_print_preview=*/false);
  set_url(original_url);

  // Not all edits go through the PDF plugin's form filler. The plugin instance
  // can be restarted by exiting annotation mode on ChromeOS, which can set the
  // document to an edited state.
  set_edit_mode(has_edits);
#if !BUILDFLAG(ENABLE_INK)
  DCHECK(!edit_mode());
#endif  // !BUILDFLAG(ENABLE_INK)

  pp::PDF::SetCrashData(this, original_url, top_level_url);
  return true;
}

void OutOfProcessInstance::HandleMessage(const pp::Var& message) {
  PdfViewPluginBase::HandleMessage(ValueFromVar(message));
}

bool OutOfProcessInstance::HandleInputEvent(const pp::InputEvent& event) {
  std::unique_ptr<blink::WebInputEvent> web_event = GetWebInputEvent(event);
  if (!web_event)
    return false;

  return PdfViewPluginBase::HandleInputEvent(*web_event);
}

void OutOfProcessInstance::DidChangeView(const pp::View& view) {
  UpdateGeometryOnViewChanged(RectFromPPRect(view.GetRect()),
                              view.GetDeviceScale());

  if (IsPrintPreview() && !stop_scrolling()) {
    set_scroll_position(PointFromPPPoint(view.GetScrollOffset()));
    UpdateScroll();
  }

  // Scrolling in the main PDF Viewer UI is already handled by
  // HandleUpdateScrollMessage().
}

void OutOfProcessInstance::DidChangeFocus(bool has_focus) {
  engine()->UpdateFocus(has_focus);
}

void OutOfProcessInstance::GetPrintPresetOptionsFromDocument(
    PP_PdfPrintPresetOptions_Dev* options) {
  *options =
      PPPdfPrintPresetOptionsFromWebPrintPresetOptions(GetPrintPresetOptions());
}

void OutOfProcessInstance::SetCaretPosition(const pp::FloatPoint& position) {
  pp::Point new_position(position.x(), position.y());
  ScalePoint(device_scale(), &new_position);
  new_position.set_x(new_position.x() - available_area().x());
  engine()->SetCaretPosition(PointFromPPPoint(new_position));
}

void OutOfProcessInstance::MoveRangeSelectionExtent(
    const pp::FloatPoint& extent) {
  pp::Point new_extent(extent.x(), extent.y());
  ScalePoint(device_scale(), &new_extent);
  new_extent.set_x(new_extent.x() - available_area().x());
  engine()->MoveRangeSelectionExtent(PointFromPPPoint(new_extent));
}

void OutOfProcessInstance::SetSelectionBounds(const pp::FloatPoint& base,
                                              const pp::FloatPoint& extent) {
  pp::Point new_base_point(base.x(), base.y());
  ScalePoint(device_scale(), &new_base_point);
  new_base_point.set_x(new_base_point.x() - available_area().x());

  pp::Point new_extent_point(extent.x(), extent.y());
  ScalePoint(device_scale(), &new_extent_point);
  new_extent_point.set_x(new_extent_point.x() - available_area().x());

  engine()->SetSelectionBounds(PointFromPPPoint(new_base_point),
                               PointFromPPPoint(new_extent_point));
}

pp::Var OutOfProcessInstance::GetLinkAtPosition(const pp::Point& point) {
  pp::Point offset_point(point);
  ScalePoint(device_scale(), &offset_point);
  offset_point.set_x(offset_point.x() - available_area().x());
  return engine()->GetLinkAtPosition(PointFromPPPoint(offset_point));
}

bool OutOfProcessInstance::CanEditText() {
  return engine()->CanEditText();
}

bool OutOfProcessInstance::HasEditableText() {
  return engine()->HasEditableText();
}

void OutOfProcessInstance::ReplaceSelection(const std::string& text) {
  engine()->ReplaceSelection(text);
}

void OutOfProcessInstance::SelectAll() {
  engine()->SelectAll();
}

bool OutOfProcessInstance::CanUndo() {
  return engine()->CanUndo();
}

bool OutOfProcessInstance::CanRedo() {
  return engine()->CanRedo();
}

void OutOfProcessInstance::Undo() {
  engine()->Undo();
}

void OutOfProcessInstance::Redo() {
  engine()->Redo();
}

int32_t OutOfProcessInstance::PdfPrintBegin(
    const PP_PrintSettings_Dev* print_settings,
    const PP_PdfPrintSettings_Dev* pdf_print_settings) {
  return PdfViewPluginBase::PrintBegin(
      WebPrintParamsFromPPPrintSettings(*print_settings, *pdf_print_settings));
}

uint32_t OutOfProcessInstance::QuerySupportedPrintOutputFormats() {
  if (engine()->HasPermission(DocumentPermission::kPrintHighQuality))
    return PP_PRINTOUTPUTFORMAT_PDF | PP_PRINTOUTPUTFORMAT_RASTER;
  if (engine()->HasPermission(DocumentPermission::kPrintLowQuality))
    return PP_PRINTOUTPUTFORMAT_RASTER;
  return 0;
}

int32_t OutOfProcessInstance::PrintBegin(
    const PP_PrintSettings_Dev& print_settings) {
  // Replaced with PdfPrintBegin();
  NOTREACHED();
  return 0;
}

pp::Resource OutOfProcessInstance::PrintPages(
    const PP_PrintPageNumberRange_Dev* page_ranges,
    uint32_t page_range_count) {
  const std::vector<uint8_t> pdf_data = PdfViewPluginBase::PrintPages(
      PageNumbersFromPPPrintPageNumberRange(page_ranges, page_range_count));

  // Convert buffer to Pepper type.
  pp::Buffer_Dev buffer;
  if (!pdf_data.empty()) {
    buffer = pp::Buffer_Dev(this, pdf_data.size());
    if (!buffer.is_null())
      memcpy(buffer.data(), pdf_data.data(), pdf_data.size());
  }
  return buffer;
}

void OutOfProcessInstance::PrintEnd() {
  PdfViewPluginBase::PrintEnd();
}

bool OutOfProcessInstance::IsPrintScalingDisabled() {
  return !engine()->GetPrintScaling();
}

bool OutOfProcessInstance::StartFind(const std::string& text,
                                     bool case_sensitive) {
  engine()->StartFind(text, case_sensitive);
  return true;
}

void OutOfProcessInstance::SelectFindResult(bool forward) {
  engine()->SelectFindResult(forward);
}

void OutOfProcessInstance::StopFind() {
  engine()->StopFind();
  tickmarks_.clear();
  SetTickmarks(tickmarks_);
}

void OutOfProcessInstance::DidOpen(std::unique_ptr<UrlLoader> loader,
                                   int32_t result) {
  if (result == PP_OK) {
    if (!engine()->HandleDocumentLoad(std::move(loader), GetURL())) {
      set_document_load_state(DocumentLoadState::kLoading);
      DocumentLoadFailed();
    }
  } else if (result != PP_ERROR_ABORTED) {  // Can happen in tests.
    DocumentLoadFailed();
  }
}

void OutOfProcessInstance::SendMessage(base::Value message) {
  PostMessage(VarFromValue(message));
}

void OutOfProcessInstance::SaveAs() {
  pp::PDF::SaveAs(this);
}

void OutOfProcessInstance::InitImageData(const gfx::Size& size) {
  pepper_image_data_ =
      pp::ImageData(this, PP_IMAGEDATAFORMAT_BGRA_PREMUL, PPSizeFromSize(size),
                    /*init_to_zero=*/false);
  mutable_image_data() = SkBitmapFromPPImageData(
      std::make_unique<pp::ImageData>(pepper_image_data_));
}

void OutOfProcessInstance::SetFormFieldInFocus(bool in_focus) {
  if (!text_input_)
    return;

  text_input_->SetTextInputType(in_focus ? PP_TEXTINPUT_TYPE_DEV_TEXT
                                         : PP_TEXTINPUT_TYPE_DEV_NONE);
}

void OutOfProcessInstance::UpdateCursor(ui::mojom::CursorType new_cursor_type) {
  if (cursor_type() == new_cursor_type)
    return;
  set_cursor_type(new_cursor_type);

  const PPB_CursorControl_Dev* cursor_interface =
      reinterpret_cast<const PPB_CursorControl_Dev*>(
          pp::Module::Get()->GetBrowserInterface(
              PPB_CURSOR_CONTROL_DEV_INTERFACE));

  cursor_interface->SetCursor(pp_instance(),
                              PPCursorTypeFromCursorType(cursor_type()),
                              pp::ImageData().pp_resource(), nullptr);
}

void OutOfProcessInstance::UpdateTickMarks(
    const std::vector<gfx::Rect>& tickmarks) {
  float inverse_scale = 1.0f / device_scale();
  tickmarks_.clear();
  tickmarks_.reserve(tickmarks.size());
  for (auto& tickmark : tickmarks) {
    tickmarks_.emplace_back(
        PPRectFromRect(gfx::ScaleToEnclosingRect(tickmark, inverse_scale)));
  }
}

void OutOfProcessInstance::NotifyNumberOfFindResultsChanged(int total,
                                                            bool final_result) {
  // We don't want to spam the renderer with too many updates to the number of
  // find results. Don't send an update if we sent one too recently. If it's the
  // final update, we always send it though.
  if (final_result) {
    NumberOfFindResultsChanged(total, final_result);
    SetTickmarks(tickmarks_);
    return;
  }

  if (recently_sent_find_update_)
    return;

  NumberOfFindResultsChanged(total, final_result);
  SetTickmarks(tickmarks_);
  recently_sent_find_update_ = true;
  ScheduleTaskOnMainThread(
      FROM_HERE,
      base::BindOnce(&OutOfProcessInstance::ResetRecentlySentFindUpdate,
                     weak_factory_.GetWeakPtr()),
      /*result=*/0, kFindResultCooldown);
}

void OutOfProcessInstance::NotifySelectedFindResultChanged(
    int current_find_index) {
  DCHECK_GE(current_find_index, -1);
  SelectedFindResultChanged(current_find_index);
}

void OutOfProcessInstance::CaretChanged(const gfx::Rect& caret_rect) {
  PP_Rect caret_viewport =
      PPRectFromRect(caret_rect + available_area().OffsetFromOrigin());
  text_input_->UpdateCaretPosition(caret_viewport, caret_viewport);
}

void OutOfProcessInstance::Alert(const std::string& message) {
  pp::PDF::ShowAlertDialog(this, message.c_str());
}

bool OutOfProcessInstance::Confirm(const std::string& message) {
  return pp::PDF::ShowConfirmDialog(this, message.c_str());
}

std::string OutOfProcessInstance::Prompt(const std::string& question,
                                         const std::string& default_answer) {
  pp::Var result =
      pp::PDF::ShowPromptDialog(this, question.c_str(), default_answer.c_str());
  return result.is_string() ? result.AsString() : std::string();
}

void OutOfProcessInstance::SubmitForm(const std::string& url,
                                      const void* data,
                                      int length) {
  UrlRequest request;
  request.url = url;
  request.method = "POST";
  request.body.assign(static_cast<const char*>(data), length);

  form_loader_ = CreateUrlLoaderInternal();
  form_loader_->Open(request, base::BindOnce(&OutOfProcessInstance::FormDidOpen,
                                             weak_factory_.GetWeakPtr()));
}

void OutOfProcessInstance::FormDidOpen(int32_t result) {
  // TODO(crbug.com/719344): Process response.
  LOG_IF(ERROR, result != PP_OK) << "FormDidOpen failed: " << result;
}

std::vector<PDFEngine::Client::SearchStringResult>
OutOfProcessInstance::SearchString(const char16_t* string,
                                   const char16_t* term,
                                   bool case_sensitive) {
  PP_PrivateFindResult* pp_results;
  uint32_t count = 0;
  pp::PDF::SearchString(this, reinterpret_cast<const unsigned short*>(string),
                        reinterpret_cast<const unsigned short*>(term),
                        case_sensitive, &pp_results, &count);

  std::vector<SearchStringResult> results(count);
  for (uint32_t i = 0; i < count; ++i) {
    results[i].start_index = pp_results[i].start_index;
    results[i].length = pp_results[i].length;
  }

  pp::Memory_Dev memory;
  memory.MemFree(pp_results);

  return results;
}

void OutOfProcessInstance::RotateClockwise() {
  engine()->RotateClockwise();
}

void OutOfProcessInstance::RotateCounterclockwise() {
  engine()->RotateCounterclockwise();
}

void OutOfProcessInstance::SetLastPluginInstance() {
#if defined(OS_LINUX) || defined(OS_CHROMEOS)
  SetLastPepperInstance(this);
#endif
}

void OutOfProcessInstance::ResetRecentlySentFindUpdate(int32_t /* unused */) {
  recently_sent_find_update_ = false;
}

Image OutOfProcessInstance::GetPluginImageData() const {
  return Image(pepper_image_data_);
}

void OutOfProcessInstance::SetAccessibilityDocInfo(
    const AccessibilityDocInfo& doc_info) {
  PP_PrivateAccessibilityDocInfo pp_doc_info = {
      doc_info.page_count, PP_FromBool(doc_info.text_accessible),
      PP_FromBool(doc_info.text_copyable)};
  pp::PDF::SetAccessibilityDocInfo(this, &pp_doc_info);
}

void OutOfProcessInstance::SetAccessibilityPageInfo(
    AccessibilityPageInfo page_info,
    std::vector<AccessibilityTextRunInfo> text_runs,
    std::vector<AccessibilityCharInfo> chars,
    AccessibilityPageObjects page_objects) {
  PP_PrivateAccessibilityPageInfo pp_page_info =
      ToPrivateAccessibilityPageInfo(page_info);
  std::vector<PP_PrivateAccessibilityCharInfo> pp_chars =
      ToPrivateAccessibilityCharInfo(chars);
  std::vector<pp::PDF::PrivateAccessibilityTextRunInfo> pp_text_runs =
      ToPrivateAccessibilityCharInfo(text_runs);
  pp::PDF::PrivateAccessibilityPageObjects pp_page_objects =
      ToPrivateAccessibilityPageObjects(page_objects);
  pp::PDF::SetAccessibilityPageInfo(this, &pp_page_info, pp_text_runs, pp_chars,
                                    pp_page_objects);
}

void OutOfProcessInstance::SetAccessibilityViewportInfo(
    const AccessibilityViewportInfo& viewport_info) {
  PP_PrivateAccessibilityViewportInfo pp_viewport_info = {
      viewport_info.zoom,
      viewport_info.scale,
      pp::Point(viewport_info.scroll.x(), viewport_info.scroll.y()),
      pp::Point(viewport_info.offset.x(), viewport_info.offset.y()),
      viewport_info.selection_start_page_index,
      viewport_info.selection_start_char_index,
      viewport_info.selection_end_page_index,
      viewport_info.selection_end_char_index,
      {static_cast<PP_PrivateFocusObjectType>(
           viewport_info.focus_info.focused_object_type),
       viewport_info.focus_info.focused_object_page_index,
       viewport_info.focus_info.focused_annotation_index_in_page}};
  pp::PDF::SetAccessibilityViewportInfo(this, &pp_viewport_info);
}

void OutOfProcessInstance::SetPluginCanSave(bool can_save) {
  pp::PDF::SetPluginCanSave(this, can_save);
}

base::WeakPtr<PdfViewPluginBase> OutOfProcessInstance::GetWeakPtr() {
  return weak_factory_.GetWeakPtr();
}

std::unique_ptr<UrlLoader> OutOfProcessInstance::CreateUrlLoaderInternal() {
  auto loader = std::make_unique<PepperUrlLoader>(this);
  loader->GrantUniversalAccess();
  return loader;
}

void OutOfProcessInstance::SetSelectedText(const std::string& selected_text) {
  pp::PDF::SetSelectedText(this, selected_text.c_str());
}

bool OutOfProcessInstance::IsValidLink(const std::string& url) {
  return pp::Var(url).is_string();
}

std::unique_ptr<Graphics> OutOfProcessInstance::CreatePaintGraphics(
    const gfx::Size& size) {
  auto graphics = std::make_unique<PepperGraphics>(this, size);
  DCHECK(!graphics->pepper_graphics().is_null());
  return graphics;
}

bool OutOfProcessInstance::BindPaintGraphics(Graphics& graphics) {
  return BindGraphics(static_cast<PepperGraphics&>(graphics).pepper_graphics());
}

void OutOfProcessInstance::ScheduleTaskOnMainThread(
    const base::Location& from_here,
    ResultCallback callback,
    int32_t result,
    base::TimeDelta delay) {
  int64_t delay_in_msec = delay.InMilliseconds();
  DCHECK_LE(delay_in_msec, INT32_MAX);
  pp::Module::Get()->core()->CallOnMainThread(
      static_cast<int32_t>(delay_in_msec),
      PPCompletionCallbackFromResultCallback(std::move(callback)), result);
}

void OutOfProcessInstance::PluginDidStartLoading() {
  pp::PDF::DidStartLoading(this);
}

void OutOfProcessInstance::PluginDidStopLoading() {
  pp::PDF::DidStopLoading(this);
}

void OutOfProcessInstance::InvokePrintDialog() {
  pp::PDF::Print(this);
}

void OutOfProcessInstance::SetContentRestrictions(int content_restrictions) {
  pp::PDF::SetContentRestriction(this, content_restrictions);
}

void OutOfProcessInstance::NotifyLinkUnderCursor() {
  pp::PDF::SetLinkUnderCursor(this, link_under_cursor().c_str());
}

void OutOfProcessInstance::NotifySelectionChanged(const gfx::PointF& left,
                                                  int left_height,
                                                  const gfx::PointF& right,
                                                  int right_height) {
  pp::PDF::SelectionChanged(this, PPFloatPointFromPointF(left), left_height,
                            PPFloatPointFromPointF(right), right_height);
}

void OutOfProcessInstance::NotifyUnsupportedFeature() {
  DCHECK(full_frame());
  pp::PDF::HasUnsupportedFeature(this);
}

void OutOfProcessInstance::UserMetricsRecordAction(const std::string& action) {
  // TODO(raymes): Move this function to PPB_UMA_Private.
  pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
}

}  // namespace chrome_pdf