pdf/pdf_view_web_plugin.h

// Copyright 2020 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.

#ifndef PDF_PDF_VIEW_WEB_PLUGIN_H_
#define PDF_PDF_VIEW_WEB_PLUGIN_H_

#include "pdf/pdf_view_plugin_base.h"
#include "third_party/blink/public/web/web_plugin.h"

namespace blink {
class WebPluginContainer;
struct WebPluginParams;
}  // namespace blink

namespace chrome_pdf {

// Skeleton for a `blink::WebPlugin` to replace `OutOfProcessInstance`.
class PdfViewWebPlugin final : public PdfViewPluginBase,
                               public blink::WebPlugin {
 public:
  explicit PdfViewWebPlugin(const blink::WebPluginParams& params);
  PdfViewWebPlugin(const PdfViewWebPlugin& other) = delete;
  PdfViewWebPlugin& operator=(const PdfViewWebPlugin& other) = delete;

  // blink::WebPlugin:
  bool Initialize(blink::WebPluginContainer* container) override;
  void Destroy() override;
  blink::WebPluginContainer* Container() const override;
  void UpdateAllLifecyclePhases(blink::DocumentUpdateReason reason) override;
  void Paint(cc::PaintCanvas* canvas, const blink::WebRect& rect) override;
  void UpdateGeometry(const blink::WebRect& window_rect,
                      const blink::WebRect& clip_rect,
                      const blink::WebRect& unobscured_rect,
                      bool is_visible) override;
  void UpdateFocus(bool focused, blink::mojom::FocusType focus_type) override;
  void UpdateVisibility(bool visibility) override;
  blink::WebInputEventResult HandleInputEvent(
      const blink::WebCoalescedInputEvent& event,
      ui::Cursor* cursor) override;
  void DidReceiveResponse(const blink::WebURLResponse& response) override;
  void DidReceiveData(const char* data, size_t data_length) override;
  void DidFinishLoading() override;
  void DidFailLoading(const blink::WebURLError& error) override;

  // PdfViewPluginBase:
  void ProposeDocumentLayout(const DocumentLayout& layout) override;
  void Invalidate(const pp::Rect& rect) override;
  void DidScroll(const gfx::Vector2d& offset) override;
  void ScrollToX(int x_in_screen_coords) override;
  void ScrollToY(int y_in_screen_coords, bool compensate_for_toolbar) override;
  void ScrollBy(const gfx::Vector2d& scroll_delta) override;
  void ScrollToPage(int page) override;
  void NavigateTo(const std::string& url,
                  WindowOpenDisposition disposition) override;
  void NavigateToDestination(int page,
                             const float* x,
                             const float* y,
                             const float* zoom) override;
  void UpdateCursor(PP_CursorType_Dev cursor) override;
  void UpdateTickMarks(const std::vector<pp::Rect>& tickmarks) override;
  void NotifyNumberOfFindResultsChanged(int total, bool final_result) override;
  void NotifySelectedFindResultChanged(int current_find_index) override;
  void NotifyTouchSelectionOccurred() override;
  void GetDocumentPassword(
      base::OnceCallback<void(const std::string&)> callback) override;
  void Beep() override;
  void Alert(const std::string& message) override;
  bool Confirm(const std::string& message) override;
  std::string Prompt(const std::string& question,
                     const std::string& default_answer) override;
  std::string GetURL() override;
  void Email(const std::string& to,
             const std::string& cc,
             const std::string& bcc,
             const std::string& subject,
             const std::string& body) override;
  void Print() override;
  void SubmitForm(const std::string& url,
                  const void* data,
                  int length) override;
  pp::URLLoader CreateURLLoader() override;
  std::vector<SearchStringResult> SearchString(const base::char16* string,
                                               const base::char16* term,
                                               bool case_sensitive) override;
  void DocumentLoadComplete(
      const PDFEngine::DocumentFeatures& document_features) override;
  void DocumentLoadFailed() override;
  pp::Instance* GetPluginInstance() override;
  void DocumentHasUnsupportedFeature(const std::string& feature) override;
  void DocumentLoadProgress(uint32_t available, uint32_t doc_size) override;
  void FormTextFieldFocusChange(bool in_focus) override;
  bool IsPrintPreview() override;
  uint32_t GetBackgroundColor() override;
  void IsSelectingChanged(bool is_selecting) override;
  void SelectionChanged(const pp::Rect& left, const pp::Rect& right) override;
  void EnteredEditMode() override;
  float GetToolbarHeightInScreenCoords() override;
  void DocumentFocusChanged(bool document_has_focus) override;

 private:
  // Call `Destroy()` instead.
  ~PdfViewWebPlugin() override;

  blink::WebPluginContainer* container_ = nullptr;
};

}  // namespace chrome_pdf

#endif  // PDF_PDF_VIEW_WEB_PLUGIN_H_