Introduce WebViewGuestDelegate.

chrome/browser/guest_view/web_view/chrome_web_view_guest_delegate.h

+// Copyright 2014 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 CHROME_BROWSER_GUEST_VIEW_WEB_VIEW_CHROME_WEB_VIEW_GUEST_DELEGATE_H_
+#define CHROME_BROWSER_GUEST_VIEW_WEB_VIEW_CHROME_WEB_VIEW_GUEST_DELEGATE_H_
+
+#include "chrome/browser/guest_view/web_view/web_view_guest.h"
+#include "extensions/browser/guest_view/web_view/web_view_guest_delegate.h"
+
+#if defined(OS_CHROMEOS)
+#include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
+#endif
+
+class RenderViewContextMenu;
+
+namespace ui {
+class SimpleMenuModel;
+}  // namespace ui
+
+class ChromeWebViewGuestDelegate : public extensions::WebViewGuestDelegate {
+ public :
+  explicit ChromeWebViewGuestDelegate(
+      extensions::WebViewGuest* web_view_guest);
+  virtual ~ChromeWebViewGuestDelegate();
+
+  // WebViewGuestDelegate implementation.
+  virtual double GetZoom() OVERRIDE;
+  virtual void InjectChromeVoxIfNeeded(
+      content::RenderViewHost* render_view_host) OVERRIDE;
+  virtual void OnAttachWebViewHelpers(content::WebContents* contents) OVERRIDE;
+  virtual void OnDidCommitProvisionalLoadForFrame(bool is_main_frame) OVERRIDE;
+  virtual void OnDidInitialize() OVERRIDE;
+  virtual void OnGuestDestroyed() OVERRIDE;
+  virtual extensions::GuestViewBase::Event* OnHandleContextMenu(
+      const content::ContextMenuParams& params) OVERRIDE;
+  virtual extensions::GuestViewBase::Event* OnSetZoom(
+      double zoom_factor,
+      const std::string& old_zoom_factor,
+      const std::string& new_zoom_factor,
+      const std::string& event_zoom_change) OVERRIDE;
+  virtual void OnShowContextMenu(
+      int request_id,
+      const MenuItemVector* items) OVERRIDE;
+  virtual void SetCurrentZoomFactor(double zoom_factor) OVERRIDE;
+
+ private:
+  content::WebContents* guest_web_contents() const {
+    return web_view_guest_->guest_web_contents();
+  }
+
+  // Returns the top level items (ignoring submenus) as Value.
+  static scoped_ptr<base::ListValue> MenuModelToValue(
+      const ui::SimpleMenuModel& menu_model);
+
+#if defined(OS_CHROMEOS)
+  // Notification of a change in the state of an accessibility setting.
+  void OnAccessibilityStatusChanged(
+      const chromeos::AccessibilityStatusEventDetails& details);
+#endif
+
+  // A counter to generate a unique request id for a context menu request.
+  // We only need the ids to be unique for a given WebViewGuest.
+  int pending_context_menu_request_id_;
+
+  // Set to |true| if ChromeVox was already injected in main frame.
+  bool chromevox_injected_;
+
+  // Stores the current zoom factor.
+  double current_zoom_factor_;
+
+  // Holds the RenderViewContextMenu that has been built but yet to be
+  // shown. This is .Reset() after ShowContextMenu().
+  scoped_ptr<RenderViewContextMenu> pending_menu_;
+
+  extensions::WebViewGuest* web_view_guest_;
+
+#if defined(OS_CHROMEOS)
+  // Subscription to receive notifications on changes to a11y settings.
+  scoped_ptr<chromeos::AccessibilityStatusSubscription>
+      accessibility_subscription_;
+#endif
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeWebViewGuestDelegate);
+};
+
+#endif  // CHROME_BROWSER_GUEST_VIEW_WEB_VIEW_CHROME_WEB_VIEW_GUEST_DELEGATE_H_
+