Move renderer accessibility to subdir and add OWNERS

content/renderer/renderer_accessibility_complete.h

-// 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.
-
-#ifndef CONTENT_RENDERER_RENDERER_ACCESSIBILITY_COMPLETE_H_
-#define CONTENT_RENDERER_RENDERER_ACCESSIBILITY_COMPLETE_H_
-
-#include <vector>
-
-#include "base/hash_tables.h"
-#include "base/memory/weak_ptr.h"
-#include "content/common/accessibility_node_data.h"
-#include "content/public/renderer/render_view_observer.h"
-#include "content/renderer/renderer_accessibility.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebAccessibilityNotification.h"
-
-namespace WebKit {
-class WebAccessibilityObject;
-class WebDocument;
-class WebNode;
-};
-
-namespace content {
-class RenderViewImpl;
-
-// This is the subclass of RendererAccessibility that implements
-// complete accessibility support for assistive technology (as opposed to
-// partial support - see RendererAccessibilityFocusOnly).
-//
-// This version turns on WebKit's accessibility code and sends
-// a serialized representation of that tree whenever it changes. It also
-// handles requests from the browser to perform accessibility actions on
-// nodes in the tree (e.g., change focus, or click on a button).
-class RendererAccessibilityComplete : public RendererAccessibility {
- public:
-  explicit RendererAccessibilityComplete(RenderViewImpl* render_view);
-  virtual ~RendererAccessibilityComplete();
-
-  // RenderView::Observer implementation.
-  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
-  virtual void FocusedNodeChanged(const WebKit::WebNode& node) OVERRIDE;
-  virtual void DidFinishLoad(WebKit::WebFrame* frame) OVERRIDE;
-
-  // RendererAccessibility.
-  virtual void HandleWebAccessibilityNotification(
-      const WebKit::WebAccessibilityObject& obj,
-      WebKit::WebAccessibilityNotification notification) OVERRIDE;
-
- private:
-  // Handle an accessibility notification to be sent to the browser process.
-  void HandleAccessibilityNotification(
-      const WebKit::WebAccessibilityObject& obj,
-      AccessibilityNotification notification);
-
-  // In order to keep track of what nodes the browser knows about, we keep a
-  // representation of the browser tree - just IDs and parent/child
-  // relationships.
-  struct BrowserTreeNode {
-    BrowserTreeNode();
-    ~BrowserTreeNode();
-    int32 id;
-    std::vector<BrowserTreeNode*> children;
-  };
-
-  // Send queued notifications from the renderer to the browser.
-  void SendPendingAccessibilityNotifications();
-
-  // Update our representation of what nodes the browser has, given a
-  // tree of nodes.
-  void UpdateBrowserTree(const AccessibilityNodeData& renderer_node);
-
-  // Clear the given node and recursively delete all of its descendants
-  // from the browser tree. (Does not delete |browser_node|).
-  void ClearBrowserTreeNode(BrowserTreeNode* browser_node);
-
-  // Handlers for messages from the browser to the renderer.
-  void OnDoDefaultAction(int acc_obj_id);
-  void OnNotificationsAck();
-  void OnChangeScrollPosition(int acc_obj_id, int scroll_x, int scroll_y);
-  void OnScrollToMakeVisible(int acc_obj_id, gfx::Rect subfocus);
-  void OnScrollToPoint(int acc_obj_id, gfx::Point point);
-  void OnSetFocus(int acc_obj_id);
-
-  void OnSetTextSelection(int acc_obj_id, int start_offset, int end_offset);
-
-  // Whether or not this notification typically needs to send
-  // updates to its children, too.
-  bool ShouldIncludeChildren(
-      const AccessibilityHostMsg_NotificationParams& notification);
-
-  // Checks if a WebKit accessibility object is an editable text node.
-  bool IsEditableText(const WebKit::WebAccessibilityObject& node);
-
-  // Recursively explore the tree of WebKit accessibility objects rooted
-  // at |src|, and for each editable text node encountered, add a
-  // corresponding WebAccessibility node as a child of |dst|.
-  void RecursiveAddEditableTextNodesToTree(
-      const WebKit::WebAccessibilityObject& src,
-      AccessibilityNodeData* dst);
-
-  // Build a tree of serializable AccessibilityNodeData nodes to send to the
-  // browser process, given a WebAccessibilityObject node from WebKit.
-  // Modifies |dst| in-place, it's assumed to be empty.
-  void BuildAccessibilityTree(const WebKit::WebAccessibilityObject& src,
-                              bool include_children,
-                              AccessibilityNodeData* dst);
-
-  // So we can queue up tasks to be executed later.
-  base::WeakPtrFactory<RendererAccessibilityComplete> weak_factory_;
-
-  // Notifications from WebKit are collected until they are ready to be
-  // sent to the browser.
-  std::vector<AccessibilityHostMsg_NotificationParams> pending_notifications_;
-
-  // Our representation of the browser tree.
-  BrowserTreeNode* browser_root_;
-
-  // A map from IDs to nodes in the browser tree.
-  base::hash_map<int32, BrowserTreeNode*> browser_id_map_;
-
-  // The most recently observed scroll offset of the root document element.
-  // TODO(dmazzoni): remove once https://bugs.webkit.org/show_bug.cgi?id=73460
-  // is fixed.
-  gfx::Size last_scroll_offset_;
-
-  // The current accessibility mode.
-  AccessibilityMode mode_;
-
-  // Set if we are waiting for an accessibility notification ack.
-  bool ack_pending_;
-
-  // True if verbose logging of accessibility events is on.
-  bool logging_;
-
-  DISALLOW_COPY_AND_ASSIGN(RendererAccessibilityComplete);
-};
-
-#endif  // CONTENT_RENDERER_RENDERER_ACCESSIBILITY_COMPLETE_H_
-
-}  // namespace content