Add an accessibility mode for editable text fields only.

content/browser/renderer_host/render_widget_host_impl.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_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 #pragma once
 
 #include <deque>
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/process_util.h"
 #include "base/property_bag.h"
 #include "base/string16.h"
 #include "base/timer.h"
 #include "build/build_config.h"
+#include "content/common/view_message_enums.h"
 #include "content/public/browser/render_widget_host.h"
 #include "content/public/common/page_zoom.h"
 #include "ui/base/ime/text_input_type.h"
 #include "ui/gfx/native_widget_types.h"
 
 class BackingStore;
 class MockRenderWidgetHost;
 class WebCursor;
 struct EditCommand;
 struct ViewHostMsg_UpdateRect_Params;
@@ skipping 50 matching lines @@
                                     const gfx::Size& accelerated_dest_size,
                                     skia::PlatformCanvas* output) OVERRIDE;
 #if defined(TOOLKIT_GTK)
   virtual bool CopyFromBackingStoreToGtkWindow(const gfx::Rect& dest_rect,
                                                GdkWindow* target) OVERRIDE;
 #elif defined(OS_MACOSX)
   virtual gfx::Size GetBackingStoreSize() OVERRIDE;
   virtual bool CopyFromBackingStoreToCGContext(const CGRect& dest_rect,
                                                CGContextRef target) OVERRIDE;
 #endif
-  virtual void EnableRendererAccessibility() OVERRIDE;
+  virtual void EnableFullAccessibilityMode() OVERRIDE;
   virtual void ForwardMouseEvent(
       const WebKit::WebMouseEvent& mouse_event) OVERRIDE;
   virtual void ForwardWheelEvent(
       const WebKit::WebMouseWheelEvent& wheel_event) OVERRIDE;
   virtual void ForwardKeyboardEvent(
       const NativeWebKeyboardEvent& key_event) OVERRIDE;
   virtual const gfx::Point& GetLastScrollOffset() const OVERRIDE;
   virtual RenderProcessHost* GetProcess() const OVERRIDE;
   virtual int GetRoutingID() const OVERRIDE;
   virtual RenderWidgetHostView* GetView() const OVERRIDE;
   virtual bool IsRenderView() const OVERRIDE;
   virtual void PaintAtSize(TransportDIB::Handle dib_handle,
                            int tag,
                            const gfx::Size& page_size,
                            const gfx::Size& desired_size) OVERRIDE;
   virtual void Replace(const string16& word) OVERRIDE;
   virtual void ResizeRectChanged(const gfx::Rect& new_rect) OVERRIDE;
   virtual void RestartHangMonitorTimeout() OVERRIDE;
   virtual void SetIgnoreInputEvents(bool ignore_input_events) OVERRIDE;
   virtual void Stop() OVERRIDE;
   virtual void WasResized() OVERRIDE;
   virtual void AddKeyboardListener(KeyboardListener* listener) OVERRIDE;
   virtual void RemoveKeyboardListener(KeyboardListener* listener) OVERRIDE;
 
   // Sets the View of this RenderWidgetHost.
   void SetView(RenderWidgetHostView* view);
 
   int surface_id() const { return surface_id_; }
-  bool renderer_accessible() { return renderer_accessible_; }
 
   bool empty() const { return current_size_.IsEmpty(); }
 
   // Returns the property bag for this widget, where callers can add extra data
   // they may wish to associate with it. Returns a pointer rather than a
   // reference since the PropertyAccessors expect this.
   const base::PropertyBag* property_bag() const { return &property_bag_; }
   base::PropertyBag* property_bag() { return &property_bag_; }
 
   // Called when a renderer object already been created for this host, and we
@@ skipping 154 matching lines @@
   void StartUserGesture();
 
   // Set the RenderView background.
   void SetBackground(const SkBitmap& background);
 
   // Notifies the renderer that the next key event is bound to one or more
   // pre-defined edit commands
   void SetEditCommandsForNextKeyEvent(
       const std::vector<EditCommand>& commands);
 
+  // Send a message to the renderer process to change the accessibility mode.
+  void SetAccessibilityMode(AccessibilityMode mode);
+
   // Relay a request from assistive technology to perform the default action
   // on a given node.
   void AccessibilityDoDefaultAction(int object_id);
 
   // Relay a request from assistive technology to set focus to a given node.
   void AccessibilitySetFocus(int object_id);
 
   // Relay a request from assistive technology to make a given object
   // visible by scrolling as many scrollable containers as necessary.
   // In addition, if it's not possible to make the entire object visible,
@@ skipping 232 matching lines @@
   void DelayedAutoResized();
 
   // Created during construction but initialized during Init*(). Therefore, it
   // is guaranteed never to be NULL, but its channel may be NULL if the
   // renderer crashed, so you must always check that.
   RenderProcessHost* process_;
 
   // The ID of the corresponding object in the Renderer Instance.
   int routing_id_;
 
-  // True if renderer accessibility is enabled. This should only be set when a
-  // screenreader is detected as it can potentially slow down Chrome.
-  bool renderer_accessible_;
-
   // Stores random bits of data for others to associate with this object.
   base::PropertyBag property_bag_;
 
   // The ID of the surface corresponding to this render widget.
   int surface_id_;
 
   // Indicates whether a page is loading or not.
   bool is_loading_;
 
   // Indicates whether a page is hidden or not.
@@ skipping 138 matching lines @@
   base::WeakPtrFactory<RenderWidgetHostImpl> weak_factory_;
 
   scoped_ptr<TapSuppressionController> tap_suppression_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_