Re-land: Create AXAction and AXActionData as a way to simplify accessibility actions

content/browser/accessibility/browser_accessibility_manager.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_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/containers/hash_tables.h"
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "content/browser/accessibility/ax_tree_id_registry.h"
 #include "content/browser/accessibility/browser_accessibility_event.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/ax_event_notification_details.h"
 #include "third_party/WebKit/public/web/WebAXEnums.h"
+#include "ui/accessibility/ax_action_data.h"
 #include "ui/accessibility/ax_node_data.h"
 #include "ui/accessibility/ax_serializable_tree.h"
 #include "ui/accessibility/ax_tree_update.h"
 #include "ui/gfx/native_widget_types.h"
 
 struct AccessibilityHostMsg_LocationChangeParams;
 
 namespace content {
 class BrowserAccessibility;
 class BrowserAccessibilityManager;
@@ skipping 25 matching lines @@
 // Class that can perform actions on behalf of the BrowserAccessibilityManager.
 // Note: BrowserAccessibilityManager should never cache any of the return
 // values from any of these interfaces, especially those that return pointers.
 // They may only be valid within this call stack. That policy eliminates any
 // concerns about ownership and lifecycle issues; none of these interfaces
 // transfer ownership and no return values are guaranteed to be valid outside
 // of the current call stack.
 class CONTENT_EXPORT BrowserAccessibilityDelegate {
  public:
   virtual ~BrowserAccessibilityDelegate() {}
-  virtual void AccessibilitySetFocus(int acc_obj_id) = 0;
-  virtual void AccessibilityDoDefaultAction(int acc_obj_id) = 0;
-  virtual void AccessibilityShowContextMenu(int acc_obj_id) = 0;
-  virtual void AccessibilityScrollToMakeVisible(
-      int acc_obj_id, const gfx::Rect& subfocus) = 0;
-  virtual void AccessibilityScrollToPoint(
-      int acc_obj_id, const gfx::Point& point) = 0;
-  virtual void AccessibilitySetScrollOffset(
-      int acc_obj_id, const gfx::Point& offset) = 0;
-  virtual void AccessibilitySetSelection(int anchor_obj_id,
-                                         int anchor_offset,
-                                         int focus_obj_id,
-                                         int focus_offset) = 0;
-  virtual void AccessibilitySetValue(
-      int acc_obj_id, const base::string16& value) = 0;
+
+  virtual void AccessibilityPerformAction(const ui::AXActionData& data) = 0;
   virtual bool AccessibilityViewHasFocus() const = 0;
   virtual gfx::Rect AccessibilityGetViewBounds() const = 0;
   virtual gfx::Point AccessibilityOriginInScreen(
       const gfx::Rect& bounds) const = 0;
-  virtual void AccessibilityHitTest(
-      const gfx::Point& point) = 0;
-  virtual void AccessibilitySetAccessibilityFocus(int acc_obj_id) = 0;
   virtual void AccessibilityFatalError() = 0;
   virtual gfx::AcceleratedWidget AccessibilityGetAcceleratedWidget() = 0;
   virtual gfx::NativeViewAccessible AccessibilityGetNativeViewAccessible() = 0;
 };
 
 class CONTENT_EXPORT BrowserAccessibilityFactory {
  public:
   virtual ~BrowserAccessibilityFactory() {}
 
   // Create an instance of BrowserAccessibility and return a new
@@ skipping 95 matching lines @@
   // communicate with the renderer and doesn't fire any events.
   void SetFocusLocallyForTesting(BrowserAccessibility* node);
 
   // For testing only, register a function to be called when focus changes
   // in any BrowserAccessibilityManager.
   static void SetFocusChangeCallbackForTesting(const base::Closure& callback);
 
   // Tell the renderer to do the default action for this node.
   void DoDefaultAction(const BrowserAccessibility& node);
 
+  // Tell the renderer to show the context menu for a given node.
+  void ShowContextMenu(const BrowserAccessibility& node);
+
   // Tell the renderer to scroll to make |node| visible.
   // In addition, if it's not possible to make the entire object visible,
   // scroll so that the |subfocus| rect is visible at least. The subfocus
   // rect is in local coordinates of the object itself.
   void ScrollToMakeVisible(
       const BrowserAccessibility& node, gfx::Rect subfocus);
 
   // Tell the renderer to scroll such that |node| is at |point|,
   // where |point| is in global coordinates of the WebContents.
   void ScrollToPoint(
       const BrowserAccessibility& node, gfx::Point point);
 
   // If |node| is itself a scrollable container, set its scroll
   // offset to |offset|.
   void SetScrollOffset(const BrowserAccessibility& node, gfx::Point offset);
 
   // Tell the renderer to set the value of an editable text node.
   void SetValue(
       const BrowserAccessibility& node, const base::string16& value);
 
   // Tell the renderer to set the text selection on a node.
   void SetTextSelection(
       const BrowserAccessibility& node, int start_offset, int end_offset);
 
+  // Tell the renderer to set accessibility focus to this node.
+  void SetAccessibilityFocus(const BrowserAccessibility& node);
+
+  // Tell the renderer to do a hit test on a point in global screen coordinates
+  // and fire a HOVER event on the node that's hit.
+  void HitTest(const gfx::Point& point);
+
   // Retrieve the bounds of the parent View in screen coordinates.
   gfx::Rect GetViewBounds();
 
   // Fire an event telling native assistive technology to move focus to the
   // given find in page result.
   void ActivateFindInPageResult(int request_id, int match_index);
 
   // Called when the renderer process has notified us of about tree changes.
   virtual void OnAccessibilityEvents(
       const std::vector<AXEventNotificationDetails>& details);
@@ skipping 245 matching lines @@
   // node within that parent tree. It's computed as needed and cached for
   // speed so that it can be accessed quickly if it hasn't changed.
   int parent_node_id_from_parent_tree_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_H_