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

content/common/accessibility_messages.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.
 
 // IPC messages for accessibility.
 // Multiply-included message file, hence no include guard.
 
 #include "content/common/ax_content_node_data.h"
 #include "content/common/content_export.h"
 #include "content/common/view_message_enums.h"
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_message_utils.h"
 #include "ipc/ipc_param_traits.h"
 #include "ipc/param_traits_macros.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_relative_bounds.h"
 #include "ui/accessibility/ax_tree_update.h"
 #include "ui/gfx/transform.h"
 
 #undef IPC_MESSAGE_EXPORT
 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
 
 #define IPC_MESSAGE_START AccessibilityMsgStart
 
 IPC_ENUM_TRAITS_MAX_VALUE(content::AXContentIntAttribute,
                           content::AX_CONTENT_INT_ATTRIBUTE_LAST)
+IPC_ENUM_TRAITS_MAX_VALUE(ui::AXAction, ui::AX_ACTION_LAST)
+
+IPC_STRUCT_TRAITS_BEGIN(ui::AXActionData)
+  IPC_STRUCT_TRAITS_MEMBER(action)
+  IPC_STRUCT_TRAITS_MEMBER(target_node_id)
+  IPC_STRUCT_TRAITS_MEMBER(flags)
+  IPC_STRUCT_TRAITS_MEMBER(anchor_node_id)
+  IPC_STRUCT_TRAITS_MEMBER(anchor_offset)
+  IPC_STRUCT_TRAITS_MEMBER(focus_node_id)
+  IPC_STRUCT_TRAITS_MEMBER(focus_offset)
+  IPC_STRUCT_TRAITS_MEMBER(target_rect)
+  IPC_STRUCT_TRAITS_MEMBER(target_point)
+  IPC_STRUCT_TRAITS_MEMBER(value)
+IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_TRAITS_BEGIN(content::AXContentNodeData)
   IPC_STRUCT_TRAITS_MEMBER(id)
   IPC_STRUCT_TRAITS_MEMBER(role)
   IPC_STRUCT_TRAITS_MEMBER(state)
   IPC_STRUCT_TRAITS_MEMBER(location)
   IPC_STRUCT_TRAITS_MEMBER(transform)
   IPC_STRUCT_TRAITS_MEMBER(string_attributes)
   IPC_STRUCT_TRAITS_MEMBER(int_attributes)
   IPC_STRUCT_TRAITS_MEMBER(float_attributes)
@@ skipping 71 matching lines @@
 
   // The id of the accessibility object for the end of the match range.
   IPC_STRUCT_MEMBER(int, end_id)
 
   // The character offset into the text of the end object.
   IPC_STRUCT_MEMBER(int, end_offset)
 IPC_STRUCT_END()
 
 // Messages sent from the browser to the renderer.
 
-// Relay a request from assistive technology to set focus to a given node.
-IPC_MESSAGE_ROUTED1(AccessibilityMsg_SetFocus,
-                    int /* object id */)
-
-// Relay a request from assistive technology to perform the default action
-// on a given node.
-IPC_MESSAGE_ROUTED1(AccessibilityMsg_DoDefaultAction,
-                    int /* object id */)
-
-// Relay a request from assistive technology to make a given object
-// visible by scrolling as many scrollable containers as possible.
-// 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.
-IPC_MESSAGE_ROUTED2(AccessibilityMsg_ScrollToMakeVisible,
-                    int /* object id */,
-                    gfx::Rect /* subfocus */)
-
-// Relay a request from assistive technology to show the context menu for a
-// given object.
-IPC_MESSAGE_ROUTED1(AccessibilityMsg_ShowContextMenu, int /* object id */)
-
-// Relay a request from assistive technology to move a given object
-// to a specific location, in the WebContents area coordinate space, i.e.
-// (0, 0) is the top-left corner of the WebContents.
-IPC_MESSAGE_ROUTED2(AccessibilityMsg_ScrollToPoint,
-                    int /* object id */,
-                    gfx::Point /* new location */)
-
-// Relay a request from assistive technology to set the scroll offset
-// of an accessibility object that's a scroll container, to a specific
-// offset.
-IPC_MESSAGE_ROUTED2(AccessibilityMsg_SetScrollOffset,
-                    int /* object id */,
-                    gfx::Point /* new offset */)
-
-// Relay a request from assistive technology to set the cursor or
-// selection within a document.
-IPC_MESSAGE_ROUTED4(AccessibilityMsg_SetSelection,
-                    int /* New anchor object id */,
-                    int /* New anchor offset */,
-                    int /* New focus object id */,
-                    int /* New focus offset */)
-
-// Relay a request from assistive technology to set the value of an
-// editable text element.
-IPC_MESSAGE_ROUTED2(AccessibilityMsg_SetValue,
-                    int /* object id */,
-                    base::string16 /* Value */)
+// Relay a request from assistive technology to perform an action,
+// such as focusing or clicking on a node.
+IPC_MESSAGE_ROUTED1(AccessibilityMsg_PerformAction,
+                    ui::AXActionData  /* action parameters */)
 
 // Determine the accessibility object under a given point.
 //
 // If the target is an object with a child frame (like if the hit test
 // result is an iframe element), it responds with
 // AccessibilityHostMsg_ChildFrameHitTestResult so that the
 // hit test can be performed recursively on the child frame. Otherwise
 // it fires an accessibility event of type ui::AX_EVENT_HOVER on the target.
 IPC_MESSAGE_ROUTED1(AccessibilityMsg_HitTest,
                     gfx::Point /* location to test */)
@@ skipping 60 matching lines @@
 IPC_MESSAGE_ROUTED2(AccessibilityHostMsg_ChildFrameHitTestResult,
                     gfx::Point /* location tested */,
                     int /* node id of result */)
 
 // Sent in response to AccessibilityMsg_SnapshotTree. The callback id that was
 // passed to the request will be returned in |callback_id|, along with
 // a standalone snapshot of the accessibility tree.
 IPC_MESSAGE_ROUTED2(AccessibilityHostMsg_SnapshotResponse,
                     int /* callback_id */,
                     content::AXContentTreeUpdate)