ui/accessibility/mojom/ax_assistant_structure.mojom

// Copyright 2018 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.

module ax.mojom;

import "mojo/public/mojom/base/string16.mojom";
import "ui/gfx/geometry/mojo/geometry.mojom";
import "ui/gfx/range/mojo/range.mojom";
import "url/mojom/url.mojom";

// Tree structure for assistant. The tree is represented as a flat array of
// nodes, each containing a children_indices vector that points to its child
// nodes. The purpose is to work around max depth restriction of recursive
// data structure in mojo.
struct AssistantTree {
  array<AssistantNode> nodes;
};

// Represents view structure to be passed to assistant. The view structure is
// synthesized from the AXNode.
struct AssistantNode {
  array<int32> children_indices;

  // Geometry of the view in pixels
  gfx.mojom.Rect rect;

  // Text of the view.
  mojo_base.mojom.String16 text;

  // Text properties
  float text_size;
  uint32 color;
  uint32 bgcolor;
  bool bold;
  bool italic;
  bool underline;
  bool line_through;

  // Selected portion of the text.
  gfx.mojom.Range? selection;

  // Fake Android view class name of the element.  Each node is assigned
  // a closest approximation of Android's views to keep the server happy.
  string class_name;

  // Accessibility functionality of the node inferred from DOM or based on HTML
  // role attribute.
  string? role;
};

// Additional information to current context.
struct AssistantExtra {
  url.mojom.Url url;
  gfx.mojom.Rect bounds_pixel;
  mojo_base.mojom.String16 title;
};