ax_action_data.h

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// Copyright 2016 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 UI_ACCESSIBILITY_AX_ACTION_DATA_H_
#define UI_ACCESSIBILITY_AX_ACTION_DATA_H_
 
#include "ax_enums.h"
#include "ax_export.h"
#include "ax_tree_id.h"
#include "gfx/geometry/point.h"
#include "gfx/geometry/rect.h"
 
namespace ui {
 
// A compact representation of an accessibility action and the arguments
// associated with that action.
struct AX_EXPORT AXActionData {
  AXActionData();
  AXActionData(const AXActionData& other);
  ~AXActionData();
 
  // This is a simple serializable struct. All member variables should be
  // public and copyable.
 
  // See the ax::mojom::Action enums in ax_enums.mojom for explanations of which
  // parameters apply.
 
  // The action to take.
  ax::mojom::Action action;
 
  // The ID of the tree that this action should be performed on.
  ui::AXTreeID target_tree_id = ui::AXTreeIDUnknown();
 
  // The source extension id (if any) of this action.
  std::string source_extension_id;
 
  // The ID of the node that this action should be performed on.
  int target_node_id = -1;
 
  // The request id of this action tracked by the client.
  int request_id = -1;
 
  // Use enums from ax::mojom::ActionFlags
  int flags = 0;
 
  // For an action that creates a selection, the selection anchor and focus
  // (see ax_tree_data.h for definitions).
  int anchor_node_id = -1;
  int anchor_offset = -1;
 
  int focus_node_id = -1;
  int focus_offset = -1;
 
  // Start index of the text which should be queried for.
  int32_t start_index = -1;
 
  // End index of the text which should be queried for.
  int32_t end_index = -1;
 
  // For custom action.
  int custom_action_id = -1;
 
  // The target rect for the action.
  gfx::Rect target_rect;
 
  // The target point for the action.
  gfx::Point target_point;
 
  // The new value for a node, for the SET_VALUE action. UTF-8 encoded.
  std::string value;
 
  // The event to fire in response to a HIT_TEST action.
  ax::mojom::Event hit_test_event_to_fire;
 
  // The scroll alignment to use for a SCROLL_TO_MAKE_VISIBLE action. The
  // scroll alignment controls where a node is scrolled within the viewport.
  ax::mojom::ScrollAlignment horizontal_scroll_alignment;
  ax::mojom::ScrollAlignment vertical_scroll_alignment;
 
  // The behavior to use for a SCROLL_TO_MAKE_VISIBLE. This controls whether or
  // not the viewport is scrolled when the node is already visible.
  ax::mojom::ScrollBehavior scroll_behavior;
};
 
}  // namespace ui
 
#endif  // UI_ACCESSIBILITY_AX_ACTION_DATA_H_