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- // Copyright 2015 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_TREE_DATA_H_
- #define UI_ACCESSIBILITY_AX_TREE_DATA_H_
- #include <stdint.h>
- #include <map>
- #include <string>
- #include <vector>
- #include "base/strings/string_split.h"
- #include "ui/accessibility/ax_action_handler_registry.h"
- #include "ui/accessibility/ax_base_export.h"
- #include "ui/accessibility/ax_enums.mojom-forward.h"
- #include "ui/accessibility/ax_node_data.h"
- #include "ui/gfx/geometry/rect.h"
- namespace ui {
- // The data associated with an accessibility tree that's global to the
- // tree and not associated with any particular node in the tree.
- struct AX_BASE_EXPORT AXTreeData {
- AXTreeData();
- AXTreeData(const AXTreeData& other);
- virtual ~AXTreeData();
- // Return a string representation of this data, for debugging.
- virtual std::string ToString() const;
- // This is a simple serializable struct. All member variables should be
- // public and copyable.
- // The globally unique ID of this accessibility tree.
- AXTreeID tree_id;
- // The ID of the accessibility tree that this tree is contained in, if any.
- AXTreeID parent_tree_id;
- // The ID of the accessibility tree that has focus. This is typically set
- // on the root frame in a frame tree.
- AXTreeID focused_tree_id;
- // Attributes specific to trees that are web frames.
- std::string doctype;
- bool loaded = false;
- float loading_progress = 0.0f;
- std::string mimetype;
- std::string title;
- std::string url;
- // The node with keyboard focus within this tree, if any, or
- // kInvalidAXNodeID if no node in this tree has focus.
- AXNodeID focus_id = kInvalidAXNodeID;
- // The current text selection within this tree, if any, expressed as the
- // node ID and character offset of the anchor (selection start) and focus
- // (selection end). If the offset could correspond to a position on two
- // different lines, sel_upstream_affinity means the cursor is on the first
- // line, otherwise it's on the second line.
- // Most use cases will want to use ui::OwnerTree::GetUnignoredSelection.
- bool sel_is_backward = false;
- AXNodeID sel_anchor_object_id = kInvalidAXNodeID;
- int32_t sel_anchor_offset = -1;
- ax::mojom::TextAffinity sel_anchor_affinity;
- AXNodeID sel_focus_object_id = kInvalidAXNodeID;
- int32_t sel_focus_offset = -1;
- ax::mojom::TextAffinity sel_focus_affinity;
- // The node that's used as the root scroller. On some platforms
- // like Android we need to ignore accessibility scroll offsets for
- // that node and get them from the viewport instead.
- AXNodeID root_scroller_id = kInvalidAXNodeID;
- // Metadata from an HTML HEAD, such as <meta> tags. Stored here
- // unparsed because the only applications that need these just want
- // raw strings. Only included if the kHTMLMetadata AXMode is enabled.
- std::vector<std::string> metadata;
- };
- AX_BASE_EXPORT bool operator==(const AXTreeData& lhs, const AXTreeData& rhs);
- AX_BASE_EXPORT bool operator!=(const AXTreeData& lhs, const AXTreeData& rhs);
- } // namespace ui
- #endif // UI_ACCESSIBILITY_AX_TREE_DATA_H_
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