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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_VIEWS_ACCESSIBILITY_AX_TREE_SOURCE_VIEWS_H_
#define UI_VIEWS_ACCESSIBILITY_AX_TREE_SOURCE_VIEWS_H_
#include <string>
#include <vector>
#include "base/memory/raw_ptr.h"
#include "ui/accessibility/ax_tree_id.h"
#include "ui/accessibility/ax_tree_source.h"
#include "ui/views/views_export.h"
namespace ui {
struct AXActionData;
struct AXNodeData;
struct AXTreeData;
} // namespace ui
namespace views {
class AXAuraObjCache;
class AXAuraObjWrapper;
// This class exposes the views hierarchy as an accessibility tree permitting
// use with other accessibility classes. The root can be an existing object in
// the Widget/View hierarchy or a new node (for example to create the "desktop"
// node for the extension API call chrome.automation.getDesktop()).
class VIEWS_EXPORT AXTreeSourceViews
: public ui::
AXTreeSource<AXAuraObjWrapper*, ui::AXTreeData*, ui::AXNodeData> {
public:
AXTreeSourceViews(ui::AXNodeID root_id,
const ui::AXTreeID& tree_id,
AXAuraObjCache* cache);
AXTreeSourceViews(const AXTreeSourceViews&) = delete;
AXTreeSourceViews& operator=(const AXTreeSourceViews&) = delete;
~AXTreeSourceViews() override;
// Invokes an action on an Aura object.
void HandleAccessibleAction(const ui::AXActionData& action);
// AXTreeSource:
bool GetTreeData(ui::AXTreeData* data) const override;
AXAuraObjWrapper* GetRoot() const override;
AXAuraObjWrapper* GetFromId(int32_t id) const override;
int32_t GetId(AXAuraObjWrapper* node) const override;
void CacheChildrenIfNeeded(AXAuraObjWrapper*) override;
size_t GetChildCount(AXAuraObjWrapper* node) const override;
void ClearChildCache(AXAuraObjWrapper*) override;
AXAuraObjWrapper* ChildAt(AXAuraObjWrapper* node, size_t) const override;
AXAuraObjWrapper* GetParent(AXAuraObjWrapper* node) const override;
bool IsIgnored(AXAuraObjWrapper* node) const override;
bool IsEqual(AXAuraObjWrapper* node1, AXAuraObjWrapper* node2) const override;
AXAuraObjWrapper* GetNull() const override;
std::string GetDebugString(AXAuraObjWrapper* node) const override;
void SerializeNode(AXAuraObjWrapper* node,
ui::AXNodeData* out_data) const override;
// Useful for debugging.
std::string ToString(views::AXAuraObjWrapper* root, std::string prefix);
const ui::AXTreeID tree_id() const { return tree_id_; }
private:
// The ID of the top-level object to use for the AX tree.
const ui::AXNodeID root_id_;
// ID to use for the AX tree.
const ui::AXTreeID tree_id_;
const raw_ptr<views::AXAuraObjCache> cache_;
};
} // namespace views
#endif // UI_VIEWS_ACCESSIBILITY_AX_TREE_SOURCE_VIEWS_H_
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