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// 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.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_ACCESSIBILITY_AX_CONTEXT_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_ACCESSIBILITY_AX_CONTEXT_H_
#include "base/macros.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/platform/heap/persistent.h"
namespace blink {
class AXObjectCache;
// An AXContext enables accessibility support in a Document for as
// long as the AXContext is alive. While the AXContext exists,
// Document::ExistingAXObjectCache will always return a valid
// AXObjectCache if the document is still active.
class CORE_EXPORT AXContext {
public:
explicit AXContext(Document& document);
virtual ~AXContext();
// Note: it's an error to call this after |document| is no longer active.
// The caller should check this.
AXObjectCache& GetAXObjectCache();
protected:
WeakPersistent<Document> document_;
DISALLOW_COPY_AND_ASSIGN(AXContext);
};
} // namespace blink
#endif