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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 "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"
#include "ui/accessibility/ax_mode.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 {
USING_FAST_MALLOC(AXContext);
public:
AXContext(Document& document, const ui::AXMode& mode);
AXContext(const AXContext&) = delete;
AXContext& operator=(const AXContext&) = delete;
virtual ~AXContext();
// Note: it's an error to call this after |document| is no longer active.
// The caller should check this.
AXObjectCache& GetAXObjectCache();
// Returns true if the |document| associated to this |AXContext| is active
// (i.e. document has been initialized and hasn't been detached yet).
bool HasActiveDocument();
Document* GetDocument();
const ui::AXMode& GetAXMode() { return ax_mode_; }
protected:
WeakPersistent<Document> document_;
const ui::AXMode ax_mode_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_ACCESSIBILITY_AX_CONTEXT_H_