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// Copyright 2022 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_ACCESSIBILITY_PLATFORM_CHILD_ITERATOR_H_
#define UI_ACCESSIBILITY_PLATFORM_CHILD_ITERATOR_H_
#include "base/component_export.h"
#include "ui/accessibility/platform/ax_platform_node_delegate.h"
namespace ui {
class COMPONENT_EXPORT(AX_PLATFORM) ChildIterator {
public:
virtual ~ChildIterator() = default;
bool operator==(const ChildIterator& rhs) const {
return GetIndexInParent() == rhs.GetIndexInParent();
}
// We can't have a pure virtual postfix increment/decrement operator
// overloads, since postfix operator overloads need to be return by value, and
// the overridden overloads in the derived classes would have to differ in
// type to the ones declared here.
virtual ChildIterator& operator++() = 0;
virtual ChildIterator& operator--() = 0;
virtual gfx::NativeViewAccessible GetNativeViewAccessible() const = 0;
virtual std::optional<size_t> GetIndexInParent() const = 0;
virtual AXPlatformNodeDelegate* get() const = 0;
virtual AXPlatformNodeDelegate& operator*() const = 0;
virtual AXPlatformNodeDelegate* operator->() const = 0;
};
} // namespace ui
#endif // UI_ACCESSIBILITY_PLATFORM_CHILD_ITERATOR_H_
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