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// Copyright 2016 The Chromium Authors
// 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_DOM_STATIC_RANGE_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_DOM_STATIC_RANGE_H_
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/dom/abstract_range.h"
#include "third_party/blink/renderer/core/dom/range.h"
#include "third_party/blink/renderer/core/editing/forward.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
namespace blink {
class Document;
class ExceptionState;
class StaticRangeInit;
class CORE_EXPORT StaticRange final : public AbstractRange {
DEFINE_WRAPPERTYPEINFO();
public:
static StaticRange* Create(const Range* range) {
return MakeGarbageCollected<StaticRange>(
range->OwnerDocument(), range->startContainer(), range->startOffset(),
range->endContainer(), range->endOffset());
}
static StaticRange* Create(const EphemeralRange&);
static StaticRange* Create(Document&,
const StaticRangeInit*,
ExceptionState&);
StaticRange(Document&,
Node* start_container,
unsigned start_offset,
Node* end_container,
unsigned end_offset);
Node* startContainer() const override { return start_container_.Get(); }
unsigned startOffset() const override { return start_offset_; }
Node* endContainer() const override { return end_container_.Get(); }
unsigned endOffset() const override { return end_offset_; }
bool collapsed() const override {
return start_container_ == end_container_ && start_offset_ == end_offset_;
}
Range* toRange(ExceptionState&) const;
bool IsValid() const;
bool IsStaticRange() const override { return true; }
Document& OwnerDocument() const override { return *owner_document_.Get(); }
void Trace(Visitor*) const override;
private:
Member<Document> owner_document_; // Required by |toRange()|.
Member<Node> start_container_;
unsigned start_offset_ = 0;
Member<Node> end_container_;
unsigned end_offset_ = 0;
mutable bool is_valid_ = false;
mutable uint64_t dom_tree_version_for_is_valid_ = 0;
};
using StaticRangeVector = HeapVector<Member<StaticRange>>;
using GCedStaticRangeVector = GCedHeapVector<Member<StaticRange>>;
template <>
struct DowncastTraits<StaticRange> {
static bool AllowFrom(const AbstractRange& abstract_range) {
return abstract_range.IsStaticRange();
}
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_DOM_STATIC_RANGE_H_
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