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// Copyright 2015 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_MODULES_ENCRYPTEDMEDIA_MEDIA_KEY_STATUS_MAP_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_ENCRYPTEDMEDIA_MEDIA_KEY_STATUS_MAP_H_
#include "third_party/blink/renderer/bindings/core/v8/iterable.h"
#include "third_party/blink/renderer/bindings/core/v8/script_value.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_typedefs.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_sync_iterator_media_key_status_map.h"
#include "third_party/blink/renderer/core/typed_arrays/dom_array_piece.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
namespace blink {
class ExceptionState;
class ScriptState;
class V8UnionMediaKeyStatusOrUndefined;
class WebData;
// Represents a read-only map (to JavaScript) of key IDs and their current
// status known to a particular session. Since it can be updated any time there
// is a keychange event, iteration order and completeness is not guaranteed
// if the event loop runs.
class MediaKeyStatusMap final : public ScriptWrappable,
public PairSyncIterable<MediaKeyStatusMap> {
DEFINE_WRAPPERTYPEINFO();
private:
// MapEntry holds the keyId (DOMArrayBuffer) and status (MediaKeyStatus as
// String) for each entry.
class MapEntry;
// The key ids and their status are kept in a list, as order is important.
// Note that order (or lack of it) is not specified in the EME spec.
using MediaKeyStatusMapType = HeapVector<Member<MapEntry>>;
public:
MediaKeyStatusMap() = default;
void Clear();
void AddEntry(WebData key_id, const V8MediaKeyStatus&);
const MapEntry& at(uint32_t) const;
// IDL attributes / methods
uint32_t size() const { return entries_.size(); }
bool has(const V8BufferSource* key_id);
V8UnionMediaKeyStatusOrUndefined* get(const V8BufferSource* key_id);
void Trace(Visitor*) const override;
private:
// PairSyncIterable<> implementation.
IterationSource* CreateIterationSource(ScriptState*,
ExceptionState&) override;
uint32_t IndexOf(const DOMArrayPiece& key_id) const;
MediaKeyStatusMapType entries_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_ENCRYPTEDMEDIA_MEDIA_KEY_STATUS_MAP_H_
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