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// Copyright 2015 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_MODULES_NFC_NFC_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_NFC_NFC_H_
#include "mojo/public/cpp/bindings/binding.h"
#include "services/device/public/mojom/nfc.mojom-blink.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/bindings/modules/v8/string_or_array_buffer_or_nfc_message.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_message_callback.h"
#include "third_party/blink/renderer/core/dom/context_lifecycle_observer.h"
#include "third_party/blink/renderer/core/page/page_visibility_observer.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/wtf/hash_map.h"
namespace blink {
class NFCPushOptions;
using NFCPushMessage = StringOrArrayBufferOrNFCMessage;
class NFCWatchOptions;
class ScriptPromiseResolver;
class NFC final : public ScriptWrappable,
public PageVisibilityObserver,
public ContextLifecycleObserver,
public device::mojom::blink::NFCClient {
DEFINE_WRAPPERTYPEINFO();
USING_GARBAGE_COLLECTED_MIXIN(NFC);
USING_PRE_FINALIZER(NFC, Dispose);
public:
static NFC* Create(LocalFrame*);
~NFC() override;
void Dispose();
// ContextLifecycleObserver overrides.
void ContextDestroyed(ExecutionContext*) override;
// Pushes NFCPushMessage asynchronously to NFC tag / peer.
ScriptPromise push(ScriptState*,
const NFCPushMessage&,
const NFCPushOptions&);
// Cancels ongoing push operation.
ScriptPromise cancelPush(ScriptState*, const String&);
// Starts watching for NFC messages that match NFCWatchOptions criteria.
ScriptPromise watch(ScriptState*, V8MessageCallback*, const NFCWatchOptions&);
// Cancels watch operation with id.
ScriptPromise cancelWatch(ScriptState*, int32_t id);
// Cancels all watch operations.
ScriptPromise cancelWatch(ScriptState*);
// Implementation of PageVisibilityObserver.
void PageVisibilityChanged() override;
// Interface required by garbage collection.
void Trace(blink::Visitor*) override;
private:
// Returns boolean indicating whether NFC is supported in this context. If
// not, |error_message| gives a message indicating why not.
bool IsSupportedInContext(ExecutionContext*, String& error_message);
// Returns promise with DOMException if feature is not supported
// or when context is not secure. Otherwise, returns empty promise.
ScriptPromise RejectIfNotSupported(ScriptState*);
void OnRequestCompleted(ScriptPromiseResolver*,
device::mojom::blink::NFCErrorPtr);
void OnConnectionError();
void OnWatchRegistered(V8PersistentCallbackFunction<V8MessageCallback>*,
ScriptPromiseResolver*,
uint32_t id,
device::mojom::blink::NFCErrorPtr);
// device::mojom::blink::NFCClient implementation.
void OnWatch(const Vector<uint32_t>& ids,
device::mojom::blink::NFCMessagePtr) override;
private:
explicit NFC(LocalFrame*);
device::mojom::blink::NFCPtr nfc_;
mojo::Binding<device::mojom::blink::NFCClient> client_binding_;
HeapHashSet<Member<ScriptPromiseResolver>> requests_;
using WatchCallbacksMap =
HeapHashMap<uint32_t, TraceWrapperMember<V8MessageCallback>>;
WatchCallbacksMap callbacks_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_NFC_NFC_H_
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