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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_BLUETOOTH_BLUETOOTH_REMOTE_GATT_CHARACTERISTIC_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_BLUETOOTH_BLUETOOTH_REMOTE_GATT_CHARACTERISTIC_H_
#include "mojo/public/cpp/bindings/associated_receiver_set.h"
#include "third_party/blink/public/mojom/bluetooth/web_bluetooth.mojom-blink-forward.h"
#include "third_party/blink/renderer/bindings/core/v8/active_script_wrappable.h"
#include "third_party/blink/renderer/core/execution_context/context_lifecycle_observer.h"
#include "third_party/blink/renderer/core/typed_arrays/dom_array_piece.h"
#include "third_party/blink/renderer/core/typed_arrays/dom_data_view.h"
#include "third_party/blink/renderer/modules/bluetooth/bluetooth_remote_gatt_service.h"
#include "third_party/blink/renderer/modules/event_target_modules.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
class BluetoothCharacteristicProperties;
class BluetoothDevice;
class DOMException;
class ExecutionContext;
class ScriptPromise;
class ScriptState;
// BluetoothRemoteGATTCharacteristic represents a GATT Characteristic, which is
// a basic data element that provides further information about a peripheral's
// service.
//
// Callbacks providing WebBluetoothRemoteGATTCharacteristicInit objects are
// handled by CallbackPromiseAdapter templatized with this class. See this
// class's "Interface required by CallbackPromiseAdapter" section and the
// CallbackPromiseAdapter class comments.
class BluetoothRemoteGATTCharacteristic final
: public EventTargetWithInlineData,
public ActiveScriptWrappable<BluetoothRemoteGATTCharacteristic>,
public ContextLifecycleObserver,
public mojom::blink::WebBluetoothCharacteristicClient {
USING_PRE_FINALIZER(BluetoothRemoteGATTCharacteristic, Dispose);
DEFINE_WRAPPERTYPEINFO();
USING_GARBAGE_COLLECTED_MIXIN(BluetoothRemoteGATTCharacteristic);
public:
explicit BluetoothRemoteGATTCharacteristic(
ExecutionContext*,
mojom::blink::WebBluetoothRemoteGATTCharacteristicPtr,
BluetoothRemoteGATTService*,
BluetoothDevice*);
// Save value.
void SetValue(DOMDataView*);
// mojom::blink::WebBluetoothCharacteristicClient:
void RemoteCharacteristicValueChanged(
const WTF::Vector<uint8_t>& value) override;
// ContextLifecycleObserver interface.
void ContextDestroyed(ExecutionContext*) override;
// USING_PRE_FINALIZER interface.
// Called before the object gets garbage collected.
void Dispose();
// EventTarget methods:
const AtomicString& InterfaceName() const override;
ExecutionContext* GetExecutionContext() const override;
// ActiveScriptWrappable methods:
bool HasPendingActivity() const override;
// Interface required by garbage collection.
void Trace(blink::Visitor*) override;
// IDL exposed interface:
BluetoothRemoteGATTService* service() { return service_; }
String uuid() { return characteristic_->uuid; }
BluetoothCharacteristicProperties* properties() { return properties_; }
DOMDataView* value() const { return value_; }
ScriptPromise getDescriptor(ScriptState*,
const StringOrUnsignedLong& descriptor,
ExceptionState&);
ScriptPromise getDescriptors(ScriptState*, ExceptionState&);
ScriptPromise getDescriptors(ScriptState*,
const StringOrUnsignedLong& descriptor,
ExceptionState&);
ScriptPromise readValue(ScriptState*);
ScriptPromise writeValue(ScriptState*, const DOMArrayPiece&);
ScriptPromise startNotifications(ScriptState*);
ScriptPromise stopNotifications(ScriptState*);
DEFINE_ATTRIBUTE_EVENT_LISTENER(characteristicvaluechanged,
kCharacteristicvaluechanged)
protected:
// EventTarget overrides.
void AddedEventListener(const AtomicString& event_type,
RegisteredEventListener&) override;
private:
friend class BluetoothRemoteGATTDescriptor;
BluetoothRemoteGATTServer* GetGatt() { return service_->device()->gatt(); }
void ReadValueCallback(ScriptPromiseResolver*,
mojom::blink::WebBluetoothResult,
const base::Optional<Vector<uint8_t>>& value);
void WriteValueCallback(ScriptPromiseResolver*,
const Vector<uint8_t>& value,
mojom::blink::WebBluetoothResult);
void NotificationsCallback(ScriptPromiseResolver*,
mojom::blink::WebBluetoothResult);
ScriptPromise GetDescriptorsImpl(ScriptState*,
mojom::blink::WebBluetoothGATTQueryQuantity,
const String& descriptor_uuid = String());
void GetDescriptorsCallback(
const String& requested_descriptor_uuid,
const String& characteristic_instance_id,
mojom::blink::WebBluetoothGATTQueryQuantity,
ScriptPromiseResolver*,
mojom::blink::WebBluetoothResult,
base::Optional<Vector<mojom::blink::WebBluetoothRemoteGATTDescriptorPtr>>
descriptors);
DOMException* CreateInvalidCharacteristicError();
mojom::blink::WebBluetoothRemoteGATTCharacteristicPtr characteristic_;
Member<BluetoothRemoteGATTService> service_;
Member<BluetoothCharacteristicProperties> properties_;
Member<DOMDataView> value_;
Member<BluetoothDevice> device_;
mojo::AssociatedReceiverSet<mojom::blink::WebBluetoothCharacteristicClient>
receivers_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_BLUETOOTH_BLUETOOTH_REMOTE_GATT_CHARACTERISTIC_H_
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