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126 lines
4.2 KiB
C++
126 lines
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_BluetoothUUID_h
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#define mozilla_dom_BluetoothUUID_h
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#include "mozilla/dom/BluetoothUUIDBinding.h"
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#include "mozilla/StaticPtr.h"
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#include "nsCOMPtr.h"
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#include "nsDataHashtable.h"
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#include "nsHashKeys.h"
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#include "nsIObserver.h"
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#include "nsPIDOMWindow.h"
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#include "nsWrapperCache.h"
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namespace mozilla {
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namespace dom {
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class StringOrUnsignedLong;
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class BluetoothUUID final : public nsISupports
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, public nsWrapperCache
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{
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public:
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(BluetoothUUID)
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nsPIDOMWindowInner* GetParentObject() const
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{
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return mOwner;
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}
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virtual JSObject* WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) override;
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/**
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* Delete sUUIDServiceTable, sUUIDCharacteristicTable, sUUIDDescriptorTable
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* used by ResolveUUIDName(). To be called from nsLayoutStatics only.
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*/
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static void HandleShutdown();
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static void GetService(const GlobalObject& aGlobal,
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const StringOrUnsignedLong& aName,
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nsAString& aReturn, ErrorResult& aRv);
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static void GetCharacteristic(const GlobalObject& aGlobal,
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const StringOrUnsignedLong& aName,
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nsAString& aReturn, ErrorResult& aRv);
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static void GetDescriptor(const GlobalObject& aGlobal,
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const StringOrUnsignedLong& aName,
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nsAString& aReturn, ErrorResult& aRv);
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static void CanonicalUUID(const GlobalObject& aGlobal, uint32_t aAlias,
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nsAString& aReturn);
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private:
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BluetoothUUID(nsPIDOMWindowInner* aOwner);
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~BluetoothUUID();
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static void InitServiceTable();
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static void InitCharacteristicTable();
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static void InitDescriptorTable();
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enum GattAttribute {
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SERVICE,
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CHARACTERISTIC,
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DESCRIPTOR
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};
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/**
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* Convert an UUID string or 16-bit/32-bit UUID alias to a 128-bit UUID based
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* on its bluetooth attribute.
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*
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* @param aGlobal [in] a Global object for static attributes. We have this
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* argument because it needs to call |CanonicalUUID|.
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* @param aName [in] an UUID string or 16-bit/32-bit UUID alias.
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* @param aAttr [in] a GATT Attribute type.
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* @param aReturn [out] a 128-bit UUID.
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*/
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static void ResolveUUIDName(const GlobalObject& aGlobal,
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const StringOrUnsignedLong& aName,
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GattAttribute aAttr, nsAString& aReturn,
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ErrorResult& aRv);
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/**
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* Get the GATT attribute table based on the GATT attribute and check whether
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* the UUID string can be mapped to a known alias.
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*
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* @param aAttr [in] a GATT Attribute type.
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* @param aString [in] an UUID string.
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* @param aAlias [out] a known UUID alias if success.
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* @return success if a UUID string can be mapped in table, fail if it
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* cannot.
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*/
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static bool GetTable(GattAttribute aAttr, const nsAString& aString,
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uint32_t& aAlias);
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/****************************************************************************
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* Variables
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***************************************************************************/
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nsCOMPtr<nsPIDOMWindowInner> mOwner;
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static bool sInShutdown;
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/**
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* Hash Table of services for mapping service names to its UUID's prefix.
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*/
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static nsDataHashtable<nsStringHashKey, uint32_t>* sUUIDServiceTable;
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/**
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* Hash Table of characteristics for mapping characteristic names to its UUID's prefix.
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*/
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static nsDataHashtable<nsStringHashKey, uint32_t>* sUUIDCharacteristicTable;
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/**
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* Hash Table of descriptors for mapping descriptor names to its UUID's prefix.
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*/
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static nsDataHashtable<nsStringHashKey, uint32_t>* sUUIDDescriptorTable;
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};
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} // dom
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} // mozilla
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#endif // mozilla_dom_BluetoothUUID_h
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