dom/cellbroadcast/src/CellBroadcast.cpp

branch
TOR_BUG_9701
changeset 15
b8a032363ba2
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-1:000000000000 0:cb7d7371d11d
1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
5
6 #include "CellBroadcast.h"
7 #include "mozilla/dom/MozCellBroadcastBinding.h"
8 #include "nsIDOMMozCellBroadcastEvent.h"
9 #include "nsIDOMMozCellBroadcastMessage.h"
10 #include "nsServiceManagerUtils.h"
11 #include "GeneratedEvents.h"
12
13 #define NS_RILCONTENTHELPER_CONTRACTID "@mozilla.org/ril/content-helper;1"
14
15 using namespace mozilla::dom;
16
17 /**
18 * CellBroadcast::Listener Implementation.
19 */
20
21 class CellBroadcast::Listener : public nsICellBroadcastListener
22 {
23 private:
24 CellBroadcast* mCellBroadcast;
25
26 public:
27 NS_DECL_ISUPPORTS
28 NS_FORWARD_SAFE_NSICELLBROADCASTLISTENER(mCellBroadcast)
29
30 Listener(CellBroadcast* aCellBroadcast)
31 : mCellBroadcast(aCellBroadcast)
32 {
33 MOZ_ASSERT(mCellBroadcast);
34 }
35
36 void Disconnect()
37 {
38 MOZ_ASSERT(mCellBroadcast);
39 mCellBroadcast = nullptr;
40 }
41 };
42
43 NS_IMPL_ISUPPORTS(CellBroadcast::Listener, nsICellBroadcastListener)
44
45 /**
46 * CellBroadcast Implementation.
47 */
48
49 // static
50 already_AddRefed<CellBroadcast>
51 CellBroadcast::Create(nsPIDOMWindow* aWindow, ErrorResult& aRv)
52 {
53 MOZ_ASSERT(aWindow);
54 MOZ_ASSERT(aWindow->IsInnerWindow());
55
56 nsCOMPtr<nsICellBroadcastProvider> provider =
57 do_GetService(NS_RILCONTENTHELPER_CONTRACTID);
58 if (!provider) {
59 aRv.Throw(NS_ERROR_UNEXPECTED);
60 return nullptr;
61 }
62
63 nsRefPtr<CellBroadcast> cb = new CellBroadcast(aWindow, provider);
64 return cb.forget();
65 }
66
67 CellBroadcast::CellBroadcast(nsPIDOMWindow *aWindow,
68 nsICellBroadcastProvider *aProvider)
69 : DOMEventTargetHelper(aWindow)
70 , mProvider(aProvider)
71 {
72 mListener = new Listener(this);
73 DebugOnly<nsresult> rv = mProvider->RegisterCellBroadcastMsg(mListener);
74 NS_WARN_IF_FALSE(NS_SUCCEEDED(rv),
75 "Failed registering Cell Broadcast callback with provider");
76 }
77
78 CellBroadcast::~CellBroadcast()
79 {
80 MOZ_ASSERT(mProvider && mListener);
81
82 mListener->Disconnect();
83 mProvider->UnregisterCellBroadcastMsg(mListener);
84 }
85
86 JSObject*
87 CellBroadcast::WrapObject(JSContext* aCx)
88 {
89 return MozCellBroadcastBinding::Wrap(aCx, this);
90 }
91
92 // Forwarded nsICellBroadcastListener methods
93
94 NS_IMETHODIMP
95 CellBroadcast::NotifyMessageReceived(nsIDOMMozCellBroadcastMessage* aMessage)
96 {
97 nsCOMPtr<nsIDOMEvent> event;
98 NS_NewDOMMozCellBroadcastEvent(getter_AddRefs(event), this, nullptr, nullptr);
99
100 nsCOMPtr<nsIDOMMozCellBroadcastEvent> ce = do_QueryInterface(event);
101 nsresult rv = ce->InitMozCellBroadcastEvent(NS_LITERAL_STRING("received"),
102 true, false, aMessage);
103 NS_ENSURE_SUCCESS(rv, rv);
104
105 return DispatchTrustedEvent(ce);
106 }

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