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1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 package org.chromium.services.shell; | |
6 | |
7 import org.chromium.mojo.bindings.Interface; | |
8 import org.chromium.mojo.system.MessagePipeHandle; | |
9 import org.chromium.mojo.system.MojoException; | |
10 import org.chromium.shell.mojom.InterfaceProvider; | |
11 | |
12 import java.util.HashMap; | |
13 import java.util.Map; | |
14 | |
15 /** | |
16 * A registry where interfaces may be registered to be exposed to another applic
ation. | |
17 * | |
18 * To use, define a class that implements your specific interface. Then | |
19 * implement an InterfaceFactory that creates instances of your implementation | |
20 * and register that on the registry with a Manager for the interface like this: | |
21 * | |
22 * registry.addInterface(InterfaceType.MANAGER, factory); | |
23 */ | |
24 public class InterfaceRegistry implements InterfaceProvider { | |
25 private final Map<String, InterfaceBinder> mBinders = new HashMap<String, In
terfaceBinder>(); | |
26 | |
27 public <I extends Interface> void addInterface( | |
28 Interface.Manager<I, ? extends I.Proxy> manager, InterfaceFactory<I>
factory) { | |
29 mBinders.put(manager.getName(), new InterfaceBinder<I>(manager, factory)
); | |
30 } | |
31 | |
32 public static InterfaceRegistry create(MessagePipeHandle pipe) { | |
33 InterfaceRegistry registry = new InterfaceRegistry(); | |
34 InterfaceProvider.MANAGER.bind(registry, pipe); | |
35 return registry; | |
36 } | |
37 | |
38 @Override | |
39 public void getInterface(String name, MessagePipeHandle pipe) { | |
40 InterfaceBinder binder = mBinders.get(name); | |
41 if (binder == null) { | |
42 return; | |
43 } | |
44 binder.bindToMessagePipe(pipe); | |
45 } | |
46 | |
47 @Override | |
48 public void close() { | |
49 mBinders.clear(); | |
50 } | |
51 | |
52 @Override | |
53 public void onConnectionError(MojoException e) { | |
54 close(); | |
55 } | |
56 | |
57 InterfaceRegistry() {} | |
58 | |
59 private static class InterfaceBinder<I extends Interface> { | |
60 private Interface.Manager<I, ? extends I.Proxy> mManager; | |
61 private InterfaceFactory<I> mFactory; | |
62 | |
63 public InterfaceBinder( | |
64 Interface.Manager<I, ? extends I.Proxy> manager, InterfaceFactor
y<I> factory) { | |
65 mManager = manager; | |
66 mFactory = factory; | |
67 } | |
68 | |
69 public void bindToMessagePipe(MessagePipeHandle pipe) { | |
70 I impl = mFactory.createImpl(); | |
71 if (impl == null) { | |
72 pipe.close(); | |
73 return; | |
74 } | |
75 mManager.bind(impl, pipe); | |
76 } | |
77 } | |
78 } | |
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