Commit | Line | Data |
---|---|---|
8c8bf09f ASL |
1 | /******************************************************************************* |
2 | * Copyright (c) 2009, 2010 Ericsson | |
3 | * | |
4 | * All rights reserved. This program and the accompanying materials are | |
5 | * made available under the terms of the Eclipse Public License v1.0 which | |
6 | * accompanies this distribution, and is available at | |
7 | * http://www.eclipse.org/legal/epl-v10.html | |
8 | * | |
9 | * Contributors: | |
10 | * Francois Chouinard - Initial API and implementation | |
11 | *******************************************************************************/ | |
12 | ||
13 | package org.eclipse.linuxtools.tmf.component; | |
14 | ||
15 | import java.util.ArrayList; | |
16 | import java.util.HashMap; | |
17 | import java.util.List; | |
18 | import java.util.Map; | |
19 | ||
20 | import org.eclipse.linuxtools.tmf.event.TmfData; | |
21 | ||
22 | /** | |
23 | * <b><u>TmfProviderManager.java</u></b> | |
24 | * <p> | |
25 | * Singleton that keeps track of the event providers. | |
26 | */ | |
27 | public class TmfProviderManager { | |
28 | ||
8c8bf09f ASL |
29 | // ------------------------------------------------------------------------ |
30 | // Keeps track of the providers for each event type | |
31 | // ------------------------------------------------------------------------ | |
32 | ||
e31e01e8 FC |
33 | private static Map<Class<? extends TmfData>, List<TmfProvider<? extends TmfData>>> fProviders = |
34 | new HashMap<Class<? extends TmfData>, List<TmfProvider<? extends TmfData>>>(); | |
8c8bf09f ASL |
35 | |
36 | /** | |
37 | * Registers [provider] as a provider of [eventType] | |
38 | * | |
39 | * @param eventType | |
40 | * @param provider | |
41 | */ | |
e31e01e8 | 42 | public static <T extends TmfData> void register(Class<T> eventType, TmfProvider<? extends TmfData> provider) { |
8c8bf09f | 43 | if (fProviders.get(eventType) == null) |
e31e01e8 FC |
44 | fProviders.put(eventType, new ArrayList<TmfProvider<? extends TmfData>>()); |
45 | assert(fProviders.get(eventType) != null); | |
8c8bf09f ASL |
46 | fProviders.get(eventType).add(provider); |
47 | } | |
48 | ||
49 | /** | |
50 | * Re-registers [provider] as a provider of [eventType] | |
51 | * | |
e31e01e8 | 52 | * @param eventType |
8c8bf09f ASL |
53 | * @param provider |
54 | */ | |
e31e01e8 FC |
55 | public static <T extends TmfData> void deregister(Class<T> eventType, TmfProvider<? extends TmfData> provider) { |
56 | List<TmfProvider<? extends TmfData>> list = fProviders.get(eventType); | |
8c8bf09f ASL |
57 | if (list != null) { |
58 | list.remove(provider); | |
59 | if (list.size() == 0) | |
e31e01e8 | 60 | fProviders.remove(eventType); |
8c8bf09f ASL |
61 | } |
62 | } | |
63 | ||
64 | /** | |
65 | * Returns the list of components that provide [eventType] | |
66 | * | |
e31e01e8 | 67 | * @param eventType |
8c8bf09f ASL |
68 | * @return |
69 | */ | |
70 | @SuppressWarnings("unchecked") | |
e31e01e8 FC |
71 | public static TmfProvider<? extends TmfData>[] getProviders(Class<? extends TmfData> eventType) { |
72 | List<TmfProvider<? extends TmfData>> list = fProviders.get(eventType); | |
8c8bf09f | 73 | if (list == null) |
e31e01e8 FC |
74 | list = new ArrayList<TmfProvider<? extends TmfData>>(); |
75 | TmfProvider<? extends TmfData>[] result = new TmfProvider[list.size()]; | |
8c8bf09f ASL |
76 | return list.toArray(result); |
77 | } | |
78 | ||
79 | /** | |
80 | * Returns the list of components of type [providerType] that provide [eventType] | |
81 | * | |
82 | * @param type | |
83 | * @param clazz | |
84 | * @return | |
85 | */ | |
86 | @SuppressWarnings("unchecked") | |
e31e01e8 FC |
87 | public static TmfProvider<? extends TmfData>[] getProviders(Class<? extends TmfData> eventType, Class<? extends TmfProvider<? extends TmfData>> providerType) { |
88 | TmfProvider<? extends TmfData>[] list = getProviders(eventType); | |
89 | List<TmfProvider<? extends TmfData>> result = new ArrayList<TmfProvider<? extends TmfData>>(); | |
8c8bf09f | 90 | if (list != null) { |
e31e01e8 FC |
91 | for (TmfProvider<? extends TmfData> provider : list) { |
92 | if (provider.getClass() == providerType) { | |
8c8bf09f ASL |
93 | result.add(provider); |
94 | } | |
95 | } | |
96 | } | |
e31e01e8 | 97 | TmfProvider<? extends TmfData>[] array = new TmfProvider[result.size()]; |
8c8bf09f ASL |
98 | return result.toArray(array); |
99 | } | |
100 | ||
101 | } |