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1
11
12 package org.eclipse.ui.internal.activities;
13
14 import java.io.IOException  ;
15 import java.util.ArrayList ;
16 import java.util.Collections ;
17 import java.util.List ;
18
19 import org.eclipse.core.runtime.IConfigurationElement;
20 import org.eclipse.core.runtime.IExtension;
21 import org.eclipse.core.runtime.IExtensionDelta;
22 import org.eclipse.core.runtime.IExtensionRegistry;
23 import org.eclipse.core.runtime.IRegistryChangeEvent;
24 import org.eclipse.core.runtime.IRegistryChangeListener;
25 import org.eclipse.ui.internal.util.ConfigurationElementMemento;
26
27 final class ExtensionActivityRegistry extends AbstractActivityRegistry {
28 private List activityRequirementBindingDefinitions;
29
30 private List activityDefinitions;
31
32 private List activityPatternBindingDefinitions;
33
34 private List categoryActivityBindingDefinitions;
35
36 private List categoryDefinitions;
37
38 private List defaultEnabledActivities;
39
40 private IExtensionRegistry extensionRegistry;
41
42 ExtensionActivityRegistry(IExtensionRegistry extensionRegistry) {
43 if (extensionRegistry == null) {
44 throw new NullPointerException ();
45 }
46
47 this.extensionRegistry = extensionRegistry;
48
49 this.extensionRegistry
50 .addRegistryChangeListener(new IRegistryChangeListener() {
51 public void registryChanged(
52 IRegistryChangeEvent registryChangeEvent) {
53 IExtensionDelta[] extensionDeltas = registryChangeEvent
54 .getExtensionDeltas(Persistence.PACKAGE_PREFIX,
55 Persistence.PACKAGE_BASE);
56
57 if (extensionDeltas.length != 0) {
58 try {
59 load();
60 } catch (IOException eIO) {
61 }
62 }
63 }
64 });
65
66 try {
67 load();
68 } catch (IOException eIO) {
69 }
70 }
71
72 private String getNamespace(IConfigurationElement configurationElement) {
73 String namespace = null;
74
75 if (configurationElement != null) {
76 IExtension extension = configurationElement.getDeclaringExtension();
77
78 if (extension != null) {
79 namespace = extension.getNamespace();
80 }
81 }
82
83 return namespace;
84 }
85
86 private void load() throws IOException {
87 if (activityRequirementBindingDefinitions == null) {
88 activityRequirementBindingDefinitions = new ArrayList ();
89 } else {
90 activityRequirementBindingDefinitions.clear();
91 }
92
93 if (activityDefinitions == null) {
94 activityDefinitions = new ArrayList ();
95 } else {
96 activityDefinitions.clear();
97 }
98
99 if (activityPatternBindingDefinitions == null) {
100 activityPatternBindingDefinitions = new ArrayList ();
101 } else {
102 activityPatternBindingDefinitions.clear();
103 }
104
105 if (categoryActivityBindingDefinitions == null) {
106 categoryActivityBindingDefinitions = new ArrayList ();
107 } else {
108 categoryActivityBindingDefinitions.clear();
109 }
110
111 if (categoryDefinitions == null) {
112 categoryDefinitions = new ArrayList ();
113 } else {
114 categoryDefinitions.clear();
115 }
116
117 if (defaultEnabledActivities == null) {
118 defaultEnabledActivities = new ArrayList ();
119 } else {
120 defaultEnabledActivities.clear();
121 }
122
123 IConfigurationElement[] configurationElements = extensionRegistry
124 .getConfigurationElementsFor(Persistence.PACKAGE_FULL);
125
126 for (int i = 0; i < configurationElements.length; i++) {
127 IConfigurationElement configurationElement = configurationElements[i];
128 String name = configurationElement.getName();
129
130 if (Persistence.TAG_ACTIVITY_REQUIREMENT_BINDING.equals(name)) {
131 readActivityRequirementBindingDefinition(configurationElement);
132 } else if (Persistence.TAG_ACTIVITY.equals(name)) {
133 readActivityDefinition(configurationElement);
134 } else if (Persistence.TAG_ACTIVITY_PATTERN_BINDING.equals(name)) {
135 readActivityPatternBindingDefinition(configurationElement);
136 } else if (Persistence.TAG_CATEGORY_ACTIVITY_BINDING.equals(name)) {
137 readCategoryActivityBindingDefinition(configurationElement);
138 } else if (Persistence.TAG_CATEGORY.equals(name)) {
139 readCategoryDefinition(configurationElement);
140 } else if (Persistence.TAG_DEFAULT_ENABLEMENT.equals(name)) {
141 readDefaultEnablement(configurationElement);
142 }
143 }
144
145 boolean activityRegistryChanged = false;
146
147 if (!activityRequirementBindingDefinitions
148 .equals(super.activityRequirementBindingDefinitions)) {
149 super.activityRequirementBindingDefinitions = Collections
150 .unmodifiableList(activityRequirementBindingDefinitions);
151 activityRegistryChanged = true;
152 }
153
154 if (!activityDefinitions.equals(super.activityDefinitions)) {
155 super.activityDefinitions = Collections
156 .unmodifiableList(activityDefinitions);
157 activityRegistryChanged = true;
158 }
159
160 if (!activityPatternBindingDefinitions
161 .equals(super.activityPatternBindingDefinitions)) {
162 super.activityPatternBindingDefinitions = Collections
163 .unmodifiableList(activityPatternBindingDefinitions);
164 activityRegistryChanged = true;
165 }
166
167 if (!categoryActivityBindingDefinitions
168 .equals(super.categoryActivityBindingDefinitions)) {
169 super.categoryActivityBindingDefinitions = Collections
170 .unmodifiableList(categoryActivityBindingDefinitions);
171 activityRegistryChanged = true;
172 }
173
174 if (!categoryDefinitions.equals(super.categoryDefinitions)) {
175 super.categoryDefinitions = Collections
176 .unmodifiableList(categoryDefinitions);
177 activityRegistryChanged = true;
178 }
179
180 if (!defaultEnabledActivities.equals(super.defaultEnabledActivities)) {
181 super.defaultEnabledActivities = Collections
182 .unmodifiableList(defaultEnabledActivities);
183 activityRegistryChanged = true;
184 }
185
186 if (activityRegistryChanged) {
187 fireActivityRegistryChanged();
188 }
189 }
190
191 private void readDefaultEnablement(
192 IConfigurationElement configurationElement) {
193 String enabledActivity = Persistence
194 .readDefaultEnablement(new ConfigurationElementMemento(
195 configurationElement));
196
197 if (enabledActivity != null) {
198 defaultEnabledActivities.add(enabledActivity);
199 }
200
201 }
202
203 private void readActivityRequirementBindingDefinition(
204 IConfigurationElement configurationElement) {
205 ActivityRequirementBindingDefinition activityRequirementBindingDefinition = Persistence
206 .readActivityRequirementBindingDefinition(
207 new ConfigurationElementMemento(configurationElement),
208 getNamespace(configurationElement));
209
210 if (activityRequirementBindingDefinition != null) {
211 activityRequirementBindingDefinitions
212 .add(activityRequirementBindingDefinition);
213 }
214 }
215
216 private void readActivityDefinition(
217 IConfigurationElement configurationElement) {
218 ActivityDefinition activityDefinition = Persistence
219 .readActivityDefinition(new ConfigurationElementMemento(
220 configurationElement),
221 getNamespace(configurationElement));
222
223 if (activityDefinition != null) {
224 activityDefinitions.add(activityDefinition);
225 }
226 }
227
228 private void readActivityPatternBindingDefinition(
229 IConfigurationElement configurationElement) {
230 ActivityPatternBindingDefinition activityPatternBindingDefinition = Persistence
231 .readActivityPatternBindingDefinition(
232 new ConfigurationElementMemento(configurationElement),
233 getNamespace(configurationElement));
234
235 if (activityPatternBindingDefinition != null) {
236 activityPatternBindingDefinitions
237 .add(activityPatternBindingDefinition);
238 }
239 }
240
241 private void readCategoryActivityBindingDefinition(
242 IConfigurationElement configurationElement) {
243 CategoryActivityBindingDefinition categoryActivityBindingDefinition = Persistence
244 .readCategoryActivityBindingDefinition(
245 new ConfigurationElementMemento(configurationElement),
246 getNamespace(configurationElement));
247
248 if (categoryActivityBindingDefinition != null) {
249 categoryActivityBindingDefinitions
250 .add(categoryActivityBindingDefinition);
251 }
252 }
253
254 private void readCategoryDefinition(
255 IConfigurationElement configurationElement) {
256 CategoryDefinition categoryDefinition = Persistence
257 .readCategoryDefinition(new ConfigurationElementMemento(
258 configurationElement),
259 getNamespace(configurationElement));
260
261 if (categoryDefinition != null) {
262 categoryDefinitions.add(categoryDefinition);
263 }
264 }
265 }
266 |
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