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1
11 package org.eclipse.team.internal.ui.registry;
12
13 import org.eclipse.core.runtime.*;
14 import org.eclipse.jface.preference.IPreferencePage;
15 import org.eclipse.jface.resource.ImageDescriptor;
16 import org.eclipse.osgi.util.NLS;
17 import org.eclipse.team.internal.ui.TeamUIMessages;
18 import org.eclipse.team.internal.ui.TeamUIPlugin;
19 import org.eclipse.team.ui.mapping.ITeamContentProviderDescriptor;
20 import org.osgi.service.prefs.BackingStoreException;
21 import org.osgi.service.prefs.Preferences;
22
23
27 public class TeamContentProviderDescriptor implements ITeamContentProviderDescriptor {
28
29 private static final String  TAG_TEAM_CONTENT_PROVIDER = "teamContentProvider";
31 private static final String ATT_MODEL_PROVIDER_ID = "modelProviderId"; private static final String ATT_CONTENT_EXTENSION_ID = "contentExtensionId"; private static final String ATT_ICON = "icon"; private static final String ATT_PREFERENCE_PAGE = "preferencePage"; private static final String ATT_SUPPORTS_FLAT_LAYOUT = "supportsFlatLayout";
37 private static final String PREF_TEAM_CONTENT_DESCRIPTORS = "teamContentDescriptors"; private static final String PREF_ENABLED = "enabled";
40 private String modelProviderId;
41 private String contentExtensionId;
42 private String contentProviderName;
43
44 private ImageDescriptor imageDescriptor;
45
46 private IConfigurationElement configElement;
47
48 private boolean supportsFlatLayout;
49
50 public TeamContentProviderDescriptor(IExtension extension) throws CoreException {
51 readExtension(extension);
52 }
53
54
57 protected void readExtension(IExtension extension) throws CoreException {
58 String id = extension.getUniqueIdentifier(); IConfigurationElement[] elements = extension.getConfigurationElements();
61 int count = elements.length;
62 for (int i = 0; i < count; i++) {
63 IConfigurationElement element = elements[i];
64 configElement = element;
65 String name = element.getName();
66 if (name.equalsIgnoreCase(TAG_TEAM_CONTENT_PROVIDER)) {
67 modelProviderId = element.getAttribute(ATT_MODEL_PROVIDER_ID);
68 contentExtensionId = element.getAttribute(ATT_CONTENT_EXTENSION_ID);
69 String supportsFlatLayoutString = element.getAttribute(ATT_SUPPORTS_FLAT_LAYOUT);
70 if (supportsFlatLayoutString != null) {
71 supportsFlatLayout = Boolean.valueOf(supportsFlatLayoutString).booleanValue();
72 }
73 contentProviderName = extension.getLabel();
74 }
75 break;
76 }
77 if (modelProviderId == null)
78 fail(NLS.bind(TeamUIMessages.TeamContentProviderDescriptor_1, new String [] { ATT_MODEL_PROVIDER_ID, TAG_TEAM_CONTENT_PROVIDER, id == null ? "" : id})); if (contentExtensionId == null)
80 fail(NLS.bind(TeamUIMessages.TeamContentProviderDescriptor_1, new String [] { ATT_CONTENT_EXTENSION_ID, TAG_TEAM_CONTENT_PROVIDER, id == null ? "" : id})); }
82
83 protected void fail(String reason) throws CoreException {
84 throw new CoreException(new Status(IStatus.ERROR, TeamUIPlugin.ID, 0, reason, null));
85 }
86
87
90 public String getContentExtensionId() {
91 return contentExtensionId;
92 }
93
94
97 public String getModelProviderId() {
98 return modelProviderId;
99 }
100
101
104 public ImageDescriptor getImageDescriptor() {
105 if (imageDescriptor != null)
106 return imageDescriptor;
107 String iconName = configElement.getAttribute(ATT_ICON);
108 if (iconName == null)
109 return null;
110 imageDescriptor = TeamUIPlugin.getImageDescriptorFromExtension(configElement.getDeclaringExtension(), iconName);
111 return imageDescriptor;
112 }
113
114
117 public IPreferencePage createPreferencePage() throws CoreException {
118 if (configElement.getAttribute(ATT_PREFERENCE_PAGE) == null)
119 return null;
120 Object obj = RegistryReader.createExtension(configElement, ATT_PREFERENCE_PAGE);
121 return (IPreferencePage) obj;
122 }
123
124
127 public boolean isEnabled() {
128 if (!hasPreferences()) {
129 return true;
130 }
131 return getPreferences().getBoolean(PREF_ENABLED, true);
132 }
133
134 public void setEnabled(boolean enable) {
135 if (isEnabled() != enable) {
136 getPreferences().putBoolean(PREF_ENABLED, enable);
137 flushPreferences();
138 }
139 }
140
141 public Preferences getParentPreferences() {
142 return TeamUIPlugin.getPlugin().getInstancePreferences().node(PREF_TEAM_CONTENT_DESCRIPTORS);
143 }
144
147 public Preferences getPreferences() {
148 if (!hasPreferences()) {
149 ensurePreferencesStored();
150 }
151 return internalGetPreferences();
152 }
153
154 private Preferences internalGetPreferences() {
155 return getParentPreferences().node(getPreferenceName());
156 }
157
158 private boolean hasPreferences() {
159 try {
160 return getParentPreferences().nodeExists(getPreferenceName());
161 } catch (BackingStoreException e) {
162 TeamUIPlugin.log(IStatus.ERROR, NLS.bind("Error accessing team content preference store for {0}", new String [] { getModelProviderId() }), e); return false;
164 }
165 }
166
167
173 private String getPreferenceName() {
174 return getModelProviderId();
175 }
176
177 public void storePreferences() {
178 Preferences prefs = internalGetPreferences();
179 prefs.putBoolean(PREF_ENABLED, true);
181 flushPreferences();
182 }
183
184 private void flushPreferences() {
185 try {
186 internalGetPreferences().flush();
187 } catch (BackingStoreException e) {
188 TeamUIPlugin.log(IStatus.ERROR, NLS.bind("Error flushing team content preference store for {0}", new String [] { getModelProviderId() }), e); }
190 }
191
192 private void ensurePreferencesStored() {
193 if (!hasPreferences()) {
194 storePreferences();
195 }
196 }
197
198 public String getName() {
199 if (contentProviderName != null)
200 return contentProviderName;
201
202 return null;
203 }
204
205
208 public boolean isFlatLayoutSupported() {
209 return supportsFlatLayout;
210 }
211 }
212 |
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