|
1
11 package org.eclipse.ui.internal.registry;
12
13 import java.util.ArrayList  ;
14 import java.util.Collection ;
15 import java.util.HashMap ;
16 import java.util.Iterator ;
17 import java.util.List ;
18
19 import org.eclipse.core.runtime.Assert;
20 import org.eclipse.core.runtime.IConfigurationElement;
21 import org.eclipse.core.runtime.IExtension;
22 import org.eclipse.core.runtime.IExtensionPoint;
23 import org.eclipse.core.runtime.Platform;
24 import org.eclipse.core.runtime.dynamichelpers.ExtensionTracker;
25 import org.eclipse.core.runtime.dynamichelpers.IExtensionChangeHandler;
26 import org.eclipse.core.runtime.dynamichelpers.IExtensionTracker;
27 import org.eclipse.ui.PlatformUI;
28 import org.eclipse.ui.dialogs.IWorkingSetPage;
29
30
33 public class WorkingSetRegistry implements IExtensionChangeHandler {
34 private static final String DEFAULT_PAGE_ID = "org.eclipse.ui.resourceWorkingSetPage";
38 private HashMap workingSetDescriptors = new HashMap ();
39
40
43 public WorkingSetRegistry() {
44 IExtensionTracker tracker = PlatformUI.getWorkbench()
45 .getExtensionTracker();
46 tracker.registerHandler(this, ExtensionTracker
47 .createExtensionPointFilter(getExtensionPointFilter()));
48
49 }
50
51
56 private IExtensionPoint getExtensionPointFilter() {
57 return Platform.getExtensionRegistry().getExtensionPoint(
58 PlatformUI.PLUGIN_ID,
59 IWorkbenchRegistryConstants.PL_WORKINGSETS);
60 }
61
62
68 public void addWorkingSetDescriptor(WorkingSetDescriptor descriptor) {
69 Assert.isTrue(!workingSetDescriptors.containsValue(descriptor),
70 "working set descriptor already registered"); IExtensionTracker tracker = PlatformUI.getWorkbench()
72 .getExtensionTracker();
73 tracker.registerObject(descriptor.getConfigurationElement()
74 .getDeclaringExtension(), descriptor,
75 IExtensionTracker.REF_WEAK);
76 workingSetDescriptors.put(descriptor.getId(), descriptor);
77 }
78
79
84 public IWorkingSetPage getDefaultWorkingSetPage() {
85 WorkingSetDescriptor descriptor = (WorkingSetDescriptor) workingSetDescriptors
87 .get(DEFAULT_PAGE_ID);
88
89 if (descriptor != null) {
90 return descriptor.createWorkingSetPage();
91 }
92 return null;
93 }
94
95
101 public WorkingSetDescriptor getWorkingSetDescriptor(String pageId) {
102 return (WorkingSetDescriptor) workingSetDescriptors.get(pageId);
103 }
104
105
110 public WorkingSetDescriptor[] getWorkingSetDescriptors() {
111 return (WorkingSetDescriptor[]) workingSetDescriptors.values().toArray(
112 new WorkingSetDescriptor[workingSetDescriptors.size()]);
113 }
114
115
122 public WorkingSetDescriptor[] getNewPageWorkingSetDescriptors() {
123 Collection descriptors= workingSetDescriptors.values();
124 List result= new ArrayList (descriptors.size());
125 for (Iterator iter= descriptors.iterator(); iter.hasNext();) {
126 WorkingSetDescriptor descriptor= (WorkingSetDescriptor)iter.next();
127 if (descriptor.getPageClassName() != null) {
128 result.add(descriptor);
129 }
130 }
131 return (WorkingSetDescriptor[])result.toArray(new WorkingSetDescriptor[result.size()]);
132 }
133
134
140 public boolean hasNewPageWorkingSetDescriptor() {
141 Collection descriptors= workingSetDescriptors.values();
142 for (Iterator iter= descriptors.iterator(); iter.hasNext();) {
143 WorkingSetDescriptor descriptor= (WorkingSetDescriptor)iter.next();
144 if (descriptor.getPageClassName() != null) {
145 return true;
146 }
147 }
148 return false;
149 }
150
151 public WorkingSetDescriptor[] getUpdaterDescriptorsForNamespace(
152 String namespace) {
153 Collection descriptors = workingSetDescriptors.values();
154 List result = new ArrayList ();
155 for (Iterator iter = descriptors.iterator(); iter.hasNext();) {
156 WorkingSetDescriptor descriptor = (WorkingSetDescriptor) iter
157 .next();
158 if (namespace.equals(descriptor.getUpdaterNamespace())) {
159 result.add(descriptor);
160 }
161 }
162 return (WorkingSetDescriptor[]) result
163 .toArray(new WorkingSetDescriptor[result.size()]);
164 }
165
166 public WorkingSetDescriptor[] getElementAdapterDescriptorsForNamespace(
167 String namespace) {
168 Collection descriptors = workingSetDescriptors.values();
169 List result = new ArrayList ();
170 for (Iterator iter = descriptors.iterator(); iter.hasNext();) {
171 WorkingSetDescriptor descriptor = (WorkingSetDescriptor) iter
172 .next();
173 if (namespace.equals(descriptor.getDeclaringNamespace())) {
174 result.add(descriptor);
175 }
176 }
177 return (WorkingSetDescriptor[]) result
178 .toArray(new WorkingSetDescriptor[result.size()]);
179 }
180
181
187 public IWorkingSetPage getWorkingSetPage(String pageId) {
188 WorkingSetDescriptor descriptor = (WorkingSetDescriptor) workingSetDescriptors
189 .get(pageId);
190
191 if (descriptor == null) {
192 return null;
193 }
194 return descriptor.createWorkingSetPage();
195 }
196
197
200 public void load() {
201 WorkingSetRegistryReader reader = new WorkingSetRegistryReader();
202 reader.readWorkingSets(Platform.getExtensionRegistry(), this);
203 }
204
205
208 public void addExtension(IExtensionTracker tracker, IExtension extension) {
209 WorkingSetRegistryReader reader = new WorkingSetRegistryReader(this);
210 IConfigurationElement[] elements = extension.getConfigurationElements();
211 for (int i = 0; i < elements.length; i++) {
212 reader.readElement(elements[i]);
213 }
214 }
215
216
219 public void removeExtension(IExtension extension, Object [] objects) {
220 for (int i = 0; i < objects.length; i++) {
221 if (objects[i] instanceof WorkingSetDescriptor) {
222 WorkingSetDescriptor desc = (WorkingSetDescriptor) objects[i];
223 workingSetDescriptors.remove(desc.getId());
224 }
225 }
226 }
227 }
228 |
Popular Tags |
Java API By Example, From Geeks To Geeks.