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11 package org.eclipse.pde.internal.core.plugin;
12
13 import java.io.IOException  ;
14 import java.io.InputStream ;
15 import java.net.URL ;
16
17 import javax.xml.parsers.FactoryConfigurationError ;
18 import javax.xml.parsers.ParserConfigurationException ;
19 import javax.xml.parsers.SAXParser ;
20
21 import org.eclipse.core.runtime.CoreException;
22 import org.eclipse.osgi.service.resolver.BundleDescription;
23 import org.eclipse.pde.core.IModelChangedEvent;
24 import org.eclipse.pde.core.ModelChangedEvent;
25 import org.eclipse.pde.core.plugin.IExtensions;
26 import org.eclipse.pde.core.plugin.IExtensionsModel;
27 import org.eclipse.pde.core.plugin.IExtensionsModelFactory;
28 import org.eclipse.pde.core.plugin.IPluginAttribute;
29 import org.eclipse.pde.core.plugin.IPluginElement;
30 import org.eclipse.pde.core.plugin.IPluginExtension;
31 import org.eclipse.pde.core.plugin.IPluginExtensionPoint;
32 import org.eclipse.pde.core.plugin.IPluginObject;
33 import org.eclipse.pde.internal.core.AbstractNLModel;
34 import org.eclipse.pde.internal.core.PDEState;
35 import org.xml.sax.SAXException ;
36
37 public abstract class AbstractExtensionsModel
38 extends AbstractNLModel
39 implements IExtensionsModel, IExtensionsModelFactory {
40 protected Extensions fExtensions;
41
42 public IExtensionsModelFactory getFactory() {
43 return this;
44 }
45
46 protected Extensions createExtensions() {
47 Extensions extensions = new Extensions();
48 extensions.setModel(this);
49 return extensions;
50 }
51
52 public IExtensions getExtensions() {
53 return getExtensions(true);
54 }
55 public IExtensions getExtensions(boolean createIfMissing) {
56 if (fExtensions == null && createIfMissing) {
57 fExtensions = createExtensions();
58 setLoaded(true);
59 }
60 return fExtensions;
61 }
62
63 public abstract URL getNLLookupLocation();
64
65 protected URL [] getNLLookupLocations() {
66 URL locations [] = { getNLLookupLocation() };
67 return locations;
68 }
69
70 public synchronized void load(InputStream stream, boolean outOfSync)
71 throws CoreException {
72
73 if (fExtensions == null) {
74 fExtensions = createExtensions();
75 fExtensions.setModel(this);
76 }
77 fExtensions.reset();
78 setLoaded(false);
79 try {
80 SAXParser parser = getSaxParser();
81 PluginHandler handler = new PluginHandler(true);
82 parser.parse(stream, handler);
83 fExtensions.load(handler.getDocumentElement(), handler.getSchemaVersion());
84 setLoaded(true);
85 if (!outOfSync)
86 updateTimeStamp();
87 } catch (ParserConfigurationException e) {
88 } catch (SAXException e) {
89 } catch (FactoryConfigurationError e) {
90 } catch (IOException e) {
91 }
92 }
93
94 public void load(BundleDescription desc, PDEState state) {
95 fExtensions = createExtensions();
96 fExtensions.setModel(this);
97 fExtensions.load(state, desc.getBundleId());
98 updateTimeStamp();
99 setLoaded(true);
100 }
101
102 public void reload(InputStream stream, boolean outOfSync)
103 throws CoreException {
104 load(stream, outOfSync);
105 fireModelChanged(
106 new ModelChangedEvent(this,
107 IModelChangedEvent.WORLD_CHANGED,
108 new Object [] { fExtensions },
109 null));
110 }
111 protected abstract void updateTimeStamp();
112
113 public IPluginAttribute createAttribute(IPluginElement element) {
114 PluginAttribute attribute = new PluginAttribute();
115 attribute.setModel(this);
116 attribute.setParent(element);
117 return attribute;
118 }
119 public IPluginElement createElement(IPluginObject parent) {
120 PluginElement element = new PluginElement();
121 element.setModel(this);
122 element.setParent(parent);
123 return element;
124 }
125 public IPluginExtension createExtension() {
126 PluginExtension extension = new PluginExtension();
127 extension.setParent(getExtensions());
128 extension.setModel(this);
129 return extension;
130 }
131 public IPluginExtensionPoint createExtensionPoint() {
132 PluginExtensionPoint extensionPoint = new PluginExtensionPoint();
133 extensionPoint.setModel(this);
134 extensionPoint.setParent(getExtensions());
135 return extensionPoint;
136 }
137
138 public boolean isValid() {
139 if (!isLoaded()) return false;
140 if (fExtensions==null) return false;
141 return fExtensions.isValid();
142 }
143 }
144 |
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