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1
11 package org.eclipse.pde.internal.core.feature;
12
13 import java.io.InputStream  ;
14
15 import javax.xml.parsers.SAXParser ;
16
17 import org.eclipse.core.runtime.CoreException;
18 import org.eclipse.pde.core.IModelChangedEvent;
19 import org.eclipse.pde.core.ModelChangedEvent;
20 import org.eclipse.pde.internal.core.AbstractNLModel;
21 import org.eclipse.pde.internal.core.PDECore;
22 import org.eclipse.pde.internal.core.XMLCopyrightHandler;
23 import org.eclipse.pde.internal.core.XMLDefaultHandler;
24 import org.eclipse.pde.internal.core.ifeature.IFeature;
25 import org.eclipse.pde.internal.core.ifeature.IFeatureModel;
26 import org.eclipse.pde.internal.core.ifeature.IFeatureModelFactory;
27 import org.w3c.dom.Document ;
28 import org.w3c.dom.Node ;
29 import org.xml.sax.SAXException ;
30
31 public abstract class AbstractFeatureModel
32 extends AbstractNLModel
33 implements IFeatureModel {
34 protected transient Feature feature;
35 private transient IFeatureModelFactory factory;
36 private boolean enabled = true;
37
38 public AbstractFeatureModel() {
39 super();
40 }
41 public IFeature getFeature() {
42 if (feature == null) {
43 Feature f = new Feature();
44 f.model = this;
45 this.feature = f;
46 }
47 return feature;
48 }
49 public IFeatureModelFactory getFactory() {
50 if (factory == null)
51 factory = new FeatureFactory(this);
52 return factory;
53 }
54 public String getInstallLocation() {
55 return null;
56 }
57 public boolean isEditable() {
58 return true;
59 }
60 public boolean isEnabled() {
61 return enabled;
62 }
63 public void load(InputStream stream, boolean outOfSync) throws CoreException {
64 try {
65 SAXParser parser = getSaxParser();
66 XMLDefaultHandler handler = new XMLDefaultHandler();
67 XMLCopyrightHandler chandler = new XMLCopyrightHandler(handler);
68 parser.setProperty("http://xml.org/sax/properties/lexical-handler", chandler); parser.parse(stream, handler);
70 if (handler.isPrepared()) {
71 processDocument(handler.getDocument());
72 String copyright = chandler.getCopyright();
73 if (copyright != null)
74 feature.setCopyright(copyright);
75 setLoaded(true);
76 if (!outOfSync)
77 updateTimeStamp();
78 }
79 } catch (SAXException e) {
80 } catch (Exception e) {
81 PDECore.logException(e);
82 }
83 }
84
85 public boolean isValid() {
86 if (!isLoaded()) return false;
87 IFeature feature = getFeature();
88 return feature!=null && feature.isValid();
89 }
90
91 private void processDocument(Document doc) {
92 Node rootNode = doc.getDocumentElement();
93 if (feature == null) {
94 feature = new Feature();
95 feature.model = this;
96 } else {
97 feature.reset();
98 }
99 feature.parse(rootNode);
100 }
101 public void reload(InputStream stream, boolean outOfSync)
102 throws CoreException {
103 if (feature != null)
104 feature.reset();
105 load(stream, outOfSync);
106 fireModelChanged(
107 new ModelChangedEvent(this,
108 IModelChangedEvent.WORLD_CHANGED,
109 new Object [] { feature },
110 null));
111 }
112 public void setEnabled(boolean enabled) {
113 this.enabled = enabled;
114 }
115 }
116 |
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