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1
11 package org.eclipse.pde.internal.core;
12
13 import java.io.File  ;
14 import java.io.Serializable ;
15 import java.util.ArrayList ;
16 import java.util.Collections ;
17 import java.util.List ;
18
19 import javax.xml.parsers.FactoryConfigurationError ;
20 import javax.xml.parsers.ParserConfigurationException ;
21 import javax.xml.parsers.SAXParser ;
22 import javax.xml.parsers.SAXParserFactory ;
23
24 import org.eclipse.core.resources.IResource;
25 import org.eclipse.core.runtime.CoreException;
26 import org.eclipse.core.runtime.IStatus;
27 import org.eclipse.core.runtime.PlatformObject;
28 import org.eclipse.core.runtime.Status;
29 import org.eclipse.pde.core.IModel;
30 import org.eclipse.pde.core.IModelChangedEvent;
31 import org.eclipse.pde.core.IModelChangedListener;
32 import org.eclipse.pde.core.ModelChangedEvent;
33 import org.xml.sax.SAXException ;
34
35 public abstract class AbstractModel extends PlatformObject implements IModel,
36 IModelChangeProviderExtension, Serializable {
37 private transient List fListeners;
38
39 private boolean fLoaded;
40
41 protected boolean fDisposed;
42
43 private long fTimestamp;
44
45 private Exception fException;
46
47 public AbstractModel() {
48 fListeners = Collections.synchronizedList(new ArrayList ());
49 }
50
51 public void addModelChangedListener(IModelChangedListener listener) {
52 fListeners.add(listener);
53 }
54
55 public void transferListenersTo(IModelChangeProviderExtension target,
56 IModelChangedListenerFilter filter) {
57 ArrayList removed = new ArrayList ();
58 for (int i = 0; i < fListeners.size(); i++) {
59 IModelChangedListener listener = (IModelChangedListener) fListeners.get(i);
60 if (filter == null || filter.accept(listener)) {
61 target.addModelChangedListener(listener);
62 removed.add(listener);
63 }
64 }
65 fListeners.removeAll(removed);
66 }
67
68 public void dispose() {
69 fDisposed = true;
70 }
71
72 public void fireModelChanged(IModelChangedEvent event) {
73 IModelChangedListener[] list = (IModelChangedListener[]) fListeners
74 .toArray(new IModelChangedListener[fListeners.size()]);
75 for (int i = 0; i < list.length; i++) {
76 IModelChangedListener listener = list[i];
77 listener.modelChanged(event);
78 }
79 }
80
81 public void fireModelObjectChanged(Object object, String property, Object oldValue,
82 Object newValue) {
83 fireModelChanged(new ModelChangedEvent(this, object, property, oldValue, newValue));
84 }
85
86 public String getResourceString(String key) {
87 return key;
88 }
89
90 public IResource getUnderlyingResource() {
91 return null;
92 }
93
94 protected boolean isInSync(File localFile) {
95 return localFile.exists() && localFile.lastModified() == getTimeStamp();
96 }
97
98 public boolean isValid() {
99 return !isDisposed() && isLoaded();
100 }
101
102 public final long getTimeStamp() {
103 return fTimestamp;
104 }
105
106 protected abstract void updateTimeStamp();
107
108 protected void updateTimeStamp(File localFile) {
109 if (localFile.exists())
110 fTimestamp = localFile.lastModified();
111 }
112
113 public boolean isDisposed() {
114 return fDisposed;
115 }
116
117 public boolean isLoaded() {
118 return fLoaded;
119 }
120
121 public void setLoaded(boolean loaded) {
122 fLoaded = loaded;
123 }
124
125 public void setException(Exception e) {
126 fException = e;
127 }
128
129 public Exception getException() {
130 return fException;
131 }
132
133 public void removeModelChangedListener(IModelChangedListener listener) {
134 fListeners.remove(listener);
135 }
136
137 public void throwParseErrorsException(Throwable e) throws CoreException {
138 Status status = new Status(IStatus.ERROR, PDECore.PLUGIN_ID, IStatus.OK,
139 "Error in the manifest file", e);
141 throw new CoreException(status);
142 }
143
144 protected SAXParser getSaxParser() throws ParserConfigurationException , SAXException ,
145 FactoryConfigurationError {
146 return SAXParserFactory.newInstance().newSAXParser();
147 }
148
149
154 public boolean isReconcilingModel() {
155 return false;
156 }
157
158 }
159 |
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