|
1
11 package org.eclipse.ui.internal.intro.universal;
12
13 import java.io.IOException  ;
14 import java.io.PrintWriter ;
15 import java.io.StringReader ;
16 import java.util.Enumeration ;
17 import java.util.Hashtable ;
18
19 import javax.xml.parsers.DocumentBuilder ;
20 import javax.xml.parsers.DocumentBuilderFactory ;
21 import javax.xml.parsers.ParserConfigurationException ;
22
23 import org.eclipse.core.runtime.IConfigurationElement;
24 import org.eclipse.core.runtime.Platform;
25 import org.eclipse.ui.internal.intro.impl.model.loader.IntroContentParser;
26 import org.eclipse.ui.internal.intro.universal.util.BundleUtil;
27 import org.eclipse.ui.internal.intro.universal.util.Log;
28 import org.osgi.framework.Bundle;
29 import org.w3c.dom.Document ;
30 import org.w3c.dom.Element ;
31 import org.w3c.dom.Node ;
32 import org.w3c.dom.NodeList ;
33 import org.xml.sax.InputSource ;
34 import org.xml.sax.SAXException ;
35 import org.xml.sax.SAXParseException ;
36
37
38 public class IntroData {
39 private String productId;
40 private Hashtable pages=new Hashtable ();
41 private boolean active;
42
43 public IntroData(String productId, String fileNameOrData, boolean active) {
44 this.productId = productId;
45 this.active = active;
46 if (fileNameOrData!=null)
47 initialize(fileNameOrData);
48 }
49
50 public String getProductId() {
51 return productId;
52 }
53
54 public PageData getPage(String pageId) {
55 return (PageData)pages.get(pageId);
56 }
57
58 public boolean isActive() {
59 return active;
60 }
61
62 private void initialize(String fileNameOrData) {
63 Document doc = parse(fileNameOrData);
64 if (doc == null)
65 return;
66 Element root = doc.getDocumentElement();
67 NodeList pages = root.getChildNodes();
68 for (int i = 0; i < pages.getLength(); i++) {
69 Node node = pages.item(i);
70 if (node.getNodeType() == Node.ELEMENT_NODE && node.getNodeName().equals("page")) { loadPage((Element) node);
72 }
73 }
74 }
75
76 private void loadPage(Element page) {
77 PageData pd = new PageData(page);
78 pages.put(pd.getId(), pd);
79 }
80
81 public void addImplicitContent() {
82 IConfigurationElement [] elements = Platform.getExtensionRegistry().getConfigurationElementsFor("org.eclipse.ui.intro.configExtension"); for (int i=0; i<elements.length; i++) {
84 IConfigurationElement element = elements[i];
85 if (element.getName().equals("configExtension")) { String cid = element.getAttribute("configId"); if (cid!=null && cid.equals("org.eclipse.ui.intro.universalConfig")) { addCandidate(element);
89 }
90 }
91 }
92 }
93
94 private void addCandidate(IConfigurationElement element) {
95 String fileName = element.getAttribute("content"); if (fileName==null)
97 return;
98 String bundleId = element.getDeclaringExtension().getNamespaceIdentifier();
99 Bundle bundle = Platform.getBundle(bundleId);
100 if (bundle==null)
101 return;
102 String content = BundleUtil.getResolvedResourceLocation("", fileName, bundle);
104 IntroContentParser parser = new IntroContentParser(content);
105 Document dom = parser.getDocument();
106 if (dom==null)
108 return;
109 Element root = dom.getDocumentElement();
110 Element extension = null;
111 NodeList children = root.getChildNodes();
112 for (int i=0; i<children.getLength(); i++) {
113 Node child = children.item(i);
114 if (child.getNodeType()==Node.ELEMENT_NODE) {
115 Element el = (Element)child;
116 if (el.getNodeName().equalsIgnoreCase("extensionContent")) { extension = el;
118 break;
119 }
120 }
121 }
122 if (extension==null)
123 return;
124 String id = extension.getAttribute("id"); String name = extension.getAttribute("name"); String path = extension.getAttribute("path"); if (id==null || path==null)
128 return;
129 int at = path.lastIndexOf("/@"); if (at == -1)
131 return;
132 if (path.charAt(path.length()-1)!='@')
133 return;
134 String pageId = path.substring(0, at);
135 PageData pd = (PageData)pages.get(pageId);
136 if (pd==null) {
137 pd = new PageData(pageId);
138 pages.put(pageId, pd);
139 }
140 pd.addImplicitExtension(id, name);
141 }
142
143 private Document parse(String fileNameOrData) {
144 Document document = null;
145 try {
146 DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
147 docFactory.setValidating(false);
148 docFactory.setNamespaceAware(true);
150 docFactory.setExpandEntityReferences(false);
151 DocumentBuilder parser = docFactory.newDocumentBuilder();
152
153 if (fileNameOrData.charAt(0)=='<') {
154 StringReader reader = new StringReader (fileNameOrData);
156 document = parser.parse(new InputSource (reader));
157 }
158 else
159 document = parser.parse(fileNameOrData);
160 return document;
161
162 } catch (SAXParseException spe) {
163 StringBuffer buffer = new StringBuffer ("IntroData error in line "); buffer.append(spe.getLineNumber());
165 buffer.append(", uri "); buffer.append(spe.getSystemId());
167 buffer.append("\n"); buffer.append(spe.getMessage());
169
170 Exception x = spe;
172 if (spe.getException() != null)
173 x = spe.getException();
174 Log.error(buffer.toString(), x);
175
176 } catch (SAXException sxe) {
177 Exception x = sxe;
178 if (sxe.getException() != null)
179 x = sxe.getException();
180 Log.error(x.getMessage(), x);
181
182 } catch (ParserConfigurationException pce) {
183 Log.error(pce.getMessage(), pce);
185
186 } catch (IOException ioe) {
187 Log.error(ioe.getMessage(), ioe);
188 }
189 return null;
190 }
191
192 public void write(PrintWriter writer) {
193 writer.println("<?xml version=\"1.0\" encoding=\"utf-8\" ?>"); writer.println("<extensions>"); for (Enumeration keys = pages.keys(); keys.hasMoreElements();) {
196 String id = (String )keys.nextElement();
197 PageData pd = (PageData)pages.get(id);
198 pd.write(writer, " "); }
200 writer.println("</extensions>"); }
202 }
203 |
Popular Tags |
Java API By Example, From Geeks To Geeks.