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1
11 package org.eclipse.pde.internal.ui.search;
12
13 import java.io.File  ;
14 import java.io.FileOutputStream ;
15 import java.io.IOException ;
16 import java.io.OutputStream ;
17 import java.io.PrintWriter ;
18 import java.net.MalformedURLException ;
19 import java.net.URL ;
20
21 import org.eclipse.core.resources.IFile;
22 import org.eclipse.core.resources.ResourcesPlugin;
23 import org.eclipse.core.runtime.CoreException;
24 import org.eclipse.jface.action.Action;
25 import org.eclipse.jface.dialogs.MessageDialog;
26 import org.eclipse.osgi.util.NLS;
27 import org.eclipse.pde.core.plugin.IPluginExtensionPoint;
28 import org.eclipse.pde.internal.core.PDECore;
29 import org.eclipse.pde.internal.core.PDEStateHelper;
30 import org.eclipse.pde.internal.core.builders.SchemaTransformer;
31 import org.eclipse.pde.internal.core.ischema.ISchema;
32 import org.eclipse.pde.internal.core.ischema.ISchemaDescriptor;
33 import org.eclipse.pde.internal.core.schema.SchemaDescriptor;
34 import org.eclipse.pde.internal.core.schema.SchemaRegistry;
35 import org.eclipse.pde.internal.ui.PDEPlugin;
36 import org.eclipse.pde.internal.ui.PDEPluginImages;
37 import org.eclipse.pde.internal.ui.PDEUIMessages;
38 import org.eclipse.ui.PartInitException;
39 import org.eclipse.ui.PlatformUI;
40 import org.eclipse.ui.browser.IWebBrowser;
41 import org.eclipse.ui.browser.IWorkbenchBrowserSupport;
42 import org.eclipse.update.core.Utilities;
43
44
45 public class ShowDescriptionAction extends Action {
46 private String fPointID;
47 private ISchema fSchema;
48 private File fPreviewFile;
49 private boolean fForceExternal;
50
51 private static File fTempWorkingDir;
52
53 public ShowDescriptionAction(String pointID) {
54 fPointID = pointID;
55 initialize();
56 }
57
58 public ShowDescriptionAction(IPluginExtensionPoint point) {
59 this(point, false);
60 }
61
62 public ShowDescriptionAction(IPluginExtensionPoint point, boolean forceExternal) {
63 setExtensionPoint(point, point.getFullId());
64 fForceExternal = forceExternal;
65 initialize();
66 }
67
68 public ShowDescriptionAction(IPluginExtensionPoint point, String pointID) {
69 setExtensionPoint(point, pointID);
70 fForceExternal = false;
71 initialize();
72 }
73
74 public ShowDescriptionAction(ISchema schema) {
75 setSchema(schema);
76 initialize();
77 }
78
79 private void initialize() {
80 setImageDescriptor(PDEPluginImages.DESC_DOC_SECTION_OBJ);
81 }
82
83 public void setSchema(ISchema schema) {
84 fSchema = schema;
85 fPointID = schema.getQualifiedPointId();
86 }
87
88 public void setExtensionPoint(IPluginExtensionPoint point, String pointID) {
89 fPointID = pointID;
90 setText(PDEUIMessages.ShowDescriptionAction_label);
91 fSchema = null;
92 }
93
94 public void run() {
95 if (fSchema == null) {
96 IPluginExtensionPoint point = PDEStateHelper.findExtensionPoint(fPointID);
97 URL url = null;
98 if (point != null) {
99 url = SchemaRegistry.getSchemaURL(point);
100 if (url != null) {
101 ISchemaDescriptor desc = new SchemaDescriptor(fPointID, url);
102 fSchema = desc.getSchema(false);
103 }
104 }
105 if (point == null|| url == null || fSchema == null) {
106 showNoSchemaMessage();
107 return;
108 }
109 }
110 showSchemaDocument();
111 }
112
113 private void showNoSchemaMessage() {
114 String title = PDEUIMessages.ShowDescriptionAction_title;
115 String message;
116 if (fPointID == null || fPointID.startsWith("null")) message = PDEUIMessages.ShowDescriptionAction_schemaNotAvail;
118 else
119 message = NLS.bind(PDEUIMessages.ShowDescriptionAction_noPoint_desc, fPointID);
120 MessageDialog.openWarning(PDEPlugin.getActiveWorkbenchShell(), title, message);
121 }
122
123 private void showSchemaDocument() {
124 try {
125 fPreviewFile = getTempPreviewFile();
126 if (fPreviewFile == null)
127 return;
128
129 SchemaTransformer transformer = new SchemaTransformer();
130 OutputStream os = new FileOutputStream (fPreviewFile);
131 PrintWriter printWriter = new PrintWriter (os, true);
132 transformer.transform(fSchema, printWriter);
133 os.flush();
134 os.close();
135 showURL(fPreviewFile, fForceExternal);
136 linkPreviewFileToSchemaFile();
139 } catch (IOException e) {
140 PDEPlugin.logException(e);
141 }
142 }
143
144
148 private File getTempWorkingDir() throws IOException {
149 if (fTempWorkingDir == null) {
150 fTempWorkingDir = Utilities.createWorkingDirectory();
151 }
152 return fTempWorkingDir;
153 }
154
155
158 private File getTempPreviewFile(){
159 File tempWorkingDir = null;
161 try {
162 tempWorkingDir = getTempWorkingDir();
163 } catch (IOException e) {
164 return null;
165 }
166 StringBuffer previewFileName = new StringBuffer ();
168 previewFileName.append("pde_schema_"); previewFileName.append(fSchema.getQualifiedPointId().replace('.', '-'));
170 previewFileName.append("_preview.html"); File previewFile = new File (
172 tempWorkingDir.getPath() +
173 File.separatorChar +
174 previewFileName.toString());
175 if (previewFile.exists() == false) {
178 try {
179 previewFile.createNewFile();
180 } catch (IOException e) {
181 return null;
182 }
183 previewFile.deleteOnExit();
185 }
186
187 return previewFile;
188 }
189
190
193 private void linkPreviewFileToSchemaFile() {
194 if (fPreviewFile == null) {
196 return;
197 }
198 IFile schemaFile = getSchemaFile();
200 if (schemaFile == null) {
202 return;
203 }
204 try {
211 schemaFile.setSessionProperty(
212 PDECore.SCHEMA_PREVIEW_FILE, fPreviewFile);
213 } catch (CoreException e) {
214 }
216 }
217
218
221 private IFile getSchemaFile() {
222 if (fSchema == null) {
224 return null;
225 }
226 File javaSchemaFile = new File (fSchema.getURL().getFile());
228 IFile[] eclipseSchemaFiles =
230 ResourcesPlugin.getWorkspace().getRoot().findFilesForLocationURI(
231 javaSchemaFile.toURI());
232 if (eclipseSchemaFiles.length == 0) {
234 return null;
235 }
236 return eclipseSchemaFiles[0];
237 }
238
239 private void showURL(File file, boolean forceExternal) {
240 try {
241 IWorkbenchBrowserSupport support = PlatformUI.getWorkbench().getBrowserSupport();
242 URL url = file.toURL();
243
244 if (forceExternal) {
245 IWebBrowser browser = support.getExternalBrowser();
246 browser.openURL(url);
247 } else {
248 IWebBrowser browser = support.createBrowser(
249 IWorkbenchBrowserSupport.AS_EDITOR
250 | IWorkbenchBrowserSupport.STATUS,
251 "org.eclipse.pde", fPointID, fPointID); browser.openURL(url);
253 }
254 } catch (MalformedURLException e) {
255 PDEPlugin.logException(e);
256 }
257 catch (PartInitException e) {
258 PDEPlugin.logException(e);
259 }
260 }
261 }
262 |
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