1 package org.simantics.help.ui;
3 import java.io.PrintWriter;
4 import java.io.StringWriter;
6 import org.eclipse.core.runtime.CoreException;
7 import org.eclipse.core.runtime.IProgressMonitor;
8 import org.eclipse.jface.operation.IRunnableContext;
9 import org.eclipse.jface.text.Document;
10 import org.eclipse.jface.text.IDocument;
11 import org.eclipse.jface.text.source.IAnnotationModel;
12 import org.eclipse.ui.texteditor.AbstractDocumentProvider;
13 import org.simantics.Simantics;
14 import org.simantics.databoard.Bindings;
15 import org.simantics.db.ReadGraph;
16 import org.simantics.db.Resource;
17 import org.simantics.db.WriteGraph;
18 import org.simantics.db.common.request.UniqueRead;
19 import org.simantics.db.common.request.WriteRequest;
20 import org.simantics.db.exception.DatabaseException;
21 import org.simantics.db.layer0.util.Layer0Utils;
22 import org.simantics.help.core.HelpUtils;
23 import org.simantics.layer0.Layer0;
24 import org.simantics.ui.workbench.IResourceEditorInput;
25 import org.simantics.utils.logging.TimeLogger;
27 public class HelpFileDocumentProvider extends AbstractDocumentProvider {
29 private Resource resource;
30 private String currentText;
31 private boolean errorHappened;
34 protected IDocument createDocument(Object element) throws CoreException {
35 IResourceEditorInput input = (IResourceEditorInput) element;
36 resource = input.getResource();
38 return Simantics.getSession().syncRequest(new UniqueRead<Document>() {
40 public Document perform(ReadGraph graph) throws DatabaseException {
41 currentText = HelpUtils.readHelpFileContents(graph, resource);
42 errorHappened = false;
43 return new Document(currentText != null ? currentText : "");
46 } catch (DatabaseException e) {
47 StringWriter sw = new StringWriter();
48 PrintWriter pw = new PrintWriter(sw);
49 e.printStackTrace(pw);
51 return new Document(sw.toString());
56 protected IAnnotationModel createAnnotationModel(Object element) throws CoreException {
61 protected void doSaveDocument(IProgressMonitor monitor, Object element, IDocument document, boolean overwrite) throws CoreException {
62 TimeLogger.resetTimeAndLog("HelpFileDocumentProvider.doSaveDocument");
63 currentText = document.get();
64 Simantics.getSession().asyncRequest(new WriteRequest() {
66 public void perform(WriteGraph graph) throws DatabaseException {
67 graph.markUndoPoint();
68 HelpUtils.saveHelpFileContents(graph, resource, currentText);
69 Layer0Utils.addCommentMetadata(graph, "Saved SCL Module " + graph.getRelatedValue2(resource, Layer0.getInstance(graph).HasName, Bindings.STRING));
75 protected IRunnableContext getOperationRunner(IProgressMonitor monitor) {
80 public boolean isModifiable(Object element) {
81 return !errorHappened;
85 public boolean isReadOnly(Object element) {
90 public boolean canSaveDocument(Object element) {
91 return !errorHappened && !getDocument(element).get().equals(currentText);