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