bundles/org.simantics.document.ui/src/org/simantics/document/ui/CSSModuleEditorDocumentProvider.java

   1 package org.simantics.document.ui;
   2
   3 import java.io.PrintWriter;
   4 import java.io.StringWriter;
   5 import java.util.Collections;
   6 import java.util.List;
   7
   8 import org.eclipse.core.runtime.CoreException;
   9 import org.eclipse.core.runtime.IProgressMonitor;
  10 import org.eclipse.jface.operation.IRunnableContext;
  11 import org.eclipse.jface.text.Document;
  12 import org.eclipse.jface.text.IDocument;
  13 import org.eclipse.jface.text.Position;
  14 import org.eclipse.jface.text.source.Annotation;
  15 import org.eclipse.jface.text.source.AnnotationModel;
  16 import org.eclipse.jface.text.source.IAnnotationModel;
  17 import org.eclipse.ui.texteditor.AbstractDocumentProvider;
  18 import org.simantics.Simantics;
  19 import org.simantics.databoard.Bindings;
  20 import org.simantics.db.ReadGraph;
  21 import org.simantics.db.Resource;
  22 import org.simantics.db.WriteGraph;
  23 import org.simantics.db.common.request.ReadRequest;
  24 import org.simantics.db.common.request.UniqueRead;
  25 import org.simantics.db.common.request.WriteRequest;
  26 import org.simantics.db.exception.DatabaseException;
  27 import org.simantics.db.layer0.util.Layer0Utils;
  28 import org.simantics.document.DocumentResource;
  29 import org.simantics.layer0.Layer0;
  30 import org.simantics.scl.compiler.errors.CompilationError;
  31 import org.simantics.scl.compiler.errors.Locations;
  32 import org.simantics.ui.workbench.ResourceEditorInput2;
  33 import org.simantics.utils.logging.TimeLogger;
  34
  35 public class CSSModuleEditorDocumentProvider extends AbstractDocumentProvider {
  36
  37     protected Resource resource;
  38     protected String currentText;
  39     protected boolean errorHappened;
  40
  41     protected AnnotationModel annotationModel = new AnnotationModel();
  42     private final CSSSourceViewerConfiguration sourceViewer;
  43
  44     public CSSModuleEditorDocumentProvider(CSSSourceViewerConfiguration sourceViewer) {
  45         this.sourceViewer = sourceViewer;
  46     }
  47
  48     @Override
  49     protected IDocument createDocument(Object element) throws CoreException {
  50         ResourceEditorInput2 input = (ResourceEditorInput2)element;
  51         resource = input.getResource();
  52         try {
  53             return Simantics.getSession().syncRequest(new UniqueRead<Document>() {
  54                 @Override
  55                 public Document perform(ReadGraph graph) throws DatabaseException {
  56                         DocumentResource DOC = DocumentResource.getInstance(graph);
  57                     currentText = graph.getPossibleRelatedValue(resource, DOC.cssDocument, Bindings.STRING);
  58                     errorHappened = false;
  59                     return new Document(currentText != null ? currentText : ""); //$NON-NLS-1$
  60                 }
  61             });
  62         } catch (DatabaseException e) {
  63             StringWriter sw = new StringWriter();
  64             PrintWriter pw = new PrintWriter(sw);
  65             e.printStackTrace(pw);
  66             errorHappened = true;
  67             return new Document(sw.toString());
  68         }
  69     }
  70
  71     protected void updateAnnotations() {
  72         Simantics.getSession().asyncRequest(new ReadRequest() {
  73             @Override
  74             public void run(ReadGraph graph) throws DatabaseException {
  75                 if (!graph.hasStatement(resource))
  76                     return;
  77                 setAnnotations(Collections.<CompilationError>emptyList());
  78             }
  79         });
  80     }
  81
  82     protected void setAnnotations(List<CompilationError> errors) {
  83         synchronized(annotationModel.getLockObject()) {
  84             annotationModel.removeAllAnnotations();
  85             for(CompilationError error : errors) {
  86                 Annotation annotation = new Annotation("org.eclipse.ui.workbench.texteditor.error", true, //$NON-NLS-1$
  87                         error.description);
  88                 int begin = Locations.beginOf(error.location);
  89                 int end = Locations.endOf(error.location);
  90                 Position position = new Position(begin, end - begin);
  91                 annotationModel.addAnnotation(annotation, position);
  92             }
  93         }
  94     }
  95
  96     boolean annotationsInitialized = false;
  97
  98     @Override
  99     protected IAnnotationModel createAnnotationModel(Object element)
 100             throws CoreException {
 101         if(!annotationsInitialized) {
 102             updateAnnotations();
 103             annotationsInitialized = true;
 104         }
 105         return annotationModel;
 106     }
 107
 108     @Override
 109     protected void doSaveDocument(IProgressMonitor monitor, Object element,
 110             IDocument document, boolean overwrite) throws CoreException {
 111         TimeLogger.resetTimeAndLog("SCLModuleEditorDocumentProvider.doSaveDocument"); //$NON-NLS-1$
 112         currentText = document.get();
 113         Simantics.getSession().asyncRequest(new WriteRequest() {
 114             @Override
 115             public void perform(WriteGraph graph) throws DatabaseException {
 116                 graph.markUndoPoint();
 117                 DocumentResource DOC = DocumentResource.getInstance(graph);
 118                 graph.claimLiteral(resource, DOC.cssDocument, currentText, Bindings.STRING);
 119                 Layer0Utils.addCommentMetadata(graph, "Saved CSS " + graph.getRelatedValue2(resource, Layer0.getInstance(graph).HasName, Bindings.STRING));
 120             }
 121         });
 122     }
 123
 124     @Override
 125     protected IRunnableContext getOperationRunner(IProgressMonitor monitor) {
 126         return null;
 127     }
 128
 129     @Override
 130     public boolean isModifiable(Object element) {
 131         return !errorHappened;
 132     }
 133
 134     @Override
 135     public boolean isReadOnly(Object element) {
 136         return errorHappened;
 137     }
 138
 139 }