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

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