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/**
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* Copyright (C) 2007 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.taxeditor.annotatedlineeditor;
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import java.util.ArrayList;
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import java.util.List;
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import org.apache.log4j.Logger;
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import org.eclipse.jface.text.BadLocationException;
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import org.eclipse.jface.text.Document;
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import org.eclipse.jface.text.DocumentEvent;
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import org.eclipse.jface.text.IDocument;
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import org.eclipse.jface.text.IRegion;
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import org.eclipse.jface.text.ITypedRegion;
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import org.eclipse.jface.text.Region;
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import org.eclipse.jface.text.TypedRegion;
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import org.eclipse.jface.text.rules.FastPartitioner;
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import org.eclipse.jface.text.rules.RuleBasedPartitionScanner;
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/**
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* Separates each line into partitions for the main text - usually the
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* object's title cache - and supplemental text. The supplemental text
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* partition can then be given a different color and / or font style by
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* the editor's presentation reconciler.
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*
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* @author p.ciardelli
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* @created 28.10.2009
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* @version 1.0
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*/
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public class AnnotatedLineEditorPartitioner extends FastPartitioner {
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private static final Logger logger = Logger
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.getLogger(AnnotatedLineEditorPartitioner.class);
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private Document document;
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private LineAnnotationModel model;
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private ILineDisplayStrategy lineDisplayStrategy;
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/**
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* <p>Constructor for AnnotatedLineEditorPartitioner.</p>
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*
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* @param document a {@link org.eclipse.jface.text.Document} object.
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* @param model a {@link eu.etaxonomy.taxeditor.annotatedlineeditor.LineAnnotationModel} object.
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* @param lineDisplayStrategy a {@link eu.etaxonomy.taxeditor.annotatedlineeditor.ILineDisplayStrategy} object.
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*/
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public AnnotatedLineEditorPartitioner(Document document, LineAnnotationModel model, ILineDisplayStrategy lineDisplayStrategy) {
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super(new RuleBasedPartitionScanner(),
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new String[] {ILineDisplayStrategy.SUPPLEMENTAL_TEXT});
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this.document = document;
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this.model = model;
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this.lineDisplayStrategy = lineDisplayStrategy;
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}
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/* (non-Javadoc)
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* @see org.eclipse.jface.text.rules.FastPartitioner#computePartitioning(int, int, boolean)
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*/
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/** {@inheritDoc} */
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@Override
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public ITypedRegion[] computePartitioning(int offset,
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int length, boolean includeZeroLengthPartitions) {
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List<ITypedRegion> regions = new ArrayList<ITypedRegion>();
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try {
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int lines = document.getNumberOfLines(offset, length);
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int startLine = document.getLineOfOffset(offset);
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// Iterate through all affected lines, separating into regions of DEFAULT_CONTENT_TYPE and SUPPLEMENTAL_TEXT
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for (int i = startLine; i < startLine + lines; i++) {
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LineAnnotation annotation = (LineAnnotation) ((LineAnnotationModel) model).getAnnotationAtLine(i, document);
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if (annotation != null) {
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IRegion lineInfo = document.getLineInformation(i);
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String lineText = document.get(lineInfo.getOffset(), lineInfo.getLength());
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String supplementalText = lineDisplayStrategy.getSupplementalText(annotation.getEntity());
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if (supplementalText == null || supplementalText.equals("")) {
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continue;
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}
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if (lineText.contains(supplementalText)) {
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int startSupplementalText = lineText.indexOf(supplementalText) + lineInfo.getOffset();
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if (startSupplementalText > lineInfo.getOffset()) {
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regions.add(new TypedRegion(lineInfo.getOffset(), startSupplementalText - lineInfo.getOffset(),
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IDocument.DEFAULT_CONTENT_TYPE));
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logger.warn("Non supp at " + lineInfo.getOffset() + ", length " + (startSupplementalText - lineInfo.getOffset()));
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}
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regions.add(new TypedRegion(startSupplementalText, supplementalText.length(),
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ILineDisplayStrategy.SUPPLEMENTAL_TEXT));
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logger.warn("Supp at " + startSupplementalText + ", length " + supplementalText.length());
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if (startSupplementalText + supplementalText.length() < lineInfo.getOffset() + lineInfo.getLength()) {
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regions.add(new TypedRegion(startSupplementalText + supplementalText.length(),
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lineInfo.getLength() - startSupplementalText - supplementalText.length(),
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IDocument.DEFAULT_CONTENT_TYPE));
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}
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}
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}
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}
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} catch (BadLocationException e) {
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return super.computePartitioning(offset, length, includeZeroLengthPartitions);
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}
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return (ITypedRegion[]) regions.toArray(new ITypedRegion[regions.size()]);
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}
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/* (non-Javadoc)
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* @see org.eclipse.jface.text.rules.FastPartitioner#documentChanged2(org.eclipse.jface.text.DocumentEvent)
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*/
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/** {@inheritDoc} */
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@Override
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public IRegion documentChanged2(DocumentEvent e) {
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computePartitioning(e.getOffset(), e.getLength());
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return new Region(e.getOffset(), e.getLength());
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// return super.documentChanged2(e);
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}
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}
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