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/*******************************************************************************
* Copyright (c) 2001, 2008 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Jens Lukowski/Innoopract - initial renaming/restructuring
*
*******************************************************************************/
package org.eclipse.wst.dtd.ui.internal.style;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.ITypedRegion;
import org.eclipse.jface.text.TextAttribute;
import org.eclipse.jface.text.TextUtilities;
import org.eclipse.swt.custom.StyleRange;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.wst.dtd.core.internal.provisional.contenttype.ContentTypeIdForDTD;
import org.eclipse.wst.dtd.core.text.IDTDPartitions;
import org.eclipse.wst.dtd.ui.internal.DTDUIPlugin;
import org.eclipse.wst.sse.core.StructuredModelManager;
import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredPartitioning;
import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegion;
import org.eclipse.wst.sse.ui.internal.preferences.ui.ColorHelper;
import org.eclipse.wst.sse.ui.internal.provisional.style.AbstractLineStyleProvider;
import org.eclipse.wst.sse.ui.internal.provisional.style.LineStyleProvider;
public class LineStyleProviderForDTDSubSet extends AbstractLineStyleProvider implements LineStyleProvider {
private IStructuredModel fInternalModel = null;
private LineStyleProviderForDTD fInternalProvider = null;
private StyleRange[] fInternalRanges;
private String fPartitioning = null;
public LineStyleProviderForDTDSubSet() {
super();
fInternalProvider = new LineStyleProviderForDTD();
fInternalRanges = new StyleRange[0];
fPartitioning = IStructuredPartitioning.DEFAULT_STRUCTURED_PARTITIONING;
}
/**
* @param lineRequestStart
* @param lineRequestLength
* @param holdResults
*/
private void addStyleRanges(int lineRequestStart, int lineRequestLength, Collection holdResults, int adjustment) {
int lineRequestEnd = lineRequestStart + lineRequestLength;
for (int i = 0; i < fInternalRanges.length; i++) {
int adjustedStyleRangeStart = adjustment + fInternalRanges[i].start;
int adjustedStyleRangeEnd = adjustedStyleRangeStart + fInternalRanges[i].length;
if (adjustedStyleRangeEnd < lineRequestStart || lineRequestEnd < adjustedStyleRangeStart)
continue;
int end = Math.min(adjustedStyleRangeEnd, lineRequestEnd);
StyleRange range = new StyleRange();
range.start = Math.max(adjustedStyleRangeStart, lineRequestStart);
range.length = end - range.start;
range.fontStyle = fInternalRanges[i].fontStyle;
range.foreground = fInternalRanges[i].foreground;
range.background = fInternalRanges[i].background;
holdResults.add(range);
}
}
protected TextAttribute getAttributeFor(ITextRegion region) {
TextAttribute ta = null;
String prefString = getColorPreferences().getString(IStyleConstantsDTD.DTD_DEFAULT);
String[] stylePrefs = ColorHelper.unpackStylePreferences(prefString);
if (stylePrefs != null) {
RGB foreground = ColorHelper.toRGB(stylePrefs[0]);
RGB background = ColorHelper.toRGB(stylePrefs[1]);
boolean bold = Boolean.valueOf(stylePrefs[2]).booleanValue();
ta = createTextAttribute(foreground, background, bold);
}
return ta;
}
protected IPreferenceStore getColorPreferences() {
return DTDUIPlugin.getDefault().getPreferenceStore();
}
/**
* @return
*/
private IStructuredDocument getInternalDocument() {
if (fInternalModel == null) {
fInternalModel = StructuredModelManager.getModelManager().createUnManagedStructuredModelFor(ContentTypeIdForDTD.ContentTypeID_DTD);
}
return fInternalModel.getStructuredDocument();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.wst.sse.ui.structured.style.AbstractLineStyleProvider#prepareRegions(org.eclipse.jface.text.ITypedRegion,
* int, int, java.util.Collection)
*/
public boolean prepareRegions(ITypedRegion typedRegion, int lineRequestStart, int lineRequestLength, Collection holdResults) {
if (!IDTDPartitions.DTD_DEFAULT.equals(typedRegion.getType())) {
// compute an internal DTD model and return linestyles for it
ITextRegion dtdContentRegion = null;
IStructuredDocumentRegion doctype = fDocument.getRegionAtCharacterOffset(typedRegion.getOffset());
if (doctype != null)
dtdContentRegion = doctype.getRegionAtCharacterOffset(typedRegion.getOffset());
String contents = dtdContentRegion != null ? doctype.getFullText(dtdContentRegion) : null;
IStructuredDocument document = getInternalDocument();
if (document == null)
return false;
updateStyleRanges(document, contents);
addStyleRanges(lineRequestStart, lineRequestLength, holdResults, doctype.getStartOffset(dtdContentRegion));
return true;
}
return false;
}
public void release() {
super.release();
if (fInternalProvider != null) {
fInternalProvider.release();
}
}
private void updateStyleRanges(IStructuredDocument document, String contents) {
if (!document.get().equals(contents)) {
document.set(contents);
try {
ITypedRegion regions[] = TextUtilities.computePartitioning(getInternalDocument(), fPartitioning, 0, document.getLength(), false);
List ranges = new ArrayList();
fInternalProvider.init(getInternalDocument(), fRecHighlighter);
for (int i = 0; i < regions.length; i++) {
fInternalProvider.prepareRegions(regions[i], regions[i].getOffset(), regions[i].getLength(), ranges);
}
fInternalRanges = (StyleRange[]) ranges.toArray(new StyleRange[0]);
}
catch (BadLocationException e) {
fInternalRanges = new StyleRange[0];
}
}
}
protected void loadColors() {
fInternalProvider.loadColors();
}
}
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