/*******************************************************************************
* Copyright (c) 2001, 2010 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.xml.ui.internal.contentassist;
import java.util.HashMap;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.Position;
import org.eclipse.jface.text.TextPresentation;
import org.eclipse.jface.text.contentassist.IContextInformation;
import org.eclipse.jface.text.contentassist.IContextInformationPresenter;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyleRange;
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.ITextRegion;
import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionList;
import org.eclipse.wst.sse.ui.internal.contentassist.ContextInformationValidator;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode;
import org.eclipse.wst.xml.core.internal.regions.DOMRegionContext;
/**
* Responsible for the presentation of the context info popup. This includes
* text style, and when the window should close.
*
* @author pavery
*/
public class AttributeContextInformationPresenter extends ContextInformationValidator implements IContextInformationPresenter {
private IContextInformation fInfo = null;
private ContextInfoModelUtil fModelUtil = null;
public AttributeContextInformationPresenter() {
super();
}
/**
* @see org.eclipse.wst.sse.ui.internal.contentassist.ContextInformationValidator#install(org.eclipse.jface.text.contentassist.IContextInformation, org.eclipse.jface.text.ITextViewer, int)
*/
public void install(IContextInformation info, ITextViewer viewer, int documentPosition) {
super.install(info, viewer, documentPosition);
this.fInfo = info;
this.fModelUtil = new ContextInfoModelUtil((IStructuredDocument) viewer.getDocument());
}
/**
* @see org.eclipse.jface.text.contentassist.IContextInformationPresenter#updatePresentation(int,
* org.eclipse.jface.text.TextPresentation)
*/
public boolean updatePresentation(int documentPosition, TextPresentation presentation) {
presentation.clear();
if (!(fInfo instanceof AttributeContextInformation)) {
return false;
}
// iterate existing attributes from current node
IDOMNode xmlNode = fModelUtil.getXMLNode(documentPosition);
if (xmlNode == null)
return false;
IStructuredDocumentRegion sdRegion = xmlNode.getFirstStructuredDocumentRegion();
ITextRegionList regions = sdRegion.getRegions();
ITextRegion r = null;
String attrName = ""; //$NON-NLS-1$
Object temp = null;
Position p = null;
HashMap map = ((AttributeContextInformation) fInfo).getAttr2RangeMap();
// so we can add ranges in order
StyleRange[] sorted = new StyleRange[fInfo.getInformationDisplayString().length()];
for (int i = 0; i < regions.size(); i++) {
r = regions.get(i);
if (r.getType() == DOMRegionContext.XML_TAG_ATTRIBUTE_NAME) {
attrName = sdRegion.getText(r);
temp = map.get(attrName);
if (temp != null) {
p = (Position) temp;
sorted[p.offset] = new StyleRange(p.offset, p.length, null, null, SWT.BOLD);
}
}
}
// style ranges need to be added in order
StyleRange sr = null;
for (int i = 0; i < sorted.length; i++) {
sr = sorted[i];
if (sr != null) {
presentation.addStyleRange(sr);
}
}
return true;
}
}