/*******************************************************************************
* Copyright (c) 2004, 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
*******************************************************************************/
package org.eclipse.wst.html.core.internal.validate;
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.ITextRegionCollection;
import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionList;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode;
import org.eclipse.wst.xml.core.internal.regions.DOMRegionContext;
final class FMUtil {
public final static int SEG_NONE = 0;
public final static int SEG_WHOLE_TAG = 1;
public final static int SEG_START_TAG = 2;
public final static int SEG_END_TAG = 3;
public final static int SEG_START_TAG_NAME = 4;
public final static int SEG_END_TAG_NAME = 5;
/**
*/
private FMUtil() {
super();
}
/**
*/
public final static Segment getSegment(IDOMNode target, int segType) {
if (target == null)
return new Segment(0, 0);
Segment seg = null;
IStructuredDocumentRegion startTag = null;
IStructuredDocumentRegion endTag = null;
switch (segType) {
case SEG_WHOLE_TAG :
startTag = target.getFirstStructuredDocumentRegion();
if (startTag != null) {
endTag = target.getLastStructuredDocumentRegion();
seg = new Segment(startTag, endTag);
}
else {
int startOffset = target.getStartOffset();
int endOffset = target.getEndOffset();
seg = new Segment(startOffset, endOffset - startOffset);
}
break;
case SEG_START_TAG :
startTag = target.getStartStructuredDocumentRegion();
if (startTag != null) {
seg = new Segment(startTag);
}
else {
seg = new Segment(target.getStartOffset(), 1);
}
break;
case SEG_END_TAG :
endTag = target.getEndStructuredDocumentRegion();
if (endTag != null) {
seg = new Segment(endTag);
}
else {
seg = new Segment(target.getEndOffset(), 1);
}
break;
case SEG_START_TAG_NAME :
startTag = target.getStartStructuredDocumentRegion();
if (startTag != null) {
ITextRegion nameRegion = getNameRegion(startTag);
if (nameRegion != null) {
seg = new Segment(startTag.getStartOffset(nameRegion), nameRegion.getTextLength());
}
}
if (seg == null) {
seg = getSegment(target, SEG_START_TAG);
}
break;
case SEG_END_TAG_NAME :
endTag = target.getEndStructuredDocumentRegion();
if (endTag != null) {
ITextRegion nameRegion = getNameRegion(endTag);
if (nameRegion != null) {
seg = new Segment(endTag.getStartOffset(nameRegion), nameRegion.getTextLength());
}
}
if (seg == null) {
seg = getSegment(target, SEG_END_TAG);
}
break;
case SEG_NONE :
default :
return new Segment(0, 0);
}
return seg;
}
private static ITextRegion getNameRegion(ITextRegionCollection containerRegion) {
ITextRegionList regions = containerRegion.getRegions();
ITextRegion nameRegion = null;
for (int i = 0; i < regions.size(); i++) {
ITextRegion r = regions.get(i);
if (r.getType() == DOMRegionContext.XML_TAG_NAME) {
nameRegion = r;
break;
}
}
return nameRegion ;
}
}