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/*******************************************************************************
* Copyright (c) 2001, 2004 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.core.internal;
import org.eclipse.wst.dtd.core.internal.parser.DTDRegionTypes;
import org.eclipse.wst.dtd.core.internal.text.RegionIterator;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion;
import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegion;
// interface for nodes that can exist at the top level in a dtdfile
// eg. entity, notation, element, comment, attlist, or unrecognized stuff (ie
// <junk dkfjdl>
public abstract class NamedTopLevelNode extends TopLevelNode {
private String tagStartType;
public NamedTopLevelNode(DTDFile dtdFile, IStructuredDocumentRegion flatNode, String type) {
super(dtdFile, flatNode);
tagStartType = type;
}
public ITextRegion getNameRegion() {
// name region is located after the whitespace (which is after
// the elementtag
RegionIterator iter = iterator();
getNextRegion(iter, tagStartType);
if (!iter.hasNext()) {
return null;
}
ITextRegion region = iter.next();
if (!region.getType().equals(DTDRegionTypes.WHITESPACE)) {
return null;
}
if (!iter.hasNext()) {
return null;
}
region = iter.next();
if (region.getType().equals(DTDRegionTypes.NAME)) {
return region;
}
// we normally stop here, but for entities, we have to see if we are
// at a '%'. if so, we skip that and find the name after the
// whitespace again
if (tagStartType == DTDRegionTypes.ENTITY_TAG && region.getType().equals(DTDRegionTypes.PERCENT) && iter.hasNext()) {
region = iter.next();
if (!region.getType().equals(DTDRegionTypes.WHITESPACE)) {
return null;
}
if (!iter.hasNext()) {
return null;
}
region = iter.next();
if (region.getType().equals(DTDRegionTypes.NAME)) {
return region;
}
}
return null;
}
public ITextRegion getStartTag(RegionIterator iter) {
return getNextRegion(iter, tagStartType);
}
public ITextRegion getWhitespaceAfterName() {
ITextRegion nameRegion = getNameRegion();
RegionIterator iter = iterator();
// skip past the element tag region
getNextRegion(iter, tagStartType);
boolean foundName = false;
while (iter.hasNext()) {
ITextRegion region = iter.next();
if (!foundName && nameRegion != null && region == nameRegion) {
foundName = true;
}
if (region.getType().equals(DTDRegionTypes.WHITESPACE)) {
// there is no name region or we have already passed it
if (nameRegion == null || foundName) {
return region;
}
}
}
return null;
}
public void setName(Object requestor, String name) {
ITextRegion nameRegion = getNameRegion();
if (nameRegion != null) {
super.setName(requestor, name);
}
else {
RegionIterator iter = iterator();
ITextRegion elementTagRegion = getNextRegion(iter, tagStartType);
int replaceLength = 0;
if (iter.hasNext()) {
ITextRegion region = iter.next();
if (region.getType().equals(DTDRegionTypes.WHITESPACE)) {
if (region.getLength() >= 2) {
// there are 2 spaces between 'ELEMENT' and the
// content
// Change replace length to 1 so that the new name and
// the content are separated by a single space
replaceLength = 1;
}
}
}
// beginRecording(requestor, "Name Change");
String newText = " " + name; //$NON-NLS-1$
replaceText(requestor, getStructuredDTDDocumentRegion().getEndOffset(elementTagRegion), replaceLength, newText);
// endRecording(requestor);
}
}
}
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