| /******************************************************************************* |
| * 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 java.util.List; |
| |
| import org.eclipse.swt.graphics.Image; |
| 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; |
| |
| |
| public class ParameterEntityReference extends NamedTopLevelNode { |
| |
| |
| |
| public class StartEndPair { |
| public int startOffset, endOffset; |
| } |
| |
| private Entity cachedEntity = null; |
| |
| public ParameterEntityReference(DTDFile file, IStructuredDocumentRegion flatNode) { |
| super(file, flatNode, DTDRegionTypes.COMMENT_START); |
| } |
| |
| public Entity getEntityObject() { |
| if (cachedEntity != null && !cachedEntity.getName().equals(getReferencedEntity())) { |
| // if we have a cached entity, but the name doesnt match, |
| // null it now, so we perform a lookup |
| cachedEntity = null; |
| } |
| |
| if (cachedEntity == null) { |
| List nodes = getDTDFile().getNodes(); |
| for (int i = 0; i < nodes.size(); i++) { |
| DTDNode node = (DTDNode) nodes.get(i); |
| if (node instanceof Entity) { |
| Entity entity = (Entity) node; |
| if (entity.isParameterEntity() && entity.getName().equals(getReferencedEntity())) { |
| cachedEntity = entity; |
| } |
| } |
| } |
| } |
| return cachedEntity; |
| } |
| |
| public Image getImage() { |
| return DTDCorePlugin.getInstance().getImage(DTDResource.ENTITYREFERENCEICON); |
| } |
| |
| public String getName() { |
| return getStructuredDTDDocumentRegion().getText(); |
| } |
| |
| public String getReferencedEntity() { |
| String text = getName(); |
| return getName().substring(1, text.length() - 1); |
| } |
| |
| private void getStartAndEndOffsetForText(StartEndPair pair) { |
| RegionIterator iter = iterator(); |
| ITextRegion commentStartTag = getStartTag(iter); |
| ITextRegion endCommentTag = getNextRegion(iter, DTDRegionTypes.COMMENT_END); |
| pair.endOffset = getStructuredDTDDocumentRegion().getEndOffset(); |
| if (commentStartTag != null) { |
| pair.startOffset = getStructuredDTDDocumentRegion().getEndOffset(commentStartTag); |
| } |
| if (endCommentTag != null) { |
| pair.endOffset = getStructuredDTDDocumentRegion().getEndOffset(endCommentTag); |
| } |
| } |
| |
| public String getText() { |
| String text = getStructuredDTDDocumentRegion().getText(); |
| int flatNodeStart = getStructuredDTDDocumentRegion().getStartOffset(); |
| StartEndPair pair = new StartEndPair(); |
| getStartAndEndOffsetForText(pair); |
| return text.substring(pair.startOffset - flatNodeStart, pair.endOffset - flatNodeStart); |
| } |
| |
| public void setReferencedEntity(Object requestor, String name) { |
| replaceText(requestor, getStructuredDTDDocumentRegion().getStartOffset(), getStructuredDTDDocumentRegion().getLength(), "%" + name + ";"); //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| |
| public void setReferencedEntity(String name) { |
| beginRecording(this, DTDCoreMessages._UI_LABEL_PARM_ENTITY_REF_CHG_ENTITY_REF); //$NON-NLS-1$ |
| setReferencedEntity(this, name); |
| endRecording(this); |
| } |
| |
| public void setText(String newText) { |
| beginRecording(this, DTDCoreMessages._UI_LABEL_PARM_ENTITY_REF_COMMENT_CHG); //$NON-NLS-1$ |
| StartEndPair pair = new StartEndPair(); |
| getStartAndEndOffsetForText(pair); |
| replaceText(this, pair.startOffset, pair.endOffset - pair.startOffset, newText); |
| endRecording(this); |
| } |
| |
| } |