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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.sse.core.internal.provisional.text.IStructuredDocumentRegion;
// base class for an Element's contentmodel
public abstract class CMNode extends DTDNode {
public static final String ANY = DTDCoreMessages._UI_LABEL_CM_NODE_ANY; //$NON-NLS-1$
public static final String CHILDREN = DTDCoreMessages._UI_LABEL_CM_NODE_CHILD_CONTENT; //$NON-NLS-1$
public static final String EMPTY = DTDCoreMessages._UI_LABEL_CM_NODE_EMPTY; //$NON-NLS-1$
public static final String MIXED = DTDCoreMessages._UI_LABEL_CM_NODE_MIX_CONTENT; //$NON-NLS-1$
public static final String PCDATA = DTDCoreMessages._UI_LABEL_CM_NODE_PCDATA; //$NON-NLS-1$
boolean rootElementContent;
public CMNode(DTDFile file, IStructuredDocumentRegion flatNode) {
super(file, flatNode);
}
// this is only valid to ask if the content is a root element content
abstract public String getType();
/**
* Get the value of rootElementContent. This tells us whether this element
* content's parent is a direct decendent of the containing element
*
* @return value of rootElementContent.
*/
public boolean isRootElementContent() {
return rootElementContent;
}
// if this is a root element, change the content to children
// ie . (child1)
public void setChildrenContent(String newChild) {
if (isRootElementContent()) {
if (!newChild.equals("")) { //$NON-NLS-1$
beginRecording(this, DTDCoreMessages._UI_LABEL_CM_NODE_SET_CHILD_CONTENT); //$NON-NLS-1$
replaceText(this, getStartOffset(), getNodeLength(), "(" + newChild + ")"); //$NON-NLS-1$ //$NON-NLS-2$
endRecording(this);
return;
}
if (!getType().equals(CHILDREN)) {
beginRecording(this, DTDCoreMessages._UI_LABEL_CM_NODE_SET_CHILD_CONTENT); //$NON-NLS-1$
if (this instanceof CMBasicNode) {
replaceText(this, getStartOffset(), getNodeLength(), "(newChild)"); //$NON-NLS-1$
}
else {
// now must convert from mixed content to this one. must
// preserve the remaining children
CMGroupNode group = (CMGroupNode) this;
CMNode firstChild = (CMNode) group.getFirstChild();
if (firstChild.getType().equals(PCDATA)) {
group.delete(firstChild);
}
}
endRecording(this);
}
}
}
public void setContent(String content) {
if (isRootElementContent()) {
beginRecording(this, DTDCoreMessages._UI_LABEL_CM_NODE_SET + " " + content + " " + DTDCoreMessages._UI_LABEL_CM_NODE_CONTENT); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
replaceText(this, getStartOffset(), getNodeLength(), content);
endRecording(this);
}
}
// if this is a root element, change the content to mixed
// ie . (#PCDATA, child1)
public void setMixedContent() {
if (isRootElementContent()) {
if (!getType().equals(MIXED)) {
beginRecording(this, DTDCoreMessages._UI_LABEL_CM_NODE_SET_MIX_CONTENT); //$NON-NLS-1$
if (this instanceof CMBasicNode) {
replaceText(this, getStartOffset(), getNodeLength(), "(#PCDATA | newChild)*"); //$NON-NLS-1$
}
else {
// now must convert from children content to this one.
// must
// preserve the children
CMGroupNode group = (CMGroupNode) this;
group.setConnector(CMGroupNode.CHOICE);
group.setOccurrence(CMRepeatableNode.ZERO_OR_MORE);
CMNode firstChild = (CMNode) group.getFirstChild();
if (!firstChild.getType().equals(PCDATA)) {
group.insertChildNode("#PCDATA", 0); //$NON-NLS-1$
}
}
endRecording(this);
}
}
}
/**
* Set the value of rootElementContent.
*
* @param v
* Value to assign to rootElementContent.
*/
public void setRootElementContent(boolean v) {
this.rootElementContent = v;
}
// public void delete()
// {
// if (isRootElementContent())
// {
// // then the superclasses delete will be fine
// super.delete();
// return;
// }
// CMGroupNode parent = (CMGroupNode) getParentNode();
// parent.removeChildNode(this);
// }
}
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