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/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.text.edits;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
/**
* Text edit to delete a range in a document.
* <p>
* A delete edit is equivalent to <code>ReplaceEdit(
* offset, length, "")</code>.
*
* @since 3.0
*/
public final class DeleteEdit extends TextEdit {
/**
* Constructs a new delete edit.
*
* @param offset the offset of the range to replace
* @param length the length of the range to replace
*/
public DeleteEdit(int offset, int length) {
super(offset, length);
}
/*
* Copy constructor
*/
private DeleteEdit(DeleteEdit other) {
super(other);
}
/* non Java-doc
* @see TextEdit#doCopy
*/
protected TextEdit doCopy() {
return new DeleteEdit(this);
}
/* (non-Javadoc)
* @see TextEdit#accept0
*/
protected void accept0(TextEditVisitor visitor) {
boolean visitChildren = visitor.visit(this);
if (visitChildren) {
acceptChildren(visitor);
}
}
/* non Java-doc
* @see TextEdit#performDocumentUpdating
*/
/* package */ int performDocumentUpdating(IDocument document) throws BadLocationException {
document.replace(getOffset(), getLength(), ""); //$NON-NLS-1$
fDelta= -getLength();
return fDelta;
}
/* non Java-doc
* @see TextEdit#deleteChildren
*/
/* package */ boolean deleteChildren() {
return true;
}
}
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