|
What this is
This file is included in the DevDaily.com
"Java Source Code
Warehouse" project. The intent of this project is to help you "Learn
Java by Example" TM.
Other links
The source code
/*
* Sun Public License Notice
*
* The contents of this file are subject to the Sun Public License
* Version 1.0 (the "License"). You may not use this file except in
* compliance with the License. A copy of the License is available at
* http://www.sun.com/
*
* The Original Code is NetBeans. The Initial Developer of the Original
* Code is Sun Microsystems, Inc. Portions Copyright 1997-2003 Sun
* Microsystems, Inc. All Rights Reserved.
*/
package org.netbeans.editor;
import javax.swing.text.Document;
import javax.swing.text.AbstractDocument;
import javax.swing.text.Element;
import javax.swing.text.AttributeSet;
import javax.swing.text.Position;
/**
* Line element implementation.
* The implementation consist of only one backward bias mark.
* There is a link to next mark to satisfy
* {@link javax.swing.text.Element#getEndOffset()}.
* This way allows to have just three objects
* (element, element-finalizer, mark) per line of text
* compared to seven (element, 2 * (position, position-finalizer, mark))
* in regular leaf element.
*
* @author Miloslav Metelka
* @version 1.00
*/
final class LineElement implements Element, Position {
/** Parent and root element */
private LineRootElement root;
/** Position at the begining of the line */
private Position startPos;
/** Next line or null if this is the last line. */
private Position endPos;
/** Attributes of this line element */
private AttributeSet attributes;
private Syntax.StateInfo syntaxStateInfo;
LineElement(LineRootElement root, Position startPos, Position endPos) {
assert(startPos != null);
assert(endPos != null);
this.root = root;
this.startPos = startPos;
this.endPos = endPos;
}
public Document getDocument() {
return root.getDocument();
}
public int getOffset() {
return getStartOffset();
}
public int getStartOffset() {
return startPos.getOffset();
}
Position getStartPosition() {
return startPos;
}
public int getEndOffset() {
return endPos.getOffset();
}
Position getEndPosition() {
return endPos;
}
public Element getParentElement() {
return root;
}
public String getName() {
return AbstractDocument.ParagraphElementName;
}
public AttributeSet getAttributes() {
return attributes;
}
public void setAttributes(AttributeSet attributes) {
this.attributes = attributes;
}
public int getElementIndex(int offset) {
return -1;
}
public int getElementCount() {
return 0;
}
public Element getElement(int index) {
return null;
}
public boolean isLeaf() {
return true;
}
Syntax.StateInfo getSyntaxStateInfo() {
return syntaxStateInfo;
}
void updateSyntaxStateInfo(Syntax syntax) {
if (syntaxStateInfo == null) {
syntaxStateInfo = syntax.createStateInfo();
assert (syntaxStateInfo != null);
}
syntax.storeState(syntaxStateInfo);
}
void clearSyntaxStateInfo() {
syntaxStateInfo = null;
}
public String toString() {
return "getStartOffset()=" + getStartOffset() // NOI18N
+ ", getEndOffset()=" + getEndOffset() // NOI18N
+ ", syntaxStateInfo=" + getSyntaxStateInfo(); // NOI18N
}
}
|