forked from LupusNobilis/java-org.hwo
131 lines
2.7 KiB
Java
131 lines
2.7 KiB
Java
package org.hwo.bitfields;
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import java.util.ArrayList;
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import java.util.LinkedList;
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import java.util.List;
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import javax.swing.event.ChangeEvent;
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import javax.swing.event.ChangeListener;
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import org.w3c.dom.Element;
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import org.w3c.dom.Node;
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import org.w3c.dom.NodeList;
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public class BitField {
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private List<Field> fields;
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private List<ChangeListener> changeListeners;
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public BitField()
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{
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this.fields = new ArrayList<Field>();
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initialize();
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}
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public BitField(Element fieldsNode)
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{
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this.fields = new ArrayList<Field>();
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this.initialize();
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this.clear();
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if (fieldsNode != null)
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{
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fieldsFromXML(fieldsNode);
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}
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}
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private void initialize()
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{
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this.changeListeners = new LinkedList<ChangeListener>();
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for (int i=0;i<4;i++)
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this.fields.add(new Field(this, i, 1));
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}
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public void addChangeListener(ChangeListener listener){
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this.changeListeners.add(listener);
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}
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public void removeChangeListener(ChangeListener listener){
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this.changeListeners.remove(listener);
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}
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public void fireStateChanged(){
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ChangeEvent ce = new ChangeEvent(this);
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for (ChangeListener listener: this.changeListeners){
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listener.stateChanged(ce);
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}
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}
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public void fieldsFromXML(Node fieldsNode){
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NodeList fields = ((Element)fieldsNode).getElementsByTagName("Field");
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for (int i=0;i<fields.getLength();i++)
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{
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Element fieldNode = (Element)fields.item(i);
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int start = 0,
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len = 1;
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if (!fieldNode.getAttribute("len").equals(""))
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len = Integer.decode(fieldNode.getAttribute("len"));
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if (!fieldNode.getAttribute("start").equals(""))
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start = Integer.decode(fieldNode.getAttribute("start"));
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this.fields.add(new Field(this,start,len,fieldNode.getTextContent()));
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}
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}
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public synchronized String toText(Integer value)
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{
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StringBuilder sb = new StringBuilder();
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if (value != null)
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{
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for (Field field:this.fields)
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{
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String st = field.toText(value);
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if (st != null)
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{
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if (sb.length() > 0)
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sb.append(", ");
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sb.append(st);
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}
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}
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}
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return sb.toString();
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}
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public Field[] getFields()
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{
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return this.fields.toArray(new Field[0]);
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}
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public void clear(){
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this.fields.clear();
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}
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public void addField(Field field){
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this.fields.add(field);
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}
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public void removeField(Field field){
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this.fields.remove(field);
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}
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public void initialize32Bit(){
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this.clear();
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for (int i=0;i<4;i++)
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this.fields.add(new Field(this, i, 1));
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}
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/* public synchronized void setValue(int value,int start,int len)
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{
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if (this.value == null)
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this.value = 0;
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this.value &= ~((-1 >> (Integer.SIZE - len)) << start);
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this.value |= (value & (-1 >> (Integer.SIZE - len))) << start;
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}
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*/
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}
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