?? personnode.java
字號:
import javax.swing.tree.*;
/** This class forces "male" nodes to have leaf icons and
forbids male childbaring ability */
public class PersonNode extends DefaultMutableTreeNode {
public PersonNode(PersonalInfo info) {
super(info);
}
/** Override a few methods... */
public boolean isLeaf() {
//Note: Male == true;
return ((PersonalInfo) getUserObject()).isMale();
}
public boolean getAllowsChildren() {
//Note: Male == true;
return !((PersonalInfo) getUserObject()).isMale();
}
public void add(DefaultMutableTreeNode child) {
super.add(child);
//System.out.println(child + " added to " + this);
PersonalInfo childPI = (PersonalInfo) ((PersonNode) child).getUserObject();
PersonalInfo oldParent = childPI.getParent();
//if (parent != null) oldParent.remove(childPI);
PersonalInfo newParent = (PersonalInfo) getUserObject();
newParent.add(childPI);
}
public void remove(DefaultMutableTreeNode child) {
super.remove(child);
//System.out.println(child + " removed from " + this);
PersonalInfo childPI = (PersonalInfo) ((PersonNode) child).getUserObject();
PersonalInfo ParentPI = (PersonalInfo) getUserObject();
if (parent != null) ParentPI.remove(childPI);
}
}
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