org.nuiton.jaxx.runtime.swing.Item Maven / Gradle / Ivy
/*
* #%L
* JAXX :: Runtime
* %%
* Copyright (C) 2008 - 2017 CodeLutin
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
package org.nuiton.jaxx.runtime.swing;
import javax.swing.event.SwingPropertyChangeSupport;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.util.ArrayList;
import java.util.List;
// This needs to be split into two classes, Item and TreeItem
/**
* An item in a component such as JComboBox or JTree. The Item
* class corresponds to the <item> tag in JAXX source files.
*/
public class Item {
public static final String LABEL_PROPERTY = "label";
public static final String VALUE_PROPERTY = "value";
public static final String SELECTED_PROPERTY = "selected";
private final String id;
private String label;
private Object value;
private boolean selected;
private List- children;
private Item parent;
private PropertyChangeSupport propertyChangeSupport;
/**
* Creates a new Item. This should only be called from compiled JAXX files.
*
* @param id the item's ID
* @param label the string that should be used to represent the item visually
* @param value the item's actual value
* @param selected
true if the item should be selected by default
*/
public Item(String id, String label, Object value, boolean selected) {
this.id = id;
this.label = label;
this.value = value;
this.selected = selected;
}
/**
* Returns this item's ID.
*
* @return the JAXX ID attribute
*/
public String getId() {
return id;
}
/**
* Returns the string that should be used to represent the item at display time. If null,
* String.valueOf(getValue()) will be used instead.
*
* @return this item's display string
* @see #setLabel
*/
public String getLabel() {
return label;
}
/**
* Sets the item's display string. If null, String.valueOf(getValue()) will be used instead.
*
* @param label the new display string
* @see #getLabel
*/
public void setLabel(String label) {
String oldLabel = this.label;
this.label = label;
firePropertyChange(LABEL_PROPERTY, oldLabel, label);
}
/**
* Returns the item's actual value as it appears in the component's model. The Item itself is not
* visible from the model, only the value.
*
* @return the item's value
* @see #setValue
*/
public Object getValue() {
return value;
}
/**
* Sets the item's value as it appears in the component's model. The Item itself is not
* visible from the model, only the value.
*
* @param value the new value
* @see #getValue
*/
public void setValue(Object value) {
Object oldValue = this.value;
this.value = value;
firePropertyChange(VALUE_PROPERTY, oldValue, value);
}
/**
* Returns true if this item is currently selected. This is a bound property.
*
* @return true if item is selected
* @see #setSelected
*/
public boolean isSelected() {
return selected;
}
/**
* Sets the item's selection state. This is a bound property.
*
* @param selected the new selection state
* @see #isSelected
*/
public void setSelected(boolean selected) {
boolean oldSelected = this.selected;
this.selected = selected;
firePropertyChange(SELECTED_PROPERTY, oldSelected, selected);
}
/**
* Adds a new child node (Items can be nested in trees).
*
* @param item the new child item
*/
public void addChild(Item item) {
if (children == null) {
children = new ArrayList<>();
}
children.add(item);
item.parent = this;
}
/**
* Remove child node a new child node
*
* @param item to remove
*/
public void removeChild(Item item) {
if (children != null) {
children.remove(item);
}
}
/**
* Remove all childs nodes
*
* @param items list of items to remove
*/
public void removeChilds(List- items) {
if (children != null) {
children.removeAll(items);
}
}
/**
* Returns a list of this item's children.
*
* @return a list of all nested child nodes
*/
public List
- getChildren() {
if (children == null) {
children = new ArrayList<>();
}
return children;
}
/**
* Returns the
Item containing this Item, or null for a top-level
* Item.
*
* @return the item parent (or null)
*/
public Item getParent() {
return parent;
}
/**
* Set the parent of this item
*
* @param parent the item parent (or null)
*/
public void setParent(Item parent) {
this.parent = parent;
}
private PropertyChangeSupport getPropertyChangeSupport() {
if (propertyChangeSupport == null) {
propertyChangeSupport = new SwingPropertyChangeSupport(this);
}
return propertyChangeSupport;
}
public void addPropertyChangeListener(PropertyChangeListener listener) {
getPropertyChangeSupport().addPropertyChangeListener(listener);
}
public void addPropertyChangeListener(String property, PropertyChangeListener listener) {
getPropertyChangeSupport().addPropertyChangeListener(property, listener);
}
public void removePropertyChangeListener(PropertyChangeListener listener) {
getPropertyChangeSupport().removePropertyChangeListener(listener);
}
public void removePropertyChangeListener(String property, PropertyChangeListener listener) {
getPropertyChangeSupport().removePropertyChangeListener(property, listener);
}
protected void firePropertyChange(String propertyName, Object oldValue, Object newValue) {
if (propertyChangeSupport != null) {
getPropertyChangeSupport().firePropertyChange(propertyName, oldValue, newValue);
}
}
@Override
public String toString() {
return getClass().getName() + "[" + value + "]";
}
}