com.eviware.loadui.ui.fx.util.ExplicitOrdering.java Source code

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Here is the source code for com.eviware.loadui.ui.fx.util.ExplicitOrdering.java

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/*
 * Copyright 2013 SmartBear Software
 * 
 * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by the European Commission - subsequent
 * versions of the EUPL (the "Licence");
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at:
 * 
 * http://ec.europa.eu/idabc/eupl
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the Licence is
 * distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the Licence for the specific language governing permissions and limitations
 * under the Licence.
 */
package com.eviware.loadui.ui.fx.util;

import java.util.Comparator;

import javafx.beans.DefaultProperty;
import javafx.beans.InvalidationListener;
import javafx.beans.Observable;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;

import com.google.common.collect.Ordering;

/**
 * Support class for creating Explicit orderings in FXML.
 * 
 * @author dain.nilsson
 * 
 * @param <T>
 */
@DefaultProperty("order")
public class ExplicitOrdering<T> implements Comparator<T> {
    private Ordering<? super T> ordering = Ordering.usingToString();
    private final ObservableList<T> elementsInOrder = FXCollections.observableArrayList();

    public ExplicitOrdering() {
        elementsInOrder.addListener(new InvalidationListener() {
            @Override
            public void invalidated(Observable arg0) {
                ordering = Ordering.explicit(elementsInOrder);
            }
        });
    }

    public ObservableList<T> getOrder() {
        return elementsInOrder;
    }

    @Override
    public int compare(T o1, T o2) {
        return ordering.compare(o1, o2);
    }
}