MinMaxSample.java

package org.javamoney.examples.fxdemo.ext;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Arrays;
import java.util.HashSet;

import javafx.event.ActionEvent;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.HBox;

import javax.money.MonetaryAmount;

import org.javamoney.examples.fxdemo.widgets.AbstractExamplePane;
import org.javamoney.examples.fxdemo.widgets.AbstractSingleSamplePane;
import org.javamoney.examples.fxdemo.widgets.AmountEntry;
import org.javamoney.moneta.Money;
import org.javamoney.moneta.function.MonetaryFunctions;

public class MinMaxSample extends AbstractExamplePane {

	public MinMaxSample() {
		super(new ExamplePane());
		setExampleTitle("Using a monetary extension for min/max.");
		setExampleDescription("This example shows how to use a monetary extension to caluclate in/max for a list of values.");
		setExampleCode(loadExample("/samples/Extensions.javatxt"));
	}

	public final static class ExamplePane extends AbstractSingleSamplePane {

		private HBox exPane = new HBox();
		private AmountEntry amount1 = new AmountEntry("Amount 1");
		private AmountEntry amount2 = new AmountEntry("Amount 2");
		private AmountEntry amount3 = new AmountEntry("Amount 3");

		public ExamplePane() {
			exPane.getChildren().addAll(amount1, amount2, amount3);
			this.inputPane.getChildren().add(exPane);
			AnchorPane.setLeftAnchor(exPane, 10d);
			AnchorPane.setTopAnchor(exPane, 10d);
			Button minButton = new Button("Calculate MIN");
			minButton.setOnAction(new javafx.event.EventHandler<ActionEvent>() {
				public void handle(ActionEvent action) {
					StringWriter sw = new StringWriter();
					PrintWriter pw = new PrintWriter(sw);
					try {
						/*
						MonetaryAmount min =MonetaryFunctions.min()
								.apply(
										new HashSet<MonetaryAmount>(Arrays
												.asList(amount1.getAmount(),
														amount2.getAmount(),
														amount3.getAmount())));
						pw.println("MonetaryAmount (Min)");
						pw.println("--------------------");
						pw.println();
						printSummary(min, pw);
						*/
					} catch (Exception e) {
						e.printStackTrace(pw);
					}
					pw.flush();
					ExamplePane.this.outputArea.setText(sw.toString());
				}

				private void printSummary(MonetaryAmount amount, PrintWriter pw) {
					pw.println("Class: " + amount.getClass().getName());
					if (amount instanceof Money) {
						Money asMoney = (Money) amount;
						pw.println("Value (BD): " + asMoney.getNumber());
						pw.println("Value (double): "
								+ asMoney.getNumber().doubleValue());
						pw.println("Precision: "
								+ asMoney.getNumber().getPrecision());
						pw.println("Scale: " + asMoney.getNumber().getScale());
					}
				}
			});
			Button maxButton = new Button("Calculate MAX");
			maxButton.setOnAction(new javafx.event.EventHandler<ActionEvent>() {
				public void handle(ActionEvent action) {
					StringWriter sw = new StringWriter();
					PrintWriter pw = new PrintWriter(sw);
					try {
						/*
						MonetaryAmount max = MonetaryFunctions.max()
								.apply(
										new HashSet<MonetaryAmount>(Arrays
												.asList(amount1.getAmount(),
														amount2.getAmount(),
														amount3.getAmount())));
						pw.println("MonetaryAmount (Max)");
						pw.println("--------------------");
						pw.println();
						printSummary(max, pw);
						*/
					} catch (Exception e) {
						e.printStackTrace(pw);
					}
					pw.flush();
					ExamplePane.this.outputArea.setText(sw.toString());
				}

				private void printSummary(MonetaryAmount amount, PrintWriter pw) {
					pw.println("Class: " + amount.getClass().getName());
					if (amount instanceof Money) {
						Money asMoney = (Money) amount;
						pw.println("Value (BD): " + asMoney.getNumber());
						pw.println("Value (double): "
								+ asMoney.getNumber().doubleValue());
						pw.println("Precision: "
								+ asMoney.getNumber().getPrecision());
						pw.println("Scale: " + asMoney.getNumber().getScale());
					}
				}
			});
			buttonPane.getChildren().addAll(minButton, new Label(" "),
					maxButton);
		}
	}
}