/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.openjpa.trader.client;
import com.google.gwt.i18n.client.NumberFormat;
import com.google.gwt.user.client.ui.HTML;
/**
* A set of static utilities to create decorated HTML labels for price and price changes.
*
* @author Pinaki Poddar
*
*/
public class FormatUtil {
public static final NumberFormat priceFormat = NumberFormat.getFormat("#,##0.00");
public static final NumberFormat changeFormat = NumberFormat.getFormat("+#,##0.00;-#,##0.00");
public static final NumberFormat volumeFormat = NumberFormat.getFormat("#,##0");
/**
* Creates a HTML for the formatted price without any style.
*/
public static HTML formatPrice(double price) {
return formatPrice(price, false);
}
/**
* Creates a HTML label for the formatted price with a style based on the signum of the price.
* The positive and negative values are formatted with CSS styles <code>positive</code> and
* <code>negative</code> respectively.
*/
public static HTML formatPrice(double price, boolean style) {
HTML label = new HTML();
label.setText(priceFormat.format(price));
if (style)
label.addStyleName(price >= 0 ? "positive" : "negative");
return label;
}
/**
* Creates a HTML label for the given integer.
*/
public static HTML formatVolume(int volume) {
HTML label = new HTML();
label.setText(volumeFormat.format(volume));
return label;
}
/**
* Creates a HTML label for the difference of two given numbers and applies style based
* on the sign of the difference. Optionally adds percentage change.
*
* @param p1 first value
* @param p2 second value
* @param pct if true, adds a percentage change
*/
public static HTML formatChange(double p1, double p2, boolean pct) {
String raw = changeFormat.format(p1-p2);
if (pct && p1 != 0) {
double delta = p1 - p2;
String pctraw = changeFormat.format(100*delta/p1)+"%";
raw += " (" + pctraw + ")";
}
String style = p1 >= p2 ? "positive" : "negative";
HTML html = new HTML();
html.setText(raw);
html.addStyleName(style);
return html;
}
/**
* Creates a HTML label for the given value and applies style based on the sign.
*/
public static HTML formatChange(double c) {
HTML html = new HTML();
String raw = changeFormat.format(c);
String style = c >= 0 ? "positive" : "negative";
html.setText(raw);
html.addStyleName(style);
return html;
}
}