com.google.gwt.cell.client.NumberCell Maven / Gradle / Ivy
/*
* Copyright 2010 Google Inc.
*
* Licensed 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 com.google.gwt.cell.client;
import com.google.gwt.i18n.client.NumberFormat;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.text.shared.SafeHtmlRenderer;
import com.google.gwt.text.shared.SimpleSafeHtmlRenderer;
/**
* A {@link Cell} used to render formatted numbers.
*/
public class NumberCell extends AbstractCell {
/**
* The {@link NumberFormat} used to render the number.
*/
private final NumberFormat format;
/**
* The {@link SafeHtmlRenderer} used to render the formatted number as HTML.
*/
private final SafeHtmlRenderer renderer;
/**
* Construct a new {@link NumberCell} using decimal format and a
* {@link SimpleSafeHtmlRenderer}.
*/
public NumberCell() {
this(NumberFormat.getDecimalFormat(), SimpleSafeHtmlRenderer.getInstance());
}
/**
* Construct a new {@link NumberCell} using the given {@link NumberFormat} and
* a {@link SimpleSafeHtmlRenderer}.
*
* @param format the {@link NumberFormat} used to render the number
*/
public NumberCell(NumberFormat format) {
this(format, SimpleSafeHtmlRenderer.getInstance());
}
/**
* Construct a new {@link NumberCell} using decimal format and the given
* {@link SafeHtmlRenderer}.
*
* @param renderer the {@link SafeHtmlRenderer} used to render the formatted
* number as HTML
*/
public NumberCell(SafeHtmlRenderer renderer) {
this(NumberFormat.getDecimalFormat(), renderer);
}
/**
* Construct a new {@link NumberCell} using the given {@link NumberFormat} and
* a {@link SafeHtmlRenderer}.
*
* @param format the {@link NumberFormat} used to render the number
* @param renderer the {@link SafeHtmlRenderer} used to render the formatted
* number as HTML
*/
public NumberCell(NumberFormat format, SafeHtmlRenderer renderer) {
if (format == null) {
throw new IllegalArgumentException("format == null");
}
if (renderer == null) {
throw new IllegalArgumentException("renderer == null");
}
this.format = format;
this.renderer = renderer;
}
@Override
public void render(Context context, Number value, SafeHtmlBuilder sb) {
if (value != null) {
sb.append(renderer.render(format.format(value)));
}
}
}