com.java33.vizpres.client.view.cell.BarCell.java Source code

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Here is the source code for com.java33.vizpres.client.view.cell.BarCell.java

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/*
 * Copyright (c) 2011 Jon Buffington. All rights reserved.
 *
 * 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.java33.vizpres.client.view.cell;

import com.google.gwt.cell.client.AbstractCell;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.java33.vizpres.shared.model.PercentValue;

/**
 * Is a custom cell that uses an horizontal bar to display a percentage
 * using a filled DIV element.
 *
 * @author Jon Buffington
 */
public class BarCell extends AbstractCell<PercentValue> {
    /**
     * {@inheritDoc}
     */
    @Override
    public void render(final Context context, final PercentValue value, final SafeHtmlBuilder sb) {
        final int percentage = value.percentage;
        if (percentage >= 0 && percentage <= 100) {
            final StringBuilder tags = new StringBuilder("<div class='java33-barCell' style='width: ")
                    .append(percentage).append("%;'>").append(percentage).append("</div>");
            sb.appendHtmlConstant(tags.toString());
        } else {
            sb.appendHtmlConstant("<p><strong>Value is out-of-range.</strong></p>");
        }
    }
}