com.google.developers.gdgfirenze.admin.client.cell.SensorCell.java Source code

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Here is the source code for com.google.developers.gdgfirenze.admin.client.cell.SensorCell.java

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/*
 * Copyright 2013, Cristiano Costantini, Giuseppe Gerla, Michele Ficarra, Sergio Ciampi, Stefano
 * Cigheri.
 * 
 * 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.developers.gdgfirenze.admin.client.cell;

import com.google.developers.gdgfirenze.admin.client.icon.IconBundle;
import com.google.developers.gdgfirenze.model.Sensor;

import com.google.gwt.cell.client.AbstractCell;
import com.google.gwt.core.client.GWT;
import com.google.gwt.i18n.shared.DateTimeFormat;
import com.google.gwt.i18n.shared.DateTimeFormat.PredefinedFormat;
import com.google.gwt.resources.client.ImageResource;
import com.google.gwt.resources.client.ResourcePrototype;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.user.client.ui.Image;

/**
 * The Class SensorCell.
 */
public class SensorCell extends AbstractCell<Sensor> {

    /** The Constant df. */
    private static final DateTimeFormat df = DateTimeFormat.getFormat(PredefinedFormat.DATE_TIME_SHORT);

    /** The Constant ICON_BUNDLE. */
    public static final IconBundle ICON_BUNDLE = GWT.create(IconBundle.class);

    /**
     * Find icon name.
     * 
     * @param type
     *          the type
     * @return the string
     */
    private String findIconName(String type) {
        try {
            final String[] split = type.split("/");
            return split[split.length - 1];
        } catch (Exception e) {
            return null;
        }
    }

    /*
     * (non-Javadoc)
     * 
     * @see com.google.gwt.cell.client.AbstractCell#render(com.google.gwt.cell.client.Cell.Context,
     * java.lang.Object, com.google.gwt.safehtml.shared.SafeHtmlBuilder)
     */
    @Override
    public void render(Context context, Sensor sensor, SafeHtmlBuilder sb) {

        // Value can be null, so do a null check..
        if (sensor == null) {
            return;
        }

        sb.appendHtmlConstant("<table><tr><td title=\"" + sensor.getId() + "\"><strong>");
        sb.appendEscaped(sensor.getName());
        sb.appendHtmlConstant("</strong>");
        if (sensor.getType() != null) {
            sb.appendHtmlConstant("</td><td>");
            final ResourcePrototype icon = ICON_BUNDLE.getResource(findIconName(sensor.getType()));
            if (icon != null) {
                final Image image = new Image((ImageResource) icon);
                image.setTitle(sensor.getType());
                sb.appendHtmlConstant(image.toString());
            } else {
                sb.appendEscaped(sensor.getType());
            }
        }
        sb.appendHtmlConstant("</td></tr><tr><td style=\"font-size:0.9em;\">");
        sb.appendEscaped(sensor.getDescription());
        if (sensor.getLastSeen() != null || sensor.getLat() != null) {
            sb.appendHtmlConstant("</td></tr><tr><td style=\"font-size:0.9em;\"><dl>");
            if (sensor.getLastSeen() != null) {
                sb.appendHtmlConstant("<dt>Last Seen:</dt><dd>");
                sb.appendEscaped(df.format(sensor.getLastSeen()));
                sb.appendHtmlConstant("</dd>");
            }

            if (sensor.getLat() != null) {
                sb.appendHtmlConstant("<dt>Position:</dt><dd>");
                sb.appendEscaped(sensor.getLat() + "," + sensor.getLng());
                sb.appendHtmlConstant("</dd>");
            }
            sb.appendHtmlConstant("</dl>");
        }

        sb.appendHtmlConstant("</td></td></table>");
    }
}