com.ritchey.attendance.client.view.ClickImageCell.java Source code

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Here is the source code for com.ritchey.attendance.client.view.ClickImageCell.java

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package com.ritchey.attendance.client.view;

/*
 * 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.
 */

import com.google.gwt.cell.client.AbstractCell;
import com.google.gwt.resources.client.ImageResource;
import com.google.gwt.safehtml.shared.SafeHtml;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.safehtml.shared.SafeHtmlUtils;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.LoadListener;
import com.google.gwt.user.client.ui.Widget;

/**
 * An {@link AbstractCell} used to render an {@link ImageResource}.
 *
 * <p>
 * This class assumes that the URL returned from ImageResource is safe from
 * script attacks. If you do not generate the ImageResource from a
 * {@link com.google.gwt.resources.client.ClientBundle ClientBundle}, you should
 * use {@link com.google.gwt.safehtml.shared.UriUtils UriUtils} to sanitize the
 * URL before returning it from {@link ImageResource#getURL()}.
 */
public class ClickImageCell extends AbstractCell<String> {

    /**
     * Construct a new ImageResourceCell.
     */
    public ClickImageCell() {
        super("click");
    }

    @Override
    public void render(com.google.gwt.cell.client.Cell.Context context, String value, SafeHtmlBuilder sb) {

        if (value != null) {// 
            SafeHtml html = SafeHtmlUtils.fromTrustedString(
                    "<div style='background:lightgray; min-height: 128px; max-width: 128px; min-width: 128px; text-align: center;'><img alt='No Photo Available' style='vertical-align: middle; width: 128px; height: 128px;' src='"
                            + value + "' /></div>" + "");
            sb.append(html);
        }

    }

}