org.overlord.sramp.ui.client.widgets.SimpleFormLayoutPanel.java Source code

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Here is the source code for org.overlord.sramp.ui.client.widgets.SimpleFormLayoutPanel.java

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/*
 * Copyright 2012 JBoss 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 org.overlord.sramp.ui.client.widgets;

import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Element;
import com.google.gwt.user.client.ui.CellPanel;
import com.google.gwt.user.client.ui.InlineLabel;
import com.google.gwt.user.client.ui.Widget;

/**
 * A simple implementation of a form panel.  This panel implementation provides a
 * mechanism to display a list of form controls within a simple tabular layout.  Each
 * form control must be associated with a text label.
 *
 * @author eric.wittmann@redhat.com
 */
public class SimpleFormLayoutPanel extends CellPanel {

    /**
     * Constructor.
     */
    public SimpleFormLayoutPanel() {
        DOM.setElementProperty(getTable(), "cellSpacing", "0");
        DOM.setElementProperty(getTable(), "cellPadding", "0");
        getElement().setClassName("simpleFormPanel");
    }

    /**
     * Called to add a form field to the form panel.
     * @param label
     * @param child
     */
    public void add(String label, Widget child) {
        Element tr = DOM.createTR();
        Element labelTd = DOM.createTD();
        labelTd.setAttribute("align", "right");
        Element widgetTd = DOM.createTD();
        DOM.appendChild(tr, labelTd);
        DOM.appendChild(tr, widgetTd);
        DOM.appendChild(getBody(), tr);

        if (label != null) {
            InlineLabel l = new InlineLabel(label + ":");
            l.setStyleName("label");
            add(l, labelTd);
        }
        add(child, widgetTd);
    }

    /**
     * Called to add a form field to the form panel.  This call creates two new rows
     * with colspan=2 on the td elements.  This is useful for TextAreas, for instance.
     * @param label
     * @param child
     */
    public void addTwoCol(String label, Widget child) {
        Element labelTr = DOM.createTR();
        Element labelTd = DOM.createTD();
        labelTd.setAttribute("colspan", "2");

        Element widgetTr = DOM.createTR();
        Element widgetTd = DOM.createTD();
        widgetTd.setAttribute("colspan", "2");

        DOM.appendChild(labelTr, labelTd);
        DOM.appendChild(widgetTr, widgetTd);

        DOM.appendChild(getBody(), labelTr);
        DOM.appendChild(getBody(), widgetTr);

        if (label != null) {
            InlineLabel l = new InlineLabel(label + ":");
            l.setStyleName("label");
            add(l, labelTd);
        }
        add(child, widgetTd);
    }

}