com.tasktop.c2c.server.common.profile.web.client.ValidatingTextAreaInputCell.java Source code

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Here is the source code for com.tasktop.c2c.server.common.profile.web.client.ValidatingTextAreaInputCell.java

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/*******************************************************************************
 * Copyright (c) 2010, 2012 Tasktop Technologies
 * Copyright (c) 2010, 2011 SpringSource, a division of VMware
 * 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     Tasktop Technologies - initial API and implementation
 ******************************************************************************/
package com.tasktop.c2c.server.common.profile.web.client;

import java.util.Map;

import com.google.gwt.cell.client.ValueUpdater;
import com.google.gwt.dom.client.Element;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;

/**
 * @author Lucas Panjer (Tasktop Technologies Inc.)
 * 
 */
public class ValidatingTextAreaInputCell extends TextAreaInputCell {

    private final String fieldName;
    private final Map<String, String> errorMap;

    public ValidatingTextAreaInputCell(String newFieldName, Map<String, String> errorTable) {
        fieldName = newFieldName;
        errorMap = errorTable;
    }

    @Override
    protected void finishEditing(Element parent, String value, Object key, ValueUpdater<String> valueUpdater) {

        // We surround the input element with a <span>, so we need to do an extra level of child traversal to get at it.
        if (ValidationUtils.hasError(key, fieldName, errorMap)) {
            super.finishEditing(getInputElement(parent), value, key, valueUpdater);
        } else {
            // If there's no error, there's no surrounding block - make our normal call.
            super.finishEditing(parent, value, key, valueUpdater);
        }
    }

    @Override
    public void render(Context context, String value, SafeHtmlBuilder sb) {

        if (ValidationUtils.hasError(context.getKey(), fieldName, errorMap)) {
            renderError(context, value, sb);
        } else {
            super.render(context, value, sb);
        }
    }

    private void renderError(Context context, String value, SafeHtmlBuilder sb) {

        // Tack on our surrounding highlight.
        sb.appendHtmlConstant("<div class=\"errorLabelWrapper\">");

        super.render(context, value, sb);

        // Also add in a space for our validation failure message.
        sb.appendHtmlConstant("<div class=\"errorLabel\">");
        sb.appendEscaped(ValidationUtils.getErrorMessage(context.getKey(), fieldName, errorMap));
        sb.appendHtmlConstant("</div></div>");
    }

}