alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Struts example source code file (validation.js)

This example Struts source code file (validation.js) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Struts tags/keywords

form, form, tr, tr

The Struts validation.js source code

/*
 * $Id: validation.js 1079950 2011-03-09 19:19:33Z jogep $
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

function clearErrorMessagesXHTML(form) {

    // get field table
    var table, i, r;
    for (i = 0; i < form.childNodes.length; i++) {
        if (form.childNodes[i].tagName !== undefined && form.childNodes[i].tagName.toLowerCase() === 'table') {
            table = form.childNodes[i];
            break;
        }
    }

    if (table === null) {
        return;
    }

    // clear out any rows with an "errorFor" attribute
    var rows = table.rows;
    if (rows === null){
        return;
    }

    var rowsToDelete = [];
    for(i = 0; i < rows.length; i++) {
        r = rows[i];
        // allow blank errorFor values on dojo markup
        if (r.getAttribute("errorFor") !== null) {
            rowsToDelete.push(r);
        }
    }

    // now delete the rows
    for (i = 0; i < rowsToDelete.length; i++) {
        r = rowsToDelete[i];
        table.deleteRow(r.rowIndex);
        //table.removeChild(rowsToDelete[i]);
    }
}

function clearErrorMessages(form) {
    clearErrorMessagesXHTML(form);
}

function clearErrorLabelsXHTML(form) {
    // set all labels back to the normal class
    var i, elements = form.elements;
    for (i = 0; i < elements.length; i++) {

        var parentEl = elements[i];
        // search for the parent table row, abort if the form is reached
        // the form may contain "non-wrapped" inputs inserted by Dojo
        while (parentEl.nodeName.toUpperCase() !== "TR" && parentEl.nodeName.toUpperCase() !== "FORM") {
            parentEl = parentEl.parentNode;
        }
        if (parentEl.nodeName.toUpperCase() === "FORM") {
            parentEl = null;
        }

         //if labelposition is 'top' the label is on the row above
        if(parentEl && parentEl.cells) {
          var labelRow = parentEl.cells.length > 1 ? parentEl : StrutsUtils.previousElement(parentEl, "tr");
          if (labelRow) {
              var cells = labelRow.cells;
              if (cells && cells.length >= 1) {
                  var label = cells[0].getElementsByTagName("label")[0];
                  if (label) {
                      label.setAttribute("class", "label");
                      label.setAttribute("className", "label"); //ie hack cause ie does not support setAttribute
                  }
              }
          }
        }
    }

}

function clearErrorLabels(form) {
    clearErrorLabelsXHTML(form);
}

function addErrorXHTML(e, errorText) {
    try {
        var row = (e.type ? e : e[0]);
        while(row.nodeName.toUpperCase() !== "TR") {
            row = row.parentNode;
        }
        var table = row.parentNode;
        var error = document.createTextNode(errorText);
        var tr = document.createElement("tr");
        var td = document.createElement("td");
        var span = document.createElement("span");
        td.align = "center";
        td.valign = "top";
        td.colSpan = 2;
        span.setAttribute("class", "errorMessage");
        span.setAttribute("className", "errorMessage"); //ie hack cause ie does not support setAttribute
        span.appendChild(error);
        td.appendChild(span);
        tr.appendChild(td);
        tr.setAttribute("errorFor", e.id);
        table.insertBefore(tr, row);

        // update the label too
        //if labelposition is 'top' the label is on the row above
        var labelRow = row.cells.length > 1 ? row : StrutsUtils.previousElement(tr, "tr");
        var label = labelRow.cells[0].getElementsByTagName("label")[0];
        if (label) {
            label.setAttribute("class", "errorLabel");
            label.setAttribute("className", "errorLabel"); //ie hack cause ie does not support setAttribute
        }
    } catch (err) {
        alert(err);
    }
}

function addError(e, errorText) {
    addErrorXHTML(e, errorText);
}

Other Struts examples (source code examples)

Here is a short list of links related to this Struts validation.js source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.