matrix.js

// $Id: matrix.js,v 1.1.2.9.2.1 2011/01/18 10:10:05 aaron1234nz Exp $

(function($) {
//Global container.
window.matrix = {

/**
 * window.matrix.sum()
 * @param elements
 *     Class of elements to act on
 * @param field_name
 *     The name of the field
 * @param destination
 *     The ID of the div to place the result
 * @param prefix
 *    String to put in front of the result
 * @param suffix
 *    String to put afer the result
 * @param rounding
 *     Number of decimal places to round to
 */
sum: function(elements, field_name, destination, prefix, suffix, rounding) {
  var sum = 0;
  $('#matrix-field-'+ field_name +' .' + elements).each(function(index){
    var num = parseFloat($(this).val());
    if (!isNaN(num)) {
      sum += num;
    }
  });
  if (!isNaN(rounding)) {
    sum = sum.toFixed(rounding);
  }
  $('#matrix-result-'+ field_name +'-'+ destination).html(prefix + sum + suffix);
  $('#matrix-field-'+ field_name +' .matrix-cell-' + destination).val(prefix + sum + suffix);
},

/**
 * window.matrix.average()
 * @param elements
 *     Class of elements to act on
 * @param destination
 *     The ID of the div to place the result
 * @param field_name
 *     The name of the field
 * @param prefix
 *    String to put in front of the result
 * @param suffix
 *    String to put afer the result
 * @param rounding
 *     Number of decimal places to round to
 */
average: function(elements, destination, field_name, prefix, suffix, rounding) {
  var total = 0;
  var average = 0;
  var count = $('.' + elements).length;
  $('#matrix-field-'+ field_name +' .' + elements).each(function(index){
    var num = parseFloat($(this).val());
    if (!isNaN(num)) {
      total += num;
    }
  });
  console.log(count);
  if (count > 0) {
    average = total/count;
  }
  if (!isNaN(rounding)) {
    average = average.toFixed(rounding);
  }
  $('#matrix-result-'+ field_name +'-'+ destination).html(prefix + average + suffix);
  $('#matrix-field-'+ field_name +' .matrix-cell-' + destination).val(prefix + average + suffix);
},

/**
 * window.matrix.min()
 * @param elements
 *     Class of elements to act on
 * @param destination
 *     The ID of the div to place the result
 * @param field_name
 *     The name of the field
 * @param prefix
 *    String to put in front of the result
 * @param suffix
 *    String to put afer the result
 * @param rounding
 *     Number of decimal places to round to
 */
min: function(elements, destination, field_name, prefix, suffix, rounding) {
  $('#matrix-field-'+ field_name +' .' + elements).each(function(index){
    var num = parseFloat($(this).val());
    if (isNaN(min) && !isNaN(num)) {
      min = num;
    }
    if (!isNaN(num) && num < min) {
      min = num;
    }
  });
  if (!isNaN(rounding)) {
    min = min.toFixed(rounding);
  }
  $('#matrix-result-'+ field_name +'-'+ destination).html(prefix + min + suffix);
  $('#matrix-field-'+ field_name +' .matrix-cell-' + destination).val(prefix + min + suffix);
},

/**
 * window.matrix.max()
 * @param elements
 *     Class of elements to act on
 * @param destination
 *     The ID of the div to place the result
 * @param field_name
 *     The name of the field
 * @param prefix
 *    String to put in front of the result
 * @param suffix
 *    String to put afer the result
 * @param rounding
 *     Number of decimal places to round to
 */
max: function(elements, destination, field_name, prefix, suffix, rounding) {
  $('#matrix-field-'+ field_name +' .' + elements).each(function(index){
    var num = parseFloat($(this).val());
    if (isNaN(max) && !isNaN(num)) {
      max = num;
    }
    if (!isNaN(num) && num > max) {
      max = num;
    }
  });
  if (!isNaN(rounding)) {
    max = max.toFixed(rounding);
  }
  $('#matrix-result-'+ field_name +'-'+ destination).html(preifx + max + suffix);
  $('#matrix-field-'+ field_name +' .matrix-cell-' + destination).val(prefix + max + suffix);
},

/**
 * window.matrix.custom()
 * @param callback
 *     Name of the PHP callback function
 * @param elements
 *     Class of elements to act on
 * @param destination
 *     The ID of the div to place the result
 * @param field_name
 *     The name of the field
 */
custom: function(callback, elements, destination, field_name) {
  var data = [];
  
  $('#matrix-field-'+ field_name +' .' + elements).each(function(index){
    data.push($(this).val());
  });

  $.ajax({
     type: "POST",
     url: Drupal.settings.basePath + "matrix/calculation",
     data: "callback=" + callback + "&data=" + data,
     success: function(result) {
      if (result['error']) {
        alert(result['error']);
      }
      else {
         $('#matrix-result-'+ field_name +'-'+ destination).html(result['data']);
         $('#matrix-field-'+ field_name +' .matrix-cell-' + destination).val(result['data']);
      }
    }
  });
}
}})(jQuery);