library/textformat.js

   1 // Copyright (C) 2005 Rod Roark <rod@sunsetsystems.com>
   2 //
   3 // This program is free software; you can redistribute it and/or
   4 // modify it under the terms of the GNU General Public License
   5 // as published by the Free Software Foundation; either version 2
   6 // of the License, or (at your option) any later version.
   7
   8 // Onkeyup handler for dates.  Converts dates that are keyed in to a
   9 // consistent format, and helps to reduce typing errors.
  10 //
  11 function datekeyup(e, defcc, withtime) {
  12  if (typeof(withtime) == 'undefined') withtime = false;
  13
  14  while(true) {
  15   var delim = '';
  16   var arr = new Array(0, 0, 0, 0, 0, 0);
  17   var ix = 0;
  18   var v = e.value;
  19
  20   // Build an array to facilitate error checking.
  21   for (var i = 0; i < v.length; ++i) {
  22    var c = v.charAt(i);
  23    if (c >= '0' && c <= '9') {
  24     ++arr[ix];
  25    } else if (ix < 2 && (c == '-' || c == '/')) {
  26     arr[++ix] = 0;
  27    } else if (withtime && ix == 2 && c == ' ') {
  28     arr[++ix] = 0;
  29    } else if (withtime && (ix == 3 || ix == 4) && c == ':') {
  30     arr[++ix] = 0;
  31    } else {
  32     e.value = v.substring(0, i);
  33     return;
  34    }
  35   }
  36
  37   // We have finished scanning the string.  If there is a problem,
  38   // drop the last character and repeat the loop.
  39   if ((ix > 5) ||
  40       (!withtime && ix > 2)   ||
  41       (ix > 4 && arr[4] == 0) ||
  42       (ix > 3 && arr[3] == 0) ||
  43       (ix > 2 && arr[2] == 0) ||
  44       (ix > 1 && arr[1] == 0) ||
  45       (ix > 0 && arr[0] == 0) ||
  46       (arr[0] > 8) ||
  47       (ix > 0 && arr[0] > 2 && (arr[0] != 4 || arr[1] > 2 || arr[2] > 2)) ||
  48       (arr[2] > 2 && (arr[2] > 4 || arr[0] > 2 || arr[1] > 2)))
  49   {
  50    e.value = v.substring(0, v.length - 1);
  51   } else {
  52    break;
  53   }
  54  }
  55
  56  // The remainder does reformatting if there is enough data for that.
  57  if (arr[2] == 4 && defcc == '1') { // mm/dd/yyyy
  58   e.value  = v.substring(arr[0] + arr[1] + 2, arr[0] + arr[1] + 6) + '-'; // year
  59   if (arr[0] == 1) e.value += '0';
  60   e.value += v.substring(0, arr[0]) + '-'; // month
  61   if (arr[1] == 1) e.value += '0';
  62   e.value += v.substring(arr[0] + 1, arr[0] + 1 + arr[1]); // day
  63  }
  64  else if (arr[2] == 4) { // dd-mm-yyyy
  65   e.value  = v.substring(arr[0] + arr[1] + 2, arr[0] + arr[1] + 6) + '-'; // year
  66   if (arr[1] == 1) e.value += '0';
  67   e.value += v.substring(arr[0] + 1, arr[0] + 1 + arr[1]) + '-'; // month
  68   if (arr[0] == 1) e.value += '0';
  69   e.value += v.substring(0, arr[0]); // day
  70  }
  71  else if (arr[0] == 4 && arr[2] > 0) { // yyyy-mm-dd
  72   e.value  = v.substring(0, arr[0]) + '-'; // year
  73   if (arr[1] == 1) e.value += '0';
  74   e.value += v.substring(arr[0] + 1, arr[0] + 1 + arr[1]) + '-'; // month
  75   e.value += v.substring(arr[0] + arr[1] + 2, arr[0] + arr[1] + 2 + arr[2]); // day (may be 1 digit)
  76  }
  77  else if (arr[0] == 8 && defcc == '1') { // yyyymmdd
  78   e.value  = v.substring(0, 4) + '-'; // year
  79   e.value += v.substring(4, 6) + '-'; // month
  80   e.value += v.substring(6, 8); // day
  81  }
  82  else if (arr[0] == 8) { // ddmmyyyy
  83   e.value  = v.substring(4, 8) + '-'; // year
  84   e.value += v.substring(2, 4) + '-'; // month
  85   e.value += v.substring(0, 2); // day
  86  }
  87  else {
  88   return;
  89  }
  90  if (withtime) {
  91   e.value += v.substring(arr[0] + arr[1] + arr[2] + 2);
  92  }
  93 }
  94
  95 // Onblur handler to avoid incomplete entry of dates.
  96 //
  97 function dateblur(e, defcc, withtime) {
  98  if (typeof(withtime) == 'undefined') withtime = false;
  99
 100  var v = e.value;
 101  if (v.length == 0) return;
 102
 103  var arr = new Array(0, 0, 0, 0, 0);
 104  var ix = 0;
 105  for (var i = 0; i < v.length; ++i) {
 106   var c = v.charAt(i);
 107   if (c >= '0' && c <= '9') {
 108    ++arr[ix];
 109   } else if (c == '-' || c == '/' || c == ' ' || c == ':') {
 110    arr[++ix] = 0;
 111   } else {
 112    alert('Invalid character in date!');
 113    return;
 114   }
 115  }
 116
 117  // A birth date may be just age in years, in which case we convert it.
 118  if (ix == 0 && arr[0] > 0 && arr[0] <= 3 && e.name.indexOf('DOB') >= 0) {
 119   var d = new Date();
 120   d = new Date(d.getTime() - parseInt(v) * 365.25 * 24 * 60 * 60 * 1000);
 121   var s = '' + d.getFullYear() + '-';
 122   if (d.getMonth() < 9) s += '0';
 123   s += (d.getMonth() + 1) + '-';
 124   if (d.getDate() < 10) s += '0';
 125   s += d.getDate();
 126   e.value = s;
 127   return;
 128  }
 129
 130  if ((!withtime && ix != 2) || (withtime && ix < 2) || arr[0] != 4 || arr[1] != 2 || arr[2] < 1) {
 131   if (confirm('Date entry is incomplete! Try again?'))
 132    e.focus();
 133   else
 134    e.value = '';
 135   return;
 136  }
 137
 138  if (arr[2] == 1) {
 139   e.value = v.substring(0, 8) + '0' + v.substring(8);
 140  }
 141 }
 142
 143 // Private subroutine for US phone number formatting.
 144 function usphone(v) {
 145  if (v.length > 0 && v.charAt(0) == '-') v = v.substring(1);
 146  var oldlen = v.length;
 147  for (var i = 0; i < v.length; ++i) {
 148   var c = v.charAt(i);
 149   if (c < '0' || c > '9') {
 150    v = v.substring(0, i) + v.substring(i + 1);
 151    --i;
 152   }
 153  }
 154  if (oldlen > 3 && v.length >= 3) {
 155   v = v.substring(0, 3) + '-' + v.substring(3);
 156   if (oldlen > 7 && v.length >= 7) {
 157    v = v.substring(0, 7) + '-' + v.substring(7);
 158    if (v.length > 12) v = v.substring(0, 12);
 159   }
 160  }
 161  return v;
 162 }
 163
 164 // Private subroutine for non-US phone number formatting.
 165 function nonusphone(v) {
 166  for (var i = 0; i < v.length; ++i) {
 167   var c = v.charAt(i);
 168   if (c < '0' || c > '9') {
 169    v = v.substring(0, i) + v.substring(i + 1);
 170    --i;
 171   }
 172  }
 173  return v;
 174 }
 175
 176 // Telephone country codes that are exactly 2 digits.
 177 var twodigitccs = '/20/30/31/32/33/34/36/39/40/41/43/44/45/46/47/48/49/51/52/53/54/55/56/57/58/60/61/62/63/64/65/66/81/82/84/86/90/91/92/93/94/95/98/';
 178
 179 // Onkeyup handler for phone numbers.  Helps to ensure a consistent
 180 // format and to reduce typing errors.  defcc is the default telephone
 181 // country code as a string.
 182 //
 183 function phonekeyup(e, defcc) {
 184  var v = e.value;
 185  var oldlen = v.length;
 186
 187  // Deal with international formatting.
 188  if (v.length > 0 && v.charAt(0) == '+') {
 189   var cc = '';
 190   for (var i = 1; i < v.length; ++i) {
 191    var c = v.charAt(i);
 192    if (c < '0' || c > '9') {
 193     v = v.substring(0, i) + v.substring(i + i);
 194     --i;
 195     continue;
 196    }
 197    cc += c;
 198    if (i == 1 && oldlen > 2) {
 199     if (cc == '1') { // USA
 200      e.value = '+1-' + usphone(v.substring(2));
 201      return;
 202     }
 203     if (cc == '7') { // USSR
 204      e.value = '+7-' + nonusphone(v.substring(2));
 205      return;
 206     }
 207    }
 208    else if (i == 2 && oldlen > 3) {
 209     if (twodigitccs.indexOf(cc) >= 0) {
 210      e.value = v.substring(0, 3) + '-' + nonusphone(v.substring(3));
 211      return;
 212     }
 213    }
 214    else if (i == 3 && oldlen > 4) {
 215     e.value = v.substring(0, 4) + '-' + nonusphone(v.substring(4));
 216     return;
 217    }
 218   }
 219   e.value = v;
 220   return;
 221  }
 222
 223  if (defcc == '1') {
 224   e.value = usphone(v);
 225  } else {
 226   e.value = nonusphone(v);
 227  }
 228
 229  return;
 230 }
 231
 232 // onKeyUp handler for mask-formatted fields.
 233 // This feature is experimental.
 234 function maskkeyup(elem, mask) {
 235  if (!mask || mask.length == 0) return;
 236  var i = 0; // elem and mask index
 237  var v = elem.value;
 238  for (; i < mask.length && i < v.length; ++i) {
 239   var ec = v.charAt(i);
 240   var mc = mask.charAt(i);
 241   if (mc == '#' && (ec < '0' || ec > '9')) {
 242    break;
 243   }
 244  }
 245  v = v.substring(0, i);
 246  while (i < mask.length) {
 247   var mc = mask.charAt(i++);
 248   if (mc == '*' || mc == '#') break;
 249   v += mc;
 250  }
 251  elem.value = v;
 252 }
 253
 254 // onBlur handler for mask-formatted fields.
 255 // This feature is experimental.
 256 function maskblur(elem, mask) {
 257  var v = elem.value;
 258  var i = mask.length;
 259  if (i > 0 && v.length > 0 && v.length != i) {
 260   for (; i > 0 && mask.charAt(i-1) == '#'; --i);
 261   // i is now index to first # in # string at end of mask
 262   if (i > v.length) {
 263    if (confirm('Field entry is incomplete! Try again?'))
 264     elem.focus();
 265    else
 266     elem.value = '';
 267    return;
 268   }
 269   while (v.length < mask.length) {
 270    v = v.substring(0, i) + '0' + v.substring(i, v.length);
 271   }
 272   elem.value = v;
 273  }
 274 }
 275