/* * Copyright (c) 1995-2005 Macromedia, Inc. All rights reserved. */ var KT_focusedEl = null; /********** KT_validateSingle function description: Validates single character agains single mask component params: ascchar: character single character, to test if it is correct in the context of the mask character maskchar: character single mask character, see below for meaning returns: boolean **********/ function KT_validateSingle(ascchar, maskchar) { var cchar = ascchar.charCodeAt(0); switch (maskchar) { case "9": //numeric if (cchar < 58 && cchar > 47) { return true; } break; case "A": //letter if ((cchar < 91 && cchar > 64) || (cchar < 123 && cchar > 96)) { return true; } break; case "X": //letter or numeric if ((cchar < 91 && cchar > 64) || (cchar < 123 && cchar > 96) || (cchar < 58 && cchar > 47)) { return true; } break; case "?": //any character return true; break; default: return true; break; } } /********** KT_maskDefaultValue function description: Called with a special mask character, returns the default value for that type of mask params: maskchar: character single mask character, see below for meaning returns: character **********/ function KT_maskDefaultValue(maskchar) { switch (maskchar) { case "9": //numeric return '0'; break; case "A": //letter return 'a'; break; case "X": //letter or numeric return '0'; break; case "?": //any character return '0'; break; default: return '0'; break; } } /********** KT_isSpecialChar function description: Checks if the parameter is a special mask character params: ascchar: character Special mask characters: 9 - numeric A - letters X - letter or number ? - any character returns: boolean **********/ function KT_isSpecialChar(ascchar) { if (ascchar == '9' || ascchar == 'A' || ascchar == 'X' || ascchar == '?') { return true; } else { return false; } } /********** mask_onValueChanged function description: Called when - the user types something in the input - the input loses the focus It validates the input's value against the input's mask params: none returns: none **********/ function mask_onValueChanged() { if ((typeof window.getSelection == 'undefined' && typeof document.selection == 'undefined')) { // if the current browser is not compatible, do nothing return; } if (KT_focusedEl == null || KT_focusedEl.mask == null || KT_focusedEl.mask == '') { return; } var mask = KT_focusedEl.mask; var val = KT_focusedEl.value; var i = 0; var moveCursor = false; if (val == KT_focusedEl.oldText) { // if the field content did not change since the last update, do nothing return; } if (val.length > mask.length) { // strip trailing characters if text length is bigger than mask length val = val.substr(0, mask.length); moveCursor = true; } for (; i < mask.length ; i++) { if (val.charCodeAt(i).toString() != 'NaN') { //if the char is inserted if (KT_isSpecialChar(mask.charAt(i))) { if (KT_validateSingle(val.charAt(i), mask.charAt(i))) { //character is correct, go to next continue; } else { //revert to the last known good value, increase index to break loop val = KT_focusedEl.oldText; i = mask.length; break; } } else { //normal character in the mask if (val.charAt(i) != mask.charAt(i)) { //if the character is different from the mask if (i == val.length - 1) { //append last character and move cursor to the end var lastChar = val.substr(val.length -1, val.length); val = val.substr(0, val.length -1) + mask.charAt(i) + lastChar; moveCursor = true; continue; } else { //revert to the last known good value, increase index to break loop val = KT_focusedEl.oldText; i = mask.length; } break; } } } else { //if the current char is not inserted if (val.length < KT_focusedEl.oldText.length) { //deleted character break; } for (;i mask.length) { // strip trailing characters if text length is bigger than mask length val = val.substr(0, mask.length); moveCursor = true; } if (KT_focusedEl.value != val) { KT_focusedEl.value = val; //last calculated correct value } KT_focusedEl.oldText = val; //update so we can check on next character if (moveCursor) { // no need to move the cursor, it is automatically moved at the end of the sellection by IE and Mozilla } } /********** mask_parseFirstTime function description: Called from mask_onSetFocus, only the first time ( when obj.mask is undefined) Tries to parse the initial value into a valid format, with the following algorithm: - normalizes the string adding non special mask characters if they do not exist - it strips the mask of all non special characters - rebuilds the string using the stripped mask - compares the string with the stripped mask and changes the values if they are invalid - rebuild the string and returns params: none returns: none **********/ function mask_parseFirstTime(value, mask) { var strippedmask = ''; var strippedvalue = ''; cond = 1;imask = 0; ival = 0;cnt = 0; //NORMALIZE VALUE: add non special characters while (cond == 1) { cond = 1; if (!KT_isSpecialChar(mask.charAt(imask))) { if (value.charCodeAt(ival).toString() != 'NaN') { if (mask.charAt(imask) == value.charAt(ival)) { imask++;ival++; } else { value = value.substr(0, ival) + mask.charAt(imask) + value.substr(ival, value.length); imask = 0; ival = 0; cond = 1; } } else { value += KT_maskDefaultValue(mask.charAt(imask)); } } else { imask++;ival++; } if (imask >= mask.length || ival >= value.length) { cond = 0; } } //save only the special chars in a mask for (i=0;i