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+/**
+ * AW Masked Input
+ * @version 1.3
+ * @author Kendall Conrad
+ * @url http://www.angelwatt.com/coding/masked_input.php
+ * @created 2008-12-16
+ * @modified 2013-08-19
+ * @license This work is licensed under a Creative Commons
+ * Attribution-Share Alike 3.0 United States License
+ * http://creativecommons.org/licenses/by-sa/3.0/us/
+ *
+ * @param scope The object to attach MaskedInput to.
+ */
+(function(scope) {
+ 'use strict';
+
+ /**
+ * MaskedInput takes many possible arguments described below.
+ * Note: req = required, opt = optional
+ * @param {object} args {
+ * -elm [req] text input node to apply the mask on
+ * -format [req] string format for the mask
+ * -allowed [opt, '0123456789'] string with chars allowed to be typed
+ * -sep [opt, '\/:-'] string of char(s) used as separators in mask
+ * -typeon [opt, '_YMDhms'] string of chars in mask that can be typed on
+ * -onfilled [opt, null] function to run when the format is filled in
+ * -onbadkey [opt, null] function to run when user types a unallowed key
+ * -badkeywait [opt, 0] used with onbadkey. Indicates how long (in ms)
+ * to lock text input for onbadkey function to run
+ * -preserve [opt, true] whether to preserve existing text in
+ * field during init.
+ * }
+ * @returns MaskedInput
+ */
+ scope.MaskedInput = function(args) {
+ // Ensure passing in valid argument
+ if (!args || !args.elm || !args.format) {
+ return null;
+ }
+ // Ensure use of 'new'
+ if (!(this instanceof scope.MaskedInput)) {
+ return new scope.MaskedInput(args);
+ }
+ // Initialize variables
+ var self = this,
+ el = args.elm,
+ format = args.format,
+ allowed = args.allowed || '0123456789',
+ sep = args.separator || '\/:-',
+ open = args.typeon || '_YMDhms',
+ onbadkey = args.onbadkey || function() {},
+ onfilled = args.onfilled || function() {},
+ badwait = args.badkeywait || 0,
+ preserve = args.hasOwnProperty('preserve') ? !!args.preserve : true,
+ // ----
+ enabled = true,
+ locked = false,
+ startText = format,
+ /**
+ * Add events to objects.
+ */
+ evtAdd = (function() {
+ if (window.addEventListener) {
+ return function(obj, type, fx, capture) {
+ obj.addEventListener(type, fx,
+ (capture === undefined) ? false : capture);
+ };
+ }
+ if (window.attachEvent) {
+ return function(obj, type, fx) {
+ obj.attachEvent('on' + type, fx);
+ };
+ }
+ return function(obj, type, fx) {
+ obj['on' + type] = fx;
+ };
+ }()),
+ /**
+ * Checks whether the format has been completely filled out.
+ * @return boolean if all typeon chars have been filled.
+ */
+ isFilled = function() {
+ // Check if any typeon characters are left
+ // Work from end of string as it's usually last filled
+ for (var a = el.value.length - 1; a >= 0; a--) {
+ // Check against each typeon character
+ for (var c = 0, d = open.length; c < d; c++) {
+ // If one matches we don't need to check anymore
+ if (el.value[a] === open[c]) {
+ return false;
+ }
+ }
+ }
+ return true;
+ },
+ /**
+ * Gets the current position of the text cursor in a text field.
+ * @param node a input or textarea HTML node.
+ * @return int text cursor position index, or -1 if there was a problem.
+ */
+ getTextCursor = function(node) {
+ try {
+ node.focus();
+ if (node.selectionStart >= 0) {
+ return node.selectionStart;
+ }
+ if (document.selection) {// IE
+ var rng = document.selection.createRange();
+ return -rng.moveStart('character', -node.value.length);
+ }
+ return -1;
+ }
+ catch (e) {
+ return -1;
+ }
+ },
+ /**
+ * Sets the text cursor in a text field to a specific position.
+ * @param node a input or textarea HTML node.
+ * @param pos int of the position to be placed.
+ * @return boolean true is successful, false otherwise.
+ */
+ setTextCursor = function(node, pos) {
+ try {
+ if (node.selectionStart) {
+ node.focus();
+ node.setSelectionRange(pos, pos);
+ }
+ else if (node.createTextRange) { // IE
+ var rng = node.createTextRange();
+ rng.move('character', pos);
+ rng.select();
+ }
+ }
+ catch (e) {
+ return false;
+ }
+ return true;
+ },
+ /**
+ * Gets the keyboard input in usable way.
+ * @param code integer character code
+ * @return string representing character code
+ */
+ getKey = function(code) {
+ code = code || window.event;
+ var ch = '',
+ keyCode = code.which,
+ evt = code.type;
+ if (keyCode === undefined || keyCode === null) {
+ keyCode = code.keyCode;
+ }
+ // no key, no play
+ if (keyCode === undefined || keyCode === null) {
+ return '';
+ }
+ // deal with special keys
+ switch (keyCode) {
+ case 8:
+ ch = 'bksp';
+ break;
+ case 46: // handle del and . both being 46
+ ch = (evt === 'keydown') ? 'del' : '.';
+ break;
+ case 16:
+ ch = 'shift';
+ break;
+ case 0: /*CRAP*/
+ case 9: /*TAB*/
+ case 13:/*ENTER*/
+ ch = 'etc';
+ break;
+ case 37:
+ case 38:
+ case 39:
+ case 40: // arrow keys
+ ch = (!code.shiftKey &&
+ (code.charCode !== 39 && code.charCode !== undefined)) ?
+ 'etc' : String.fromCharCode(keyCode);
+ break;
+ // default to thinking it's a character or digit
+ default:
+ ch = String.fromCharCode(keyCode);
+ break;
+ }
+ return ch;
+ },
+ /**
+ * Stop the event propogation chain.
+ * @param evt Event to stop
+ * @param ret boolean, used for IE to prevent default event
+ */
+ stopEvent = function(evt, ret) {
+ // Stop default behavior the standard way
+ if (evt.preventDefault) {
+ evt.preventDefault();
+ }
+ // Then there's IE
+ evt.returnValue = ret || false;
+ },
+ /**
+ * Updates the text field with the given key.
+ * @param key string keyboard input.
+ */
+ update = function(key) {
+ var p = getTextCursor(el),
+ c = el.value,
+ val = '',
+ cond = true;
+ // Handle keys now
+ switch (cond) {
+ // Allowed characters
+ case (allowed.indexOf(key) !== -1):
+ p = p + 1;
+ // if text cursor at end
+ if (p > format.length) {
+ return false;
+ }
+ // Handle cases where user places cursor before separator
+ while (sep.indexOf(c.charAt(p - 1)) !== -1 && p <= format.length) {
+ p = p + 1;
+ }
+ val = c.substr(0, p - 1) + key + c.substr(p);
+ // Move csor up a spot if next char is a separator char
+ if (allowed.indexOf(c.charAt(p)) === -1
+ && open.indexOf(c.charAt(p)) === -1) {
+ p = p + 1;
+ }
+ break;
+ case (key === 'bksp'): // backspace
+ p = p - 1;
+ // at start of field
+ if (p < 0) {
+ return false;
+ }
+ // If previous char is a separator, move a little more
+ while (allowed.indexOf(c.charAt(p)) === -1
+ && open.indexOf(c.charAt(p)) === -1
+ && p > 1) {
+ p = p - 1;
+ }
+ val = c.substr(0, p) + format.substr(p, 1) + c.substr(p + 1);
+ break;
+ case (key === 'del'): // forward delete
+ // at end of field
+ if (p >= c.length) {
+ return false;
+ }
+ // If next char is a separator and not the end of the text field
+ while (sep.indexOf(c.charAt(p)) !== -1
+ && c.charAt(p) !== '') {
+ p = p + 1;
+ }
+ val = c.substr(0, p) + format.substr(p, 1) + c.substr(p + 1);
+ p = p + 1; // Move position forward
+ break;
+ case (key === 'etc'):
+ // Catch other allowed chars
+ return true;
+ default:
+ return false; // Ignore the rest
+ }
+ el.value = ''; // blank it first (Firefox issue)
+ el.value = val; // put updated value back in
+ setTextCursor(el, p); // Set the text cursor
+ return false;
+ },
+ /**
+ * Returns whether or not a given input is valid for the mask.
+ * @param k string of character to check.
+ * @return bool true if it's a valid character.
+ */
+ goodOnes = function(k) {
+ // if not in allowed list, or invisible key action
+ if (allowed.indexOf(k) === -1 && k !== 'bksp' && k !== 'del' && k !== 'etc') {
+ // Need to ensure cursor position not lost
+ var p = getTextCursor(el);
+ locked = true;
+ onbadkey(k);
+ // Hold lock long enough for onbadkey function to run
+ setTimeout(function() {
+ locked = false;
+ setTextCursor(el, p);
+ }, badwait);
+ return false;
+ }
+ return true;
+ },
+ /**
+ * Handles the key down events.
+ * @param e Event
+ */
+ keyHandlerDown = function(e) {
+ if (!enabled) {
+ return true;
+ }
+ if (locked) {
+ stopEvent(e);
+ return false;
+ }
+ e = e || event;
+ var key = getKey(e);
+ // Stop copy and paste
+ if ((e.metaKey || e.ctrlKey) && (key === 'X' || key === 'V')) {
+ stopEvent(e);
+ return false;
+ }
+ // Allow for OS commands
+ if (e.metaKey || e.ctrlKey) {
+ return true;
+ }
+ if (el.value === '') {
+ el.value = format;
+ setTextCursor(el, 0);
+ }
+ // Only do update for bksp del
+ if (key === 'bksp' || key === 'del') {
+ update(key);
+ stopEvent(e);
+ return false;
+ }
+ return true;
+ },
+ /**
+ * Handles the key press events.
+ * @param e Event
+ */
+ keyHandlerPress = function(e) {
+ if (!enabled) {
+ return true;
+ }
+ if (locked) {
+ stopEvent(e);
+ return false;
+ }
+ e = e || event;
+ var key = getKey(e);
+ // Check if modifier key is being pressed; command
+ if (key === 'etc' || e.metaKey || e.ctrlKey || e.altKey) {
+ return true;
+ }
+ if (key !== 'bksp' && key !== 'del' && key !== 'shift') {
+ if (!goodOnes(key)) {
+ stopEvent(e);
+ return false;
+ }
+ if (update(key)) {
+ if (isFilled()) {
+ onfilled();
+ }
+ stopEvent(e, true);
+ return true;
+ }
+ if (isFilled()) {
+ onfilled();
+ }
+ stopEvent(e);
+ return false;
+ }
+ return false;
+ },
+ /**
+ * Initialize the object.
+ */
+ init = function() {
+ // Check if an input or textarea tag was passed in
+ if (!el.tagName || (el.tagName.toUpperCase() !== 'INPUT'
+ && el.tagName.toUpperCase() !== 'TEXTAREA')) {
+ return null;
+ }
+ // Only place formatted text in field when not preserving
+ // text or it's empty.
+ if (!preserve || el.value === '') {
+ el.value = format;
+ }
+ // Assign events
+ evtAdd(el, 'keydown', function(e) {
+ keyHandlerDown(e);
+ });
+ evtAdd(el, 'keypress', function(e) {
+ keyHandlerPress(e);
+ });
+ // Let us set the initial text state when focused
+ evtAdd(el, 'focus', function() {
+ startText = el.value;
+ });
+ // Handle onChange event manually
+ evtAdd(el, 'blur', function() {
+ if (el.value !== startText && el.onchange) {
+ el.onchange();
+ }
+ });
+ return self;
+ };
+
+ /**
+ * Resets the text field so just the format is present.
+ */
+ self.resetField = function() {
+ el.value = format;
+ };
+
+ /**
+ * Set the allowed characters that can be used in the mask.
+ * @param a string of characters that can be used.
+ */
+ self.setAllowed = function(a) {
+ allowed = a;
+ self.resetField();
+ };
+
+ /**
+ * The format to be used in the mask.
+ * @param f string of the format.
+ */
+ self.setFormat = function(f) {
+ format = f;
+ self.resetField();
+ };
+
+ /**
+ * Set the characters to be used as separators.
+ * @param s string representing the separator characters.
+ */
+ self.setSeparator = function(s) {
+ sep = s;
+ self.resetField();
+ };
+
+ /**
+ * Set the characters that the user will be typing over.
+ * @param t string representing the characters that will be typed over.
+ */
+ self.setTypeon = function(t) {
+ open = t;
+ self.resetField();
+ };
+
+ /**
+ * Sets whether the mask is active.
+ */
+ self.setEnabled = function(enable) {
+ enabled = enable;
+ };
+
+ /**
+ * Local change for Freeside: sets the content of the field,
+ * respecting formatting rules
+ */
+ self.setValue = function(value) {
+ self.resetField();
+ setTextCursor(el, 0);
+ var i = 0; // index in value
+ while (i < value.length && !isFilled()) {
+ update(value[i]);
+ i++;
+ }
+ }
+
+ return init();
+ };
+}(window));
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