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513
web/metronic/global/plugins/bootstrap-maxlength/bootstrap-maxlength.js
vendored
Normal file
513
web/metronic/global/plugins/bootstrap-maxlength/bootstrap-maxlength.js
vendored
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@ -0,0 +1,513 @@
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(function ($) {
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'use strict';
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/**
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* We need an event when the elements are destroyed
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* because if an input is removed, we have to remove the
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* maxlength object associated (if any).
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* From:
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* http://stackoverflow.com/questions/2200494/jquery-trigger-event-when-an-element-is-removed-from-the-dom
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*/
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if (!$.event.special.destroyed) {
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$.event.special.destroyed = {
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remove: function (o) {
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if (o.handler) {
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o.handler();
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}
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}
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};
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}
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$.fn.extend({
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maxlength: function (options, callback) {
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var documentBody = $('body'),
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defaults = {
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showOnReady: false, // true to always show when indicator is ready
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alwaysShow: false, // if true the indicator it's always shown.
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threshold: 10, // Represents how many chars left are needed to show up the counter
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warningClass: 'label label-success',
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limitReachedClass: 'label label-important label-danger',
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separator: ' / ',
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preText: '',
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postText: '',
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showMaxLength: true,
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placement: 'bottom',
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message: null, // an alternative way to provide the message text
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showCharsTyped: true, // show the number of characters typed and not the number of characters remaining
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validate: false, // if the browser doesn't support the maxlength attribute, attempt to type more than
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// the indicated chars, will be prevented.
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utf8: false, // counts using bytesize rather than length. eg: '£' is counted as 2 characters.
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appendToParent: false, // append the indicator to the input field's parent instead of body
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twoCharLinebreak: true, // count linebreak as 2 characters to match IE/Chrome textarea validation. As well as DB storage.
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customMaxAttribute: null // null = use maxlength attribute and browser functionality, string = use specified attribute instead.
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// Form submit validation is handled on your own. when maxlength has been exceeded 'overmax' class added to element
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};
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if ($.isFunction(options) && !callback) {
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callback = options;
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options = {};
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}
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options = $.extend(defaults, options);
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/**
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* Return the length of the specified input.
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*
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* @param input
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* @return {number}
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*/
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function inputLength(input) {
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var text = input.val();
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if (options.twoCharLinebreak) {
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// Count all line breaks as 2 characters
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text = text.replace(/\r(?!\n)|\n(?!\r)/g, '\r\n');
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} else {
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// Remove all double-character (\r\n) linebreaks, so they're counted only once.
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text = text.replace(new RegExp('\r?\n', 'g'), '\n');
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}
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var currentLength = 0;
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if (options.utf8) {
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currentLength = utf8Length(text);
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} else {
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currentLength = text.length;
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}
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return currentLength;
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}
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/**
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* Truncate the text of the specified input.
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*
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* @param input
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* @param limit
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*/
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function truncateChars(input, maxlength) {
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var text = input.val();
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var newlines = 0;
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if (options.twoCharLinebreak) {
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text = text.replace(/\r(?!\n)|\n(?!\r)/g, '\r\n');
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if (text.substr(text.length - 1) === '\n' && text.length % 2 === 1) {
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newlines = 1;
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}
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}
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input.val(text.substr(0, maxlength - newlines));
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}
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/**
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* Return the length of the specified input in UTF8 encoding.
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*
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* @param input
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* @return {number}
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*/
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function utf8Length(string) {
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var utf8length = 0;
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for (var n = 0; n < string.length; n++) {
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var c = string.charCodeAt(n);
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if (c < 128) {
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utf8length++;
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}
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else if ((c > 127) && (c < 2048)) {
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utf8length = utf8length + 2;
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}
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else {
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utf8length = utf8length + 3;
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}
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}
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return utf8length;
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}
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/**
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* Return true if the indicator should be showing up.
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*
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* @param input
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* @param thereshold
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* @param maxlength
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* @return {number}
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*/
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function charsLeftThreshold(input, thereshold, maxlength) {
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var output = true;
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if (!options.alwaysShow && (maxlength - inputLength(input) > thereshold)) {
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output = false;
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}
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return output;
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}
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/**
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* Returns how many chars are left to complete the fill up of the form.
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*
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* @param input
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* @param maxlength
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* @return {number}
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*/
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function remainingChars(input, maxlength) {
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var length = maxlength - inputLength(input);
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return length;
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}
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/**
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* When called displays the indicator.
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*
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* @param indicator
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*/
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function showRemaining(currentInput, indicator) {
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indicator.css({
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display: 'block'
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});
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currentInput.trigger('maxlength.shown');
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}
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/**
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* When called shows the indicator.
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*
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* @param indicator
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*/
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function hideRemaining(currentInput, indicator) {
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indicator.css({
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display: 'none'
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});
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currentInput.trigger('maxlength.hidden');
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}
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/**
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* This function updates the value in the indicator
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*
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* @param maxLengthThisInput
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* @param typedChars
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* @return String
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*/
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function updateMaxLengthHTML(currentInputText, maxLengthThisInput, typedChars) {
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var output = '';
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if (options.message) {
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if (typeof options.message === 'function') {
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output = options.message(currentInputText, maxLengthThisInput);
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} else {
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output = options.message.replace('%charsTyped%', typedChars)
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.replace('%charsRemaining%', maxLengthThisInput - typedChars)
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.replace('%charsTotal%', maxLengthThisInput);
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}
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} else {
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if (options.preText) {
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output += options.preText;
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}
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if (!options.showCharsTyped) {
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output += maxLengthThisInput - typedChars;
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}
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else {
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output += typedChars;
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}
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if (options.showMaxLength) {
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output += options.separator + maxLengthThisInput;
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}
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if (options.postText) {
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output += options.postText;
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}
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}
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return output;
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}
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/**
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* This function updates the value of the counter in the indicator.
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* Wants as parameters: the number of remaining chars, the element currently managed,
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* the maxLength for the current input and the indicator generated for it.
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*
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* @param remaining
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* @param currentInput
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* @param maxLengthCurrentInput
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* @param maxLengthIndicator
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*/
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function manageRemainingVisibility(remaining, currentInput, maxLengthCurrentInput, maxLengthIndicator) {
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if (maxLengthIndicator) {
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maxLengthIndicator.html(updateMaxLengthHTML(currentInput.val(), maxLengthCurrentInput, (maxLengthCurrentInput - remaining)));
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if (remaining > 0) {
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if (charsLeftThreshold(currentInput, options.threshold, maxLengthCurrentInput)) {
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showRemaining(currentInput, maxLengthIndicator.removeClass(options.limitReachedClass).addClass(options.warningClass));
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} else {
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hideRemaining(currentInput, maxLengthIndicator);
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}
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} else {
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showRemaining(currentInput, maxLengthIndicator.removeClass(options.warningClass).addClass(options.limitReachedClass));
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}
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}
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if (options.customMaxAttribute) {
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// class to use for form validation on custom maxlength attribute
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if (remaining < 0) {
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currentInput.addClass('overmax');
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} else {
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currentInput.removeClass('overmax');
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}
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}
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}
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/**
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* This function returns an object containing all the
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* informations about the position of the current input
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*
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* @param currentInput
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* @return object {bottom height left right top width}
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*
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*/
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function getPosition(currentInput) {
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var el = currentInput[0];
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return $.extend({}, (typeof el.getBoundingClientRect === 'function') ? el.getBoundingClientRect() : {
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width: el.offsetWidth,
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height: el.offsetHeight
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}, currentInput.offset());
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}
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/**
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* This function places the maxLengthIndicator at the
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* top / bottom / left / right of the currentInput
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*
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* @param currentInput
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* @param maxLengthIndicator
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* @return null
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*
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*/
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function place(currentInput, maxLengthIndicator) {
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var pos = getPosition(currentInput);
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// Supports custom placement handler
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if ($.type(options.placement) === 'function'){
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options.placement(currentInput, maxLengthIndicator, pos);
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return;
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}
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// Supports custom placement via css positional properties
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if ($.isPlainObject(options.placement)){
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placeWithCSS(options.placement, maxLengthIndicator);
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return;
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}
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var inputOuter = currentInput.outerWidth(),
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outerWidth = maxLengthIndicator.outerWidth(),
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actualWidth = maxLengthIndicator.width(),
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actualHeight = maxLengthIndicator.height();
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// get the right position if the indicator is appended to the input's parent
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if (options.appendToParent) {
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pos.top -= currentInput.parent().offset().top;
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pos.left -= currentInput.parent().offset().left;
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}
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switch (options.placement) {
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case 'bottom':
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maxLengthIndicator.css({ top: pos.top + pos.height, left: pos.left + pos.width / 2 - actualWidth / 2 });
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break;
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case 'top':
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maxLengthIndicator.css({ top: pos.top - actualHeight, left: pos.left + pos.width / 2 - actualWidth / 2 });
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break;
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case 'left':
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maxLengthIndicator.css({ top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left - actualWidth });
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break;
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case 'right':
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maxLengthIndicator.css({ top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left + pos.width });
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break;
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case 'bottom-right':
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maxLengthIndicator.css({ top: pos.top + pos.height, left: pos.left + pos.width });
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break;
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case 'top-right':
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maxLengthIndicator.css({ top: pos.top - actualHeight, left: pos.left + inputOuter });
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break;
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case 'top-left':
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maxLengthIndicator.css({ top: pos.top - actualHeight, left: pos.left - outerWidth });
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break;
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case 'bottom-left':
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maxLengthIndicator.css({ top: pos.top + currentInput.outerHeight(), left: pos.left - outerWidth });
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break;
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case 'centered-right':
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maxLengthIndicator.css({ top: pos.top + (actualHeight / 2), left: pos.left + inputOuter - outerWidth - 3 });
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break;
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// Some more options for placements
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case 'bottom-right-inside':
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maxLengthIndicator.css({ top: pos.top + pos.height, left: pos.left + pos.width - outerWidth });
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break;
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case 'top-right-inside':
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maxLengthIndicator.css({ top: pos.top - actualHeight, left: pos.left + inputOuter - outerWidth });
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break;
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case 'top-left-inside':
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maxLengthIndicator.css({ top: pos.top - actualHeight, left: pos.left });
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break;
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case 'bottom-left-inside':
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maxLengthIndicator.css({ top: pos.top + currentInput.outerHeight(), left: pos.left });
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break;
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}
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}
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/**
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* This function places the maxLengthIndicator based on placement config object.
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*
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* @param {object} placement
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* @param {$} maxLengthIndicator
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* @return null
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*
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*/
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function placeWithCSS(placement, maxLengthIndicator) {
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if (!placement || !maxLengthIndicator){
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return;
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}
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var POSITION_KEYS = [
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'top',
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'bottom',
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'left',
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'right',
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'position'
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];
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var cssPos = {};
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// filter css properties to position
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$.each(POSITION_KEYS, function (i, key) {
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var val = options.placement[key];
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if (typeof val !== 'undefined'){
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cssPos[key] = val;
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}
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});
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||||
maxLengthIndicator.css(cssPos);
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return;
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||||
}
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/**
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||||
* This function returns true if the indicator position needs to
|
||||
* be recalculated when the currentInput changes
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*
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* @return {boolean}
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*
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*/
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function isPlacementMutable() {
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return options.placement === 'bottom-right-inside' || options.placement === 'top-right-inside' || typeof options.placement === 'function' || (options.message && typeof options.message === 'function');
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}
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||||
/**
|
||||
* This function retrieves the maximum length of currentInput
|
||||
*
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||||
* @param currentInput
|
||||
* @return {number}
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||||
*
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||||
*/
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||||
function getMaxLength(currentInput) {
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var max = currentInput.attr('maxlength');
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if (options.customMaxAttribute) {
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var custom = currentInput.attr(options.customMaxAttribute);
|
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if (!max || custom < max) {
|
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max = custom;
|
||||
}
|
||||
}
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||||
|
||||
if (!max) {
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||||
max = currentInput.attr('size');
|
||||
}
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||||
return max;
|
||||
}
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||||
|
||||
return this.each(function () {
|
||||
|
||||
var currentInput = $(this),
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maxLengthCurrentInput,
|
||||
maxLengthIndicator;
|
||||
|
||||
$(window).resize(function () {
|
||||
if (maxLengthIndicator) {
|
||||
place(currentInput, maxLengthIndicator);
|
||||
}
|
||||
});
|
||||
|
||||
function firstInit() {
|
||||
var maxlengthContent = updateMaxLengthHTML(currentInput.val(), maxLengthCurrentInput, '0');
|
||||
maxLengthCurrentInput = getMaxLength(currentInput);
|
||||
|
||||
if (!maxLengthIndicator) {
|
||||
maxLengthIndicator = $('<span class="bootstrap-maxlength"></span>').css({
|
||||
display: 'none',
|
||||
position: 'absolute',
|
||||
whiteSpace: 'nowrap',
|
||||
zIndex: 1099
|
||||
}).html(maxlengthContent);
|
||||
}
|
||||
|
||||
// We need to detect resizes if we are dealing with a textarea:
|
||||
if (currentInput.is('textarea')) {
|
||||
currentInput.data('maxlenghtsizex', currentInput.outerWidth());
|
||||
currentInput.data('maxlenghtsizey', currentInput.outerHeight());
|
||||
|
||||
currentInput.mouseup(function () {
|
||||
if (currentInput.outerWidth() !== currentInput.data('maxlenghtsizex') || currentInput.outerHeight() !== currentInput.data('maxlenghtsizey')) {
|
||||
place(currentInput, maxLengthIndicator);
|
||||
}
|
||||
|
||||
currentInput.data('maxlenghtsizex', currentInput.outerWidth());
|
||||
currentInput.data('maxlenghtsizey', currentInput.outerHeight());
|
||||
});
|
||||
}
|
||||
|
||||
if (options.appendToParent) {
|
||||
currentInput.parent().append(maxLengthIndicator);
|
||||
currentInput.parent().css('position', 'relative');
|
||||
} else {
|
||||
documentBody.append(maxLengthIndicator);
|
||||
}
|
||||
|
||||
var remaining = remainingChars(currentInput, getMaxLength(currentInput));
|
||||
manageRemainingVisibility(remaining, currentInput, maxLengthCurrentInput, maxLengthIndicator);
|
||||
place(currentInput, maxLengthIndicator);
|
||||
}
|
||||
|
||||
if (options.showOnReady) {
|
||||
currentInput.ready(function () {
|
||||
firstInit();
|
||||
});
|
||||
} else {
|
||||
currentInput.focus(function () {
|
||||
firstInit();
|
||||
});
|
||||
}
|
||||
|
||||
currentInput.on('maxlength.reposition', function () {
|
||||
place(currentInput, maxLengthIndicator);
|
||||
});
|
||||
|
||||
|
||||
currentInput.on('destroyed', function () {
|
||||
if (maxLengthIndicator) {
|
||||
maxLengthIndicator.remove();
|
||||
}
|
||||
});
|
||||
|
||||
currentInput.on('blur', function () {
|
||||
if (maxLengthIndicator && !options.showOnReady) {
|
||||
maxLengthIndicator.remove();
|
||||
}
|
||||
});
|
||||
|
||||
currentInput.on('input', function () {
|
||||
var maxlength = getMaxLength(currentInput),
|
||||
remaining = remainingChars(currentInput, maxlength),
|
||||
output = true;
|
||||
|
||||
if (options.validate && remaining < 0) {
|
||||
truncateChars(currentInput, maxlength);
|
||||
output = false;
|
||||
} else {
|
||||
manageRemainingVisibility(remaining, currentInput, maxLengthCurrentInput, maxLengthIndicator);
|
||||
}
|
||||
|
||||
if (isPlacementMutable()) {
|
||||
place(currentInput, maxLengthIndicator);
|
||||
}
|
||||
|
||||
return output;
|
||||
});
|
||||
});
|
||||
}
|
||||
});
|
||||
}(jQuery));
|
||||
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