| 6056 |
efrain |
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(function($) {
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"use strict";
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if (!$.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 = $("body"), defaults = {
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showOnReady: false,
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alwaysShow: true,
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threshold: 0,
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warningClass: "small form-text text-muted",
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limitReachedClass: "small form-text text-danger",
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limitExceededClass: "",
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separator: " / ",
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preText: "",
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postText: "",
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showMaxLength: true,
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placement: "bottom-right-inside",
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message: null,
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showCharsTyped: true,
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validate: false,
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utf8: false,
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appendToParent: false,
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twoCharLinebreak: true,
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customMaxAttribute: null,
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customMaxClass: "overmax",
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allowOverMax: false,
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zIndex: 1099
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};
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if ($.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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function utf8CharByteCount(character) {
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var c = character.charCodeAt();
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return !c ? 0 : c < 128 ? 1 : c < 2048 ? 2 : 3;
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}
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function utf8Length(string) {
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return string.split("").map(utf8CharByteCount).concat(0).reduce((function(sum, val) {
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return sum + val;
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}));
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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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text = text.replace(/\r(?!\n)|\n(?!\r)/g, "\r\n");
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} else {
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text = text.replace(/(?:\r\n|\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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if (input.prop("type") === "file" && input.val() !== "") {
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currentLength -= 12;
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}
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return currentLength;
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}
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function truncateChars(input, maxlength) {
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var text = input.val();
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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[text.length - 1] === "\n") {
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maxlength -= text.length % 2;
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}
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}
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if (options.utf8) {
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var indexedSize = text.split("").map(utf8CharByteCount);
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for (var removedBytes = 0, bytesPastMax = utf8Length(text) - maxlength; removedBytes < bytesPastMax; removedBytes += indexedSize.pop()) ;
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maxlength -= maxlength - indexedSize.length;
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}
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input.val(text.substr(0, maxlength));
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}
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function charsLeftThreshold(input, threshold, maxlength) {
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var output = true;
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if (!options.alwaysShow && maxlength - inputLength(input) > threshold) {
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output = false;
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}
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return output;
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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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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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function hideRemaining(currentInput, indicator) {
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if (options.alwaysShow) {
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return;
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}
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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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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).replace("%charsRemaining%", maxLengthThisInput - typedChars).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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} 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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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 + " " + options.limitExceededClass).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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if (!options.limitExceededClass) {
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showRemaining(currentInput, maxLengthIndicator.removeClass(options.warningClass).addClass(options.limitReachedClass));
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} else {
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if (remaining === 0) {
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showRemaining(currentInput, maxLengthIndicator.removeClass(options.warningClass + " " + options.limitExceededClass).addClass(options.limitReachedClass));
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} else {
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showRemaining(currentInput, maxLengthIndicator.removeClass(options.warningClass + " " + options.limitReachedClass).addClass(options.limitExceededClass));
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}
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}
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}
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}
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if (options.customMaxAttribute) {
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if (remaining < 0) {
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currentInput.addClass(options.customMaxClass);
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} else {
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currentInput.removeClass(options.customMaxClass);
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}
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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 $.extend({}, typeof el.getBoundingClientRect === "function" ? el.getBoundingClientRect() : {
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width: el.offsetWidth,
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height: el.offsetHeight
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}, currentInput.offset());
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}
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function placeWithCSS(placement, maxLengthIndicator) {
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if (!placement || !maxLengthIndicator) {
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return;
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}
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var POSITION_KEYS = [ "top", "bottom", "left", "right", "position" ];
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var cssPos = {};
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$.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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function place(currentInput, maxLengthIndicator) {
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var pos = getPosition(currentInput);
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if ($.type(options.placement) === "function") {
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options.placement(currentInput, maxLengthIndicator, pos);
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return;
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}
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if ($.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(), outerWidth = maxLengthIndicator.outerWidth(), actualWidth = maxLengthIndicator.width(), actualHeight = maxLengthIndicator.height();
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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({
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top: pos.top + pos.height,
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left: pos.left + pos.width / 2 - actualWidth / 2
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});
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break;
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case "top":
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maxLengthIndicator.css({
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top: pos.top - actualHeight,
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left: pos.left + pos.width / 2 - actualWidth / 2
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});
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break;
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case "left":
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maxLengthIndicator.css({
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top: pos.top + pos.height / 2 - actualHeight / 2,
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left: pos.left - actualWidth
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});
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break;
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case "right":
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maxLengthIndicator.css({
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top: pos.top + pos.height / 2 - actualHeight / 2,
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left: pos.left + pos.width
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});
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break;
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case "bottom-right":
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maxLengthIndicator.css({
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top: pos.top + pos.height,
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left: pos.left + pos.width
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});
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break;
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case "top-right":
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maxLengthIndicator.css({
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top: pos.top - actualHeight,
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left: pos.left + inputOuter
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});
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break;
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case "top-left":
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maxLengthIndicator.css({
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top: pos.top - actualHeight,
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left: pos.left - outerWidth
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});
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break;
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case "bottom-left":
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maxLengthIndicator.css({
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top: pos.top + currentInput.outerHeight(),
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left: pos.left - outerWidth
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});
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break;
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case "centered-right":
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maxLengthIndicator.css({
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top: pos.top + actualHeight / 2,
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left: pos.left + inputOuter - outerWidth - 3
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});
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break;
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case "bottom-right-inside":
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maxLengthIndicator.css({
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top: pos.top + pos.height,
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left: pos.left + pos.width - outerWidth
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});
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break;
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case "top-right-inside":
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maxLengthIndicator.css({
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top: pos.top - actualHeight,
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left: pos.left + inputOuter - outerWidth
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});
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break;
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case "top-left-inside":
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maxLengthIndicator.css({
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top: pos.top - actualHeight,
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left: pos.left
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});
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break;
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case "bottom-left-inside":
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maxLengthIndicator.css({
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top: pos.top + currentInput.outerHeight(),
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left: pos.left
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});
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break;
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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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function getMaxLength(currentInput) {
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var max = currentInput.attr("maxlength") || options.customMaxAttribute;
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if (options.customMaxAttribute && !options.allowOverMax) {
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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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}
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}
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if (!max) {
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max = currentInput.attr("size");
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}
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return max;
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}
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311 |
return this.each((function() {
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var currentInput = $(this), maxLengthCurrentInput, maxLengthIndicator;
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$(window).resize((function() {
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if (maxLengthIndicator) {
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315 |
place(currentInput, maxLengthIndicator);
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}
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}));
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function firstInit() {
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var maxlengthContent = updateMaxLengthHTML(currentInput.val(), maxLengthCurrentInput, "0");
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320 |
maxLengthCurrentInput = getMaxLength(currentInput);
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if (!maxLengthIndicator) {
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maxLengthIndicator = $('<span class="bootstrap-maxlength"></span>').css({
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display: "none",
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position: "absolute",
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whiteSpace: "nowrap",
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zIndex: options.zIndex
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327 |
}).html(maxlengthContent);
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}
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329 |
if (currentInput.is("textarea")) {
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330 |
currentInput.data("maxlenghtsizex", currentInput.outerWidth());
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331 |
currentInput.data("maxlenghtsizey", currentInput.outerHeight());
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332 |
currentInput.mouseup((function() {
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333 |
if (currentInput.outerWidth() !== currentInput.data("maxlenghtsizex") || currentInput.outerHeight() !== currentInput.data("maxlenghtsizey")) {
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334 |
place(currentInput, maxLengthIndicator);
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335 |
}
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336 |
currentInput.data("maxlenghtsizex", currentInput.outerWidth());
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337 |
currentInput.data("maxlenghtsizey", currentInput.outerHeight());
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338 |
}));
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339 |
}
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340 |
if (options.appendToParent) {
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341 |
currentInput.parent().append(maxLengthIndicator);
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342 |
currentInput.parent().css("position", "relative");
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343 |
} else {
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344 |
documentBody.append(maxLengthIndicator);
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345 |
}
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346 |
var remaining = remainingChars(currentInput, getMaxLength(currentInput));
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347 |
manageRemainingVisibility(remaining, currentInput, maxLengthCurrentInput, maxLengthIndicator);
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348 |
place(currentInput, maxLengthIndicator);
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349 |
}
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350 |
if (options.showOnReady) {
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351 |
currentInput.ready((function() {
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352 |
firstInit();
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353 |
}));
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354 |
} else {
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355 |
currentInput.focus((function() {
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356 |
firstInit();
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357 |
}));
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358 |
}
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359 |
currentInput.on("maxlength.reposition", (function() {
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360 |
place(currentInput, maxLengthIndicator);
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361 |
}));
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362 |
currentInput.on("destroyed", (function() {
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363 |
if (maxLengthIndicator) {
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|
364 |
maxLengthIndicator.remove();
|
|
|
365 |
}
|
|
|
366 |
}));
|
|
|
367 |
currentInput.on("blur", (function() {
|
|
|
368 |
if (maxLengthIndicator && !options.showOnReady) {
|
|
|
369 |
maxLengthIndicator.remove();
|
|
|
370 |
}
|
|
|
371 |
}));
|
|
|
372 |
currentInput.on("input", (function() {
|
|
|
373 |
var maxlength = getMaxLength(currentInput), remaining = remainingChars(currentInput, maxlength), output = true;
|
|
|
374 |
if (options.validate && remaining < 0) {
|
|
|
375 |
truncateChars(currentInput, maxlength);
|
|
|
376 |
output = false;
|
|
|
377 |
} else {
|
|
|
378 |
manageRemainingVisibility(remaining, currentInput, maxLengthCurrentInput, maxLengthIndicator);
|
|
|
379 |
}
|
|
|
380 |
return output;
|
|
|
381 |
}));
|
|
|
382 |
}));
|
|
|
383 |
}
|
|
|
384 |
});
|
|
|
385 |
})(jQuery);
|