https://electroniger.com/modules/tvcmsproductcomments/views/js/jquery.textareaCounter.plugin.js

1/**
2* 2007-2025 PrestaShop
3*
4* NOTICE OF LICENSE
5*
6* This source file is subject to the Academic Free License (AFL 3.0)
7* that is bundled with this package in the file LICENSE.txt.
8* It is also available through the world-wide-web at this URL:
9* http://opensource.org/licenses/afl-3.0.php
10* If you did not receive a copy of the license and are unable to
11* obtain it through the world-wide-web, please send an email
12* to [email protected] so we can send you a copy immediately.
13*
14* DISCLAIMER
15*
16* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
17* versions in the future. If you wish to customize PrestaShop for your
18* needs please refer to http://www.prestashop.com for more information.
19*
20*  @author PrestaShop SA <[email protected]>
21*  @copyright  2007-2025 PrestaShop SA
22*  @license    http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
23*  International Registered Trademark & Property of PrestaShop SA
24*/
25
26(function($){  
27	$.fn.textareaCount = function(options, fn) {   
28		var defaults = {  
29			maxCharacterSize: -1,  
30			originalStyle: 'originalTextareaInfo',
31			warningStyle: 'warningTextareaInfo',  
32			warningNumber: 20,
33			displayFormat: '#input characters | #words words'
34		};  
35		var options = $.extend(defaults, options);
36		
37		var container = $(this);
38		
39		$("<div class='charleft'>&nbsp;</div>").insertAfter(container);
40		
41		//create charleft css
42		var charLeftCss = {
43			'width' : container.width()
44		};
45		
46		var charLeftInfo = getNextCharLeftInformation(container);
47		charLeftInfo.addClass(options.originalStyle);
48		charLeftInfo.css(charLeftCss);
49		
50		var numInput = 0;
51		var maxCharacters = options.maxCharacterSize;
52		var numLeft = 0;
53		var numWords = 0;
54				
55		container.bind('keyup', function(event){limitTextAreaByCharacterCount();})
56				 .bind('mouseover', function(event){setTimeout(function(){limitTextAreaByCharacterCount();}, 10);})
57				 .bind('paste', function(event){setTimeout(function(){limitTextAreaByCharacterCount();}, 10);});
58		
59		
60		function limitTextAreaByCharacterCount(){
61			charLeftInfo.html(countByCharacters());
62			//function call back
63			if(typeof fn != 'undefined'){
64				fn.call(this, getInfo());
65			}
66			return true;
67		}
68		
69		function countByCharacters(){
70			var content = container.val();
71			var contentLength = content.length;
72			
73			//Start Cut
74			if(options.maxCharacterSize > 0){
75				//If copied content is already more than maxCharacterSize, chop it to maxCharacterSize.
76				if(contentLength >= options.maxCharacterSize) {
77					content = content.substring(0, options.maxCharacterSize); 				
78				}
79				
80				var newlineCount = getNewlineCount(content);
81				
82				// newlineCount new line character. For windows, it occupies 2 characters
83				var systemmaxCharacterSize = options.maxCharacterSize - newlineCount;
84				if (!isWin()){
85					 systemmaxCharacterSize = options.maxCharacterSize
86				}
87				if(contentLength > systemmaxCharacterSize){
88					//avoid scroll bar moving
89					var originalScrollTopPosition = this.scrollTop;
90					container.val(content.substring(0, systemmaxCharacterSize));
91					this.scrollTop = originalScrollTopPosition;
92				}
93				charLeftInfo.removeClass(options.warningStyle);
94				if(systemmaxCharacterSize - contentLength <= options.warningNumber){
95					charLeftInfo.addClass(options.warningStyle);
96				}
97				
98				numInput = container.val().length + newlineCount;
99				if(!isWin()){
100					numInput = container.val().length;
101				}
102			
103				numWords = countWord(getCleanedWordString(container.val()));
104				
105				numLeft = maxCharacters - numInput;
106			} else {
107				//normal count, no cut
108				var newlineCount = getNewlineCount(content);
109				numInput = container.val().length + newlineCount;
110				if(!isWin()){
111					numInput = container.val().length;
112				}
113				numWords = countWord(getCleanedWordString(container.val()));
114			}
115			
116			return formatDisplayInfo();
117		}
118		
119		function formatDisplayInfo(){
120			var format = options.displayFormat;
121			format = format.replace('#input', numInput);
122			format = format.replace('#words', numWords);
123			//When maxCharacters <= 0, #max, #left cannot be substituted.
124			if(maxCharacters > 0){
125				format = format.replace('#max', maxCharacters);
126				format = format.replace('#left', numLeft);
127			}
128			return format;
129		}
130		
131		function getInfo(){
132			var info = {
133				input: numInput,
134				max: maxCharacters,
135				left: numLeft,
136				words: numWords
137			};
138			return info;
139		}
140		
141		function getNextCharLeftInformation(container){
142				return container.next('.charleft');
143		}
144		
145		function isWin(){
146			var strOS = navigator.appVersion;
147			if (strOS.toLowerCase().indexOf('win') != -1){
148				return true;
149			}
150			return false;

151		}
152		
153		function getNewlineCount(content){
154			var newlineCount = 0;
155			for(var i=0; i<content.length;i++){
156				if(content.charAt(i) == '\n'){
157					newlineCount++;
158				}
159			}
160			return newlineCount;
161		}
162		
163		function getCleanedWordString(content){
164			var fullStr = content + " ";
165			var initial_whitespace_rExp = /^[^A-Za-z0-9]+/gi;
166			var left_trimmedStr = fullStr.replace(initial_whitespace_rExp, "");
167			var non_alphanumerics_rExp = rExp = /[^A-Za-z0-9]+/gi;
168			var cleanedStr = left_trimmedStr.replace(non_alphanumerics_rExp, " ");
169			var splitString = cleanedStr.split(" ");
170			return splitString;
171		}
172		
173		function countWord(cleanedWordString){
174			var word_count = cleanedWordString.length-1;
175			return word_count;
176		}
177	};  
178})(jQuery);