/*

 * jQuery Input Limiter plugin 1.3.1

 * http://rustyjeans.com/jquery-plugins/input-limiter/

 *

 * Copyright (c) 2009 Russel Fones <russel@rustyjeans.com>

 *

 * Permission is hereby granted, free of charge, to any person

 * obtaining a copy of this software and associated documentation

 * files (the "Software"), to deal in the Software without

 * restriction, including without limitation the rights to use,

 * copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following

 * conditions:

 *

 * The above copyright notice and this permission notice shall be

 * included in all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

 * OTHER DEALINGS IN THE SOFTWARE.

 */



(function ($) {

	$.fn.inputlimiter = function (options) {

		var opts = $.extend({}, $.fn.inputlimiter.defaults, options),

			$elements = $(this);

		if (opts.boxAttach && !$('#' + opts.boxId).length) {

			$('<div/>').appendTo("body").attr({id: opts.boxId, 'class': opts.boxClass}).css({'position': 'absolute'}).hide();

			// apply bgiframe if available

			if ($.fn.bgiframe) {

				$('#' + opts.boxId).bgiframe();

			}

		}



		var inputlimiterKeyup = function (e) {

			var $this = $(this),

				count = counter($this.val());

			if (!opts.allowExceed && count > opts.limit) {

				$this.val(truncater($this.val()));

			}

			if (opts.boxAttach) {

				$('#' + opts.boxId).css({

					'width': $this.outerWidth() - ($('#' + opts.boxId).outerWidth() - $('#' + opts.boxId).width()) + 'px',

					'left': $this.offset().left + 'px',

					'top': ($this.offset().top + $this.outerHeight()) - 1 + 'px',

					'z-index': 2000

				});

			}

			var charsRemaining = (opts.limit - count > 0 ? opts.limit - count : 0),

				remText = opts.remTextFilter(opts, charsRemaining),

				limitText = opts.limitTextFilter(opts);



			if (opts.limitTextShow) {

				$('#' + opts.boxId).html(remText + ' ' + limitText);

				// Check to see if the text is wrapping in the box

				// If it is lets break it between the remaining test and the limit test

				var textWidth = $("<span/>").appendTo("body").attr({id: '19cc9195583bfae1fad88e19d443be7a', 'class': opts.boxClass}).html(remText + ' ' + limitText).innerWidth();

				$("#19cc9195583bfae1fad88e19d443be7a").remove();

				if (textWidth > $('#' + opts.boxId).innerWidth()) {

					$('#' + opts.boxId).html(remText + '<br />' + limitText);

				}

				// Show the limiter box

				$('#' + opts.boxId).show();

			} else {

				$('#' + opts.boxId).html(remText).show();

			}

		},



		inputlimiterKeypress = function (e) {

			var count = counter($(this).val());

			if (!opts.allowExceed && count > opts.limit) {

				var modifierKeyPressed = e.ctrlKey || e.altKey || e.metaKey;

				if (!modifierKeyPressed && (e.which >= 32 && e.which <= 122) && this.selectionStart === this.selectionEnd) {

					return false;

				}

			}

		},



		inputlimiterBlur = function () {

			var $this = $(this);

				count = counter($this.val());

			if (!opts.allowExceed && count > opts.limit) {

				$this.val(truncater($this.val()));

			}

			if (opts.boxAttach) {

				$('#' + opts.boxId).fadeOut('fast');

			} else if (opts.remTextHideOnBlur) {

				var limitText = opts.limitText;

				limitText = limitText.replace(/\%n/g, opts.limit);

				limitText = limitText.replace(/\%s/g, (opts.limit === 1 ? '' : 's'));

				$('#' + opts.boxId).html(limitText);

			}

		},



		counter = function (value) {

			if (opts.limitBy.toLowerCase() === "words") {

				return (value.length > 0 ? $.trim(value).replace(/\ +(?= )/g, '').split(' ').length : 0);

			}

			var count = value.length,

				newlines = value.match(/\n/g);

			if (newlines && opts.lineReturnCount > 1) {

				count += newlines.length * (opts.lineReturnCount - 1);

			}

			return count;

		},



		truncater = function (value) {

			if (opts.limitBy.toLowerCase() === "words") {

				return $.trim(value).replace(/\ +(?= )/g, '').split(' ').splice(0, opts.limit).join(' ') + ' ';

			}

			return value.substring(0, opts.limit);

		};



		$(this).each(function (i) {

			var $this = $(this);

			if ((!options || !options.limit) && opts.useMaxlength && parseInt($this.attr('maxlength')) > 0 && parseInt($this.attr('maxlength')) != opts.limit) {

				$this.inputlimiter($.extend({}, opts, { limit: parseInt($this.attr('maxlength')) }));

			} else {

				if (!opts.allowExceed && opts.useMaxlength && opts.limitBy.toLowerCase() === "characters") {

					$this.attr('maxlength', opts.limit);

				}

				$this.unbind('.inputlimiter');

				$this.bind('keyup.inputlimiter', inputlimiterKeyup);

				$this.bind('keypress.inputlimiter', inputlimiterKeypress);

				$this.bind('blur.inputlimiter', inputlimiterBlur);

			}

		});

	};



	$.fn.inputlimiter.remtextfilter = function (opts, charsRemaining) {

		var remText = opts.remText;

		if (charsRemaining === 0 && opts.remFullText !== null) {

			remText = opts.remFullText;

		}

		remText = remText.replace(/\%n/g, charsRemaining);

		remText = remText.replace(/\%s/g, (opts.zeroPlural ? (charsRemaining === 1 ? '' : 's') : (charsRemaining <= 1 ? '' : 's')));

		return remText;

	};



	$.fn.inputlimiter.limittextfilter = function (opts) {

		var limitText = opts.limitText;

		limitText = limitText.replace(/\%n/g, opts.limit);

		limitText = limitText.replace(/\%s/g, (opts.limit <= 1 ? '' : 's'));

		return limitText;

	};



	$.fn.inputlimiter.defaults = {

		limit: 255,

		boxAttach: true,

		boxId: 'limiterBox',

		boxClass: 'limiterBox',

		remText: '%n character%s remaining.',

		remTextFilter: $.fn.inputlimiter.remtextfilter,

		remTextHideOnBlur: true,

		remFullText: null,

		limitTextShow: true,

		limitText: 'Field limited to %n character%s.',

		limitTextFilter: $.fn.inputlimiter.limittextfilter,

		zeroPlural: true,

		allowExceed: false,

		useMaxlength: true,

		limitBy: 'characters',

		lineReturnCount: 1

	};



})(jQuery);

