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/*

* LivePreview jQuery Plugin v1.0

*

* Copyright (c) 2009 Phil Haack, [link]

* Licensed under the MIT license.

*/

(function($) {

$.fn.livePreview = function(options) {

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

var previewMaxIndex = opts.previewElement.length - 1;

opts.allowedTags = opts.allowedTags.concat(opts.allowedTagsWithEquals);

var allowedTagsRegExp = new RegExp("\\[(/?(((" + opts.allowedTagsWithEquals.join("|") + ")=[a-zA-Z0-9]+)|(" + opts.allowedTags.join("|") + "))(\\s+.*?)?)\\]", "g");

return this.each(function(i) {

var textarea = $(this);

var preview = $(opts.previewElement[Math.min(i, previewMaxIndex)]);

textarea.handleKeyUp = function() {

textarea.unbind('keyup', textarea.handleKeyUp);

if (!preview.updatingPreview) {

preview.updatingPreview = true;

window.setTimeout(function() { textarea.reloadPreview() }, opts.interval);

}

return false;

};

textarea.htmlUnencode = function(s) {

return s.replace(/&/g, "&");

};

textarea.reloadPreview = function() {

var previewString = this.val();

if (previewString.length > 0) {

//

previewString = this.htmlUnencode(previewString);

previewString = previewString.replace(opts.paraRegExp, "<p>$1</p><p>$2</p>");

previewString = previewString.replace(opts.lineBreakRegExp, "$1<br />$2");

previewString = previewString.replace(opts.colorRegExp, '<span style="color:$4">$6</span>');

previewString = previewString.replace(opts.sizeRegExp, '<span style="font-size:$4">$6</span>');

previewString = previewString.replace(allowedTagsRegExp, "<$1>");

}

try {

// Workaround for a bug in jquery 1.3.2 which is fixed in 1.4

preview[0].innerHTML = previewString;

}

catch (e) {

alert("Sorry, but inserting a block element within is not allowed here.");

}

preview.updatingPreview = false;

this.bind('keyup', this.handleKeyUp);

};

textarea.reloadPreview();

});

};

$.fn.livePreview.defaults = {

paraRegExp: new RegExp("(.*)\n\n([^#*\n\n].*)", "g"),

lineBreakRegExp: new RegExp("(.*)\n([^#*\n].*)", "g"),

colorRegExp: new RegExp("(\\[)(color)(=)([a-zA-Z0-9]+)(\\])(.*?)(\\[/color\\])", "g"),

sizeRegExp:new RegExp("(\\[)(size)(=)([0-9]+)(\\])(.*?)(\\[/size\\])", "g"),

allowedTags: ['a', 'b', 'strong', 'blockquote', 'p', 'i', 'em', 'u', 'strike', 'super', 'sub', 'code'],

interval: 80

};

})(jQuery);