/**
* limitCharWidth 0.6 - Limit inner text to adjust to container width
*
* history
* : 2009-04-05 ver0.6 - Bugfix: previouse version hasn't work on IE.
* : 2009-04-05 ver0.5 - Spaces at the end of collapsed string is trimed
Some code improvement
* : 2009-03-04 ver0.4 - Now the container needs not necessarily to be set
whiteSpace to nowrap
* : 2009-02-27 ver0.3 - Fixed a bug that occured when the target isn't a block
* : 2009-02-01 ver0.2 - Fixed a bug that this didn't work on IE6 without width
parameter.
* : 2009-01-28 ver0.1 - Initial release
*
* Copyright (c) 2008 Sugama Keita (http://jamadam.com/blog/)
*
* Dual licensed under the MIT and GPL licenses:
*   http://www.opensource.org/licenses/mit-license.php
*   http://www.gnu.org/licenses/gpl.html
*/
; (function($) {

    var attr_name;

    $(document).ready(function() {

        attr_name =
            (typeof $('body').get(0).innerText != "undefined")
                ? 'innerText'
                :
            (typeof $('body').get(0).textContent != "undefined")
                ? 'textContent'
                : null;
    });

    $.fn.extend({

        unlimitCharWidth: function() {

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

                $(this).attr(attr_name, $.data(this, 'limitCharWidth'));
            });
        },

        limitCharWidth: function(args) {

            args =
				$.extend({
				    alternative: '...',
				    width: null,
				    set_title: false
				}, args || {});

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

                var current = $(this).attr(attr_name);

                // Set original content to title
                if (!this.title && args.set_title) {
                    this.title = $.trim(current);
                }

                // Save original data
                if (!$.data(this, 'limitCharWidth')) {
                    $.data(this, 'limitCharWidth', current);
                }

                var org = $.data(this, 'limitCharWidth');

                var width = args.width;

                if (!width) {
                    if ($(this).css('display') == 'block') {
                        width = $(this).attr(attr_name, '').width();
                    } else {
                        return $(this);
                    }
                }

                $(this).attr(attr_name, org);

                var oldWhiteSpaceSetting = $(this).css('whiteSpace');
                $(this).css({ whiteSpace: 'nowrap' });

                var dummyspan = $(this).wrapInner('<span></span>').find('span');

                /*
                dummyspan.css({
                fontSize        : $(this).css('fontSize'),
                fontWeight      : $(this).css('fontWeight'),
                fontFamily      : $(this).css('fontFamily'),
                wordSpacing     : $(this).css('wordSpacing'),
                textIndent      : $(this).css('textIndent'),
                textTransform   : $(this).css('textTransform'),
                letterSpacing   : $(this).css('letterSpacing'),
                whiteSpace      : $(this).css('whiteSpace')
                });
                */

                if (dummyspan.width() > width) {
                    dummyspan.attr(attr_name,
						dummyspan.attr(attr_name) + args.alternative);
                }

                while (dummyspan.width() > width) {

                    var newcontent =
						dummyspan.attr(attr_name)
							.slice(0, -1 * (args.alternative.length + 1));

                    newcontent = $.trim(newcontent);

                    if (newcontent) {
                        dummyspan.attr(attr_name, newcontent + args.alternative);
                    } else {
                        dummyspan.attr(attr_name, '');
                        break;
                    }
                }

                $(this).css({ whiteSpace: oldWhiteSpaceSetting });

                // remove dummy span
                $(this).attr(attr_name, dummyspan.attr(attr_name));
            });
        }
    });
})(jQuery);