/**
* Feedback Floating Badge
*
* Display a floating Feedback Badge on page
*
* @author Dumitru Glavan
* @link http://dumitruglavan.com
* @version 1.0
* @requires jQuery v1.3.2 or later
*
* Examples and documentation at: http://dumitruglavan.com/jquery-feedback-badge/
* Official jQuery plugin page: http://plugins.jquery.com/project/feedback-badge
* Find source on GitHub: https://github.com/doomhz/jQuery-Feedback-Badge
*
* Dual licensed under the MIT and GPL licenses:
*   http://www.opensource.org/licenses/mit-license.php
*   http://www.gnu.org/licenses/gpl.html
*
*/
;(function ($) {
	$.fn.feedbackBadge = function (options) {
		this.config = {css: {'position':'absolute',
							 'float':'left',
							 'display':'none',
							 'zIndex':'999'
							},
					   'animate':false,
					   'css3Safe':false,
					   'float':'left'
					  };
		$.extend(this.config, options);
		this.config.css.float = this.config.float;

		this.window = $(window);
		var self = this;

		if (this.config.css3Safe) {
			this.badgeHeight = this.height();
			this.windowHeight = self.window.height();
			this.topDistance = ~~(+ (this.windowHeight - this.badgeHeight) / 2);//parseInt((this.windowHeight - this.badgeHeight) / 2);
			this.config.css.position = 'absolute';

			if (typeof(this.config.css.marginTop) == 'undefined') {
				this.config.css.marginTop = this.getTopMiddleDistance(true);
			}

			if (this.config.animate) {
				self.window.scroll(function () {
					self.stop().animate({'margin-top': self.getTopMiddleDistance(true)}, 1000);
				});
			} else {
				self.window.scroll(function () {
					self.css('margin-top', self.getTopMiddleDistance(true));
				});
			}

			self.window.resize(function () {
				self.badgeHeight = self.height();
				self.windowHeight = self.window.height();
				self.topDistance = ~~(+ (self.windowHeight - self.badgeHeight) / 2);//parseInt((self.windowHeight - self.badgeHeight) / 2);
				self.css('margin-top', self.getTopMiddleDistance(true));
			});
		} else {
			this.config.css.position = 'fixed';
			if (typeof(this.config.css.top) == 'undefined') {
				this.config.css.top = this.getTopMiddleDistance();
			}
		}

		if (typeof(this.config.onClick) == 'function') {
			$(this).bind('click', this.config.onClick);
		}

		$(this).css(this.config.css).prependTo('body').show();

		return this;
	},

	$.fn.getTopMiddleDistance = function (inPixels) {
		if (inPixels) {
			return (this.topDistance + this.window.scrollTop() + 'px');
		} else {
			var badgeHeightPerc = $(this).height() * 100 / this.window.height();
			return ~~(+ (100 - badgeHeightPerc) / 2) + '%';//parseInt((100 - badgeHeightPerc) / 2) + '%';
		}
	}
})(jQuery);