/*****************************************************************************
 j Query Plac*eholder 1.1.1
 
 Copyright (c) 2010 Michael J. Ryan (http://tracker1.info/)
 
 Dual licensed under the MIT and GPL licenses:
 http://www.opensource.org/licenses/mit-license.php
 http://www.gnu.org/licenses/gpl.html
 
 ------------------------------------------------------------------------------
 
 Sets up a watermark for inputted fields... this will create a LABEL.watermark
 tag immediately following the input tag, the positioning will be set absolute,
 and it will be positioned to match the input tag.
 
 To activate on all tags with a 'data-watermark' attribute:
 
 $('input[placeholder],textarea[placeholder]').placeholder();
 
 
 To style the tags as appropriate (you'll want to make sure the font matches):
 
 label.placeholder {
	 cursor: text;				<--- display a cursor to match the text input
	 
	 padding: 4px 4px 4px 4px;   <--- this should match the border+padding
	 for the input field(s)
		 color: #999999;				<--- this will display as faded
		 }
		 
		 You'll also want to have the color set for browsers with native support
		 input:placeholder, textarea:placeholder {
			 color: #999999;
		 }
		 input::-webkit-input-placeholder, textarea::-webkit-input-placeholder {
			 color: #999999;
		 }
		 
		 ------------------------------------------------------------------------------
		 
		 Thanks to...
		 http://www.alistapart.com/articles/makingcompactformsmoreaccessible
		 http://plugins.jquery.com/project/overlabel
		 
		 This works similar to the overlabel, but creates the actual label tag
		 based on a data-watermark attribute on the input tag, instead of
		 relying on the markup to provide it.
		 
		 *****************************************************************************/
(function($){
	
	var ph = "PLACEHOLDER-INPUT";
	var phl = "PLACEHOLDER-LABEL";
	var boundEvents = false;
	var default_options = {
		labelClass: 'placeholder'
	};
	
	//check for native support for placeholder attribute, if so stub methods and return
	var input = document.createElement("input");
	if ('placeholder' in input) {
		$.fn.placeholder = $.fn.unplaceholder = function(){}; //empty function
		delete input; //cleanup IE memory
		return;
	};
	delete input;
	
	$.fn.placeholder = function(options) {
		bindEvents();
		
		var opts = $.extend(default_options, options)
		
		this.each(function(){
			var rnd=Math.random().toString(32).replace(/\./,'')
			,input=$(this)
			,label=$('<label style="position:absolute;display:none;top:0;left:0;"></label>');
			
			if (!input.attr('placeholder') || input.data(ph) === ph) return; //already watermarked

			//make sure the input tag has an ID assigned, if not, assign one.
			if (!input.attr('id')) input.attr('id') = 'input_' + rnd;
					 
					 label	.attr('id',input.attr('id') + "_placeholder")
		.data(ph, '#' + input.attr('id'))	//reference to the input tag
		.attr('for',input.attr('id'))
		.addClass(opts.labelClass)
		.addClass(opts.labelClass + '-for-' + this.tagName.toLowerCase()) //ex: watermark-for-textarea
		.addClass(phl)
		.text(input.attr('placeholder'));
		
		input
		.data(phl, '#' + label.attr('id'))	//set a reference to the label
		.data(ph,ph)		//set that the field is watermarked
		.addClass(ph)		//add the watermark class
		.after(label);		//add the label field to the page
		
		//setup overlay
		itemIn.call(this);
		itemOut.call(this);
		});
	};
	
	$.fn.unplaceholder = function(){
		this.each(function(){
			var	input=$(this),
				  label=$(input.data(phl));
				  
				  if (input.data(ph) !== ph) return;
				  
				  label.remove();
				  input.removeData(ph).removeData(phl).removeClass(ph);
		});
	};
	
	
	function bindEvents() {
		if (boundEvents) return;
			  
			  //prepare live bindings if not already done.
		$('.' + ph)
		.live('click',itemIn)
		.live('focusin',itemIn)
		.live('focusout',itemOut);
		bound = true;
		
		boundEvents = true;
	};
	
	function itemIn() {
		var input = $(this)
		,label = $(input.data(phl));
		
		label.css('display', 'none');
	};
	
	function itemOut() {
		var that = this;
		
		//use timeout to let other validators/formatters directly bound to blur/focusout work first
		setTimeout(function(){
			var input = $(that);
			$(input.data(phl))
			.css('top', input.position().top + 'px')
			.css('left', input.position().left + 'px')
			.css('display', !!input.val() ? 'none' : 'block');
		}, 200);
	};
	
}(jQuery));

// tipsy, facebook style tooltips for jquery
// version 1.0.0a
// (c) 2008-2010 jason frame [jason@onehackoranother.com]
// released under the MIT license

(function($) {
    
    function maybeCall(thing, ctx) {
        return (typeof thing == 'function') ? (thing.call(ctx)) : thing;
    };
    
    function Tipsy(element, options) {
        this.$element = $(element);
        this.options = options;
        this.enabled = true;
        this.fixTitle();
    };
    
    Tipsy.prototype = {
        show: function() {
            var title = this.getTitle();
            if (title && this.enabled) {
                var $tip = this.tip();
                
                $tip.find('.tipsy-inner')[this.options.html ? 'html' : 'text'](title);
                $tip[0].className = 'tipsy'; // reset classname in case of dynamic gravity
                $tip.remove().css({top: 0, left: 0, visibility: 'hidden', display: 'block'}).prependTo(document.body);
                
                var pos = $.extend({}, this.$element.offset(), {
                    width: this.$element[0].offsetWidth,
                    height: this.$element[0].offsetHeight
                });
                
                var actualWidth = $tip[0].offsetWidth,
                    actualHeight = $tip[0].offsetHeight,
                    gravity = maybeCall(this.options.gravity, this.$element[0]);
                
                var tp;
                switch (gravity.charAt(0)) {
                    case 'n':
                        tp = {top: pos.top + pos.height + this.options.offset, left: pos.left + pos.width / 2 - actualWidth / 2};
                        break;
                    case 's':
                        tp = {top: pos.top - actualHeight - this.options.offset, left: pos.left + pos.width / 2 - actualWidth / 2};
                        break;
                    case 'e':
                        tp = {top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left - actualWidth - this.options.offset};
                        break;
                    case 'w':
                        tp = {top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left + pos.width + this.options.offset};
                        break;
                }
                
                if (gravity.length == 2) {
                    if (gravity.charAt(1) == 'w') {
                        tp.left = pos.left + pos.width / 2 - 15;
                    } else {
                        tp.left = pos.left + pos.width / 2 - actualWidth + 15;
                    }
                }
                
                $tip.css(tp).addClass('tipsy-' + gravity);
                $tip.find('.tipsy-arrow')[0].className = 'tipsy-arrow tipsy-arrow-' + gravity.charAt(0);
                if (this.options.className) {
                    $tip.addClass(maybeCall(this.options.className, this.$element[0]));
                }
                
                if (this.options.fade) {
                    $tip.stop().css({opacity: 0, display: 'block', visibility: 'visible'}).animate({opacity: this.options.opacity});
                } else {
                    $tip.css({visibility: 'visible', opacity: this.options.opacity});
                }
            }
        },
        
        hide: function() {
            if (this.options.fade) {
                this.tip().stop().fadeOut(function() { $(this).remove(); });
            } else {
                this.tip().remove();
            }
        },
        
        fixTitle: function() {
            var $e = this.$element;
            if ($e.attr('title') || typeof($e.attr('original-title')) != 'string') {
                $e.attr('original-title', $e.attr('title') || '').removeAttr('title');
            }
        },
        
        getTitle: function() {
            var title, $e = this.$element, o = this.options;
            this.fixTitle();
            var title, o = this.options;
            if (typeof o.title == 'string') {
                title = $e.attr(o.title == 'title' ? 'original-title' : o.title);
            } else if (typeof o.title == 'function') {
                title = o.title.call($e[0]);
            }
            title = ('' + title).replace(/(^\s*|\s*$)/, "");
            return title || o.fallback;
        },
        
        tip: function() {
            if (!this.$tip) {
                this.$tip = $('<div class="tipsy"></div>').html('<div class="tipsy-arrow"></div><div class="tipsy-inner"></div>');
            }
            return this.$tip;
        },
        
        validate: function() {
            if (!this.$element[0].parentNode) {
                this.hide();
                this.$element = null;
                this.options = null;
            }
        },
        
        enable: function() { this.enabled = true; },
        disable: function() { this.enabled = false; },
        toggleEnabled: function() { this.enabled = !this.enabled; }
    };
    
    $.fn.tipsy = function(options) {
        
        if (options === true) {
            return this.data('tipsy');
        } else if (typeof options == 'string') {
            var tipsy = this.data('tipsy');
            if (tipsy) tipsy[options]();
            return this;
        }
        
        options = $.extend({}, $.fn.tipsy.defaults, options);
        
        function get(ele) {
            var tipsy = $.data(ele, 'tipsy');
            if (!tipsy) {
                tipsy = new Tipsy(ele, $.fn.tipsy.elementOptions(ele, options));
                $.data(ele, 'tipsy', tipsy);
            }
            return tipsy;
        }
        
        function enter() {
            var tipsy = get(this);
            tipsy.hoverState = 'in';
            if (options.delayIn == 0) {
                tipsy.show();
            } else {
                tipsy.fixTitle();
                setTimeout(function() { if (tipsy.hoverState == 'in') tipsy.show(); }, options.delayIn);
            }
        };
        
        function leave() {
            var tipsy = get(this);
            tipsy.hoverState = 'out';
            if (options.delayOut == 0) {
                tipsy.hide();
            } else {
                setTimeout(function() { if (tipsy.hoverState == 'out') tipsy.hide(); }, options.delayOut);
            }
        };
        
        if (!options.live) this.each(function() { get(this); });
        
        if (options.trigger != 'manual') {
            var binder   = options.live ? 'live' : 'bind',
                eventIn  = options.trigger == 'hover' ? 'mouseenter' : 'focus',
                eventOut = options.trigger == 'hover' ? 'mouseleave' : 'blur';
            this[binder](eventIn, enter)[binder](eventOut, leave);
        }
        
        return this;
        
    };
    
    $.fn.tipsy.defaults = {
        className: null,
        delayIn: 0,
        delayOut: 0,
        fade: false,
        fallback: '',
        gravity: 'n',
        html: false,
        live: false,
        offset: 0,
        opacity: 0.8,
        title: 'title',
        trigger: 'hover'
    };
    
    // Overwrite this method to provide options on a per-element basis.
    // For example, you could store the gravity in a 'tipsy-gravity' attribute:
    // return $.extend({}, options, {gravity: $(ele).attr('tipsy-gravity') || 'n' });
    // (remember - do not modify 'options' in place!)
    $.fn.tipsy.elementOptions = function(ele, options) {
        return $.metadata ? $.extend({}, options, $(ele).metadata()) : options;
    };
    
    $.fn.tipsy.autoNS = function() {
        return $(this).offset().top > ($(document).scrollTop() + $(window).height() / 2) ? 's' : 'n';
    };
    
    $.fn.tipsy.autoWE = function() {
        return $(this).offset().left > ($(document).scrollLeft() + $(window).width() / 2) ? 'e' : 'w';
    };
    
    /**
     * yields a closure of the supplied parameters, producing a function that takes
     * no arguments and is suitable for use as an autogravity function like so:
     *
     * @param margin (int) - distance from the viewable region edge that an
     *        element should be before setting its tooltip's gravity to be away
     *        from that edge.
     * @param prefer (string, e.g. 'n', 'sw', 'w') - the direction to prefer
     *        if there are no viewable region edges effecting the tooltip's
     *        gravity. It will try to vary from this minimally, for example,
     *        if 'sw' is preferred and an element is near the right viewable 
     *        region edge, but not the top edge, it will set the gravity for
     *        that element's tooltip to be 'se', preserving the southern
     *        component.
     */
     $.fn.tipsy.autoBounds = function(margin, prefer) {
		return function() {
			var dir = {ns: prefer[0], ew: (prefer.length > 1 ? prefer[1] : false)},
			    boundTop = $(document).scrollTop() + margin,
			    boundLeft = $(document).scrollLeft() + margin,
			    $this = $(this);

			if ($this.offset().top < boundTop) dir.ns = 'n';
			if ($this.offset().left < boundLeft) dir.ew = 'w';
			if ($(window).width() + $(document).scrollLeft() - $this.offset().left < margin) dir.ew = 'e';
			if ($(window).height() + $(document).scrollTop() - $this.offset().top < margin) dir.ns = 's';

			return dir.ns + (dir.ew ? dir.ew : '');
		}
	};
    
})(jQuery);