/* ---------------------------------------------------------
   jlo Positioner
   Author: Tim Kinnane www.owlandfox.com
   Pattern by: Tim Kinnane www.owlandfox.com
   Version: 1.0 2 Nov 2010
   Description: Provide positioning controls for a chained element
--------------------------------------------------------- */
(function($){
	// Initialise - applied to the element that plugin is run on
	$.fn.jloPositioner = function(options) {
		var opts = $.extend(true, {}, $.fn.jloPositioner.defaults, options); // combine passed in args with defaults
		var count = $(this).length; // how many elements being used
		var collection = $(this); // store elements collection for getting index of current for suffix
		return this.each(function() { // apply to all jquery elements in selector and return self for chaining
			var o = $.extend({}, opts, $(this).data()); // Extend passed options with any preexisting data
			var myself = $(this); // for easy access to self
			o.before.call(this); // do anything needed prior to init
			myself.children().remove();
			myself.empty(); // clear anything in the element first, just in case
			myself.addClass(o.className).css(o.css); // add class and css from options 
			var idsuffix = (count > 1) ? "-"+collection.index(this) : ""; // use numbered suffix for id'ing multiple elements
			if(myself.attr('id') == "") myself.attr("id", o.id+idsuffix); // if no id set, use id from defaults
			myself.data(o); // store all current options in element data
			if (o.addLabel) myself.prepend($('<label>'+o.title+'</label>')); // add a label to element if required
			/* CUSTOM FUNCTIONALITY HERE ---------------------------------------------------------------> */
			
			// create position controls
			var tmpbutton = $('<button type="button" />').css(o.buttonCSS);
			var up = tmpbutton.clone();
			var down = tmpbutton.clone();
			var left = tmpbutton.clone();
			var right = tmpbutton.clone();
			up.addClass("p-up").button().children().addClass("ui-icon ui-icon-triangle-1-n");
			down.addClass("p-down").button().children().addClass("ui-icon ui-icon-triangle-1-s");
			left.addClass("p-left").button().children().addClass("ui-icon ui-icon-triangle-1-w");
			right.addClass("p-right").button().children().addClass("ui-icon ui-icon-triangle-1-e");
			myself.append(up);
			myself.append(down);
			myself.append(left);
			myself.append(right);
			
			var movePos = function(dir, inc) {
				var increment = (inc > 0) ? inc : myself.data('increments');
				switch(dir) {
					case "up" 	: var animobj = { top: '-='+increment }; break;
					case "down" : var animobj = { top: '+='+increment }; break;
					case "left" : var animobj = { left: '-='+increment }; break;
					case "right" : var animobj = { left: '+='+increment }; break;
				}
				var chain = myself.data('chainTo');
				chain.each(function() {
					//console.log('moving '+$(this).attr('id')+' '+dir); // debug
					$(this).animate(animobj, { queue:false, duration:"fast" });
				});
				o.updated.call(this);
			}
			
			up.click(function() { movePos('up')});
			down.click(function() { movePos('down')});
			left.click(function() { movePos('left')});
			right.click(function() { movePos('right')});
			
			/* END CUSTOM FUNCTIONALITY <---------------------------------------------------------------- */
			myself.bind('click', function() { myself.data('clicked').call(this) }); // call custom function for after its clicked
			if(o.chainClick){myself.bind('click',function(e,bc){bc?bc.push(this):bc=[this];$(myself.data('chainTo')).each(function(){if($(bc).index(this)<0)$(this).triggerHandler('click',[bc])})})}; // my super function to tie click events together
			if (o.focus) myself.focus(); // focus on self
			o.after.call(this);
		});
	}
	// Set some defaults
	$.fn.jloPositioner.defaults = {
		/* CUSTOM PROPERTIES AND METHODS */
		
		increments: 5,
		buttonCSS: { width: 22, height: 22, padding: 2 },
		
		/* PATTERN DEFAULTS... */
		id: 'position-control',
		className: 'position-control',
		title: 'Position',

		addLabel: true,
		css: {}, // default style object
		chainTo: [], // array of elements that this plugin is attached to - allows chaining events from one to the next
		chainClick: false, // will fire click event on chained elements when it is clicked
		before: function() {}, // function to call before initialising elements
		after: function() {}, // function to call when initialised
		clicked: function() {}, // function to call after click event processed
		updated: function() {}, // function to call when something is updated
		error: function() {}, // function to call when an error occurs
		removed: function() {}, // function to call if plugin element removed
		debug: false, // do or don't do debuging type stuff
		focus: false, // grab focus on self after init
		additional: function() {} // rename to whatever custom additional function you need
	}
})(jQuery); // ALL DONE