if(typeof g_ugFunctions != "undefined")
	g_ugFunctions.registerTheme("tilesgrid");
else 
	jQuery(document).ready(function(){g_ugFunctions.registerTheme("tilesgrid")});


/**
 * Fixed tiles theme
 */
function UGTheme_tilesgrid(){

	var t = this;
	var g_gallery = new UniteGalleryMain(), g_objGallery, g_objects, g_objWrapper; 
	var g_objThumbsGrid = new UGThumbsGrid(), g_lightbox = new UGLightbox();
	var g_functions = new UGFunctions(), g_objTileDesign = new UGTileDesign();
	var g_objBullets, g_objNavWrapper, g_objButtonLeft, g_objButtonRight, g_objPreloader;
	

	var g_options = {
			theme_gallery_padding: 0,				//padding from sides of the gallery
			theme_navigation_type: "bullets",		//bullets, arrows
			theme_arrows_margin_top: 20,			//the space between arrows and grid
			theme_space_between_arrows: 5,			//horizontal space between arrows
			theme_bullets_margin_top: 40,			//the space 
			theme_navigation_align: "center",		//center, left, right - horizontal align of the navigation
			theme_navigation_offset_hor: 0,			//horizontal offset of the navigation, according the align
			theme_bullets_color: "gray",			//gray, blue, brown, green, red - color of the bullets
			theme_auto_open:null					//auto open lightbox at start
	};
	
	var g_defaults = {
			gallery_width: "100%",
			
			tile_width: 180,
			tile_height: 150,
			
			grid_num_rows: 3,
			grid_padding: 10,
			
			tile_enable_border: true,
			tile_enable_shadow: true,
			
			tile_border_radius: 2,
			
			grid_space_between_cols: 20,
			grid_space_between_rows: 20,
			
			bullets_space_between: 12,
			grid_vertical_scroll_ondrag: true
	};
	
	
	//temp variables
	var g_temp = {
			handle: null		//interval handle
	};
	
	
	/**
	 * Init the theme
	 */
	function initTheme(gallery, customOptions){
		
		g_gallery = gallery;
		
		//set default options
		g_options = jQuery.extend(g_options, g_defaults);
		
		//set custom options
		g_options = jQuery.extend(g_options, customOptions);
		
		modifyOptions();
		
		//set gallery options
		g_gallery.setOptions(g_options);
		
		g_gallery.setFreestyleMode();
		
		g_objects = gallery.getObjects();
		
		//get some objects for local use
		g_objGallery = jQuery(gallery);		
		g_objWrapper = g_objects.g_objWrapper;
		
		//init objects
		g_lightbox.init(gallery, g_options);
		
		g_objThumbsGrid.init(gallery, g_options, true);

		g_objTileDesign = g_objThumbsGrid.getObjTileDesign();
	}
	
	
	/**
	 * modify options
	 */
	function modifyOptions(){
		
		if(!g_options.grid_num_rows)
			g_options.grid_num_rows = 9999;
		
		g_options.bullets_addclass = "ug-bullets-"+g_options.theme_bullets_color;
		
	}
	
	
	/**
	 * get gallery width available for the grid
	 */
	function getGalleryWidth(){
		var galleryWidth = g_gallery.getSize().width;
		galleryWidth -= g_options.theme_gallery_padding * 2;
		
		return(galleryWidth);
	}
	
	
	/**
	 * set gallery html elements
	 */
	function setHtml(){
		
		//init bullets (only after panes size estimation)				
		if(g_options.theme_navigation_type == "bullets"){
			
			g_objBullets = new UGBullets();
			
			var galleryWidth = getGalleryWidth();
			
			var numPanes = g_objThumbsGrid.getNumPanesEstimationByWidth(galleryWidth);
			
			var objOptions = g_gallery.getOptions();
			g_objBullets.init(g_gallery, objOptions, numPanes);			
			
		}
		
		//add html elements
		g_objWrapper.addClass("ug-theme-tilesfixed");
		
		g_objThumbsGrid.setHtml();
		
		if(g_objBullets)
			g_objBullets.appendHTML(g_objWrapper);
		
		if(g_options.theme_navigation_type == "arrows"){
			var htmlAdd = "<div class='ug-tile-navigation-wrapper' style='position:absolute'>";
			htmlAdd += "<div class='ug-button-tile-navigation ug-button-tile-left'></div>";
			htmlAdd += "<div class='ug-button-tile-navigation ug-button-tile-right'></div>";
			htmlAdd += "</div>";
			g_objWrapper.append(htmlAdd);
			
			g_objNavWrapper = g_objWrapper.children(".ug-tile-navigation-wrapper");
			
			g_objButtonLeft = g_objNavWrapper.children(".ug-button-tile-left");
			g_objButtonRight = g_objNavWrapper.children(".ug-button-tile-right");
			
			g_objButtonLeft.css("margin-right",g_options.theme_space_between_arrows+"px");
		}
		
		g_lightbox.putHtml();
		
		//add preloader
		g_objWrapper.append("<div class='ug-tiles-preloader ug-preloader-trans'></div>");
		g_objPreloader = g_objWrapper.children(".ug-tiles-preloader");
		g_objPreloader.fadeTo(0,0);
		
	}
	
	
	/**
	 * get height estimation by width
	 */
	function getHeightEstimation(galleryWidth){
		
		//put the placeholder before run. check the width
		var gridHeight = g_objThumbsGrid.getHeightEstimationByWidth(galleryWidth);
		var numPanes = g_objThumbsGrid.getNumPanesEstimationByWidth(galleryWidth);
		
		//add navigation height
		if(numPanes > 1){
			if(g_options.theme_navigation_type == "arrows"){
				gridHeight += g_options.theme_arrows_margin_top;
				gridHeight += 30;	//arrows size
			}
			else{
				gridHeight += g_options.theme_bullets_margin_top;
				gridHeight += 15;	//bullets size
			}
				
		}
	
		return(gridHeight);
	}
	
	
	/**
	 * actually run the theme
	 */
	function actualRun(){
		
		//get gallery width, set estimation height and get width again.
		var galleryWidth = getGalleryWidth();
		var totalHeight = getHeightEstimation(galleryWidth);
		g_objWrapper.height(totalHeight);
		var galleryWidth = getGalleryWidth();

		initEvents();
		
		//place preloader
		g_functions.placeElement(g_objPreloader, "center", 50);
		
		g_objThumbsGrid.setWidth(galleryWidth);
		
		g_objThumbsGrid.run();
				
		g_lightbox.run();
		
		updateBullets();
		
		positionElements();
		
		
	}

	
	/**
	 * run the theme
	 */
	function runTheme(){
		
		setHtml();
		actualRun();
		
	}
	
	
	/**
	 * position elements
	 */
	function positionElements(){
		
		var objGallerySize = g_gallery.getSize();
		var g_objGridSize = g_objThumbsGrid.getSize();
		
		var gridElement = g_objThumbsGrid.getElement();
		g_functions.placeElement(gridElement, "center", 0);
		
		g_objGridSize = g_objThumbsGrid.getSize();
		
		var galleryHeight = g_objGridSize.height;
		
		var numPanes = g_objThumbsGrid.getNumPanes();

		if(numPanes > 1){
			//position bullets
			if(g_objBullets){
				
				g_objBullets.getElement().show();
				
				var bulletsElement = g_objBullets.getElement();
				
				var bulletsX = g_objGridSize.left + g_functions.getElementRelativePos(bulletsElement, g_options.theme_navigation_align, g_options.theme_navigation_offset_hor, gridElement);
				
				g_functions.placeElement(bulletsElement, bulletsX, galleryHeight + g_options.theme_bullets_margin_top);
				var sizeBullets = g_functions.getElementSize(bulletsElement);
				galleryHeight = sizeBullets.bottom;
			}
			
			//position buttons
			if(g_objNavWrapper){
				
				g_objNavWrapper.show();
				
				var navX = g_objGridSize.left + g_functions.getElementRelativePos(g_objNavWrapper, g_options.theme_navigation_align, g_options.theme_navigation_offset_hor, gridElement);
				
				g_functions.placeElement(g_objNavWrapper, navX, galleryHeight + g_options.theme_arrows_margin_top);
				
				var sizeNav = g_functions.getElementSize(g_objNavWrapper);
				
				galleryHeight = sizeNav.bottom;
			}
			
		}else{	//if only one pame, hide the navigation
			
			if(g_objNavWrapper)
				g_objNavWrapper.hide();
			
			if(g_objBullets)
				g_objBullets.getElement().hide();
		}
		
		g_objWrapper.height(galleryHeight);
	}
		
	
	/**
	 * on tile click - open lightbox
	 */
	function onTileClick(data, objTile){
		
		objTile = jQuery(objTile);		
		var index = objTile.index();
		
		g_lightbox.open(index);
	}

	
	/**
	 * update the bullets
	 */
	function updateBullets(){
		
		//update bullets
		if(!g_objBullets)
			return(false);
		
		numPanes = g_objThumbsGrid.getNumPanes();
		g_objBullets.updateNumBullets(numPanes);
		g_objBullets.setActive(0);
	}
	
	
	/**
	 * on gallery size change - resize the theme.
	 */
	function onSizeChange(){
		
		var galleryWidth = getGalleryWidth();
		
		g_objThumbsGrid.setWidth(galleryWidth);
		g_objThumbsGrid.run();
		
		updateBullets();
		
		positionElements();
	}


	/**
	 * on tile click - open lightbox
	 */
	function onTileClick(data, objTile){
		
		objTile = jQuery(objTile);		
		
		var objItem = g_objTileDesign.getItemByTile(objTile);
		var index = objItem.index;		
			
		g_lightbox.open(index);
	}
	
	/**
	 * before items request: hide items, show preloader
	 */
	function onBeforeReqestItems(){
		
		if(g_objNavWrapper)
			g_objNavWrapper.hide();
	
		if(g_objThumbsGrid)
			g_objThumbsGrid.getElement().hide();
		
		//show preloader:
		g_objPreloader.fadeTo(0,1);
	}
	
	
	/**
	 * open lightbox at start if needed
	 */
	function onLightboxInit(){

		if(g_options.theme_auto_open !== null){
			g_lightbox.open(g_options.theme_auto_open);
			g_options.theme_auto_open = null;
		}
		
	}
	
	
	/**
	 * init buttons functionality and events
	 */
	function initEvents(){
		
		g_objGallery.on(g_gallery.events.SIZE_CHANGE, onSizeChange);
		g_objGallery.on(g_gallery.events.GALLERY_BEFORE_REQUEST_ITEMS, onBeforeReqestItems);
		
		if(g_objBullets)
			g_objThumbsGrid.attachBullets(g_objBullets);		
		
		if(g_objNavWrapper){
			g_objThumbsGrid.attachNextPaneButton(g_objButtonRight);
			g_objThumbsGrid.attachPrevPaneButton(g_objButtonLeft);
		}
		
		jQuery(g_objTileDesign).on(g_objTileDesign.events.TILE_CLICK, onTileClick);
		
		jQuery(g_lightbox).on(g_lightbox.events.LIGHTBOX_INIT, onLightboxInit);
	}
	
	
	/**
	 * destroy the theme
	 */
	this.destroy = function(){
				
		g_objGallery.off(g_gallery.events.SIZE_CHANGE);
		g_objGallery.off(g_gallery.events.GALLERY_BEFORE_REQUEST_ITEMS);

		jQuery(g_objTileDesign).off(g_objTileDesign.events.TILE_CLICK);
		
		if(g_objBullets)
			jQuery(g_objBullets).off(g_objBullets.events.BULLET_CLICK);

		jQuery(g_lightbox).off(g_lightbox.events.LIGHTBOX_INIT);
		
		g_objThumbsGrid.destroy();
		g_lightbox.destroy();
		
	}

	
	/**
	 * run the theme setting
	 */
	this.run = function(){
		
		runTheme();
	}
	
	
	/**
	 * init 
	 */
	this.init = function(gallery, customOptions){
				
		initTheme(gallery, customOptions);
		
	}
	
	
}