/*
* jQuery Mobile Framework : "listview" plugin
* Copyright (c) jQuery Project
* Dual licensed under the MIT or GPL Version 2 licenses.
* http://jquery.org/license
*/
(function($, undefined ) {

$.widget( "mobile.listview", $.mobile.widget, {
	options: {
		theme: "c",
		countTheme: "c",
		headerTheme: "b",
		dividerTheme: "b",
		splitIcon: "arrow-r",
		splitTheme: "b",
		inset: false
	},
	
	_create: function() {
		var $list = this.element,
			o = this.options;

		// create listview markup 
		$list
			.addClass( "ui-listview" )
			.attr( "role", "listbox" )
		
		if ( o.inset ) {
			$list.addClass( "ui-listview-inset ui-corner-all ui-shadow" );
		}	

		$list.delegate( ".ui-li", "focusin", function() {
			$( this ).attr( "tabindex", "0" );
		});

		this._itemApply( $list, $list );
		
		this.refresh( true );
	
		//keyboard events for menu items
		$list.keydown(function( e ) {
			var target = $( e.target ),
				li = target.closest( "li" );

			// switch logic based on which key was pressed
			switch ( e.keyCode ) {
				// up or left arrow keys
				case 38:
					var prev = li.prev();

					// if there's a previous option, focus it
					if ( prev.length ) {
						target
							.blur()
							.attr( "tabindex", "-1" );

						prev.find( "a" ).first().focus();
					}	

					return false;
				break;

				// down or right arrow keys
				case 40:
					var next = li.next();
				
					// if there's a next option, focus it
					if ( next.length ) {
						target
							.blur()
							.attr( "tabindex", "-1" );
						
						next.find( "a" ).first().focus();
					}	

					return false;
				break;

				case 39:
					var a = li.find( "a.ui-li-link-alt" );

					if ( a.length ) {
						target.blur();
						a.first().focus();
					}

					return false;
				break;

				case 37:
					var a = li.find( "a.ui-link-inherit" );

					if ( a.length ) {
						target.blur();
						a.first().focus();
					}

					return false;
				break;

				// if enter or space is pressed, trigger click
				case 13:
				case 32:
					 target.trigger( "vclick" );

					 return false;
				break;	
			}
		});	
		
	},

	_itemApply: function( $list, item ) {
		// TODO class has to be defined in markup
		item.find( ".ui-li-count" )
			.addClass( "ui-btn-up-" + ($list.jqmData( "counttheme" ) || this.options.countTheme) + " ui-btn-corner-all" );

		item.find( "h1, h2, h3, h4, h5, h6" ).addClass( "ui-li-heading" );

		item.find( "p, dl" ).addClass( "ui-li-desc" );

		$list.find( "li" ).find( ">img:eq(0), >a:first>img:eq(0)" ).addClass( "ui-li-thumb" ).each(function() {
			$( this ).closest( "li" )
				.addClass( $(this).is( ".ui-li-icon" ) ? "ui-li-has-icon" : "ui-li-has-thumb" );
		});

		var aside = item.find( ".ui-li-aside" );

		if ( aside.length ) {
            aside.each(function(i, el) {
			    $(el).prependTo( $(el).parent() ); //shift aside to front for css float
            });
		}

		if ( $.support.cssPseudoElement || !$.nodeName( item[0], "ol" ) ) {
			return;
		}
	},
	
	_removeCorners: function(li){
		li
			.add( li.find(".ui-btn-inner, .ui-li-link-alt, .ui-li-thumb") )
			.removeClass( "ui-corner-top ui-corner-bottom ui-corner-br ui-corner-bl ui-corner-tr ui-corner-tl" );
	},
	
	refresh: function( create ) {
		this._createSubPages();
		
		var o = this.options,
			$list = this.element,
			self = this,
			dividertheme = $list.jqmData( "dividertheme" ) || o.dividerTheme,
			li = $list.children( "li" ),
			counter = $.support.cssPseudoElement || !$.nodeName( $list[0], "ol" ) ? 0 : 1;

		if ( counter ) {
			$list.find( ".ui-li-dec" ).remove();
		}

		li.attr({ "role": "option", "tabindex": "-1" });

		li.first().attr( "tabindex", "0" );
		

		li.each(function( pos ) {
			var item = $( this ),
				itemClass = "ui-li";

			// If we're creating the element, we update it regardless
			if ( !create && item.hasClass( "ui-li" ) ) {
				return;
			}

			var itemTheme = item.jqmData("theme") || o.theme;

			var a = item.find( "a" );
				
			if ( a.length ) {	
				var icon = item.jqmData("icon");
				
				item
					.buttonMarkup({
						wrapperEls: "div",
						shadow: false,
						corners: false,
						iconpos: "right",
						icon: a.length > 1 || icon === false ? false : icon || "arrow-r",
						theme: itemTheme
					});

				a.first().addClass( "ui-link-inherit" );

				if ( a.length > 1 ) {
					itemClass += " ui-li-has-alt";

					var last = a.last(),
						splittheme = $list.jqmData( "splittheme" ) || last.jqmData( "theme" ) || o.splitTheme;
					
					last
						.appendTo(item)
						.attr( "title", last.text() )
						.addClass( "ui-li-link-alt" )
						.empty()
						.buttonMarkup({
							shadow: false,
							corners: false,
							theme: itemTheme,
							icon: false,
							iconpos: false
						})
						.find( ".ui-btn-inner" )
							.append( $( "<span>" ).buttonMarkup({
								shadow: true,
								corners: true,
								theme: splittheme,
								iconpos: "notext",
								icon: $list.jqmData( "spliticon" ) || last.jqmData( "icon" ) ||  o.splitIcon
							} ) );
				}

			} else if ( item.jqmData( "role" ) === "list-divider" ) {
				itemClass += " ui-li-divider ui-btn ui-bar-" + dividertheme;
				item.attr( "role", "heading" );

				//reset counter when a divider heading is encountered
				if ( counter ) {
					counter = 1;
				}

			} else {
				itemClass += " ui-li-static ui-btn-up-" + itemTheme;
			}
			
			
			if( o.inset ){	
				if ( pos === 0 ) {
						itemClass += " ui-corner-top";
	
						item
							.add( item.find( ".ui-btn-inner" ) )
							.find( ".ui-li-link-alt" )
								.addClass( "ui-corner-tr" )
							.end()
							.find( ".ui-li-thumb" )
								.addClass( "ui-corner-tl" );
						if(item.next().next().length){
							self._removeCorners( item.next() );		
						}
	
				}
				if ( pos === li.length - 1 ) {
						itemClass += " ui-corner-bottom";
	
						item
							.add( item.find( ".ui-btn-inner" ) )
							.find( ".ui-li-link-alt" )
								.addClass( "ui-corner-br" )
							.end()
							.find( ".ui-li-thumb" )
								.addClass( "ui-corner-bl" );
						
						if(item.prev().prev().length){
							self._removeCorners( item.prev() );		
						}	
				}
			}


			if ( counter && itemClass.indexOf( "ui-li-divider" ) < 0 ) {
				item
					.find( ".ui-link-inherit" ).first()
					.addClass( "ui-li-jsnumbering" )
					.prepend( "<span class='ui-li-dec'>" + (counter++) + ". </span>" );
			}

			item.add( item.find( ".ui-btn-inner" ) ).addClass( itemClass );

			if ( !create ) {
				self._itemApply( $list, item );
			}
		});
	},
	
	//create a string for ID/subpage url creation
	_idStringEscape: function( str ){
		return str.replace(/[^a-zA-Z0-9]/g, '-');
	},
	
	_createSubPages: function() {
		var parentList = this.element,
			parentPage = parentList.closest( ".ui-page" ),
			parentId = parentPage.jqmData( "url" ),
			o = this.options,
			self = this,
			persistentFooterID = parentPage.find( ":jqmData(role='footer')" ).jqmData( "id" );

		$( parentList.find( "li>ul, li>ol" ).toArray().reverse() ).each(function( i ) {
			var list = $( this ),
				parent = list.parent(),
				nodeEls = $( list.prevAll().toArray().reverse() ),
				nodeEls = nodeEls.length ? nodeEls : $( "<span>" + $.trim(parent.contents()[ 0 ].nodeValue) + "</span>" ),
				title = nodeEls.first().text(),//url limits to first 30 chars of text
				id = parentId + "&" + $.mobile.subPageUrlKey + "=" + self._idStringEscape(title + " " + i),
				theme = list.jqmData( "theme" ) || o.theme,
				countTheme = list.jqmData( "counttheme" ) || parentList.jqmData( "counttheme" ) || o.countTheme,
				newPage = list.wrap( "<div data-" + $.mobile.ns + "role='page'><div data-" + $.mobile.ns + "role='content'></div></div>" )
							.parent()
								.before( "<div data-" + $.mobile.ns + "role='header' data-" + $.mobile.ns + "theme='" + o.headerTheme + "'><div class='ui-title'>" + title + "</div></div>" )
								.after( persistentFooterID ? $( "<div data-" + $.mobile.ns + "role='footer'  data-" + $.mobile.ns + "id='"+ persistentFooterID +"'>") : "" )
								.parent()
									.attr( "data-" + $.mobile.ns + "url", id )
									.attr( "data-" + $.mobile.ns + "theme", theme )
									.attr( "data-" + $.mobile.ns + "count-theme", countTheme )
									.appendTo( $.mobile.pageContainer );

				newPage.page();		
			var anchor = parent.find('a:first');
			if (!anchor.length) {
				anchor = $("<a></a>").html( nodeEls || title ).prependTo(parent.empty());
			}
			anchor.attr('href','#' + id);
		}).listview();
	}
});

})( jQuery );