WordPress/wp-admin/js/widgets.js

/*global ajaxurl, isRtl */
var wpWidgets;
(function($) {

wpWidgets = {

	init : function() {
		var rem, the_id,
			self = this,
			chooser = $('#widgets-chooser'),
			selectSidebar = chooser.find('.widgets-chooser-sidebars'),
			sidebars = $('div.widgets-sortables'),
			isRTL = !! ( 'undefined' !== typeof isRtl && isRtl ),
			margin = ( isRTL ? 'marginRight' : 'marginLeft' );

		$('#widgets-right').children('.widgets-holder-wrap').children('.sidebar-name').click( function() {
			var $this = $(this), parent = $this.parent();
			if ( parent.hasClass('closed') ) {
				parent.removeClass('closed');
				$this.siblings('.widgets-sortables').sortable('refresh');
			} else {
				parent.addClass('closed');
			}
		});

		$('#widgets-left').children('.widgets-holder-wrap').children('.sidebar-name').click(function() {
			$(this).parent().toggleClass('closed');
		});

		sidebars.each(function(){
			if ( $(this).parent().hasClass('inactive') )
				return true;

			var h = 50, H = $(this).children('.widget').length;
			h = h + parseInt(H * 48, 10);
			$(this).css( 'minHeight', h + 'px' );
		});

		$(document.body).bind('click.widgets-toggle', function(e){
			var target = $(e.target), css = {}, widget, inside, w;

			if ( target.parents('.widget-top').length && ! target.parents('#available-widgets').length ) {
				widget = target.closest('div.widget');
				inside = widget.children('.widget-inside');
				w = parseInt( widget.find('input.widget-width').val(), 10 );

				if ( inside.is(':hidden') ) {
					if ( w > 250 && inside.closest('div.widgets-sortables').length ) {
						css.width = w + 30 + 'px';
						if ( inside.closest('div.widget-liquid-right').length )
							css[margin] = 235 - w + 'px';
						widget.css(css);
					}
					wpWidgets.fixLabels(widget);
					inside.slideDown('fast');
				} else {
					inside.slideUp('fast', function() {
						widget.css({'width':'', margin:''});
					});
				}
				e.preventDefault();
			} else if ( target.hasClass('widget-control-save') ) {
				wpWidgets.save( target.closest('div.widget'), 0, 1, 0 );
				e.preventDefault();
			} else if ( target.hasClass('widget-control-remove') ) {
				wpWidgets.save( target.closest('div.widget'), 1, 1, 0 );
				e.preventDefault();
			} else if ( target.hasClass('widget-control-close') ) {
				wpWidgets.close( target.closest('div.widget') );
				e.preventDefault();
			}
		});

		sidebars.children('.widget').each(function() {
			wpWidgets.appendTitle(this);
			if ( $('p.widget-error', this).length )
				$('a.widget-action', this).click();
		});

		$('#widget-list').children('.widget').draggable({
			connectToSortable: 'div.widgets-sortables',
			handle: '> .widget-top > .widget-title',
			distance: 2,
			helper: 'clone',
			zIndex: 100,
			containment: 'document',
			start: function(e,ui) {
				ui.helper.find('div.widget-description').hide();
				the_id = this.id;
			},
			stop: function() {
				if ( rem )
					$(rem).hide();

				rem = '';
			}
		});

		sidebars.sortable({
			placeholder: 'widget-placeholder',
			items: '> .widget',
			handle: '> .widget-top > .widget-title',
			cursor: 'move',
			distance: 2,
			containment: 'document',
			start: function(e,ui) {
				ui.item.children('.widget-inside').hide();
				ui.item.css({margin:'', 'width':''});
			},
			stop: function(e,ui) {
				if ( ui.item.hasClass('ui-draggable') && ui.item.data('draggable') )
					ui.item.draggable('destroy');

				if ( ui.item.hasClass('deleting') ) {
					wpWidgets.save( ui.item, 1, 0, 1 ); // delete widget
					ui.item.remove();
					return;
				}

				var add = ui.item.find('input.add_new').val(),
					n = ui.item.find('input.multi_number').val(),
					id = the_id,
					sb = $(this).attr('id');

				ui.item.css({margin:'', 'width':''});
				the_id = '';

				if ( add ) {
					if ( 'multi' === add ) {
						ui.item.html( ui.item.html().replace(/<[^<>]+>/g, function(m){ return m.replace(/__i__|%i%/g, n); }) );
						ui.item.attr( 'id', id.replace('__i__', n) );
						n++;
						$('div#' + id).find('input.multi_number').val(n);
					} else if ( 'single' === add ) {
						ui.item.attr( 'id', 'new-' + id );
						rem = 'div#' + id;
					}
					wpWidgets.save( ui.item, 0, 0, 1 );
					ui.item.find('input.add_new').val('');
					ui.item.find('a.widget-action').click();
					return;
				}
				wpWidgets.saveOrder(sb);
			},
			receive: function(e, ui) {
				var sender = $(ui.sender);

				if ( !$(this).is(':visible') || this.id.indexOf('orphaned_widgets') > -1 )
					sender.sortable('cancel');

				if ( sender.attr('id').indexOf('orphaned_widgets') > -1 && !sender.children('.widget').length ) {
					sender.parents('.orphan-sidebar').slideUp(400, function(){ $(this).remove(); });
				}
			}
		}).sortable('option', 'connectWith', 'div.widgets-sortables');

		$('#available-widgets').droppable({
			tolerance: 'pointer',
			accept: function(o){
				return $(o).parent().attr('id') !== 'widget-list';
			},
			drop: function(e,ui) {
				ui.draggable.addClass('deleting');
				$('#removing-widget').hide().children('span').html('');
			},
			over: function(e,ui) {
				ui.draggable.addClass('deleting');
				$('div.widget-placeholder').hide();

				if ( ui.draggable.hasClass('ui-sortable-helper') )
					$('#removing-widget').show().children('span')
					.html( ui.draggable.find('div.widget-title').children('h4').html() );
			},
			out: function(e,ui) {
				ui.draggable.removeClass('deleting');
				$('div.widget-placeholder').show();
				$('#removing-widget').hide().children('span').html('');
			}
		});

		// Area Chooser
		$( '#widgets-right .widgets-holder-wrap' ).each( function( index, element ) {
			var $element = $( element ),
				name = $element.find( '.sidebar-name h3' ).text(),
				id = $element.find( '.widgets-sortables' ).attr( 'id' ),
				li = $('<li tabindex="0">').text( $.trim( name ) );

			if ( index === 0 ) {
				li.addClass( 'widgets-chooser-selected' );
			}

			selectSidebar.append( li );
			li.data( 'sidebarId', id );
		});

		$( '#available-widgets .widget .widget-title' ).on( 'click.widgets-chooser', function() {
			var widget = $(this).closest( '.widget' );

			if ( widget.hasClass( 'widget-in-question' ) || ( $( '#widgets-left' ).hasClass( 'chooser' ) ) ) {
				self.closeChooser();
			} else {
				// Open the chooser
				self.clearWidgetSelection();
				$( '#widgets-left' ).addClass( 'chooser' );
				widget.addClass( 'widget-in-question' );

				widget.after( chooser );
				chooser.slideDown( 200, function() {
					selectSidebar.find('.widgets-chooser-selected').focus();
				});
			}
		});

		// Add event handlers
		chooser.on( 'click.widgets-chooser', function( event ) {
			var $target = $( event.target );

			if ( $target.hasClass('button-primary') ) {
				self.addWidget( chooser );
				self.closeChooser();
			} else if ( $target.hasClass('button-secondary') ) {
				self.closeChooser();
			} else if ( $target.is('.widgets-chooser-sidebars li') ) {
				chooser.find('.widgets-chooser-selected').removeClass( 'widgets-chooser-selected' );
				$target.addClass( 'widgets-chooser-selected' );
			}
		});
	},

	saveOrder : function(sb) {
		if ( sb )
			$('#' + sb).closest('div.widgets-holder-wrap').find('.spinner').css('display', 'inline-block');

		var a = {
			action: 'widgets-order',
			savewidgets: $('#_wpnonce_widgets').val(),
			sidebars: []
		};

		$('div.widgets-sortables').each( function() {
			if ( $(this).sortable )
				a['sidebars[' + $(this).attr('id') + ']'] = $(this).sortable('toArray').join(',');
		});

		$.post( ajaxurl, a, function() {
			$('.spinner').hide();
		});

		this.resize();
	},

	save : function(widget, del, animate, order) {
		var sb = widget.closest('div.widgets-sortables').attr('id'), data = widget.find('form').serialize(), a;
		widget = $(widget);
		$('.spinner', widget).show();

		a = {
			action: 'save-widget',
			savewidgets: $('#_wpnonce_widgets').val(),
			sidebar: sb
		};

		if ( del )
			a.delete_widget = 1;

		data += '&' + $.param(a);

		$.post( ajaxurl, data, function(r){
			var id;

			if ( del ) {
				if ( !$('input.widget_number', widget).val() ) {
					id = $('input.widget-id', widget).val();
					$('#available-widgets').find('input.widget-id').each(function(){
						if ( $(this).val() === id )
							$(this).closest('div.widget').show();
					});
				}

				if ( animate ) {
					order = 0;
					widget.slideUp('fast', function(){
						$(this).remove();
						wpWidgets.saveOrder();
					});
				} else {
					widget.remove();
					wpWidgets.resize();
				}
			} else {
				$('.spinner').hide();
				if ( r && r.length > 2 ) {
					$('div.widget-content', widget).html(r);
					wpWidgets.appendTitle(widget);
					wpWidgets.fixLabels(widget);
				}
			}
			if ( order )
				wpWidgets.saveOrder();
		});
	},

	appendTitle : function(widget) {
		var title = $('input[id*="-title"]', widget).val() || '';

		if ( title )
			title = ': ' + title.replace(/<[^<>]+>/g, '').replace(/</g, '&lt;').replace(/>/g, '&gt;');

		$(widget).children('.widget-top').children('.widget-title').children()
				.children('.in-widget-title').html(title);

	},

	resize : function() {
		$('div.widgets-sortables').each(function(){
			if ( $(this).parent().hasClass('inactive') )
				return true;

			var h = 50, H = $(this).children('.widget').length;
			h = h + parseInt(H * 48, 10);
			$(this).css( 'minHeight', h + 'px' );
		});
	},

	fixLabels : function(widget) {
		widget.children('.widget-inside').find('label').each(function(){
			var f = $(this).attr('for');
			if ( f && f === $('input', this).attr('id') )
				$(this).removeAttr('for');
		});
	},

	close : function(widget) {
		widget.children('.widget-inside').slideUp('fast', function(){
			widget.css({'width':'', margin:''});
		});
	},

	addWidget: function( chooser ) {
		var widget = $('#available-widgets').find('.widget-in-question').clone(),
			widgetId = widget.attr('id'),
			add = widget.find( 'input.add_new' ).val(),
			n = widget.find( 'input.multi_number' ).val(),
			sidebarId = chooser.find( '.widgets-chooser-selected' ).data('sidebarId'),
			sidebar = $( '#' + sidebarId );

		if ( 'multi' === add ) {
			widget.html(
				widget.html().replace( /<[^<>]+>/g, function(m) {
					return m.replace( /__i__|%i%/g, n );
				})
			);

			widget.attr( 'id', widgetId.replace( '__i__', n ) );
			n++;
			$( '#' + widgetId ).find('input.multi_number').val(n);
		} else if ( 'single' === add ) {
			widget.attr( 'id', 'new-' + widgetId );
			$( '#' + widgetId ).hide();
		}

		// Open the widgets container
		sidebar.closest( '.widgets-holder-wrap' ).removeClass('closed');
		sidebar.sortable('refresh');

		// Change for MP6
		// widget.prependTo( sidebar );
		sidebar.find( '.sidebar-description' ).after( widget );

		wpWidgets.save( widget, 0, 0, 1 );
		// No longer "new" widget
		widget.find( 'input.add_new' ).val('');

		$( 'html, body' ).animate({
			scrollTop: sidebar.offset().top - 130
		}, 200 );

		window.setTimeout( function() {
			// Cannot use a callback in the animation above as it fires twice,
			// have to queue this "by hand".
			widget.find( '.widget-title' ).trigger('click');
		}, 250 );
	},

	closeChooser: function() {
		var self = this;

		$( '#widgets-chooser' ).slideUp( 200, function() {
			$('#wpbody-content').append( this );
			self.clearWidgetSelection();
		});
	},

	clearWidgetSelection: function() {
		$( '#widgets-left' ).removeClass( 'chooser' );
		$( '#available-widgets' ).find( '.widget-in-question' ).removeClass( 'widget-in-question' );
	}
};

$(document).ready( function(){ wpWidgets.init(); } );

})(jQuery);