WordPress/wp-admin/js/postbox.dev.js

var postboxes;

(function($) {
	postboxes = {
		add_postbox_toggles : function(page, args) {
			this.init(page, args);

			$('.postbox h3, .postbox .handlediv').click( function() {
				var p = $(this).parent('.postbox'), id = p.attr('id');

				if ( 'dashboard_browser_nag' == id )
					return;

				p.toggleClass('closed');
				postboxes.save_state(page);

				if ( id ) {
					if ( !p.hasClass('closed') && $.isFunction(postboxes.pbshow) )
						postboxes.pbshow(id);
					else if ( p.hasClass('closed') && $.isFunction(postboxes.pbhide) )
						postboxes.pbhide(id);
				}
			});

			$('.postbox h3 a').click( function(e) {
				e.stopPropagation();
			});

			$('.postbox a.dismiss').click( function(e) {
				var hide_id = $(this).parents('.postbox').attr('id') + '-hide';
				$( '#' + hide_id ).prop('checked', false).triggerHandler('click');
				return false;
			});

			$('.hide-postbox-tog').click( function() {
				var box = $(this).val();

				if ( $(this).prop('checked') ) {
					$('#' + box).show();
					if ( $.isFunction( postboxes.pbshow ) )
						postboxes.pbshow( box );
				} else {
					$('#' + box).hide();
					if ( $.isFunction( postboxes.pbhide ) )
						postboxes.pbhide( box );
				}
				postboxes.save_state(page);
			});

			$('.columns-prefs input[type="radio"]').click(function(){
				var num = $(this).val(), i, el, done, ps = $('#poststuff');

				num = parseInt(num, 10);

				if ( ps.length ) { // edit pages

					if ( num == 2 ) {
						$('.wrap').removeClass('columns-1').addClass('columns-2');
						ps.addClass('has-right-sidebar');

						if ( !$('#side-info-column #side-sortables').length )
							$('#side-info-column').append( $('#side-sortables') );

					} else if ( num == 1 ) {
						$('.wrap').removeClass('columns-2').addClass('columns-1');
						ps.removeClass('has-right-sidebar');

						if ( !$('#post-body-content #side-sortables').length )
							$('#normal-sortables').before( $('#side-sortables') );
					}

				} else { // dashboard
					for ( i = 4; ( i > num && i > 1 ); i-- ) {
						el = $('#' + postboxes._colname(i) + '-sortables');
						$('#' + postboxes._colname(i-1) + '-sortables').append(el.children('.postbox'));
						el.parent().hide();
					}

					for ( i = num; i > 0; i-- ) {
						el = $('#' + postboxes._colname(i) + '-sortables');
						done = false;

						if ( el.parent().is(':hidden') ) {
							switch ( i ) {
								case 4:
									if ( $('#column3-sortables .postbox').length > 1 ) {
										el.append( $('#column3-sortables .postbox').last() );
										done = true;
									}
								case 3:
									if ( !done && $('#side-sortables .postbox').length > 1 ) {
										el.append( $('#side-sortables .postbox').last() );
										done = true;
									}
								case 2:
									if ( !done && $('#normal-sortables .postbox').length > 1 ) {
										el.append( $('#normal-sortables .postbox').last() );
										done = true;
									}
								default:
									if ( !done )
										el.addClass('empty-container')
							}

							el.parent().show();
						}
					}

					$('.postbox-container:visible').css('width', 100/num + '%');
				}
				postboxes.save_order(page);
			});
		},

		init : function(page, args) {
			$.extend( this, args || {} );
			$('#wpbody-content').css('overflow','hidden');
			$('.meta-box-sortables').sortable({
				placeholder: 'sortable-placeholder',
				connectWith: '.meta-box-sortables',
				items: '.postbox',
				handle: '.hndle',
				cursor: 'move',
				distance: 2,
				tolerance: 'pointer',
				forcePlaceholderSize: true,
				helper: 'clone',
				opacity: 0.65,
				stop: function(e,ui) {
					if ( $(this).find('#dashboard_browser_nag').is(':visible') && 'dashboard_browser_nag' != this.firstChild.id ) {
						$(this).sortable('cancel');
						return;
					}

					postboxes.save_order(page);
					ui.item.parent().removeClass('temp-border');
				},
				receive: function(e,ui) {
					if ( 'dashboard_browser_nag' == ui.item[0].id )
						$(ui.sender).sortable('cancel');

					$.each($('.postbox-container:visible'), function(n, el){
						var first = $('.meta-box-sortables:first', el);

						if ( !first.children('.postbox:visible').length )
							first.addClass('empty-container');
						else
							first.removeClass('empty-container');
					});
				}
			});
		},

		save_state : function(page) {
			var closed = $('.postbox').filter('.closed').map(function() { return this.id; }).get().join(','),
				hidden = $('.postbox').filter(':hidden').map(function() { return this.id; }).get().join(',');

			$.post(ajaxurl, {
				action: 'closed-postboxes',
				closed: closed,
				hidden: hidden,
				closedpostboxesnonce: jQuery('#closedpostboxesnonce').val(),
				page: page
			});
		},

		save_order : function(page) {
			var postVars, page_columns = $('.columns-prefs input:checked').val() || 0;

			postVars = {
				action: 'meta-box-order',
				_ajax_nonce: $('#meta-box-order-nonce').val(),
				page_columns: page_columns,
				page: page
			}
			$('.meta-box-sortables').each( function() {
				postVars["order[" + this.id.split('-')[0] + "]"] = $(this).sortable( 'toArray' ).join(',');
			} );
			$.post( ajaxurl, postVars );
		},

		_colname : function(n) {
			switch (n) {
				case 1:
					return 'normal';
					break
				case 2:
					return 'side';
					break
				case 3:
					return 'column3';
					break
				case 4:
					return 'column4';
					break
				default:
					return '';
			}
		},

		/* Callbacks */
		pbshow : false,

		pbhide : false
	};

}(jQuery));