✏ EDIT: gallery.js

/**
 * @output wp-admin/js/gallery.js
 */

/* global unescape, getUserSetting, setUserSetting, wpgallery, tinymce */

jQuery( function($) {
	var gallerySortable, gallerySortableInit, sortIt, clearAll, w, desc = false;

gallerySortableInit = function() {
		gallerySortable = $('#media-items').sortable( {
			items: 'div.media-item',
			placeholder: 'sorthelper',
			axis: 'y',
			distance: 2,
			handle: 'div.filename',
			stop: function() {
				// When an update has occurred, adjust the order for each item.
				var all = $('#media-items').sortable('toArray'), len = all.length;
				$.each(all, function(i, id) {
					var order = desc ? (len - i) : (1 + i);
					$('#' + id + ' .menu_order input').val(order);
				});
			}
		} );
	};

sortIt = function() {
		var all = $('.menu_order_input'), len = all.length;
		all.each(function(i){
			var order = desc ? (len - i) : (1 + i);
			$(this).val(order);
		});
	};

clearAll = function(c) {
		c = c || 0;
		$('.menu_order_input').each( function() {
			if ( this.value === '0' || c ) {
				this.value = '';
			}
		});
	};

$('#asc').on( 'click', function( e ) {
		e.preventDefault();
		desc = false;
		sortIt();
	});
	$('#desc').on( 'click', function( e ) {
		e.preventDefault();
		desc = true;
		sortIt();
	});
	$('#clear').on( 'click', function( e ) {
		e.preventDefault();
		clearAll(1);
	});
	$('#showall').on( 'click', function( e ) {
		e.preventDefault();
		$('#sort-buttons span a').toggle();
		$('a.describe-toggle-on').hide();
		$('a.describe-toggle-off, table.slidetoggle').show();
		$('img.pinkynail').toggle(false);
	});
	$('#hideall').on( 'click', function( e ) {
		e.preventDefault();
		$('#sort-buttons span a').toggle();
		$('a.describe-toggle-on').show();
		$('a.describe-toggle-off, table.slidetoggle').hide();
		$('img.pinkynail').toggle(true);
	});

// Initialize sortable.
	gallerySortableInit();
	clearAll();

if ( $('#media-items>*').length > 1 ) {
		w = wpgallery.getWin();

$('#save-all, #gallery-settings').show();
		if ( typeof w.tinyMCE !== 'undefined' && w.tinyMCE.activeEditor && ! w.tinyMCE.activeEditor.isHidden() ) {
			wpgallery.mcemode = true;
			wpgallery.init();
		} else {
			$('#insert-gallery').show();
		}
	}
});

/* gallery settings */
window.tinymce = null;

window.wpgallery = {
	mcemode : false,
	editor : {},
	dom : {},
	is_update : false,
	el : {},

I : function(e) {
		return document.getElementById(e);
	},

init: function() {
		var t = this, li, q, i, it, w = t.getWin();

if ( ! t.mcemode ) {
			return;
		}

li = ('' + document.location.search).replace(/^\?/, '').split('&');
		q = {};
		for (i=0; i<li.length; i++) {
			it = li[i].split('=');
			q[unescape(it[0])] = unescape(it[1]);
		}

if ( q.mce_rdomain ) {
			document.domain = q.mce_rdomain;
		}

// Find window & API.
		window.tinymce = w.tinymce;
		window.tinyMCE = w.tinyMCE;
		t.editor = tinymce.EditorManager.activeEditor;

t.setup();
	},

getWin : function() {
		return window.dialogArguments || opener || parent || top;
	},

setup : function() {
		var t = this, a, ed = t.editor, g, columns, link, order, orderby;
		if ( ! t.mcemode ) {
			return;
		}

t.el = ed.selection.getNode();

if ( t.el.nodeName !== 'IMG' || ! ed.dom.hasClass(t.el, 'wpGallery') ) {
			if ( ( g = ed.dom.select('img.wpGallery') ) && g[0] ) {
				t.el = g[0];
			} else {
				if ( getUserSetting('galfile') === '1' ) {
					t.I('linkto-file').checked = 'checked';
				}
				if ( getUserSetting('galdesc') === '1' ) {
					t.I('order-desc').checked = 'checked';
				}
				if ( getUserSetting('galcols') ) {
					t.I('columns').value = getUserSetting('galcols');
				}
				if ( getUserSetting('galord') ) {
					t.I('orderby').value = getUserSetting('galord');
				}
				jQuery('#insert-gallery').show();
				return;
			}
		}

a = ed.dom.getAttrib(t.el, 'title');
		a = ed.dom.decode(a);

if ( a ) {
			jQuery('#update-gallery').show();
			t.is_update = true;

columns = a.match(/columns=['"]([0-9]+)['"]/);
			link = a.match(/link=['"]([^'"]+)['"]/i);
			order = a.match(/order=['"]([^'"]+)['"]/i);
			orderby = a.match(/orderby=['"]([^'"]+)['"]/i);

if ( link && link[1] ) {
				t.I('linkto-file').checked = 'checked';
			}
			if ( order && order[1] ) {
				t.I('order-desc').checked = 'checked';
			}
			if ( columns && columns[1] ) {
				t.I('columns').value = '' + columns[1];
			}
			if ( orderby && orderby[1] ) {
				t.I('orderby').value = orderby[1];
			}
		} else {
			jQuery('#insert-gallery').show();
		}
	},

update : function() {
		var t = this, ed = t.editor, all = '', s;

if ( ! t.mcemode || ! t.is_update ) {
			s = '[gallery' + t.getSettings() + ']';
			t.getWin().send_to_editor(s);
			return;
		}

if ( t.el.nodeName !== 'IMG' ) {
			return;
		}

all = ed.dom.decode( ed.dom.getAttrib( t.el, 'title' ) );
		all = all.replace(/\s*(order|link|columns|orderby)=['"]([^'"]+)['"]/gi, '');
		all += t.getSettings();

ed.dom.setAttrib(t.el, 'title', all);
		t.getWin().tb_remove();
	},

getSettings : function() {
		var I = this.I, s = '';

if ( I('linkto-file').checked ) {
			s += ' link="file"';
			setUserSetting('galfile', '1');
		}

if ( I('order-desc').checked ) {
			s += ' order="DESC"';
			setUserSetting('galdesc', '1');
		}

if ( I('columns').value !== 3 ) {
			s += ' columns="' + I('columns').value + '"';
			setUserSetting('galcols', I('columns').value);
		}

if ( I('orderby').value !== 'menu_order' ) {
			s += ' orderby="' + I('orderby').value + '"';
			setUserSetting('galord', I('orderby').value);
		}

return s;
	}
};

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