// <nowiki>   (function($) {   /*  ****************************************  *** twinklebatchdelete.js: Batch delete module (sysops only)  ****************************************  * Mode of invocation:     Tab ("D-batch")  * Active on:              Existing non-articles, and Special:PrefixIndex  */  Twinkle.batchdelete = function twinklebatchdelete() { 	if ( 		Morebits.userIsSysop && ( 			(mw.config.get('wgCurRevisionId') && mw.config.get('wgNamespaceNumber') > 0) || 			mw.config.get('wgCanonicalSpecialPageName') === 'Prefixindex' 		) 	) { 		Twinkle.addPortletLink(Twinkle.batchdelete.callback, 'D-batch', 'tw-batch', 'Delete pages found in this category/on this page'); 	} };  Twinkle.batchdelete.unlinkCache = {};  // Has the subpages list been loaded? var subpagesLoaded;  Twinkle.batchdelete.callback = function twinklebatchdeleteCallback() { 	subpagesLoaded = false; 	var Window = new Morebits.simpleWindow(600, 400); 	Window.setTitle('Batch deletion'); 	Window.setScriptName('Twinkle'); 	Window.addFooterLink('Twinkle help', 'WP:TW/DOC#batchdelete');  	var form = new Morebits.quickForm(Twinkle.batchdelete.callback.evaluate); 	form.append({ 		type: 'checkbox', 		list: [ 			{ 				label: 'Delete pages', 				name: 'delete_page', 				value: 'delete', 				checked: true, 				subgroup: { 					type: 'checkbox', 					list: [ 						{ 							label: 'Delete associated talk pages (except user talk pages)', 							name: 'delete_talk', 							value: 'delete_talk', 							checked: true 						}, 						{ 							label: 'Delete redirects to deleted pages', 							name: 'delete_redirects', 							value: 'delete_redirects', 							checked: true 						}, 						{ 							label: 'Delete subpages of deleted pages', 							name: 'delete_subpages', 							value: 'delete_subpages', 							checked: false, 							event: Twinkle.batchdelete.callback.toggleSubpages, 							subgroup: { 								type: 'checkbox', 								list: [ 									{ 										label: 'Delete talk pages of deleted subpages', 										name: 'delete_subpage_talks', 										value: 'delete_subpage_talks' 									}, 									{ 										label: 'Delete redirects to deleted subpages', 										name: 'delete_subpage_redirects', 										value: 'delete_subpage_redirects' 									}, 									{ 										label: 'Unlink backlinks to each deleted subpage (in Main and Portal namespaces only)', 										name: 'unlink_subpages', 										value: 'unlink_subpages' 									} 								] 							} 						} 					] 				} 			}, 			{ 				label: 'Unlink backlinks to each page (in Main and Portal namespaces only)', 				name: 'unlink_page', 				value: 'unlink', 				checked: false 			}, 			{ 				label: 'Remove usages of each file (in all namespaces)', 				name: 'unlink_file', 				value: 'unlink_file', 				checked: true 			} 		] 	}); 	form.append({ 		type: 'input', 		name: 'reason', 		label: 'Reason: ', 		size: 60 	});  	var query = { 		'action': 'query', 		'prop': 'revisions|info|imageinfo', 		'inprop': 'protection', 		'rvprop': 'size|user' 	};  	// On categories 	if (mw.config.get('wgNamespaceNumber') === 14) { 		query.generator = 'categorymembers'; 		query.gcmtitle = mw.config.get('wgPageName'); 		query.gcmlimit = Twinkle.getPref('batchMax');  	// On Special:PrefixIndex 	} else if (mw.config.get('wgCanonicalSpecialPageName') === 'Prefixindex') {  		query.generator = 'allpages'; 		query.gaplimit = Twinkle.getPref('batchMax'); 		if (mw.util.getParamValue('prefix')) { 			query.gapnamespace = mw.util.getParamValue('namespace'); 			query.gapprefix = mw.util.getParamValue('prefix'); 		} else { 			var pathSplit = decodeURIComponent(location.pathname).split('/'); 			if (pathSplit.length < 3 || pathSplit[2] !== 'Special:PrefixIndex') { 				return; 			} 			var titleSplit = pathSplit[3].split(':'); 			query.gapnamespace = mw.config.get('wgNamespaceIds')[titleSplit[0].toLowerCase()]; 			if (titleSplit.length < 2 || typeof query.gapnamespace === 'undefined') { 				query.gapnamespace = 0;  // article namespace 				query.gapprefix = pathSplit.splice(3).join('/'); 			} else { 				pathSplit = pathSplit.splice(4); 				pathSplit.splice(0, 0, titleSplit.splice(1).join(':')); 				query.gapprefix = pathSplit.join('/'); 			} 		}  	// On normal pages 	} else { 		query.generator = 'links'; 		query.titles = mw.config.get('wgPageName'); 		query.gpllimit = Twinkle.getPref('batchMax'); 	}  	var statusdiv = document.createElement('div'); 	statusdiv.style.padding = '15px';  // just so it doesn't look broken 	Window.setContent(statusdiv); 	Morebits.status.init(statusdiv); 	Window.display();  	Twinkle.batchdelete.pages = {};  	var statelem = new Morebits.status('Grabbing list of pages'); 	var wikipedia_api = new Morebits.wiki.api('loading...', query, function(apiobj) { 		var xml = apiobj.responseXML; 		var $pages = $(xml).find('page').filter(':not([missing])');  // :not([imagerepository="shared"]) 		$pages.each(function(index, page) { 			var $page = $(page); 			var ns = $page.attr('ns'); 			var title = $page.attr('title'); 			var isRedir = $page.attr('redirect') === ''; 			var $editprot = $page.find('pr[type="edit"][level="sysop"]'); 			var isProtected = $editprot.length > 0; 			var size = $page.find('rev').attr('size');  			var metadata = []; 			if (isRedir) { 				metadata.push('redirect'); 			} 			if (isProtected) { 				metadata.push('fully protected' + 				($editprot.attr('expiry') === 'infinity' ? ' indefinitely' : ', expires ' + new Morebits.date($editprot.attr('expiry')).calendar('utc') + ' (UTC)')); 			} 			if (ns === '6') {  // mimic what delimages used to show for files 				metadata.push('uploader: ' + $page.find('ii').attr('user')); 				metadata.push('last edit from: ' + $page.find('rev').attr('user')); 			} else { 				metadata.push(size + ' bytes'); 			} 			Twinkle.batchdelete.pages[title] = { 				label: title + (metadata.length ? ' (' + metadata.join('; ') + ')' : ''), 				value: title, 				checked: true, 				style: isProtected ? 'color:red' : '' 			}; 		});  		var form = apiobj.params.form; 		form.append({ type: 'header', label: 'Pages to delete' }); 		form.append({ 			type: 'button', 			label: 'Select All', 			event: function dBatchSelectAll() { 				$(result).find('input[name=pages]:not(:checked)').each(function(_, e) { 					e.click(); // check it, and invoke click event so that subgroup can be shown 				});  				// Check any unchecked subpages too 				$('input[name="pages.subpages"]').prop('checked', true); 			} 		}); 		form.append({ 			type: 'button', 			label: 'Deselect All', 			event: function dBatchDeselectAll() { 				$(result).find('input[name=pages]:checked').each(function(_, e) { 					e.click(); // uncheck it, and invoke click event so that subgroup can be hidden 				}); 			} 		}); 		form.append({ 			type: 'checkbox', 			name: 'pages', 			id: 'tw-dbatch-pages', 			list: $.map(Twinkle.batchdelete.pages, function (e) { 				return e; 			}) 		}); 		form.append({ type: 'submit' });  		var result = form.render(); 		apiobj.params.Window.setContent(result);  		var pageCheckboxes = Morebits.quickForm.getElements(result, 'pages') || []; 		pageCheckboxes.forEach(generateArrowLinks); 		Morebits.checkboxShiftClickSupport(pageCheckboxes);  	}, statelem);  	wikipedia_api.params = { form: form, Window: Window }; 	wikipedia_api.post(); };  function generateArrowLinks (checkbox) { 	var link = Morebits.htmlNode('a', ' >'); 	link.setAttribute('class', 'tw-dbatch-page-link'); 	link.setAttribute('href', mw.util.getUrl(checkbox.value)); 	link.setAttribute('target', '_blank'); 	checkbox.nextElementSibling.append(link); }  Twinkle.batchdelete.generateNewPageList = function(form) {  	// Update the list of checked pages in Twinkle.batchdelete.pages object 	var elements = form.elements.pages; 	if (elements instanceof NodeList) { // if there are multiple pages 		for (var i = 0; i < elements.length; ++i) { 			Twinkle.batchdelete.pages[elements[i].value].checked = elements[i].checked; 		} 	} else if (elements instanceof HTMLInputElement) { // if there is just one page 		Twinkle.batchdelete.pages[elements.value].checked = elements.checked; 	}  	return new Morebits.quickForm.element({ 		type: 'checkbox', 		name: 'pages', 		id: 'tw-dbatch-pages', 		list: $.map(Twinkle.batchdelete.pages, function (e) { 			return e; 		}) 	}).render(); };  Twinkle.batchdelete.callback.toggleSubpages = function twDbatchToggleSubpages(e) {  	var form = e.target.form; 	var newPageList, pageCheckboxes, subpageCheckboxes;  	if (e.target.checked) {  		form.delete_subpage_redirects.checked = form.delete_redirects.checked; 		form.delete_subpage_talks.checked = form.delete_talk.checked; 		form.unlink_subpages.checked = form.unlink_page.checked;  		// If lists of subpages were already loaded once, they are 		// available without use of any API calls 		if (subpagesLoaded) {  			$.each(Twinkle.batchdelete.pages, function(i, el) { 				// Get back the subgroup from subgroup_, where we saved it 				if (el.subgroup === null && el.subgroup_) { 					el.subgroup = el.subgroup_; 				} 			});  			newPageList = Twinkle.batchdelete.generateNewPageList(form); 			$('#tw-dbatch-pages').replaceWith(newPageList);  			pageCheckboxes = Morebits.quickForm.getElements(newPageList, 'pages') || []; 			pageCheckboxes.forEach(generateArrowLinks); 			Morebits.checkboxShiftClickSupport(pageCheckboxes);  			subpageCheckboxes = Morebits.quickForm.getElements(newPageList, 'pages.subpages') || []; 			subpageCheckboxes.forEach(generateArrowLinks); 			Morebits.checkboxShiftClickSupport(subpageCheckboxes);  			return; 		}  		// Proceed with API calls to get list of subpages 		var loadingText = '<strong id="dbatch-subpage-loading">Loading... </strong>'; 		$(e.target).after(loadingText);  		var pages = $(form.pages).map(function(i, el) { 			return el.value; 		}).get();  		var subpageLister = new Morebits.batchOperation(); 		subpageLister.setOption('chunkSize', Twinkle.getPref('batchdeleteChunks')); 		subpageLister.setPageList(pages); 		subpageLister.run(function worker (pageName) { 			var pageTitle = mw.Title.newFromText(pageName);  			// No need to look for subpages in main/file/mediawiki space 			if ([0, 6, 8].indexOf(pageTitle.namespace) > -1) { 				subpageLister.workerSuccess(); 				return; 			}  			var wikipedia_api = new Morebits.wiki.api('Getting list of subpages of ' + pageName, { 				action: 'query', 				prop: 'revisions|info|imageinfo', 				generator: 'allpages', 				rvprop: 'size', 				inprop: 'protection', 				gapprefix: pageTitle.title + '/', 				gapnamespace: pageTitle.namespace, 				gaplimit: 'max', // 500 is max for normal users, 5000 for bots and sysops 				pageNameFull: pageName // Not used by API, but added for access in onSuccess() 			}, function onSuccess(apiobj) { 				var xml = apiobj.responseXML; 				var $pages = $(xml).find('page'); 				var subpageList = []; 				$pages.each(function(index, page) { 					var $page = $(page); 					var ns = $page.attr('ns'); 					var title = $page.attr('title'); 					var isRedir = $page.attr('redirect') === ''; 					var $editprot = $page.find('pr[type="edit"][level="sysop"]');  					var isProtected = $editprot.length > 0; 					var size = $page.find('rev').attr('size');  					var metadata = []; 					if (isRedir) { 						metadata.push('redirect'); 					} 					if (isProtected) { 						metadata.push('fully protected' + 						($editprot.attr('expiry') === 'infinity' ? ' indefinitely' : ', expires ' + new Morebits.date($editprot.attr('expiry')).calendar('utc') + ' (UTC)')); 					} 					if (ns === '6') {  // mimic what delimages used to show for files 						metadata.push('uploader: ' + $page.find('ii').attr('user')); 						metadata.push('last edit from: ' + $page.find('rev').attr('user')); 					} else { 						metadata.push(size + ' bytes'); 					} 					subpageList.push({ 						label: title + (metadata.length ? ' (' + metadata.join('; ') + ')' : ''), 						value: title, 						checked: true, 						style: isProtected ? 'color:red' : '' 					}); 				}); 				if (subpageList.length) { 					var pageName = apiobj.query.pageNameFull; 					Twinkle.batchdelete.pages[pageName].subgroup = { 						type: 'checkbox', 						name: 'subpages', 						className: 'dbatch-subpages', 						list: subpageList 					}; 				} 				subpageLister.workerSuccess(); 			}, null /* statusElement */, function onFailure() { 				subpageLister.workerFailure(); 			}); 			wikipedia_api.post();  		}, function postFinish () { 			// List 'em on the interface  			newPageList = Twinkle.batchdelete.generateNewPageList(form); 			$('#tw-dbatch-pages').replaceWith(newPageList);  			pageCheckboxes = Morebits.quickForm.getElements(newPageList, 'pages') || []; 			pageCheckboxes.forEach(generateArrowLinks); 			Morebits.checkboxShiftClickSupport(pageCheckboxes);  			subpageCheckboxes = Morebits.quickForm.getElements(newPageList, 'pages.subpages') || []; 			subpageCheckboxes.forEach(generateArrowLinks); 			Morebits.checkboxShiftClickSupport(subpageCheckboxes);  			subpagesLoaded = true;  			// Remove "Loading... " text 			$('#dbatch-subpage-loading').remove();  		});  	} else if (!e.target.checked) {  		$.each(Twinkle.batchdelete.pages, function(i, el) { 			if (el.subgroup) { 				// Remove subgroup after saving its contents in subgroup_ 				// so that it can be retrieved easily if user decides to 				// delete the subpages again 				el.subgroup_ = el.subgroup; 				el.subgroup = null; 			} 		});  		newPageList = Twinkle.batchdelete.generateNewPageList(form); 		$('#tw-dbatch-pages').replaceWith(newPageList);  		pageCheckboxes = Morebits.quickForm.getElements(newPageList, 'pages') || []; 		pageCheckboxes.forEach(generateArrowLinks); 		Morebits.checkboxShiftClickSupport(pageCheckboxes);  	} };  Twinkle.batchdelete.callback.evaluate = function twinklebatchdeleteCallbackEvaluate(event) { 	Morebits.wiki.actionCompleted.notice = 'Batch deletion is now complete';  	var form = event.target;  	var numProtected = $(Morebits.quickForm.getElements(form, 'pages')).filter(function(index, element) { 		return element.checked && element.nextElementSibling.style.color === 'red'; 	}).length; 	if (numProtected > 0 && !confirm('You are about to delete ' + numProtected + ' fully protected page(s). Are you sure?')) { 		return; 	}  	var pages = form.getChecked('pages'); 	var subpages = form.getChecked('pages.subpages'); 	var reason = form.reason.value; 	var delete_page = form.delete_page.checked; 	var delete_talk, delete_redirects, delete_subpages; 	var delete_subpage_redirects, delete_subpage_talks, unlink_subpages; 	if (delete_page) { 		delete_talk = form.delete_talk.checked; 		delete_redirects = form.delete_redirects.checked; 		delete_subpages = form.delete_subpages.checked; 		if (delete_subpages) { 			delete_subpage_redirects = form.delete_subpage_redirects.checked; 			delete_subpage_talks = form.delete_subpage_talks.checked; 			unlink_subpages = form.unlink_subpages.checked; 		} 	} 	var unlink_page = form.unlink_page.checked; 	var unlink_file = form.unlink_file.checked; 	if (!reason) { 		alert('You need to give a reason, you cabal crony!'); 		return; 	} 	Morebits.simpleWindow.setButtonsEnabled(false); 	Morebits.status.init(form); 	if (!pages) { 		Morebits.status.error('Error', 'nothing to delete, aborting'); 		return; 	}  	var pageDeleter = new Morebits.batchOperation(delete_page ? 'Deleting pages' : 'Initiating requested tasks'); 	pageDeleter.setOption('chunkSize', Twinkle.getPref('batchdeleteChunks')); 	// we only need the initial status lines if we're deleting the pages in the pages array 	pageDeleter.setOption('preserveIndividualStatusLines', delete_page); 	pageDeleter.setPageList(pages); 	pageDeleter.run(function worker(pageName) { 		var params = { 			page: pageName, 			delete_page: delete_page, 			delete_talk: delete_talk, 			delete_redirects: delete_redirects, 			unlink_page: unlink_page, 			unlink_file: unlink_file && /^(File|Image):/i.test(pageName), 			reason: reason, 			pageDeleter: pageDeleter 		};  		var wikipedia_page = new Morebits.wiki.page(pageName, 'Deleting page ' + pageName); 		wikipedia_page.setCallbackParameters(params); 		if (delete_page) { 			wikipedia_page.setEditSummary(reason + Twinkle.getPref('deletionSummaryAd')); 			wikipedia_page.suppressProtectWarning(); 			wikipedia_page.deletePage(Twinkle.batchdelete.callbacks.doExtras, pageDeleter.workerFailure); 		} else { 			Twinkle.batchdelete.callbacks.doExtras(wikipedia_page); 		} 	}, function postFinish() { 		if (delete_subpages) { 			var subpageDeleter = new Morebits.batchOperation('Deleting subpages'); 			subpageDeleter.setOption('chunkSize', Twinkle.getPref('batchdeleteChunks')); 			subpageDeleter.setOption('preserveIndividualStatusLines', true); 			subpageDeleter.setPageList(subpages); 			subpageDeleter.run(function(pageName) { 				var params = { 					page: pageName, 					delete_page: true, 					delete_talk: delete_subpage_talks, 					delete_redirects: delete_subpage_redirects, 					unlink_page: unlink_subpages, 					unlink_file: false, 					reason: reason, 					pageDeleter: subpageDeleter 				};  				var wikipedia_page = new Morebits.wiki.page(pageName, 'Deleting subpage ' + pageName); 				wikipedia_page.setCallbackParameters(params); 				wikipedia_page.setEditSummary(reason + Twinkle.getPref('deletionSummaryAd')); 				wikipedia_page.suppressProtectWarning(); 				wikipedia_page.deletePage(Twinkle.batchdelete.callbacks.doExtras, pageDeleter.workerFailure); 			}); 		} 	}); };  Twinkle.batchdelete.callbacks = { 	// this stupid parameter name is a temporary thing until I implement an overhaul 	// of Morebits.wiki.* callback parameters 	doExtras: function(thingWithParameters) { 		var params = thingWithParameters.parent ? thingWithParameters.parent.getCallbackParameters() : 			thingWithParameters.getCallbackParameters(); 		// the initial batch operation's job is to delete the page, and that has 		// succeeded by now 		params.pageDeleter.workerSuccess(thingWithParameters);  		var query, wikipedia_api;  		if (params.unlink_page) { 			Twinkle.batchdelete.unlinkCache = {}; 			query = { 				'action': 'query', 				'list': 'backlinks', 				'blfilterredir': 'nonredirects', 				'blnamespace': [0, 100], // main space and portal space only 				'bltitle': params.page, 				'bllimit': 'max' // 500 is max for normal users, 5000 for bots and sysops 			}; 			wikipedia_api = new Morebits.wiki.api('Grabbing backlinks', query, Twinkle.batchdelete.callbacks.unlinkBacklinksMain); 			wikipedia_api.params = params; 			wikipedia_api.post(); 		}  		if (params.unlink_file) { 			query = { 				'action': 'query', 				'list': 'imageusage', 				'iutitle': params.page, 				'iulimit': 'max' // 500 is max for normal users, 5000 for bots and sysops 			}; 			wikipedia_api = new Morebits.wiki.api('Grabbing file links', query, Twinkle.batchdelete.callbacks.unlinkImageInstancesMain); 			wikipedia_api.params = params; 			wikipedia_api.post(); 		}  		if (params.delete_page) { 			if (params.delete_redirects) { 				query = { 					'action': 'query', 					'titles': params.page, 					'prop': 'redirects', 					'rdlimit': 'max' // 500 is max for normal users, 5000 for bots and sysops 				}; 				wikipedia_api = new Morebits.wiki.api('Grabbing redirects', query, Twinkle.batchdelete.callbacks.deleteRedirectsMain); 				wikipedia_api.params = params; 				wikipedia_api.post(); 			} 			if (params.delete_talk) { 				var pageTitle = mw.Title.newFromText(params.page); 				if (pageTitle && pageTitle.namespace % 2 === 0 && pageTitle.namespace !== 2) { 					pageTitle.namespace++;  // now pageTitle is the talk page title! 					query = { 						'action': 'query', 						'titles': pageTitle.toText() 					}; 					wikipedia_api = new Morebits.wiki.api('Checking whether talk page exists', query, Twinkle.batchdelete.callbacks.deleteTalk); 					wikipedia_api.params = params; 					wikipedia_api.params.talkPage = pageTitle.toText(); 					wikipedia_api.post(); 				} 			} 		} 	}, 	deleteRedirectsMain: function(apiobj) { 		var xml = apiobj.responseXML; 		var pages = $(xml).find('rd').map(function() { 			return $(this).attr('title'); 		}).get(); 		if (!pages.length) { 			return; 		}  		var redirectDeleter = new Morebits.batchOperation('Deleting redirects to ' + apiobj.params.page); 		redirectDeleter.setOption('chunkSize', Twinkle.getPref('batchdeleteChunks')); 		redirectDeleter.setPageList(pages); 		redirectDeleter.run(function(pageName) { 			var wikipedia_page = new Morebits.wiki.page(pageName, 'Deleting ' + pageName); 			wikipedia_page.setEditSummary('[[WP:CSD#G8|G8]]: Redirect to deleted page "' + apiobj.params.page + '"' + Twinkle.getPref('deletionSummaryAd')); 			wikipedia_page.deletePage(redirectDeleter.workerSuccess, redirectDeleter.workerFailure); 		}); 	}, 	deleteTalk: function(apiobj) { 		var xml = apiobj.responseXML; 		var exists = $(xml).find('page:not([missing])').length > 0;  		if (!exists) { 			// no talk page; forget about it 			return; 		}  		var page = new Morebits.wiki.page(apiobj.params.talkPage, 'Deleting talk page of article ' + apiobj.params.page); 		page.setEditSummary('[[WP:CSD#G8|G8]]: [[Help:Talk page|Talk page]] of deleted page "' + apiobj.params.page + '"' + Twinkle.getPref('deletionSummaryAd')); 		page.deletePage(); 	}, 	unlinkBacklinksMain: function(apiobj) { 		var xml = apiobj.responseXML; 		var pages = $(xml).find('bl').map(function() { 			return $(this).attr('title'); 		}).get(); 		if (!pages.length) { 			return; 		}  		var unlinker = new Morebits.batchOperation('Unlinking backlinks to ' + apiobj.params.page); 		unlinker.setOption('chunkSize', Twinkle.getPref('batchdeleteChunks')); 		unlinker.setPageList(pages); 		unlinker.run(function(pageName) { 			var wikipedia_page = new Morebits.wiki.page(pageName, 'Unlinking on ' + pageName); 			var params = $.extend({}, apiobj.params); 			params.title = pageName; 			params.unlinker = unlinker; 			wikipedia_page.setCallbackParameters(params); 			wikipedia_page.load(Twinkle.batchdelete.callbacks.unlinkBacklinks); 		}); 	}, 	unlinkBacklinks: function(pageobj) { 		var params = pageobj.getCallbackParameters(); 		if (!pageobj.exists()) { 			// we probably just deleted it, as a recursive backlink 			params.unlinker.workerSuccess(pageobj); 			return; 		}  		var text; 		if (params.title in Twinkle.batchdelete.unlinkCache) { 			text = Twinkle.batchdelete.unlinkCache[params.title]; 		} else { 			text = pageobj.getPageText(); 		} 		var old_text = text; 		var wikiPage = new Morebits.wikitext.page(text); 		wikiPage.removeLink(params.page);  		text = wikiPage.getText(); 		Twinkle.batchdelete.unlinkCache[params.title] = text; 		if (text === old_text) { 			// Nothing to do, return 			params.unlinker.workerSuccess(pageobj); 			return; 		} 		pageobj.setEditSummary('Removing link(s) to deleted page ' + params.page + Twinkle.getPref('deletionSummaryAd')); 		pageobj.setPageText(text); 		pageobj.setCreateOption('nocreate'); 		pageobj.setMaxConflictRetries(10); 		pageobj.save(params.unlinker.workerSuccess, params.unlinker.workerFailure); 	}, 	unlinkImageInstancesMain: function(apiobj) { 		var xml = apiobj.responseXML; 		var pages = $(xml).find('iu').map(function() { 			return $(this).attr('title'); 		}).get(); 		if (!pages.length) { 			return; 		}  		var unlinker = new Morebits.batchOperation('Unlinking backlinks to ' + apiobj.params.page); 		unlinker.setOption('chunkSize', Twinkle.getPref('batchdeleteChunks')); 		unlinker.setPageList(pages); 		unlinker.run(function(pageName) { 			var wikipedia_page = new Morebits.wiki.page(pageName, 'Removing file usages on ' + pageName); 			var params = $.extend({}, apiobj.params); 			params.title = pageName; 			params.unlinker = unlinker; 			wikipedia_page.setCallbackParameters(params); 			wikipedia_page.load(Twinkle.batchdelete.callbacks.unlinkImageInstances); 		}); 	}, 	unlinkImageInstances: function(pageobj) { 		var params = pageobj.getCallbackParameters(); 		if (!pageobj.exists()) { 			// we probably just deleted it, as a recursive backlink 			params.unlinker.workerSuccess(pageobj); 			return; 		}  		var image = params.page.replace(/^(?:Image|File):/, ''); 		var text; 		if (params.title in Twinkle.batchdelete.unlinkCache) { 			text = Twinkle.batchdelete.unlinkCache[params.title]; 		} else { 			text = pageobj.getPageText(); 		} 		var old_text = text; 		var wikiPage = new Morebits.wikitext.page(text); 		wikiPage.commentOutImage(image, 'Commented out because image was deleted');  		text = wikiPage.getText(); 		Twinkle.batchdelete.unlinkCache[params.title] = text; 		if (text === old_text) { 			pageobj.getStatusElement().error('failed to unlink image ' + image + ' from ' + pageobj.getPageName()); 			params.unlinker.workerFailure(pageobj); 			return; 		} 		pageobj.setEditSummary('Removing instance of file ' + image + ' that has been deleted because "' + params.reason + '")' + Twinkle.getPref('deletionSummaryAd')); 		pageobj.setPageText(text); 		pageobj.setCreateOption('nocreate'); 		pageobj.setMaxConflictRetries(10); 		pageobj.save(params.unlinker.workerSuccess, params.unlinker.workerFailure); 	} }; })(jQuery);   // </nowiki>