☰

Unlimited Paginator Works

Makes any(?) page with a paginator on various Danbooru clones "bottomless"--blend pages together or separate each with a paginator.

  1. // ==UserScript==
  2. // @name           Unlimited Paginator Works
  3. // @namespace      https://greasyfork.org/scripts/5250
  4. // @description    Makes any(?) page with a paginator on various Danbooru clones "bottomless"--blend pages together or separate each with a paginator.
  5. // @include        *://behoimi.org/*
  6. // @include        *://www.behoimi.org/*
  7. // @include        *://*.donmai.us/*
  8. // @include        *://konachan.tld/*
  9. // @include        *://yande.re/*
  10. // @version        2022.06.25
  11. // @grant          none
  12. // ==/UserScript==
  13.  
  14. //If true, each added page retains its paginator.  If false, elements are smoothly joined together.
  15. var pageBreak = false;
  16.  
  17. //Minimum amount of window left to scroll, maintained by loading more pages.
  18. var scrollBuffer = 600;
  19.  
  20. //Time (in ms) the script will wait for a response from the next page before attempting to fetch the page again.  If the script gets trapped in a loop trying to load the next page, increase this value.
  21. var timeToFailure = 15000;
  22.  
  23. //============================================================================
  24. //=========================Script initialization==============================
  25. //============================================================================
  26.  
  27. var nextPage, mainTable, mainParent, pending, timeout, iframe;
  28.  
  29. if( typeof(customF) != "undefined" )
  30. 	customF();
  31.  
  32. initialize();
  33. function initialize()
  34. {
  35. 	//Stop if inside an iframe
  36. 	if( window != window.top || scrollBuffer == 0 )
  37. 		return;
  38. 	
  39. 	//Stop if no "table"
  40. 	mainTable = getMainTable(document);
  41. 	if( !mainTable )
  42.     {
  43.         //console.log("UPW: No main table");
  44. 		return;
  45.     }
  46.     
  47. 	//Stop if no paginator
  48. 	var paginator = getPaginator(document);
  49. 	if( !paginator )
  50.     {
  51.         //console.log("UPW: No paginator found");
  52. 		return;
  53.     }
  54.     
  55. 	//Stop if no more pages
  56. 	nextPage = getNextPage(paginator);
  57. 	if( !nextPage )
  58. 		return;
  59. 	
  60. 	//Hide the blacklist sidebar, since this script breaks the tag totals and post unhiding.
  61. 	var sidebar = document.getElementById("blacklisted-sidebar");
  62. 	if( sidebar )
  63. 		sidebar.style.display = "none";
  64.  
  65. 	//Other important variables:
  66. 	scrollBuffer += window.innerHeight;
  67. 	mainParent = mainTable.parentNode;
  68. 	pending = false;
  69. 	
  70. 	iframe = document.createElement("iframe");
  71. 	iframe.width = iframe.height = 0;
  72. 	iframe.style.visibility = "hidden";
  73. 	document.body.appendChild(iframe);
  74.  
  75.     //Slight delay so that Danbooru's initialize_edit_links() has time to hide all the edit boxes on the Comment index
  76.     iframe.addEventListener("load", function(e){ setTimeout( appendNewContent, 100 ); }, false);
  77.     
  78. 	//Stop if empty page
  79. 	if( /<p>(Nothing to display.|Nobody here but us chickens!)<.p>/.test(mainTable.innerHTML) )
  80. 		return;
  81.  
  82. 	//Add copy of paginator to the top
  83. 	mainParent.insertBefore( paginator.cloneNode(true), mainParent.firstChild );
  84.  
  85. 	if( !pageBreak )
  86. 		paginator.style.display = "none";//Hide bottom paginator
  87. 	else
  88. 	{
  89. 		//Reposition bottom paginator and add horizontal break
  90. 		mainTable.parentNode.insertBefore( document.createElement("hr"), mainTable.nextSibling );
  91. 		mainTable.parentNode.insertBefore( paginator, mainTable.nextSibling );
  92. 	}
  93. 	
  94. 	//Listen for scroll events
  95. 	window.addEventListener("scroll", testScrollPosition, false);
  96. 	testScrollPosition();
  97. }
  98.  
  99. //============================================================================
  100. //============================Script functions================================
  101. //============================================================================
  102.  
  103. //Some pages match multiple "tables", so order is important.
  104. function getMainTable(source)
  105. {
  106. 	var xpath =
  107. 	[
  108. 		 ".//div[contains(@class,'posts-container') or contains(@class,'media-assets-container')]"   // Danbooru (posts, ai_tags, uploads)
  109. 		,".//div[@id='a-index']/table[not(contains(@class,'search'))]"	// Danbooru (/forum_topics, ...), take care that this doesn't catch comments containing tables
  110. 		,".//div[@id='a-index']"						// Danbooru (/comments, ...)
  111. 		
  112. 		,".//table[contains(@class,'highlight')]"		// large number of pages
  113. 		,".//div[contains(@id,'comment-list')]/div/.."	// comment index
  114. 		,".//*[not(contains(@id,'popular'))]/span[contains(@class,'thumb')]/a/../.."	// post/index, pool/show, note/index
  115. 		,".//li/div/a[contains(@class,'thumb')]/../../.."	// post/index, note/index
  116. 		,".//div[@id='content']//table/tbody/tr[contains(@class,'even')]/../.."	// user/index, wiki/history
  117. 		,".//div[@id='content']/div/table"				// 3dbooru user records
  118. 		,".//div[@id='forum']"							// forum/show
  119. 	];
  120. 	
  121. 	for( var i = 0; i < xpath.length; i++ )
  122. 	{
  123. 		getMainTable = (function(query){ return function(source)
  124. 		{
  125. 			return new XPathEvaluator().evaluate(query, source, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
  126. 		}; })( xpath[i] );
  127. 		
  128. 		var result = getMainTable(source);
  129. 		if( result )
  130. 		{
  131. 			//console.log("UPW main table: "+xpath[i]+"\n\n"+location.pathname);
  132. 			return result;
  133. 		}
  134. 	}
  135. 	
  136. 	return null;
  137. }
  138.  
  139. function getPaginator( source )
  140. {
  141. 	var pager = new XPathEvaluator().evaluate("descendant-or-self::div[@id='paginator' or contains(@class,'paginator') or @id='paginater']", source, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
  142. 	
  143. 	// Need clear:none to prevent the 2nd page from being pushed to below the sidebar on the Post index... but we don't want this when viewing a specific pool,
  144. 	// because then the paginator is shoved to the right of the last images on a page.  Other sites have issues with clear:none as well, like //yande.re/post.
  145. 	if( pager && location.host.indexOf("donmai.") >= 0 && document.getElementById("sidebar") )
  146. 		pager.style.clear = "none";
  147. 	
  148. 	return pager;
  149. }
  150.  
  151. function getNextPage( source )
  152. {
  153. 	let page = getPaginator(source);
  154. 	if( page )
  155. 		page = new XPathEvaluator().evaluate(".//a[@alt='next' or @rel='next' or contains(text(),'>') or contains(text(),'Next')]", page, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
  156.     
  157. 	return( page && page.href );
  158. }
  159.  
  160. function testScrollPosition()
  161. {
  162. 	if( !nextPage )
  163. 		testScrollPosition = function(){};
  164. 	
  165. 	//Take the max of the two heights for browser compatibility
  166. 	else if( !pending && window.pageYOffset + scrollBuffer > Math.max( document.documentElement.scrollHeight, document.documentElement.offsetHeight ) )
  167. 	{
  168. 		pending = true;
  169. 		timeout = setTimeout( function(){pending=false;testScrollPosition();}, timeToFailure );
  170. 		iframe.contentDocument.location.replace(nextPage);
  171. 	}
  172. }
  173.  
  174. function appendNewContent()
  175. {
  176. 	//Make sure page is correct.  Using 'indexOf' instead of '!=' because links like "https://danbooru.donmai.us/pools?page=2&search%5Border%5D=" become "https://danbooru.donmai.us/pools?page=2" in the iframe href.
  177. 	clearTimeout(timeout);
  178. 	if( nextPage.indexOf(iframe.contentDocument.location.href) < 0 )
  179. 	{
  180. 		setTimeout( function(){ pending = false; }, 1000 );
  181. 		return;
  182. 	}
  183.     
  184. 	//Copy content from retrived page to current page, but leave off certain headers, labels, etc...
  185.     var sourcePaginator = document.adoptNode( getPaginator(iframe.contentDocument) );
  186. 	var nextElem, deleteMe, source = document.adoptNode( getMainTable(iframe.contentDocument) );
  187. 	
  188. 	if( /<p>(Nothing to display.|Nobody here but us chickens!)<.p>/.test(source.innerHTML) )
  189. 		nextPage = null;
  190. 	else
  191. 	{
  192. 		nextPage = getNextPage(sourcePaginator);
  193.  
  194. 		if( pageBreak )
  195. 			mainParent.appendChild(source);
  196. 		else
  197. 		{
  198. 			//Hide elements separating one table from the next (h1 is used for user names on comment index)
  199. 			var rems = source.querySelectorAll("h2, h3, h4, thead, tfood");
  200. 			for( var i = 0; i < rems.length; i++ )
  201. 				rems[i].style.display = "none";
  202. 			
  203. 			//Move contents of next table into current one
  204. 			var fragment = document.createDocumentFragment();
  205. 			while( (nextElem = source.firstChild) )
  206. 				fragment.appendChild(nextElem);
  207. 			mainTable.appendChild(fragment);
  208. 		}
  209. 	}
  210.  
  211. 	//Add the paginator at the bottom if needed.
  212. 	if( !nextPage || pageBreak )
  213. 		mainParent.appendChild( sourcePaginator );
  214. 	if( pageBreak && nextPage )
  215. 		mainParent.appendChild( document.createElement("hr") );
  216. 	
  217. 	//Clear the pending request marker and check position again
  218. 	pending = false;
  219. 	testScrollPosition();
  220. }
  221.  
  222. // I am the code of my script.
  223. // HTML is my body, and JavaScript is my blood.
  224. // I have incorporated over a thousand paginators.
  225. // Unaware of loss.
  226. // Nor aware of gain.
  227. // Withstood boredom to include many pages,
  228. // Striving for the script's completion.
  229. // I have no regrets, this is the only path.
  230. // My whole life was "Unlimited Paginator Works."