User:Ais523/catwatch.js

/* Category watch (User:ais523/catwatch.js); adds entries on the watchlist if a page is

added to a category (and is still in the category when the watchlist is checked). The entry

will only appear if there is another page on the watchlist edited that day (if the addition

was the only change on that day, it's neglected). The recategorisation of a page in a watched

category will also trigger the watching, even if it's a different category that's added or

removed (unless the watched category is removed); removals from the watched category can't

be detected.

A previous version of this script had a limit on the maximum size of a category that could be

watched; this limit no longer exists.

Thanks to User:TheDJ for helping me make this compatible with more browsers and preference

settings, and to Roan Kattouw for fixing bugzilla:11275 and making this cheap on the servers.

Note that some users have had problems installing this in Internet Explorer; if the second cachea

bypass (after changing the category watchlist) doesn't work, deleting all your temporary

Internet files seems to.

var cwwpajax;

// From WP:US mainpage (wpajax renamed to cwwpajax)

cwwpajax={

download:function(bundle) {

// mandatory: bundle.url

// mandatory: bundle.async

// optional: bundle.onSuccess (xmlhttprequest, bundle)

// optional: bundle.onFailure (xmlhttprequest, bundle)

// optional: bundle.otherStuff OK too, passed to onSuccess and onFailure

var x = window.XMLHttpRequest ? new XMLHttpRequest() // Firefox, Safari, Opera, IE7

: window.ActiveXObject ? new ActiveXObject("Microsoft.XMLHTTP") // IE6

: false;

if (x) {

x.onreadystatechange=function() {

x.readyState==4 && cwwpajax.downloadComplete(x,bundle);

};

x.open("GET",bundle.url,bundle.async);

x.send(null);

}

return x;

downloadComplete:function(x,bundle) {

x.status==200 && ( bundle.onSuccess && bundle.onSuccess(x,bundle) || true )

|| ( bundle.onFailure && bundle.onFailure(x,bundle) || alert(x.statusText));

}

};

// Example:

// function dlComplete(xmlreq, data) {

// alert(data.message + xmlreq.responseText);

// }

// cwwpajax.download({url:'http://en.wikipedia.org/w/index.php?title=Thresher&action=raw',

// onSuccess: dlComplete, message: "Here's what we got:\n\n" });

// End of WP:US quote

function cwOntoWatchlist(xmlreq, data)

{

var a=xmlreq.responseText;

var c=data.catname;

var i;

var diag="";

if(a.indexOf("")!=-1) return; //cat is empty, nothing to do here

if(a.indexOf('title="')==-1) return; // this error happens sometimes, just do nothing here

var latesttime=0;

var latestpage="";

var temp, temp2;

latestpage=a.split('title="')[1].split('" timestamp=')[0];

latesttime=a.split('timestamp="')[1].split('"/>')[0];

a=document.getElementsByTagName("h4"); //get dates in the watchlist

var monthname=[];

monthname['01']="January";

monthname['02']="February";

monthname['03']="March";

monthname['04']="April";

monthname['05']="May";

monthname['06']="June";

monthname['07']="July";

monthname['08']="August";

monthname['09']="September";

monthname['10']="October";

monthname['11']="November";

monthname['12']="December";

latesttime=new String(latesttime);

var mn1, mn2, mn3, mn4;

// Allow for different date styles:

// January 29, 2001

mn1=""+monthname[latesttime.substr(5,2)]+" "+new Number(latesttime.substr(8,2))+

", "+latesttime.substr(0,4);

// 29 January 2001

mn2=""+new Number(latesttime.substr(8,2))+" "+monthname[latesttime.substr(5,2)]+

" "+latesttime.substr(0,4);

// 2001 January 29

mn3=""+latesttime.substr(0,4)+" "+monthname[latesttime.substr(5,2)]+

" "+new Number(latesttime.substr(8,2));

// 2001-01-29

mn4=""+latesttime.substr(0,4)+"-"+latesttime.substr(5,2)+"-"+latesttime.substr(8,2);

i=a.length;

while(i--)

{

if(a[i].innerHTML==mn1||a[i].innerHTML==mn2||a[i].innerHTML==mn3||a[i].innerHTML==mn4)

{

diag+=a[i].innerHTML+":";

temp=a[i].nextSibling.firstChild;

if(temp==null) temp=a[i].nextSibling.nextSibling.firstChild;

while(temp!=null)

{

diag+=temp.tagname+"!";

if(temp.tagName!=null)

if(temp.tagName.toLowerCase()=="li")

{

temp2=temp.innerHTML.match(/([0-9][0-9]):([0-9][0-9])(:[0-9][0-9])?<\/span>/i) || [];

temp2=new Number(temp2[1])*100+new Number(temp2[2]);

diag+=temp2+",";

if(temp2

}

temp2=temp; temp=temp.nextSibling;

if(temp==null) break;

}

temp=document.createElement("li");

if(temp2==null) {return;}

if(a[i].nextSibling.firstChild!==null) // IE-like whitespace handling

a[i].nextSibling.insertBefore(temp,temp2);

else // Firefox-like whitespace handling

a[i].nextSibling.nextSibling.insertBefore(temp,temp2);

temp.innerHTML="(diff | hist) . .

"href='"+mw.config.get('wgScriptPath')+"/index.php?title=Category:"+

encodeURI(c)+

"'>Category:"+c+"; "+latesttime.substr(11,2)+":"+latesttime.substr(14,2)+

" . . (+

"href='"+mw.config.get('wgScriptPath')+'/index.php?title='+

encodeURI(latestpage)+"'>"+latestpage+" "+

"(last))";

return;

}

var WatchedCategories;

//An example of a query to check a category would be

//http://en.wikipedia.org/w/api.php?action=query&list=categorymembers&cmcategory=Wikipedia%20protected%20edit%20requests&cmlimit=1&cmprop=title|timestamp&cmsort=timestamp&cmdir=desc&format=xml

$(function(){

var scriptPath = mw.config.get('wgScriptPath');

//DHTMLloadscript( 'http://en.wikipedia.org/w/index.php?title=User:'+mw.config.get('wgUserName')

// +'/WatchedCategories.js&action=raw&ctype=text/javascript');

if(mw.config.get('wgPageName')=="Special:Watchlist")

{

// load the script using AJAX, because DHTML fails in Firefox and document.write fails in Safari

var sru=scriptPath+'/index.php?title=User:'+mw.config.get('wgUserName')+'/WatchedCategories.js&action=raw&ctype=text/javascript';

var sr=cwwpajax.download({url:sru,async:false});

eval(sr.responseText);

if(WatchedCategories===undefined)

{

if(confirm("You don't have a category watchlist yet. Do you want to create one?\n\n"+

"(Please provide the following debug information when reporting a problem if "+

"this message comes up when you already have a category watchlist: "+

(sr.responseText.length<50 ? "responseText='"+sr.responseText+"'" :

"responseText.length="+sr.responseText.length)+", statusText='"+sr.statusText

+"'.)"))

location.href=scriptPath+'/index.php?title=User:'+mw.config.get('wgUserName')+

'/WatchedCategories.js&action=edit&preload=User:Ais523/WatchedCategoriesTemplate.js';

}

else

{

var i;

for(i=0; i

{

var a=WatchedCategories[i];

cwwpajax.download({url:scriptPath+'/api.php?action=query&list=categorymembers&'

+'cmtitle=Category:'+encodeURI(a)+'&cmlimit=1&cmprop=title'

+'|timestamp&cmsort=timestamp&cmdir=desc&format=xml',

onSuccess:cwOntoWatchlist,

catname:a, async:true});

}

});