User:Dr pda/articlehistory.js

//<pre>
//This function adds a link to the toolbox which, when clicked, searches the talk page history
//to find events which might be relevant to the {{ArticleHistory}} template. See the talk page for more details.
//
//To use this function add {{subst:js|User:Dr pda/articlehistory.js}} to your monobook.js
//
function loadXMLDocAppendingId(url,handler,id)
{
    url=url+id;
    // branch for native XMLHttpRequest object
    if (window.XMLHttpRequest) {
        var req = new XMLHttpRequest();
    }
    // branch for IE/Windows ActiveX version
    else if (window.ActiveXObject) {
        var req = new ActiveXObject("Microsoft.XMLHTTP");
   }
   if (req) {
     req.onreadystatechange = function () {handler(req,id)};
     req.open("GET", url, true);
     req.send("");
   }
}
 
function getArticleOldid(req,id) {
    // only if req shows "loaded"
    if (req.readyState == 4) {
        // only if "OK"
        if (req.status == 200) {
            // ...processing statements go here...
	 var response = req.responseXML.documentElement;
	 var rv = response.getElementsByTagName('rv');
	 var spannode = document.getElementById('oldid-'+id);
	 spannode.innerHTML = rv[0].getAttribute('revid');
	 var linode = document.getElementById(id);
	 linode.onclick='';
        } else {
            alert("There was a problem retrieving the XML data:\n" +
                req.statusText);
        }
    }
}
 
function getArticleOldidManual(req,id) {
    // only if req shows "loaded"
    if (req.readyState == 4) {
        // only if "OK"
        if (req.status == 200) {
            // ...processing statements go here...
	 var response = req.responseXML.documentElement;
	 var rv = response.getElementsByTagName('rv');
	 var spannode = document.getElementById('oldid-'+id);
 
	 var timestamp = rv[0].getAttribute('timestamp');
	 timestamp = timestamp.replace(/Z/g,'');
	 var prettytimestamp = timestamp.replace(/T/,', ');
	 timestamp = timestamp.replace(/[-T:]/g,'');
	 var idtime = id.substr(0,4)+'-'+id.substr(4,2)+'-'+id.substr(6,2)+', '+id.substr(8,2)+':'+id.substr(10,2)+':'+id.substr(12,2);
 
	 var revid = rv[0].getAttribute('revid');
 
	 spannode.innerHTML = 'The last version before '+idtime+' was at '+prettytimestamp+', with an oldid of '+revid+'. Click on the links to jump to the <a href="/w/index.php?title='+articleName+'&action=history&offset='+id+'">article history</a> or <a href="/w/index.php?title='+talkName+'&action=history&offset='+id+'">talk page history</a> at this point.';
        } else {
            alert("There was a problem retrieving the XML data:\n" +
                req.statusText);
        }
    }
}
 
function getHistoryMilestones(req) {
    // only if req shows "loaded"
    if (req.readyState == 4) {
        // only if "OK"
        if (req.status == 200) {
            // ...processing statements go here...
	 var response = req.responseXML.documentElement;
	 var revList = response.getElementsByTagName('rv');
	 var prettylastcomment = '';
	 var lasttimestamp = '';
	 var prettylasttimestamp = '';
 
         if(revList.length > 0){
	   for(var i=0; i<revList.length; i++){
	     var comment = revList[i].getAttribute('comment');
	     //strip out headers i.e. /*...*/
	     prettycomment=comment.replace(/\/\*.*\*\//,'');
	     comment=prettycomment.toLowerCase();
	     var timestamp = revList[i].getAttribute('timestamp');
	     timestamp = timestamp.replace(/Z/g,'');
	     var prettytimestamp = timestamp.replace(/T/,', ');
	     timestamp = timestamp.replace(/[-T:]/g,'');
 
             var output = document.getElementById("article-milestones");
	     if(comment.match('{{') || comment.match('featured') || comment.match('fac.?failed') || comment.match('review')|| comment.match(/\bfa\b/) || comment.match(/\bfac\b/) || comment.match(/\bga\b/) || comment.match(/\bgac\b/) || comment.match(/\bgafailed\b/) || comment.match(/\bga.?nominee\b/)|| comment.match('good article') || comment.match(/\bfar\b/) || comment.match(/\bfarc\b/) || comment.match(/\bfl\b/) || comment.match(/\bflrc\b/) || comment.match(/main.?page/) || comment.match('dyk') || comment.match('delist')){
	       var milestone = document.createElement("li");
	       spanid='oldid-'+timestamp;
	       milestone.innerHTML='<b>'+prettytimestamp+'</b> '+prettycomment+' <span id='+spanid+'>(oldid)</span>';
	       milestone.id=timestamp;
	       milestone.onclick=getArticleOldidWrapper;
	       output.appendChild(milestone);
             }
	     prettylastcomment = prettycomment;
	     lasttimestamp = timestamp;
	     prettylasttimestamp = prettytimestamp;
	   }
	   var getmore = document.getElementById("getmore");
	   getmore.innerHTML='(last entry read: <b>'+prettylasttimestamp+'</b> '+prettylastcomment+')';
           //Get more milestones, if any (if not, the program won't get here again)
           loadXMLDocAppendingId(talkQueryURL,getHistoryMilestones,'&rvend='+(parseInt(lasttimestamp)-1))
          }
        }
	 else {
            alert("There was a problem retrieving the XML data:\n" +
                req.statusText);
        }
    }
}
 
function getArticleOldidWrapper(event) {
  loadXMLDocAppendingId(articleQueryURL,getArticleOldid,this.id)
}
 
function manualDate(event)
  {
  var mydate=prompt("Enter the date for which you want the oldid","")
  if (mydate!=null && mydate!=""){
    var utc = Date.parse(mydate+' UTC');
    var d = new Date();
    d.setTime(utc);
    if((d.getUTCHours()+d.getUTCMinutes()) == 0){
      d.setUTCHours(23);
      d.setUTCMinutes(59);
      d.setUTCSeconds(59);
    }
    var timestamp ='';
    timestamp += d.getUTCFullYear();
    timestamp += (d.getUTCMonth()<10) ? '0'+(d.getUTCMonth()+1) : (d.getUTCMonth()+1);
    timestamp += (d.getUTCDate()<10) ? '0'+ d.getUTCDate() : d.getUTCDate();
    timestamp += (d.getUTCHours()<10) ? '0'+ d.getUTCHours() : d.getUTCHours();
    timestamp += (d.getUTCMinutes()<10) ? '0'+ d.getUTCMinutes() : d.getUTCMinutes();
    timestamp += (d.getUTCSeconds()<10) ? '0'+ d.getUTCSeconds() : d.getUTCSeconds();
 
    var dateoldid = document.createElement("p");
    dateoldid.id = 'oldid-'+timestamp;
    output.parentNode.insertBefore(dateoldid,enterdate.nextSibling); 
    loadXMLDocAppendingId(articleQueryURL,getArticleOldidManual,timestamp)
    }
  }
 
//Javascript URL encode function from http://cass-hacks.com/articles/code/js_url_encode_decode/
//(CC-BY-NC 2.5 Licence)
function URLEncode (clearString) {
  var output = '';
  var x = 0;
  clearString = clearString.toString();
  var regex = /(^[a-zA-Z0-9_.]*)/;
  while (x < clearString.length) {
    var match = regex.exec(clearString.substr(x));
    if (match != null && match.length > 1 && match[1] != '') {
    	output += match[1];
      x += match[1].length;
    } else {
      if (clearString[x] == ' ')
        output += '+';
      else {
        var charCode = clearString.charCodeAt(x);
        var hexVal = charCode.toString(16);
        output += '%' + hexVal.toUpperCase();
      }
      x++;
    }
  }
  return output;
}
 
function getArticleHistory(){
 
 output = document.createElement("ul");
 output.id = "article-milestones";
 
 var dummy = document.getElementById("siteSub");
 dummy.parentNode.insertBefore(output, dummy.nextSibling);
 
 var getmore = document.createElement("p");
 getmore.id = 'getmore';
 output.parentNode.insertBefore(getmore,output.nextSibling); 
 
 enterdate = document.createElement("p");
 enterdate.id = 'enterdate';
 enterdate.innerHTML='<span style="background-color:lightblue;font-weight:bold;">Click here to enter a date manually</span>';
 enterdate.onclick = manualDate;
 output.parentNode.insertBefore(enterdate,getmore.nextSibling); 
 
 var pageName = wgPageName;
 articleName = (wgNamespaceNumber == 1) ? pageName.substr(5) : pageName;
 //Handle encoded characters, i.e. \x26 in wgPageName = %26 in URL
 articleName = URLEncode(articleName);
 talkName = 'Talk:'+articleName;
 //correctly handle article name when on a Talk page archive
 var archiveIndex = articleName.toLowerCase().indexOf("/archive");
 articleName = (archiveIndex == -1) ? articleName : articleName.substring(0,archiveIndex);
 
 //Use query.php instead of api.php since it has a limit of 200 instead of 50
 //var apiHistoryQuery = '/w/api.php?action=query&prop=revisions&titles='+talkName+'&rvlimit=50&rvprop=timestamp|comment&format=xml';
 
 talkQueryURL = '/w/query.php?what=revisions&titles='+talkName+'&rvlimit=200&rvcomments&format=xml';
 articleQueryURL = '/w/query.php?what=revisions&titles='+articleName+'&rvlimit=200&rvcomments&format=xml&rvend=';
 loadXMLDocAppendingId(talkQueryURL,getHistoryMilestones,'');
}
 
addOnloadHook(function () {
    addPortletLink('p-tb', 'javascript:getArticleHistory()', 'Article history', 't-article-history', 'Search Talk page history for events relevant to ArticleHistory template', '', '');
});
 
//</pre>