//PVP Archive Bookmarker 3.0 user script
//Verison 3.0
//29/11/2007
//Author: Vectorspace
// ==UserScript==
// @name PVP Archive Bookmarker
// @version 3.0
// @namespace http://homepage.ntlworld.com/vectorspace/greasemonkey/
// @description Version 3. Creates a button visible on pvponline.com comic pages that saves a setting to placemark the current comic viewed. If a placemark is present then creates a button to goto the placemarked comic. Version 3.0 is updated for Nov 2007 PVP website redesign.
// @include http://www.pvponline.com/*
// @include http://pvponline.com/*
// ==/UserScript==
(function()
{
//Get stored script preferences
var markedURL=GM_getValue("markedURL"); //Stored url
var trueURL=GM_getValue("trueURL"); //Stored url is actual url if true, stored url is previous comic url if false
var setListener=false; //Link event listener flags
var gotoListener=false;
var pathname=document.location.pathname; //Get page path name
document.addEventListener("unload",cleanupListeners,false); //Add document unload listener to clean up other listeners
//Create and style Set Placemark link
var aSet=document.createElement("a"); //Create new a element for set mark link
aSet.setAttribute("href","javascript:;"); //Set href
aSet.setAttribute("id","storeLink"); //Set id to storeLink
aSet.setAttribute("title","Click here to placemark the current comic"); //Set title
aSet.appendChild(document.createTextNode("Set Placemark")); //Append 'Set Placemark' text as child node
aSet.style.display="none;"; //Style display none
aSet.style.fontSize="12px"; //Style 12px font size
aSet.style.color="black;"; //Style font colour black
//Create br element to add newline between links
var divider=document.createElement("br");
//Create and style Goto Placemark link
var aGoto=document.createElement("a"); //Create new a element for goto mark link
aGoto.setAttribute("href","javascript:;"); //Set href
aGoto.setAttribute("id","gotoLink"); //Set id to gotoLink
aGoto.setAttribute("title","Click here to go to the last placemarked comic"); //Set title
aGoto.appendChild(document.createTextNode("Goto Placemark")); //Append 'Goto Placeark' text as child node
aGoto.style.display="none;"; //Style display none
aGoto.style.fontSize="12px"; //Style 12px font size
aGoto.style.color="black;"; //Style font colour black
//Page type flags
var latest=false; //Is latest comic
var first=false; //Is first comic
var archive=false; //Is comic page in archive
var comicPage=false; //Is comic page
var nav=document.getElementById("navbar"); //Get Navbar element. If found:
if(nav)
{
var imgLinks=nav.getElementsByTagName("img"); //Get all image elements in navbar
if(imgLinks.length>0) //If at least one found
{
comicPage=true; //Then is comic page
if(imgLinks.length>1)
archive=true; //If more than one found then is archive comic page
else //Else if only one found:
{
if(imgLinks[0].src.indexOf("yesterday_curl")!=-1) //If image is yesterday_curl.jpg
latest=true; //Then is latest comic
else if(imgLinks[0].src.indexOf("left_curl.jpg")!=-1) //Else if image is left_curl.jpg
{
latest=true; //Then is then is archive page and latest comic
archive=true;
}
else
{
first=true; //Else is first comic and archive page
archive=true;
}
}
if(imgLinks.length>1) //If more than one image found in nav
imgLinks[imgLinks.length-1].setAttribute("align","left"); //Add align=left to last image in nav
else if(imgLinks.length==1) //Else if only one found
{
//Create spacer image to replace missing next/prev comic link image
spacer=document.createElement("img"); //Create img element
//Set src to be data uri - 1px x 1px png image, same colour as nav bar
spacer.src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAIAAACQd1PeAAAADElEQVR4nGP4P0MKAARLAbLrRbejAAAAAElFTkSuQmCC";
spacer.style.height="35px"; //Set height and width to match next/prev comic link images
spacer.style.width="259px";
if(latest) //If comic is latest
{
imgLinks[imgLinks.length-1].setAttribute("align","left"); //Add align=left to last image in nav
spacer.setAttribute("align","right"); //Set spacer iamge to align right
}
else
spacer.setAttribute("align","left"); //Else set spacer to align left
nav.appendChild(spacer); //Append spacer image to nav
}
nav.appendChild(aSet); //Append Set Placemark link to nav
nav.appendChild(divider); //Append divider br element to nav
nav.appendChild(aGoto); //Append Goto Placemark link to nav
nav.style.textAlign="center" //Set nav text align to centre
nav.style.height="35px" //Set nav height to match next/prev comic link images
if(markedURL) //If stored placemark was found
{
aGoto=document.getElementById("gotoLink") //Get goto placemark link
aGoto.style.display="inline;"; //Unhide goto placemark link
aGoto.addEventListener("click",gotoMark,false); //Add onclick event listener to goto link
gotoListener=true; //Set goto mark link event listener flag
}
if(comicPage) //If current page is a comic page
{
aSet=document.getElementById("storeLink") //Get placemark link
aSet.style.display="inline;"; //Unhide goto placemark link
aSet.addEventListener("click",setMark,false); //Add onclick event listener to set mark link
setListener=true; //Set placemark link event listener flag
}
}
}
//------------------------------------------------------
//setMark()
//Called by placemark link onclick, marks current comic
//------------------------------------------------------
function setMark()
{
if((latest)&&(!archive))
{
markedURL=imgLinks[0].parentNode.href
trueURL=false
GM_setValue("markedURL",markedURL); //Store values in script preferences
GM_setValue("trueURL",trueURL);
aGoto.style.display="inline;";
getURL(0)
}
else
{
markedURL=document.location.href;
trueURL=true;
GM_setValue("markedURL",markedURL); //Store values in script preferences
GM_setValue("trueURL",trueURL);
aGoto.style.display="inline;";
}
}
//------------------------------------------------------
//gotoMark()
//Called by goto mark link onclick, goes to marked comic
//------------------------------------------------------
function gotoMark()
{
if(trueURL) //If stored URL is true url
document.location=markedURL; //Go to stored url
else
getURL(1) //Else (url is previous comic) load previous comic, extract next comic url, and go to it
}
//------------------------------------------------------
//getURL(load)
//Called by setMark() and gotoMark(), retrieves page of
//stored url using GM_xmlhttpRequest() and extracts next
//comic url, then either stores it as true url (load=0)
//or goes to url (load=1)
//------------------------------------------------------
function getURL(load)
{
var link
GM_xmlhttpRequest({ //HTTP request the stored url
method: 'GET',
url: markedURL,
onload: function(responseDetails)
{
var text=responseDetails.responseText; //Get source of stored url as text
var navbarId=text.indexOf("id=\"navbar\""); //Search text for forward button id
var i1=text.indexOf("<a ",navbarId); //Get index of first anchor element after navbar
var i2=text.indexOf(">",i1); //Get index of first > after beginning of anchor element
text=text.substring(i1,i2); //Store substring, is raw text of desired html element
i1=text.indexOf("href=\""); //Locate first href=" in string
i1=text.indexOf("\"",i1)+1; //Get index of " plus 1 (index of start of url)
i2=text.indexOf("\"",i1); //Get index of next " (end of url)
var link=text.substring(i1,i2); //Go to to recovered url (url of forward button)
if(load) //If load is set
document.location=link; //Load retrieved link
else //Else store retrieved link:
{
markedURL=link; //Set markedURL to retrieved link
trueURL=true; //Set trueURL to true
GM_setValue("markedURL",markedURL); //Store values in script preferences
GM_setValue("trueURL",trueURL);
}
}
});
}
//------------------------------------------------------
//cleanupListeners()
//Called by document unload, removes event listeners
//------------------------------------------------------
function cleanupListeners()
{
if(gotoListener) //If goto link was added to page, remove listener
document.getElementById(gotoLink).removeEventListener("click",gotoMark,false);
if(setListener) //If set link was added to page, remove listener
aSet.removeEventListener("click",setMark,false);
//Remove document unload listener
document.removeEventListener("unload",cleanupListeners,false);
}
}
)();
