By Mike Travers
—
Last update
Dec 26, 2006
—
Installed
161 times.
// Version 0.1
//
// ==UserScript==
// @name LinkBack
// @namespace http://hyperphor.com
// @description For any page, show some of the pages that point to it.
// @include *
// @exclude *.google.*
// @exclude *.gmail.*
// @exclude *.yahoo.*
// ==/UserScript==
// Based on Peninsula Library lookup
// Version 0.1 - First release
function debug(aMsg) {
// uncomment for debugging messages
// setTimeout(function() { throw new Error("[debug] " + aMsg); }, 0);
}
function getElementText(node) {
return node.firstChild.nodeValue;
}
(function() {
var Drag = function(){ this.init.apply( this, arguments ); };
Drag.fixE = function( e ) {
if( typeof e == 'undefined' ) e = window.event;
if( typeof e.layerX == 'undefined' ) e.layerX = e.offsetX;
if( typeof e.layerY == 'undefined' ) e.layerY = e.offsetY;
return e;
};
Drag.prototype.init = function( handle, dragdiv ) {
this.div = dragdiv || handle;
this.handle = handle;
if( isNaN(parseInt(this.div.style.left)) ) this.div.style.left = '0px';
if( isNaN(parseInt(this.div.style.top)) ) this.div.style.top = '0px';
this.onDragStart = function(){};
this.onDragEnd = function(){};
this.onDrag = function(){};
this.onClick = function(){};
this.mouseDown = addEventHandler(this.handle, 'mousedown', this.start, this);
};
Drag.prototype.start = function(e) {
e = Drag.fixE(e);
this.started = new Date();
var y = this.startY = parseInt(this.div.style.top);
var x = this.startX = parseInt(this.div.style.left);
this.onDragStart(x, y);
this.lastMouseX = e.clientX;
this.lastMouseY = e.clientY;
this.documentMove = addEventHandler(document, 'mousemove', this.drag, this);
this.documentStop = addEventHandler(document, 'mouseup', this.end, this);
if (e.preventDefault) e.preventDefault();
return false;
};
Drag.prototype.drag = function( e ) {
e = Drag.fixE(e);
var ey = e.clientY;
var ex = e.clientX;
var y = parseInt(this.div.style.top);
var x = parseInt(this.div.style.left);
var nx = ex + x - this.lastMouseX;
var ny = ey + y - this.lastMouseY;
this.div.style.left = nx + 'px';
this.div.style.top = ny + 'px';
this.lastMouseX = ex;
this.lastMouseY = ey;
this.onDrag(nx, ny);
if (e.preventDefault) {
e.preventDefault();
}
return false;
};
Drag.prototype.end = function() {
removeEventHandler( document, 'mousemove', this.documentMove );
removeEventHandler( document, 'mouseup', this.documentStop );
var time = (new Date()) - this.started;
var x = parseInt(this.div.style.left), dx = x - this.startX;
var y = parseInt(this.div.style.top), dy = y - this.startY;
this.onDragEnd( x, y, dx, dy, time );
if( (dx*dx + dy*dy) < (4*4) && time < 1e3 ) {
this.onClick( x, y, dx, dy, time );
}
};
function removeEventHandler( target, eventName, eventHandler ) {
if( target.addEventListener ) {
target.removeEventListener( eventName, eventHandler, true );
} else if( target.attachEvent ) {
target.detachEvent( 'on' + eventName, eventHandler );
}
}
function addEventHandler( target, eventName, eventHandler, scope ) {
var f = scope ? function(){ eventHandler.apply( scope, arguments ); } : eventHandler;
if( target.addEventListener ) {
target.addEventListener( eventName, f, true );
} else if( target.attachEvent ) {
target.attachEvent( 'on' + eventName, f );
}
return f;
}
var appID = 'LinkBack'; // assigned through Yahoo
var nResults = 10;
function makeQueryUrl(pageUrl) {
return 'http://search.yahooapis.com/WebSearchService/V1/webSearch?appid='
+ appID
+ "&query="
+ encodeURI("link:")
+ encodeURI(pageUrl)
+ "&results=" + nResults;
}
function makeMoreUrl(pageUrl) {
return 'http://search.yahoo.com/search?p='
+ encodeURI("link:")
+ encodeURI(pageUrl);
}
var linkWindow = null;
makeWindow = function() {
if (linkWindow == null) {
var body = document.getElementsByTagName('body')[0];
var div = document.createElement('div');
div.setAttribute('id', 'LinkBack');
div.setAttribute('style','position:absolute;top:0px;left:0px;z-index:1999;background-color:#ffff00;opacity:0.85;border:1px solid #000000;color:#000000;padding: 0px;');
var title = document.createElement('div');
var label = document.createTextNode( 'Linkback' );
title.appendChild(label);
title.setAttribute('style','background:#0000FF;cursor:move;color:white;');
div.appendChild(title);
var divStyled=document.createElement('div');
divStyled.setAttribute('style','border:1px solid #e4e4e4;padding:1em; background:#efefff;text-align: left');
div.appendChild(divStyled);
body.appendChild(div);
title.drag = new Drag(title, div);
linkWindow = divStyled;
}
return linkWindow;
}
// doesn't work. (and unused)
relocate = function() {
// window.left = document.width - window.width;
// window.pixelLeft = document.body.clientWidth - window.offsetWidth;
debug(window.innerWidth);
debug(linkWindow.style.width);
debug(linkWindow.style.left);
debug(linkWindow.left);
debug(linkWindow.style.pixelLeft);
// linkWindow.style.left = window.innerWidth - linkWindow.style.width;
linkWindow.visibility = 'hide';
linkWindow.style.left = (window.innerWidth - 250) + 'px';
linkWindow.visibility = 'show';
}
insertLink = function(url, hrefTitle, aLabel ) {
var container = makeWindow();
var link = document.createElement('a');
link.setAttribute ( 'title', hrefTitle );
link.setAttribute('href', url);
link.setAttribute('style','text-align: left;font: 8pt sans-serif;color: black');
var label = document.createTextNode( hrefTitle );
link.appendChild(label);
container.appendChild(link);
container.appendChild(document.createElement('br'));
}
doLookup = function (pageUrl) {
debug('query url: ' + makeQueryUrl(pageUrl));
GM_xmlhttpRequest ({
method : 'GET',
url : makeQueryUrl(pageUrl),
onload : function(response) {
var parser = new DOMParser();
var responseXML = parser.parseFromString(response.responseText, "text/xml");
var root = responseXML.getElementsByTagName("ResultSet");
var results = root[0].getElementsByTagName("Result");
for (var i=0; i<results.length; i++) {
var result = results[i];
var url = getElementText(result.getElementsByTagName("Url")[0]);
var title = getElementText(result.getElementsByTagName("Title")[0]);
var displayUrl = getElementText(result.getElementsByTagName("DisplayUrl")[0]);
insertLink(url, title, displayUrl);
}
if (results.length > 0) {
insertLink(makeMoreUrl(pageUrl), "More...", "More...");
// relocate();
}
}
});
}
doLookup(document.location.href);
}
)();
