GoogleAutoPager

By Bobo12 — Last update Jun 22, 2006 — Installed 2,561 times.
// ==UserScript==
// @name           GoogleAutoPager
// @namespace      http://ma.la/
// @author         ma.la <timpo@ma.la>
// @include        http://www.google.*/search*
// @description Add autoloading for next page to Google search result. DblClick to enable/disable it. Demo at http://la.ma.la/misc/demo/googleautopager.htm (Working in Trixie and captured by Wink)
// ==/UserScript==

// Released under the GPL license
//  http://www.gnu.org/copyleft/gpl.html

// ver 0.1 @ 2005-06-23
//  実験的に公開
//  experimental release
// ver 0.2 @ 2005-06-23
//  ダブルクリックでスタート、にしてみる。
//  double click to start.

(function(){
	var base = "http://"+location.host+"/search";
	var offset;
	var num;
	var query;
	var insertPoint;
	var Enable = 1;
	var watch_scroll = function(){
		try{
			var sc = document.body.scrollTop;
			var total = (document.body.scrollHeight - document.body.clientHeight);
			var remain = total - sc;
			// window.status = remain;
			if(remain < 500 && Enable == 1){
				do_request();
			}
		}catch(e){
		
		}
		var self = arguments.callee;
		setTimeout(self,100);
	};
	
	var do_request = function(){
		if(this.requested == offset){return}
		this.requested = offset;
		window.status = 'loading ... ';
		GM_xmlhttpRequest(
		{
      method: 'GET',
      url: base+query.replace(/start=\d*/,"start="+offset),
      headers: 
      {
          'User-agent': 'Mozilla/4.0 (compatible) Greasemonkey',
          'Accept': 'application/atom+xml,application/xml,text/xml',
      },
      onload: function(responseDetails) 
      {
  				var v = responseDetails.responseText;
  				var end_flag = 0;
  				var start = v.indexOf("<div><p");
  				var end = v.indexOf("<div id=navbar class=n>");
  				//alert([start,end]);
  				//alert(v.length);
  				if(v.indexOf("nav_next") == -1)
  				{
  					end_flag = 1;
  				}
  				v = v.slice(start,end);
  				var div = document.createElement("div");
  				div.innerHTML = ["<hr>",offset," to ",(offset+num),"","<p class=g>",v].join("");
  				document.body.insertBefore(div,insertPoint);
  				window.status = 'loading ... ' + offset +' - ' + (offset+num) + ' done.';
  				if(!end_flag)
  				{
  					offset += num;
  				}
      }
    });
  }

	var init_autopager = function(){
		var div = document.getElementsByTagName("div");
		var len = div.length;
		for(var i=0;i<len;i++){
			if(div[i].className == "n"){
				insertPoint = div[i];
			}
		}

	// find nav_next.gif 
		var img = document.images;
		var len = img.length;
		var next;
		for(var i=0;i<len;i++){
			if(img[i].src.indexOf("nav_next") != -1){
				next = img[i];
			}
		}
		var href = next.parentNode.href;
		query = href.substr(href.indexOf("?"));
		offset = (query.match(/start=(\d*)/))[1] - 0;
		var tmp = query.match(/num=(\d*)/);
		num = tmp?tmp[1]-0:10;
	};

	// init 
	if(window.location.href.indexOf(base) != -1){
		if(document.body.attachEvent){
			document.body.attachEvent(
				'ondblclick',function(){
					Enable *= -1;
					window.status = (Enable==1)?"Enabled":"Disabled"
				}
			);
		}else{
			document.body.addEventListener(
				'dblclick',function(){
					Enable *= -1;
					window.status = (Enable==1)?"Enabled":"Disabled"
				},true
			);
		}
		init_autopager();watch_scroll()
	}
})();