goToUpperDirectory.uc.js

// ==UserScript==
// @name           goToUpperDirectory.uc.js
// @namespace      http://d.hatena.ne.jp/Griever/
// @include        main
// @version        0.0.2
// ==/UserScript==

var upperDirectory = {
	about : ['about:', 'about:blank', 'about:buildconfig', 'about:cache', 'about:cache?device=memory',
		'about:cache?device=disk', 'about:config', 'about:crashes', 'about:credits', 'about:mozilla',
		'about:licence', 'about:logo', 'about:plugins', 'about:robots'],
	init : function(){
		this.identityBox = document.getElementById('identity-box');
		this.popup = document.createElement('menupopup');
		this.popup.id = 'upperDirectoryPopup';
		this.popup.setAttribute('onpopupshowing', "upperDirectory.createMenuitem();");
		this.popup.setAttribute('onpopuphidden', "var c; while(c = this.firstChild){ this.removeChild(c) }");
		document.getElementById('mainPopupSet').appendChild(this.popup);

		this.identityBox.addEventListener('click', this, false);
	},
	uninit: function(){
		this.identityBox.removeEventListener('click', this, false);
	},
	handleEvent : function(event){
		if (event.button == 2){
			event.preventDefault();
			event.stopPropagation();
			this.popup.openPopup(this.identityBox, 'after_start');
		}
	},
	createMenuitem : function(urls){
		if (!urls)
			urls = this.createURL();

		var s = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
		var l = s.length;
		urls.forEach(function(url, index){
			var menuitem = document.createElement('menuitem');
			menuitem.setAttribute("label", url);
			menuitem.setAttribute("accesskey", s[index % l]);
			menuitem.setAttribute("acceltext", s[index % l]);
			menuitem.setAttribute("oncommand", "openUILink(this.label, event)");
			menuitem.setAttribute("onclick", "checkForMiddleClick(this, event)");
			this.popup.appendChild(menuitem);
		},this);
	},
	createURL : function(){
		var prePath = gBrowser.currentURI.prePath;
		if (prePath == 'about:')
			return this.about;
		var path = gBrowser.currentURI.path;
		var h = [];
		var p = path.indexOf('#');
		if (p > 0){
			path = path.substr(0, p);
			h.push(prePath + path);
		}
		while(path){
			p = path.substr(-1) == '/'? path.lastIndexOf('/', path.length-2) : path.lastIndexOf('/');
			path = path.substr(0, p);
			h.push(prePath + path + '/');
		}
		return h;
	}
}
upperDirectory.init();
window.addEventListener('unload', function(){
	upperDirectory.uninit();
}, false);