Source for "Flickr Auto Tag"

// Flickr Auto Tag
// v0.2
// 2007-07-05
// Copyright (c) 2007, Pierre Andrews.
// Released under the GPL license
// http://www.gnu.org/copyleft/gpl.html
//
// ==UserScript==
// @name	Flickr Auto Tag
// @namespace	http://6v8.gamboni.org/Flickr-Auto-Tag.html
// @description	Save and reuse quickly the tags you often use.
// @version        0.2
// @date           2007-05-07
// @creator        Pierre Andrews (mortimer.pa@free.fr)
// @include http://*flickr.com/photos/*
// @exclude http://*flickr.com/photos/organize*
// ==/UserScript==

(function () {

	var win = (unsafeWindow || window.wrappedJSObject || window);

	//update information
	var SCRIPT = {
		name: "Flickr Auto Tag",
		namespace: "http://6v8.gamboni.org/Flickr-Auto-Tag.html",
		description: "Save and reuse quickly the tags you often use.",
		source: "http://6v8.gamboni.org/Flickr-Auto-Tag.html",			// script homepage/description URL
		identifier: "http://6v8.gamboni.org/IMG/js/flickrautotag.user.js",
		version: "0.2",								// version
		date: (new Date(2007, 5, 07))		// update date
		.valueOf()
	};

	//======================================================================
	//to do the closure and get the right this.
	//adapted from http://persistent.info/greasemonkey/gmail.user.js

	function getObjectMethodClosure0(object, method,args) {
		return function() {
			return object[method](args); 
		}
	}

	/*function M8_log() {
		if(unsafeWindow.console)
			unsafeWindow.console.log(arguments);
		else
			GM_log(arguments);
			}*/

	win.FlickrAutoTag = function() {
		this.init();
	};

	win.FlickrAutoTag.prototype = {
		init: function() {	
			var existing_tags;
			
			var matches = /\/photos\/[^\/]+\/([0-9]+)/.exec(document.location.pathname);
			if(matches) {
				//use the tags flickr already retrieved for use, thanks
				existing_tags = unsafeWindow.global_photos[matches[1]].tags_rawA;
			}
			var tags = GM_getValue('tags');
			if(tags) {
				var tagit = document.getElementById('tagadderlink');
				if(tagit) {
					stags = tags.split('#@#');
					html = '';
					for each(tag in stags) {
						var show = true;
						if(existing_tags) {
							//This will not resist to "
							var split = tag.split(' ');
							var cnt = 0;
							for each(t in split) {
								if(existing_tags.indexOf(t) > 0) cnt++;
							}
							if(cnt == split.length) show = false;
						}
						if(show) {
							tag = tag.replace(/\"/g,'"');
							html += '<option>'+tag+'</option>';
						}
					}
					if(html) {
						var span = tagit.appendChild(document.createElement('span'));
						span.style.display = 'block';
						span.style.fontSize = '80%';
						var select = span.appendChild(document.createElement('select'));
						select.innerHTML = html;
						var button = span.appendChild(document.createElement('button'));
						button.innerHTML = 'add';
						button.className = 'SmallButt';
						button.addEventListener('click',getObjectMethodClosure0(this,'addTags',select),true);
					}
				}
			}

			
			var adder = document.getElementById('tagadderform');
			if(adder) {
				var label = adder.parentNode.insertBefore(document.createElement('label'),adder.nextSibling);
				label.innerHTML = 'save';
				label.style.fontSize = 'small';
				label.style.color = 'grey';
				label.htmlFor = 'savetag';
				var save = adder.parentNode.insertBefore(document.createElement('input'),adder.nextSibling);
				save.type = 'checkbox';
				save.id = 'savetag';
				adder.elements[2].addEventListener('click',function() {
					if(save.checked) {
						if(!tags || (tags.split('#@#').indexOf(adder.elements[1].value) < 0)) {
							if(tags) tags += '#@#'; //this will not resist tags containing #@#
							else tags = '';
							tags += adder.elements[1].value;
							GM_setValue('tags',tags);
						}
					}
				},true);
			}
		},
		
		addTags: function(select) {
			
			var adder = document.getElementById('tagadderform');
			
			var matches = /\/photos\/[^\/]+\/([0-9]+)/.exec(document.location.pathname);
			if(matches) {
				//use flickr function to do the work
				unsafeWindow.tagrs_addTag(matches[1],select.value);
			}
		}
	};


	//======================================================================
		
	//======================================================================
	// launch
	try {
		window.addEventListener("load", function () {
									try {
										
										// update automatically (http://userscripts.org/scripts/show/2296)
										win.UserScriptUpdates.requestAutomaticUpdates(SCRIPT);
									} catch (ex) {} 
									
									var flickrgp = new win.FlickrAutoTag();
		}, false);
		//a menu item to clear the saved tags.
		GM_registerMenuCommand( "FlickrAutoTag: Clear", function() {GM_setValue('tags','');} );
	} catch (ex) {}

})();