/*==================================================
 *  Timeline API
 *
 *  This file will load all the Javascript files
 *  necessary to make the standard timeline work.
 *  It also detects the default locale.
 *
 *  Include this file in your HTML file as follows:
 *
 *    <script src="http://simile.mit.edu/timeline/api/scripts/timeline-api.js" type="text/javascript"></script>
 *
 *==================================================
 */
var js_version="v0811262";

(function() {
    var useLocalResources = true;
    if (document.location.search.length > 0) {
        var params = document.location.search.substr(1).split("&");
        for (var i = 0; i < params.length; i++) {
            if (params[i] == "timeline-use-local-resources") {
                useLocalResources = true;
            }
        }
    };

    var loadMe = function() {
        if ("Timeline" in window) {
            return;
        }
        
        window.Timeline = new Object();
        window.Timeline.DateTime = window.SimileAjax.DateTime; // for backward compatibility
    
        var bundle = true;
        var javascriptFiles = [
            "timeline.js",
            "themes.js",
            "ethers.js",
            "ether-painters.js",
            "labellers.js",
            "sources.js",
            "layouts.js",
            "painters.js",
            "decorators.js"
        ];
        var cssFiles = [
            "timeline.css",
            "ethers.css",
            "events.css"
        ];
        var localizedJavascriptFiles = [
            "labellers.js"
        ];
        var localizedCssFiles = [
        ];
        
        // ISO-639 language codes, ISO-3166 country codes (2 characters)
        var supportedLocales = [
            "cs",       // Czech
            "de",       // German
            "en",       // English
            "es",       // Spanish
            "fr",       // French
            "it",       // Italian
            "ru",       // Russian
            "se",       // Swedish
            "vi",       // Vietnamese
            "zh"        // Chinese
        ];
        
        try {
            var desiredLocales = [ "en" ];
            var defaultServerLocale = "zh";
            
            var parseURLParameters = function(parameters) {
                var params = parameters.split("&");
                for (var p = 0; p < params.length; p++) {
                    var pair = params[p].split("=");
                    if (pair[0] == "locales") {
                        desiredLocales = desiredLocales.concat(pair[1].split(","));
                    } else if (pair[0] == "defaultLocale") {
                        defaultServerLocale = pair[1];
                    } else if (pair[0] == "bundle") {
                        bundle = pair[1] != "false";
                    }
                }
            };
            
            (function() {
                if (typeof Timeline_urlPrefix == "string") {
                    Timeline.urlPrefix = Timeline_urlPrefix;
                    if (typeof Timeline_parameters == "string") {
                        parseURLParameters(Timeline_parameters);
                    }
                } else {
										Timeline.urlPrefix = "/api/"
                }
            })();
            
            var includeJavascriptFiles = function(urlPrefix, filenames) {
                SimileAjax.includeJavascriptFiles(document, urlPrefix, filenames);
            }
            var includeCssFiles = function(urlPrefix, filenames) {
                SimileAjax.includeCssFiles(document, urlPrefix, filenames);
            }
            
            /*
             *  Include non-localized files
             */
            if (bundle) {
                includeJavascriptFiles(Timeline.urlPrefix, [ "timeline-bundle.js" ]);
            } else {
                includeJavascriptFiles(Timeline.urlPrefix + "scripts/", javascriptFiles);
            }
            
            /*
             *  Include localized files*/
  
            var defaultClientLocale = "zh";
            includeJavascriptFiles(Timeline.urlPrefix + "scripts/l10n/" + defaultClientLocale + "/", localizedJavascriptFiles);
           
            Timeline.serverLocale = defaultServerLocale;
            Timeline.clientLocale = defaultClientLocale;
        } catch (e) {
            alert(e);
        }
    };
    
    /*
     *  Load SimileAjax if it's not already loaded
     */
    if (typeof SimileAjax == "undefined") {
        window.SimileAjax_onLoad = loadMe;
        
        var url = useLocalResources ?
            "/api/simile-ajax-api.js?"+js_version :
            "http://static.simile.mit.edu/ajax/api-2.0/simile-ajax-api.js";
        var createScriptElement = function() {
            var script = document.createElement("script");
            script.type = "text/javascript";
            script.language = "JavaScript";
            script.src = url;
            document.getElementsByTagName("head")[0].appendChild(script);
        }
        if (document.body == null) {
            try {
                document.write("<script src='" + url + "' type='text/javascript'></script>");
            } catch (e) {
                createScriptElement();
            }
        } else {
            createScriptElement();
        }
    } else {
        loadMe();
    }
})();