Combine all nanoui templates into a single resource bundle.

This reduces the number of assets needing to be sent on join by 150ish.
- Nanoui scripts modified to load templates in parallel instead of one at a time.
- Nanoui scripts modified to be willing to load from the resource bundle if available, falling back to ajax-loading the individual templates if absent.

code/modules/client/asset_cache.dm

@@ -308,7 +308,7 @@ You can set verify to TRUE if you want send() to sleep until the client has the
 		"nano/images/modular_computers/",
 		"nano/js/"
 	)
-	var/list/uncommon_dirs = list(
+	var/list/template_dirs = list(
 		"nano/templates/"
 	)
 
@@ -321,18 +321,21 @@ You can set verify to TRUE if you want send() to sleep until the client has the
 				if(fexists(path + filename))
 					common[filename] = fcopy_rsc(path + filename)
 					register_asset(filename, common[filename])
-	for(var/path in uncommon_dirs)
+	// Combine all templates into a single bundle.
+	var/list/template_data = list()
+	for(var/path in template_dirs)
 		var/list/filenames = flist(path)
 		for(var/filename in filenames)
-			if(copytext(filename, length(filename)) != "/") // Ignore directories.
-				if(fexists(path + filename))
-					register_asset(filename, fcopy_rsc(path + filename))
+			if(copytext(filename, length(filename) - 4) == ".tmpl") // Ignore directories.
+				template_data[filename] = file2text(path + filename)
+	var/template_bundle = "function nanouiTemplateBundle(){return [json_encode(template_data)];}"
+	var/fname = "data/nano_templates_bundle.js"
+	fdel(fname)
+	text2file(template_bundle, fname)
+	register_asset("nano_templates_bundle.js", fcopy_rsc(fname))
+	fdel(fname)
 
-/datum/asset/nanoui/send(client, uncommon)
-	if(!islist(uncommon))
-		uncommon = list(uncommon)
-
-	send_asset_list(client, uncommon)
+/datum/asset/nanoui/send(client)
 	send_asset_list(client, common)
 
 

code/modules/nano/nanoui.dm

@@ -104,6 +104,7 @@ nanoui is used to open and update nano browser uis
 /datum/nanoui/proc/add_common_assets()
 	add_script("libraries.min.js") // A JS file comprising of jQuery, doT.js and jQuery Timer libraries (compressed together)
 	add_script("nano_utility.js") // The NanoUtility JS, this is used to store utility functions.
+	add_script("nano_templates_bundle.js") // Contains all templates, generated by asset cache system at server start.
 	add_script("nano_template.js") // The NanoTemplate JS, this is used to render templates.
 	add_script("nano_state_manager.js") // The NanoStateManager JS, it handles updates from the server and passes data to the current state
 	add_script("nano_state.js") // The NanoState JS, this is the base state which all states must inherit from

nano/js/nano_template.js

@@ -2,6 +2,7 @@
 var NanoTemplate = function () {
 
     var _templateData = {};
+    var _templateSources = {};
 
     var _templates = {};
     var _compiledTemplates = {};
@@ -17,57 +18,41 @@ var NanoTemplate = function () {
 			alert('Error: Template data did not load correctly.');
         }
 
-		loadNextTemplate();
-    };
-
-    var loadNextTemplate = function () {
-        // we count the number of templates for this ui so that we know when they've all been rendered
-        var templateCount = Object.size(_templateData);
-
-        if (!templateCount)
-        {
-            $(document).trigger('templatesLoaded');
-            return;
+        if (('nanouiTemplateBundle' in window) && (typeof nanouiTemplateBundle === 'function')) {
+            _templateSources = nanouiTemplateBundle(); // From nanoui_templates.js
         }
-
-        // load markup for each template and register it
-        for (var key in _templateData)
-        {
-            if (!_templateData.hasOwnProperty(key))
-            {
-                continue;
-            }
-
-            $.when($.ajax({
-                    url: _templateData[key],
+        var templateLoadingPromises = $.map(_templateData, function(filename, key) {
+            var fetchSourcePromise;
+            if (_templateSources && _templateSources.hasOwnProperty(filename)) {
+                // Its in the bundle, just do it
+                fetchSourcePromise = $.Deferred().resolve(_templateSources[filename]).promise();
+            } else {
+                // Otherwise fetch from ze network
+                fetchSourcePromise = $.ajax({
+                    url: filename,
                     cache: false,
                     dataType: 'text'
-                }))
-                .done(function(templateMarkup) {
-
-                    templateMarkup += '<div class="clearBoth"></div>';
-
-                    try
-                    {
-                        NanoTemplate.addTemplate(key, templateMarkup);
+                });
             }
-                    catch(error)
-                    {
+
+            return fetchSourcePromise.done(function(templateMarkup) {
+                templateMarkup += '<div class="clearBoth"></div>';
+                try {
+                    NanoTemplate.addTemplate(key, templateMarkup);
+                } catch(error) {
                     alert('ERROR: An error occurred while loading the UI: ' + error.message);
                     return;
                 }
-
-                    delete _templateData[key];
-
-                    loadNextTemplate();
-                })
-                .fail(function () {
+            }).fail(function () {
                 alert('ERROR: Loading template ' + key + '(' + _templateData[key] + ') failed!');
             });
+        });
 
-            return;
-        }
-    }
+        // Wait for all of them to be done and then trigger the event.
+        $.when.apply(this, templateLoadingPromises).done(function() {
+            $(document).trigger('templatesLoaded');
+        });
+    };
 
     var compileTemplates = function () {