Update extension skeleton

Closes #743.

stubs/extension/bootstrap.php

@@ -1,10 +1,14 @@
 <?php
 
-// Require the extension's composer autoload file. This will enable all of our
-// classes in the src directory to be autoloaded.
-require __DIR__.'/vendor/autoload.php';
+use Illuminate\Contracts\Events\Dispatcher;
+use {{namespace}}\Listener;
 
-// Return the name of our Extension class. Flarum will register it as a service
-// provider, allowing it to register bindings and execute code when the
-// application boots.
-return '{{namespace}}\Extension';
+// Return a function that registers the extension with Flarum. This is
+// the place to listen to events, register bindings with the container
+// and execute code when the application boots.
+//
+// Any typehinted argument of this function is automatically resolved
+// by the IoC container.
+return function (Dispatcher $events) {
+    $events->subscribe(Listener\AddClientAssets::class);
+};

stubs/extension/locale/en.yml

@@ -1,28 +0,0 @@
-{{name}}:
-
-  ##
-  # UNIQUE KEYS - The following keys are used in only one location each.
-  ##
-
-  # Translations in this namespace are used by the admin interface.
-  admin:
-
-    # These keys are provided as examples. Delete them before using this template!
-    sample_location:
-      sample_text: "Hello, world!"
-
-
-  # Translations in this namespace are used by the forum user interface.
-  forum:
-
-
-  # Translations in this namespace are used by the forum and admin interfaces.
-  lib:
-
-
-  ##
-  # REUSED TRANSLATIONS - These keys should not be used directly in code!
-  ##
-
-  # Translations in this namespace are referenced by two or more unique keys.
-  ref:

stubs/extension/src/Extension.php

@@ -1,12 +0,0 @@
-<?php namespace {{namespace}};
-
-use Flarum\Support\Extension as BaseExtension;
-use Illuminate\Events\Dispatcher;
-
-class Extension extends BaseExtension
-{
-    public function listen(Dispatcher $events)
-    {
-        $events->subscribe('{{namespace}}\Listeners\AddClientAssets');
-    }
-}

stubs/extension/src/Listener/AddClientAssets.php

@@ -0,0 +1,31 @@
+<?php namespace {{namespace}}\Listener;
+
+use Flarum\Event\ConfigureClientView;
+use Illuminate\Contracts\Events\Dispatcher;
+
+class AddClientAssets
+{
+    public function subscribe(Dispatcher $events)
+    {
+        $events->listen(ConfigureClientView::class, [$this, 'addAssets']);
+    }
+
+    public function addAssets(ConfigureClientView $event)
+    {
+        if ($event->isForum()) {
+            $event->addAssets([
+                __DIR__.'/../../js/forum/dist/extension.js',
+                __DIR__.'/../../less/forum/extension.less',
+            ]);
+            $event->addBootstrapper('{{name}}/main');
+        }
+
+        if ($event->isAdmin()) {
+            $event->addAssets([
+                __DIR__.'/../../js/admin/dist/extension.js',
+                __DIR__.'/../../less/admin/extension.less',
+            ]);
+            $event->addBootstrapper('{{name}}/main');
+        }
+    }
+}

stubs/extension/src/Listeners/AddClientAssets.php

@@ -1,44 +0,0 @@
-<?php namespace {{namespace}}\Listeners;
-
-use Flarum\Event\ConfigureLocales;
-use Flarum\Event\ConfigureClientView;
-use Illuminate\Contracts\Events\Dispatcher;
-
-class AddClientAssets
-{
-    public function subscribe(Dispatcher $events)
-    {
-        $events->listen(ConfigureLocales::class, [$this, 'addLocale']);
-        $events->listen(ConfigureClientView::class, [$this, 'addAssets']);
-    }
-
-    public function addLocale(ConfigureLocales $event)
-    {
-        $event->addTranslations('en', __DIR__.'/../../locale/en.yml');
-    }
-
-    public function addAssets(ConfigureClientView $event)
-    {
-        $event->forumAssets([
-            __DIR__.'/../../js/forum/dist/extension.js',
-            __DIR__.'/../../less/forum/extension.less'
-        ]);
-
-        $event->forumBootstrapper('{{name}}/main');
-
-        $event->forumTranslations([
-            // '{{name}}.hello_world'
-        ]);
-
-        $event->adminAssets([
-            __DIR__.'/../../js/admin/dist/extension.js',
-            __DIR__.'/../../less/admin/extension.less'
-        ]);
-
-        $event->adminBootstrapper('{{name}}/main');
-
-        $event->adminTranslations([
-            // '{{name}}.hello_world'
-        ]);
-    }
-}