[WIP] AssetsListener

doc/book/assets-listener.md

@@ -0,0 +1,38 @@
+# Assets listener
+
+Allow to use assets (css, js etc.) from modules, or other not public folders
+
+Web server has not access to module folder directly, but this is possible through `AssetsListener`.
+`Zend\View\Helper\Assets` helper can build link to module folder (through Router),
+`AssetsListener` can detect this link (through Router too) and route it to module name and asset.
+When `AssetsListener` detected asset link, it caching module asset to public folder and 
+browser can request this asset directly from public folder (it can be disabled).
+Also `AssetsListener` can filter assets content, as sample .less to .css.
+
+## Basic Usage
+
+Configure template resolver
+```php
+// Add temptate resolver for assets in config file
+'assets_manager' => [
+    'template_resolver' => [
+        'prefix_resolver' => [
+            'ModuleName::' => __DIR__ . '\ModuleNameDir\assets'
+        ],
+    ],
+],
+```
+
+Add asset in layout
+```php
+<?php
+// in layout add asset for module:
+$this->assets()->add('ModuleName::foo.css');
+echo $this->assets();
+?>
+```
+
+Layout Output:
+```html
+<link href="/assets-cache/prefix-ModuleTwo/foo.css" type="text/css">
+```

src/Application.php

@@ -63,6 +63,7 @@ class Application implements
      */
     protected $defaultListeners = [
         'RouteListener',
+        'AssetsListener',
         'MiddlewareListener',
         'DispatchListener',
         'HttpMethodListener',