From 81a0fc83b9575af73feac93507358afc9b25a79f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michal=20Kv=C3=A1=C4=8Dek?= <michal@binarity.cz>
Date: Mon, 15 Feb 2016 12:21:29 +0100
Subject: [PATCH] FEATURE: add widget and widget area preview into Blade
 template

---
 app/Helpers/WidgetAreas.php              | 24 +++++++++++++++
 app/Providers/GlobalViewDataProvider.php | 39 ++++++++++++++++++++++++
 2 files changed, 63 insertions(+)
 create mode 100644 app/Helpers/WidgetAreas.php

diff --git a/app/Helpers/WidgetAreas.php b/app/Helpers/WidgetAreas.php
new file mode 100644
index 00000000..cf52fe70
--- /dev/null
+++ b/app/Helpers/WidgetAreas.php
@@ -0,0 +1,24 @@
+<?php
+namespace App\Helpers;
+
+use App\Models\WidgetArea;
+
+class WidgetAreas
+{
+    public static function render($uniqueCode)
+    {
+        $widgetArea = new WidgetArea();
+
+        $widgets = $widgetArea->getWidgets($uniqueCode)->get();
+
+        $content = '';
+        foreach ($widgets as $widget) {
+            $handler = $widget->widget_type_handler;
+            $presenter = call_user_func([$handler, 'getPresenter']);
+
+            $content .= call_user_func([$presenter, 'render'], json_decode($widget->settings));
+        }
+
+        echo $content;
+    }
+}
\ No newline at end of file
diff --git a/app/Providers/GlobalViewDataProvider.php b/app/Providers/GlobalViewDataProvider.php
index bd3828df..9eb03876 100644
--- a/app/Providers/GlobalViewDataProvider.php
+++ b/app/Providers/GlobalViewDataProvider.php
@@ -2,6 +2,7 @@
 
 namespace App\Providers;
 
+use Illuminate\Support\Facades\Blade;
 use Illuminate\Support\ServiceProvider;
 
 class GlobalViewDataProvider extends ServiceProvider
@@ -14,6 +15,44 @@ class GlobalViewDataProvider extends ServiceProvider
     public function boot()
     {
         view()->share('vendorName', 'ja s.r.o.');
+
+        // register extension for rendering widget areas
+        Blade::extend(function ($view) {
+            $pattern = $this->createPattern('widgetArea');
+
+            return preg_replace($pattern, '<?php \App\Helpers\WidgetAreas::render($2); ?>', $view);
+        });
+
+        // register extension for preview of widget
+        Blade::extend(function ($view) {
+            $pattern = $this->createPattern('widgetPreview');
+            $code = '
+            <?php
+            if ($2 instanceof \App\Models\Widget) {
+                $handler = $2->widget_type_handler;
+                $presenter = call_user_func([$handler, "getPresenter"]);
+
+                echo call_user_func([$presenter, "render"], json_decode($2->settings));
+            }
+            ?>
+        ';
+
+
+            return preg_replace($pattern, $code, $view);
+        });
+
+
+    }
+
+    /**
+     * Creates pattern for matching Blade directives
+     *
+     * @param $function
+     *
+     * @return string
+     */
+    private function createPattern($function){
+        return '/(?<!\w)(\s*)@'.$function.'\(\s*(.*)\)/';
     }
 
     /**