From f0fb3f66d095b3fb47f1392318f1879c1e805f63 Mon Sep 17 00:00:00 2001
From: Cosmo <daixianceng@gmail.com>
Date: Sat, 4 Nov 2017 13:10:11 +0800
Subject: [PATCH] Supports register extensions

---
 src/ECharts.php      | 5 +++++
 src/EChartsAsset.php | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/src/ECharts.php b/src/ECharts.php
index e083433..2d7ba14 100644
--- a/src/ECharts.php
+++ b/src/ECharts.php
@@ -50,6 +50,11 @@ class ECharts extends Widget
      */
     public static $dist = self::DIST_COMMON;
 
+    /**
+     * @var array the extensions of echarts.
+     */
+    public static $extensions = [];
+
     /**
      * @var boolean whether resize the chart when the container size is changed.
      */
diff --git a/src/EChartsAsset.php b/src/EChartsAsset.php
index 9b167c6..d04805d 100644
--- a/src/EChartsAsset.php
+++ b/src/EChartsAsset.php
@@ -40,6 +40,11 @@ public function init()
                 default:
                     throw new InvalidConfigException('The "dist" is not valid.');
             }
+
+            // Registers echarts extensions
+            foreach (ECharts::$extensions as $extension) {
+                $this->js[] = YII_DEBUG ? "extension/{$extension}.js" : "extension/{$extension}.min.js";
+            }
         }
 
         parent::init();