From 45e543b636969c7949dcf0a3b7d5d413ac4b7c78 Mon Sep 17 00:00:00 2001
From: Jakub Juszczak <netghost03@gmail.com>
Date: Sun, 2 Oct 2016 10:31:14 +0200
Subject: [PATCH] =?UTF-8?q?=E2=9C=A8=20Add=20reactiveData=20mixin?=
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---
 src/mixins/reactiveData.js | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 src/mixins/reactiveData.js

diff --git a/src/mixins/reactiveData.js b/src/mixins/reactiveData.js
new file mode 100644
index 0000000..50d9ec6
--- /dev/null
+++ b/src/mixins/reactiveData.js
@@ -0,0 +1,34 @@
+module.exports = {
+  data () {
+    return {
+      chartData: null
+    }
+  },
+  watch: {
+    'chartData': {
+      handler (newData, oldData) {
+        if (oldData) {
+          let chart = this._chart
+
+          let newDataLabels = newData.datasets.map((dataset) => {
+            return dataset.label
+          })
+
+          let oldDataLabels = oldData.datasets.map((dataset) => {
+            return dataset.label
+          })
+
+          if (JSON.stringify(newDataLabels) === JSON.stringify(oldDataLabels)) {
+            newData.datasets.forEach((dataset, i) => {
+              chart.data.datasets[i].data = dataset.data
+            })
+            chart.data.labels = newData.labels
+            chart.update()
+          } else {
+            this.renderChart(this.chartData, this.options)
+          }
+        }
+      }
+    }
+  }
+}