From a0fbb2bd6db8702ad9729823b91176861b2098c9 Mon Sep 17 00:00:00 2001
From: TrueKuehli <rctcoaster2000@hotmail.de>
Date: Wed, 26 Sep 2018 20:30:15 +0200
Subject: Grundimplementierung des Servers und der Webseite

---
 .../NodeJSServer/src/modules/ui/backdrop.js        | 41 ++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 WebInterface/NodeJSServer/src/modules/ui/backdrop.js

(limited to 'WebInterface/NodeJSServer/src/modules/ui/backdrop.js')

diff --git a/WebInterface/NodeJSServer/src/modules/ui/backdrop.js b/WebInterface/NodeJSServer/src/modules/ui/backdrop.js
new file mode 100644
index 0000000..243bbb3
--- /dev/null
+++ b/WebInterface/NodeJSServer/src/modules/ui/backdrop.js
@@ -0,0 +1,41 @@
+// Showing / Hiding the backdrop menu
+
+export default class Backdrop {
+  constructor(backdropMenu, frontLayer, menuButton) {
+    this.backdrop = document.getElementById(backdropMenu);
+    this.frontLayer = document.getElementById(frontLayer);
+    this.menuButton = document.getElementById(menuButton);
+  }
+
+
+  register() {
+    this.registerButtonEvent();
+    this.registerFrontLayerEvent();
+  }
+
+  registerButtonEvent() {
+    this.menuButton.addEventListener('click', () => {
+      // Hide / Unhide Backdrop Menu
+      if (this.backdrop.classList.contains('hidden')) {
+        this.backdrop.classList.remove('hidden');
+      } else {
+        this.backdrop.classList.add('hidden');
+      }
+
+      // Set open state for menu button
+      if (this.menuButton.classList.contains('open')) {
+        this.menuButton.classList.remove('open');
+      } else {
+        this.menuButton.classList.add('open');
+      }
+    });
+  }
+
+  registerFrontLayerEvent() {
+    // Hide menu when interacting with front layer
+    this.frontLayer.addEventListener('click', () => {
+      this.backdrop.classList.add('hidden');
+      this.menuButton.classList.remove('open');
+    });
+  }
+}
-- 
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