From 4de2a6636a4de682edc5c3bbd4d1f5e940e879a3 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Fri, 8 Jan 2016 12:18:40 +0100
Subject: InputHandler: prevent default for relavant keys

---
 src/view/InputHandler.ts | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'src/view/InputHandler.ts')

diff --git a/src/view/InputHandler.ts b/src/view/InputHandler.ts
index 86d4ec6..d06bcf8 100644
--- a/src/view/InputHandler.ts
+++ b/src/view/InputHandler.ts
@@ -13,8 +13,13 @@ class InputHandler {
                 this.listeners.forEach(l => l());
         }
 
-        constructor() {
+        constructor(private relevantKeys: {[key: number]: boolean}) {
                 window.addEventListener('keydown', (ev) => {
+                        if (!relevantKeys[ev.keyCode])
+                                return;
+
+                        ev.preventDefault();
+
                         if (!this.keys[ev.keyCode]) {
                                 this.keys[ev.keyCode] = true;
                                 this.callListeners();
@@ -22,6 +27,11 @@ class InputHandler {
                 });
 
                 window.addEventListener('keyup', (ev) => {
+                        if (!relevantKeys[ev.keyCode])
+                                return;
+
+                        ev.preventDefault();
+
                         if (this.keys[ev.keyCode]) {
                                 delete this.keys[ev.keyCode];
                                 this.callListeners();
-- 
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