From c7dcaec9408bfcba7b07423921fc36b022005dbc Mon Sep 17 00:00:00 2001
From: PizZaKatZe <pizzakatze@chaos-siegen.de>
Date: Wed, 3 Feb 2021 23:11:19 +0100
Subject: [PATCH] Make login text input field touch capable (thx @TabscoEye)

---
 front/src/Phaser/Components/TextInput.ts | 71 +++++++++++++++++-------
 1 file changed, 51 insertions(+), 20 deletions(-)

diff --git a/front/src/Phaser/Components/TextInput.ts b/front/src/Phaser/Components/TextInput.ts
index 1e01029b..a8ea772f 100644
--- a/front/src/Phaser/Components/TextInput.ts
+++ b/front/src/Phaser/Components/TextInput.ts
@@ -1,46 +1,68 @@
 
+const IGNORED_KEYS = new Set([
+    'Esc',
+    'Escape',
+    'Alt',
+    'Meta',
+    'Control',
+    'Ctrl',
+    'Space',
+    'Backspace'
+])
+
 export class TextInput extends Phaser.GameObjects.BitmapText {
     private minUnderLineLength = 4;
     private underLine: Phaser.GameObjects.Text;
+    private domInput = document.createElement('input');
 
-    constructor(scene: Phaser.Scene, x: number, y: number, maxLength: number, text: string, onChange: (text: string) => void) {
+    constructor(scene: Phaser.Scene, x: number, y: number, maxLength: number, text: string,
+                onChange: (text: string) => void) {
         super(scene, x, y, 'main_font', text, 32);
-        this.setOrigin(0.5).setCenterAlign()
+        this.setOrigin(0.5).setCenterAlign();
         this.scene.add.existing(this);
 
-        this.underLine = this.scene.add.text(x, y+1, this.getUnderLineBody(text.length), { fontFamily: 'Arial', fontSize: "32px", color: '#ffffff'})
-        this.underLine.setOrigin(0.5)
+        const style = {fontFamily: 'Arial', fontSize: "32px", color: '#ffffff'};
+        this.underLine = this.scene.add.text(x, y+1, this.getUnderLineBody(text.length), style);
+        this.underLine.setOrigin(0.5);
 
+        this.domInput.maxLength = maxLength;
+        this.domInput.style.opacity = "0";
+        if (text) {
+            this.domInput.value = text;
+        }
 
-        this.scene.input.keyboard.on('keydown', (event: KeyboardEvent) => {
-            if (event.keyCode === 8 && this.text.length > 0) {
-                this.deleteLetter();
-            } else if ((event.keyCode === 32 || (event.keyCode >= 48 && event.keyCode <= 90)) && this.text.length < maxLength) {
-                this.addLetter(event.key);
+        this.domInput.addEventListener('keydown', event => {
+            if (IGNORED_KEYS.has(event.key)) {
+                return;
             }
+
+            if (!/[a-zA-Z0-9:.!&?()+-]/.exec(event.key)) {
+                event.preventDefault();
+            }
+        });
+
+        this.domInput.addEventListener('input', (event) => {
+            if (event.defaultPrevented) {
+                return;
+            }
+            this.text = this.domInput.value;
             this.underLine.text = this.getUnderLineBody(this.text.length);
             onChange(this.text);
         });
+
+        document.body.append(this.domInput);
+        this.focus();
     }
-    
+
     private getUnderLineBody(textLength:number): string {
         if (textLength < this.minUnderLineLength) textLength = this.minUnderLineLength;
         let text = '_______';
         for (let i = this.minUnderLineLength; i < textLength; i++) {
-            text += '__'
+            text += '__';
         }
         return text;
     }
 
-    private deleteLetter() {
-        this.text = this.text.substr(0, this.text.length - 1);
-    }
-
-
-    private addLetter(letter: string) {
-        this.text += letter;
-    }
-
     getText(): string {
         return this.text;
     }
@@ -56,4 +78,13 @@ export class TextInput extends Phaser.GameObjects.BitmapText {
         this.underLine.y = y+1;
         return this;
     }
+
+    focus() {
+        this.domInput.focus();
+    }
+
+    destroy(): void {
+        super.destroy();
+        this.domInput.remove();
+    }
 }