1 files changed, 34 insertions, 3 deletions

diff --git a/src/Utils.ts b/src/Utils.ts
index e2b4309bb..d4b7da52c 100644
--- a/src/Utils.ts
+++ b/src/Utils.ts
@@ -1,17 +1,22 @@
 import v4 = require('uuid/v4');
 import v5 = require("uuid/v5");
+import { Socket } from 'socket.io';
+import { Message, Types } from './server/Message';
 
 export class Utils {
 
     public static GenerateGuid(): string {
-        return v4();
+        return v4()
     }
 
     public static GenerateDeterministicGuid(seed: string): string {
-        return v5(seed, v5.URL);
+        return v5(seed, v5.URL)
     }
 
     public static GetScreenTransform(ele: HTMLElement): { scale: number, translateX: number, translateY: number } {
+        if (!ele) {
+            return { scale: 1, translateX: 1, translateY: 1 }
+        }
         const rect = ele.getBoundingClientRect();
         const scale = ele.offsetWidth == 0 && rect.width == 0 ? 1 : rect.width / ele.offsetWidth;
         const translateX = rect.left;
@@ -20,5 +25,31 @@ export class Utils {
         return { scale, translateX, translateY };
     }
 
-    public static pdf_example = require('../deploy/test.pdf');
+    public static CopyText(text: string) {
+        var textArea = document.createElement("textarea");
+        textArea.value = text;
+        document.body.appendChild(textArea);
+        textArea.focus();
+        textArea.select();
+
+        try { document.execCommand('copy'); } catch (err) { }
+
+        document.body.removeChild(textArea);
+    }
+
+    public static Emit<T>(socket: Socket | SocketIOClient.Socket, message: Message<T>, args: T) {
+        socket.emit(message.Message, args);
+    }
+
+    public static EmitCallback<T>(socket: Socket | SocketIOClient.Socket, message: Message<T>, args: T, fn: (args: any) => any) {
+        socket.emit(message.Message, args, fn);
+    }
+
+    public static AddServerHandler<T>(socket: Socket, message: Message<T>, handler: (args: T) => any) {
+        socket.on(message.Message, handler);
+    }
+
+    public static AddServerHandlerCallback<T>(socket: Socket, message: Message<T>, handler: (args: [T, (res: any) => any]) => any) {
+        socket.on(message.Message, (arg: T, fn: (res: any) => any) => handler([arg, fn]));
+    }
 }
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