implement emoji handler that replaces text 😂 with text

ui/app/AppLayouts/Chat/ChatColumn/ChatInput.qml

@@ -16,6 +16,8 @@ Rectangle {
 
     visible: chatsModel.activeChannel.chatType !== Constants.chatTypePrivateGroupChat || chatsModel.activeChannel.isMember(profileModel.profile.pubKey)
 
+    property bool emojiEvent: false;
+
     Audio {
         id: sendMessageSound
         source: "../../../../sounds/send_message.wav"
@@ -53,6 +55,62 @@ Rectangle {
         if (event.modifiers === Qt.NoModifier && (event.key === Qt.Key_Enter || event.key === Qt.Key_Return)) {
             sendMsg(event);
         }
+
+        emojiEvent = emojiHandler(emojiEvent, event);
+    }
+
+
+    function emojiHandler(emojiEvent, event) {
+
+        var msg = chatsModel.plainText(Emoji.deparse(txtData.text).trim());
+
+        if (emojiEvent == false && event.key == Qt.Key_Colon) {
+            if (isSpace(msg.charAt(msg.length - 1)) == true) {
+                console.log('emoji event');
+                return true;
+            }
+            return false;
+        } else if (emojiEvent == true && isKeyValid(event.key) == true) {
+            console.log('popup');
+            return true;
+        } else if (emojiEvent == true && event.key == Qt.Key_Colon) {
+            var index = msg.indexOf(':', 0);
+            txtData.remove(index - 1, txtData.length);
+            txtData.insert(txtData.length, " EMOJI");
+
+            if (event) event.accepted = true;
+
+            return false;
+        } else if (emojiEvent == true && isKeyValid(event.key) == false) {
+            console.log('emoji event stopped');
+            return false;
+        }
+
+        return false;
+    }
+
+    function isKeyValid(key) {
+        if (isKeyAlpha(key) == true || isKeyDigit(key) == true || key == Qt.Key_Underscore || key == Qt.Key_Shift)
+            return true;
+        return false;
+    }
+
+    function isSpace(c) {
+        if (c == ' ' || c == '\t' || c == '\n' || c == '\r')
+            return true
+        return false
+    }
+
+    function isKeyAlpha(key) {
+        if (key >= Qt.Key_A && key <= Qt.Key_Z)
+            return true;
+        return false;
+    }
+
+    function isKeyDigit(key) {
+        if (key >= Qt.Key_0 && key <= Qt.Key_9)
+            return true;
+        return false;
     }
 
     FileDialog {