add MessageType

Author: dl-nice

src/model/transaction/EncryptedMessage.ts

@@ -17,6 +17,7 @@
 import {crypto} from 'nem2-library';
 import {PublicAccount} from '../account/PublicAccount';
 import {Message} from './Message';
+import {MessageType} from './MessageType';
 import {PlainMessage} from './PlainMessage';
 
 /**
@@ -28,7 +29,7 @@ export class EncryptedMessage extends Message {
 
     constructor(payload: string,
                 recipientPublicAccount?: PublicAccount){
-        super(1,payload);
+        super(MessageType.EncryptedMessage,payload);
         this.recipientPublicAccount = recipientPublicAccount;
     }
 

src/model/transaction/MessageType.ts

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2018 NEM
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * The supply type. Supported supply types are:
+ * 0: Increase in supply.
+ * 1: Decrease in supply.
+ */
+export enum MessageType {
+    PlainMessage = 0,
+    EncryptedMessage = 1,
+}

src/model/transaction/PlainMessage.ts

@@ -15,6 +15,7 @@
  */
 
 import {Message} from './Message';
+import {MessageType} from './MessageType';
 
 /**
  * The plain message model defines a plain string. When sending it to the network we transform the payload to hex-string.
@@ -40,7 +41,7 @@ export class PlainMessage extends Message {
      * @param payload
      */
     constructor(payload: string) {
-        super(0, payload);
+        super(MessageType.PlainMessage, payload);
     }
 
 }