Add ArgumentType.VARIABLE and ArgumentType.BROADCAST

src/engine/runtime.js

@@ -123,6 +123,16 @@ const ArgumentTypeMap = (() => {
             fieldName: 'SOUND_MENU'
         }
     };
+    map[ArgumentType.VARIABLE] = {
+        fieldType: 'field_variable',
+        fieldName: 'VARIABLE'
+    };
+    map[ArgumentType.BROADCAST] = {
+        shadow: {
+            type: 'event_broadcast_menu',
+            fieldName: 'BROADCAST_OPTION'
+        }
+    };
     return map;
 })();
 
@@ -1532,6 +1542,21 @@ class Runtime extends EventEmitter {
         };
     }
 
+    /**
+     * Helper for _convertPlaceholdes which handles variable fields which are a specialized case of block "arguments".
+     * @param {object} argInfo Metadata about the inline image as specified by the extension
+     * @return {object} JSON blob for a scratch-blocks variable field.
+     * @private
+     */
+    _constructVariableJson (argInfo, placeholder) {
+        return {
+            type: 'field_variable',
+            name: placeholder,
+            variableTypes: [argInfo.variableType] ?? [''],
+            variable: (argInfo.variableType === 'broadcast_msg') ? 'message1' : null
+        };
+    }
+
     /**
      * Helper for _convertForScratchBlocks which handles linearization of argument placeholders. Called as a callback
      * from string#replace. In addition to the return value the JSON and XML items in the context will be filled.
@@ -1559,6 +1584,8 @@ class Runtime extends EventEmitter {
         // check if this is not one of those cases. E.g. an inline image on a block.
         if (argTypeInfo.fieldType === 'field_image') {
             argJSON = this._constructInlineImageJson(argInfo);
+        } else if (argTypeInfo.fieldType === 'field_variable') {
+            argJSON = this._constructVariableJson(argInfo, placeholder);
         } else {
             // Construct input value
 

src/extension-support/argument-type.js

@@ -51,7 +51,18 @@ const ArgumentType = {
     /**
      * Name of sound in the current target
      */
-    SOUND: 'sound'
+    SOUND: 'sound',
+
+    /**
+     * Name of variable in the current target
+     * (Can be a list of variables, lists, and broadcasts)
+     */
+    VARIABLE: 'variable',
+
+    /**
+     * Name of broadcast in the project
+     */
+    BROADCAST: 'broadcast'
 };
 
 module.exports = ArgumentType;