new "menus" selector for block attributes

HISTORY.md

@@ -16,7 +16,7 @@
     * new MOUSE POSITION primitive reporter in the SENSING category
     * new "position" choice in OF reporter's attribute dropdown, reports a list of XY coordinates
     * new "categories" choice in MY reporter's dropdown, reports an ordered list of all category names whose indices match the "category" reported elsewhere
-    * new "label", "type", "scope" and "slots" choices in the OF BLOCK block-attribute reporter's dropdown
+    * new "label", "type", "scope", "slots" and "menus" choices in the OF BLOCK block-attribute reporter's dropdown
     * new "set attribute of block" primitive, experimental
     * new "define block" primitive, experimental
     * new "this script" primitive, experimental
@@ -30,6 +30,7 @@
     * imported single scripts are now placed into the hand, for the user to position them in the scripting area 
     * moved "append", "reshape", "combinations" blocks down one group in the palette
     * moved "current date" block up to "timer" group in the palette
+    * moved "attribute of block" block from the sensing category to control
     * include currently dragged sprites in the MY OTHER SPRITES/CLONES lists
     * library import dialog makeover for custom categories and hidden blocks, thanks, Michael!
     * when querying a custom reporter's "definition" property only report its reporter without the REPORT block (if applicable)
@@ -52,6 +53,9 @@
 * **Translation Updates:**
     * German
 
+### 2022-06-28
+* blocks, byob, threads: new "menus" selector for block attributes
+
 ### 2022-06-27
 * threads: trim block label before identifying existing definition in DEFINE
 

snap.html

@@ -16,14 +16,14 @@
         <script src="src/morphic.js?version=2022-04-26"></script>
         <script src="src/symbols.js?version=2021-03-03"></script>
         <script src="src/widgets.js?version=2021-17-09"></script>
-        <script src="src/blocks.js?version=2022-06-22"></script>
-        <script src="src/threads.js?version=2022-06-27"></script>
+        <script src="src/blocks.js?version=2022-06-28"></script>
+        <script src="src/threads.js?version=2022-06-28"></script>
         <script src="src/objects.js?version=2022-06-23"></script>
         <script src="src/scenes.js?version=2022-03-03"></script>
         <script src="src/gui.js?version=2022-05-19"></script>
         <script src="src/paint.js?version=2021-07-05"></script>
         <script src="src/lists.js?version=2022-05-19"></script>
-        <script src="src/byob.js?version=2022-05-25"></script>
+        <script src="src/byob.js?version=2022-06-28"></script>
         <script src="src/tables.js?version=2022-01-28"></script>
         <script src="src/sketch.js?version=2021-11-03"></script>
         <script src="src/video.js?version=2019-06-27"></script>

src/blocks.js

@@ -161,7 +161,7 @@ CostumeIconMorph, SoundIconMorph, SVG_Costume, embedMetadataPNG*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.blocks = '2022-June-22';
+modules.blocks = '2022-June-28';
 
 var SyntaxElementMorph;
 var BlockMorph;
@@ -808,7 +808,8 @@ SyntaxElementMorph.prototype.labelParts = {
             'global?': ['global?'],
             'type': ['type'],
             'scope': ['scope'],
-            'slots': ['slots']
+            'slots': ['slots'],
+            'menus' : ['menus']
         }
     },
     '%byob': {
@@ -820,7 +821,8 @@ SyntaxElementMorph.prototype.labelParts = {
             'category': ['category'],
             'type': ['type'],
             'scope': ['scope'],
-            'slots': ['slots']
+            'slots': ['slots'],
+            'menus' : ['menus']
         }
     },
 

src/byob.js

@@ -111,7 +111,7 @@ ArgLabelMorph*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.byob = '2022-May-25';
+modules.byob = '2022-June-28';
 
 // Declarations
 
@@ -374,6 +374,52 @@ CustomBlockDefinition.prototype.parseChoices = function (string) {
     return dict;
 };
 
+CustomBlockDefinition.prototype.encodeChoices = function (list) {
+    // answer a string representing a parseable dropdown menu for an input slot
+    var encode = (dta) => dta instanceof List ?
+            encodeList(dta) : dta.toString(),
+        encodeList = (dta) => dta.length() === 2 ? encodePair(dta)
+            : dta.itemsArray().reduce(
+                (a, b) => encode(a) + '\n' + encode(b)),
+        encodePair = (dta) => encode(dta.at(1)) + '=' +
+            (dta.at(2) instanceof List ?
+                encodeSub(dta.at(2))
+                : encode(dta.at(2))),
+        encodeSub = (dta) => '{\n' + encode(dta) + '\n}';
+
+    if (list.isEmpty()) {
+        return '';
+    }
+    return list.itemsArray().reduce((a, b) => encode(a) + '\n' + encode(b));
+};
+
+CustomBlockDefinition.prototype.decodeChoices = function (choices) {
+    // answer a (nested) List representing the input slot dropdown menu
+    var list = new List(),
+        key;
+    for (key in choices) {
+        if (Object.prototype.hasOwnProperty.call(choices, key)) {
+            if (key[0] === '~') {
+                list.add(key[0]);
+            } else if (choices[key] instanceof Object &&
+                    !(choices[key] instanceof Array) &&
+                    (typeof choices[key] !== 'function')) {
+                list.add(new List([key, this.decodeChoices(choices[key])]));
+            } else if (choices[key] instanceof Array &&
+                    choices[key][0] instanceof Object &&
+                    typeof choices[key][0] !== 'function') {
+
+                list.add(new List([key, this.decodeChoices(choices[key][0])]));
+            } else {
+                list.add(choices[key] === key ? key
+                    : new List([key, choices[key]])
+                );
+            }
+        }
+    }
+    return list;
+};
+
 CustomBlockDefinition.prototype.menuSearchWords = function () {
     // return a single string containing words that can be searched for
     // inside my dropdown menus

src/threads.js

@@ -65,7 +65,7 @@ StagePickerMorph, CustomBlockDefinition*/
 
 /*jshint esversion: 11, bitwise: false, evil: true*/
 
-modules.threads = '2022-June-27';
+modules.threads = '2022-June-28';
 
 var ThreadManager;
 var Process;
@@ -5612,7 +5612,7 @@ Process.prototype.reportBlockAttribute = function (attribute, block) {
 
 Process.prototype.reportBasicBlockAttribute = function (attribute, block) {
     var choice = this.inputOption(attribute),
-        expr, body, slots;
+        expr, body, slots, def;
     this.assertType(block, ['command', 'reporter', 'predicate']);
     expr = block.expression;
     switch (choice) {
@@ -5663,6 +5663,17 @@ Process.prototype.reportBasicBlockAttribute = function (attribute, block) {
                     each.getSlotSpec() : each.getSpec()
             )
         ).map(spec => this.slotType(spec));
+    case 'menus':
+        slots = new List();
+        if (expr.isCustomBlock) {
+            def = (expr.isGlobal ?
+                expr.definition
+                : this.blockReceiver().getMethod(expr.semanticSpec));
+            def.declarations.forEach(value => slots.add(
+                def.decodeChoices(def.parseChoices(value[2]))
+            ));
+        }
+        return slots;
     }
     return '';
 };
@@ -5944,6 +5955,23 @@ Process.prototype.doSetBlockAttribute = function (attribute, block, val) {
             }
         });
         break;
+    case 'menus':
+        this.assertType(val, ['list', 'text', 'number']);
+        if (!(val instanceof List)) {
+            val = new List([val.toString()]);
+        }
+        def.inputNames().forEach((name, idx) => {
+            var info = def.declarations.get(name),
+                options = val.at(idx + 1);
+            if (options !== '') {
+                if (!(options instanceof List)) {
+                    options = new List([options]);
+                }
+                info[2] = def.encodeChoices(options); // +++ || info[2];
+                def.declarations.set(name, info);
+            }
+        });
+        break;
     default:
         return;
     }