added "all" option to the receiver-dropdown of the SEND block

HISTORY.md

@@ -46,6 +46,7 @@
 * threads, objects: make "when I receive 'any message'" hat scripts threadsafe (uninterruptable by other messages)
 * threads: enabled sending atomic lists to other scenes
 * threads: took out broadcasting a 2-item list to mean a message directed to a particular sprite
+* blocks, objects, threads: added "all" option to the receiver-dropdown of the SEND block
 
 ### 2021-10-20
 * blocks: enable sending green-flag events when switching scenes

src/blocks.js

@@ -160,7 +160,7 @@ CustomCommandBlockMorph, ToggleButtonMorph, DialMorph, SnapExtensions*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.blocks = '2021-October-20';
+modules.blocks = '2021-October-21';
 
 var SyntaxElementMorph;
 var BlockMorph;
@@ -515,6 +515,11 @@ SyntaxElementMorph.prototype.labelParts = {
         tags: 'read-only',
         menu: 'locationMenu'
     },
+    '%rcv': {
+        type: 'input',
+        tags: 'read-only',
+        menu: 'receiversMenu'
+    },
     '%spr': {
         type: 'input',
         tags: 'read-only',
@@ -9529,6 +9534,22 @@ InputSlotMorph.prototype.objectsMenu = function (searching, includeMyself) {
     return dict;
 };
 
+InputSlotMorph.prototype.receiversMenu = function (searching) {
+    var rcvr = this.parentThatIsA(BlockMorph).scriptTarget(),
+        stage = rcvr.parentThatIsA(StageMorph),
+        dict = {all: ['all']};
+
+    if (searching) {return dict; }
+    dict['~'] = null;
+    dict[stage.name] = stage.name;
+    stage.children.forEach(morph => {
+        if (morph instanceof SpriteMorph && !morph.isTemporary) {
+            dict[morph.name] = morph.name;
+        }
+    });
+    return dict;
+};
+
 InputSlotMorph.prototype.typesMenu = function () {
     var dict = {
         number : ['number'],

src/objects.js

@@ -770,7 +770,8 @@ SpriteMorph.prototype.initBlocks = function () {
         doSend: {
             type: 'command',
             category: 'control',
-            spec: 'send %msg to %spr'
+            spec: 'send %msg to %rcv',
+            defaults: [null, ['all']]
         },
         doWait: {
             type: 'command',

src/threads.js

@@ -3753,7 +3753,9 @@ Process.prototype.doSend = function (message, target) {
 
     // determine the receivers
     thisObj = this.blockReceiver();
-    if (isSnapObject(target)) {
+    if (target instanceof Array && target[0] === 'all') {
+        rcvrs = stage.children.concat(stage);
+    } else if (isSnapObject(target)) {
         rcvrs = [target];
     } else if (isString(target)) {
         // assume the string to be the name of a sprite or the stage