From 9e4b73eae9adcbad1cef270411b56d0676cf0006 Mon Sep 17 00:00:00 2001
From: Jens Mönig <jens@moenig.org>
Date: Fri, 17 Apr 2015 15:27:29 +0200
Subject: OOP: Prototypal inheritance of sprite-local custom blocks (palette
 only)

---
 objects.js | 46 ++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 44 insertions(+), 2 deletions(-)

(limited to 'objects.js')

diff --git a/objects.js b/objects.js
index 173be51..52292ca 100644
--- a/objects.js
+++ b/objects.js
@@ -125,7 +125,7 @@ PrototypeHatBlockMorph*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.objects = '2015-April-15';
+modules.objects = '2015-April-17';
 
 var SpriteMorph;
 var StageMorph;
@@ -2373,7 +2373,7 @@ SpriteMorph.prototype.freshPalette = function (category) {
 
     // y += unit * 1.6;
     if (this.exemplar) {
-        this.exemplar.customBlocks.forEach(function (definition) {
+        this.inheritedBlocks(true).forEach(function (definition) {
             var block;
             if (definition.category === category ||
                     (category === 'variables'
@@ -4284,6 +4284,48 @@ SpriteMorph.prototype.deletableVariableNames = function () {
     );
 };
 
+// SpriteMorph inheritance - custom blocks
+
+SpriteMorph.prototype.ownBlocks = function () {
+    var dict = {};
+    this.customBlocks.forEach(function (def) {
+        dict[def.blockSpec()] = def;
+    });
+    return dict;
+};
+
+SpriteMorph.prototype.allBlocks = function (valuesOnly) {
+    var dict = {};
+    this.allExemplars().reverse().forEach(function (sprite) {
+        sprite.customBlocks.forEach(function (def) {
+            dict[def.blockSpec()] = def;
+        });
+    });
+    if (valuesOnly) {
+        return Object.keys(dict).map(function (key) {return dict[key]; });
+    }
+    return dict;
+};
+
+SpriteMorph.prototype.inheritedBlocks = function (valuesOnly) {
+    var dict = {},
+        own = Object.keys(this.ownBlocks()),
+        others = this.allExemplars().reverse();
+    others.pop();
+    others.forEach(function (sprite) {
+        sprite.customBlocks.forEach(function (def) {
+            var spec = def.blockSpec();
+            if (!contains(own, spec)) {
+                dict[spec] = def;
+            }
+        });
+    });
+    if (valuesOnly) {
+        return Object.keys(dict).map(function (key) {return dict[key]; });
+    }
+    return dict;
+};
+
 // SpriteMorph highlighting
 
 SpriteMorph.prototype.addHighlight = function (oldHighlight) {
-- 
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