From 87c2503571bd7f5e753bc16a05bd198fc58d7d7c Mon Sep 17 00:00:00 2001
From: Nathan Dinsmore <nathan@users.noreply.github.com>
Date: Wed, 17 Jun 2015 17:11:40 -0400
Subject: Use Object.create(…) instead of new …() for inheritance (faster)
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---
 lists.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'lists.js')

diff --git a/lists.js b/lists.js
index bd856fe..be7f933 100644
--- a/lists.js
+++ b/lists.js
@@ -363,7 +363,7 @@ List.prototype.equalTo = function (other) {
 
 // ListWatcherMorph inherits from BoxMorph:
 
-ListWatcherMorph.prototype = new BoxMorph();
+ListWatcherMorph.prototype = Object.create(BoxMorph.prototype);
 ListWatcherMorph.prototype.constructor = ListWatcherMorph;
 ListWatcherMorph.uber = BoxMorph.prototype;
 
-- 
cgit v1.3.1


From 995e782147c202a8afa64cabe204849b955f153b Mon Sep 17 00:00:00 2001
From: Nathan Dinsmore <nathan@users.noreply.github.com>
Date: Thu, 18 Jun 2015 04:29:26 -0400
Subject: Fix ListWatcherMorph initialization

---
 lists.js | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

(limited to 'lists.js')

diff --git a/lists.js b/lists.js
index be7f933..769b8b3 100644
--- a/lists.js
+++ b/lists.js
@@ -388,6 +388,13 @@ ListWatcherMorph.prototype.init = function (list, parentCell) {
     this.lastCell = null;
     this.parentCell = parentCell || null; // for circularity detection
 
+    ListWatcherMorph.uber.init.call(
+        this,
+        SyntaxElementMorph.prototype.rounding,
+        1.000001, // shadow bug in Chrome,
+        new Color(120, 120, 120)
+    );
+
     // elements declarations
     this.label = new StringMorph(
         localize('length: ') + this.list.length(),
@@ -436,13 +443,6 @@ ListWatcherMorph.prototype.init = function (list, parentCell) {
     this.plusButton.drawNew();
     this.plusButton.fixLayout();
 
-    ListWatcherMorph.uber.init.call(
-        this,
-        SyntaxElementMorph.prototype.rounding,
-        1.000001, // shadow bug in Chrome,
-        new Color(120, 120, 120)
-    );
-
     this.color = new Color(220, 220, 220);
     this.isDraggable = true;
     this.setExtent(new Point(80, 70).multiplyBy(
@@ -634,6 +634,7 @@ ListWatcherMorph.prototype.setStartIndex = function (index) {
 };
 
 ListWatcherMorph.prototype.fixLayout = function () {
+    if (!this.label) return;
     Morph.prototype.trackChanges = false;
     if (this.frame) {
         this.arrangeCells();
-- 
cgit v1.3.1