From 4e2ce9a4ee2ffb5e22423290fd3ae34045e339fb Mon Sep 17 00:00:00 2001
From: jmoenig <jens@moenig.org>
Date: Fri, 6 Jun 2014 09:07:42 +0200
Subject: [PATCH] gracefully hide & show the stage, fixed #281

---
 history.txt |  6 +++++-
 objects.js  | 19 ++++++++++++++++++-
 2 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/history.txt b/history.txt
index fd4acc8d..3f52e149 100755
--- a/history.txt
+++ b/history.txt
@@ -2155,4 +2155,8 @@ ______
 * Objects: stop replacing the empty string with the number zero in watchers
 * Threads: initialize new variables with zero (instead of null)
 * Objects: fixed #465
-* Threads: fixed #457
+* Objects: fixed #457
+
+140605
+------
+* Objects: gracefully hide & show the stage, fixed #281
diff --git a/objects.js b/objects.js
index 897f14db..88ee3510 100644
--- a/objects.js
+++ b/objects.js
@@ -125,7 +125,7 @@ PrototypeHatBlockMorph*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.objects = '2014-Jun-05';
+modules.objects = '2014-Jun-06';
 
 var SpriteMorph;
 var StageMorph;
@@ -5191,6 +5191,23 @@ StageMorph.prototype.thumbnail = function (extentPoint, excludedSprite) {
     return trg;
 };
 
+// StageMorph hiding and showing:
+
+/*
+    override the inherited behavior to recursively hide/show all
+    children.
+*/
+
+StageMorph.prototype.hide = function () {
+    this.isVisible = false;
+    this.changed();
+};
+
+StageMorph.prototype.show = function () {
+    this.isVisible = true;
+    this.changed();
+};
+
 // StageMorph cloning overrice
 
 StageMorph.prototype.createClone = nop;