From c10b83f28f0e2a032d947977e8c698fb5ff1030b Mon Sep 17 00:00:00 2001
From: Bryan Housel <bryan@7thposition.com>
Date: Sun, 26 Apr 2015 01:08:31 -0400
Subject: [PATCH] iD.actions.Revert (see #537)

---
 index.html                  |  1 +
 js/id/actions/revert.js     |  5 +++++
 test/index.html             |  2 ++
 test/index_packaged.html    |  1 +
 test/spec/actions/revert.js | 11 +++++++++++
 5 files changed, 20 insertions(+)
 create mode 100644 js/id/actions/revert.js
 create mode 100644 test/spec/actions/revert.js

diff --git a/index.html b/index.html
index fd5e3aeba..348fabb32 100644
--- a/index.html
+++ b/index.html
@@ -169,6 +169,7 @@
         <script src='js/id/actions/rotate_way.js'></script>
         <script src='js/id/actions/restrict_turn.js'></script>
         <script src='js/id/actions/reverse.js'></script>
+        <script src='js/id/actions/revert.js'></script>
         <script src='js/id/actions/straighten.js'></script>
         <script src='js/id/actions/split.js'></script>
         <script src='js/id/actions/unrestrict_turn.js'></script>
diff --git a/js/id/actions/revert.js b/js/id/actions/revert.js
new file mode 100644
index 000000000..21da5bf7e
--- /dev/null
+++ b/js/id/actions/revert.js
@@ -0,0 +1,5 @@
+iD.actions.Revert = function(entity) {
+    return function(graph) {
+        return graph.revert(entity);
+    };
+};
diff --git a/test/index.html b/test/index.html
index ae6159606..d72a3840b 100644
--- a/test/index.html
+++ b/test/index.html
@@ -147,6 +147,7 @@
     <script src='../js/id/actions/orthogonalize.js'></script>
     <script src='../js/id/actions/restrict_turn.js'></script>
     <script src='../js/id/actions/reverse.js'></script>
+    <script src='../js/id/actions/revert.js'></script>
     <script src='../js/id/actions/rotate_way.js'></script>
     <script src='../js/id/actions/split.js'></script>
     <script src='../js/id/actions/straighten.js'></script>
@@ -250,6 +251,7 @@
     <script src="spec/actions/noop.js"></script>
     <script src="spec/actions/restrict_turn.js"></script>
     <script src="spec/actions/reverse.js"></script>
+    <script src="spec/actions/revert.js"></script>
     <script src="spec/actions/split.js"></script>
     <script src="spec/actions/unrestrict_turn.js"></script>
 
diff --git a/test/index_packaged.html b/test/index_packaged.html
index fe590c099..e3ea2f00c 100644
--- a/test/index_packaged.html
+++ b/test/index_packaged.html
@@ -54,6 +54,7 @@
     <script src="spec/actions/orthogonalize.js"></script>
     <script src="spec/actions/restrict_turn.js"></script>
     <script src="spec/actions/reverse.js"></script>
+    <script src="spec/actions/revert.js"></script>
     <script src="spec/actions/split.js"></script>
     <script src="spec/actions/straighten.js"></script>
     <script src="spec/actions/unrestrict_turn.js"></script>
diff --git a/test/spec/actions/revert.js b/test/spec/actions/revert.js
new file mode 100644
index 000000000..cdfa19da1
--- /dev/null
+++ b/test/spec/actions/revert.js
@@ -0,0 +1,11 @@
+describe('iD.actions.Revert', function() {
+    it('reverts an entity', function() {
+        var n1 = iD.Node({id: 'n' }),
+            n2 = n1.update({}),
+            graph = iD.Graph([n1]).replace(n2);
+
+        expect(graph.entity('n')).to.equal(n2);
+        graph = iD.actions.Revert(n2)(graph)
+        expect(graph.entity('n')).to.equal(n1);
+    });
+});