From 93eee66ee05073f651e64aa467cbcafb8cceedd4 Mon Sep 17 00:00:00 2001
From: Dylan Piercey <pierceydylan@gmail.com>
Date: Thu, 24 Aug 2017 12:37:20 -0700
Subject: [PATCH] Add ability to update globals by setting new input.

---
 docs/components.md                            |  2 +-
 src/components/Component.js                   |  3 +++
 .../input-global/index.marko                  |  6 ++++++
 .../components-browser/input-global/test.js   | 20 +++++++++++++++++++
 4 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 test/autotests/components-browser/input-global/index.marko
 create mode 100644 test/autotests/components-browser/input-global/test.js

diff --git a/docs/components.md b/docs/components.md
index ed8f9dc03..391a2025f 100644
--- a/docs/components.md
+++ b/docs/components.md
@@ -483,7 +483,7 @@ this.setStateDirty('numbers');
 
 ### `this.input`
 
-The current input for the component.  Setting `this.input` will result in the component being re-rendered.
+The current input for the component. Setting `this.input` will result in the component being re-rendered. If a `$global` property is set the `out.global` will also be updated during the re-render, otherwise the existing `$global` is used.
 
 ## Variables
 
diff --git a/src/components/Component.js b/src/components/Component.js
index ebcb6194c..eddeda780 100644
--- a/src/components/Component.js
+++ b/src/components/Component.js
@@ -437,6 +437,9 @@ Component.prototype = componentProto = {
 
         if (this.___input === undefined) {
             this.___input = newInput;
+            if (newInput.$global) {
+                this.___global = newInput.$global;
+            }
         }
 
         return newInput;
diff --git a/test/autotests/components-browser/input-global/index.marko b/test/autotests/components-browser/input-global/index.marko
new file mode 100644
index 000000000..551db5cde
--- /dev/null
+++ b/test/autotests/components-browser/input-global/index.marko
@@ -0,0 +1,6 @@
+class {
+}
+
+<div key="current">
+    Pathname: ${out.global.pathname}
+</div>
diff --git a/test/autotests/components-browser/input-global/test.js b/test/autotests/components-browser/input-global/test.js
new file mode 100644
index 000000000..752c90815
--- /dev/null
+++ b/test/autotests/components-browser/input-global/test.js
@@ -0,0 +1,20 @@
+var expect = require('chai').expect;
+
+module.exports = function(helpers) {
+    var component = helpers.mount(require('./index.marko'), {
+        $global: {
+            pathname:'/'
+        }
+    });
+
+    expect(component.getEl('current').innerHTML).to.equal('Pathname: /');
+
+    component.input = {
+        $global: {
+            pathname: '/test'
+        }
+    }
+    component.update();
+
+    expect(component.getEl('current').innerHTML).to.equal('Pathname: /test');
+};