From ab21aa2e7cd851830237b6dfceaa57d26f3d9435 Mon Sep 17 00:00:00 2001
From: Avital Oliver <avital@thewe.net>
Date: Mon, 30 Jun 2014 19:50:11 -0700
Subject: [PATCH] re-implement UI._templateInstance()

---
 packages/blaze/view.js                       | 10 ++++++++++
 packages/spacebars-tests/template_tests.html |  4 ++++
 packages/spacebars-tests/template_tests.js   |  4 ++--
 packages/templating/templating.js            |  8 ++++++++
 4 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/packages/blaze/view.js b/packages/blaze/view.js
index 7b60b7541c..378aebda84 100644
--- a/packages/blaze/view.js
+++ b/packages/blaze/view.js
@@ -359,6 +359,16 @@ Blaze.getCurrentView = function (kind) {
   }
 };
 
+// Gets the nearest ancestor view that corresponds to a template
+Blaze.getCurrentTemplateView = function () {
+  var view = Blaze.getCurrentView();
+
+  while (view && ! view.template)
+    view = view.parentView;
+
+  return view || null;
+};
+
 Blaze.getParentView = function (view, kind) {
   var v = view.parentView;
 
diff --git a/packages/spacebars-tests/template_tests.html b/packages/spacebars-tests/template_tests.html
index 0667b4384e..168018952f 100644
--- a/packages/spacebars-tests/template_tests.html
+++ b/packages/spacebars-tests/template_tests.html
@@ -833,3 +833,7 @@ Hi there!
 <template name="spacebars_test_template_created_rendered_destroyed_each_sub">
   {{.}}
 </template>
+
+<template name="spacebars_test_ui_getElementData">
+  <span></span>
+</template>
diff --git a/packages/spacebars-tests/template_tests.js b/packages/spacebars-tests/template_tests.js
index 67f5142f98..6fc29bf69a 100644
--- a/packages/spacebars-tests/template_tests.js
+++ b/packages/spacebars-tests/template_tests.js
@@ -2132,7 +2132,7 @@ Tinytest.add(
 );
 
 Tinytest.add(
-  "spacebars-tests - template_tests - access template instance from helper",
+  "spacebars-tests - template_tests - UI._templateInstance from helper",
   function (test) {
     // Set a property on the template instance; check that it's still
     // there from a helper.
@@ -2154,7 +2154,7 @@ Tinytest.add(
 );
 
 Tinytest.add(
-  "spacebars-tests - template_tests - access template instance from helper, " +
+  "spacebars-tests - template_tests - UI._templateInstance from helper, " +
     "template instance is kept up-to-date",
   function (test) {
     var tmpl = Template.spacebars_test_template_instance_helper;
diff --git a/packages/templating/templating.js b/packages/templating/templating.js
index 2334308b7c..a47b9e973f 100644
--- a/packages/templating/templating.js
+++ b/packages/templating/templating.js
@@ -55,6 +55,14 @@ Template.__updateTemplateInstance = function (view) {
   return tmpl;
 };
 
+UI._templateInstance = function () {
+  var templateView = Blaze.getCurrentTemplateView();
+  if (! templateView)
+    throw new Error("No current template");
+
+  return Template.__updateTemplateInstance(templateView);
+};
+
 Template.prototype.events = function (eventMap) {
   var template = this;
   template.__eventMaps = (template.__eventMaps || []);