Meteor.autorun

examples/other/template-demo/client/template-demo.js

@@ -137,32 +137,6 @@ Template.timer.destroyed = function () {
 
 ///////////////////////////////////////////////////////////////////////////////
 
-// Run f(). Record its dependencies. Rerun it whenever the
-// dependencies change.
-//
-// Returns an object with a stop() method. Call stop() to stop the
-// rerunning.
-//
-// XXX this should go into Meteor core as Meteor.autorun
-var autorun = function (f) {
-  var ctx;
-  var slain = false;
-  var rerun = function () {
-    if (slain)
-      return;
-    ctx = new Meteor.deps.Context;
-    ctx.run(f);
-    ctx.on_invalidate(rerun);
-  };
-  rerun();
-  return {
-    stop: function () {
-      slain = true;
-      ctx.invalidate();
-    }
-  };
-};
-
 Template.d3Demo.left = function () {
   return { group: "left" };
 };
@@ -230,7 +204,7 @@ Template.circles.rendered = function () {
 
   if (! self.handle) {
     d3.select(self.node).append("rect");
-    self.handle = autorun(function () {
+    self.handle = Meteor.autorun(function () {
       var circle = d3.select(self.node).selectAll("circle")
         .data(Circles.find({group: data.group}).fetch(),
               function (d) { return d._id; });

packages/deps/deps-utils.js

@@ -1,5 +1,7 @@
 (function () {
 
+  ////////// Meteor.deps.ContextSet
+
   // Constructor for an empty ContextSet.
   //
   // A ContextSet is used to hold a set of Meteor.deps.Contexts that
@@ -51,4 +53,32 @@
   };
 
   Meteor.deps.ContextSet = ContextSet;
+
+  ////////// Meteor.autorun
+
+  // Run f(). Record its dependencies. Rerun it whenever the
+  // dependencies change.
+  //
+  // Returns an object with a stop() method. Call stop() to stop the
+  // rerunning.  Also passes this object as an argument to f.
+  Meteor.autorun = function (f) {
+    var ctx;
+    var slain = false;
+    var handle = {
+      stop: function () {
+        slain = true;
+        ctx.invalidate();
+      }
+    };
+    var rerun = function () {
+      if (slain)
+        return;
+      ctx = new Meteor.deps.Context;
+      ctx.run(function () { f.call(this, handle); });
+      ctx.on_invalidate(rerun);
+    };
+    rerun();
+    return handle;
+  };
+
 })();