From 7153e001b9878a4bbb04690bfaaaf764c4efa2c7 Mon Sep 17 00:00:00 2001
From: Dan Vanderkam <dan@dygraphs.com>
Date: Tue, 26 Jul 2011 00:49:41 -0400
Subject: [PATCH] add timingName option

---
 dygraph-options-reference.js             |  9 ++++++++-
 dygraph.js                               | 11 +++++++++++
 tests/dygraph-many-points-benchmark.html |  2 +-
 3 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/dygraph-options-reference.js b/dygraph-options-reference.js
index 5bc7f63..74b7bed 100644
--- a/dygraph-options-reference.js
+++ b/dygraph-options-reference.js
@@ -545,6 +545,12 @@ Dygraph.OPTIONS_REFERENCE =  // <JSON>
     "labels": ["Data"],
     "type": "string (URL of CSV or CSV), GViz DataTable or 2D Array",
     "description": "Sets the data being displayed in the chart. This can only be set when calling updateOptions; it cannot be set from the constructor. For a full description of valid data formats, see the <a href='http://dygraphs.com/data.html'>Data Formats</a> page."
+  },
+  "timingName": {
+    "default": "null",
+    "labels": [ "Debugging" ],
+    "type": "string",
+    "description": "Set this option to log timing information. The value of the option will be logged along with the timimg, so that you can distinguish multiple dygraphs on the same page."
   }
 }
 ;  // </JSON>
@@ -573,7 +579,8 @@ Dygraph.OPTIONS_REFERENCE =  // <JSON>
    'Overall display',
    'Rolling Averages',
    'Value display/formatting',
-   'Zooming'
+   'Zooming',
+   'Debugging'
   ];
   var cats = {};
   for (var i = 0; i < valid_cats.length; i++) cats[valid_cats[i]] = true;
diff --git a/dygraph.js b/dygraph.js
index 555bae4..a1f8c1c 100644
--- a/dygraph.js
+++ b/dygraph.js
@@ -1881,6 +1881,8 @@ Dygraph.prototype.extremeValues_ = function(series) {
  * number of axes, rolling averages, etc.
  */
 Dygraph.prototype.predraw_ = function() {
+  var start = new Date();
+
   // TODO(danvk): move more computations out of drawGraph_ and into here.
   this.computeYAxes_();
 
@@ -1917,6 +1919,8 @@ Dygraph.prototype.predraw_ = function() {
  * @private
  */
 Dygraph.prototype.drawGraph_ = function(clearSelection) {
+  var start = new Date();
+
   if (typeof(clearSelection) === 'undefined') {
     clearSelection = true;
   }
@@ -2078,6 +2082,13 @@ Dygraph.prototype.drawGraph_ = function(clearSelection) {
   if (this.attr_("drawCallback") !== null) {
     this.attr_("drawCallback")(this, is_initial_draw);
   }
+
+  if (this.attr_("timingName")) {
+    var end = new Date();
+    if (console) {
+      console.log(this.attr_("timingName") + " - drawGraph: " + (end - start) + "ms")
+    }
+  }
 };
 
 /**
diff --git a/tests/dygraph-many-points-benchmark.html b/tests/dygraph-many-points-benchmark.html
index 4cf7ef5..d1e2a58 100644
--- a/tests/dygraph-many-points-benchmark.html
+++ b/tests/dygraph-many-points-benchmark.html
@@ -78,7 +78,7 @@
         }
         var rollPeriod = parseInt(
             document.getElementById('roll_period_input').value);
-        var opts = {labels: labels, rollPeriod: rollPeriod};
+        var opts = {labels: labels, rollPeriod: rollPeriod, timingName: "x"};
         var millisecondss = [];
         for (var i = 0; i < repetitions; i++) {
           var start = new Date();
-- 
2.7.4