From 0d9dab44020a5990bad1044c3c2f7f879de675be Mon Sep 17 00:00:00 2001
From: Igor Sfiligoi <isfiligoi@ucsd.edu>
Date: Wed, 6 Nov 2013 05:41:56 +0000
Subject: Add async flot object, to make life easier for the developers

---
 src/lib/rrdFlotAsync.js | 75 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 src/lib/rrdFlotAsync.js

diff --git a/src/lib/rrdFlotAsync.js b/src/lib/rrdFlotAsync.js
new file mode 100644
index 0000000..b631cbb
--- /dev/null
+++ b/src/lib/rrdFlotAsync.js
@@ -0,0 +1,75 @@
+/*
+ * Async versions of the rrdFlot class
+ * Part of the javascriptRRD package
+ * Copyright (c) 2013 Igor Sfiligoi, isfiligoi@ucsd.edu
+ *
+ * Original repository: http://javascriptrrd.sourceforge.net/
+ * 
+ * MIT License [http://www.opensource.org/licenses/mit-license.php]
+ *
+ */
+
+/*
+ * Local dependencies:
+ *  binaryXHR.js
+ *  rrdFile.js
+ *  rrdFlot.js
+ *
+ * Those modules may have other requirements.
+ *
+ */
+
+/* Internal helper function */
+function rrdFlotAsyncCallback(bf,obj) {
+  var i_rrd_data=undefined;
+  if (bf.getLength()<1) {
+    alert("File "+obj.url+" is empty (possibly loading failed)!");
+    return 1;
+  }
+  try {
+    var i_rrd_data=new RRDFile(bf);            
+  } catch(err) {
+    alert("File "+obj.url+" is not a valid RRD archive!\n"+err);
+  }
+  if (i_rrd_data!=undefined) {
+    if (obj.rrd_data!=null) delete obj.rrd_data;
+    obj.rrd_data=i_rrd_data;
+    obj.callback();
+  }
+}
+
+/*
+ * For further documentation about the arguments
+ * see rrdFlot.js
+ */
+
+/* Use url==null if you do not know the url yet */
+function rrdFlotAsync(html_id, url, graph_options, ds_graph_options, rrdflot_defaults) {
+  this.html_id=html_id;
+  this.url=url;
+  this.graph_options=graph_options;
+  this.ds_graph_options=ds_graph_options;
+  this.rrdflot_defaults=rrdflot_defaults;
+
+  this.rrd_flot_obj=null;
+  this.rrd_data=null;
+
+  if (url!=null) {
+    this.reload(url);
+  }
+}
+
+rrdFlotAsync.prototype.reload = function(url) {
+  this.url=url;
+  try {
+    FetchBinaryURLAsync(url,rrdFlotAsyncCallback,this);
+  } catch (err) {
+    alert("Failed loading "+url+"\n"+err);
+  }
+};
+
+rrdFlotAsync.prototype.callback = function() {
+  if (this.rrd_flot_obj!=null) delete this.rrd_flot_obj;
+  this.rrd_flot_obj=new rrdFlot(this.html_id, this.rrd_data, this.graph_options, this.ds_graph_options, this.rrdflot_defaults);
+};
+
-- 
cgit v1.1-4-g5e80