diff options
| author | Igor Sfiligoi <isfiligoi@ucsd.edu> | 2013-11-06 05:41:56 +0000 |
|---|---|---|
| committer | Igor Sfiligoi <isfiligoi@ucsd.edu> | 2013-11-06 05:41:56 +0000 |
| commit | 0d9dab44020a5990bad1044c3c2f7f879de675be (patch) | |
| tree | 72f47b27f30ebf4cc11820732b25921ed78ccb60 | |
| parent | e5b380959764e2606cb2eef87bff3ade7f8df8ec (diff) | |
Add async flot object, to make life easier for the developers
| -rw-r--r-- | src/lib/rrdFlotAsync.js | 75 |
1 files changed, 75 insertions, 0 deletions
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);
+};
+
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