- Author:
- David Nickerson <david.nickerson@gmail.com>
- Date:
- 2021-09-17 15:50:49+12:00
- Desc:
- tweak html formatting
- Permanent Source URI:
- https://models.fieldml.org/workspace/a1/rawfile/1b3862589abf79ae9119ee0b5e99a8b785d762e1/dojo-presentation/js/andre/ChartData.js
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is "Andre's Reference Description Framework".
*
* The Initial Developer of the Original Code is
* David Nickerson <nickerso@users.sourceforge.net>.
* Portions created by the Initial Developer are Copyright (C) 2007-2008
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
dojo.provide("andre.ChartData");
dojo.require("dojox.data.CsvStore");
dojo.declare("andre.ChartData", null, {
/*
Summary:
An object to manage the data for a given chart.
Assumes the CSV data file is in the format:
position,label,x,y
FIXME: should maybe extend dojox.data.CsvStore?
FIXME: is there a way to tie directly to the HDF5 data file?
*/
// store: dojox.data.CsvStore
// The data store containing all the chart data
store: null,
fetchInProgress: 0,
fetchedData: null,
constructor: function (/*String*/url) {
// summary: initialise the data object, creating the CsvStore from the given url.
if (url && url.length > 0) {
console.log("Creating ChartData with the URL: " + url);
this.store = new dojox.data.CsvStore({url: url, label: "label"});
if (this.store == null) {
console.log("ERROR: error creating CSV data store");
return false;
}
} else {
console.log("ERROR: invalid URL provided for the CSV file (" + url + ")");
return false;
}
},
fetchDataByPosition: function (/*String|Number*/position, /*String*/onItemTopic) {
// summary:
console.log("Fetching data for position: " + position);
this.fetch({'position': position},onItemTopic,position);
},
fetchDataByLabel: function (/*String*/label, /*String*/onItemTopic) {
// summary:
console.log("Fetching data for label: " + label);
return this.fetch({'label': label},onItemTopic,label);
},
fetch: function (/*Object*/query, /*String*/onItemTopic, /*String*/series) {
// summary: initiate a fetch.
//console.log("Fetching data for query: " + dojo.toJson(query));
if (!this.store) {
console.log("ERROR: missing data store in fetchDataByPosition()");
return false;
}
//console.log("fetch - staring fetch with query: " + dojo.toJson(query));
this.store.fetch({
scope: this,
query: query,
onItem: function (item, request) {
//console.log("fetch - item found");
//var x = this.store.getValue(item,"x",/*default value*/0.0);
//var y = this.store.getValue(item,"y",/*default value*/0.0);
//console.log("found the data point: {" + x + "," + y + "}");
var message = {};
message.series = series;
message.request = request; /* in case we need to abort? */
message.complete = false;
message.error = false;
message.x = this.store.getValue(item,"x",/*default value*/0.0);
message.y = this.store.getValue(item,"y",/*default value*/0.0);
dojo.publish(onItemTopic,[message]);
},
onComplete: function (items, request) {
//console.log("fetch - fetch complete");
var message = {};
message.series = series;
message.request = request; /* in case we need to abort? */
message.complete = true;
message.error = false;
dojo.publish(onItemTopic,[message]);
},
onError: function (error, request) {
//console.log("fetch - fetch error: " + error);
var message = {};
message.series = series;
message.request = request; /* in case we need to abort? */
message.complete = false;
message.error = true;
message.errorMessage = error;
dojo.publish(onItemTopic,[message]);
},
});
return true;
},
});
