Created
April 23, 2015 20:17
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ViziCities BlueprintInputCSV
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| /* globals window, _, VIZI, d3, Papa */ | |
| (function() { | |
| "use strict"; | |
| /** | |
| * Blueprint CSV input | |
| * @author Robin Hawkes - vizicities.com | |
| */ | |
| // input: { | |
| // type: "BlueprintInputCSV", | |
| // options: { | |
| // path: "/data/sample.csv" | |
| // } | |
| // } | |
| VIZI.BlueprintInputCSV = function(options) { | |
| var self = this; | |
| VIZI.BlueprintInput.call(self, options); | |
| _.defaults(self.options, {}); | |
| // Triggers and actions reference | |
| self.triggers = [ | |
| {name: "initialised", arguments: []}, | |
| {name: "dataReceived", arguments: ["csv"]}, | |
| ]; | |
| self.actions = [ | |
| {name: "requestData", arguments: []}, | |
| ]; | |
| }; | |
| VIZI.BlueprintInputCSV.prototype = Object.create( VIZI.BlueprintInput.prototype ); | |
| // Initialise instance and start automated processes | |
| VIZI.BlueprintInputCSV.prototype.init = function() { | |
| var self = this; | |
| self.emit("initialised"); | |
| }; | |
| // TODO: Pull from cache if available | |
| VIZI.BlueprintInputCSV.prototype.requestData = function() { | |
| var self = this; | |
| if (!self.options.path) { | |
| throw new Error("Required path option missing"); | |
| } | |
| // Request data | |
| d3.text(self.options.path, function(error, data) { | |
| if (error) { | |
| if (VIZI.DEBUG) console.log("Failed to request CSV data"); | |
| console.warn(error); | |
| return; | |
| } | |
| var results = Papa.parse(data, { | |
| header: true, | |
| complete: function(results) { | |
| self.emit("dataReceived", {data: results.data}); | |
| } | |
| }); | |
| }); | |
| }; | |
| }()); |
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