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368 lines
10 KiB
JavaScript
368 lines
10 KiB
JavaScript
/* global Module */
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/* Magic Mirror
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* Module: WeatherForecast
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*
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* By Michael Teeuw http://michaelteeuw.nl
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* MIT Licensed.
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*/
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Module.register("weatherforecast",{
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// Default module config.
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defaults: {
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location: false,
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locationID: false,
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appid: "",
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units: config.units,
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maxNumberOfDays: 7,
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showRainAmount: false,
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updateInterval: 10 * 60 * 1000, // every 10 minutes
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animationSpeed: 1000,
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timeFormat: config.timeFormat,
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lang: config.language,
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fade: true,
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fadePoint: 0.25, // Start on 1/4th of the list.
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colored: false,
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initialLoadDelay: 2500, // 2.5 seconds delay. This delay is used to keep the OpenWeather API happy.
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retryDelay: 2500,
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apiVersion: "2.5",
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apiBase: "http://api.openweathermap.org/data/",
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forecastEndpoint: "forecast/daily",
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appendLocationNameToHeader: true,
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calendarClass: "calendar",
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roundTemp: false,
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iconTable: {
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"01d": "wi-day-sunny",
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"02d": "wi-day-cloudy",
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"03d": "wi-cloudy",
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"04d": "wi-cloudy-windy",
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"09d": "wi-showers",
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"10d": "wi-rain",
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"11d": "wi-thunderstorm",
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"13d": "wi-snow",
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"50d": "wi-fog",
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"01n": "wi-night-clear",
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"02n": "wi-night-cloudy",
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"03n": "wi-night-cloudy",
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"04n": "wi-night-cloudy",
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"09n": "wi-night-showers",
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"10n": "wi-night-rain",
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"11n": "wi-night-thunderstorm",
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"13n": "wi-night-snow",
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"50n": "wi-night-alt-cloudy-windy"
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},
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},
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// create a variable for the first upcoming calendaar event. Used if no location is specified.
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firstEvent: false,
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// create a variable to hold the location name based on the API result.
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fetchedLocationName: "",
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// Define required scripts.
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getScripts: function() {
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return ["moment.js"];
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},
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// Define required scripts.
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getStyles: function() {
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return ["weather-icons.css", "weatherforecast.css"];
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},
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// Define required translations.
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getTranslations: function() {
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// The translations for the default modules are defined in the core translation files.
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// Therefor we can just return false. Otherwise we should have returned a dictionary.
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// If you're trying to build yiur own module including translations, check out the documentation.
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return false;
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},
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// Define start sequence.
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start: function() {
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Log.info("Starting module: " + this.name);
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// Set locale.
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moment.locale(config.language);
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this.forecast = [];
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this.loaded = false;
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this.scheduleUpdate(this.config.initialLoadDelay);
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this.updateTimer = null;
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},
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// Override dom generator.
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getDom: function() {
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var wrapper = document.createElement("div");
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if (this.config.appid === "") {
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wrapper.innerHTML = "Please set the correct openweather <i>appid</i> in the config for module: " + this.name + ".";
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wrapper.className = "dimmed light small";
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return wrapper;
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}
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if (!this.loaded) {
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wrapper.innerHTML = this.translate("LOADING");
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wrapper.className = "dimmed light small";
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return wrapper;
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}
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var table = document.createElement("table");
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table.className = "small";
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for (var f in this.forecast) {
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var forecast = this.forecast[f];
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var row = document.createElement("tr");
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if (this.config.colored) {
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row.className = "colored";
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}
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table.appendChild(row);
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var dayCell = document.createElement("td");
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dayCell.className = "day";
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dayCell.innerHTML = forecast.day;
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row.appendChild(dayCell);
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var iconCell = document.createElement("td");
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iconCell.className = "bright weather-icon";
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row.appendChild(iconCell);
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var icon = document.createElement("span");
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icon.className = "wi weathericon " + forecast.icon;
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iconCell.appendChild(icon);
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var maxTempCell = document.createElement("td");
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maxTempCell.innerHTML = forecast.maxTemp;
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maxTempCell.className = "align-right bright max-temp";
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row.appendChild(maxTempCell);
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var minTempCell = document.createElement("td");
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minTempCell.innerHTML = forecast.minTemp;
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minTempCell.className = "align-right min-temp";
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row.appendChild(minTempCell);
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if (this.config.showRainAmount) {
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var rainCell = document.createElement("td");
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if (isNaN(forecast.rain)) {
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rainCell.innerHTML = "";
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} else {
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if(config.units !== "imperial") {
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rainCell.innerHTML = forecast.rain + " mm";
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} else {
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rainCell.innerHTML = (parseFloat(forecast.rain) / 25.4).toFixed(2) + " in";
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}
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}
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rainCell.className = "align-right bright rain";
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row.appendChild(rainCell);
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}
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if (this.config.fade && this.config.fadePoint < 1) {
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if (this.config.fadePoint < 0) {
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this.config.fadePoint = 0;
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}
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var startingPoint = this.forecast.length * this.config.fadePoint;
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var steps = this.forecast.length - startingPoint;
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if (f >= startingPoint) {
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var currentStep = f - startingPoint;
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row.style.opacity = 1 - (1 / steps * currentStep);
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}
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}
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}
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return table;
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},
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// Override getHeader method.
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getHeader: function() {
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if (this.config.appendLocationNameToHeader) {
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return this.data.header + " " + this.fetchedLocationName;
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}
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return this.data.header;
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},
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// Override notification handler.
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notificationReceived: function(notification, payload, sender) {
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if (notification === "DOM_OBJECTS_CREATED") {
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if (this.config.appendLocationNameToHeader) {
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this.hide(0, {lockString: this.identifier});
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}
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}
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if (notification === "CALENDAR_EVENTS") {
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var senderClasses = sender.data.classes.toLowerCase().split(" ");
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if (senderClasses.indexOf(this.config.calendarClass.toLowerCase()) !== -1) {
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this.firstEvent = false;
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for (var e in payload) {
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var event = payload[e];
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if (event.location || event.geo) {
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this.firstEvent = event;
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//Log.log("First upcoming event with location: ", event);
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break;
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}
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}
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}
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}
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},
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/* updateWeather(compliments)
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* Requests new data from openweather.org.
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* Calls processWeather on succesfull response.
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*/
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updateWeather: function() {
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if (this.config.appid === "") {
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Log.error("WeatherForecast: APPID not set!");
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return;
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}
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var url = this.config.apiBase + this.config.apiVersion + "/" + this.config.forecastEndpoint + this.getParams();
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var self = this;
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var retry = true;
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var weatherRequest = new XMLHttpRequest();
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weatherRequest.open("GET", url, true);
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weatherRequest.onreadystatechange = function() {
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if (this.readyState === 4) {
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if (this.status === 200) {
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self.processWeather(JSON.parse(this.response));
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} else if (this.status === 401) {
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self.updateDom(self.config.animationSpeed);
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Log.error(self.name + ": Incorrect APPID.");
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retry = true;
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} else {
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Log.error(self.name + ": Could not load weather.");
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}
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if (retry) {
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self.scheduleUpdate((self.loaded) ? -1 : self.config.retryDelay);
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}
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}
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};
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weatherRequest.send();
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},
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/* getParams(compliments)
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* Generates an url with api parameters based on the config.
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*
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* return String - URL params.
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*/
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getParams: function() {
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var params = "?";
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if(this.config.locationID) {
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params += "id=" + this.config.locationID;
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} else if(this.config.location) {
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params += "q=" + this.config.location;
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} else if (this.firstEvent && this.firstEvent.geo) {
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params += "lat=" + this.firstEvent.geo.lat + "&lon=" + this.firstEvent.geo.lon
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} else if (this.firstEvent && this.firstEvent.location) {
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params += "q=" + this.firstEvent.location;
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} else {
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this.hide(this.config.animationSpeed, {lockString:this.identifier});
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return;
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}
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params += "&units=" + this.config.units;
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params += "&lang=" + this.config.lang;
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/*
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* Submit a specific number of days to forecast, between 1 to 16 days.
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* The OpenWeatherMap API properly handles values outside of the 1 - 16 range and returns 7 days by default.
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* This is simply being pedantic and doing it ourselves.
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*/
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params += "&cnt=" + (((this.config.maxNumberOfDays < 1) || (this.config.maxNumberOfDays > 16)) ? 7 : this.config.maxNumberOfDays);
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params += "&APPID=" + this.config.appid;
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return params;
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},
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/* processWeather(data)
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* Uses the received data to set the various values.
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*
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* argument data object - Weather information received form openweather.org.
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*/
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processWeather: function(data) {
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this.fetchedLocationName = data.city.name + ", " + data.city.country;
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this.forecast = [];
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for (var i = 0, count = data.list.length; i < count; i++) {
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var forecast = data.list[i];
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this.forecast.push({
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day: moment(forecast.dt, "X").format("ddd"),
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icon: this.config.iconTable[forecast.weather[0].icon],
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maxTemp: this.roundValue(forecast.temp.max),
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minTemp: this.roundValue(forecast.temp.min),
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rain: this.roundValue(forecast.rain)
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});
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}
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//Log.log(this.forecast);
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this.show(this.config.animationSpeed, {lockString:this.identifier});
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this.loaded = true;
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this.updateDom(this.config.animationSpeed);
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},
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/* scheduleUpdate()
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* Schedule next update.
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*
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* argument delay number - Milliseconds before next update. If empty, this.config.updateInterval is used.
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*/
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scheduleUpdate: function(delay) {
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var nextLoad = this.config.updateInterval;
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if (typeof delay !== "undefined" && delay >= 0) {
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nextLoad = delay;
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}
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var self = this;
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clearTimeout(this.updateTimer);
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this.updateTimer = setTimeout(function() {
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self.updateWeather();
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}, nextLoad);
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},
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/* ms2Beaufort(ms)
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* Converts m2 to beaufort (windspeed).
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*
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* see:
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* http://www.spc.noaa.gov/faq/tornado/beaufort.html
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* https://en.wikipedia.org/wiki/Beaufort_scale#Modern_scale
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*
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* argument ms number - Windspeed in m/s.
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*
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* return number - Windspeed in beaufort.
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*/
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ms2Beaufort: function(ms) {
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var kmh = ms * 60 * 60 / 1000;
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var speeds = [1, 5, 11, 19, 28, 38, 49, 61, 74, 88, 102, 117, 1000];
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for (var beaufort in speeds) {
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var speed = speeds[beaufort];
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if (speed > kmh) {
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return beaufort;
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}
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}
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return 12;
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},
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/* function(temperature)
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* Rounds a temperature to 1 decimal or integer (depending on config.roundTemp).
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*
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* argument temperature number - Temperature.
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*
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* return string - Rounded Temperature.
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*/
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roundValue: function(temperature) {
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var decimals = this.config.roundTemp ? 0 : 1;
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return parseFloat(temperature).toFixed(decimals);
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}
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});
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