364 lines
9.7 KiB
JavaScript
364 lines
9.7 KiB
JavaScript
var dataDir = require("sdk/self").data;
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var noti = require("sdk/notifications");
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var panels = require("sdk/panel");
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var request = require("sdk/request");
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var sp = require("sdk/simple-prefs");
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var ss = require("sdk/simple-storage").storage;
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var tabs = require("sdk/tabs");
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var sysver = parseInt(require("sdk/system").version);
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var wid = 0;
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var workers = {};
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var reqs = {};
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if (require("sdk/self").loadReason !== "startup" && sp.prefs.toCurr === "") showOptions();
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if (!ss.currRates) ss.currRates = {};
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if (!ss.currRatesLT) ss.currRatesLT = {};
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// if an exchange rate is older than 1 day, delete it
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for (var i in ss.currRatesLT) {
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if (Date.now() - ss.currRatesLT[i] > 86400000) {
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if (ss.currRates.hasOwnProperty(i)) delete ss.currRates[i];
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delete ss.currRatesLT[i];
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}
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}
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var btnIcons = {
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on: {
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"16": dataDir.url("icon16.png"),
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"32": dataDir.url("icon32.png"),
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"48": dataDir.url("icon48.png")
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},
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off: {
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"16": dataDir.url("icon16_off.png"),
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"32": dataDir.url("icon32_off.png"),
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"48": dataDir.url("icon48_off.png")
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}
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};
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var button;
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// add toggle button
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if (sysver >= 29) {
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button = require("sdk/ui").ToggleButton({
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id: "scsccbtn",
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label: "SCs Currency Converter",
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icon: (sp.prefs.btn) ? btnIcons.on : btnIcons.off,
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onChange: function(state) {
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if (state.checked) {
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if (sysver >= 30) panel.show({ position: this });
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else panel.show();
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}
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else panel.hide();
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}
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});
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}
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// or add widget
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else {
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button = require("sdk/widget").Widget({
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id: "scsccbtn",
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label: "SCs Currency Converter",
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contentURL: (sp.prefs.btn) ? btnIcons.on["32"] : btnIcons.off["32"],
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onClick: function() {
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panel.show();
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}
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});
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}
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var panel = panels.Panel({
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width: 250,
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position: { top: 5, right: 30 },
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contentURL: dataDir.url("panel.html"),
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onShow: function() {
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this.port.emit("showPanel", sp.prefs.toCurr);
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},
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onHide: function() {
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if (sysver >= 29 && button.state("window").checked) {
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if (sysver >= 30) button.state("window", { checked: false });
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else require("sdk/timers").setTimeout(function() { button.state("window", { checked: false }); }, 300);
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}
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}
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});
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panel.port.on("loaded", panelFirstRun);
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function panelFirstRun() {
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panel.port.emit("firstRun", [ ss.currRates, ss.currRatesLT, sp.prefs.btn, sp.prefs.toCurr ]);
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panel.port.removeListener("loaded", panelFirstRun);
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}
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panel.port.on("panelHeight", function(data) {
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panel.height = data;
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if (panel.height > 400) panel.height = 400;
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});
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panel.port.on("turnOnOff", function() {
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if (sp.prefs.btn) {
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if (sysver >= 29) button.icon = btnIcons.off;
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else button.contentURL = btnIcons.off["32"];
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sp.prefs.btn = false;
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}
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else {
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if (sysver >= 29) button.icon = btnIcons.on;
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else button.contentURL = btnIcons.on["32"];
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sp.prefs.btn = true;
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}
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});
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panel.port.on("options", function() {
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showOptions();
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panel.hide();
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});
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panel.port.on("resCurrRates", function() {
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ss.currRates = {};
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ss.currRatesLT = {};
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sendData("CurrRates", tabs.activeTab.id);
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});
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require("sdk/page-mod").PageMod({
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include: "*",
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contentScriptWhen: "end",
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contentScriptFile: dataDir.url("scscc.js"),
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attachTo: ["existing", "top", "frame"],
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onAttach: function(worker) {
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workers[wid] = {};
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workers[wid].worker = worker;
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workers[wid].uPrefsChanged = false;
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workers[wid].currRatesChanged = false;
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wid++;
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worker.port.emit("firstRun", [ sp.prefs, ss.currRates ]);
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worker.port.on("getCurrRates", function(data) {
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var fromCurr = data[0];
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var toCurr = data[1];
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// if a request for this exchange rate runs already, return
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if (reqs[fromCurr + "to" + toCurr + "runs"]) return;
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// if last request was within an hour, return
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if (ss.currRatesLT.hasOwnProperty(fromCurr + "to" + toCurr) && Date.now() - ss.currRatesLT[fromCurr + "to" + toCurr] < 3600000) return;
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// else start request
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reqs[fromCurr + "to" + toCurr + "runs"] = true;
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getCurrRate(fromCurr, toCurr, worker.tab.id);
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});
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worker.on("detach", function() {
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for (var id in workers) {
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if (workers[id].worker === this) {
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delete workers[id];
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return;
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}
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}
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});
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}
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});
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// refresh marked workers on tab activate
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tabs.on("activate", function(tab) {
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for (var id in workers) {
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if (workers[id].worker.tab && workers[id].worker.tab.id === tab.id) {
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if (workers[id].uPrefsChanged) {
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workers[id].uPrefsChanged = false;
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// catch: The page is currently hidden and can no longer be used until it is visible again.
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try {
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workers[id].worker.port.emit("refreshUPrefs", sp.prefs);
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}
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catch (err) {
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console.log("SCsCC - send prefs error: " + err.message);
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}
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}
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if (workers[id].currRatesChanged) {
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workers[id].currRatesChanged = false;
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// catch: The page is currently hidden and can no longer be used until it is visible again.
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try {
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workers[id].worker.port.emit("refreshCurrRates", ss.currRates);
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}
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catch (err) {
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console.log("SCsCC - send currrates error: " + err.message);
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}
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}
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}
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}
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});
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// preference change listener
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sp.on("", function(prefName) {
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// if notification preference changed, skip
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if (prefName === "noti") return;
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// on action button state change refresh the active tab immediately
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if (prefName === "btn") {
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sendData("UPrefs", tabs.activeTab.id);
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return;
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}
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// change the symbol on currency change
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if (prefName === "toCurr") {
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sp.prefs.symbol = sp.prefs[prefName];
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}
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// if a space inserted before the symbol, remove it, and set symbSep to true
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if (prefName === "symbol" && (sp.prefs.symbol.charAt(0) === " " || sp.prefs.symbol.charAt(sp.prefs.symbol.length - 1) === " ")) {
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if (!sp.prefs.symbSep) sp.prefs.symbSep = true;
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sp.prefs.symbol = sp.prefs.symbol.trim(); //sp.prefs.symbol.slice(1);
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}
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// don't let to set the same thousand and decimal separator
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if ((prefName === "sepTho" || prefName === "sepDec") && sp.prefs.sepTho === sp.prefs.sepDec) {
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if (prefName === "sepTho" && sp.prefs.sepTho.trim() !== "") {
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sp.prefs.sepDec = (sp.prefs.sepTho === ",") ? "." : ",";
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}
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else {
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sp.prefs.sepTho = (sp.prefs.sepDec === ",") ? "." : ",";
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}
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}
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sendData("UPrefs", false);
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});
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// reset exchange rates button listener
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sp.on("resCurrRates", function() {
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ss.currRates = {};
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ss.currRatesLT = {};
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sendData("CurrRates", false);
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});
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function showOptions() {
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require("sdk/window/utils").getMostRecentBrowserWindow().BrowserOpenAddonsMgr("addons://detail/" + encodeURIComponent(require("sdk/self").id) + "/preferences");
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}
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// get and update the exchange rate of the requested currencies
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function getCurrRate(fromCurr, toCurr, tabid) {
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reqs[fromCurr + "to" + toCurr + "req"] = request.Request({
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url: "http://www.google.com/search?q=1%20" + fromCurr + "%20to%20" + toCurr,
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onComplete: function(response) { reqComplete(response, fromCurr, toCurr, tabid); }
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}).get();
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};
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// on getCurrRate request complete
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function reqComplete(response, fromCurr, toCurr, tabid) {
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var rc, rt;
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console.log("SCsCC - get " + fromCurr + " to " + toCurr);
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if (response.status === 200) {
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ss.currRatesLT[fromCurr + "to" + toCurr] = Date.now();
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rt = response.text.match(/id=["']?exchange_rate["']?(?:\s+type=["']?hidden["']?)?\s+value=["']?(\d+\.\d+)/i);
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if (rt && rt.hasOwnProperty(1)) {
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rc = parseFloat(rt[1]);
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// if match is not a number
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if (isNaN(rc)) {
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reqs[fromCurr + "to" + toCurr + "runs"] = false;
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console.log("SCsCC - got text, but not a number");
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return;
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}
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// return if exchange rate didn't change (no refresh)
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if (rc === ss.currRates[fromCurr + "to" + toCurr]) {
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panel.port.emit("refreshCurrRates", [ ss.currRates, ss.currRatesLT ]);
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reqs[fromCurr + "to" + toCurr + "runs"] = false;
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console.log("SCsCC - got " + fromCurr + " to " + toCurr + ", exchange rate didn't change",
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ss.currRates[fromCurr + "to" + toCurr],
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new Date(ss.currRatesLT[fromCurr + "to" + toCurr]).toUTCString());
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return;
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}
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// show notification about exchange rate updates if enabled in preferences
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if (sp.prefs.noti) {
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// on update
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if (ss.currRates.hasOwnProperty(fromCurr + "to" + toCurr)) {
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noti.notify({
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title: "SCs Currency Converter",
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text: fromCurr + " to " + toCurr + " exchange rate updated:\n"
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+ ss.currRates[fromCurr + "to" + toCurr] + " → " + rc,
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iconURL: dataDir.url("icon48.png")
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});
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}
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// on frist get
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else {
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noti.notify({
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title: "SCs Currency Converter",
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text: fromCurr + " → " + toCurr + " exchange rate got:\n" + rc,
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iconURL: dataDir.url("icon48.png")
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});
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}
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}
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console.log("SCsCC - got " + fromCurr + " to " + toCurr + ":",
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ss.currRates[fromCurr + "to" + toCurr], "->", rc,
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new Date(ss.currRatesLT[fromCurr + "to" + toCurr]).toUTCString());
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ss.currRates[fromCurr + "to" + toCurr] = rc;
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sendData("CurrRates", tabid);
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}
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else {
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console.log("SCsCC - got text, but regex match failed");
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}
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}
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else {
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// will try again if requested after 10 minues
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ss.currRatesLT[fromCurr + "to" + toCurr] = Date.now() - 3000000;
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console.log("SCsCC - get error:", response.statusText, response.status);
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}
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reqs[fromCurr + "to" + toCurr + "runs"] = false;
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}
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function sendData(what, tabid) {
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var changed, data, refresh;
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refresh = "refresh" + what;
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data = (what === "UPrefs") ? sp.prefs : ss.currRates;
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changed = (what === "UPrefs") ? "uPrefsChanged" : "currRatesChanged";
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for (var id in workers) {
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if (tabid && workers[id].worker.tab && workers[id].worker.tab.id === tabid) {
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// catch: The page is currently hidden and can no longer be used until it is visible again.
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try {
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workers[id].worker.port.emit(refresh, data);
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}
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catch (err) {
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console.log("SCsCC - send " + what + " error: " + err.message);
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}
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}
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else {
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workers[id][changed] = true;
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}
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}
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if (what === "CurrRates") panel.port.emit("refreshCurrRates", [ ss.currRates, ss.currRatesLT ]);
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} |