test_get_printer_orientation.html

Enable keyboard shortcuts

<!DOCTYPE HTML>

<html>

<head>

  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>

</head>

<body onload="run()">

<script>

SimpleTest.waitForExplicitFinish();

async function run() {

  try {

    let printerList = Cc["@mozilla.org/gfx/printerlist;1"].getService(

      Ci.nsIPrinterList

);

    var settingsSvc = Cc["@mozilla.org/gfx/printsettings-service;1"].getService(

      Ci.nsIPrintSettingsService

);

    let printers = await printerList.printers;

    for (let printer of printers) {

      printer.QueryInterface(Ci.nsIPrinter);

      let printerInfo = await printer.printerInfo;

      // Look up the printer's defaultSettings:

      let defaultSettings = printerInfo.defaultSettings;

      // Let the printer impose its defaults onto a fresh settings object:

      let freshSettings = settingsSvc.createNewPrintSettings();

      printerList.initPrintSettingsFromPrinter(printer.name, freshSettings);

      // Make sure they agree on the default orientation:

      is(freshSettings.orientation, defaultSettings.orientation,

         "initPrintSettingsFromPrinter should produce the same orientation " +

         "as the printer's defaultSettings");

    // This ok() just lets us avoid failure-due-to-no-tests-being-run, on

    // devices that have no printers available & hence skip the loop above:

    ok(true, "Finished traversing printers.");

  } catch (e) {

    ok(false, `Error thrown while retrieving printer info: ${e}.`);

    console.error(e);

  SimpleTest.finish();

</script>

</body>

</html>