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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
// Length of time (milliseconds) that one blurb stays up before we switch to
// displaying the next one.
var BLURB_CYCLE_MS = 20000;
// How frequently we should update the progress bar state, in milliseconds.
var PROGRESS_BAR_INTERVAL_MS = 250;
window.attachEvent("onload", function () {
// Set direction on the two components of the layout.
var direction = external.getTextDirection();
document.getElementById("text_column").style.direction = direction;
document.getElementById("installing").style.direction = direction;
// Get this page's static strings.
var label = document.getElementById("label");
label.innerText = external.getUIString("installing_label");
document.getElementById("header").innerText =
external.getUIString("installing_header");
document.getElementById("content").innerText =
external.getUIString("installing_content");
// Poll and update the progress bar percentage.
setInterval(function () {
var percent = external.getProgressBarPercent();
var progressBar = document.getElementById("progress_bar");
progressBar.setAttribute("aria-valuenow", percent);
progressBar.style.width = percent + "%";
}, PROGRESS_BAR_INTERVAL_MS);
// Get the blurb strings and initialize the blurb rotation.
var currentBlurb = 0;
// IE8 adds undefined to the array if there is a trailing comma in an
// array literal, so don't allow prettier to add one here.
// prettier-ignore
var blurbStrings = [
external.getUIString("installing_blurb_0"),
external.getUIString("installing_blurb_1"),
external.getUIString("installing_blurb_2")
];
function rotateBlurb() {
document.getElementById("blurb").innerText = blurbStrings[currentBlurb];
currentBlurb = (currentBlurb + 1) % blurbStrings.length;
}
rotateBlurb();
setInterval(rotateBlurb, BLURB_CYCLE_MS);
// Focus the label, in order to get the focus in the web page, to
// assist screen readers. On Win 7's IE8 this causes the focus rectangle
// to be immediately visible, so also hide that here.
label.className += " no-focus-outline";
label.focus();
});
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