zulip/static/js/setup.js

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JavaScript
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import $ from "jquery";
import * as loading from "./loading";
import * as util from "./util";
// Miscellaneous early setup.
export let password_change_in_progress = false;
export function set_password_change_in_progress(value) {
password_change_in_progress = value;
}
$(() => {
if (util.is_mobile()) {
// Disable the tutorial; it's ugly on mobile.
page_params.needs_tutorial = false;
}
page_params.page_load_time = Date.now();
// Display loading indicator. This disappears after the first
// get_events completes.
if (!page_params.needs_tutorial) {
loading.make_indicator($("#page_loading_indicator"), {
text: "Loading...",
abs_positioned: true,
});
}
// This is an issue fix where in jQuery v3 the result of outerHeight on a node
// that doesnt exist is now “undefined” rather than “null”, which means it
// will no longer cast to a Number but rather NaN. For this, we create the
// `safeOuterHeight` and `safeOuterWidth` functions to safely return a result
// (or 0).
$.fn.safeOuterHeight = function (...args) {
return this.outerHeight(...args) || 0;
};
$.fn.safeOuterWidth = function (...args) {
return this.outerWidth(...args) || 0;
};
// For some reason, jQuery wants this to be attached to an element.
$(document).ajaxError((event, xhr) => {
if (password_change_in_progress) {
// The backend for handling password change API requests
// will replace the user's session; this results in a
// brief race where any API request will fail with a 401
// error after the old session is deactivated but before
// the new one has been propagated to the browser. So we
// skip our normal HTTP 401 error handling if we're in the
// process of executing a password change.
return;
}
if (xhr.status === 401) {
// We got logged out somehow, perhaps from another window
// changing the user's password, or a session timeout. We
// could display an error message, but jumping right to
// the login page conveys the same information with a
// smoother re-login experience.
window.location.replace(page_params.login_page);
}
});
if (typeof $ !== "undefined") {
$.fn.expectOne = function () {
if (blueslip && this.length !== 1) {
blueslip.error("Expected one element in jQuery set, " + this.length + " found");
}
return this;
};
}
});