zulip/web/src/setup.js

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JavaScript
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import $ from "jquery";
import * as blueslip from "./blueslip";
import * as loading from "./loading";
import {page_params} from "./page_params";
import * as util from "./util";
// Miscellaneous early setup.
$(() => {
if (util.is_mobile()) {
// Disable the tutorial; it's ugly on mobile.
page_params.needs_tutorial = false;
}
page_params.page_load_time = Date.now();
// Display loading indicator. This disappears after the first
// get_events completes.
if (!page_params.needs_tutorial) {
loading.make_indicator($("#page_loading_indicator"), {
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.get_offset_to_window = function () {
return this[0].getBoundingClientRect();
};
$.fn.safeOuterWidth = function (...args) {
return this.outerWidth(...args) || 0;
};
$.fn.expectOne = function () {
if (blueslip && this.length !== 1) {
blueslip.error("Expected one element in jQuery set, found more", {length: this.length});
}
return this;
};
});