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This is an issue where in jQuery v3 the result of outerHeight on a node that doesn’t 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). This is a better solution than manually going to each instance and ORing it with 0 for type safety. https://stackoverflow.com/questions/41454285/jquery-outerheight-returns- undefined-instead-of-null
73 lines
2.7 KiB
JavaScript
73 lines
2.7 KiB
JavaScript
// Miscellaneous early setup.
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var csrf_token;
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$(function () {
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if (util.is_mobile()) {
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// if the client is mobile, disable websockets for message sending
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// (it doesn't work on iOS for some reason).
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page_params.use_websockets = false;
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// Also disable the tutorial; it's ugly on mobile.
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page_params.needs_tutorial = false;
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}
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page_params.page_load_time = new Date().getTime();
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// Display loading indicator. This disappears after the first
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// get_events completes.
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if (page_params.have_initial_messages && !page_params.needs_tutorial) {
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loading.make_indicator($('#page_loading_indicator'), {text: 'Loading...', abs_positioned: true});
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} else if (!page_params.needs_tutorial) {
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$('#first_run_message').show();
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}
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// This requires that we used Django's {% csrf_token %} somewhere on the page.
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csrf_token = $('input[name="csrfmiddlewaretoken"]').attr('value');
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// This is an issue fix where in jQuery v3 the result of outerHeight on a node
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// that doesn’t exist is now “undefined” rather than “null”, which means it
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// will no longer cast to a Number but rather NaN. For this, we create the
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// `safeOuterHeight` and `safeOuterWidth` functions to safely return a result
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// (or 0).
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$.fn.safeOuterHeight = function () {
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return $(this).outerHeight.apply(this, arguments) || 0;
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};
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$.fn.safeOuterWidth = function () {
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return $(this).outerWidth.apply(this, arguments) || 0;
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};
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$.ajaxSetup({
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beforeSend: function (xhr, settings) {
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if (!(/^http:.*/.test(settings.url) || /^https:.*/.test(settings.url))) {
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// Only send the token to relative URLs i.e. locally.
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xhr.setRequestHeader("X-CSRFToken", csrf_token);
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}
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},
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});
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// For some reason, jQuery wants this to be attached to an element.
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$(document).ajaxError(function (event, xhr) {
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if (xhr.status === 401) {
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// We got logged out somehow, perhaps from another window or a session timeout.
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// We could display an error message, but jumping right to the login page seems
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// smoother and conveys the same information.
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window.location.replace(page_params.login_page);
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}
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});
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if (typeof $ !== 'undefined') {
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$.fn.expectOne = function () {
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if (blueslip && this.length !== 1) {
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blueslip.error("Expected one element in jQuery set, " + this.length + " found");
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}
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return this;
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};
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$.fn.within = function (sel) {
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return ($(this).is(sel) || $(this).closest(sel).length);
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};
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}
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});
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