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nodebb/public/src/ajaxify.js

535 lines
15 KiB
JavaScript

'use strict';
ajaxify = window.ajaxify || {};
(function () {
var apiXHR = null;
var ajaxifyTimer;
var translator;
var Benchpress;
var retry = true;
var previousBodyClass = '';
// Dumb hack to fool ajaxify into thinking translator is still a global
// When ajaxify is migrated to a require.js module, then this can be merged into the "define" call
require(['translator', 'benchpress'], function (_translator, _Benchpress) {
translator = _translator;
translator.translate('[[error:no-connection]]');
Benchpress = _Benchpress;
});
ajaxify.count = 0;
ajaxify.currentPage = null;
ajaxify.go = function (url, callback, quiet) {
if (!socket.connected) {
if (ajaxify.reconnectAction) {
$(window).off('action:reconnected', ajaxify.reconnectAction);
}
ajaxify.reconnectAction = function (e) {
ajaxify.go(url, callback, quiet);
$(window).off(e);
};
$(window).on('action:reconnected', ajaxify.reconnectAction);
}
// Abort subsequent requests if clicked multiple times within a short window of time
if (ajaxifyTimer && (Date.now() - ajaxifyTimer) < 500) {
return true;
}
ajaxifyTimer = Date.now();
if (ajaxify.handleRedirects(url)) {
return true;
}
app.leaveCurrentRoom();
$(window).off('scroll');
if ($('#content').hasClass('ajaxifying') && apiXHR) {
apiXHR.abort();
}
app.previousUrl = !['reset'].includes(ajaxify.currentPage) ? window.location.pathname.slice(config.relative_path.length) : app.previousUrl;
url = ajaxify.start(url);
// If any listeners alter url and set it to an empty string, abort the ajaxification
if (url === null) {
$(window).trigger('action:ajaxify.end', { url: url, tpl_url: ajaxify.data.template.name, title: ajaxify.data.title });
return false;
}
previousBodyClass = ajaxify.data.bodyClass;
$('#footer, #content').removeClass('hide').addClass('ajaxifying');
ajaxify.loadData(url, function (err, data) {
if (!err || (err && err.data && (parseInt(err.data.status, 10) !== 302 && parseInt(err.data.status, 10) !== 308))) {
ajaxify.updateHistory(url, quiet);
}
if (err) {
return onAjaxError(err, url, callback, quiet);
}
retry = true;
renderTemplate(url, data.templateToRender || data.template.name, data, callback);
});
return true;
};
// this function is called just once from footer on page load
ajaxify.coldLoad = function () {
var url = ajaxify.start(window.location.pathname.slice(1) + window.location.search + window.location.hash);
ajaxify.updateHistory(url, true);
ajaxify.end(url, ajaxify.data.template.name);
$(window).trigger('action:ajaxify.coldLoad');
};
ajaxify.isCold = function () {
return ajaxify.count <= 1;
};
ajaxify.handleRedirects = function (url) {
url = ajaxify.removeRelativePath(url.replace(/^\/|\/$/g, '')).toLowerCase();
var isClientToAdmin = url.startsWith('admin') && window.location.pathname.indexOf(config.relative_path + '/admin') !== 0;
var isAdminToClient = !url.startsWith('admin') && window.location.pathname.indexOf(config.relative_path + '/admin') === 0;
if (isClientToAdmin || isAdminToClient) {
window.open(config.relative_path + '/' + url, '_top');
return true;
}
return false;
};
ajaxify.start = function (url) {
url = ajaxify.removeRelativePath(url.replace(/^\/|\/$/g, ''));
var payload = {
url: url,
};
$(window).trigger('action:ajaxify.start', payload);
ajaxify.count += 1;
return payload.url;
};
ajaxify.updateHistory = function (url, quiet) {
ajaxify.currentPage = url.split(/[?#]/)[0];
if (window.history && window.history.pushState) {
window.history[!quiet ? 'pushState' : 'replaceState']({
url: url,
}, url, config.relative_path + '/' + url);
}
};
function onAjaxError(err, url, callback, quiet) {
var data = err.data;
var textStatus = err.textStatus;
if (data) {
var status = parseInt(data.status, 10);
if (status === 403 || status === 404 || status === 500 || status === 502 || status === 503) {
if (status === 502 && retry) {
retry = false;
ajaxifyTimer = undefined;
return ajaxify.go(url, callback, quiet);
}
if (status === 502) {
status = 500;
}
if (data.responseJSON) {
data.responseJSON.config = config;
}
$('#footer, #content').removeClass('hide').addClass('ajaxifying');
return renderTemplate(url, status.toString(), data.responseJSON || {}, callback);
} else if (status === 401) {
app.alertError('[[global:please_log_in]]');
app.previousUrl = url;
window.location.href = config.relative_path + '/login';
} else if (status === 302 || status === 308) {
if (data.responseJSON && data.responseJSON.external) {
window.location.href = data.responseJSON.external;
} else if (typeof data.responseJSON === 'string') {
ajaxifyTimer = undefined;
ajaxify.go(data.responseJSON.slice(1), callback, quiet);
}
}
} else if (textStatus !== 'abort') {
app.alertError(data.responseJSON.error);
}
}
function renderTemplate(url, tpl_url, data, callback) {
$(window).trigger('action:ajaxify.loadingTemplates', {});
Benchpress.parse(tpl_url, data, function (template) {
translator.translate(template, function (translatedTemplate) {
translatedTemplate = translator.unescape(translatedTemplate);
$('body').removeClass(previousBodyClass).addClass(data.bodyClass);
$('#content').html(translatedTemplate);
ajaxify.end(url, tpl_url);
if (typeof callback === 'function') {
callback();
}
$('#content, #footer').removeClass('ajaxifying');
// Only executed on ajaxify. Otherwise these'd be in ajaxify.end()
updateTitle(data.title);
updateTags();
});
});
}
function updateTitle(title) {
if (!title) {
return;
}
require(['translator'], function (translator) {
title = config.titleLayout.replace(/&#123;/g, '{').replace(/&#125;/g, '}')
.replace('{pageTitle}', function () { return title; })
.replace('{browserTitle}', function () { return config.browserTitle; });
// Allow translation strings in title on ajaxify (#5927)
title = translator.unescape(title);
translator.translate(title, function (translated) {
window.document.title = $('<div></div>').html(translated).text();
});
});
}
function updateTags() {
var metaWhitelist = ['title', 'description', /og:.+/, /article:.+/].map(function (val) {
return new RegExp(val);
});
var linkWhitelist = ['canonical', 'alternate', 'up'];
// Delete the old meta tags
Array.prototype.slice
.call(document.querySelectorAll('head meta'))
.filter(function (el) {
var name = el.getAttribute('property') || el.getAttribute('name');
return metaWhitelist.some(function (exp) {
return !!exp.test(name);
});
})
.forEach(function (el) {
document.head.removeChild(el);
});
// Add new meta tags
ajaxify.data._header.tags.meta
.filter(function (tagObj) {
var name = tagObj.name || tagObj.property;
return metaWhitelist.some(function (exp) {
return !!exp.test(name);
});
})
.forEach(function (tagObj) {
var metaEl = document.createElement('meta');
Object.keys(tagObj).forEach(function (prop) {
metaEl.setAttribute(prop, tagObj[prop]);
});
document.head.appendChild(metaEl);
});
// Delete the old link tags
Array.prototype.slice
.call(document.querySelectorAll('head link'))
.filter(function (el) {
var name = el.getAttribute('rel');
return linkWhitelist.some(function (item) {
return item === name;
});
})
.forEach(function (el) {
document.head.removeChild(el);
});
// Add new link tags
ajaxify.data._header.tags.link
.filter(function (tagObj) {
return linkWhitelist.some(function (item) {
return item === tagObj.rel;
});
})
.forEach(function (tagObj) {
var linkEl = document.createElement('link');
Object.keys(tagObj).forEach(function (prop) {
linkEl.setAttribute(prop, tagObj[prop]);
});
document.head.appendChild(linkEl);
});
}
ajaxify.end = function (url, tpl_url) {
// Scroll back to top of page
if (!ajaxify.isCold()) {
window.scrollTo(0, 0);
}
ajaxify.loadScript(tpl_url, function done() {
$(window).trigger('action:ajaxify.end', { url: url, tpl_url: tpl_url, title: ajaxify.data.title });
});
ajaxify.widgets.render(tpl_url);
$(window).trigger('action:ajaxify.contentLoaded', { url: url, tpl: tpl_url });
app.processPage();
};
ajaxify.parseData = function () {
var dataEl = $('#ajaxify-data');
if (dataEl.length) {
ajaxify.data = JSON.parse(dataEl.text());
dataEl.remove();
}
};
ajaxify.removeRelativePath = function (url) {
if (url.startsWith(config.relative_path.slice(1))) {
url = url.slice(config.relative_path.length);
}
return url;
};
ajaxify.refresh = function (callback) {
ajaxify.go(ajaxify.currentPage + window.location.search + window.location.hash, callback, true);
};
ajaxify.loadScript = function (tpl_url, callback) {
var location = !app.inAdmin ? 'forum/' : '';
if (tpl_url.startsWith('admin')) {
location = '';
}
var data = {
tpl_url: tpl_url,
scripts: [location + tpl_url],
};
$(window).trigger('action:script.load', data);
// Require and parse modules
var outstanding = data.scripts.length;
data.scripts.map(function (script) {
if (typeof script === 'function') {
return function (next) {
script();
next();
};
}
if (typeof script === 'string') {
return function (next) {
require([script], function (script) {
if (script && script.init) {
script.init();
}
next();
}, function () {
// ignore 404 error
next();
});
};
}
return null;
}).filter(Boolean).forEach(function (fn) {
fn(function () {
outstanding -= 1;
if (outstanding === 0) {
callback();
}
});
});
};
ajaxify.loadData = function (url, callback) {
url = ajaxify.removeRelativePath(url);
$(window).trigger('action:ajaxify.loadingData', { url: url });
apiXHR = $.ajax({
url: config.relative_path + '/api/' + url,
cache: false,
headers: {
'X-Return-To': app.previousUrl,
},
success: function (data, textStatus, xhr) {
if (!data) {
return;
}
if (xhr.getResponseHeader('X-Redirect')) {
return callback({
data: {
status: 302,
responseJSON: data,
},
textStatus: 'error',
});
}
ajaxify.data = data;
data.config = config;
$(window).trigger('action:ajaxify.dataLoaded', { url: url, data: data });
callback(null, data);
},
error: function (data, textStatus) {
if (data.status === 0 && textStatus === 'error') {
data.status = 500;
data.responseJSON = data.responseJSON || {};
data.responseJSON.error = '[[error:no-connection]]';
}
callback({
data: data,
textStatus: textStatus,
});
},
});
};
ajaxify.loadTemplate = function (template, callback) {
require([config.assetBaseUrl + '/templates/' + template + '.js'], callback, function (err) {
console.error('Unable to load template: ' + template);
throw err;
});
};
require(['translator', 'benchpress'], function (translator, Benchpress) {
translator.translate('[[error:no-connection]]');
Benchpress.registerLoader(ajaxify.loadTemplate);
Benchpress.setGlobal('config', config);
});
}());
$(document).ready(function () {
$(window).on('popstate', function (ev) {
ev = ev.originalEvent;
if (ev !== null && ev.state) {
if (ev.state.url === null && ev.state.returnPath !== undefined) {
window.history.replaceState({
url: ev.state.returnPath,
}, ev.state.returnPath, config.relative_path + '/' + ev.state.returnPath);
} else if (ev.state.url !== undefined) {
ajaxify.go(ev.state.url, function () {
$(window).trigger('action:popstate', { url: ev.state.url });
}, true);
}
}
});
function ajaxifyAnchors() {
function hrefEmpty(href) {
return href === undefined || href === '' || href === 'javascript:;';
}
var location = document.location || window.location;
var rootUrl = location.protocol + '//' + (location.hostname || location.host) + (location.port ? ':' + location.port : '');
var contentEl = document.getElementById('content');
// Enhancing all anchors to ajaxify...
$(document.body).on('click', 'a', function (e) {
var _self = this;
if (this.target !== '' || (this.protocol !== 'http:' && this.protocol !== 'https:')) {
return;
}
var $this = $(this);
var href = $this.attr('href');
var internalLink = utils.isInternalURI(this, window.location, config.relative_path);
var process = function () {
if (!e.ctrlKey && !e.shiftKey && !e.metaKey && e.which === 1) {
if (internalLink) {
var pathname = this.href.replace(rootUrl + config.relative_path + '/', '');
// Special handling for urls with hashes
if (window.location.pathname === this.pathname && this.hash.length) {
window.location.hash = this.hash;
} else if (ajaxify.go(pathname)) {
e.preventDefault();
}
} else if (window.location.pathname !== config.relative_path + '/outgoing') {
if (config.openOutgoingLinksInNewTab && $.contains(contentEl, this)) {
var externalTab = window.open();
externalTab.opener = null;
externalTab.location = this.href;
e.preventDefault();
} else if (config.useOutgoingLinksPage) {
var safeUrls = config.outgoingLinksWhitelist.trim().split(/[\s,]+/g).filter(Boolean);
var href = this.href;
if (!safeUrls.length || !safeUrls.some(function (url) { return href.indexOf(url) !== -1; })) {
ajaxify.go('outgoing?url=' + encodeURIComponent(href));
e.preventDefault();
}
}
}
}
};
if ($this.attr('data-ajaxify') === 'false') {
if (!internalLink) {
return;
}
return e.preventDefault();
}
// Default behaviour for rss feeds
if (internalLink && href && href.endsWith('.rss')) {
return;
}
// Default behaviour for sitemap
if (internalLink && href && String(_self.pathname).startsWith(config.relative_path + '/sitemap') && href.endsWith('.xml')) {
return;
}
// Default behaviour for uploads and direct links to API urls
if (internalLink && ['/uploads', '/assets/uploads/', '/api/'].some(function (prefix) {
return String(_self.pathname).startsWith(config.relative_path + prefix);
})) {
return;
}
if (hrefEmpty(this.href) || this.protocol === 'javascript:' || href === '#' || href === '') {
return e.preventDefault();
}
if (app.flags && app.flags.hasOwnProperty('_unsaved') && app.flags._unsaved === true) {
if (e.ctrlKey) {
return;
}
bootbox.confirm('[[global:unsaved-changes]]', function (navigate) {
if (navigate) {
app.flags._unsaved = false;
process.call(_self);
}
});
return e.preventDefault();
}
process.call(_self);
});
}
if (window.history && window.history.pushState) {
// Progressive Enhancement, ajaxify available only to modern browsers
ajaxifyAnchors();
}
});