mirror of
https://github.com/jellyfin/jellyfin-web
synced 2025-03-30 19:56:21 +00:00
619 lines
14 KiB
JavaScript
619 lines
14 KiB
JavaScript
/* globals require, module */
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'use strict';
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/**
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* Module dependencies.
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*/
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var pathtoRegexp = require('path-to-regexp');
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/**
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* Module exports.
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*/
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module.exports = page;
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/**
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* Detect click event
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*/
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var clickEvent = ('undefined' !== typeof document) && document.ontouchstart ? 'touchstart' : 'click';
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/**
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* To work properly with the URL
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* history.location generated polyfill in https://github.com/devote/HTML5-History-API
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*/
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var location = ('undefined' !== typeof window) && (window.history.location || window.location);
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/**
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* Perform initial dispatch.
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*/
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var dispatch = true;
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/**
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* Decode URL components (query string, pathname, hash).
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* Accommodates both regular percent encoding and x-www-form-urlencoded format.
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*/
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var decodeURLComponents = true;
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/**
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* Base path.
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*/
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var base = '';
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/**
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* Running flag.
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*/
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var running;
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/**
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* HashBang option
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*/
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var hashbang = false;
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/**
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* Previous context, for capturing
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* page exit events.
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*/
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var prevContext;
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/**
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* Register `path` with callback `fn()`,
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* or route `path`, or redirection,
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* or `page.start()`.
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*
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* page(fn);
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* page('*', fn);
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* page('/user/:id', load, user);
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* page('/user/' + user.id, { some: 'thing' });
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* page('/user/' + user.id);
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* page('/from', '/to')
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* page();
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*
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* @param {String|Function} path
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* @param {Function} fn...
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* @api public
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*/
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function page(path, fn) {
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// <callback>
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if ('function' === typeof path) {
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return page('*', path);
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}
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// route <path> to <callback ...>
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if ('function' === typeof fn) {
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var route = new Route(path);
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for (var i = 1; i < arguments.length; ++i) {
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page.callbacks.push(route.middleware(arguments[i]));
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}
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// show <path> with [state]
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} else if ('string' === typeof path) {
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page['string' === typeof fn ? 'redirect' : 'show'](path, fn);
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// start [options]
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} else {
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page.start(path);
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}
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}
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/**
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* Callback functions.
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*/
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page.callbacks = [];
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page.exits = [];
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/**
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* Current path being processed
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* @type {String}
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*/
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page.current = '';
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/**
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* Number of pages navigated to.
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* @type {number}
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*
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* page.len == 0;
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* page('/login');
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* page.len == 1;
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*/
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page.len = 0;
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/**
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* Get or set basepath to `path`.
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*
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* @param {String} path
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* @api public
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*/
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page.base = function(path) {
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if (0 === arguments.length) return base;
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base = path;
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};
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/**
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* Bind with the given `options`.
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*
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* Options:
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*
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* - `click` bind to click events [true]
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* - `popstate` bind to popstate [true]
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* - `dispatch` perform initial dispatch [true]
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*
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* @param {Object} options
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* @api public
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*/
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page.start = function(options) {
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options = options || {};
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if (running) return;
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running = true;
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if (false === options.dispatch) dispatch = false;
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if (false === options.decodeURLComponents) decodeURLComponents = false;
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if (false !== options.popstate) window.addEventListener('popstate', onpopstate, false);
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if (false !== options.click) {
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document.addEventListener(clickEvent, onclick, false);
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}
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if (true === options.hashbang) hashbang = true;
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if (!dispatch) return;
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var url = (hashbang && ~location.hash.indexOf('#!')) ? location.hash.substr(2) + location.search : location.pathname + location.search + location.hash;
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page.replace(url, null, true, dispatch);
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};
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/**
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* Unbind click and popstate event handlers.
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*
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* @api public
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*/
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page.stop = function() {
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if (!running) return;
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page.current = '';
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page.len = 0;
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running = false;
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document.removeEventListener(clickEvent, onclick, false);
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window.removeEventListener('popstate', onpopstate, false);
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};
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/**
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* Show `path` with optional `state` object.
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*
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* @param {String} path
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* @param {Object} state
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* @param {Boolean} dispatch
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* @return {Context}
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* @api public
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*/
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page.show = function(path, state, dispatch, push) {
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var ctx = new Context(path, state);
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page.current = ctx.path;
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if (false !== dispatch) page.dispatch(ctx);
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if (false !== ctx.handled && false !== push) ctx.pushState();
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return ctx;
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};
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/**
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* Goes back in the history
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* Back should always let the current route push state and then go back.
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*
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* @param {String} path - fallback path to go back if no more history exists, if undefined defaults to page.base
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* @param {Object} [state]
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* @api public
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*/
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page.back = function(path, state) {
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if (page.len > 0) {
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// this may need more testing to see if all browsers
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// wait for the next tick to go back in history
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history.back();
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page.len--;
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} else if (path) {
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setTimeout(function() {
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page.show(path, state);
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});
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}else{
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setTimeout(function() {
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page.show(base, state);
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});
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}
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};
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/**
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* Register route to redirect from one path to other
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* or just redirect to another route
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*
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* @param {String} from - if param 'to' is undefined redirects to 'from'
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* @param {String} [to]
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* @api public
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*/
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page.redirect = function(from, to) {
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// Define route from a path to another
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if ('string' === typeof from && 'string' === typeof to) {
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page(from, function(e) {
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setTimeout(function() {
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page.replace(to);
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}, 0);
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});
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}
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// Wait for the push state and replace it with another
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if ('string' === typeof from && 'undefined' === typeof to) {
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setTimeout(function() {
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page.replace(from);
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}, 0);
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}
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};
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/**
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* Replace `path` with optional `state` object.
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*
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* @param {String} path
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* @param {Object} state
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* @return {Context}
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* @api public
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*/
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page.replace = function(path, state, init, dispatch) {
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var ctx = new Context(path, state);
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page.current = ctx.path;
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ctx.init = init;
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ctx.save(); // save before dispatching, which may redirect
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if (false !== dispatch) page.dispatch(ctx);
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return ctx;
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};
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/**
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* Dispatch the given `ctx`.
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*
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* @param {Object} ctx
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* @api private
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*/
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page.dispatch = function(ctx) {
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var prev = prevContext,
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i = 0,
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j = 0;
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prevContext = ctx;
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function nextExit() {
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var fn = page.exits[j++];
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if (!fn) return nextEnter();
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fn(prev, nextExit);
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}
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function nextEnter() {
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var fn = page.callbacks[i++];
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if (ctx.path !== page.current) {
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ctx.handled = false;
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return;
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}
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if (!fn) return unhandled(ctx);
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fn(ctx, nextEnter);
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}
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if (prev) {
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nextExit();
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} else {
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nextEnter();
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}
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};
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/**
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* Unhandled `ctx`. When it's not the initial
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* popstate then redirect. If you wish to handle
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* 404s on your own use `page('*', callback)`.
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*
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* @param {Context} ctx
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* @api private
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*/
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function unhandled(ctx) {
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if (ctx.handled) return;
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var current;
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if (hashbang) {
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current = base + location.hash.replace('#!', '');
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} else {
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current = location.pathname + location.search;
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}
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if (current === ctx.canonicalPath) return;
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page.stop();
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ctx.handled = false;
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location.href = ctx.canonicalPath;
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}
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/**
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* Register an exit route on `path` with
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* callback `fn()`, which will be called
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* on the previous context when a new
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* page is visited.
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*/
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page.exit = function(path, fn) {
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if (typeof path === 'function') {
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return page.exit('*', path);
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}
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var route = new Route(path);
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for (var i = 1; i < arguments.length; ++i) {
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page.exits.push(route.middleware(arguments[i]));
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}
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};
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/**
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* Remove URL encoding from the given `str`.
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* Accommodates whitespace in both x-www-form-urlencoded
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* and regular percent-encoded form.
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*
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* @param {str} URL component to decode
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*/
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function decodeURLEncodedURIComponent(val) {
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if (typeof val !== 'string') { return val; }
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return decodeURLComponents ? decodeURIComponent(val.replace(/\+/g, ' ')) : val;
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}
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/**
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* Initialize a new "request" `Context`
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* with the given `path` and optional initial `state`.
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*
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* @param {String} path
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* @param {Object} state
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* @api public
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*/
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function Context(path, state) {
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if ('/' === path[0] && 0 !== path.indexOf(base)) path = base + (hashbang ? '#!' : '') + path;
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var i = path.indexOf('?');
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this.canonicalPath = path;
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this.path = path.replace(base, '') || '/';
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if (hashbang) this.path = this.path.replace('#!', '') || '/';
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this.title = document.title;
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this.state = state || {};
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this.state.path = path;
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this.querystring = ~i ? decodeURLEncodedURIComponent(path.slice(i + 1)) : '';
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this.pathname = decodeURLEncodedURIComponent(~i ? path.slice(0, i) : path);
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this.params = {};
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// fragment
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this.hash = '';
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if (!hashbang) {
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if (!~this.path.indexOf('#')) return;
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var parts = this.path.split('#');
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this.path = parts[0];
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this.hash = decodeURLEncodedURIComponent(parts[1]) || '';
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this.querystring = this.querystring.split('#')[0];
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}
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}
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/**
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* Expose `Context`.
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*/
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page.Context = Context;
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/**
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* Push state.
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*
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* @api private
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*/
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Context.prototype.pushState = function() {
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page.len++;
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history.pushState(this.state, this.title, hashbang && this.path !== '/' ? '#!' + this.path : this.canonicalPath);
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};
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/**
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* Save the context state.
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*
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* @api public
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*/
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Context.prototype.save = function() {
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history.replaceState(this.state, this.title, hashbang && this.path !== '/' ? '#!' + this.path : this.canonicalPath);
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};
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/**
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* Initialize `Route` with the given HTTP `path`,
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* and an array of `callbacks` and `options`.
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*
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* Options:
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*
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* - `sensitive` enable case-sensitive routes
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* - `strict` enable strict matching for trailing slashes
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*
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* @param {String} path
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* @param {Object} options.
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* @api private
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*/
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function Route(path, options) {
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options = options || {};
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this.path = (path === '*') ? '(.*)' : path;
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this.method = 'GET';
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this.regexp = pathtoRegexp(this.path,
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this.keys = [],
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options.sensitive,
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options.strict);
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}
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/**
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* Expose `Route`.
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*/
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page.Route = Route;
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/**
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* Return route middleware with
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* the given callback `fn()`.
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*
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* @param {Function} fn
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* @return {Function}
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* @api public
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*/
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Route.prototype.middleware = function(fn) {
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var self = this;
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return function(ctx, next) {
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if (self.match(ctx.path, ctx.params)) return fn(ctx, next);
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next();
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};
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};
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/**
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* Check if this route matches `path`, if so
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* populate `params`.
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*
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* @param {String} path
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* @param {Object} params
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* @return {Boolean}
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* @api private
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*/
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Route.prototype.match = function(path, params) {
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var keys = this.keys,
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qsIndex = path.indexOf('?'),
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pathname = ~qsIndex ? path.slice(0, qsIndex) : path,
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m = this.regexp.exec(decodeURIComponent(pathname));
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if (!m) return false;
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for (var i = 1, len = m.length; i < len; ++i) {
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var key = keys[i - 1];
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var val = decodeURLEncodedURIComponent(m[i]);
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if (val !== undefined || !(hasOwnProperty.call(params, key.name))) {
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params[key.name] = val;
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}
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}
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return true;
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};
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/**
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* Handle "populate" events.
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*/
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var onpopstate = (function () {
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var loaded = false;
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if ('undefined' === typeof window) {
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return;
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}
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if (document.readyState === 'complete') {
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loaded = true;
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} else {
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window.addEventListener('load', function() {
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setTimeout(function() {
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loaded = true;
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}, 0);
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});
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}
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return function onpopstate(e) {
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if (!loaded) return;
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if (e.state) {
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var path = e.state.path;
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page.replace(path, e.state);
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} else {
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page.show(location.pathname + location.hash, undefined, undefined, false);
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}
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};
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})();
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/**
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* Handle "click" events.
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*/
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function onclick(e) {
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if (1 !== which(e)) return;
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if (e.metaKey || e.ctrlKey || e.shiftKey) return;
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if (e.defaultPrevented) return;
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// ensure link
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var el = e.target;
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while (el && 'A' !== el.nodeName) el = el.parentNode;
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if (!el || 'A' !== el.nodeName) return;
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// Ignore if tag has
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// 1. "download" attribute
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// 2. rel="external" attribute
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if (el.hasAttribute('download') || el.getAttribute('rel') === 'external') return;
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// ensure non-hash for the same path
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var link = el.getAttribute('href');
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if (!hashbang && el.pathname === location.pathname && (el.hash || '#' === link)) return;
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// Check for mailto: in the href
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if (link && link.indexOf('mailto:') > -1) return;
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// check target
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if (el.target) return;
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// x-origin
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if (!sameOrigin(el.href)) return;
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// rebuild path
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var path = el.pathname + el.search + (el.hash || '');
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// strip leading "/[drive letter]:" on NW.js on Windows
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if (typeof process !== 'undefined' && path.match(/^\/[a-zA-Z]:\//)) {
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path = path.replace(/^\/[a-zA-Z]:\//, '/');
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}
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// same page
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var orig = path;
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if (path.indexOf(base) === 0) {
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path = path.substr(base.length);
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}
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if (hashbang) path = path.replace('#!', '');
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if (base && orig === path) return;
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e.preventDefault();
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page.show(orig);
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}
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/**
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* Event button.
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*/
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function which(e) {
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e = e || window.event;
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return null === e.which ? e.button : e.which;
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}
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/**
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* Check if `href` is the same origin.
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*/
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function sameOrigin(href) {
|
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var origin = location.protocol + '//' + location.hostname;
|
|
if (location.port) origin += ':' + location.port;
|
|
return (href && (0 === href.indexOf(origin)));
|
|
}
|
|
|
|
page.sameOrigin = sameOrigin;
|