mirror of
https://github.com/jellyfin/jellyfin-web.git
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331 lines
9.9 KiB
HTML
331 lines
9.9 KiB
HTML
<!--
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@license
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Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
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This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
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The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
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The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
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Code distributed by Google as part of the polymer project is also
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subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
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-->
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<link rel="import" href="../polymer/polymer.html">
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<!--
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The `iron-location` element manages binding to and from the current URL.
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iron-location is the first, and lowest level element in the Polymer team's
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routing system. This is a beta release of iron-location as we continue work
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on higher level elements, and as such iron-location may undergo breaking
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changes.
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#### Properties
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When the URL is: `/search?query=583#details` iron-location's properties will be:
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- path: `'/search'`
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- query: `'query=583'`
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- hash: `'details'`
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These bindings are bidirectional. Modifying them will in turn modify the URL.
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iron-location is only active while it is attached to the document.
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#### Links
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While iron-location is active in the document it will intercept clicks on links
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within your site, updating the URL pushing the updated URL out through the
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databinding system. iron-location only intercepts clicks with the intent to
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open in the same window, so middle mouse clicks and ctrl/cmd clicks work fine.
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You can customize this behavior with the `urlSpaceRegex`.
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#### Dwell Time
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iron-location protects against accidental history spamming by only adding
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entries to the user's history if the URL stays unchanged for `dwellTime`
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milliseconds.
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@demo demo/index.html
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-->
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<script>
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'use strict';
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Polymer({
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is: 'iron-location',
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properties: {
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/**
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* The pathname component of the URL.
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*/
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path: {
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type: String,
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notify: true,
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value: function() {
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return window.location.pathname;
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}
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},
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/**
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* The query string portion of the URL.
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*/
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query: {
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type: String,
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notify: true,
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value: function() {
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return window.location.search.slice(1);
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}
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},
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/**
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* The hash component of the URL.
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*/
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hash: {
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type: String,
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notify: true,
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value: function() {
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return window.location.hash.slice(1);
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}
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},
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/**
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* If the user was on a URL for less than `dwellTime` milliseconds, it
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* won't be added to the browser's history, but instead will be replaced
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* by the next entry.
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*
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* This is to prevent large numbers of entries from clogging up the user's
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* browser history. Disable by setting to a negative number.
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*/
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dwellTime: {
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type: Number,
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value: 2000
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},
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/**
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* A regexp that defines the set of URLs that should be considered part
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* of this web app.
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*
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* Clicking on a link that matches this regex won't result in a full page
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* navigation, but will instead just update the URL state in place.
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*
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* This regexp is given everything after the origin in an absolute
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* URL. So to match just URLs that start with /search/ do:
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* url-space-regex="^/search/"
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*
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* @type {string|RegExp}
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*/
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urlSpaceRegex: {
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type: String,
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value: ''
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},
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/**
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* urlSpaceRegex, but coerced into a regexp.
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*
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* @type {RegExp}
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*/
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_urlSpaceRegExp: {
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computed: '_makeRegExp(urlSpaceRegex)'
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},
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_lastChangedAt: {
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type: Number
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},
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_initialized: {
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type: Boolean,
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value: false
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}
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},
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hostAttributes: {
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hidden: true
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},
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observers: [
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'_updateUrl(path, query, hash)'
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],
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attached: function() {
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this.listen(window, 'hashchange', '_hashChanged');
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this.listen(window, 'location-changed', '_urlChanged');
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this.listen(window, 'popstate', '_urlChanged');
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this.listen(/** @type {!HTMLBodyElement} */(document.body), 'click', '_globalOnClick');
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// Give a 200ms grace period to make initial redirects without any
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// additions to the user's history.
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this._lastChangedAt = window.performance.now() - (this.dwellTime - 200);
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this._initialized = true;
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this._urlChanged();
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},
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detached: function() {
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this.unlisten(window, 'hashchange', '_hashChanged');
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this.unlisten(window, 'location-changed', '_urlChanged');
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this.unlisten(window, 'popstate', '_urlChanged');
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this.unlisten(/** @type {!HTMLBodyElement} */(document.body), 'click', '_globalOnClick');
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this._initialized = false;
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},
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_hashChanged: function() {
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this.hash = window.location.hash.substring(1);
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},
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_urlChanged: function() {
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// We want to extract all info out of the updated URL before we
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// try to write anything back into it.
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//
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// i.e. without _dontUpdateUrl we'd overwrite the new path with the old
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// one when we set this.hash. Likewise for query.
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this._dontUpdateUrl = true;
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this._hashChanged();
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this.path = window.location.pathname;
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this.query = window.location.search.substring(1);
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this._dontUpdateUrl = false;
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this._updateUrl();
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},
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_getUrl: function() {
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var url = this.path;
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var query = this.query;
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if (query) {
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url += '?' + query;
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}
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if (this.hash) {
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url += '#' + this.hash;
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}
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return url;
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},
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_updateUrl: function() {
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if (this._dontUpdateUrl || !this._initialized) {
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return;
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}
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var newUrl = this._getUrl();
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var currentUrl = (
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window.location.pathname +
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window.location.search +
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window.location.hash
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);
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if (newUrl == currentUrl) {
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// nothing to do, the URL didn't change
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return;
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}
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// Need to use a full URL in case the containing page has a base URI.
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var fullNewUrl = new URL(
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newUrl, window.location.protocol + '//' + window.location.host).href;
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var now = window.performance.now();
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var shouldReplace =
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this._lastChangedAt + this.dwellTime > now;
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this._lastChangedAt = now;
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if (shouldReplace) {
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window.history.replaceState({}, '', fullNewUrl);
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} else {
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window.history.pushState({}, '', fullNewUrl);
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}
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this.fire('location-changed', {}, {node: window});
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},
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/**
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* A necessary evil so that links work as expected. Does its best to
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* bail out early if possible.
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*
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* @param {MouseEvent} event .
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*/
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_globalOnClick: function(event) {
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// If another event handler has stopped this event then there's nothing
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// for us to do. This can happen e.g. when there are multiple
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// iron-location elements in a page.
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if (event.defaultPrevented) {
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return;
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}
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var href = this._getSameOriginLinkHref(event);
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if (!href) {
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return;
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}
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event.preventDefault();
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// If the navigation is to the current page we shouldn't add a history
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// entry or fire a change event.
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if (href === window.location.href) {
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return;
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}
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window.history.pushState({}, '', href);
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this.fire('location-changed', {}, {node: window});
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},
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/**
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* Returns the absolute URL of the link (if any) that this click event
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* is clicking on, if we can and should override the resulting full
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* page navigation. Returns null otherwise.
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*
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* @param {MouseEvent} event .
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* @return {string?} .
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*/
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_getSameOriginLinkHref: function(event) {
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// We only care about left-clicks.
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if (event.button !== 0) {
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return null;
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}
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// We don't want modified clicks, where the intent is to open the page
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// in a new tab.
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if (event.metaKey || event.ctrlKey) {
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return null;
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}
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var eventPath = Polymer.dom(event).path;
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var anchor = null;
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for (var i = 0; i < eventPath.length; i++) {
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var element = eventPath[i];
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if (element.tagName === 'A' && element.href) {
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anchor = element;
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break;
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}
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}
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// If there's no link there's nothing to do.
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if (!anchor) {
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return null;
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}
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// Target blank is a new tab, don't intercept.
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if (anchor.target === '_blank') {
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return null;
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}
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// If the link is for an existing parent frame, don't intercept.
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if ((anchor.target === '_top' ||
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anchor.target === '_parent') &&
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window.top !== window) {
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return null;
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}
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var href = anchor.href;
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// It only makes sense for us to intercept same-origin navigations.
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// pushState/replaceState don't work with cross-origin links.
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var url;
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if (document.baseURI != null) {
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url = new URL(href, /** @type {string} */(document.baseURI));
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} else {
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url = new URL(href);
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}
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var origin;
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// IE Polyfill
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if (window.location.origin) {
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origin = window.location.origin;
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} else {
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origin = window.location.protocol + '//' + window.location.hostname;
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if (window.location.port) {
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origin += ':' + window.location.port;
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}
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}
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if (url.origin !== origin) {
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return null;
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}
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var normalizedHref = url.pathname + url.search + url.hash;
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// If we've been configured not to handle this url... don't handle it!
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if (this._urlSpaceRegExp &&
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!this._urlSpaceRegExp.test(normalizedHref)) {
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return null;
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}
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// Need to use a full URL in case the containing page has a base URI.
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var fullNormalizedHref = new URL(
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normalizedHref, window.location.href).href;
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return fullNormalizedHref;
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},
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_makeRegExp: function(urlSpaceRegex) {
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return RegExp(urlSpaceRegex);
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}
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});
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</script>
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