184 lines
5.3 KiB
JavaScript
184 lines
5.3 KiB
JavaScript
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/*
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* @copyright 2019 Christoph Wurst <christoph@winzerhof-wurst.at>
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*
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* @author 2019 Christoph Wurst <christoph@winzerhof-wurst.at>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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import _ from 'underscore'
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import OC from './index'
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/**
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* Utility class for the history API,
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* includes fallback to using the URL hash when
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* the browser doesn't support the history API.
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*
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* @namespace OC.Util.History
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*/
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export default {
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_handlers: [],
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/**
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* Push the current URL parameters to the history stack
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* and change the visible URL.
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* Note: this includes a workaround for IE8/IE9 that uses
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* the hash part instead of the search part.
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*
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* @param {Object|string} params to append to the URL, can be either a string
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* or a map
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* @param {string} [url] URL to be used, otherwise the current URL will be used,
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* using the params as query string
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* @param {boolean} [replace=false] whether to replace instead of pushing
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*/
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_pushState: function (params, url, replace) {
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var strParams;
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if (typeof (params) === 'string') {
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strParams = params;
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} else {
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strParams = OC.buildQueryString(params);
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}
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if (window.history.pushState) {
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url = url || location.pathname + '?' + strParams;
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// Workaround for bug with SVG and window.history.pushState on Firefox < 51
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// https://bugzilla.mozilla.org/show_bug.cgi?id=652991
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var isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') > -1;
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if (isFirefox && parseInt(navigator.userAgent.split('/').pop()) < 51) {
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var patterns = document.querySelectorAll('[fill^="url(#"], [stroke^="url(#"], [filter^="url(#invert"]');
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for (var i = 0, ii = patterns.length, pattern; i < ii; i++) {
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pattern = patterns[i];
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pattern.style.fill = pattern.style.fill;
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pattern.style.stroke = pattern.style.stroke;
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pattern.removeAttribute("filter");
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pattern.setAttribute("filter", "url(#invert)");
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}
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}
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if (replace) {
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window.history.replaceState(params, '', url);
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} else {
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window.history.pushState(params, '', url);
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}
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}
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// use URL hash for IE8
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else {
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window.location.hash = '?' + strParams;
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// inhibit next onhashchange that just added itself
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// to the event queue
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this._cancelPop = true;
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}
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},
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/**
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* Push the current URL parameters to the history stack
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* and change the visible URL.
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* Note: this includes a workaround for IE8/IE9 that uses
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* the hash part instead of the search part.
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*
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* @param {Object|string} params to append to the URL, can be either a string
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* or a map
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* @param {string} [url] URL to be used, otherwise the current URL will be used,
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* using the params as query string
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*/
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pushState: function (params, url) {
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return this._pushState(params, url, false);
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},
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/**
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* Push the current URL parameters to the history stack
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* and change the visible URL.
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* Note: this includes a workaround for IE8/IE9 that uses
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* the hash part instead of the search part.
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*
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* @param {Object|string} params to append to the URL, can be either a string
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* or a map
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* @param {string} [url] URL to be used, otherwise the current URL will be used,
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* using the params as query string
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*/
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replaceState: function (params, url) {
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return this._pushState(params, url, true);
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},
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/**
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* Add a popstate handler
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*
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* @param handler function
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*/
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addOnPopStateHandler: function (handler) {
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this._handlers.push(handler);
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},
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/**
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* Parse a query string from the hash part of the URL.
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* (workaround for IE8 / IE9)
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*/
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_parseHashQuery: function () {
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var hash = window.location.hash,
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pos = hash.indexOf('?');
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if (pos >= 0) {
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return hash.substr(pos + 1);
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}
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if (hash.length) {
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// remove hash sign
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return hash.substr(1);
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}
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return '';
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},
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_decodeQuery: function (query) {
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return query.replace(/\+/g, ' ');
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},
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/**
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* Parse the query/search part of the URL.
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* Also try and parse it from the URL hash (for IE8)
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*
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* @return map of parameters
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*/
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parseUrlQuery: function () {
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var query = this._parseHashQuery(),
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params;
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// try and parse from URL hash first
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if (query) {
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params = OC.parseQueryString(this._decodeQuery(query));
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}
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// else read from query attributes
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params = _.extend(params || {}, OC.parseQueryString(this._decodeQuery(location.search)));
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return params || {};
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},
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_onPopState: function (e) {
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if (this._cancelPop) {
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this._cancelPop = false;
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return;
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}
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var params;
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if (!this._handlers.length) {
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return;
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}
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params = (e && e.state);
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if (_.isString(params)) {
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params = OC.parseQueryString(params);
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} else if (!params) {
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params = this.parseUrlQuery() || {};
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}
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for (var i = 0; i < this._handlers.length; i++) {
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this._handlers[i](params);
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}
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}
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}
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