github_navigation.js

// Copyright (C) 2018 Michael Comella
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE X CONSORTIUM
// BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
// CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Except as contained in this notice, the name(s) of the above copyright holders
// shall not be used in advertising or otherwise to promote the sale, use or other
// dealings in this Software without prior written authorization.

/*
 * Current script version: 0.0.1.
 *
 * For usage details, see the README:
 *   https://github.com/mcomella/github-content-script-navigation
 */
(() => {
    var currentLocation = window.location.href;
    function dispatchIfLocationUpdate() {
        // We don't want to dispatch for unrelated mutations
        // (e.g. issues are added) so we check location.
        let newLocation = window.location.href;
        if (newLocation !== currentLocation) {
            currentLocation = newLocation;
            onPageLoad(); // defined by external content script.
        }
    }

    let githubContainerObserver = new MutationObserver(dispatchIfLocationUpdate);
    let githubContainer = document.getElementById('js-repo-pjax-container');
    githubContainerObserver.observe(githubContainer, {childList: true});
})();

onPageLoad();