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// Copyright 2023 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
window.pigweed = {};
// Scroll the site nav so that the current page is visible.
window.pigweed.scrollSiteNav = () => {
const siteNav = document.querySelector('.sidebar-scroll');
// The node within the site nav that represents the page that the user is
// currently looking at.
const currentPage = document.querySelector('.current-page');
// Determine which site nav node to scroll to.
let targetNode;
if (
currentPage.classList.contains('toctree-l1') ||
currentPage.classList.contains('toctree-l2')
) {
// Scroll directly to top-level (L1) and second-level (L2) nodes.
targetNode = currentPage;
} else {
// For L3 nodes and deeper, scroll to the node's L2 ancestor so that the
// user sees all the docs in the set.
targetNode = document.querySelector('li.toctree-l2.current');
}
var scrollDistance =
targetNode.getBoundingClientRect().top -
siteNav.getBoundingClientRect().top;
siteNav.scrollTop = scrollDistance;
};
window.addEventListener('DOMContentLoaded', () => {
// (b/297384789) Start Mermaid diagram rendering as early as possible to
// prevent a race condition between Furo's scrolling logic and the Mermaid
// diagram rendering logic.
if (window.mermaid) {
// https://mermaid.js.org/config/usage.html#using-mermaid-run
window.mermaid.run();
}
window.pigweed.scrollSiteNav();
});
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