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When a URL hash refers to a hidden element, it makes the element visible

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This commit is contained in:
Guillaume Gomez 2019-11-05 17:41:40 +01:00
parent e4931eaaa3
commit f66a331335
1 changed files with 52 additions and 11 deletions
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63
src/librustdoc/html/static/main.js
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@ -161,17 +161,18 @@ function getSearchElement() {
return window.history && typeof window.history.pushState === "function";
}
var main = document.getElementById("main");
function isHidden(elem) {
return elem.offsetHeight === 0;
}
function onHashChange(ev) {
// If we're in mobile mode, we should hide the sidebar in any case.
hideSidebar();
var match = window.location.hash.match(/^#?(\d+)(?:-(\d+))?$/);
if (match) {
return highlightSourceLines(match, ev);
}
var main = document.getElementById("main");
var savedHash = "";
function handleHashes(ev) {
var search = getSearchElement();
if (ev !== null && search && !hasClass(search, "hidden") && ev.newURL) {
// This block occurs when clicking on an element in the navbar while
// in a search.
addClass(search, "hidden");
removeClass(main, "hidden");
var hash = ev.newURL.slice(ev.newURL.indexOf("#") + 1);
@ -183,6 +184,35 @@ function getSearchElement() {
elem.scrollIntoView();
}
}
// This part is used in case an element is not visible.
if (savedHash !== window.location.hash) {
savedHash = window.location.hash;
if (savedHash.length === 0) {
return;
}
var elem = document.getElementById(savedHash.slice(1)); // we remove the '#'
if (!elem || !isHidden(elem)) {
return;
}
var parent = elem.parentNode;
if (parent && hasClass(parent, "impl-items")) {
// In case this is a trait implementation item, we first need to toggle
// the "Show hidden undocumented items".
onEachLazy(parent.getElementsByClassName("collapsed"), function(e) {
if (e.parentNode === parent) {
// Only click on the toggle we're looking for.
e.click();
return true;
}
});
if (isHidden(elem)) {
// The whole parent is collapsed. We need to click on its toggle as well!
if (hasClass(parent.lastElementChild, "collapse-toggle")) {
parent.lastElementChild.click();
}
}
}
}
}
function highlightSourceLines(match, ev) {
@ -228,6 +258,16 @@ function getSearchElement() {
}
}
function onHashChange(ev) {
// If we're in mobile mode, we should hide the sidebar in any case.
hideSidebar();
var match = window.location.hash.match(/^#?(\d+)(?:-(\d+))?$/);
if (match) {
return highlightSourceLines(match, ev);
}
handleHashes();
}
function expandSection(id) {
var elem = document.getElementById(id);
if (elem && isHidden(elem)) {
@ -246,9 +286,6 @@ function getSearchElement() {
}
}
highlightSourceLines();
window.onhashchange = onHashChange;
// Gets the human-readable string for the virtual-key code of the
// given KeyboardEvent, ev.
//
@ -2615,6 +2652,10 @@ function getSearchElement() {
insertAfter(popup, getSearchElement());
}
handleHashes();
highlightSourceLines();
window.onhashchange = onHashChange;
buildHelperPopup();
}());