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Rollup merge of #66082 - GuillaumeGomez:cleanup-highlightsourcelines, r=kinnison

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clean highlightSourceLines code

This is the first part of https://github.com/rust-lang/rust/issues/66046. Now that I've splitted the hashchange stuff and the source code lines highlighting, I'll be able to fix the whole issue once and for all.

r? @kinnison
This commit is contained in:
Pietro Albini 2019-11-05 14:37:07 +01:00 committed by GitHub
commit 63e5ed3fdc
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1 changed files with 54 additions and 42 deletions
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96
src/librustdoc/html/static/main.js
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@ -163,59 +163,71 @@ function getSearchElement() {
var main = document.getElementById("main");
function highlightSourceLines(ev) {
// If we're in mobile mode, we should add the sidebar in any case.
function onHashChange(ev) {
// If we're in mobile mode, we should hide the sidebar in any case.
hideSidebar();
var elem;
var search = getSearchElement();
var i, from, to, match = window.location.hash.match(/^#?(\d+)(?:-(\d+))?$/);
var match = window.location.hash.match(/^#?(\d+)(?:-(\d+))?$/);
if (match) {
from = parseInt(match[1], 10);
to = from;
if (typeof match[2] !== "undefined") {
to = parseInt(match[2], 10);
}
if (to < from) {
var tmp = to;
to = from;
from = tmp;
}
elem = document.getElementById(from);
if (!elem) {
return;
}
if (ev === null) {
var x = document.getElementById(from);
if (x) {
x.scrollIntoView();
}
}
onEachLazy(document.getElementsByClassName("line-numbers"), function(e) {
onEachLazy(e.getElementsByTagName("span"), function(i_e) {
removeClass(i_e, "line-highlighted");
});
});
for (i = from; i <= to; ++i) {
elem = document.getElementById(i);
if (!elem) {
break;
}
addClass(elem, "line-highlighted");
}
} else if (ev !== null && search && !hasClass(search, "hidden") && ev.newURL) {
return highlightSourceLines(match, ev);
}
var search = getSearchElement();
if (ev !== null && search && !hasClass(search, "hidden") && ev.newURL) {
addClass(search, "hidden");
removeClass(main, "hidden");
var hash = ev.newURL.slice(ev.newURL.indexOf("#") + 1);
if (browserSupportsHistoryApi()) {
history.replaceState(hash, "", "?search=#" + hash);
}
elem = document.getElementById(hash);
var elem = document.getElementById(hash);
if (elem) {
elem.scrollIntoView();
}
}
}
function highlightSourceLines(match, ev) {
if (typeof match === "undefined") {
// If we're in mobile mode, we should hide the sidebar in any case.
hideSidebar();
match = window.location.hash.match(/^#?(\d+)(?:-(\d+))?$/);
}
if (!match) {
return;
}
var from = parseInt(match[1], 10);
var to = from;
if (typeof match[2] !== "undefined") {
to = parseInt(match[2], 10);
}
if (to < from) {
var tmp = to;
to = from;
from = tmp;
}
var elem = document.getElementById(from);
if (!elem) {
return;
}
if (!ev) {
var x = document.getElementById(from);
if (x) {
x.scrollIntoView();
}
}
onEachLazy(document.getElementsByClassName("line-numbers"), function(e) {
onEachLazy(e.getElementsByTagName("span"), function(i_e) {
removeClass(i_e, "line-highlighted");
});
});
for (var i = from; i <= to; ++i) {
elem = document.getElementById(i);
if (!elem) {
break;
}
addClass(elem, "line-highlighted");
}
}
function expandSection(id) {
var elem = document.getElementById(id);
if (elem && isHidden(elem)) {
@ -234,8 +246,8 @@ function getSearchElement() {
}
}
highlightSourceLines(null);
window.onhashchange = highlightSourceLines;
highlightSourceLines();
window.onhashchange = onHashChange;
// Gets the human-readable string for the virtual-key code of the
// given KeyboardEvent, ev.
@ -358,7 +370,7 @@ function getSearchElement() {
var set_fragment = function(name) {
if (browserSupportsHistoryApi()) {
history.replaceState(null, null, "#" + name);
highlightSourceLines(null);
highlightSourceLines();
} else {
location.replace("#" + name);
}