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Only build help popup when it's really needed

This commit is contained in:
Guillaume Gomez 2020-12-12 23:32:44 +01:00
parent b97fd3e5a1
commit 1491496eb0
1 changed files with 19 additions and 12 deletions
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31
src/librustdoc/html/static/main.js
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@ -374,28 +374,35 @@ function defocusSearchBar() {
}
}
function getHelpElement() {
buildHelperPopup();
function getHelpElement(build) {
if (build !== false) {
buildHelperPopup();
}
return document.getElementById("help");
}
function displayHelp(display, ev, help) {
help = help ? help : getHelpElement();
if (display === true) {
help = help ? help : getHelpElement(true);
if (hasClass(help, "hidden")) {
ev.preventDefault();
removeClass(help, "hidden");
addClass(document.body, "blur");
}
} else if (hasClass(help, "hidden") === false) {
ev.preventDefault();
addClass(help, "hidden");
removeClass(document.body, "blur");
} else {
// No need to build the help popup if we want to hide it in case it hasn't been
// built yet...
help = help ? help : getHelpElement(false);
if (help && hasClass(help, "hidden") === false) {
ev.preventDefault();
addClass(help, "hidden");
removeClass(document.body, "blur");
}
}
}
function handleEscape(ev) {
var help = getHelpElement();
var help = getHelpElement(false);
var search = getSearchElement();
if (hasClass(help, "hidden") === false) {
displayHelp(false, ev, help);
@ -558,6 +565,7 @@ function defocusSearchBar() {
}());
document.addEventListener("click", function(ev) {
var helpElem = getHelpElement(false);
if (hasClass(ev.target, "help-button")) {
displayHelp(true, ev);
} else if (hasClass(ev.target, "collapse-toggle")) {
@ -566,11 +574,10 @@ function defocusSearchBar() {
collapseDocs(ev.target.parentNode, "toggle");
} else if (ev.target.tagName === "SPAN" && hasClass(ev.target.parentNode, "line-numbers")) {
handleSourceHighlight(ev);
} else if (hasClass(getHelpElement(), "hidden") === false) {
var help = getHelpElement();
var is_inside_help_popup = ev.target !== help && help.contains(ev.target);
} else if (helpElem && hasClass(helpElem, "hidden") === false) {
var is_inside_help_popup = ev.target !== helpElem && helpElem.contains(ev.target);
if (is_inside_help_popup === false) {
addClass(help, "hidden");
addClass(helpElem, "hidden");
removeClass(document.body, "blur");
}
} else {