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Rollup merge of #66430 - dns2utf8:fix_code_selection_click_handler, r=GuillaumeGomez

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[doc] Fix the source code highlighting on source comments

The code would always forget the previous selection.

r? @GuillaumeGomez
This commit is contained in:
Mazdak Farrokhzad 2019-11-19 13:10:15 +01:00 committed by GitHub
commit 95b9766e0a
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 39 additions and 26 deletions
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65
src/librustdoc/html/static/main.js
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@ -396,38 +396,51 @@ function getSearchElement() {
document.onkeypress = handleShortcut;
document.onkeydown = handleShortcut;
var handleSourceHighlight = (function() {
var prev_line_id = 0;
var set_fragment = function(name) {
var x = window.scrollX,
y = window.scrollY;
if (browserSupportsHistoryApi()) {
history.replaceState(null, null, "#" + name);
highlightSourceLines();
} else {
location.replace("#" + name);
}
// Prevent jumps when selecting one or many lines
window.scrollTo(x, y);
};
return function(ev) {
var cur_line_id = parseInt(ev.target.id, 10);
ev.preventDefault();
if (ev.shiftKey && prev_line_id) {
// Swap selection if needed
if (prev_line_id > cur_line_id) {
var tmp = prev_line_id;
prev_line_id = cur_line_id;
cur_line_id = tmp;
}
set_fragment(prev_line_id + "-" + cur_line_id);
} else {
prev_line_id = cur_line_id;
set_fragment(cur_line_id);
}
}
})();
document.onclick = function(ev) {
if (hasClass(ev.target, "collapse-toggle")) {
collapseDocs(ev.target, "toggle");
} else if (hasClass(ev.target.parentNode, "collapse-toggle")) {
collapseDocs(ev.target.parentNode, "toggle");
} else if (ev.target.tagName === "SPAN" && hasClass(ev.target.parentNode, "line-numbers")) {
var prev_id = 0;
var set_fragment = function(name) {
if (browserSupportsHistoryApi()) {
history.replaceState(null, null, "#" + name);
highlightSourceLines();
} else {
location.replace("#" + name);
}
};
var cur_id = parseInt(ev.target.id, 10);
if (ev.shiftKey && prev_id) {
if (prev_id > cur_id) {
var tmp = prev_id;
prev_id = cur_id;
cur_id = tmp;
}
set_fragment(prev_id + "-" + cur_id);
} else {
prev_id = cur_id;
set_fragment(cur_id);
}
handleSourceHighlight(ev);
} else if (hasClass(getHelpElement(), "hidden") === false) {
var help = getHelpElement();
var is_inside_help_popup = ev.target !== help && help.contains(ev.target);