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/*
* Copyright 2014-2023 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
*/
// helps with some corner cases where <wbr> starts working already,
// but the signature is not yet long enough to be wrapped
(function() {
const leftPaddingPx = 60;
function createNbspIndent() {
let indent = document.createElement("span");
indent.append(document.createTextNode("\u00A0\u00A0\u00A0\u00A0"));
indent.classList.add("nbsp-indent");
return indent;
}
function wrapSymbolParameters(entry) {
const symbol = entry.target;
const symbolBlockWidth = entry.borderBoxSize && entry.borderBoxSize[0] && entry.borderBoxSize[0].inlineSize;
// Even though the script is marked as `defer` and we wait for `DOMContentLoaded` event,
// or if this block is a part of hidden tab, it can happen that `symbolBlockWidth` is 0,
// indicating that something hasn't been loaded.
// In this case, observer will be triggered onсe again when it will be ready.
if (symbolBlockWidth > 0) {
const node = symbol.querySelector(".parameters");
if (node) {
// if window resize happened and observer was triggered, reset previously wrapped
// parameters as they might not need wrapping anymore, and check again
node.classList.remove("wrapped");
node.querySelectorAll(".parameter .nbsp-indent")
.forEach(indent => indent.remove());
const innerTextWidth = Array.from(symbol.children)
.filter(it => !it.classList.contains("block")) // blocks are usually on their own (like annotations), so ignore it
.map(it => it.getBoundingClientRect().width)
.reduce((a, b) => a + b, 0);
// if signature text takes up more than a single line, wrap params for readability
if (innerTextWidth > (symbolBlockWidth - leftPaddingPx)) {
node.classList.add("wrapped");
node.querySelectorAll(".parameter").forEach(param => {
// has to be a physical indent so that it can be copied. styles like
// paddings and `::before { content: " " }` do not work for that
param.prepend(createNbspIndent());
});
}
}
}
}
const symbolsObserver = new ResizeObserver(entries => entries.forEach(wrapSymbolParameters));
function initHandlers() {
document.querySelectorAll("div.symbol").forEach(symbol => symbolsObserver.observe(symbol));
}
if (document.readyState === 'loading') window.addEventListener('DOMContentLoaded', initHandlers);
else initHandlers();
// ToDo: Add `unobserve` if dokka will be SPA-like:
// https://github.com/w3c/csswg-drafts/issues/5155
})();
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