Commit 20bfc4f6 authored by Phil Hughes's avatar Phil Hughes

added mouseleave timeout with JS

parent f20a4849
let hideTimeoutInterval = 0;
let hideTimeout;
let subitems;
export const getHideTimeoutInterval = () => hideTimeoutInterval;
export const hideAllSubItems = () => {
subitems.forEach((el) => {
el.parentNode.classList.remove('is-over');
el.style.display = 'none'; // eslint-disable-line no-param-reassign
});
};
export const calculateTop = (boundingRect, outerHeight) => { export const calculateTop = (boundingRect, outerHeight) => {
const windowHeight = window.innerHeight; const windowHeight = window.innerHeight;
const bottomOverflow = windowHeight - (boundingRect.top + outerHeight); const bottomOverflow = windowHeight - (boundingRect.top + outerHeight);
...@@ -6,23 +19,64 @@ export const calculateTop = (boundingRect, outerHeight) => { ...@@ -6,23 +19,64 @@ export const calculateTop = (boundingRect, outerHeight) => {
boundingRect.top; boundingRect.top;
}; };
export const showSubLevelItems = (el) => {
const $subitems = el.querySelector('.sidebar-sub-level-items');
if (!$subitems) return;
hideAllSubItems();
if (el.classList.contains('is-over')) {
clearTimeout(hideTimeout);
} else {
$subitems.style.display = 'block';
el.classList.add('is-over');
}
const boundingRect = el.getBoundingClientRect();
const top = calculateTop(boundingRect, $subitems.offsetHeight);
const isAbove = top < boundingRect.top;
$subitems.style.transform = `translate3d(0, ${top}px, 0)`;
if (isAbove) {
$subitems.classList.add('is-above');
}
};
export const hideSubLevelItems = (el) => {
const $subitems = el.querySelector('.sidebar-sub-level-items');
const hideFn = () => {
el.classList.remove('is-over');
$subitems.style.display = 'none';
$subitems.classList.remove('is-above');
hideTimeoutInterval = 0;
};
if ($subitems && hideTimeoutInterval) {
hideTimeout = setTimeout(hideFn, hideTimeoutInterval);
} else if ($subitems) {
hideFn();
}
};
export const setMouseOutTimeout = (el) => {
if (el.closest('.sidebar-sub-level-items')) {
hideTimeoutInterval = 250;
} else {
hideTimeoutInterval = 0;
}
};
export default () => { export default () => {
$('.sidebar-top-level-items > li:not(.active)').on('mouseover', (e) => { const items = [...document.querySelectorAll('.sidebar-top-level-items > li:not(.active)')];
const $this = e.currentTarget; subitems = [...document.querySelectorAll('.sidebar-top-level-items > li:not(.active) .sidebar-sub-level-items')];
const $subitems = $('.sidebar-sub-level-items', $this).show();
items.forEach((el) => {
if ($subitems.length) { el.addEventListener('mouseenter', e => showSubLevelItems(e.currentTarget));
const boundingRect = $this.getBoundingClientRect(); el.addEventListener('mouseleave', e => hideSubLevelItems(e.currentTarget));
const top = calculateTop(boundingRect, $subitems.outerHeight()); });
const isAbove = top < boundingRect.top;
subitems.forEach(el => el.addEventListener('mouseleave', e => setMouseOutTimeout(e.target)));
$subitems.css({
transform: `translate3d(0, ${top}px, 0)`,
});
if (isAbove) {
$subitems.addClass('is-above');
}
}
}).on('mouseout', e => $('.sidebar-sub-level-items', e.currentTarget).hide().removeClass('is-above'));
}; };
...@@ -292,7 +292,8 @@ $new-sidebar-width: 220px; ...@@ -292,7 +292,8 @@ $new-sidebar-width: 220px;
} }
&:not(.active):hover > a, &:not(.active):hover > a,
> a:hover { > a:hover,
&.is-over > a {
background-color: $white-light; background-color: $white-light;
} }
} }
......
import { calculateTop } from '~/fly_out_nav'; import {
calculateTop,
setMouseOutTimeout,
getHideTimeoutInterval,
hideSubLevelItems,
showSubLevelItems,
} from '~/fly_out_nav';
describe('Fly out sidebar navigation', () => { describe('Fly out sidebar navigation', () => {
let el;
beforeEach(() => {
el = document.createElement('div');
document.body.appendChild(el);
});
afterEach(() => {
el.remove();
});
describe('calculateTop', () => { describe('calculateTop', () => {
it('returns boundingRect top', () => { it('returns boundingRect top', () => {
const boundingRect = { const boundingRect = {
...@@ -24,4 +40,119 @@ describe('Fly out sidebar navigation', () => { ...@@ -24,4 +40,119 @@ describe('Fly out sidebar navigation', () => {
).toBe(window.innerHeight - 50); ).toBe(window.innerHeight - 50);
}); });
}); });
describe('setMouseOutTimeout', () => {
it('sets hideTimeoutInterval to 150 when inside sub items', () => {
el.innerHTML = '<div class="sidebar-sub-level-items"><div class="js-test"></div></div>';
setMouseOutTimeout(el.querySelector('.js-test'));
expect(
getHideTimeoutInterval(),
).toBe(150);
});
it('resets hideTimeoutInterval when not inside sub items', () => {
setMouseOutTimeout(el);
expect(
getHideTimeoutInterval(),
).toBe(0);
});
});
describe('hideSubLevelItems', () => {
beforeEach(() => {
el.innerHTML = '<div class="sidebar-sub-level-items"></div>';
});
it('hides subitems', () => {
hideSubLevelItems(el);
expect(
el.querySelector('.sidebar-sub-level-items').style.display,
).toBe('none');
});
it('removes is-over class', () => {
spyOn(el.classList, 'remove');
hideSubLevelItems(el);
expect(
el.classList.remove,
).toHaveBeenCalledWith('is-over');
});
it('removes is-above class from sub-items', () => {
const subItems = el.querySelector('.sidebar-sub-level-items');
spyOn(subItems.classList, 'remove');
hideSubLevelItems(el);
expect(
subItems.classList.remove,
).toHaveBeenCalledWith('is-above');
});
it('does nothing if el has no sub-items', () => {
el.innerHTML = '';
spyOn(el.classList, 'remove');
hideSubLevelItems(el);
expect(
el.classList.remove,
).not.toHaveBeenCalledWith();
});
});
describe('showSubLevelItems', () => {
beforeEach(() => {
el.innerHTML = '<div class="sidebar-sub-level-items"></div>';
});
it('adds is-over class to el', () => {
spyOn(el.classList, 'add');
showSubLevelItems(el);
expect(
el.classList.add,
).toHaveBeenCalledWith('is-over');
});
it('shows sub-items', () => {
showSubLevelItems(el);
expect(
el.querySelector('.sidebar-sub-level-items').style.display,
).toBe('block');
});
it('sets transform of sub-items', () => {
showSubLevelItems(el);
expect(
el.querySelector('.sidebar-sub-level-items').style.transform,
).toBe(`translate3d(0px, ${el.offsetTop}px, 0px)`);
});
it('sets is-above when element is above', () => {
const subItems = el.querySelector('.sidebar-sub-level-items');
subItems.style.height = '5000px';
el.style.position = 'relative';
el.style.top = '1000px';
spyOn(el.classList, 'add');
showSubLevelItems(el);
expect(
el.classList.add,
).toHaveBeenCalledWith('is-above');
});
});
}); });
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