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Add dynamic navigation tunnel to fly-out menus

This commit is contained in:
Phil Hughes 2017-08-04 15:32:44 +01:00
parent 9419d10e86
commit 640cbb00e3
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GPG Key ID: DB8CE4B3A3EE91AB
3 changed files with 253 additions and 75 deletions
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137
app/assets/javascripts/fly_out_nav.js
View File

@ -1,6 +1,19 @@
import Cookies from 'js-cookie';
import bp from './breakpoints';
const IS_OVER_CLASS = 'is-over';
const IS_ABOVE_CLASS = 'is-above';
const IS_SHOWING_FLY_OUT_CLASS = 'is-showing-fly-out';
let currentOpenMenu = null;
let menuCornerLocs;
let timeoutId;
export const mousePos = [];
export const setOpenMenu = (menu) => { currentOpenMenu = menu; };
export const slope = (a, b) => (b.y - a.y) / (b.x - a.x);
export const canShowActiveSubItems = (el) => {
const isHiddenByMedia = bp.getBreakpointSize() === 'sm' || bp.getBreakpointSize() === 'md';
@ -10,8 +23,28 @@ export const canShowActiveSubItems = (el) => {
return true;
};
export const canShowSubItems = () => bp.getBreakpointSize() === 'sm' || bp.getBreakpointSize() === 'md' || bp.getBreakpointSize() === 'lg';
export const getHideSubItemsInterval = () => {
if (!currentOpenMenu) return 0;
const currentMousePos = mousePos[mousePos.length - 1];
const prevMousePos = mousePos[0];
const currentMousePosY = currentMousePos.y;
const [menuTop, menuBottom] = menuCornerLocs;
if (currentMousePosY < menuTop.y ||
currentMousePosY > menuBottom.y) return 0;
if (slope(prevMousePos, menuBottom) < slope(currentMousePos, menuBottom) &&
slope(prevMousePos, menuTop) > slope(currentMousePos, menuTop)) {
return 300;
}
return 0;
};
export const calculateTop = (boundingRect, outerHeight) => {
const windowHeight = window.innerHeight;
const bottomOverflow = windowHeight - (boundingRect.top + outerHeight);
@ -20,45 +53,111 @@ export const calculateTop = (boundingRect, outerHeight) => {
boundingRect.top;
};
export const showSubLevelItems = (el) => {
const subItems = el.querySelector('.sidebar-sub-level-items');
export const hideMenu = (el) => {
if (!el) return;
if (!subItems || !canShowSubItems() || !canShowActiveSubItems(el)) return;
const parentEl = el.parentNode;
subItems.style.display = 'block';
el.classList.add('is-showing-fly-out');
el.classList.add('is-over');
el.style.display = ''; // eslint-disable-line no-param-reassign
el.style.transform = ''; // eslint-disable-line no-param-reassign
el.classList.remove(IS_ABOVE_CLASS);
parentEl.classList.remove(IS_OVER_CLASS);
parentEl.classList.remove(IS_SHOWING_FLY_OUT_CLASS);
setOpenMenu(null);
};
export const moveSubItemsToPosition = (el, subItems) => {
const boundingRect = el.getBoundingClientRect();
const top = calculateTop(boundingRect, subItems.offsetHeight);
const isAbove = top < boundingRect.top;
subItems.classList.add('fly-out-list');
subItems.style.transform = `translate3d(0, ${Math.floor(top)}px, 0)`;
subItems.style.transform = `translate3d(0, ${Math.floor(top)}px, 0)`; // eslint-disable-line no-param-reassign
const subItemsRect = subItems.getBoundingClientRect();
menuCornerLocs = [
{
x: subItemsRect.left, // left position of the sub items
y: subItemsRect.top, // top position of the sub items
},
{
x: subItemsRect.left, // left position of the sub items
y: subItemsRect.top + subItemsRect.height, // bottom position of the sub items
},
];
if (isAbove) {
subItems.classList.add('is-above');
subItems.classList.add(IS_ABOVE_CLASS);
}
};
export const hideSubLevelItems = (el) => {
export const showSubLevelItems = (el) => {
const subItems = el.querySelector('.sidebar-sub-level-items');
if (!subItems || !canShowSubItems() || !canShowActiveSubItems(el)) return;
if (!canShowSubItems() || !canShowActiveSubItems(el)) return;
el.classList.remove('is-showing-fly-out');
el.classList.remove('is-over');
subItems.style.display = '';
subItems.style.transform = '';
subItems.classList.remove('is-above');
el.classList.add(IS_OVER_CLASS);
if (!subItems) return;
subItems.style.display = 'block';
el.classList.add(IS_SHOWING_FLY_OUT_CLASS);
setOpenMenu(subItems);
moveSubItemsToPosition(el, subItems);
};
export const mouseEnterTopItems = (el) => {
clearTimeout(timeoutId);
timeoutId = setTimeout(() => {
if (currentOpenMenu) hideMenu(currentOpenMenu);
showSubLevelItems(el);
}, getHideSubItemsInterval());
};
export const mouseLeaveTopItem = (el) => {
const subItems = el.querySelector('.sidebar-sub-level-items');
if (!canShowSubItems() || !canShowActiveSubItems(el) || (subItems && subItems === currentOpenMenu)) return;
el.classList.remove(IS_OVER_CLASS);
};
export const documentMouseMove = (e) => {
mousePos.push({ x: e.clientX, y: e.clientY });
if (mousePos.length > 6) mousePos.shift();
};
export default () => {
const items = [...document.querySelectorAll('.sidebar-top-level-items > li')]
.filter(el => el.querySelector('.sidebar-sub-level-items'));
const sidebar = document.querySelector('.sidebar-top-level-items');
const items = [...sidebar.querySelectorAll('.sidebar-top-level-items > li')];
sidebar.addEventListener('mouseleave', () => {
clearTimeout(timeoutId);
timeoutId = setTimeout(() => {
if (currentOpenMenu) hideMenu(currentOpenMenu);
}, getHideSubItemsInterval());
});
items.forEach((el) => {
el.addEventListener('mouseenter', e => showSubLevelItems(e.currentTarget));
el.addEventListener('mouseleave', e => hideSubLevelItems(e.currentTarget));
const subItems = el.querySelector('.sidebar-sub-level-items');
if (subItems) {
subItems.addEventListener('mouseleave', () => {
clearTimeout(timeoutId);
hideMenu(currentOpenMenu);
});
}
el.addEventListener('mouseenter', e => mouseEnterTopItems(e.currentTarget));
el.addEventListener('mouseleave', e => mouseLeaveTopItem(e.currentTarget));
});
document.addEventListener('mousemove', documentMouseMove);
};

24
app/assets/stylesheets/new_sidebar.scss
View File

@ -250,32 +250,13 @@ $new-sidebar-collapsed-width: 50px;
position: absolute;
top: -30px;
bottom: -30px;
left: 0;
left: -10px;
right: -30px;
z-index: -1;
}
&::after {
content: "";
position: absolute;
top: 44px;
left: -30px;
right: 35px;
bottom: 0;
height: 100%;
max-height: 150px;
z-index: -1;
transform: skew(33deg);
}
&.is-above {
margin-top: 1px;
&::after {
top: auto;
bottom: 44px;
transform: skew(-30deg);
}
}
> .active {
@ -322,8 +303,7 @@ $new-sidebar-collapsed-width: 50px;
}
}
&:not(.active):hover > a,
> a:hover,
&.active > a:hover,
&.is-over > a {
background-color: $white-light;
}

167
spec/javascripts/fly_out_nav_spec.js
View File

@ -1,14 +1,19 @@
import Cookies from 'js-cookie';
import {
calculateTop,
hideSubLevelItems,
showSubLevelItems,
canShowSubItems,
canShowActiveSubItems,
mouseEnterTopItems,
mouseLeaveTopItem,
setOpenMenu,
mousePos,
getHideSubItemsInterval,
documentMouseMove,
} from '~/fly_out_nav';
import bp from '~/breakpoints';
describe('Fly out sidebar navigation', () => {
fdescribe('Fly out sidebar navigation', () => {
let el;
let breakpointSize = 'lg';
@ -18,11 +23,14 @@ describe('Fly out sidebar navigation', () => {
document.body.appendChild(el);
spyOn(bp, 'getBreakpointSize').and.callFake(() => breakpointSize);
setOpenMenu(null);
});
afterEach(() => {
el.remove();
breakpointSize = 'lg';
mousePos.length = 0;
});
describe('calculateTop', () => {
@ -49,61 +57,152 @@ describe('Fly out sidebar navigation', () => {
});
});
describe('hideSubLevelItems', () => {
describe('getHideSubItemsInterval', () => {
beforeEach(() => {
el.innerHTML = '<div class="sidebar-sub-level-items"></div>';
el.innerHTML = '<div class="sidebar-sub-level-items" style="position: absolute; top: 0; left: 100px; height: 200px;"></div>';
});
it('hides subitems', () => {
hideSubLevelItems(el);
it('returns 0 if currentOpenMenu is nil', () => {
expect(
getHideSubItemsInterval(),
).toBe(0);
});
it('returns 0 when mouse above sub-items', () => {
showSubLevelItems(el);
documentMouseMove({
clientX: el.getBoundingClientRect().left,
clientY: el.getBoundingClientRect().top,
});
documentMouseMove({
clientX: el.getBoundingClientRect().left,
clientY: el.getBoundingClientRect().top - 50,
});
expect(
el.querySelector('.sidebar-sub-level-items').style.display,
).toBe('');
getHideSubItemsInterval(),
).toBe(0);
});
it('does not hude subitems on mobile', () => {
breakpointSize = 'xs';
it('returns 0 when mouse is below sub-items', () => {
const subItems = el.querySelector('.sidebar-sub-level-items');
hideSubLevelItems(el);
showSubLevelItems(el);
documentMouseMove({
clientX: el.getBoundingClientRect().left,
clientY: el.getBoundingClientRect().top,
});
documentMouseMove({
clientX: el.getBoundingClientRect().left,
clientY: (el.getBoundingClientRect().top - subItems.getBoundingClientRect().height) + 50,
});
expect(
el.querySelector('.sidebar-sub-level-items').style.display,
).not.toBe('none');
getHideSubItemsInterval(),
).toBe(0);
});
it('removes is-over class', () => {
it('returns 300 when mouse is moved towards sub-items', () => {
documentMouseMove({
clientX: el.getBoundingClientRect().left,
clientY: el.getBoundingClientRect().top,
});
showSubLevelItems(el);
documentMouseMove({
clientX: el.getBoundingClientRect().left + 20,
clientY: el.getBoundingClientRect().top + 10,
});
expect(
getHideSubItemsInterval(),
).toBe(300);
});
});
describe('mouseLeaveTopItem', () => {
beforeEach(() => {
spyOn(el.classList, 'remove');
});
hideSubLevelItems(el);
it('removes is-over class if currentOpenMenu is null', () => {
mouseLeaveTopItem(el);
expect(
el.classList.remove,
).toHaveBeenCalledWith('is-over');
});
it('removes is-above class from sub-items', () => {
const subItems = el.querySelector('.sidebar-sub-level-items');
it('removes is-over class if currentOpenMenu is null & there are sub-items', () => {
el.innerHTML = '<div class="sidebar-sub-level-items" style="position: absolute;"></div>';
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);
mouseLeaveTopItem(el);
expect(
el.classList.remove,
).not.toHaveBeenCalledWith();
).toHaveBeenCalledWith('is-over');
});
it('does not remove is-over class if currentOpenMenu is the passed in sub-items', () => {
el.innerHTML = '<div class="sidebar-sub-level-items" style="position: absolute;"></div>';
setOpenMenu(el.querySelector('.sidebar-sub-level-items'));
mouseLeaveTopItem(el);
expect(
el.classList.remove,
).not.toHaveBeenCalled();
});
});
describe('mouseEnterTopItems', () => {
beforeEach(() => {
jasmine.clock().install();
el.innerHTML = '<div class="sidebar-sub-level-items" style="position: absolute; top: 0; left: 100px; height: 200px;"></div>';
});
afterEach(() => {
jasmine.clock().uninstall();
});
it('shows sub-items after 0ms if no menu is open', () => {
mouseEnterTopItems(el);
expect(
getHideSubItemsInterval(),
).toBe(0);
jasmine.clock().tick(0);
expect(
el.querySelector('.sidebar-sub-level-items').style.display,
).toBe('block');
});
it('shows sub-items after 300ms if a menu is currently open', () => {
documentMouseMove({
clientX: el.getBoundingClientRect().left,
clientY: el.getBoundingClientRect().top,
});
setOpenMenu(el.querySelector('.sidebar-sub-level-items'));
documentMouseMove({
clientX: el.getBoundingClientRect().left + 20,
clientY: el.getBoundingClientRect().top + 10,
});
mouseEnterTopItems(el);
expect(
getHideSubItemsInterval(),
).toBe(300);
jasmine.clock().tick(300);
expect(
el.querySelector('.sidebar-sub-level-items').style.display,
).toBe('block');
});
});
@ -132,7 +231,7 @@ describe('Fly out sidebar navigation', () => {
).not.toBe('block');
});
it('does not shows sub-items', () => {
it('shows sub-items', () => {
showSubLevelItems(el);
expect(