fork-reap-design
Version:
A high quality UI components Library with Vue.js
135 lines (115 loc) • 3.46 kB
JavaScript
/* istanbul ignore next */
const trim = string => (string || '').replace(/^[\s\uFEFF]+|[\s\uFEFF]+$/g, '');
/* istanbul ignore next */
const hasClass = (el, cls) => {
if (!el || !cls) return false;
if (cls.indexOf(' ') !== -1) throw new Error('className should not contain space.');
if (el.classList) {
return el.classList.contains(cls);
}
return ` ${el.className} `.indexOf(` ${cls} `) > -1;
};
/* istanbul ignore next */
const addClass = (el, cls) => {
if (!el) return;
let curClass = el.className;
const classes = (cls || '').split(' ');
for (let i = 0, j = classes.length; i < j; i++) {
const clsName = classes[i];
if (!clsName) continue;
if (el.classList) {
el.classList.add(clsName);
} else {
if (!hasClass(el, clsName)) {
curClass += ` ${clsName}`;
}
}
}
if (!el.classList) {
el.className = curClass;
}
};
/* istanbul ignore next */
const removeClass = (el, cls) => {
if (!el || !cls) return;
const classes = cls.split(' ');
let curClass = ` ${el.className} `;
for (let i = 0, j = classes.length; i < j; i++) {
const clsName = classes[i];
if (!clsName) continue;
if (el.classList) {
el.classList.remove(clsName);
} else {
if (hasClass(el, clsName)) {
curClass = curClass.replace(` ${clsName} `, ' ');
}
}
}
if (!el.classList) {
el.className = trim(curClass);
}
};
const Transition = {
beforeEnter(el) {
addClass(el, 'collapse-transition');
if (!el.dataset) el.dataset = {};
el.dataset.oldPaddingTop = el.style.paddingTop;
el.dataset.oldPaddingBottom = el.style.paddingBottom;
el.style.height = '0';
el.style.paddingTop = 0;
el.style.paddingBottom = 0;
},
enter(el) {
el.dataset.oldOverflow = el.style.overflow;
if (el.scrollHeight !== 0) {
el.style.height = `${el.scrollHeight}px`;
el.style.paddingTop = el.dataset.oldPaddingTop;
el.style.paddingBottom = el.dataset.oldPaddingBottom;
} else {
el.style.height = '';
el.style.paddingTop = el.dataset.oldPaddingTop;
el.style.paddingBottom = el.dataset.oldPaddingBottom;
}
el.style.overflow = 'hidden';
},
afterEnter(el) {
// for safari: remove class then reset height is necessary
removeClass(el, 'collapse-transition');
el.style.height = '';
el.style.overflow = el.dataset.oldOverflow;
},
beforeLeave(el) {
if (!el.dataset) el.dataset = {};
el.dataset.oldPaddingTop = el.style.paddingTop;
el.dataset.oldPaddingBottom = el.style.paddingBottom;
el.dataset.oldOverflow = el.style.overflow;
el.style.height = `${el.scrollHeight}px`;
el.style.overflow = 'hidden';
},
leave(el) {
if (el.scrollHeight !== 0) {
// for safari: add class after set height, or it will jump to zero height suddenly, weired
addClass(el, 'collapse-transition');
el.style.height = 0;
el.style.paddingTop = 0;
el.style.paddingBottom = 0;
}
},
afterLeave(el) {
removeClass(el, 'collapse-transition');
el.style.height = '';
el.style.overflow = el.dataset.oldOverflow;
el.style.paddingTop = el.dataset.oldPaddingTop;
el.style.paddingBottom = el.dataset.oldPaddingBottom;
},
};
export default {
name: 'CollapseTransition',
functional: true,
render(h, { children }) {
const data = {
on: Transition,
};
return h('transition', data, children);
},
};