collapse-transition.js
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'use strict';
exports.__esModule = true;
var _dom = require('element-ui/lib/utils/dom');
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var Transition = function () {
function Transition() {
_classCallCheck(this, Transition);
}
Transition.prototype.beforeEnter = function beforeEnter(el) {
(0, _dom.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;
};
Transition.prototype.enter = function 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';
};
Transition.prototype.afterEnter = function afterEnter(el) {
// for safari: remove class then reset height is necessary
(0, _dom.removeClass)(el, 'collapse-transition');
el.style.height = '';
el.style.overflow = el.dataset.oldOverflow;
};
Transition.prototype.beforeLeave = function 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';
};
Transition.prototype.leave = function leave(el) {
if (el.scrollHeight !== 0) {
// for safari: add class after set height, or it will jump to zero height suddenly, weired
(0, _dom.addClass)(el, 'collapse-transition');
el.style.height = 0;
el.style.paddingTop = 0;
el.style.paddingBottom = 0;
}
};
Transition.prototype.afterLeave = function afterLeave(el) {
(0, _dom.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;
};
return Transition;
}();
exports.default = {
name: 'ElCollapseTransition',
functional: true,
render: function render(h, _ref) {
var children = _ref.children;
var data = {
on: new Transition()
};
return h('transition', data, children);
}
};