2a09d1a4
 liuqimichale
添加宜春 天水 宣化
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'use strict';
exports.__esModule = true;
exports.default = scrollIntoView;
var _vue = require('vue');
var _vue2 = _interopRequireDefault(_vue);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function scrollIntoView(container, selected) {
if (_vue2.default.prototype.$isServer) return;
if (!selected) {
container.scrollTop = 0;
return;
}
var offsetParents = [];
var pointer = selected.offsetParent;
while (pointer && container !== pointer && container.contains(pointer)) {
offsetParents.push(pointer);
pointer = pointer.offsetParent;
}
var top = selected.offsetTop + offsetParents.reduce(function (prev, curr) {
return prev + curr.offsetTop;
}, 0);
var bottom = top + selected.offsetHeight;
var viewRectTop = container.scrollTop;
var viewRectBottom = viewRectTop + container.clientHeight;
if (top < viewRectTop) {
container.scrollTop = top;
} else if (bottom > viewRectBottom) {
container.scrollTop = bottom - container.clientHeight;
}
}
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