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