53 lines
1.8 KiB
JavaScript
53 lines
1.8 KiB
JavaScript
"use strict";
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var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
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exports.__esModule = true;
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exports.default = scrollTo;
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var _offset = _interopRequireDefault(require("../query/offset"));
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var _height = _interopRequireDefault(require("../query/height"));
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var _scrollParent = _interopRequireDefault(require("../query/scrollParent"));
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var _scrollTop = _interopRequireDefault(require("../query/scrollTop"));
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var _requestAnimationFrame = _interopRequireDefault(require("./requestAnimationFrame"));
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var _isWindow = _interopRequireDefault(require("../query/isWindow"));
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function scrollTo(selected, scrollParent) {
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var offset = (0, _offset.default)(selected);
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var poff = {
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top: 0,
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left: 0
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};
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var list, listScrollTop, selectedTop, isWin;
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var selectedHeight, listHeight, bottom;
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if (!selected) return;
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list = scrollParent || (0, _scrollParent.default)(selected);
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isWin = (0, _isWindow.default)(list);
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listScrollTop = (0, _scrollTop.default)(list);
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listHeight = (0, _height.default)(list, true);
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isWin = (0, _isWindow.default)(list);
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if (!isWin) poff = (0, _offset.default)(list);
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offset = {
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top: offset.top - poff.top,
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left: offset.left - poff.left,
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height: offset.height,
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width: offset.width
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};
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selectedHeight = offset.height;
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selectedTop = offset.top + (isWin ? 0 : listScrollTop);
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bottom = selectedTop + selectedHeight;
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listScrollTop = listScrollTop > selectedTop ? selectedTop : bottom > listScrollTop + listHeight ? bottom - listHeight : listScrollTop;
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var id = (0, _requestAnimationFrame.default)(function () {
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return (0, _scrollTop.default)(list, listScrollTop);
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});
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return function () {
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return _requestAnimationFrame.default.cancel(id);
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};
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}
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module.exports = exports["default"]; |