45 lines
1.7 KiB
JavaScript
45 lines
1.7 KiB
JavaScript
function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }
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import getOffsetParent from './getOffsetParent';
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import getOffset from './getOffset';
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import { getStyle } from '../style';
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import scrollTop from './scrollTop';
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import scrollLeft from './scrollLeft';
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import nodeName from './nodeName';
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export default (function (node, offsetParent) {
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var parentOffset = {
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top: 0,
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left: 0
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};
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var offset = null; // Fixed elements are offset from window (parentOffset = {top:0, left: 0},
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// because it is its only offset parent
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if (getStyle(node, 'position') === 'fixed') {
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offset = node.getBoundingClientRect();
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} else {
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offsetParent = offsetParent || getOffsetParent(node);
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offset = getOffset(node);
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if (nodeName(offsetParent) !== 'html') {
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var nextParentOffset = getOffset(offsetParent);
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if (nextParentOffset) {
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parentOffset.top = nextParentOffset.top;
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parentOffset.left = nextParentOffset.left;
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}
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}
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parentOffset.top += parseInt(getStyle(offsetParent, 'borderTopWidth'), 10) - scrollTop(offsetParent) || 0;
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parentOffset.left += parseInt(getStyle(offsetParent, 'borderLeftWidth'), 10) - scrollLeft(offsetParent) || 0;
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} // Subtract parent offsets and node margins
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if (offset) {
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return _extends({}, offset, {
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top: offset.top - parentOffset.top - (parseInt(getStyle(node, 'marginTop'), 10) || 0),
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left: offset.left - parentOffset.left - (parseInt(getStyle(node, 'marginLeft'), 10) || 0)
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});
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}
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return null;
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}); |