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a970f0bdc3
Find an element's offset, then add it to the offset of the parent until we are at the direct child of parentEl. Use-case: find scroll offset of any element within a scroll container
41 lines
1.2 KiB
JavaScript
41 lines
1.2 KiB
JavaScript
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describe('js/utils/dom', function() {
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describe('getPositionInParent', function() {
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it('should return 0,0 if el===parentEl', function() {
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var el = {};
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expect(ionic.DomUtil.getPositionInParent(el, el)).toEqual({
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left: 0,
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top: 0
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});
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});
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it('should return 0,0 if el is null', function() {
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expect(ionic.DomUtil.getPositionInParent(null, null)).toEqual({
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left: 0,
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top: 0
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});
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});
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it('should return element offset{Top,Left} of el if el is parent\'s child', function() {
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var parent = {};
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var el = {parentNode: parent, offsetLeft: 3, offsetTop: 2};
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expect(ionic.DomUtil.getPositionInParent(el, parent)).toEqual({
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left: 3,
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top: 2
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});
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});
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it('should return added element offset{Top,Left} of all children up to parent', function() {
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var parent = {};
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var child1 = {parentNode: parent, offsetLeft: 5, offsetTop: 6};
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var child2 = {parentNode: child1, offsetLeft: 10, offsetTop: 11};
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expect(ionic.DomUtil.getPositionInParent(child1, parent)).toEqual({
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left: 5,
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top: 6
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});
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expect(ionic.DomUtil.getPositionInParent(child2, parent)).toEqual({
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left: 15,
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top: 17
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});
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});
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});
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});
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