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| @license |
| Copyright (C) 2017 The Android Open Source Project |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
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| http://www.apache.org/licenses/LICENSE-2.0 |
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| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| |
| <meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes"> |
| <title>gr-fixed-panel</title> |
| |
| <script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script> |
| <script src="../../../bower_components/web-component-tester/browser.js"></script> |
| <link rel="import" href="../../../test/common-test-setup.html"/> |
| <link rel="import" href="gr-fixed-panel.html"> |
| |
| <script>void(0);</script> |
| |
| <test-fixture id="basic"> |
| <template> |
| <gr-fixed-panel> |
| <div style="height: 100px"></div> |
| </gr-fixed-panel> |
| </template> |
| </test-fixture> |
| |
| <script> |
| suite('gr-fixed-panel', () => { |
| let element; |
| let sandbox; |
| |
| setup(() => { |
| sandbox = sinon.sandbox.create(); |
| element = fixture('basic'); |
| element.readyForMeasure = true; |
| }); |
| |
| teardown(() => { |
| sandbox.restore(); |
| }); |
| |
| test('can be disabled with floatingDisabled', () => { |
| element.floatingDisabled = true; |
| sandbox.stub(element, '_reposition'); |
| window.dispatchEvent(new CustomEvent('resize')); |
| element.flushDebouncer('update'); |
| assert.isFalse(element._reposition.called); |
| }); |
| |
| test('header is the height of the content', () => { |
| assert.equal(element.getBoundingClientRect().height, 100); |
| }); |
| |
| test('scroll triggers _reposition', () => { |
| sandbox.stub(element, '_reposition'); |
| window.dispatchEvent(new CustomEvent('scroll')); |
| element.flushDebouncer('update'); |
| assert.isTrue(element._reposition.called); |
| }); |
| |
| suite('_reposition', () => { |
| const getHeaderTop = function() { |
| return element.$.header.style.top; |
| }; |
| |
| const emulateScrollY = function(distance) { |
| element._getElementTop.returns(element._headerTopInitial - distance); |
| element._updateDebounced(); |
| element.flushDebouncer('scroll'); |
| }; |
| |
| setup(() => { |
| element._headerTopInitial = 10; |
| sandbox.stub(element, '_getElementTop') |
| .returns(element._headerTopInitial); |
| }); |
| |
| test('scrolls header along with document', () => { |
| emulateScrollY(20); |
| // No top property is set when !_headerFloating. |
| assert.equal(getHeaderTop(), ''); |
| }); |
| |
| test('does not stick to the top by default', () => { |
| emulateScrollY(150); |
| // No top property is set when !_headerFloating. |
| assert.equal(getHeaderTop(), ''); |
| }); |
| |
| test('sticks to the top if enabled', () => { |
| element.keepOnScroll = true; |
| emulateScrollY(120); |
| assert.equal(getHeaderTop(), '0px'); |
| }); |
| |
| test('drops a shadow when fixed to the top', () => { |
| element.keepOnScroll = true; |
| emulateScrollY(5); |
| assert.isFalse(element.$.header.classList.contains('fixedAtTop')); |
| emulateScrollY(120); |
| assert.isTrue(element.$.header.classList.contains('fixedAtTop')); |
| }); |
| }); |
| }); |
| </script> |
