| <!doctype html> |
| <html> |
| <head> |
| <title>Viewport: Scroll Event</title> |
| <meta charset="utf-8"> |
| <meta name="viewport" content="width=device-width, minimum-scale=1"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="viewport_support.js"></script> |
| <script> |
| setup({explicit_timeout: true, explicit_done: true}) |
| </script> |
| <style> |
| html { |
| width: 100%; |
| height: 100%; |
| } |
| </style> |
| </head> |
| <body> |
| <h1>Viewport: Scroll Event</h1> |
| <h4> |
| Test Description: This test checks that a scroll event is fired against |
| the window.visualViewport object when the viewport is scrolled. |
| </h4> |
| <h2 style="color: red">THIS IS A MANUAL TEST</h2> |
| <p id="skip"> |
| <button id="skipbtn" onclick="skipManualTest();">Skip Test</button> |
| </p> |
| <h4>Instruction</h4> |
| <p id="instruction"></p> |
| <button id="continue">Start Test</button> |
| <div id="log"></div> |
| </body> |
| <script> |
| var continueBtn = document.getElementById("continue"); |
| |
| function continueTest() { |
| nextStep(function(instructionText) { |
| var instruction = document.getElementById("instruction"); |
| continueBtn.innerText = "Continue"; |
| instruction.innerText = instructionText; |
| }); |
| } |
| |
| continueBtn.addEventListener('click', continueTest); |
| |
| var didGetScrollEvent = false; |
| var cancelable = undefined; |
| var bubbles = undefined; |
| |
| function resetValues() { |
| didGetScrollEvent = false; |
| cancelable = undefined; |
| bubbles = undefined; |
| } |
| |
| addManualTestStep( |
| function() { |
| window.visualViewport.addEventListener('scroll', function(e) { |
| didGetScrollEvent = true; |
| cancelable = e.cancelable; |
| bubbles = e.bubbles; |
| }); |
| document.documentElement.style.overflow = "hidden"; |
| }, |
| null, |
| '1. Pinch-zoom a little near the "Continue" button but don\'t ' + |
| 'perform any scrolling.'); |
| |
| addManualTestStep( |
| function() { |
| requestAnimationFrame(continueTest); |
| assert_true(didGetScrollEvent, "Got event"); |
| assert_false(cancelable, "Event is not cancelable"); |
| assert_false(bubbles, "Event does not bubble"); |
| }, |
| 'Got scroll event while pinch-zooming', |
| ''); |
| |
| addManualTestStep( |
| resetValues, |
| null, |
| '2. Scroll in any direction.'); |
| |
| addManualTestStep( |
| function() { |
| requestAnimationFrame(continueTest); |
| assert_true(didGetScrollEvent, "Got event"); |
| assert_false(cancelable, "Event is not cancelable"); |
| assert_false(bubbles, "Event does not bubble"); |
| }, |
| 'Panning viewport fires a scroll event', |
| ''); |
| |
| addManualTestStep( |
| function() { |
| continueBtn.style.position = "absolute"; |
| continueBtn.style.right = "10px"; |
| continueBtn.style.bottom = "10px"; |
| }, |
| null, |
| '3. Scroll fully to the bottom right and click the continue ' + |
| 'button.'); |
| |
| var offsetLeft; |
| var offsetTop; |
| addManualTestStep( |
| function() { |
| resetValues(); |
| document.documentElement.style.overflow = ""; |
| document.body.style.width = "500%"; |
| document.body.style.height = "500%"; |
| continueBtn.style.position = ""; |
| continueBtn.style.left = ""; |
| continueBtn.style.top = ""; |
| |
| offsetLeft = window.visualViewport.offsetLeft; |
| offsetTop = window.visualViewport.offsetTop; |
| |
| // The visual viewport should be fully scrolled so even if |
| // scrollTo does normally "push" the layout viewport with the |
| // visual, there should be no change to either offsetValue |
| window.scrollTo(10000, 10000); |
| |
| requestAnimationFrame(continueTest); |
| assert_equals(window.visualViewport.offsetLeft, offsetLeft, |
| "OffsetLeft Unchanged"); |
| assert_equals(window.visualViewport.offsetTop, offsetTop, |
| "OffsetTop Unchanged"); |
| assert_false(didGetScrollEvent, |
| "Should not get view scroll event"); |
| }, |
| 'scrollTo down and right on a fully scrolled visual viewport ' + |
| 'shouldn\'t change offsets', |
| ''); |
| |
| addManualTestStep( |
| function() { |
| requestAnimationFrame(continueTest); |
| assert_false(didGetScrollEvent, |
| "Should not get view scroll event"); |
| resetValues(); |
| }, |
| 'scrollTo without changing offsets shouldn\'t fire scroll event ' + |
| 'on view', |
| ''); |
| |
| addManualTestStep( |
| function() { |
| requestAnimationFrame(continueTest); |
| resetValues(); |
| window.scrollTo(0, 0); |
| }, |
| null, |
| ''); |
| |
| addManualTestStep( |
| function() { |
| // How scrollTo behaves in this case isn't fully spec'd but |
| // make sure it's at least rational if it does change the |
| // offset values. |
| var scrollChangedOffset = |
| offsetLeft != window.visualViewport.offsetLeft || |
| offsetTop != window.visualViewport.offsetTop; |
| |
| document.body.style.width = ""; |
| document.body.style.height = ""; |
| |
| assert_equals(didGetScrollEvent, scrollChangedOffset, |
| 'If the scrollTo changed offsets it must have fired a ' + |
| 'scroll event'); |
| }, |
| 'scrollTo must fire scroll event if it changes visualViewport.offsetLeft|Top', |
| '6. Pinch-zoom out fully'); |
| |
| addManualTestStep( |
| function() { continueBtn.remove(); }, |
| null, |
| 'Test Complete'); |
| </script> |
| </html> |