LayoutTests/fast/scrolling/latching/scroll-latched-nested-div.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <head>
 <style>
 .scrollable_region {
     width: 680px;
 }
 .contents {
     height: 1024px;
     background-image: repeating-linear-gradient(silver, white 200px);
 }
 </style>
 <script src="../../../resources/js-test-pre.js"></script>
 <script>
     jsTestIsAsync = true;

     var wrapperTarget;
     var divTarget;
     var pageScrollPositionBefore;
     var wrapperScrollPositionBefore;
     var divScrollPositionBefore;

     function checkForSecondScroll()
     {
         // 'parent' should have scrolled, the content of 'target' should
         // not have scrolled, and 'wrapper' should not have scrolled.
         var pageScrollPositionAfter = document.scrollingElement.scrollTop;
         var wrapperScrollPositionAfter = wrapperTarget.scrollTop;
         var divScrollPositionAfter = divTarget.scrollTop;

         debug("Second scroll event:");
         if (pageScrollPositionBefore != pageScrollPositionAfter)
             testPassed("Page received wheel events during the second gesture.");
         else
             testFailed("Page did not receive wheel events during the second gesture.");

         if (wrapperScrollPositionBefore != wrapperScrollPositionAfter)
             testFailed("Wrapper received wheel events during the second gesture.");
         else
             testPassed("Wrapper did not receive wheel events during the second gesture.");

         if (divScrollPositionBefore != divScrollPositionAfter)
             testFailed("div received wheel events during the second gesture.");
         else
             testPassed("div did not receive wheel events during the second gesture.");

         finishJSTest();
     }

     function checkForFirstScroll()
     {
         // 'parent' should not have scrolled, and the content of 'target' should
         // not have moved. However, 'wrapper' should have moved.
         var pageScrollPositionAfter = document.scrollingElement.scrollTop;
         var wrapperScrollPositionAfter = wrapperTarget.scrollTop;
         var divScrollPositionAfter = divTarget.scrollTop;

         debug("First scroll event:");
         if (pageScrollPositionBefore != pageScrollPositionAfter)
             testFailed("Page received wheel events during the first gesture.");
         else
             testPassed("Page did not receive wheel events during the first gesture.");

         if (wrapperScrollPositionBefore != wrapperScrollPositionAfter)
             testPassed("Wrapper received wheel events during the first gesture.");
         else
             testFailed("Wrapper did not receive wheel events during the first gesture.");

         if (divScrollPositionBefore != divScrollPositionAfter)
             testFailed("div received wheel events during the first gesture.");
         else
             testPassed("div did not receive wheel events during the first gesture.");

         wrapperScrollPositionBefore = wrapperTarget.scrollTop;

         eventSender.monitorWheelEvents();
         eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -1, 'began', 'none');
         eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -1, 'changed', 'none');
         eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -1, 'changed', 'none');
         eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, 'ended', 'none');
         eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -1, 'none', 'begin');
         eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -1, 'none', 'continue');
         eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, 'none', 'end');
         eventSender.callAfterScrollingCompletes(checkForSecondScroll);
     }

     function scrollTest()
     {
         pageScrollPositionBefore = document.scrollingElement.scrollTop;

         divTarget = document.getElementById('target');
         divTarget.scrollTop = divTarget.scrollHeight - divTarget.clientHeight - 100;

         divScrollPositionBefore = divTarget.scrollTop;

         wrapperTarget = document.getElementById('wrapper');
         wrapperScrollPositionBefore = wrapperTarget.scrollTop;
         debug("wrapperTarget = " + wrapperTarget);

         // Move mouse to a position to the right side of the table, and near the bottom.
         var startPosX = divTarget.offsetLeft + divTarget.clientWidth + 50;
         var startPosY = Math.round(divTarget.offsetTop) - 42; // One wheel turn before end.

         eventSender.monitorWheelEvents();
         eventSender.mouseMoveTo(startPosX, startPosY); // Make sure we are just outside the iFrame
         eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -1, 'began', 'none');
         eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -1, 'changed', 'none');
         eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -1, 'changed', 'none');
         eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, 'ended', 'none');
         eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -5, 'none', 'begin');
         eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -10, 'none', 'continue');
         eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, 'none', 'end');
         eventSender.callAfterScrollingCompletes(checkForFirstScroll);
     }

     function setupTopLevel()
     {
         description("Tests that a scrollable div nested inside another scrollable div properly handles wheel events under sub-pixel conditions.");
         if (window.eventSender) {
             setTimeout(scrollTest, 0);
             return;
         }

         finishJSTest();
     }

     window.addEventListener('load', () => {
         setupTopLevel();
     }, false);
 </script>
 </head>
 <body>
 <div id="parent" style="height: 2000px; width: 800px;">
     <div id="wrapper" style='overflow-y: auto; overflow-x: hidden; max-height: 600px;'>
         <div id="source" style="height: 100px; width: 600px;">
             Put mouse next to the table labeled 'Scrollable Region' and flick downward. The scroll movement
             should come to a halt. Then flick again. The overall page should scroll.
         </div>
         <div class="scrollable_region">
             <h3>Scrollable Region</h3>
             <div id="target" style='overflow-y: auto; overflow-x: hidden; max-height: 485.55px;'>
                 <div class="contents">
                 </div>
             </div>
             <div id="bottom" style="height: 100px; width: 600px;">
                 <p>A set of information at the bottom of the table.</p>
             </div>
         </div>
     </div>
 </div>
 <div id="console"></div>
 <script src="../../../resources/js-test-post.js"></script>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<style>
	.scrollable_region {
	width: 680px;
	}
	.contents {
	height: 1024px;
	background-image: repeating-linear-gradient(silver, white 200px);
	}
	</style>
	<script src="../../../resources/js-test-pre.js"></script>
	<script>
	jsTestIsAsync = true;

	var wrapperTarget;
	var divTarget;
	var pageScrollPositionBefore;
	var wrapperScrollPositionBefore;
	var divScrollPositionBefore;

	function checkForSecondScroll()
	{
	// 'parent' should have scrolled, the content of 'target' should
	// not have scrolled, and 'wrapper' should not have scrolled.
	var pageScrollPositionAfter = document.scrollingElement.scrollTop;
	var wrapperScrollPositionAfter = wrapperTarget.scrollTop;
	var divScrollPositionAfter = divTarget.scrollTop;

	debug("Second scroll event:");
	if (pageScrollPositionBefore != pageScrollPositionAfter)
	testPassed("Page received wheel events during the second gesture.");
	else
	testFailed("Page did not receive wheel events during the second gesture.");

	if (wrapperScrollPositionBefore != wrapperScrollPositionAfter)
	testFailed("Wrapper received wheel events during the second gesture.");
	else
	testPassed("Wrapper did not receive wheel events during the second gesture.");

	if (divScrollPositionBefore != divScrollPositionAfter)
	testFailed("div received wheel events during the second gesture.");
	else
	testPassed("div did not receive wheel events during the second gesture.");

	finishJSTest();
	}

	function checkForFirstScroll()
	{
	// 'parent' should not have scrolled, and the content of 'target' should
	// not have moved. However, 'wrapper' should have moved.
	var pageScrollPositionAfter = document.scrollingElement.scrollTop;
	var wrapperScrollPositionAfter = wrapperTarget.scrollTop;
	var divScrollPositionAfter = divTarget.scrollTop;

	debug("First scroll event:");
	if (pageScrollPositionBefore != pageScrollPositionAfter)
	testFailed("Page received wheel events during the first gesture.");
	else
	testPassed("Page did not receive wheel events during the first gesture.");

	if (wrapperScrollPositionBefore != wrapperScrollPositionAfter)
	testPassed("Wrapper received wheel events during the first gesture.");
	else
	testFailed("Wrapper did not receive wheel events during the first gesture.");

	if (divScrollPositionBefore != divScrollPositionAfter)
	testFailed("div received wheel events during the first gesture.");
	else
	testPassed("div did not receive wheel events during the first gesture.");

	wrapperScrollPositionBefore = wrapperTarget.scrollTop;

	eventSender.monitorWheelEvents();
	eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -1, 'began', 'none');
	eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -1, 'changed', 'none');
	eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -1, 'changed', 'none');
	eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, 'ended', 'none');
	eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -1, 'none', 'begin');
	eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -1, 'none', 'continue');
	eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, 'none', 'end');
	eventSender.callAfterScrollingCompletes(checkForSecondScroll);
	}

	function scrollTest()
	{
	pageScrollPositionBefore = document.scrollingElement.scrollTop;

	divTarget = document.getElementById('target');
	divTarget.scrollTop = divTarget.scrollHeight - divTarget.clientHeight - 100;

	divScrollPositionBefore = divTarget.scrollTop;

	wrapperTarget = document.getElementById('wrapper');
	wrapperScrollPositionBefore = wrapperTarget.scrollTop;
	debug("wrapperTarget = " + wrapperTarget);

	// Move mouse to a position to the right side of the table, and near the bottom.
	var startPosX = divTarget.offsetLeft + divTarget.clientWidth + 50;
	var startPosY = Math.round(divTarget.offsetTop) - 42; // One wheel turn before end.

	eventSender.monitorWheelEvents();
	eventSender.mouseMoveTo(startPosX, startPosY); // Make sure we are just outside the iFrame
	eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -1, 'began', 'none');
	eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -1, 'changed', 'none');
	eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -1, 'changed', 'none');
	eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, 'ended', 'none');
	eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -5, 'none', 'begin');
	eventSender.mouseScrollByWithWheelAndMomentumPhases(0, -10, 'none', 'continue');
	eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, 'none', 'end');
	eventSender.callAfterScrollingCompletes(checkForFirstScroll);
	}

	function setupTopLevel()
	{
	description("Tests that a scrollable div nested inside another scrollable div properly handles wheel events under sub-pixel conditions.");
	if (window.eventSender) {
	setTimeout(scrollTest, 0);
	return;
	}

	finishJSTest();
	}

	window.addEventListener('load', () => {
	setupTopLevel();
	}, false);
	</script>
	</head>
	<body>
	<div id="parent" style="height: 2000px; width: 800px;">
	<div id="wrapper" style='overflow-y: auto; overflow-x: hidden; max-height: 600px;'>
	<div id="source" style="height: 100px; width: 600px;">
	Put mouse next to the table labeled 'Scrollable Region' and flick downward. The scroll movement
	should come to a halt. Then flick again. The overall page should scroll.
	</div>
	<div class="scrollable_region">
	<h3>Scrollable Region</h3>
	<div id="target" style='overflow-y: auto; overflow-x: hidden; max-height: 485.55px;'>
	<div class="contents">
	</div>
	</div>
	<div id="bottom" style="height: 100px; width: 600px;">
	<p>A set of information at the bottom of the table.</p>
	</div>
	</div>
	</div>
	</div>
	<div id="console"></div>
	<script src="../../../resources/js-test-post.js"></script>
	</body>
	</html>