<!DOCTYPE html> <!-- webkit-test-runner [ useFlexibleViewport=true ] -->

<html>
<head>
    <meta name="viewport" content="initial-scale=1.0">
    <style>
        body {
            width: 1000px;
            height: 2000px;
        }
        .fixed {
            position: fixed;
            background-color: silver;
            top: 10px;
            padding: 10px;
        }
    </style>
    <script>
        if (window.testRunner) {
            testRunner.waitUntilDone();
            testRunner.dumpAsText();
        }

        function getScrollDownUIScript()
        {
            return `(function() {
                uiController.immediateScrollToOffset(0, 800);
            })();`;
        }
        
        function getFocusInputUIScript(x, y)
        {
            return `(function() {
                uiController.didEndZoomingCallback = function() {
                    uiController.uiScriptComplete();
                }
                
                uiController.singleTapAtPoint(${x}, ${y}, function() {});
            })();`;
        }

        function runTest()
        {
            if (!window.testRunner || !testRunner.runUIScript)
                return;

            testRunner.runUIScript(getScrollDownUIScript(), function() {
                window.setTimeout(function() {
                    var rect = document.getElementById('input').getBoundingClientRect();
                    // singleTapAtPoint takes document coordinates, so add scrollTop to clientRect.top.
                    testRunner.runUIScript(getFocusInputUIScript(rect.left, rect.top + document.scrollingElement.scrollTop), function() {

                        if (window.internals) {
                            var output = 'Layout viewport: ' + JSON.stringify(internals.layoutViewportRect()) + '\nVisual viewport: ' + JSON.stringify(internals.visualViewportRect()) + '\n';
                            document.getElementById('results').innerText = output;
                        }

                        testRunner.notifyDone();
                    });
                }, 0);
            });
        }

        window.addEventListener('load', runTest, false);
    </script>
</head>
<body>
<pre id="results"></pre>
<div class="fixed">
    <input id="input" type="text">
</div>
</body>
</html>