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    <head>
        <title>Set/Release capture + relatedTarget</title>
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        <h1>Pointer Events Capture Test - capture and relatedTarget</h1>
        <h4>
            Test Description: This test checks if setCapture/releaseCapture functions works properly. Complete the following actions:
            <ol>
                <li> Put your mouse over the purple rectangle. pointerover should be received for the purple rectangle
                <li> Press and hold left mouse button over "Set Capture" button
                <li> Move your mouse. pointerover should be received for the black rectangle
                <li> Release left mouse button to complete the test.
            </ol>
        </h4>
        Test passes if the proper behavior of the events is observed.

        <div id="target0" style="background:black; color:white"></div>
        <br>
        <div id="target1" style="background:purple; color:white"></div>
        <br>
        <input type="button" id="btnCapture" value="Set Capture">
        <script type='text/javascript'>
            var isPointerCapture = false;
            var isPointeroverGot = false;
            var count=0;
            var event_log = [];

            var detected_pointertypes = {};
            add_completion_callback(end_of_test);
            function end_of_test() {
                showLoggedEvents();
                showPointerTypes();
            }

            var target0 = document.getElementById('target0');
            var target1 = document.getElementById('target1');
            var captureButton = document.getElementById('btnCapture');

            setup({ explicit_done: true });

            window.onload = function() {
                on_event(captureButton, 'pointerdown', function(e) {
                    if(isPointerCapture == false) {
                        isPointerCapture = true;
                        sPointerCapture(e);
                    }
                    else {
                        isPointerCapture = false;
                        rPointerCapture(e);
                    }
                });

                on_event(target0, 'gotpointercapture', function(e) {
                    event_log.push('gotpointercapture@target0');
                });

                on_event(target0, 'lostpointercapture', function(e) {
                    event_log.push('lostpointercapture@target0');
                    isPointerCapture = false;
                });

                run();
            }

            function run() {
                var actions_promise;

                // After invoking the setPointerCapture method on an element, subsequent pointer events for the specified pointer must be targeted at that element
                // and boundary events should be sent accordingly and relatedTarget should behave normally.
                on_event(target0, "pointerover", function (event) {
                    event_log.push('pointerover@target0');
                    if(isPointerCapture && isPointeroverGot) {
                        test(function() {
                            assert_not_equals(event.relatedTarget, null, "relatedTarget should not be null even when the capture is set")
                        }, "relatedTarget should not be null even when the capture is set.");

                        actions_promise.then( () => {
                            done();
                        });
                    }
                });

                on_event(target1, "pointerover", function (event) {
                    detected_pointertypes[ event.pointerType ] = true;
                    if(!isPointeroverGot) {
                        test(function() {
                            assert_equals(isPointerCapture, false, "pointerover shouldn't trigger for this target when capture is enabled");
                        }, "pointerover shouldn't trigger for the purple rectangle while the black rectangle has capture");
                        isPointeroverGot = true;
                        event_log.push('pointerover@target1');
                    }
                });

                // Inject mouse inputs.
                actions_promise = new test_driver.Actions()
                                      .pointerMove(0, 0, {origin: target1})
                                      .pointerMove(0, 0, {origin: captureButton})
                                      .pointerDown()
                                      .pointerMove(0, 0, {origin: target1})
                                      .pointerMove(0, 0, {origin: target0})
                                      .pointerUp()
                                      .send();
            }
        </script>
        <h1>Pointer Events Capture Test</h1>
        <div id="complete-notice">
            <p>Test complete: Scroll to Summary to view Pass/Fail Results.</p>
            <p>The following pointer types were detected: <span id="pointertype-log"></span>.</p>
            <p>The following events were logged: <span id="event-log"></span>.</p>
            <p>Refresh the page to run the tests again with a different pointer type.</p>
        </div>
        <div id="log"></div>
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