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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/200536">200536</a></dd>
<dt>Author</dt> <dd>rniwa@webkit.org</dd>
<dt>Date</dt> <dd>2016-05-06 20:51:46 -0700 (Fri, 06 May 2016)</dd>
</dl>
<h3>Log Message</h3>
<pre>MouseEvent's offsetX and offsetY should be based on relative target
https://bugs.webkit.org/show_bug.cgi?id=157444
<rdar://problem/24396408>
Reviewed by Darin Adler.
Add a W3C style testharness.js test for adjusting offsetX and offsetY to the adjusted target
since our existing behavior matches the spec as well as Chrome's behavior:
http://w3c.github.io/webcomponents/spec/shadow/#event-dispatch
* fast/shadow-dom/MouseEvent-prototype-offsetX-offsetY-expected.txt: Added.
* fast/shadow-dom/MouseEvent-prototype-offsetX-offsetY.html: Added.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsChangeLog">trunk/LayoutTests/ChangeLog</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsfastshadowdomMouseEventprototypeoffsetXoffsetYexpectedtxt">trunk/LayoutTests/fast/shadow-dom/MouseEvent-prototype-offsetX-offsetY-expected.txt</a></li>
<li><a href="#trunkLayoutTestsfastshadowdomMouseEventprototypeoffsetXoffsetYhtml">trunk/LayoutTests/fast/shadow-dom/MouseEvent-prototype-offsetX-offsetY.html</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/ChangeLog (200535 => 200536)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/ChangeLog 2016-05-07 03:08:18 UTC (rev 200535)
+++ trunk/LayoutTests/ChangeLog 2016-05-07 03:51:46 UTC (rev 200536)
</span><span class="lines">@@ -1,3 +1,18 @@
</span><ins>+2016-05-06 Ryosuke Niwa <rniwa@webkit.org>
+
+ MouseEvent's offsetX and offsetY should be based on relative target
+ https://bugs.webkit.org/show_bug.cgi?id=157444
+ <rdar://problem/24396408>
+
+ Reviewed by Darin Adler.
+
+ Add a W3C style testharness.js test for adjusting offsetX and offsetY to the adjusted target
+ since our existing behavior matches the spec as well as Chrome's behavior:
+ http://w3c.github.io/webcomponents/spec/shadow/#event-dispatch
+
+ * fast/shadow-dom/MouseEvent-prototype-offsetX-offsetY-expected.txt: Added.
+ * fast/shadow-dom/MouseEvent-prototype-offsetX-offsetY.html: Added.
+
</ins><span class="cx"> 2016-05-06 Joseph Pecoraro <pecoraro@apple.com>
</span><span class="cx">
</span><span class="cx"> Web Inspector: Improve console.count()
</span></span></pre></div>
<a id="trunkLayoutTestsfastshadowdomMouseEventprototypeoffsetXoffsetYexpectedtxt"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/fast/shadow-dom/MouseEvent-prototype-offsetX-offsetY-expected.txt (0 => 200536)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/fast/shadow-dom/MouseEvent-prototype-offsetX-offsetY-expected.txt (rev 0)
+++ trunk/LayoutTests/fast/shadow-dom/MouseEvent-prototype-offsetX-offsetY-expected.txt 2016-05-07 03:51:46 UTC (rev 200536)
</span><span class="lines">@@ -0,0 +1,6 @@
</span><ins>+Click here
+
+PASS MouseEvent's offsetX and offsetY attributes must be relative to the target.
+PASS MouseEvent's offsetX and offsetY attributes must be relative to the shadow host when an event is dispatched inside its shadow tree.
+PASS MouseEvent's offsetX and offsetY attributes must be relative to the target when an event is dispatched on a slotted content.
+
</ins></span></pre></div>
<a id="trunkLayoutTestsfastshadowdomMouseEventprototypeoffsetXoffsetYhtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/fast/shadow-dom/MouseEvent-prototype-offsetX-offsetY.html (0 => 200536)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/fast/shadow-dom/MouseEvent-prototype-offsetX-offsetY.html (rev 0)
+++ trunk/LayoutTests/fast/shadow-dom/MouseEvent-prototype-offsetX-offsetY.html 2016-05-07 03:51:46 UTC (rev 200536)
</span><span class="lines">@@ -0,0 +1,155 @@
</span><ins>+<!DOCTYPE html>
+<html>
+<head>
+<title>Shadow DOM: MouseEvent's offsetX and offsetY attributes must be relative to the relative target.</title>
+<meta name="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org">
+<meta name="assert" content="The MouseEvent offsetX and offsetY attributes must return the coordinates relative to the origin of the padding edge of the relative target">
+<link rel="help" href="http://w3c.github.io/webcomponents/spec/shadow/#event-dispatch">
+<script src="../../resources/testharness.js"></script>
+<script src="../../resources/testharnessreport.js"></script>
+<script src="resources/event-path-test-helpers.js"></script>
+<link rel='stylesheet' href='../../resources/testharness.css'>
+</head>
+<body>
+<style>
+html, body { padding: 0; margin: 0; }
+my-host { display: block; width: 180px; height: 80px; margin: 10px 20px; padding: 10px; background: #ccc; }
+#log { margin: 1rem; }
+</style>
+<my-host></my-host>
+<div id="log"></div>
+<script>
+
+var shadowStyle = '#container { width: 160px; height: 60px; padding: 10px; background: yellow; } #target { margin-left: 5px; background: orange; }';
+var host = document.querySelector('my-host');
+
+function attachLoggers(targets)
+{
+ var eventLogs = [];
+ for (var i = 0; i < targets.length; i++) {
+ targets[i].addEventListener('mousedown', function (event) {
+ eventLogs.push({current: this, target: event.target, offsetX: event.offsetX, offsetY: event.offsetY});
+ });
+ }
+ return eventLogs;
+}
+
+test(function () {
+ host.innerHTML = '<style>' + shadowStyle + '</style><div id="container"><span id="target">Click here</div></div>';
+
+ var target = host.querySelector('#target');
+ var container = host.querySelector('#container');
+
+ var eventLogs = attachLoggers([target, container, host, document.body]);
+ var mouseEvent = new MouseEvent('mousedown', {clientX: 51, clientY: 37, scoped: false, bubbles: true});
+ target.dispatchEvent(mouseEvent);
+
+ assert_equals(host.offsetLeft, 20, 'The host must be at (20px, 10px)');
+ assert_equals(host.offsetTop, 10, 'The host must be at (20px, 10px)');
+ assert_equals(target.offsetLeft, 45, 'The target must be at (45px, 30px)');
+ assert_equals(target.offsetTop, 30, 'The target must be at (45px, 30px)');
+
+ assert_equals(eventLogs[0].current, target);
+ assert_equals(eventLogs[0].target, target);
+ assert_equals(eventLogs[0].offsetX, 21); // Padding edge of target is at (30px, 20px)
+ assert_equals(eventLogs[0].offsetY, 17);
+
+ assert_equals(eventLogs[1].current, container);
+ assert_equals(eventLogs[1].target, target);
+ assert_equals(eventLogs[1].offsetX, 21);
+ assert_equals(eventLogs[1].offsetY, 17);
+
+ assert_equals(eventLogs[2].current, host);
+ assert_equals(eventLogs[2].target, target);
+ assert_equals(eventLogs[2].offsetX, 21);
+ assert_equals(eventLogs[2].offsetY, 17);
+
+ assert_equals(eventLogs[3].current, document.body);
+ assert_equals(eventLogs[3].target, target);
+ assert_equals(eventLogs[3].offsetX, 21);
+ assert_equals(eventLogs[3].offsetY, 17);
+}, 'MouseEvent\'s offsetX and offsetY attributes must be relative to the target.');
+
+var shadowRoot = host.attachShadow({mode: 'closed'});
+test(function () {
+ shadowRoot.innerHTML = '<style>' + shadowStyle + '</style><div id="container"><span id="target">Click here</div></div>';
+
+ var target = shadowRoot.querySelector('#target');
+ var container = shadowRoot.querySelector('#container');
+
+ var eventLogs = attachLoggers([target, container, shadowRoot, host, document.body]);
+ var mouseEvent = new MouseEvent('mousedown', {clientX: 51, clientY: 37, scoped: false, bubbles: true});
+ target.dispatchEvent(mouseEvent);
+
+ assert_equals(host.offsetLeft, 20, 'The host must be at (20px, 10px)');
+ assert_equals(host.offsetTop, 10, 'The host must be at (20px, 10px)');
+ assert_equals(target.offsetLeft, 45, 'The target must be at (45px, 30px)');
+ assert_equals(target.offsetTop, 30, 'The target must be at (45px, 30px)');
+
+ assert_equals(eventLogs[0].current, target);
+ assert_equals(eventLogs[0].target, target);
+ assert_equals(eventLogs[0].offsetX, 21); // Padding edge of target is at (30px, 20px)
+ assert_equals(eventLogs[0].offsetY, 17);
+
+ assert_equals(eventLogs[1].current, container);
+ assert_equals(eventLogs[1].target, target);
+ assert_equals(eventLogs[1].offsetX, 21);
+ assert_equals(eventLogs[1].offsetY, 17);
+
+ assert_equals(eventLogs[3].current, host);
+ assert_equals(eventLogs[3].target, host);
+ assert_equals(eventLogs[3].offsetX, 31); // Padding edge of host is at (20px, 10px)
+ assert_equals(eventLogs[3].offsetY, 27);
+
+ assert_equals(eventLogs[4].current, document.body);
+ assert_equals(eventLogs[4].target, host);
+ assert_equals(eventLogs[4].offsetX, 31);
+ assert_equals(eventLogs[4].offsetY, 27);
+}, 'MouseEvent\'s offsetX and offsetY attributes must be relative to the shadow host when an event is dispatched inside its shadow tree.');
+
+test(function () {
+ shadowRoot.innerHTML = '<style>' + shadowStyle + '</style><div id="container"><slot></slot></div>';
+ host.innerHTML = '<style>' + shadowStyle + '</style><div id="target">Click here</div>';
+
+ var target = host.querySelector('#target');
+ var container = shadowRoot.querySelector('#container');
+
+ var eventLogs = attachLoggers([target, container, shadowRoot, host, document.body]);
+ var mouseEvent = new MouseEvent('mousedown', {clientX: 51, clientY: 37, scoped: false, bubbles: true});
+ target.dispatchEvent(mouseEvent);
+
+ assert_equals(host.offsetLeft, 20, 'The host must be at (20px, 10px)');
+ assert_equals(host.offsetTop, 10, 'The host must be at (20px, 10px)');
+ assert_equals(target.offsetLeft, 45, 'The target must be at (45px, 30px)');
+ assert_equals(target.offsetTop, 30, 'The target must be at (45px, 30px)');
+
+ assert_equals(eventLogs[0].current, target);
+ assert_equals(eventLogs[0].target, target);
+ assert_equals(eventLogs[0].target.offsetParent, document.body);
+ assert_equals(eventLogs[0].offsetX, 6); // Padding edge of target is at (45px, 30px)
+ assert_equals(eventLogs[0].offsetY, 7);
+
+ assert_equals(eventLogs[1].current, container);
+ assert_equals(eventLogs[1].target, target);
+ assert_equals(eventLogs[1].offsetX, 6);
+ assert_equals(eventLogs[1].offsetY, 7);
+
+ assert_equals(eventLogs[2].current, shadowRoot);
+ assert_equals(eventLogs[2].target, target);
+ assert_equals(eventLogs[2].offsetX, 6);
+ assert_equals(eventLogs[2].offsetY, 7);
+
+ assert_equals(eventLogs[3].current, host);
+ assert_equals(eventLogs[3].target, target);
+ assert_equals(eventLogs[3].offsetX, 6);
+ assert_equals(eventLogs[3].offsetY, 7);
+
+ assert_equals(eventLogs[4].current, document.body);
+ assert_equals(eventLogs[4].target, target);
+ assert_equals(eventLogs[4].offsetX, 6);
+ assert_equals(eventLogs[4].offsetY, 7);
+}, 'MouseEvent\'s offsetX and offsetY attributes must be relative to the target when an event is dispatched on a slotted content.');
+
+</script>
+</body>
+</html>
</ins></span></pre>
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