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<title>[204015] branches/safari-602-branch</title>
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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/204015">204015</a></dd>
<dt>Author</dt> <dd>bshafiei@apple.com</dd>
<dt>Date</dt> <dd>2016-08-01 23:51:22 -0700 (Mon, 01 Aug 2016)</dd>
</dl>
<h3>Log Message</h3>
<pre>Merge <a href="http://trac.webkit.org/projects/webkit/changeset/203985">r203985</a>. rdar://problem/26310261</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari602branchLayoutTestsChangeLog">branches/safari-602-branch/LayoutTests/ChangeLog</a></li>
<li><a href="#branchessafari602branchLayoutTestsTestExpectations">branches/safari-602-branch/LayoutTests/TestExpectations</a></li>
<li><a href="#branchessafari602branchSourceWebCoreChangeLog">branches/safari-602-branch/Source/WebCore/ChangeLog</a></li>
<li><a href="#branchessafari602branchSourceWebCorestyleRenderTreeUpdatercpp">branches/safari-602-branch/Source/WebCore/style/RenderTreeUpdater.cpp</a></li>
<li><a href="#branchessafari602branchSourceWebCorestyleStyleTreeResolvercpp">branches/safari-602-branch/Source/WebCore/style/StyleTreeResolver.cpp</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li>branches/safari-602-branch/LayoutTests/fast/content-observation/</li>
<li><a href="#branchessafari602branchLayoutTestsfastcontentobservationclickeventsuppressiononcontentchangeexpectedtxt">branches/safari-602-branch/LayoutTests/fast/content-observation/click-event-suppression-on-content-change-expected.txt</a></li>
<li><a href="#branchessafari602branchLayoutTestsfastcontentobservationclickeventsuppressiononcontentchangehtml">branches/safari-602-branch/LayoutTests/fast/content-observation/click-event-suppression-on-content-change.html</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchessafari602branchLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-602-branch/LayoutTests/ChangeLog (204014 => 204015)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-602-branch/LayoutTests/ChangeLog 2016-08-02 06:46:57 UTC (rev 204014)
+++ branches/safari-602-branch/LayoutTests/ChangeLog 2016-08-02 06:51:22 UTC (rev 204015)
</span><span class="lines">@@ -1,3 +1,20 @@
</span><ins>+2016-08-01 Babak Shafiei <bshafiei@apple.com>
+
+ Merge r203985. rdar://problem/26310261
+
+ 2016-08-01 Antti Koivisto <antti@apple.com>
+
+ REGRESSION(r198943): drop-down menu navigation on fiddlevideo.com doesn't appear on iOS, works on OS X
+ https://bugs.webkit.org/show_bug.cgi?id=160406
+
+ Reviewed by Simon Fraser.
+
+ This stuff has had zero test coverage. Adding a basic UIScript based test.
+
+ * TestExpectations:
+ * fast/content-observation/click-event-suppression-on-content-change-expected.txt: Added.
+ * fast/content-observation/click-event-suppression-on-content-change.html: Added.
+
</ins><span class="cx"> 2016-08-01 Alexey Proskuryakov <ap@apple.com>
</span><span class="cx">
</span><span class="cx"> Merge r204002.
</span></span></pre></div>
<a id="branchessafari602branchLayoutTestsTestExpectations"></a>
<div class="modfile"><h4>Modified: branches/safari-602-branch/LayoutTests/TestExpectations (204014 => 204015)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-602-branch/LayoutTests/TestExpectations 2016-08-02 06:46:57 UTC (rev 204014)
+++ branches/safari-602-branch/LayoutTests/TestExpectations 2016-08-02 06:51:22 UTC (rev 204015)
</span><span class="lines">@@ -22,6 +22,7 @@
</span><span class="cx"> fast/events/ios [ Skip ]
</span><span class="cx"> fast/events/touch/ios [ Skip ]
</span><span class="cx"> fast/scrolling/ios [ Skip ]
</span><ins>+fast/content-observation [ Skip ]
</ins><span class="cx"> media/mac [ Skip ]
</span><span class="cx">
</span><span class="cx"> fast/forms/attributed-strings.html [ Skip ]
</span></span></pre></div>
<a id="branchessafari602branchLayoutTestsfastcontentobservationclickeventsuppressiononcontentchangeexpectedtxt"></a>
<div class="addfile"><h4>Added: branches/safari-602-branch/LayoutTests/fast/content-observation/click-event-suppression-on-content-change-expected.txt (0 => 204015)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-602-branch/LayoutTests/fast/content-observation/click-event-suppression-on-content-change-expected.txt (rev 0)
+++ branches/safari-602-branch/LayoutTests/fast/content-observation/click-event-suppression-on-content-change-expected.txt 2016-08-02 06:51:22 UTC (rev 204015)
</span><span class="lines">@@ -0,0 +1,14 @@
</span><ins>+Test that if document is visibly mutated in mouseover handler then synthetic click is not generated until the next tap.
+Tapping once
+mouseover
+mouseclick
+Tapping again
+mouseclick
+Tapping out
+mouseout
+Enabling mutation on mouseover
+Tapping once
+mouseover
+Tapping again
+mouseclick
+
</ins></span></pre></div>
<a id="branchessafari602branchLayoutTestsfastcontentobservationclickeventsuppressiononcontentchangehtml"></a>
<div class="addfile"><h4>Added: branches/safari-602-branch/LayoutTests/fast/content-observation/click-event-suppression-on-content-change.html (0 => 204015)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-602-branch/LayoutTests/fast/content-observation/click-event-suppression-on-content-change.html (rev 0)
+++ branches/safari-602-branch/LayoutTests/fast/content-observation/click-event-suppression-on-content-change.html 2016-08-02 06:51:22 UTC (rev 204015)
</span><span class="lines">@@ -0,0 +1,80 @@
</span><ins>+<!DOCTYPE html>
+<html>
+<head>
+<style>
+#neutral { position:absolute; top:0px; left:100px; width:100px; height:100px; border:2px solid blue; }
+#test { position:absolute; top:100px; left:100px; width:100px; height:100px; border:2px solid blue; }
+#test div { border: 2px solid red; width: 10px; height: 10px; }
+</style>
+<script>
+if (window.testRunner) {
+ testRunner.dumpAsText();
+ testRunner.waitUntilDone();
+}
+
+var outputText = "";
+
+function output(text) {
+ outputText += text + '<br>';
+}
+
+var mutateOnMouseOver = false;
+
+function mouseOver() {
+ if (mutateOnMouseOver)
+ document.querySelector('#test').appendChild(document.createElement("div"));
+ output('mouseover');
+}
+function mouseOut() {
+ output('mouseout');
+}
+function mouseClick() {
+ output('mouseclick');
+}
+
+function getTapUIScript(x, y)
+{
+ return `
+ (function() {
+ uiController.singleTapAtPoint(${x}, ${y}, function() {
+ uiController.uiScriptComplete("Done");
+ });
+ })();`
+}
+
+function test() {
+ if (!window.testRunner || !window.testRunner.runUIScript)
+ return;
+ // Test tapping in a div.
+ output("Tapping once");
+ testRunner.runUIScript(getTapUIScript(150, 150), function(result) {
+ output("Tapping again");
+ testRunner.runUIScript(getTapUIScript(150, 150), function(result) {
+ output("Tapping out");
+ testRunner.runUIScript(getTapUIScript(150, 50), function(result) {
+ output("Enabling mutation on mouseover");
+ mutateOnMouseOver = true;
+ output("Tapping once");
+ testRunner.runUIScript(getTapUIScript(150, 150), function(result) {
+ output("Tapping again");
+ testRunner.runUIScript(getTapUIScript(150, 150), function(result) {
+ document.querySelector('#output').innerHTML += outputText;
+ testRunner.notifyDone();
+ });
+ });
+ });
+ });
+ });
+}
+
+</script>
+</head>
+<body onload="test()">
+ <div>Test that if document is visibly mutated in mouseover handler then synthetic click is not generated until the next tap.</div>
+ <div id='neutral' onmouseover='' onmouseout='' onclick=''>
+ </div>
+ <div id='test' onmouseover='mouseOver()' onmouseout='mouseOut()' onclick='mouseClick()'>
+ </div>
+ <div id='output'></div>
+</body>
+</html>
</ins></span></pre></div>
<a id="branchessafari602branchSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-602-branch/Source/WebCore/ChangeLog (204014 => 204015)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-602-branch/Source/WebCore/ChangeLog 2016-08-02 06:46:57 UTC (rev 204014)
+++ branches/safari-602-branch/Source/WebCore/ChangeLog 2016-08-02 06:51:22 UTC (rev 204015)
</span><span class="lines">@@ -1,5 +1,45 @@
</span><span class="cx"> 2016-08-01 Babak Shafiei <bshafiei@apple.com>
</span><span class="cx">
</span><ins>+ Merge r203985. rdar://problem/26310261
+
+ 2016-08-01 Antti Koivisto <antti@apple.com>
+
+ REGRESSION(r198943): drop-down menu navigation on fiddlevideo.com doesn't appear on iOS, works on OS X
+ https://bugs.webkit.org/show_bug.cgi?id=160406
+ rdar://problem/26310261
+
+ Reviewed by Simon Fraser.
+
+ On iOS we generate synthetic mouse events from taps. Click event is generated on tap only if the move event
+ doesn't produce visible changes to the document. This is important to make certain types of drop down menus
+ work.
+
+ The information on mutations is passed via WKContentObservation side channel which is updated from varous parts
+ of the code. Newly visible elements are detected CheckForVisibilityChangeOnRecalcStyle during style resolution.
+ This got broken by the style refactoring because it assumes that renderer is mutated along with style computation.
+ However mutation is now a separate step performed by RenderTreeUpdater.
+
+ Fix by moving CheckForVisibilityChange to RenderTreeUpdater.
+
+ Test: fast/content-observation/click-event-suppression-on-content-change.html
+
+ * style/RenderTreeUpdater.cpp:
+ (WebCore::RenderTreeUpdater::Parent::Parent):
+ (WebCore::RenderTreeUpdater::updateElementRenderer):
+ (WebCore::RenderTreeUpdater::tearDownRenderer):
+ (WebCore::elementImplicitVisibility):
+ (WebCore::CheckForVisibilityChange::CheckForVisibilityChange):
+ (WebCore::CheckForVisibilityChange::~CheckForVisibilityChange):
+ * style/StyleTreeResolver.cpp:
+ (WebCore::Style::TreeResolver::createAnimatedElementUpdate):
+ (WebCore::Style::TreeResolver::pushParent):
+ (WebCore::Style::TreeResolver::resolveComposedTree):
+ (WebCore::Style::elementImplicitVisibility): Deleted.
+ (WebCore::Style::CheckForVisibilityChangeOnRecalcStyle::CheckForVisibilityChangeOnRecalcStyle): Deleted.
+ (WebCore::Style::CheckForVisibilityChangeOnRecalcStyle::~CheckForVisibilityChangeOnRecalcStyle): Deleted.
+
+2016-08-01 Babak Shafiei <bshafiei@apple.com>
+
</ins><span class="cx"> Roll out r203799.
</span><span class="cx">
</span><span class="cx"> 2016-08-01 Babak Shafiei <bshafiei@apple.com>
</span></span></pre></div>
<a id="branchessafari602branchSourceWebCorestyleRenderTreeUpdatercpp"></a>
<div class="modfile"><h4>Modified: branches/safari-602-branch/Source/WebCore/style/RenderTreeUpdater.cpp (204014 => 204015)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-602-branch/Source/WebCore/style/RenderTreeUpdater.cpp 2016-08-02 06:46:57 UTC (rev 204014)
+++ branches/safari-602-branch/Source/WebCore/style/RenderTreeUpdater.cpp 2016-08-02 06:51:22 UTC (rev 204015)
</span><span class="lines">@@ -34,6 +34,7 @@
</span><span class="cx"> #include "FlowThreadController.h"
</span><span class="cx"> #include "HTMLSlotElement.h"
</span><span class="cx"> #include "InspectorInstrumentation.h"
</span><ins>+#include "NodeRenderStyle.h"
</ins><span class="cx"> #include "PseudoElement.h"
</span><span class="cx"> #include "RenderFullScreen.h"
</span><span class="cx"> #include "RenderNamedFlowThread.h"
</span><span class="lines">@@ -40,8 +41,26 @@
</span><span class="cx"> #include "StyleResolver.h"
</span><span class="cx"> #include "StyleTreeResolver.h"
</span><span class="cx">
</span><ins>+#if PLATFORM(IOS)
+#include "WKContentObservation.h"
+#endif
+
</ins><span class="cx"> namespace WebCore {
</span><span class="cx">
</span><ins>+#if PLATFORM(IOS)
+class CheckForVisibilityChange {
+public:
+ CheckForVisibilityChange(const Element&);
+ ~CheckForVisibilityChange();
+
+private:
+ const Element& m_element;
+ EDisplay m_previousDisplay;
+ EVisibility m_previousVisibility;
+ EVisibility m_previousImplicitVisibility;
+};
+#endif // PLATFORM(IOS)
+
</ins><span class="cx"> RenderTreeUpdater::Parent::Parent(ContainerNode& root)
</span><span class="cx"> : element(is<Document>(root) ? nullptr : downcast<Element>(&root))
</span><span class="cx"> , renderTreePosition(RenderTreePosition(*root.renderer()))
</span><span class="lines">@@ -242,6 +261,10 @@
</span><span class="cx">
</span><span class="cx"> void RenderTreeUpdater::updateElementRenderer(Element& element, Style::ElementUpdate& update)
</span><span class="cx"> {
</span><ins>+#if PLATFORM(IOS)
+ CheckForVisibilityChange checkForVisibilityChange(element);
+#endif
+
</ins><span class="cx"> bool shouldTearDownRenderers = update.change == Style::Detach && (element.renderer() || element.isNamedFlowContentElement());
</span><span class="cx"> if (shouldTearDownRenderers)
</span><span class="cx"> tearDownRenderers(element, TeardownType::KeepHoverAndActive);
</span><span class="lines">@@ -566,4 +589,51 @@
</span><span class="cx"> text.setRenderer(nullptr);
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+#if PLATFORM(IOS)
+static EVisibility elementImplicitVisibility(const Element& element)
+{
+ auto* renderer = element.renderer();
+ if (!renderer)
+ return VISIBLE;
+
+ auto& style = renderer->style();
+
+ auto width = style.width();
+ auto height = style.height();
+ if ((width.isFixed() && width.value() <= 0) || (height.isFixed() && height.value() <= 0))
+ return HIDDEN;
+
+ auto top = style.top();
+ auto left = style.left();
+ if (left.isFixed() && width.isFixed() && -left.value() >= width.value())
+ return HIDDEN;
+
+ if (top.isFixed() && height.isFixed() && -top.value() >= height.value())
+ return HIDDEN;
+ return VISIBLE;
</ins><span class="cx"> }
</span><ins>+
+CheckForVisibilityChange::CheckForVisibilityChange(const Element& element)
+ : m_element(element)
+ , m_previousDisplay(element.renderStyle() ? element.renderStyle()->display() : NONE)
+ , m_previousVisibility(element.renderStyle() ? element.renderStyle()->visibility() : HIDDEN)
+ , m_previousImplicitVisibility(WKObservingContentChanges() && WKObservedContentChange() != WKContentVisibilityChange ? elementImplicitVisibility(element) : VISIBLE)
+{
+}
+
+CheckForVisibilityChange::~CheckForVisibilityChange()
+{
+ if (!WKObservingContentChanges())
+ return;
+ if (m_element.isInUserAgentShadowTree())
+ return;
+ auto* style = m_element.renderStyle();
+ if (!style)
+ return;
+ if ((m_previousDisplay == NONE && style->display() != NONE) || (m_previousVisibility == HIDDEN && style->visibility() != HIDDEN)
+ || (m_previousImplicitVisibility == HIDDEN && elementImplicitVisibility(m_element) == VISIBLE))
+ WKSetObservedContentChange(WKContentVisibilityChange);
+}
+#endif
+
+}
</ins></span></pre></div>
<a id="branchessafari602branchSourceWebCorestyleStyleTreeResolvercpp"></a>
<div class="modfile"><h4>Modified: branches/safari-602-branch/Source/WebCore/style/StyleTreeResolver.cpp (204014 => 204015)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-602-branch/Source/WebCore/style/StyleTreeResolver.cpp 2016-08-02 06:46:57 UTC (rev 204014)
+++ branches/safari-602-branch/Source/WebCore/style/StyleTreeResolver.cpp 2016-08-02 06:51:22 UTC (rev 204015)
</span><span class="lines">@@ -47,10 +47,6 @@
</span><span class="cx"> #include "StyleResolver.h"
</span><span class="cx"> #include "Text.h"
</span><span class="cx">
</span><del>-#if PLATFORM(IOS)
-#include "WKContentObservation.h"
-#endif
-
</del><span class="cx"> namespace WebCore {
</span><span class="cx">
</span><span class="cx"> namespace Style {
</span><span class="lines">@@ -265,60 +261,6 @@
</span><span class="cx"> return update;
</span><span class="cx"> }
</span><span class="cx">
</span><del>-#if PLATFORM(IOS)
-static EVisibility elementImplicitVisibility(const Element* element)
-{
- RenderObject* renderer = element->renderer();
- if (!renderer)
- return VISIBLE;
-
- auto& style = renderer->style();
-
- Length width(style.width());
- Length height(style.height());
- if ((width.isFixed() && width.value() <= 0) || (height.isFixed() && height.value() <= 0))
- return HIDDEN;
-
- Length top(style.top());
- Length left(style.left());
- if (left.isFixed() && width.isFixed() && -left.value() >= width.value())
- return HIDDEN;
-
- if (top.isFixed() && height.isFixed() && -top.value() >= height.value())
- return HIDDEN;
- return VISIBLE;
-}
-
-class CheckForVisibilityChangeOnRecalcStyle {
-public:
- CheckForVisibilityChangeOnRecalcStyle(Element* element, const RenderStyle* currentStyle)
- : m_element(element)
- , m_previousDisplay(currentStyle ? currentStyle->display() : NONE)
- , m_previousVisibility(currentStyle ? currentStyle->visibility() : HIDDEN)
- , m_previousImplicitVisibility(WKObservingContentChanges() && WKObservedContentChange() != WKContentVisibilityChange ? elementImplicitVisibility(element) : VISIBLE)
- {
- }
- ~CheckForVisibilityChangeOnRecalcStyle()
- {
- if (!WKObservingContentChanges())
- return;
- if (m_element->isInUserAgentShadowTree())
- return;
- auto* style = m_element->renderStyle();
- if (!style)
- return;
- if ((m_previousDisplay == NONE && style->display() != NONE) || (m_previousVisibility == HIDDEN && style->visibility() != HIDDEN)
- || (m_previousImplicitVisibility == HIDDEN && elementImplicitVisibility(m_element.get()) == VISIBLE))
- WKSetObservedContentChange(WKContentVisibilityChange);
- }
-private:
- RefPtr<Element> m_element;
- EDisplay m_previousDisplay;
- EVisibility m_previousVisibility;
- EVisibility m_previousImplicitVisibility;
-};
-#endif // PLATFORM(IOS)
-
</del><span class="cx"> void TreeResolver::pushParent(Element& element, const RenderStyle& style, Change change)
</span><span class="cx"> {
</span><span class="cx"> scope().selectorFilter.pushParent(&element);
</span><span class="lines">@@ -448,9 +390,6 @@
</span><span class="cx">
</span><span class="cx"> bool shouldResolve = shouldResolveElement(element, parent.change) || affectedByPreviousSibling;
</span><span class="cx"> if (shouldResolve) {
</span><del>-#if PLATFORM(IOS)
- CheckForVisibilityChangeOnRecalcStyle checkForVisibilityChange(&element, element.renderStyle());
-#endif
</del><span class="cx"> element.resetComputedStyle();
</span><span class="cx">
</span><span class="cx"> if (element.hasCustomStyleResolveCallbacks()) {
</span></span></pre>
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