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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/162447">162447</a></dd>
<dt>Author</dt> <dd>commit-queue@webkit.org</dd>
<dt>Date</dt> <dd>2014-01-21 10:06:06 -0800 (Tue, 21 Jan 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>Unreviewed, rolling out <a href="http://trac.webkit.org/projects/webkit/changeset/162354">r162354</a>.
http://trac.webkit.org/changeset/162354
https://bugs.webkit.org/show_bug.cgi?id=127354
Appears to have broken accessibility in a non-trivial way
(Requested by ap on #webkit).
* platform/ScrollView.cpp:
(WebCore::ScrollView::updateScrollbars):</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreplatformScrollViewcpp">trunk/Source/WebCore/platform/ScrollView.cpp</a></li>
</ul>
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<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (162446 => 162447)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog 2014-01-21 17:23:54 UTC (rev 162446)
+++ trunk/Source/WebCore/ChangeLog 2014-01-21 18:06:06 UTC (rev 162447)
</span><span class="lines">@@ -1,5 +1,17 @@
</span><span class="cx"> 2014-01-21 Commit Queue <commit-queue@webkit.org>
</span><span class="cx">
</span><ins>+ Unreviewed, rolling out r162354.
+ http://trac.webkit.org/changeset/162354
+ https://bugs.webkit.org/show_bug.cgi?id=127354
+
+ Appears to have broken accessibility in a non-trivial way
+ (Requested by ap on #webkit).
+
+ * platform/ScrollView.cpp:
+ (WebCore::ScrollView::updateScrollbars):
+
+2014-01-21 Commit Queue <commit-queue@webkit.org>
+
</ins><span class="cx"> Unreviewed, rolling out r162445.
</span><span class="cx"> http://trac.webkit.org/changeset/162445
</span><span class="cx"> https://bugs.webkit.org/show_bug.cgi?id=127351
</span></span></pre></div>
<a id="trunkSourceWebCoreplatformScrollViewcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/platform/ScrollView.cpp (162446 => 162447)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/platform/ScrollView.cpp 2014-01-21 17:23:54 UTC (rev 162446)
+++ trunk/Source/WebCore/platform/ScrollView.cpp 2014-01-21 18:06:06 UTC (rev 162447)
</span><span class="lines">@@ -505,12 +505,10 @@
</span><span class="cx"> if (m_inUpdateScrollbars || prohibitsScrolling() || platformWidget())
</span><span class="cx"> return;
</span><span class="cx">
</span><del>- bool hasOverlayScrollbars = (!m_horizontalScrollbar || m_horizontalScrollbar->isOverlayScrollbar()) && (!m_verticalScrollbar || m_verticalScrollbar->isOverlayScrollbar());
-
</del><span class="cx"> // If we came in here with the view already needing a layout, then go ahead and do that
</span><span class="cx"> // first. (This will be the common case, e.g., when the page changes due to window resizing for example).
</span><span class="cx"> // This layout will not re-enter updateScrollbars and does not count towards our max layout pass total.
</span><del>- if (!m_scrollbarsSuppressed && !hasOverlayScrollbars) {
</del><ins>+ if (!m_scrollbarsSuppressed) {
</ins><span class="cx"> m_inUpdateScrollbars = true;
</span><span class="cx"> visibleContentsResized();
</span><span class="cx"> m_inUpdateScrollbars = false;
</span><span class="lines">@@ -550,31 +548,30 @@
</span><span class="cx"> IntSize docSize = totalContentsSize();
</span><span class="cx"> IntSize fullVisibleSize = visibleContentRect(IncludeScrollbars).size();
</span><span class="cx">
</span><del>- if (hScroll == ScrollbarAuto)
</del><ins>+ if (hScroll == ScrollbarAuto) {
</ins><span class="cx"> newHasHorizontalScrollbar = docSize.width() > visibleWidth();
</span><del>- if (vScroll == ScrollbarAuto)
</del><ins>+ if (newHasHorizontalScrollbar && !m_updateScrollbarsPass && docSize.width() <= fullVisibleSize.width() && docSize.height() <= fullVisibleSize.height())
+ newHasHorizontalScrollbar = false;
+ }
+ if (vScroll == ScrollbarAuto) {
</ins><span class="cx"> newHasVerticalScrollbar = docSize.height() > visibleHeight();
</span><ins>+ if (newHasVerticalScrollbar && !m_updateScrollbarsPass && docSize.width() <= fullVisibleSize.width() && docSize.height() <= fullVisibleSize.height())
+ newHasVerticalScrollbar = false;
+ }
</ins><span class="cx">
</span><ins>+ // If we ever turn one scrollbar off, always turn the other one off too. Never ever
+ // try to both gain/lose a scrollbar in the same pass.
</ins><span class="cx"> bool needAnotherPass = false;
</span><del>- if (!hasOverlayScrollbars) {
- // If we ever turn one scrollbar off, always turn the other one off too. Never ever
- // try to both gain/lose a scrollbar in the same pass.
- if (!m_updateScrollbarsPass && docSize.width() <= fullVisibleSize.width() && docSize.height() <= fullVisibleSize.height()) {
- if (hScroll == ScrollbarAuto)
- newHasHorizontalScrollbar = false;
- if (vScroll == ScrollbarAuto)
- newHasVerticalScrollbar = false;
- }
- if (!newHasHorizontalScrollbar && hasHorizontalScrollbar && vScroll != ScrollbarAlwaysOn) {
- newHasVerticalScrollbar = false;
- needAnotherPass = true;
- }
- if (!newHasVerticalScrollbar && hasVerticalScrollbar && hScroll != ScrollbarAlwaysOn) {
- newHasHorizontalScrollbar = false;
- needAnotherPass = true;
- }
</del><ins>+ if (!newHasHorizontalScrollbar && hasHorizontalScrollbar && vScroll != ScrollbarAlwaysOn) {
+ newHasVerticalScrollbar = false;
+ needAnotherPass = true;
</ins><span class="cx"> }
</span><span class="cx">
</span><ins>+ if (!newHasVerticalScrollbar && hasVerticalScrollbar && hScroll != ScrollbarAlwaysOn) {
+ newHasHorizontalScrollbar = false;
+ needAnotherPass = true;
+ }
+
</ins><span class="cx"> if (hasHorizontalScrollbar != newHasHorizontalScrollbar && (hasHorizontalScrollbar || !avoidScrollbarCreation())) {
</span><span class="cx"> if (scrollOrigin().y() && !newHasHorizontalScrollbar)
</span><span class="cx"> ScrollableArea::setScrollOrigin(IntPoint(scrollOrigin().x(), scrollOrigin().y() - m_horizontalScrollbar->height()));
</span></span></pre>
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