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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/211377">211377</a></dd>
<dt>Author</dt> <dd>wenson_hsieh@apple.com</dd>
<dt>Date</dt> <dd>2017-01-30 10:59:36 -0800 (Mon, 30 Jan 2017)</dd>
</dl>
<h3>Log Message</h3>
<pre>Web content process crashes when initiating a drag on a very large image
https://bugs.webkit.org/show_bug.cgi?id=167564
Reviewed by Beth Dakin.
If we begin dragging an image element that is too large to show the cached image for, we will show an image file
icon instead of the cached image. This may return null if createDragImageIconForCachedImageFilename is
unimplemented, so in the meantime, we should not assume that dragImage will always exist before calling into
doSystemDrag in doImageDrag and bail from the drag operation if that is the case.
* page/DragController.cpp:
(WebCore::DragController::doImageDrag):</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCorepageDragControllercpp">trunk/Source/WebCore/page/DragController.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 (211376 => 211377)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog 2017-01-30 18:45:21 UTC (rev 211376)
+++ trunk/Source/WebCore/ChangeLog 2017-01-30 18:59:36 UTC (rev 211377)
</span><span class="lines">@@ -1,3 +1,18 @@
</span><ins>+2017-01-30 Wenson Hsieh <wenson_hsieh@apple.com>
+
+ Web content process crashes when initiating a drag on a very large image
+ https://bugs.webkit.org/show_bug.cgi?id=167564
+
+ Reviewed by Beth Dakin.
+
+ If we begin dragging an image element that is too large to show the cached image for, we will show an image file
+ icon instead of the cached image. This may return null if createDragImageIconForCachedImageFilename is
+ unimplemented, so in the meantime, we should not assume that dragImage will always exist before calling into
+ doSystemDrag in doImageDrag and bail from the drag operation if that is the case.
+
+ * page/DragController.cpp:
+ (WebCore::DragController::doImageDrag):
+
</ins><span class="cx"> 2017-01-30 Chris Dumez <cdumez@apple.com>
</span><span class="cx">
</span><span class="cx"> Update DiagnosticLoggingClient::logDiagnosticMessageWithValue() to take in the value as a double
</span></span></pre></div>
<a id="trunkSourceWebCorepageDragControllercpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/page/DragController.cpp (211376 => 211377)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/page/DragController.cpp 2017-01-30 18:45:21 UTC (rev 211376)
+++ trunk/Source/WebCore/page/DragController.cpp 2017-01-30 18:59:36 UTC (rev 211377)
</span><span class="lines">@@ -977,6 +977,9 @@
</span><span class="cx"> }
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+ if (!dragImage)
+ return;
+
</ins><span class="cx"> dragImageOffset = mouseDownPoint + scaledOrigin;
</span><span class="cx"> doSystemDrag(dragImage, dragImageOffset, dragOrigin, dataTransfer, frame, false);
</span><span class="cx">
</span></span></pre>
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