<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!DOCTYPE bugzilla SYSTEM "https://bugs.webkit.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>148450</bug_id>
          
          <creation_ts>2015-08-25 16:25:44 -0700</creation_ts>
          <short_desc>Wheel Event Not Fired For `body,html { height:100% }`</short_desc>
          <delta_ts>2016-04-29 09:53:39 -0700</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>Layout and Rendering</component>
          <version>WebKit Nightly Build</version>
          <rep_platform>All</rep_platform>
          <op_sys>All</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>FIXED</resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>InRadar</keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Brent Fulgham">bfulgham</reporter>
          <assigned_to name="Simon Fraser (smfr)">simon.fraser</assigned_to>
          <cc>bdakin</cc>
    
    <cc>bfulgham</cc>
    
    <cc>commit-queue</cc>
    
    <cc>dbates</cc>
    
    <cc>dino</cc>
    
    <cc>simon.fraser</cc>
    
    <cc>thorton</cc>
    
    <cc>tonikitoo</cc>
    
    <cc>webkit-bug-importer</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1120765</commentid>
    <comment_count>0</comment_count>
      <attachid>259898</attachid>
    <who name="Brent Fulgham">bfulgham</who>
    <bug_when>2015-08-25 16:25:44 -0700</bug_when>
    <thetext>Created attachment 259898
Test Case showing the improper behavior

From Chrome Developers:
This *was* one of the most starred bug for Chromium (800 stars). With the help of the community we got this FIXED in Chrome v45.

https://code.google.com/p/chromium/issues/detail?id=500144

We NEED WebKit to fix it as well!

Wheel event should work like other mouse events (click) and fire in the popular
 `body,html { height:100% }` case.

Steps to Reproduce:
Test page: http://output.jsbin.com/kapogi 
(also attached as a file)

/* 
 * The problem is caused by an element 
 * bigger than viewport, and body,html
 * having 100% height.
 */
html, body {
  height: 100%;
}

#page {
  position: absolute;
  width: 50%;
  height: 1000%;
}

Have an `onwheel` or `onmousewheel` handler on the document.

Expected Results:
Wheel events like all other mouse events should fire on the sides (the test page shows how click fires correctly).

Actual Results:
After passing the html,body { height:100% } limit the wheel events are no longer fired (on the sides).</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1120766</commentid>
    <comment_count>1</comment_count>
    <who name="Brent Fulgham">bfulgham</who>
    <bug_when>2015-08-25 16:25:58 -0700</bug_when>
    <thetext>&lt;rdar://problem/22376037&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1120791</commentid>
    <comment_count>2</comment_count>
      <attachid>259907</attachid>
    <who name="Brent Fulgham">bfulgham</who>
    <bug_when>2015-08-25 17:50:12 -0700</bug_when>
    <thetext>Created attachment 259907
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1121055</commentid>
    <comment_count>3</comment_count>
    <who name="Beth Dakin">bdakin</who>
    <bug_when>2015-08-26 14:06:39 -0700</bug_when>
    <thetext>I think we need to understand this fix more. I don&apos;t understand why it works, and it seems like an indirect and maybe incorrect way to get the desired behavior.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1122064</commentid>
    <comment_count>4</comment_count>
      <attachid>259907</attachid>
    <who name="Sam Weinig">sam</who>
    <bug_when>2015-08-30 10:54:45 -0700</bug_when>
    <thetext>Comment on attachment 259907
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=259907&amp;action=review

&gt; Source/WebCore/page/EventHandler.cpp:2717
&gt; +    HitTestRequest request(HitTestRequest::ReadOnly | HitTestRequest::Active| HitTestRequest::DisallowShadowContent);

Your changelog says that this will &quot;Fall back to document&quot;, but it is unclear why.  Can you explain in a bit more detail what is going on here? Also, you are missing a space after Active.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1125596</commentid>
    <comment_count>5</comment_count>
      <attachid>259907</attachid>
    <who name="Simon Fraser (smfr)">simon.fraser</who>
    <bug_when>2015-09-14 09:14:53 -0700</bug_when>
    <thetext>Comment on attachment 259907
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=259907&amp;action=review

&gt; Source/WebCore/ChangeLog:12
&gt; +        This change was adapted from Blink r198210:
&gt; +        http://src.chromium.org/viewvc/blink?view=rev&amp;rev=198210  

I would like an explanation for why setting Active gives the desired behavior. The Blink code has a FIXME here.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1127300</commentid>
    <comment_count>6</comment_count>
    <who name="Simon Fraser (smfr)">simon.fraser</who>
    <bug_when>2015-09-18 16:55:20 -0700</bug_when>
    <thetext>rdar://problem/22756010</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1188507</commentid>
    <comment_count>7</comment_count>
      <attachid>277673</attachid>
    <who name="Simon Fraser (smfr)">simon.fraser</who>
    <bug_when>2016-04-28 22:01:59 -0700</bug_when>
    <thetext>Created attachment 277673
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1188643</commentid>
    <comment_count>8</comment_count>
      <attachid>277673</attachid>
    <who name="Brent Fulgham">bfulgham</who>
    <bug_when>2016-04-29 09:32:54 -0700</bug_when>
    <thetext>Comment on attachment 277673
Patch

r=me. \0/</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1188660</commentid>
    <comment_count>9</comment_count>
      <attachid>277673</attachid>
    <who name="WebKit Commit Bot">commit-queue</who>
    <bug_when>2016-04-29 09:53:33 -0700</bug_when>
    <thetext>Comment on attachment 277673
Patch

Clearing flags on attachment: 277673

Committed r200247: &lt;http://trac.webkit.org/changeset/200247&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1188661</commentid>
    <comment_count>10</comment_count>
    <who name="WebKit Commit Bot">commit-queue</who>
    <bug_when>2016-04-29 09:53:39 -0700</bug_when>
    <thetext>All reviewed patches have been landed.  Closing bug.</thetext>
  </long_desc>
      
          <attachment
              isobsolete="0"
              ispatch="0"
              isprivate="0"
          >
            <attachid>259898</attachid>
            <date>2015-08-25 16:25:44 -0700</date>
            <delta_ts>2015-08-25 16:25:44 -0700</delta_ts>
            <desc>Test Case showing the improper behavior</desc>
            <filename>wheel_test.html</filename>
            <type>text/html</type>
            <size>10329</size>
            <attacher name="Brent Fulgham">bfulgham</attacher>
            
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          </attachment>
          <attachment
              isobsolete="1"
              ispatch="1"
              isprivate="0"
          >
            <attachid>259907</attachid>
            <date>2015-08-25 17:50:12 -0700</date>
            <delta_ts>2016-04-28 22:01:55 -0700</delta_ts>
            <desc>Patch</desc>
            <filename>bug-148450-20150825175001.patch</filename>
            <type>text/plain</type>
            <size>25222</size>
            <attacher name="Brent Fulgham">bfulgham</attacher>
            
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          </attachment>
          <attachment
              isobsolete="0"
              ispatch="1"
              isprivate="0"
          >
            <attachid>277673</attachid>
            <date>2016-04-28 22:01:59 -0700</date>
            <delta_ts>2016-04-29 09:53:33 -0700</delta_ts>
            <desc>Patch</desc>
            <filename>bug-148450-20160428220230.patch</filename>
            <type>text/plain</type>
            <size>5790</size>
            <attacher name="Simon Fraser (smfr)">simon.fraser</attacher>
            
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          </attachment>
      

    </bug>

</bugzilla>