<?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>178842</bug_id>
          
          <creation_ts>2017-10-25 18:51:15 -0700</creation_ts>
          <short_desc>Fix issues with WebView subframe painting</short_desc>
          <delta_ts>2017-11-15 12:43:44 -0800</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>WebKit Misc.</component>
          <version>WebKit Nightly Build</version>
          <rep_platform>Mac</rep_platform>
          <op_sys>macOS 10.13</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>FIXED</resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>InRadar, PlatformOnly</keywords>
          <priority>P1</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Simon Fraser (smfr)">simon.fraser</reporter>
          <assigned_to name="Simon Fraser (smfr)">simon.fraser</assigned_to>
          <cc>commit-queue</cc>
    
    <cc>dbates</cc>
    
    <cc>simon.fraser</cc>
    
    <cc>webkit-bug-importer</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1364626</commentid>
    <comment_count>0</comment_count>
    <who name="Simon Fraser (smfr)">simon.fraser</who>
    <bug_when>2017-10-25 18:51:15 -0700</bug_when>
    <thetext>Fix issues with WebView subframe painting</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1364627</commentid>
    <comment_count>1</comment_count>
      <attachid>324940</attachid>
    <who name="Simon Fraser (smfr)">simon.fraser</who>
    <bug_when>2017-10-25 18:53:17 -0700</bug_when>
    <thetext>Created attachment 324940
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1364654</commentid>
    <comment_count>2</comment_count>
      <attachid>324940</attachid>
    <who name="Daniel Bates">dbates</who>
    <bug_when>2017-10-25 20:28:37 -0700</bug_when>
    <thetext>Comment on attachment 324940
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=324940&amp;action=review

&gt; Source/WebKitLegacy/mac/ChangeLog:11
&gt; +        WebHTMLView overrides some NSView internal methods to make sure that AppKit doesn&apos;t paint
&gt; +        subframes (WebKit controls subframe painting). The method signature of one of these changed in macOS
&gt; +        High Sierra, so match the new signature.

Is there an equivalent to C++11&apos;s override keyword to help us catch such changes in the future and/or can we write a unit test to ensure this does not regress?</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1364895</commentid>
    <comment_count>3</comment_count>
    <who name="Simon Fraser (smfr)">simon.fraser</who>
    <bug_when>2017-10-26 10:36:42 -0700</bug_when>
    <thetext>(In reply to Daniel Bates from comment #2)
&gt; Comment on attachment 324940 [details]
&gt; Patch
&gt; 
&gt; View in context:
&gt; https://bugs.webkit.org/attachment.cgi?id=324940&amp;action=review
&gt; 
&gt; &gt; Source/WebKitLegacy/mac/ChangeLog:11
&gt; &gt; +        WebHTMLView overrides some NSView internal methods to make sure that AppKit doesn&apos;t paint
&gt; &gt; +        subframes (WebKit controls subframe painting). The method signature of one of these changed in macOS
&gt; &gt; +        High Sierra, so match the new signature.
&gt; 
&gt; Is there an equivalent to C++11&apos;s override keyword to help us catch such
&gt; changes in the future and/or can we write a unit test to ensure this does
&gt; not regress?

The only think I can think of is a runtime assertion that NSView implements certain functions.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1364990</commentid>
    <comment_count>4</comment_count>
      <attachid>324940</attachid>
    <who name="WebKit Commit Bot">commit-queue</who>
    <bug_when>2017-10-26 13:13:51 -0700</bug_when>
    <thetext>Comment on attachment 324940
Patch

Clearing flags on attachment: 324940

Committed r224040: &lt;https://trac.webkit.org/changeset/224040&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1364991</commentid>
    <comment_count>5</comment_count>
    <who name="WebKit Commit Bot">commit-queue</who>
    <bug_when>2017-10-26 13:13:52 -0700</bug_when>
    <thetext>All reviewed patches have been landed.  Closing bug.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1372222</commentid>
    <comment_count>6</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2017-11-15 12:43:44 -0800</bug_when>
    <thetext>&lt;rdar://problem/35568031&gt;</thetext>
  </long_desc>
      
          <attachment
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          >
            <attachid>324940</attachid>
            <date>2017-10-25 18:53:17 -0700</date>
            <delta_ts>2017-10-26 13:13:51 -0700</delta_ts>
            <desc>Patch</desc>
            <filename>bug-178842-20171025185317.patch</filename>
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            <size>4651</size>
            <attacher name="Simon Fraser (smfr)">simon.fraser</attacher>
            
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