<?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>223446</bug_id>
          
          <creation_ts>2021-03-18 09:26:25 -0700</creation_ts>
          <short_desc>Handle empty bound size during animated resize</short_desc>
          <delta_ts>2021-03-19 15:34:49 -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>WebKit2</component>
          <version>WebKit Nightly Build</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</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="Sihui Liu">sihui_liu</reporter>
          <assigned_to name="Sihui Liu">sihui_liu</assigned_to>
          <cc>ggaren</cc>
    
    <cc>kkinnunen</cc>
    
    <cc>sihui_liu</cc>
    
    <cc>simon.fraser</cc>
    
    <cc>thorton</cc>
    
    <cc>webkit-bug-importer</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1741221</commentid>
    <comment_count>0</comment_count>
    <who name="Sihui Liu">sihui_liu</who>
    <bug_when>2021-03-18 09:26:25 -0700</bug_when>
    <thetext>...</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1741239</commentid>
    <comment_count>1</comment_count>
      <attachid>423612</attachid>
    <who name="Sihui Liu">sihui_liu</who>
    <bug_when>2021-03-18 10:01:03 -0700</bug_when>
    <thetext>Created attachment 423612
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1741390</commentid>
    <comment_count>2</comment_count>
      <attachid>423612</attachid>
    <who name="Tim Horton">thorton</who>
    <bug_when>2021-03-18 13:44:15 -0700</bug_when>
    <thetext>Comment on attachment 423612
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=423612&amp;action=review

&gt; Source/WebKit/UIProcess/API/Cocoa/WKWebViewInternal.h:254
&gt; +    CGRect _validOldBounds;

Probably worth giving these names that make it clear they&apos;re just about (rare, SPI) animated resize; these names seem... more generic.

Maybe stick them up with _animatedResizeOriginalContentWidth?

&gt; Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:-2910
&gt; -    ASSERT_WITH_MESSAGE(!(_viewLayoutSizeOverride &amp;&amp; newViewLayoutSize.isEmpty()), &quot;Clients controlling the layout size should maintain a valid layout size to minimize layouts.&quot;);

Is there a reason we&apos;re not just fixing the clients? (and maybe making this louder?). Since it&apos;s SPI, it should be achievable, and it is wasted work otherwise.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1741426</commentid>
    <comment_count>3</comment_count>
      <attachid>423658</attachid>
    <who name="Sihui Liu">sihui_liu</who>
    <bug_when>2021-03-18 14:31:49 -0700</bug_when>
    <thetext>Created attachment 423658
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1741514</commentid>
    <comment_count>4</comment_count>
      <attachid>423671</attachid>
    <who name="Sihui Liu">sihui_liu</who>
    <bug_when>2021-03-18 16:56:08 -0700</bug_when>
    <thetext>Created attachment 423671
Patch for landing</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1741520</commentid>
    <comment_count>5</comment_count>
    <who name="EWS">ews-feeder</who>
    <bug_when>2021-03-18 17:25:21 -0700</bug_when>
    <thetext>Committed r274692: &lt;https://commits.webkit.org/r274692&gt;

All reviewed patches have been landed. Closing bug and clearing flags on attachment 423671.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1741521</commentid>
    <comment_count>6</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2021-03-18 17:26:17 -0700</bug_when>
    <thetext>&lt;rdar://problem/75598829&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1741769</commentid>
    <comment_count>7</comment_count>
    <who name="Geoffrey Garen">ggaren</who>
    <bug_when>2021-03-19 10:24:58 -0700</bug_when>
    <thetext>&gt; Is there a reason we&apos;re not just fixing the clients? (and maybe making this
&gt; louder?). Since it&apos;s SPI, it should be achievable, and it is wasted work
&gt; otherwise.

I think the answer -- based on ChangeLog and conversation with Sihui -- is that auto layout just sometimes does this (very temporarily), outside of direct client control.

Maybe this means we should file a Radar for auto layout.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1741934</commentid>
    <comment_count>8</comment_count>
    <who name="Tim Horton">thorton</who>
    <bug_when>2021-03-19 15:34:49 -0700</bug_when>
    <thetext>(In reply to Geoffrey Garen from comment #7)
&gt; &gt; Is there a reason we&apos;re not just fixing the clients? (and maybe making this
&gt; &gt; louder?). Since it&apos;s SPI, it should be achievable, and it is wasted work
&gt; &gt; otherwise.
&gt; 
&gt; I think the answer -- based on ChangeLog and conversation with Sihui -- is
&gt; that auto layout just sometimes does this (very temporarily), outside of
&gt; direct client control.
&gt; 
&gt; Maybe this means we should file a Radar for auto layout.

Yeah, she explained offline (and updated the changelog)! I do think we should make sure there is a radar, since it seems wasteful.</thetext>
  </long_desc>
      
          <attachment
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            <attachid>423612</attachid>
            <date>2021-03-18 10:01:03 -0700</date>
            <delta_ts>2021-03-18 14:31:48 -0700</delta_ts>
            <desc>Patch</desc>
            <filename>bug-223446-20210318100103.patch</filename>
            <type>text/plain</type>
            <size>7224</size>
            <attacher name="Sihui Liu">sihui_liu</attacher>
            
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          </attachment>
          <attachment
              isobsolete="1"
              ispatch="1"
              isprivate="0"
          >
            <attachid>423658</attachid>
            <date>2021-03-18 14:31:49 -0700</date>
            <delta_ts>2021-03-18 16:56:05 -0700</delta_ts>
            <desc>Patch</desc>
            <filename>bug-223446-20210318143149.patch</filename>
            <type>text/plain</type>
            <size>7855</size>
            <attacher name="Sihui Liu">sihui_liu</attacher>
            
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          </attachment>
          <attachment
              isobsolete="0"
              ispatch="1"
              isprivate="0"
          >
            <attachid>423671</attachid>
            <date>2021-03-18 16:56:08 -0700</date>
            <delta_ts>2021-03-18 17:25:22 -0700</delta_ts>
            <desc>Patch for landing</desc>
            <filename>bug-223446-20210318165607.patch</filename>
            <type>text/plain</type>
            <size>7952</size>
            <attacher name="Sihui Liu">sihui_liu</attacher>
            
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</data>

          </attachment>
      

    </bug>

</bugzilla>