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<!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>217400</bug_id>
          
          <creation_ts>2020-10-06 12:08:21 -0700</creation_ts>
          <short_desc>Adjust heuristic for checking whether view reaches visually non-empty state</short_desc>
          <delta_ts>2020-10-29 12:15:55 -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>New Bugs</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>darin</cc>
    
    <cc>ggaren</cc>
    
    <cc>koivisto</cc>
    
    <cc>webkit-bug-importer</cc>
    
    <cc>zalan</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1695259</commentid>
    <comment_count>0</comment_count>
    <who name="Sihui Liu">sihui_liu</who>
    <bug_when>2020-10-06 12:08:21 -0700</bug_when>
    <thetext>We decide that view reaches visually non-empty state and fire corresponding events when main document is parsed and no more content (font or css resources) to be loaded. 
An edge case is when the page has an empty document and depends on async scripts to fill content (like wpt.fyi), then we may fire the events too early.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1695263</commentid>
    <comment_count>1</comment_count>
    <who name="Sihui Liu">sihui_liu</who>
    <bug_when>2020-10-06 12:10:09 -0700</bug_when>
    <thetext>rdar://problem/69894849</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1695264</commentid>
    <comment_count>2</comment_count>
      <attachid>410677</attachid>
    <who name="Sihui Liu">sihui_liu</who>
    <bug_when>2020-10-06 12:13:17 -0700</bug_when>
    <thetext>Created attachment 410677
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1695568</commentid>
    <comment_count>3</comment_count>
      <attachid>410677</attachid>
    <who name="Darin Adler">darin</who>
    <bug_when>2020-10-07 09:13:34 -0700</bug_when>
    <thetext>Comment on attachment 410677
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=410677&amp;action=review

&gt; Source/WebCore/page/FrameView.cpp:4580
&gt; +            bool hasScriptResource = false;

Should be named isLoadingScript or something more like that. This definitely does not answer the question, “Does this have a script resource?”

&gt; Source/WebCore/page/FrameView.cpp:4584
&gt; +                auto resourceType = resource.value-&gt;type();

In this narrow context just “type” would be a good variable name.

&gt; Source/WebCore/page/FrameView.cpp:4587
&gt; +                if (!hasScriptResource &amp;&amp; resourceType == CachedResource::Type::Script)

Don’t need to check !hasScriptResource here.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1695577</commentid>
    <comment_count>4</comment_count>
      <attachid>410754</attachid>
    <who name="Sihui Liu">sihui_liu</who>
    <bug_when>2020-10-07 10:00:20 -0700</bug_when>
    <thetext>Created attachment 410754
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1695625</commentid>
    <comment_count>5</comment_count>
      <attachid>410754</attachid>
    <who name="Geoffrey Garen">ggaren</who>
    <bug_when>2020-10-07 12:37:58 -0700</bug_when>
    <thetext>Comment on attachment 410754
Patch

r=me

Please double-check the iOS-wk2 EWS failure.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1695630</commentid>
    <comment_count>6</comment_count>
    <who name="alan">zalan</who>
    <bug_when>2020-10-07 12:42:01 -0700</bug_when>
    <thetext>I hope we eventually send out the non-empty milestone even when the script does not generate any content.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1695631</commentid>
    <comment_count>7</comment_count>
    <who name="Geoffrey Garen">ggaren</who>
    <bug_when>2020-10-07 12:46:50 -0700</bug_when>
    <thetext>(In reply to zalan from comment #6)
&gt; I hope we eventually send out the non-empty milestone even when the script
&gt; does not generate any content.

Good point. I think you can add an API test for this by using an empty document with a &lt;script src=&quot;...&quot;&gt; that points to an empty script, and then verifying that the visually non-empty milestone fires. Seems worth doing (but probably doesn&apos;t need to block landing the patch).</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1695633</commentid>
    <comment_count>8</comment_count>
    <who name="Geoffrey Garen">ggaren</who>
    <bug_when>2020-10-07 12:50:22 -0700</bug_when>
    <thetext>Now that I think about it, the test should also verify this new behavior: that the mouth stone does not fire before the script has loaded. You can detect when the script loads by using the api testing url scheme. Or by having the script signal the api test somehow.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1695680</commentid>
    <comment_count>9</comment_count>
      <attachid>410781</attachid>
    <who name="Sihui Liu">sihui_liu</who>
    <bug_when>2020-10-07 14:37:13 -0700</bug_when>
    <thetext>Created attachment 410781
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1695697</commentid>
    <comment_count>10</comment_count>
      <attachid>410786</attachid>
    <who name="Sihui Liu">sihui_liu</who>
    <bug_when>2020-10-07 14:54:30 -0700</bug_when>
    <thetext>Created attachment 410786
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1695765</commentid>
    <comment_count>11</comment_count>
    <who name="EWS">ews-feeder</who>
    <bug_when>2020-10-07 17:53:21 -0700</bug_when>
    <thetext>ChangeLog entry in Tools/ChangeLog contains OOPS!.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1695916</commentid>
    <comment_count>12</comment_count>
      <attachid>410849</attachid>
    <who name="Sihui Liu">sihui_liu</who>
    <bug_when>2020-10-08 09:06:41 -0700</bug_when>
    <thetext>Created attachment 410849
Patch for landing</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1695962</commentid>
    <comment_count>13</comment_count>
    <who name="EWS">ews-feeder</who>
    <bug_when>2020-10-08 10:59:54 -0700</bug_when>
    <thetext>Committed r268192: &lt;https://trac.webkit.org/changeset/268192&gt;

All reviewed patches have been landed. Closing bug and clearing flags on attachment 410849.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1702801</commentid>
    <comment_count>14</comment_count>
    <who name="Sihui Liu">sihui_liu</who>
    <bug_when>2020-10-29 11:44:21 -0700</bug_when>
    <thetext>Reopening to attach new patch.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1702802</commentid>
    <comment_count>15</comment_count>
      <attachid>412670</attachid>
    <who name="Sihui Liu">sihui_liu</who>
    <bug_when>2020-10-29 11:44:22 -0700</bug_when>
    <thetext>Created attachment 412670
Patch for landing</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1702813</commentid>
    <comment_count>16</comment_count>
    <who name="EWS">ews-feeder</who>
    <bug_when>2020-10-29 12:15:54 -0700</bug_when>
    <thetext>Committed r269160: &lt;https://trac.webkit.org/changeset/269160&gt;

All reviewed patches have been landed. Closing bug and clearing flags on attachment 412670.</thetext>
  </long_desc>
      
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          </attachment>
          <attachment
              isobsolete="1"
              ispatch="1"
              isprivate="0"
          >
            <attachid>410781</attachid>
            <date>2020-10-07 14:37:13 -0700</date>
            <delta_ts>2020-10-07 14:54:50 -0700</delta_ts>
            <desc>Patch</desc>
            <filename>bug-217400-20201007143713.patch</filename>
            <type>text/plain</type>
            <size>10701</size>
            <attacher name="Sihui Liu">sihui_liu</attacher>
            
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<flag name="commit-queue"
          id="426829"
          type_id="3"
          status="-"
          setter="ews-feeder"
    />
          </attachment>
          <attachment
              isobsolete="1"
              ispatch="1"
              isprivate="0"
          >
            <attachid>410786</attachid>
            <date>2020-10-07 14:54:30 -0700</date>
            <delta_ts>2020-10-08 09:06:39 -0700</delta_ts>
            <desc>Patch</desc>
            <filename>bug-217400-20201007145429.patch</filename>
            <type>text/plain</type>
            <size>11231</size>
            <attacher name="Sihui Liu">sihui_liu</attacher>
            
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          </attachment>
          <attachment
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              ispatch="1"
              isprivate="0"
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            <attachid>410849</attachid>
            <date>2020-10-08 09:06:41 -0700</date>
            <delta_ts>2020-10-29 11:44:18 -0700</delta_ts>
            <desc>Patch for landing</desc>
            <filename>bug-217400-20201008090640.patch</filename>
            <type>text/plain</type>
            <size>11355</size>
            <attacher name="Sihui Liu">sihui_liu</attacher>
            
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          </attachment>
          <attachment
              isobsolete="0"
              ispatch="1"
              isprivate="0"
          >
            <attachid>412670</attachid>
            <date>2020-10-29 11:44:22 -0700</date>
            <delta_ts>2020-10-29 12:15:54 -0700</delta_ts>
            <desc>Patch for landing</desc>
            <filename>bug-217400-20201029114420.patch</filename>
            <type>text/plain</type>
            <size>10463</size>
            <attacher name="Sihui Liu">sihui_liu</attacher>
            
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          </attachment>
      

    </bug>

</bugzilla>