Ori.livneh has uploaded a new change for review.

  https://gerrit.wikimedia.org/r/258227

Change subject: [WIP] Mark timing for first image load
......................................................................

[WIP] Mark timing for first image load

Add an onload snippet to the first <img> tag on the page for an image that is
bigger than 50px * 50px that uses the user timing API to mark a 
'firstImageLoadEnd'
timing.

Bug: T115600
Change-Id: I1df544f6ff7bf359a8d3ee86769a9f0140018d5b
---
M NavigationTiming.php
1 file changed, 17 insertions(+), 0 deletions(-)


  git pull 
ssh://gerrit.wikimedia.org:29418/mediawiki/extensions/NavigationTiming 
refs/changes/27/258227/1

diff --git a/NavigationTiming.php b/NavigationTiming.php
index d58a80f..b2e4829 100644
--- a/NavigationTiming.php
+++ b/NavigationTiming.php
@@ -58,6 +58,23 @@
        'SaveTiming'       => 12236257,
 );
 
+/**
+ * Add an onload snippet to the first <img> tag on the page for an image that 
is bigger
+ * than 50px * 50px that uses the user timing API to mark a 
'firstImageLoadEnd' timing.
+ */
+$wgHooks[ 'ThumbnailBeforeProduceHTML' ][] = function ( $thumbnail, &$attribs, 
&$linkAttribs ) {
+       static $foundFirstImage = false;
+
+       if (
+               !$foundFirstImage
+               isset( $attribs['width'] ) && $attribs['width'] >= 50 &&
+               isset( $attribs['height'] ) && $attribs['height'] >= 50
+       ) {
+               $foundFirstImage = true;
+               $attribs['onload'] = "mwPerformance.mark('firstImageLoadEnd')";
+       }
+};
+
 $wgHooks[ 'BeforePageDisplay' ][] = function ( &$out, &$skin ) {
        $out->addModules( 'ext.navigationTiming' );
        return true;

-- 
To view, visit https://gerrit.wikimedia.org/r/258227
To unsubscribe, visit https://gerrit.wikimedia.org/r/settings

Gerrit-MessageType: newchange
Gerrit-Change-Id: I1df544f6ff7bf359a8d3ee86769a9f0140018d5b
Gerrit-PatchSet: 1
Gerrit-Project: mediawiki/extensions/NavigationTiming
Gerrit-Branch: master
Gerrit-Owner: Ori.livneh <[email protected]>

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