<table><tr><td style="">maxrd2 added a comment.
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<div style="font-style: normal;
padding-bottom: 4px;">In <a href="https://phabricator.kde.org/D7648#142638" style="background-color: #e7e7e7;
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color: black;text-decoration: none;" rel="noreferrer">D7648#142638</a>, <a href="https://phabricator.kde.org/p/davidedmundson/" style="
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color: rgb(107, 116, 140);"><p>Thanks, but do you know why the apps datasource doesn't have that entry after a while?</p></div>
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<p>I've managed to get some more insight into original problem.<br />
It seems that after some system updates, desktop database gets updated, and that triggers a bunch of onSourcesChanged+onSourcesRemoved events, followed by a bunch onSourcesChanged+onSourceAdded events.<br />
Since I'm on rolling distro i get updates very frequently and this problem happens to me pretty frequently.</p>
<p>After .desktop database is updated these events are fired on 'apps' dataengine:</p>
<div class="remarkup-code-block" style="margin: 12px 0;" data-code-lang="text" data-sigil="remarkup-code-block"><pre class="remarkup-code" style="font: 11px/15px "Menlo", "Consolas", "Monaco", monospace; padding: 12px; margin: 0; background: rgba(71, 87, 120, 0.08);">.... bunch of events for various .desktop files....
Sep 08 00:44:19
onSourcesChanged()
onSourceDisconnected() org.kde.ksysguard.desktop
onConnectedSourcesChanged()
onSourceRemoved() org.kde.ksysguard.desktop
.... bunch of events for various .desktop files....
Sep 08 00:47:01
onSourceAdded() org.kde.ksysguard.desktop
.... bunch of events for various .desktop files....
Sep 08 00:47:43
onSourceRemoved() org.kde.ksysguard.desktop
.... bunch of events for various .desktop files....
Sep 08 00:49:54
onSourceAdded() org.kde.ksysguard.desktop
.... bunch of events for various .desktop files....</pre></div>
<p>No onSourceConnected() event was fired for "org.kde.ksysguard.desktop" after it has been disconnected -> removed -> added -> removed -> added.<br />
It wasn't connected to datasource again after it was updated and re-added and thus apps.data["org.kde.ksysguard.desktop"] became undefined.</p>
<p>I can look into fixing/changing apps dataengine and making it re-connect "lost" sources if that is desired.<br />
Is that supposed to happen automatically or is qml script supposed to re-connect "lost" sources during onSourceAdded event?</p></div></div><br /><div><strong>REPOSITORY</strong><div><div>R114 Plasma Addons</div></div></div><br /><div><strong>BRANCH</strong><div><div>launch-change</div></div></div><br /><div><strong>REVISION DETAIL</strong><div><a href="https://phabricator.kde.org/D7648" rel="noreferrer">https://phabricator.kde.org/D7648</a></div></div><br /><div><strong>To: </strong>maxrd2, Plasma, davidedmundson<br /><strong>Cc: </strong>Frameworks, davidedmundson, plasma-devel, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart<br /></div>