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https://issues.apache.org/jira/browse/NETBEANS-2326?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Emilian Bold updated NETBEANS-2326:
-----------------------------------
Attachment: 2326-poc.zip
> Explorer API views (ListView, TreeTableView) flicker when filtering nodes
> -------------------------------------------------------------------------
>
> Key: NETBEANS-2326
> URL: https://issues.apache.org/jira/browse/NETBEANS-2326
> Project: NetBeans
> Issue Type: Bug
> Components: platform - Explorer, platform - Nodes
> Affects Versions: 8.2, 10.0
> Reporter: Emilian Bold
> Priority: Major
> Attachments: 2326-poc.zip, dummy-nodes.png, filternode-flicker.mov
>
>
> For a brief second the Explorer API views show dummy nodes for a filtered
> node.
> The children filtering is done the 'usual' way:
> {{new FilterNode.Children(node) {}}
> {{ @Override}}
> {{ protected Node[] createNodes(Node key) {}}
> {{ if (rule(key)) {}}
> {{ return super.createNodes(key);}}
> {{ } else {}}
> {{ //filter out}}
> {{ return new Node[0];}}
> {{ }}}
> }
> and what happens is that the ListView / TreeTableView GUI does *not* show
> only the allowed nodes. It shows all the original children for a split second
> then it shows the filtered nodes.
> See the attached screenshot and video for a general idea. I'm also going to
> attach a small project.
> Oddly enough Children.Keys(boolean lazy)
> [http://bits.netbeans.org/dev/javadoc/org-openide-nodes/org/openide/nodes/Children.Keys.html#Keys-boolean-]
> does mention a "dummy" Node but it was never clear what that is and I never
> imagined it could go all the way to the UI.
>
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