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https://issues.apache.org/jira/browse/WICKET-2175?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12706710#action_12706710
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Igor Vaynberg commented on WICKET-2175:
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see Component#callOnBeforeRenderIfNotVisible()
> onBeforeRender() set visibility of NavigationToolbar prevents it from showing
> again
> -----------------------------------------------------------------------------------
>
> Key: WICKET-2175
> URL: https://issues.apache.org/jira/browse/WICKET-2175
> Project: Wicket
> Issue Type: Bug
> Components: wicket-extensions
> Affects Versions: 1.4-RC3
> Reporter: Anton Veretennikov
> Assignee: Juergen Donnerstag
> Priority: Trivial
> Fix For: 1.4-RC3
>
> Original Estimate: 0.02h
> Remaining Estimate: 0.02h
>
> This code in NavigationToolbar:
> @Override
> protected void onBeforeRender()
> {
> setVisible(table.getPageCount() > 1);
> super.onBeforeRender();
> }
> makes impossible to show toolbar after it became hidden when using with Ajax
> (AjaxNavigationToolbar)
> Possible solution:
> @Override
> public boolean isVisible() {
> return table.getPageCount()>1;
> }
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