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I am unable to achieve a (primefaces)dialog box with attribute modal=true. It works correctly with modal=false, but when I try to set modal=true, even the dialog box overlay becomes inactive.
How can I make it work properly ?
Per the Primefaces Guide 2.2 on the Dialog section:
When using the Primefaces dialog utilize the appendToBody attribute to enable the dialog overlay to be found. The Primefaces dialog is based on the YUI dialog component which has a similar issue for modal dialog overlays.
Manipulating the dialog overlay will involve overriding the CSS class of the overlay and specifying your own opacity.