ICEfaces EE 3.3 P01
Subversion 37344

icefaces3 trunk
Subversion 37346

In most cases, giving a z-index of 1 is sufficient to put the notificationPanel on top of everything else, with one of the always showing menu variants, 2 was necessary. But with the menus that popup then 1000 was necessary to show in front of the popup. For autocompleteEntry / comboBox / selectMenu, a value of > 500 is necessary. And with tooltip, a value of 20000 was necessary. But those are all transiently showing things which might make sense to have over top of the notification. When they are behind a notificationPanel, they would be better to detect the notificationPanel as the top of the display and show below in the y axis, then underneath in the z axis. I'm going to go with 10, with the assumption that temporary popups should come in front of the notificationPanel.

Otherwise I would recommend a registration of always present position fixed elements, such as notificationPanel, that popups would use to limit their window sizing and positioning by.

It's not just that the ace:notificationPanel is shown behind the ace:tabSet, but that it's shown behind the source code ace:panel's header and content areas, with the source code tabSet being inside the source code panel.

And that's not from the source code panel having any special z-index or other layout but simply because the notificationPanel is inside of another ace:panel, that is a something of a peer of the source code ace:panel. As soon as the notificationPanel has a z-index of even just 1, then it shows over the panel header and content areas. A quick search of z-index in the ACE code shows that several components use z-index in the single digits for their regular layout, and several popup/overlay components use z-index of API that searches other z-index values already visible in the page, and dynamically calculates a larger one. Also, adding a z-index property to the notificationPanel would be in line with ace:draggable, but would not be as preferable as dynamic calculation. For a proper hard-coded value, we would need to decide which should display in front, menus or the notificationPanel.