1180490 - Cannot change level of panels in linux/mac

Status: UNCONFIRMED

(Core :: XUL, defect)

Description

[noitidart]

User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:40.0) Gecko/20100101 Firefox/40.0
Build ID: 20150702173756

Steps to reproduce:

User posted on stackoverflow:

http://stackoverflow.com/questions/31143585/linux-ubuntu-cannot-make-panel-elements-be-level-parent

He was not able to change level of panels on linux/mac

I tested with this code from scratchpad and its true, it doesnt work:

var win = Services.wm.getMostRecentWindow('navigator:browser');
var panel = win.document.createElement('panel');
var screen = Services.appShell.hiddenDOMWindow.screen;
var props = {
	noautohide: true,
	noautofocus: false,
	level: 'parent',
	style: 'padding:15px; margin:0; width:' + screen.width + 'px; height:' + screen.height + 'px; background-color:steelblue;'
}
for (var p in props) {
	panel.setAttribute(p, props[p]);
}


win.document.querySelector('#mainPopupSet').appendChild(panel);


panel.addEventListener('dblclick', function () {
	panel.parentNode.removeChild(panel)
}, false);
panel.openPopup(null, 'overlap', screen.availLeft, screen.availTop);


Actual results:

Code works on windows. If you run that code then do alt+tab you see it comes over that, or focus any other window it comes over that. However on linux/mac it does not.

Comment 1

[Neil Deakin]

The issue here is that you can't reinitialize widget-level properties. You can workaround this by setting the hidden property on the popup and then removing it.