Primeng: Improve ContextMenu collision detection

[miresk]

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Current behavior
Submenu is position properly only when it is opened on the right side of the viewport. It is displayed correctly on the left side then. (this was fixed in #1596)

Expected behavior
Could you please also fix the position of the submenu when it is open at the bottom of the page? It overflows the bottom of the viewport.

What is the motivation / use case for changing the behavior?
Submenu should reposition itself on all sides of the viewport, not just when open near the right edge

• Angular version: 4.2.2

• PrimeNG version: 4.1.0

[mlandry-devolutions]

We use the contextMenu in a p-tree in our app and we have this exact issue. Is it planned to be fix in the future ?
Thanks!

[danieljones740]

Is there a plan to fix this? We use the contextMenu component in our application and it frequently overflows its container.

[cagataycivici]

Is it reproducible at?

https://www.primefaces.org/primeng/#/contextmenu

[sujayjakhadi]

This is still reproducible with the latest version.