add method to check for open dialogs

[maxklenk]

There is a .closeAll() method, but I would like to check first if there are open modals (for example to stop location change and just close the modal).

Something like .getOpenModals() which returns the ids of them would be nice.

[thoughtpalette]

@maxklenk https://github.com/likeastore/ngDialog#isopenid

There is isOpen() which you can perform a conditional on and proceed/halt

[maxklenk]

@thoughtpalette thank you for the response, but for using isOpen() I have to have to id of the dialog already, which I don't have.

[egor-smirnov]

@maxklenk added this to plan.