fix issue 168: Menu doesn't close when press 'Enter'

[WaterDesk]

There are two cases:

1. Given the menu is open and the selected item is disabled, When I press Enter, the menu doesn't close, the expected behavior is that the menu should close
2. Given the menu is open and no item is selected, When I press Enter, the menu doesn't close, the expected behavior is that the menu should close

[vkbansal]

AFAIK if this.seletedItemRef.ref instanceof HTMLElement is true , this.seletedItemRef.ref.props will not exist since it will not refer to a ReactElement. Correct me if I'm wrong,

[WaterDesk]

not exactly, I think. Below is the console output of this.selectedItemRef:

[vkbansal]

Can you please, also show the output for this.seletedItemRef.ref instanceof HTMLElement??

[WaterDesk]

      case 13:
        // enter
        e.preventDefault();
        _this2.tryToOpenSubMenu(e);
        console.log("handleKeyNavigation es6");
        console.log(_this2.seletedItemRef);
        if (_this2.seletedItemRef) {
          console.log("_this2.seletedItemRef.ref instanceof HTMLElement");
          console.log(_this2.seletedItemRef.ref instanceof HTMLElement);
        }

        if (
          _this2.seletedItemRef &&
          _this2.seletedItemRef.ref instanceof HTMLElement &&
          !_this2.seletedItemRef.props.disabled
        ) {
          _this2.seletedItemRef.ref.click();
        } else {
          console.log("hideMenu");
          _this2.hideMenu(e);
        }
        break;

[WaterDesk]

this.seletedItemRef.ref instanceof HTMLElement is true

[WaterDesk]

@vkbansal I am afraid I made a mistake in this PR. The code change in my local to determine the disabled status of the menuitem is !_this2.seletedItemRef.props.disabled. But there was a typo in the PR: !this.seletedItemRef.ref.props.disabled. I will create another PR. Very sorry for my mistake.

[vkbansal]

@WaterDesk no issues

[WaterDesk]

Thank you to merge the code. Could you please help to deliver a release 2.8.2?

[vkbansal]

Sure, will do it in a day or two