My first ever angular application is a pretty basic survey tool. I have multiple choice questions, with a button for each answer and a basic function that logs each answer on button click like this:
ng-click="logAnswer(answer.id)"
What I'm looking for is to be able to add a keypress event to the document that will listen for a keyboard response of 1, 2, 3, 4, 5 which matches up with the button choices and calls the same function.
In searching around I can only find responses that relate to keypresses once a particular input field has focus, which doesn't help me. I did find the OPs response on this post Angular.js keypress events and factories which seems to be heading in the right direction, but I just can't work out how I get his directive to call my function.
I've included the directive in my js:
angular.module('keypress', []).directive('keypressEvents',
function($document, $rootScope) {
return {
restrict: 'A',
link: function() {
$document.bind('keypress', function(e) {
$rootScope.$broadcast('keypress',e , String.fromCharCode(e.which));
});
}
}
})
but I'm not sure how I make use of the keybinding object within my controller:
function keyedS(key, parent_evt, evt){
// key is the key that was pressed
// parent_evt is the keypress event
// evt is the focused element object
}
$scope.keyBindings = {
's': keyedS
}
How do I make the keybinding object listen for the keys I'm listening for and fire-off the function that I need?
thanks
Catch the event emitted by the rootscope in your controller:
$rootScope.$on('keypress', function (e, a, key) {
$scope.$apply(function () {
$scope.key = key;
});
})
key
is then yours to use in the controller.
Here's a fiddle