Function bindKey

hub/astray/keyboard.js:278–320

* Binds a on key down and on key up callback to a key or key combo. Accepts a string containing the name of each * key you want to bind to comma separated. If you want to bind a combo the use the plus sign to link keys together. * Example: 'ctrl + x, ctrl + c' Will fire if Control and x or y are

(keyCombo, callback, endCallback)

	 * @param endCallback
	 */
	function bindKey(keyCombo, callback, endCallback) {

		function clear() {
			if(keys && keys.length) {
				var keyBindingGroup = keyBindingGroups[keys.length];

				if(keyBindingGroup.indexOf(keyBinding) > -1) {
					var index = keyBindingGroups[keys.length].indexOf(keyBinding);
					keyBindingGroups[keys.length].splice(index, 1);
				}
			}
		}

		//create an array of combos from the first argument
		var bindSets = keyCombo.toLowerCase().replace(/\s/g, '').split(',');

		//create a binding for each key combo
		for(var i = 0; i < bindSets.length; i += 1) {

			//split up the keys
			var keys = bindSets[i].split('+');

			//if there are keys in the current combo
			if(keys.length) {
				if(!keyBindingGroups[keys.length]) { keyBindingGroups[keys.length] = []; }

				//define the
				var keyBinding = {
					"callback": callback,
					"endCallback": endCallback,
					"keyCombo": bindSets[i],
					"keys": keys
				};

				//save the binding sorted by length
				keyBindingGroups[keys.length].push(keyBinding);
			}
		}

		return {
			"clear": clear
		}
	}

	/**
	 * Binds keys or key combos to an axis. The keys should be in the following order; up, down, left, right. If any