Function pruneActiveKeyBindings

hub/astray/keyboard.js:232–268

* Removes no longer active keys and fires the on key up callbacks for associated active bindings. * @param event

(event)

	 * @param event
	 */
	function pruneActiveKeyBindings(event) {
		var bindingStack = queryActiveBindings();
		var output;

		//loop through the active combos
		for(var bindingCombo in activeBindings) {
			if(activeBindings.hasOwnProperty(bindingCombo)) {
				var binding = activeBindings[bindingCombo],
					active = false;

				//loop thorugh the active bindings
				for(var bindingIndex = 0; bindingIndex < bindingStack.length; bindingIndex += 1) {
					var activeCombo = bindingStack[bindingIndex].keyCombo;

					//check to see if the combo is still active
					if(activeCombo === bindingCombo) {
						active = true;
						break;
					}
				}

				//if the combo is no longer active then fire its end callback and remove it
				if(!active) {

					if(typeof binding.endCallback === "function") {
						if(!binding.endCallback(event, binding.keys, binding.keyCombo)) {
							output = false
						}
					}

					delete activeBindings[bindingCombo];
				}
			}
		}

		return output;
	}

	/**
	 * Binds a on key down and on key up callback to a key or key combo. Accepts a string containing the name of each