| Flutter macOS Embedder |

Instance Methods | Properties | List of all members
<FlutterKeyPrimaryResponder> Protocol Reference

`#import <FlutterKeyPrimaryResponder.h>`

Inheritance diagram for <FlutterKeyPrimaryResponder>:

## Instance Methods
(void) | - handleEvent:callback:
(void) | - syncModifiersIfNeeded:timestamp:

## Properties
NSMutableDictionary< NSNumber *, NSNumber * > * | layoutMap

## Detailed Description

An interface for a responder that can process a key event and decides whether to handle an event asynchronously.

To use this class, add it to a |FlutterKeyboardManager| with |addPrimaryResponder|.

Definition at line 18 of file FlutterKeyPrimaryResponder.h.

## Method Documentation

## ◆ handleEvent:callback:

- (void) handleEvent: |  | (nonnull NSEvent *) | event
callback: |  | (nonnull FlutterAsyncKeyCallback) | callback
| required

Process the event.

The |callback| should be called with a value that indicates whether the responder has handled the given event. The |callback| must be called exactly once, and can be called before the return of this method, or after.

Referenced by flutter::testing::TEST(), and flutter::testing::TEST_F().

## ◆ syncModifiersIfNeeded:timestamp:

- (void) syncModifiersIfNeeded: |  | (NSEventModifierFlags) | modifierFlags
timestamp: |  | (NSTimeInterval) | timestamp
| required

Synchronize the modifier flags if necessary. The new modifier flag would usually come from mouse event and may be out of sync with current keyboard state if the modifier flags have changed while window was not key.

Reimplemented in FlutterEmbedderKeyResponder.

Referenced by FlutterKeyboardManager::syncModifiersIfNeeded:timestamp:.

## Property Documentation

## ◆ layoutMap

- (NSMutableDictionary<NSNumber*, NSNumber*>*) layoutMap
| readwriterequirednonatomicstrong

Definition at line 46 of file FlutterKeyPrimaryResponder.h.

Referenced by FlutterKeyboardManager::initWithViewDelegate:, and flutter::testing::TEST_F().

The documentation for this protocol was generated from the following file:

- shell/platform/darwin/macos/framework/Source/FlutterKeyPrimaryResponder.h