<FlutterKeyboardViewDelegate> Protocol Reference

#import <FlutterKeyboardViewDelegate.h>

Inheritance diagram for <FlutterKeyboardViewDelegate>:

Instance Methods
(void)	- sendKeyEvent:callback:userData:
(nonnull id< FlutterBinaryMessenger >)	- getBinaryMessenger
(BOOL)	- onTextInputKeyEvent:
(void)	- subscribeToKeyboardLayoutChange:
(flutter::LayoutClue)	- lookUpLayoutForKeyCode:shift:
(nonnull NSDictionary *)	- getPressedState

Properties
NSResponder *	nextResponder

Detailed Description

An interface for a class that can provides |FlutterKeyboardManager| with platform-related features.

This protocol is typically implemented by |FlutterViewController|.

Definition at line 42 of file FlutterKeyboardViewDelegate.h.

Method Documentation

getBinaryMessenger

- (nonnull id< FlutterBinaryMessenger >) getBinaryMessenger

Get a binary messenger to send channel messages with.

This method is used to create the key data channel and typically forwards to |FlutterEngine.binaryMessenger|.

Reimplemented in FlutterViewController.

getPressedState

- (nonnull NSDictionary *) getPressedState

Returns the keyboard pressed state.

Returns the keyboard pressed state. The dictionary contains one entry per pressed keys, mapping from the logical key to the physical key.

Reimplemented in FlutterViewController.

lookUpLayoutForKeyCode:shift:

- (LayoutClue FlutterKeyboardViewDelegate-)p:		(uint16_t)	keyCode
shift:		(BOOL)	shift

Querying the printable result of a key under the given modifier state.

Reimplemented in FlutterViewController.

onTextInputKeyEvent:

- (BOOL) onTextInputKeyEvent:

(nonnull NSEvent *)

event

Dispatch events that are not handled by the keyboard event handlers to the text input handler.

This method typically forwards events to |TextInputPlugin.handleKeyEvent|.

Reimplemented in FlutterViewController.

sendKeyEvent:callback:userData:

- (void) sendKeyEvent:		(const FlutterKeyEvent &)	event
callback:		(nullable FlutterKeyEventCallback)	callback
userData:		(nullable void *)	userData

Dispatch events to the framework to be processed by |HardwareKeyboard|.

This method typically forwards events to |FlutterEngine.sendKeyEvent:callback:userData:|.

Reimplemented in FlutterViewController.

subscribeToKeyboardLayoutChange:

- (void) subscribeToKeyboardLayoutChange:

(nullable flutter::KeyboardLayoutNotifier)

callback

Add a listener that is called whenever the user changes keyboard layout.

Only one listeners is supported. Adding new ones overwrites the current one. Assigning nil unsubscribes.

Property Documentation

nextResponder

- (NSResponder*) nextResponder

readrequirednonatomicassign

Get the next responder to dispatch events that the keyboard system (including text input) do not handle.

If the |nextResponder| is null, then those events will be discarded.

Definition at line 51 of file FlutterKeyboardViewDelegate.h.

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

• shell/platform/darwin/macos/framework/Source/FlutterKeyboardViewDelegate.h