#import "flutter/shell/platform/darwin/common/framework/Headers/FlutterChannels.h"

Functions
static void	ResizeChannelBuffer (NSObject< FlutterBinaryMessenger > binaryMessenger, NSString channel, NSInteger newSize)

static void	SetWarnsOnOverflow (NSObject< FlutterBinaryMessenger > binaryMessenger, NSString channel, BOOL warns)

static FlutterBinaryMessengerConnection	SetMessageHandler (NSObject< FlutterBinaryMessenger > messenger, NSString name, FlutterBinaryMessageHandler handler, NSObject< FlutterTaskQueue > *taskQueue)

Variables
static FLUTTER_ASSERT_ARC NSString *const	kFlutterChannelBuffersChannel = @"@"dev.flutter/channel-buffers"

static NSString *const	kResizeMethod = @"@"resize"

static NSString *const	kOverflowMethod = @"@"overflow"

NSString *	_name

NSObject< FlutterMessageCodec > *	_codec

FlutterBinaryMessengerConnection	_connection

NSObject< FlutterTaskQueue > *	_taskQueue

Function Documentation

◆ ResizeChannelBuffer()

static void ResizeChannelBuffer	(	NSObject< FlutterBinaryMessenger > *	binaryMessenger,
		NSString *	channel,
		NSInteger	newSize
	)

static

Definition at line 15 of file FlutterChannels.mm.

                                                    {
   NSCAssert(newSize >= 0, @"Channel buffer size must be non-negative");
   // Cast newSize to int because the deserialization logic handles only 32 bits values,
   // see
   // https://github.com/flutter/engine/blob/93e8901490e78c7ba7e319cce4470d9c6478c6dc/lib/ui/channel_buffers.dart#L495.
   NSArray* args = @[ channel, @(static_cast<int>(newSize)) ];
   FlutterMethodCall* resizeMethodCall = [FlutterMethodCall methodCallWithMethodName:kResizeMethod
                                                                           arguments:args];
   NSObject<FlutterMethodCodec>* codec = [FlutterStandardMethodCodec sharedInstance];
   NSData* message = [codec encodeMethodCall:resizeMethodCall];
   [binaryMessenger sendOnChannel:kFlutterChannelBuffersChannel message:message];
 }

References kFlutterChannelBuffersChannel, and kResizeMethod.

Referenced by FlutterBasicMessageChannel::resizeChannelBuffer:, and FlutterBasicMessageChannel::resizeChannelWithName:binaryMessenger:size:.

◆ SetMessageHandler()

static FlutterBinaryMessengerConnection SetMessageHandler	(	NSObject< FlutterBinaryMessenger > *	messenger,
		NSString *	name,
		FlutterBinaryMessageHandler	handler,
		NSObject< FlutterTaskQueue > *	taskQueue
	)

static

Definition at line 50 of file FlutterChannels.mm.

                                            {
   if (taskQueue) {
     NSCAssert([messenger respondsToSelector:@selector(setMessageHandlerOnChannel:
                                                             binaryMessageHandler:taskQueue:)],
               @"");
     return [messenger setMessageHandlerOnChannel:name
                             binaryMessageHandler:handler
                                        taskQueue:taskQueue];
   } else {
     return [messenger setMessageHandlerOnChannel:name binaryMessageHandler:handler];
   }
 }

◆ SetWarnsOnOverflow()

static void SetWarnsOnOverflow	(	NSObject< FlutterBinaryMessenger > *	binaryMessenger,
		NSString *	channel,
		BOOL	warns
	)

static

Defines whether a channel should show warning messages when discarding messages due to overflow.

Parameters

binaryMessenger	The binary messenger.
channel	The channel name.
warns	When false, the channel is expected to overflow and warning messages will not be shown.

Definition at line 39 of file FlutterChannels.mm.

                                            {
   FlutterMethodCall* overflowMethodCall =
       [FlutterMethodCall methodCallWithMethodName:kOverflowMethod
                                         arguments:@[ channel, @(!warns) ]];
   NSObject<FlutterMethodCodec>* codec = [FlutterStandardMethodCodec sharedInstance];
   NSData* message = [codec encodeMethodCall:overflowMethodCall];
   [binaryMessenger sendOnChannel:kFlutterChannelBuffersChannel message:message];
 }