Struct NFCISO15693CustomCommandConfiguration

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pub struct NFCISO15693CustomCommandConfiguration { /* private fields */ }

Expand description

Configuration options for the Manufacturer Custom command.

Implementations§

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impl NFCISO15693CustomCommandConfiguration

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pub unsafe fn manufacturerCode(&self) -> NSUInteger

Manufacturer code. Valid range is 0x00 to 0xFF.

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pub unsafe fn setManufacturerCode(&self, manufacturer_code: NSUInteger)

Setter for manufacturerCode.

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pub unsafe fn customCommandCode(&self) -> NSUInteger

Manufacturer Custom Command Index. Valid range is 0xA0 to 0xDF.

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pub unsafe fn setCustomCommandCode(&self, custom_command_code: NSUInteger)

Setter for customCommandCode.

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pub unsafe fn requestParameters(&self) -> Retained<NSData>

Custom request data.

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pub unsafe fn setRequestParameters(&self, request_parameters: &NSData)

Setter for requestParameters.

This is copied when set.

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pub unsafe fn initWithManufacturerCode_customCommandCode_requestParameters( this: Allocated<Self>, manufacturer_code: NSUInteger, custom_command_code: NSUInteger, request_parameters: Option<&NSData>, ) -> Retained<Self>

Parameter manufacturerCode: 8 bits manufacturer code.

Parameter customCommandCode: 8 bits custom command code. Valid range is 0xA0 to 0xDF.

Parameter requestParameters: Optional custom request parameters.

Initialize with default zero maximum retry and zero retry interval.

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pub unsafe fn initWithManufacturerCode_customCommandCode_requestParameters_maximumRetries_retryInterval( this: Allocated<Self>, manufacturer_code: NSUInteger, custom_command_code: NSUInteger, request_parameters: Option<&NSData>, maximum_retries: NSUInteger, retry_interval: NSTimeInterval, ) -> Retained<Self>

Parameter manufacturerCode: 8 bits manufacturer code.

Parameter customCommandCode: 8 bits custom command code. Valid range is 0xA0 to 0xDF.

Parameter requestParameters: Optional custom request parameters.

Parameter maximumRetries: Maximum number of retry attempt when tag response is not received.

Parameter retryInterval: Time interval wait between each retry attempt.

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impl NFCISO15693CustomCommandConfiguration

Methods declared on superclass NSObject.

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pub unsafe fn init(this: Allocated<Self>) -> Retained<Self>

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pub unsafe fn new() -> Retained<Self>

Methods from Deref<Target = NFCTagCommandConfiguration>§

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pub unsafe fn maximumRetries(&self) -> NSUInteger

Maximum number of retries. Valid value is 0 to 256. Default is 0.

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pub unsafe fn setMaximumRetries(&self, maximum_retries: NSUInteger)

Setter for maximumRetries.

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pub unsafe fn retryInterval(&self) -> NSTimeInterval

Delay in seconds before retry occurs. Default is 0.

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pub unsafe fn setRetryInterval(&self, retry_interval: NSTimeInterval)

Setter for retryInterval.

Methods from Deref<Target = NSObject>§

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pub fn doesNotRecognizeSelector(&self, sel: Sel) -> !

Handle messages the object doesn’t recognize.

See Apple’s documentation for details.

Methods from Deref<Target = AnyObject>§

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pub fn class(&self) -> &'static AnyClass

Dynamically find the class of this object.

§Panics

May panic if the object is invalid (which may be the case for objects returned from unavailable init/new methods).

§Example

Check that an instance of NSObject has the precise class NSObject.

use objc2::ClassType;
use objc2::runtime::NSObject;

let obj = NSObject::new();
assert_eq!(obj.class(), NSObject::class());

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pub unsafe fn get_ivar<T>(&self, name: &str) -> &T
where T: Encode,

👎Deprecated: this is difficult to use correctly, use Ivar::load instead.

Use Ivar::load instead.

§Safety

The object must have an instance variable with the given name, and it must be of type T.

See Ivar::load_ptr for details surrounding this.

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pub fn downcast_ref<T>(&self) -> Option<&T>
where T: DowncastTarget,

Attempt to downcast the object to a class of type T.

This is the reference-variant. Use Retained::downcast if you want to convert a retained object to another type.

§Mutable classes

Some classes have immutable and mutable variants, such as NSString and NSMutableString.

When some Objective-C API signature says it gives you an immutable class, it generally expects you to not mutate that, even though it may technically be mutable “under the hood”.

So using this method to convert a NSString to a NSMutableString, while not unsound, is generally frowned upon unless you created the string yourself, or the API explicitly documents the string to be mutable.

See Apple’s documentation on mutability and on isKindOfClass: for more details.

§Generic classes

Objective-C generics are called “lightweight generics”, and that’s because they aren’t exposed in the runtime. This makes it impossible to safely downcast to generic collections, so this is disallowed by this method.

You can, however, safely downcast to generic collections where all the type-parameters are AnyObject.

§Panics

This works internally by calling isKindOfClass:. That means that the object must have the instance method of that name, and an exception will be thrown (if CoreFoundation is linked) or the process will abort if that is not the case. In the vast majority of cases, you don’t need to worry about this, since both root objects NSObject and NSProxy implement this method.

§Examples

Cast an NSString back and forth from NSObject.

use objc2::rc::Retained;
use objc2_foundation::{NSObject, NSString};

let obj: Retained<NSObject> = NSString::new().into_super();
let string = obj.downcast_ref::<NSString>().unwrap();
// Or with `downcast`, if we do not need the object afterwards
let string = obj.downcast::<NSString>().unwrap();

Try (and fail) to cast an NSObject to an NSString.

use objc2_foundation::{NSObject, NSString};

let obj = NSObject::new();
assert!(obj.downcast_ref::<NSString>().is_none());

Try to cast to an array of strings.

use objc2_foundation::{NSArray, NSObject, NSString};

let arr = NSArray::from_retained_slice(&[NSObject::new()]);
// This is invalid and doesn't type check.
let arr = arr.downcast_ref::<NSArray<NSString>>();

This fails to compile, since it would require enumerating over the array to ensure that each element is of the desired type, which is a performance pitfall.

Downcast when processing each element instead.

use objc2_foundation::{NSArray, NSObject, NSString};

let arr = NSArray::from_retained_slice(&[NSObject::new()]);

for elem in arr {
    if let Some(data) = elem.downcast_ref::<NSString>() {
        // handle `data`
    }
}