Struct ICDevice 

pub struct ICDevice { /* private fields */ }

Available on crate feature ICDevice only.

ICDevice is an abstract class that represents a device supported by Image Capture facility. ImageCaptureCore defines two concrete subclasses of ICDevice, ICCameraDevice and ICScannerDevice. ICDeviceBrowser creates instances of these two subclasses to represent cameras and scanners it finds.

See also Apple’s documentation

Implementations

impl ICDevice

pub unsafe fn delegate( &self, ) -> Option<Retained<ProtocolObject<dyn ICDeviceDelegate>>>

The delegate to receive messages once a session is opened on the device.

The delegate must conform ICDeviceDelegate protocol. In addition it should respond to selectors defined in ICCameraDeviceDelegate protocol in order to effectively interact with the device object. The messages this delegate can expect to receive are described by these protocols.

Safety

This is not retained internally, you must ensure the object is still alive.

pub unsafe fn setDelegate( &self, delegate: Option<&ProtocolObject<dyn ICDeviceDelegate>>, )

Setter for delegate.

Safety

This is unretained, you must ensure the object is kept alive while in use.

pub unsafe fn type(&self) -> ICDeviceType

The type of the device as defined by ICDeviceType OR’d with its ICDeviceLocationType.

Note: The type of this device can be obtained by AND’ing the value retuned by this property with an appropriate ICDeviceTypeMask.

Note: The location type of this device can be obtained by AND’ing the value retuned by this property with an appropriate ICDeviceLocationTypeMask.

pub unsafe fn capabilities(&self) -> Retained<NSArray<NSString>>

The capabilities of the device as reported by the device module.

pub unsafe fn name(&self) -> Option<Retained<NSString>>

Name of the device as reported by the device module or by the device transport when a device module is not in control of this device.

Note: This name may change if the device module overrides the default name of the device reported by the device’s transport, or if the name of the filesystem volume mounted by the device is changed by the user.

pub unsafe fn productKind(&self) -> Option<Retained<NSString>>

Type of the device. Possible values are: “ iPhone“, @“iPod”, @“iPad”, @“Camera”, @“Scanner”

pub unsafe fn icon(&self) -> Option<Retained<CGImage>>

Available on crate feature objc2-core-graphics only.

Icon image for the device class. If there is no custom icon present from a device manufacturer, this will be a rendered version of the system symbol for the device class. Using a rendered system symbol instead of the systemSymbolName is discouraged.

pub unsafe fn systemSymbolName(&self) -> Option<Retained<NSString>>

Standard system symbol used to represent the device class. Using the symbol to render an appropriate device icon will ensure proper scaling for high resolution devices.

pub unsafe fn transportType(&self) -> Option<Retained<NSString>>

The transport type used by the device. The possible values are: ICTransportTypeUSB or ICTransportTypeMassStorage.

pub unsafe fn UUIDString(&self) -> Option<Retained<NSString>>

A string representation of the Universally Unique ID of the device.

pub unsafe fn locationDescription(&self) -> Option<Retained<NSString>>

A non-localized location description string for the device.

The value returned in one of the location description strings defined above, or location obtained from the Bonjour TXT record of a network device.

pub unsafe fn hasOpenSession(&self) -> bool

Indicates whether the device has an open session.

pub unsafe fn userData(&self) -> Option<Retained<NSMutableDictionary>>

Client convenience bookkeeping object retained by the framework.

Safety

The returned generic should be of the correct type.

pub unsafe fn modulePath(&self) -> Retained<NSString>

Filesystem path of the device module that is associated with this device. Camera-specific capabilities are defined in ICCameraDevice.h and scanner-specific capabilities are defined in ICScannerDevice.h.

pub unsafe fn moduleVersion(&self) -> Option<Retained<NSString>>

The bundle version of the device module associated with this device.

Note: This may change if an existing device module associated with this device is updated or a new device module for this device is installed.

pub unsafe fn serialNumberString(&self) -> Option<Retained<NSString>>

The serial number of the device. This will be NULL if the device does not provide a serial number.

pub unsafe fn usbLocationID(&self) -> c_int

The USB location of which the device is occupying.

pub unsafe fn usbProductID(&self) -> c_int

The USB PID associated with the device attached.

pub unsafe fn usbVendorID(&self) -> c_int

The USB VID associated with the device attached.

pub unsafe fn requestOpenSession(&self)

This message requests to open a session on the device.

Make sure the receiver’s delegate is set prior to sending this message; otherwise this message will be ignored. This request is completed when the delegate receives a “device:didOpenSessionWithError:” message.

Note: Execution of the delegate callback will occur on the main thread.

pub unsafe fn requestCloseSession(&self)

This message requests to close a previously opened session on this device.

This request is completed when the delegate receives a “device:didCloseSessionWithError:” message.

Note: Execution of the delegate callback will occur on the main thread.

pub unsafe fn requestEject(&self)

Eject the media if permitted by the device, or disconnect from a remote device.

pub unsafe fn requestOpenSessionWithOptions_completion( &self, options: Option<&NSDictionary<ICSessionOptions, AnyObject>>, completion: &DynBlock<dyn Fn(*mut NSError)>, )

Available on crate feature block2 only.

This message requests to open a session on the device.

This request will execute the completion handler provided upon return.

Note: The completion block will execute on an any available queue, often this will not be the main queue.

Safety

options generic should be of the correct type.

pub unsafe fn requestCloseSessionWithOptions_completion( &self, options: Option<&NSDictionary<ICSessionOptions, AnyObject>>, completion: &DynBlock<dyn Fn(*mut NSError)>, )

Available on crate feature block2 only.

This message requests to close a previously opened session on this device.

This request will execute the completion handler provided upon return.

Note: The completion block will execute on an any available queue, often this will not be the main queue.

Safety

options generic should be of the correct type.

pub unsafe fn requestEjectWithCompletion( &self, completion: &DynBlock<dyn Fn(*mut NSError)>, )

Available on crate feature block2 only.

Eject the media, or disconnect the device - if permitted by the device.

This request will execute the completion handler provided upon return.

Note: The completion block will execute on an any available queue, often this will not be the main queue.

pub unsafe fn autolaunchApplicationPath(&self) -> Option<Retained<NSString>>

Filesystem path of an application that is to be automatically launched when this device is added.

This property is unavailable for devices of ICTransportTypeProximity.

pub unsafe fn setAutolaunchApplicationPath( &self, autolaunch_application_path: Option<&NSString>, )

Setter for autolaunchApplicationPath.

This is [copied][objc2_foundation::NSCopying::copy] when set.

pub unsafe fn isRemote(&self) -> bool

Indicates whether the device is a remote device published by Image Capture device sharing facility.

Name of the device as reported by the device module or by the device transport when a device module is not in control of this device.

Note: This name may change if the device module overrides the default name of the device reported by the device’s transport, or if the name of the filesystem volume mounted by the device is changed by the user.

pub unsafe fn persistentIDString(&self) -> Option<Retained<NSString>>

A string representation of the persistent ID of the device.

pub unsafe fn requestSendMessage_outData_maxReturnedDataSize_sendMessageDelegate_didSendMessageSelector_contextInfo( &self, message_code: c_uint, data: &NSData, max_returned_data_size: c_uint, send_message_delegate: &AnyObject, selector: Sel, context_info: *mut c_void, )

This method asynchronously sends an arbitrary message with optional data to a device.

This method allows developers to send a private message from a client application to a device module.

The response to this command will be delivered using didSendMessageSelector of sendMessageDelegate. The didSendMessageSelector should have the same signature as: - (void)didSendMessage:(UInt32)messageCode inData:(NSData*)data error:(NSError*)error contextInfo:(void*)contextInfo.

The content of error returned should be examined to determine if the request completed successfully.

Note: This method should not be used to send PTP pass-through commands to a PTP camera. Please refer to ‘requestSendPTPCommand:outData:sendCommandDelegate:sendCommandDelegate:contextInfo:’ defined in ICCameraDevice.h for sending PTP pass-through commands.

Note: Execution of the delegate callback will occur on the main thread.

Safety

• send_message_delegate should be of the correct type.
• selector must be a valid selector.
• context_info must be a valid pointer or null.

pub unsafe fn requestEjectOrDisconnect(&self)

👎Deprecated

Eject the media if permitted by the device, or disconnect from a remote device.

pub unsafe fn requestYield(&self)

👎Deprecated: Requesting a device yield is no longer avaialble

This message requests the device module in control of this device to yield control.

This message should be used only if the client is planning on communicating with the device directly. The device module may not yield control of the device if it has an open session.

pub unsafe fn moduleExecutableArchitecture(&self) -> c_int

👎Deprecated: Module executable architecture is no longer available

Reports the device module servicing the requests executable architecture.

impl ICDevice

Methods declared on superclass NSObject.

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

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

Methods from Deref<Target = NSObject>

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

Handle messages the object doesn’t recognize.

See Apple’s documentation for details.

Methods from Deref<Target = AnyObject>

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());

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.

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`
    }
}

Trait Implementations

impl AsRef<AnyObject> for ICDevice

fn as_ref(&self) -> &AnyObject

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<ICDevice> for ICCameraDevice

Available on crate feature ICCameraDevice only.

fn as_ref(&self) -> &ICDevice

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<ICDevice> for ICDevice

fn as_ref(&self) -> &Self

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<ICDevice> for ICScannerDevice

Available on crate feature ICScannerDevice only.

fn as_ref(&self) -> &ICDevice

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<NSObject> for ICDevice

fn as_ref(&self) -> &NSObject

Converts this type into a shared reference of the (usually inferred) input type.

impl Borrow<AnyObject> for ICDevice

fn borrow(&self) -> &AnyObject

Immutably borrows from an owned value.

impl Borrow<ICDevice> for ICCameraDevice

Available on crate feature ICCameraDevice only.

fn borrow(&self) -> &ICDevice

Immutably borrows from an owned value.

impl Borrow<ICDevice> for ICScannerDevice

Available on crate feature ICScannerDevice only.

fn borrow(&self) -> &ICDevice

Immutably borrows from an owned value.

impl Borrow<NSObject> for ICDevice

fn borrow(&self) -> &NSObject

Immutably borrows from an owned value.

impl ClassType for ICDevice

const NAME: &'static str = "ICDevice"

The name of the Objective-C class that this type represents.

type Super = NSObject

The superclass of this class.

type ThreadKind = <<ICDevice as ClassType>::Super as ClassType>::ThreadKind

Whether the type can be used from any thread, or from only the main thread.

fn class() -> &'static AnyClass

Get a reference to the Objective-C class that this type represents.

fn as_super(&self) -> &Self::Super

Get an immutable reference to the superclass.

impl Debug for ICDevice

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Deref for ICDevice

type Target = NSObject

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl Hash for ICDevice

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Message for ICDevice

fn retain(&self) -> Retained<Self>

where Self: Sized,

Increment the reference count of the receiver.

impl NSObjectProtocol for ICDevice

fn isEqual(&self, other: Option<&AnyObject>) -> bool

where Self: Sized + Message,

Check whether the object is equal to an arbitrary other object.

fn hash(&self) -> usize

where Self: Sized + Message,

An integer that can be used as a table address in a hash table structure.

fn isKindOfClass(&self, cls: &AnyClass) -> bool

where Self: Sized + Message,

Check if the object is an instance of the class, or one of its subclasses.

fn is_kind_of<T>(&self) -> bool

where T: ClassType, Self: Sized + Message,

👎Deprecated: use isKindOfClass directly, or cast your objects with AnyObject::downcast_ref

Check if the object is an instance of the class type, or one of its subclasses.

fn isMemberOfClass(&self, cls: &AnyClass) -> bool

where Self: Sized + Message,

Check if the object is an instance of a specific class, without checking subclasses.

fn respondsToSelector(&self, aSelector: Sel) -> bool

where Self: Sized + Message,

Check whether the object implements or inherits a method with the given selector.

fn conformsToProtocol(&self, aProtocol: &AnyProtocol) -> bool

where Self: Sized + Message,

Check whether the object conforms to a given protocol.

fn description(&self) -> Retained<NSObject>

where Self: Sized + Message,

A textual representation of the object.

fn debugDescription(&self) -> Retained<NSObject>

where Self: Sized + Message,

A textual representation of the object to use when debugging.

fn isProxy(&self) -> bool

where Self: Sized + Message,

Check whether the receiver is a subclass of the NSProxy root class instead of the usual NSObject.

fn retainCount(&self) -> usize

where Self: Sized + Message,

The reference count of the object.

impl PartialEq for ICDevice

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl RefEncode for ICDevice

const ENCODING_REF: Encoding = <NSObject as ::objc2::RefEncode>::ENCODING_REF

The Objective-C type-encoding for a reference of this type.

impl DowncastTarget for ICDevice

impl Eq for ICDevice