#[repr(C)]pub struct NSRunningApplication { /* private fields */ }
NSRunningApplication
only.Expand description
NSRunningApplication
is a class to manipulate and provide information for a single instance of an application. Only user applications are tracked; this does not provide information about every process on the system.
Some properties of an application are fixed, such as the bundle identifier. Other properties may vary over time, such as whether the app is hidden. Properties that vary can be observed with KVO, in which case the description comment for the method will mention it.
Properties that vary over time are inherently race-prone. For example, a hidden app may unhide itself at any time. To ameliorate this, properties persist until the next turn of the main run loop in a common mode. For example, if you repeatedly poll an unhidden app for its hidden property without allowing the run loop to run, it will continue to return NO
, even if the app hides, until the next turn of the run loop.
NSRunningApplication
is thread safe, in that its properties are returned atomically. However, it is still subject to the main run loop policy described above. If you access an instance of NSRunningApplication
from a background thread, be aware that its time-varying properties may change from under you as the main run loop runs (or not).
An NSRunningApplication
instance remains valid after the application exits. However, most properties lose their significance, and some properties may not be available on a terminated application.
To access the list of all running applications, use the -runningApplications
method on NSWorkspace
.
See also Apple’s documentation
Implementations§
Source§impl NSRunningApplication
impl NSRunningApplication
Sourcepub unsafe fn isTerminated(&self) -> bool
pub unsafe fn isTerminated(&self) -> bool
Indicates that the process is an exited application. This is observable through KVO.
Sourcepub unsafe fn isFinishedLaunching(&self) -> bool
pub unsafe fn isFinishedLaunching(&self) -> bool
Indicates that the process is finished launching, which corresponds to the
NSApplicationDidFinishLaunching
internal notification.
This is observable through KVO.
Some applications do not post this notification and so are never reported as finished launching.
Sourcepub unsafe fn isHidden(&self) -> bool
pub unsafe fn isHidden(&self) -> bool
Indicates whether the application is currently hidden. This is observable through KVO.
Sourcepub unsafe fn isActive(&self) -> bool
pub unsafe fn isActive(&self) -> bool
Indicates whether the application is currently frontmost. This is observable through KVO.
Sourcepub unsafe fn ownsMenuBar(&self) -> bool
pub unsafe fn ownsMenuBar(&self) -> bool
Indicates whether the application currently owns the menu bar. This is observable through KVO.
Sourcepub unsafe fn activationPolicy(&self) -> NSApplicationActivationPolicy
pub unsafe fn activationPolicy(&self) -> NSApplicationActivationPolicy
Indicates the activation policy of the application.
This is observable through KVO (the type is usually fixed, but may be changed through a call to -[NSApplication setActivationPolicy:]
).
Sourcepub unsafe fn localizedName(&self) -> Option<Retained<NSString>>
pub unsafe fn localizedName(&self) -> Option<Retained<NSString>>
Indicates the name of the application. This is dependent on the current localization of the referenced app, and is suitable for presentation to the user.
Sourcepub unsafe fn bundleIdentifier(&self) -> Option<Retained<NSString>>
pub unsafe fn bundleIdentifier(&self) -> Option<Retained<NSString>>
Indicates the CFBundleIdentifier
of the application, or nil if the application does not have an Info.plist
.
Sourcepub unsafe fn bundleURL(&self) -> Option<Retained<NSURL>>
pub unsafe fn bundleURL(&self) -> Option<Retained<NSURL>>
Indicates the URL to the application’s bundle, or nil if the application does not have a bundle.
Sourcepub unsafe fn executableURL(&self) -> Option<Retained<NSURL>>
pub unsafe fn executableURL(&self) -> Option<Retained<NSURL>>
Indicates the URL to the application’s executable.
Sourcepub unsafe fn processIdentifier(&self) -> pid_t
Available on crate feature libc
only.
pub unsafe fn processIdentifier(&self) -> pid_t
libc
only.Indicates the process identifier (pid) of the application.
Do not rely on this for comparing processes. Use -isEqual:
instead.
Note: Not all applications have a pid. Applications without a pid return -1 from this method. This is observable through KVO (an application’s pid may change if it is automatically terminated).
Sourcepub unsafe fn launchDate(&self) -> Option<Retained<NSDate>>
pub unsafe fn launchDate(&self) -> Option<Retained<NSDate>>
Indicates the date when the application was launched.
This property is not available for all applications.
Specifically, it is not available for applications that were launched without going through LaunchServices
.
Sourcepub unsafe fn icon(&self) -> Option<Retained<NSImage>>
Available on crate feature NSImage
only.
pub unsafe fn icon(&self) -> Option<Retained<NSImage>>
NSImage
only.Returns: The icon of the application.
Sourcepub unsafe fn executableArchitecture(&self) -> NSInteger
pub unsafe fn executableArchitecture(&self) -> NSInteger
Indicates the executing processor architecture for the application, as an
NSBundleExecutableArchitecture
from NSBundle.h
.
Sourcepub unsafe fn hide(&self) -> bool
pub unsafe fn hide(&self) -> bool
Attempts to hide the receiver.
Returns: YES
if the request to hide or unhide was successfully sent, NO
if not (for example, if the application has quit, or is of a type that cannot be unhidden).
Sourcepub unsafe fn unhide(&self) -> bool
pub unsafe fn unhide(&self) -> bool
Attempts to unhide the receiver.
Returns: YES
if the request to hide or unhide was successfully sent, NO
if not (for example, if the application has quit, or is of a type that cannot be unhidden).
Sourcepub unsafe fn activateFromApplication_options(
&self,
application: &NSRunningApplication,
options: NSApplicationActivationOptions,
) -> bool
pub unsafe fn activateFromApplication_options( &self, application: &NSRunningApplication, options: NSApplicationActivationOptions, ) -> bool
Attempts to activate the application using the specified options.
You shouldn’t assume the app will be active immediately after sending this message. The framework also does not guarantee that the app will be activated at all.
Additionally allows specifying another application to take
the active status from, which can be used for coordinated
or cooperative activation. The other application should
call -yieldActivationToApplication:
or equivalent prior to this
request being sent.
Returns: YES
if the request has been allowed by the system,
otherwise NO
.
Sourcepub unsafe fn activateWithOptions(
&self,
options: NSApplicationActivationOptions,
) -> bool
pub unsafe fn activateWithOptions( &self, options: NSApplicationActivationOptions, ) -> bool
Attempts to activate the receiver.
Returns: YES
if the request to activate was successfully sent, NO
if not (for example, if the application has quit, or is of a type that cannot be activated).
Sourcepub unsafe fn terminate(&self) -> bool
pub unsafe fn terminate(&self) -> bool
Attempts to quit the receiver normally.
Returns: YES
if the request was successfully sent, NO
if not (for example, if the application is no longer running).
This method may return before the receiver exits; you should observe the terminated property or listen for the notification to detect when the app has exited.
Sourcepub unsafe fn forceTerminate(&self) -> bool
pub unsafe fn forceTerminate(&self) -> bool
Attempts to force the receiver to quit.
Returns: YES
if the request was successfully sent, NO
if not (for example, if the application is no longer running).
This method may return before the receiver exits; you should observe the terminated property or listen for the notification to detect when the app has exited.
Sourcepub unsafe fn runningApplicationsWithBundleIdentifier(
bundle_identifier: &NSString,
) -> Retained<NSArray<NSRunningApplication>>
pub unsafe fn runningApplicationsWithBundleIdentifier( bundle_identifier: &NSString, ) -> Retained<NSArray<NSRunningApplication>>
Returns: An array of currently running applications with the given bundle identifier, or an empty array if no apps match.
Sourcepub unsafe fn runningApplicationWithProcessIdentifier(
pid: pid_t,
) -> Option<Retained<Self>>
Available on crate feature libc
only.
pub unsafe fn runningApplicationWithProcessIdentifier( pid: pid_t, ) -> Option<Retained<Self>>
libc
only.Returns: The running application with the given process identifier, or nil if no application has that pid. Applications that do not have PIDs cannot be returned from this method.
Sourcepub unsafe fn currentApplication() -> Retained<NSRunningApplication>
pub unsafe fn currentApplication() -> Retained<NSRunningApplication>
Returns: An
NSRunningApplication
representing this application.
Sourcepub unsafe fn terminateAutomaticallyTerminableApplications()
pub unsafe fn terminateAutomaticallyTerminableApplications()
Cause any applications that are invisibly still running (see NSProcessInfo.h
automatic termination methods and docs) to terminate as if triggered by system memory pressure.
This is intended for installer apps and the like to make sure that nothing is unexpectedly relying on the files they’re replacing.
Methods from Deref<Target = NSObject>§
Sourcepub fn doesNotRecognizeSelector(&self, sel: Sel) -> !
pub fn doesNotRecognizeSelector(&self, sel: Sel) -> !
Handle messages the object doesn’t recognize.
See Apple’s documentation for details.
Methods from Deref<Target = AnyObject>§
Sourcepub fn class(&self) -> &'static AnyClass
Available on crate feature NSAccessibilityConstants
only.
pub fn class(&self) -> &'static AnyClass
NSAccessibilityConstants
only.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());
Sourcepub unsafe fn get_ivar<T>(&self, name: &str) -> &Twhere
T: Encode,
👎Deprecated: this is difficult to use correctly, use Ivar::load
instead.Available on crate feature NSAccessibilityConstants
only.
pub unsafe fn get_ivar<T>(&self, name: &str) -> &Twhere
T: Encode,
Ivar::load
instead.NSAccessibilityConstants
only.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.
Sourcepub fn downcast_ref<T>(&self) -> Option<&T>where
T: DowncastTarget,
Available on crate feature NSAccessibilityConstants
only.
pub fn downcast_ref<T>(&self) -> Option<&T>where
T: DowncastTarget,
NSAccessibilityConstants
only.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§
Source§impl AsRef<AnyObject> for NSRunningApplication
impl AsRef<AnyObject> for NSRunningApplication
Source§impl AsRef<NSObject> for NSRunningApplication
impl AsRef<NSObject> for NSRunningApplication
Source§impl Borrow<AnyObject> for NSRunningApplication
impl Borrow<AnyObject> for NSRunningApplication
Source§impl Borrow<NSObject> for NSRunningApplication
impl Borrow<NSObject> for NSRunningApplication
Source§impl ClassType for NSRunningApplication
impl ClassType for NSRunningApplication
Source§const NAME: &'static str = "NSRunningApplication"
const NAME: &'static str = "NSRunningApplication"
Source§type ThreadKind = <<NSRunningApplication as ClassType>::Super as ClassType>::ThreadKind
type ThreadKind = <<NSRunningApplication as ClassType>::Super as ClassType>::ThreadKind
Source§impl Debug for NSRunningApplication
impl Debug for NSRunningApplication
Source§impl Deref for NSRunningApplication
impl Deref for NSRunningApplication
Source§impl Hash for NSRunningApplication
impl Hash for NSRunningApplication
Source§impl Message for NSRunningApplication
impl Message for NSRunningApplication
Source§impl NSObjectProtocol for NSRunningApplication
impl NSObjectProtocol for NSRunningApplication
Source§fn isEqual(&self, other: Option<&AnyObject>) -> bool
fn isEqual(&self, other: Option<&AnyObject>) -> bool
Source§fn hash(&self) -> usize
fn hash(&self) -> usize
Source§fn isKindOfClass(&self, cls: &AnyClass) -> bool
fn isKindOfClass(&self, cls: &AnyClass) -> bool
Source§fn is_kind_of<T>(&self) -> bool
fn is_kind_of<T>(&self) -> bool
isKindOfClass
directly, or cast your objects with AnyObject::downcast_ref