Struct WKWebExtensionWindowConfiguration

Source

#[repr(C)]
pub struct WKWebExtensionWindowConfiguration { /* private fields */ }

Available on crate feature WKWebExtensionWindowConfiguration only.

Expand description

A WKWebExtensionWindowConfiguration object encapsulates configuration options for a window in an extension.

This class holds various options that influence the behavior and initial state of a window. The app retains the discretion to disregard any or all of these options, or even opt not to create a window.

Implementations§

Source §

pub unsafe fn windowType(&self) -> WKWebExtensionWindowType

Available on crate feature WKWebExtensionWindow only.

Indicates the window type for the window.

Source

pub unsafe fn windowState(&self) -> WKWebExtensionWindowState

Available on crate feature WKWebExtensionWindow only.

Indicates the window state for the window.

Source

pub unsafe fn frame(&self) -> CGRect

Available on crate feature objc2-core-foundation only.

Indicates the frame where the window should be positioned on the main screen.

This frame should override the app’s default window position and size. Individual components (e.g., origin.x, size.width) will be NaN if not specified.

Source

pub unsafe fn tabURLs(&self) -> Retained<NSArray<NSURL>>

Indicates the URLs that the window should initially load as tabs.

If tabURLs and tabs are both empty, the app’s default “start page” should appear in a tab.

pub unsafe fn tabs( &self, ) -> Retained<NSArray<ProtocolObject<dyn WKWebExtensionTab>>>

Available on crate feature WKWebExtensionTab only.

Indicates the existing tabs that should be moved to the window.

If tabs and tabURLs are both empty, the app’s default “start page” should appear in a tab.

pub unsafe fn shouldBeFocused(&self) -> bool

Indicates whether the window should be focused.

Source

pub unsafe fn shouldBePrivate(&self) -> bool

Indicates whether the window should be private.

Note: To ensure proper isolation between private and non-private data, web views associated with private data must use a different WKUserContentController. Likewise, to be identified as a private web view and to ensure that cookies and other website data is not shared, private web views must be configured to use a non-persistent WKWebsiteDataStore.

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());

Source

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.

Source

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`
    }
}