I am having trouble implementing MASShortcut (docs here) in a Swift OSX project to listen for global hotkeys. I have managed to import the framework via CocoaPods, and I have a working MASShortcutView instance:
#IBOutlet weak var testShortcutView:MASShortcutView!
I also figured out how to monitor and trigger something with the shortcut (please tell me if this is correct):
let shortcut = MASShortcut(keyCode: keycode, modifierFlags: modifierkeys)
MASShortcutMonitor.sharedMonitor().registerShortcut(shortcut, withAction: callback)
The question here is, how can I get the keyCode and modifierFlags from my MASShortcutView?
I really thank you in advance, I searched everywhere and I can't find an example on how to do this on swift. All I can find is is objective-c, and I can't figure it out.
Following code will register shortcut handler for Cmd+Shift+K key combination
let shortcut = MASShortcut.init(keyCode: UInt(kVK_ANSI_K), modifierFlags: UInt(NSEventModifierFlags.CommandKeyMask.rawValue + NSEventModifierFlags.ShiftKeyMask.rawValue))
MASShortcutMonitor.sharedMonitor().registerShortcut(shortcut, withAction: {
print("Hello world")
})
Cmd and Shift - modifing keys. You should set them in the modifierFlags parameters. Full list of possible values is available in NSEventModifierFlags enum.
For your convenience I have placed sample project on github:
https://github.com/melifaro-/ShortCutSwiftSample
That handles shortcuts changes:
shortcutView.shortcutValueChange = { (sender) in
let callback: (() -> Void)!
if self.shortcutView.shortcutValue.keyCodeStringForKeyEquivalent == "k" {
callback = {
print("K shortcut handler")
}
} else {
callback = {
print("Default handler")
}
}
MASShortcutMonitor.sharedMonitor().registerShortcut(self.shortcutView.shortcutValue, withAction: callback)
}
I have pushed changes into the repo. I would recommend to try following scenario:
Using the shortcut view:
Set Cmd+Shift+K shortcut
Set Cmd+Shift+J shortcut
Try this shortcuts - different callbacks should be performed
Hope it helps.
In Swift 5
let shortcut = MASShortcut(keyCode: kVK_ANSI_K, modifierFlags: [.command, .shift])
MASShortcutMonitor.shared()?.register(shortcut, withAction: {
print("hello")
})
Related
In the Apple developer docs chapter "There and Back Again" the watch app's App is written like this:
#main
struct MyWatchApp: App {
#WKExtensionDelegateAdaptor(ExtensionDelegate.self) var extensionDelegate
#SceneBuilder var body: some Scene {
WindowGroup {
NavigationView {
ContentView()
}
}
}
}
Unfortunately I get a purple runtime warning on my var declaration that says
#WKExtensionDelegateAdaptor should only be used within an extension based process
There must be something in Xcode that explicitly defines the App structure as "extension-based" but I can't find it!
Edit: More clarification... I am trying to handle the special method that gets called after you run the HealthKit method startWatchApp(with:completion:)
The special method for watch extensions is func handle(_ workoutConfiguration: HKWorkoutConfiguration)
I cannot seem to find a way to link this function on the new App structure for watch apps.
Ok, I found it. The solution is to simply replace WKExtensionDelegate with the new WKApplicationDelegate!
You can try this solution, it is simple and universal.
import WatchKit
class ExtensionDelegate: NSObject, WKExtensionDelegate {
static var current: ExtensionDelegate? {
return (WKExtension.shared().delegate as? ExtensionDelegate)
}
...
}
Then access this current instance like below, because it is Singleton, you can access it in the entire project scope.
ExtensionDelegate.current?.dosomething()
In watching the WWDC 21 videos reference StoreKit 2, there are a few functions that they reference wherein they let a value = WindowScene as follows:
func manageSubscriptions() async {
if let windowScene = self.view.window?.windowScene {
do {
try await AppStore.showManageSubscriptions(in: windowScene)
} catch {
//error
}
}
}
The let line errors out with the message: Type of expression is ambiguous without more context
If I try and provide more context with something like:
if let windowScene = (self.view.window?.windowScene)! as UIWindowScene {
I am told: Value of type 'MyStruct' has no member 'view'
What am I missing, must be something simple, to gain access to this needed UI element?
Thank you
Added:
I'd like to add that I am using a SwiftUI app that was created using a SceneDelegate and AppDelegate, not a simple struct: App, type of structure. So I am guessing I need to access something in the SceneDelegate to get the right object..
Just to provide an answer for anyone interested, with all credit to #aheze for finding it and #Matteo Pacini for the solution, to get this specific method to work when using a SwiftUI app that has an AppDelegate/SceneDelegate structure, this will work:
#MainActor
func manageSubscriptions() async {
if let windowScene = UIApplication.shared.connectedScenes.first {
do {
try await AppStore.showManageSubscriptions(in: windowScene as! UIWindowScene)
} catch {
//error
}
}
}
You can conversely use the view modifier manageSubscriptionsSheet(isPresented:) instead. This is Apple's recommended approach when using SwiftUI and will mitigate the need for getting a reference to the window scene.
Source:
If you’re using SwiftUI, call the manageSubscriptionsSheet(isPresented:)view modifier.
I am writing an iOS App (using xcode 7.3 and swift 2.2) using JavascriptCode framework. Calling javascript methods from swift works perfect, but when I call the swift method from javascript, xcode simply shows a "loading" type of symbol and nothing happens. I need to "force quit" xcode to get out of this state.
I have followed https://www.raywenderlich.com/124075/javascriptcore-tutorial and http://nshipster.com/javascriptcore/ and I am trying pretty simple calls.
Has anyone faced this kind of issue?
My swift code is as follows:
#objc protocol WindowJSExports : JSExport {
var name: String { get set }
func getName() -> String
static func createWindowWithName(name: String) -> WindowJS
}
#objc class WindowJS : NSObject, WindowJSExports {
dynamic var name: String
init(name: String) {
self.name = name
}
class func createWindowWithName(name: String) -> WindowJS {
return WindowJS(name: name)
}
func getName() -> String {
NSLog("getName called from JS context")
return "\(name)"
}
}
I am initializing the context as follows:
runContext = JSContext()
runContext.name = "test_Context"
windowToJs = WindowJS(name: "test")
runContext.setObject(windowToJs.self, forKeyedSubscript: "WindowJS")
If I replace the last two lines in above code with below code without instantiating it, the code simply fails to load.
runContext.setObject(WindowJS.self, forKeyedSubscript: "WindowJS")
And the javascript code is as simple as
function check() {
return WindowJS.getName()
}
I do see the breakpoint being hit in the JS function check and when the WindowJS.getName gets called, xcode simply becomes unresponsive.
The setTimeout could be solved by adding following piece of code to my swift function.
let setTimeout: #convention(block) (JSValue, Int) -> () =
{ callback, timeout in
let timeVal = Int64(timeout)
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, timeVal), dispatch_get_main_queue(), { callback.callWithArguments(nil)})
}
To expose this native code to the JS context, I also added following.
runContext.setObject(unsafeBitCast(setTimeout, AnyObject.self), forKeyedSubscript: "setTimeout")
Things then worked fine.
You're creating a deadlock since you are calling from Swift to JavaScript back to Swift. I'm not sure exactly why it is a deadlock but I had a similar issue with WKWebView on Mac recently.
You need to decouple this and make the communication asynchronous. This obviously means you cannot simply return a value from your JS function in this case.
To decouple, you can break the deadlock by deferring the work the JavaScript function needs to do out of the current runloop iteration using setTimeout:
function myFunction() {
setTimeout(function() {
// The actual work is done here.
// Call the Swift part here.
}, 0);
}
The whole native ↔︎ JavaScript communication is very, very tricky. Avoid it if you can. There's a project called XWebView that may be able to help you as it tries to ease bridging between the two worlds.
I've got a test like below:
let navnTextField = app.textFields["First Name"]
let name = "Henrik"
navnTextField.tap()
navnTextField.typeText("Henrik")
XCTAssertEqual(navnTextField.value as? String, name)
Problem is that by default my iPhone Simulator has got Polish keyboard because of the system settings and "Henrik" is automatically changed into "ha" by autocorrect.
Simple solution is to remove Polish keyboard from the iOS Settings. This solution however is not solving the problem because iPhone Simulator can be reset and then test will fail again.
Is there any way to setup autocorrect before test case or other way to input text to text field.
Here's a small extension on XCUIElement to accomplish this
extension XCUIElement {
// The following is a workaround for inputting text in the
//simulator when the keyboard is hidden
func setText(text: String, application: XCUIApplication) {
UIPasteboard.generalPasteboard().string = text
doubleTap()
application.menuItems["Paste"].tap()
}
}
It can be used like this
let app = XCUIApplication()
let enterNameTextField = app.otherElements.textFields["Enter Name"]
enterNameTextField.tap()
enterNameTextField.setText("John Doe", app)
Credit goes to #Apan for the implementation
There is a workaround to use UIPasteboard to provide input text:
let navnTextField = app.textFields["First name"]
navnTextField.tap()
UIPasteboard.generalPasteboard().string = "Henrik"
navnTextField.doubleTap()
app.menuItems.elementBoundByIndex(0).tap()
XCTAssertEqual(navnTextField.value as? String, name)
You can check link with description as a workaround for secure input in GM
Edit
For better readability instead app.menuItems.elementBoundByIndex(0).tap()
you can do app.menuItems["Paste"].tap().
Currently using Swift 4 on Xcode 10
you can now use typeText(String) like this
let app = XCUIApplication()
let usernameTextField = app.textFields["Username"]
usernameTextField.typeText("Caseyp")
For swift v3 need use new sintax (answer by #mike):
extension XCUIElement {
func setText(text: String?, application: XCUIApplication) {
tap()
UIPasteboard.general.string = text
doubleTap()
application.menuItems.element(boundBy: 0).tap()
}
}
and use it:
let app = XCUIApplication()
let enterNameTextField = app.otherElements.textFields["Enter Name"]
enterNameTextField.tap()
enterNameTextField.setText(text: "John Doe", application: app)
Tweaked:
so extension is on application which makes a bit more sense to me
the existing field contents are emptied
code:
extension XCUIApplication {
// The following is a workaround for inputting text in the
//simulator when the keyboard is hidden
func setText(_ text: String, on element: XCUIElement?) {
if let element = element {
UIPasteboard.general.string = text
element.doubleTap()
self.menuItems["Select All"].tap()
self.menuItems["Paste"].tap()
}
}
}
Run with:
self.app?.setText("Lo", on: self.app?.textFields.firstMatch)
I've read Apple's Pasteboard Programming Guide, but it doesn't answer a particular question I have.
I'm trying to write a Cocoa application (for OS X, not iOS) that will keep track of everything that is written to the general pasteboard (so, whenever any application copies and pastes, but not, say, drags-and-drops, which also makes use of NSPasteboard). I could (almost) accomplish this by basically polling the general pasteboard on a background thread constantly, and checking changeCount. Of course, doing this would make me feel very dirty on the inside.
My question is, is there a way to ask the Pasteboard server to notify me through some sort of callback any time a change is made to the general pasteboard? I couldn't find anything in the NSPasteboard class reference, but I'm hoping it lurks somewhere else.
Another way I could imagine accomplishing this is if there was a way to swap out the general pasteboard implementation with a subclass of NSPasteboard that I could define myself to issue a callback. Maybe something like this is possible?
I would greatly prefer if this were possible with public, App Store-legal APIs, but if using a private API is necessary, I'll take that too.
Thanks!
Unfortunately the only available method is by polling (booo!). There are no notifications and there's nothing to observe for changed pasteboard contents. Check out Apple's ClipboardViewer sample code to see how they deal with inspecting the clipboard. Add a (hopefully not overzealous) timer to keep checking for differences and you've got a basic (if clunky) solution that should be App-Store-Friendly.
File an enhancement request at bugreporter.apple.com to request notifications or some other callback. Unfortunately it wouldn't help you until the next major OS release at the earliest but for now it's polling until we all ask them to give us something better.
There was once a post on a mailing list where the decision against a notification api was described. I can't find it right now though. The bottom line was that probably too many applications would register for that api even though they really wouldn't need to. If you then copy something the whole system goes through the new clipboard content like crazy, creating lots of work for the computer. So i don't think they'll change that behavior anytime soon. The whole NSPasteboard API is internally built around using the changeCount, too. So even your custom subclass of NSPasteboard would still have to keep polling.
If you really want to check if the pasteboard changed, just keep observing the changeCount very half second. Comparing integers is really fast so there's really no performance issue here.
Based on answer provided by Joshua I came up with similar implementation but in swift, here is the link to its gist: PasteboardWatcher.swift
Code snippet from same:
class PasteboardWatcher : NSObject {
// assigning a pasteboard object
private let pasteboard = NSPasteboard.generalPasteboard()
// to keep track of count of objects currently copied
// also helps in determining if a new object is copied
private var changeCount : Int
// used to perform polling to identify if url with desired kind is copied
private var timer: NSTimer?
// the delegate which will be notified when desired link is copied
weak var delegate: PasteboardWatcherDelegate?
// the kinds of files for which if url is copied the delegate is notified
private let fileKinds : [String]
/// initializer which should be used to initialize object of this class
/// - Parameter fileKinds: an array containing the desired file kinds
init(fileKinds: [String]) {
// assigning current pasteboard changeCount so that it can be compared later to identify changes
changeCount = pasteboard.changeCount
// assigning passed desired file kinds to respective instance variable
self.fileKinds = fileKinds
super.init()
}
/// starts polling to identify if url with desired kind is copied
/// - Note: uses an NSTimer for polling
func startPolling () {
// setup and start of timer
timer = NSTimer.scheduledTimerWithTimeInterval(2, target: self, selector: Selector("checkForChangesInPasteboard"), userInfo: nil, repeats: true)
}
/// method invoked continuously by timer
/// - Note: To keep this method as private I referred this answer at stackoverflow - [Swift - NSTimer does not invoke a private func as selector](http://stackoverflow.com/a/30947182/217586)
#objc private func checkForChangesInPasteboard() {
// check if there is any new item copied
// also check if kind of copied item is string
if let copiedString = pasteboard.stringForType(NSPasteboardTypeString) where pasteboard.changeCount != changeCount {
// obtain url from copied link if its path extension is one of the desired extensions
if let fileUrl = NSURL(string: copiedString) where self.fileKinds.contains(fileUrl.pathExtension!){
// invoke appropriate method on delegate
self.delegate?.newlyCopiedUrlObtained(copiedUrl: fileUrl)
}
// assign new change count to instance variable for later comparison
changeCount = pasteboard.changeCount
}
}
}
Note: in the shared code I am trying to identify if user has copied a
file url or not, the provided code can easily be modified for other general
purposes.
For those who need simplified version of code snippet that gets the job done in Swift 5.7,
it just works (base on #Devarshi code):
func watch(using closure: #escaping (_ copiedString: String) -> Void) {
let pasteboard = NSPasteboard.general
var changeCount = NSPasteboard.general.changeCount
Timer.scheduledTimer(withTimeInterval: 1.0, repeats: true) { _ in
guard let copiedString = pasteboard.string(forType: .string),
pasteboard.changeCount != changeCount else { return }
defer {
changeCount = pasteboard.changeCount
}
closure(copiedString)
}
}
how to use is as below:
watch {
print("detected : \($0)")
}
then if you attempt copy any text in your pasteboard, it will watch and print out to the console like below..
detected : your copied message in pasteboard
detected : your copied message in pasteboard
in case, full code sample for how to use it for example in SwiftUI:
import SwiftUI
#main
struct TestApp: App {
var body: some Scene {
WindowGroup {
ContentView()
.onAppear {
watch {
print("detect : \($0)")
}
}
}
}
func watch(using closure: #escaping (_ copiedString: String) -> Void) {
let pasteboard = NSPasteboard.general
var changeCount = NSPasteboard.general.changeCount
Timer.scheduledTimer(withTimeInterval: 1.0, repeats: true) { _ in
guard let copiedString = pasteboard.string(forType: .string),
pasteboard.changeCount != changeCount else { return }
defer {
changeCount = pasteboard.changeCount
}
closure(copiedString)
}
}
}
It's not necessary to poll. Pasteboard would generally only be changed by the current view is inactive or does not have focus. Pasteboard has a counter that is incremented when contents change. When window regains focus (windowDidBecomeKey), check if changeCount has changed then process accordingly.
This does not capture every change, but lets your application respond if the Pasteboard is different when it becomes active.
In Swift...
var pasteboardChangeCount = NSPasteboard.general().changeCount
func windowDidBecomeKey(_ notification: Notification)
{ Swift.print("windowDidBecomeKey")
if pasteboardChangeCount != NSPasteboard.general().changeCount
{ viewController.checkPasteboard()
pasteboardChangeCount = NSPasteboard.general().changeCount
}
}
I have a solution for more strict case: detecting when your content in NSPasteboard was replaced by something else.
If you create a class that conforms to NSPasteboardWriting and pass it to -writeObjects: along with the actual content, NSPasteboard will retain this object until its content is replaced. If there are no other strong references to this object, it get deallocated.
Deallocation of this object is the moment when new NSPasteboard got new content.