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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| import Cocoa | ||
| import ApplicationServices.HIServices.AXUIElement | ||
| import ApplicationServices.HIServices.AXValue | ||
| import ApplicationServices.HIServices.AXError | ||
| import ApplicationServices.HIServices.AXRoleConstants | ||
| import ApplicationServices.HIServices.AXAttributeConstants | ||
| import ApplicationServices.HIServices.AXActionConstants | ||
|
|
||
| extension AXUIElement { | ||
| func axCallWhichCanThrow<T>(_ result: AXError, _ successValue: inout T) throws -> T? { | ||
| switch result { | ||
| case .success: return successValue | ||
| // .cannotComplete can happen if the app is unresponsive; we throw in that case to retry until the call succeeds | ||
| case .cannotComplete: throw AxError.runtimeError | ||
| // for other errors it's pointless to retry | ||
| default: return nil | ||
| } | ||
| } | ||
|
|
||
| func cgWindowId() throws -> CGWindowID? { | ||
| var id = CGWindowID(0) | ||
| return try axCallWhichCanThrow(_AXUIElementGetWindow(self, &id), &id) | ||
| } | ||
|
|
||
| func pid() throws -> pid_t? { | ||
| var pid = pid_t(0) | ||
| return try axCallWhichCanThrow(AXUIElementGetPid(self, &pid), &pid) | ||
| } | ||
|
|
||
| func attribute<T>(_ key: String, _ _: T.Type) throws -> T? { | ||
| var value: AnyObject? | ||
| return try axCallWhichCanThrow(AXUIElementCopyAttributeValue(self, key as CFString, &value), &value) as? T | ||
| } | ||
|
|
||
| private func value<T>(_ key: String, _ target: T, _ type: AXValueType) throws -> T? { | ||
| if let a = try attribute(key, AXValue.self) { | ||
| var value = target | ||
| AXValueGetValue(a, type, &value) | ||
| return value | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func position() throws -> CGPoint? { | ||
| return try value(kAXPositionAttribute, CGPoint.zero, .cgPoint) | ||
| } | ||
|
|
||
| func size() throws -> CGSize? { | ||
| return try value(kAXSizeAttribute, CGSize.zero, .cgSize) | ||
| } | ||
|
|
||
| func title() throws -> String? { | ||
| return try attribute(kAXTitleAttribute, String.self) | ||
| } | ||
|
|
||
| func parent() throws -> AXUIElement? { | ||
| return try attribute(kAXParentAttribute, AXUIElement.self) | ||
| } | ||
|
|
||
| func children() throws -> [AXUIElement]? { | ||
| return try attribute(kAXChildrenAttribute, [AXUIElement].self) | ||
| } | ||
|
|
||
| func windows() throws -> [AXUIElement]? { | ||
| return try attribute(kAXWindowsAttribute, [AXUIElement].self) | ||
| } | ||
|
|
||
| func isMinimized() throws -> Bool { | ||
| return try attribute(kAXMinimizedAttribute, Bool.self) == true | ||
| } | ||
|
|
||
| func isFullscreen() throws -> Bool { | ||
| return try attribute(kAXFullscreenAttribute, Bool.self) == true | ||
| } | ||
|
|
||
| func focusedWindow() throws -> AXUIElement? { | ||
| return try attribute(kAXFocusedWindowAttribute, AXUIElement.self) | ||
| } | ||
|
|
||
| func role() throws -> String? { | ||
| return try attribute(kAXRoleAttribute, String.self) | ||
| } | ||
|
|
||
| func subrole() throws -> String? { | ||
| return try attribute(kAXSubroleAttribute, String.self) | ||
| } | ||
|
|
||
| func appIsRunning() throws -> Bool? { | ||
| return try attribute(kAXIsApplicationRunningAttribute, Bool.self) | ||
| } | ||
|
|
||
| func closeButton() throws -> AXUIElement? { | ||
| return try attribute(kAXCloseButtonAttribute, AXUIElement.self) | ||
| } | ||
|
|
||
| func subscribeToNotification(_ axObserver: AXObserver, _ notification: String, _ callback: (() -> Void)? = nil) throws { | ||
| let result = AXObserverAddNotification(axObserver, self, notification as CFString, nil) | ||
| if result == .success || result == .notificationAlreadyRegistered { | ||
| callback?() | ||
| } else if result != .notificationUnsupported && result != .notImplemented { | ||
| throw AxError.runtimeError | ||
| } | ||
| } | ||
|
|
||
| func setAttribute(_ key: String, _ value: Any) throws { | ||
| var unused: Void = () | ||
| try axCallWhichCanThrow(AXUIElementSetAttributeValue(self, key as CFString, value as CFTypeRef), &unused) | ||
| } | ||
|
|
||
| func performAction(_ action: String) throws { | ||
| var unused: Void = () | ||
| try axCallWhichCanThrow(AXUIElementPerformAction(self, action as CFString), &unused) | ||
| } | ||
| } | ||
|
|
||
| enum AxError: Error { | ||
| case runtimeError | ||
| } |
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