KeyboardObserver
public final class KeyboardObserver
Mechanica
KeyboardObserver
is an UIKit keyboard’s behavior observer (for iOS apps) without Notification Center.
Declare what should happen on what event and register()
.
Example:
let keyboard = KeyboardObserver()
keyboard
.on(event: .didShow) { (options) in
print("didShow")
}
.on(event: .didHide) { (options) in
print("didHide")
}
.register()
You must call register()
for callbacks to be triggered.
Calling unregister()
will stop callbacks from triggering (UIKit’s notifications won’t be observed anymore), but callbacks themselves won’t be dismissed;
you can resume event callbacks by calling register()
again.
To remove all event callbacks, call clear()
.
-
Mechanica
A
KeyboardObserver
callback.Declaration
Swift
public typealias Callback = (Options) -> Void
-
Declaration
Swift
public struct Options
-
Mechanica
Keyboard events that can happen. Translates directly to
See moreUIKeyboard
notifications from UIKit.Declaration
Swift
public enum Event
-
Mechanica
Defines
KeyboardObserver
behaviours.Warning
Without callingregister()
none of the closures will be executed.Warning
If more closures are declared on the same event, only the latter will be executed.
Parameters
event
KeyboardObserver
event on which callback should be executed.callback
Closure of code which will be executed on
KeyboardObserver
.Return Value
Self
for chaining purpose. -
Mechanica
Initializes a new instance of
KeyboardObserver
.Declaration
Swift
public init()
-
Mechanica
Registers for
KeyboardObserver
events and starts calling corresponding event handlers.Declaration
Swift
public final func register()
-
Mechanica
Remove all event callbacks.
Declaration
Swift
public final func clear()
-
Mechanica
Unregister from
KeyboardObserver
events.Warning
callbacks themselves won’t be dismissed.Declaration
Swift
public final func unregister()