InputHandler class abstract Input

Defines a handler that processes InputEvents and produces ResponseInputs.

Implementations are responsible for interpreting user input and returning an appropriate ResponseInput describing how the app should respond (e.g., exit, redraw components, or ignore the input).

Lifecycle

  • An InputHandler instance typically lives for as long as its owning component is active.
  • The handleInput method is called whenever a new InputEvent needs to be processed.

Example

class QuitOnEscapeHandler extends InputHandler {
  @override
  ResponseInput handleInput(InputEvent event) {
    if (event is KeyEvent && event.code == KeyCode.escape) {
      return ResponseInput(commands: ResponseCommands.exit, handled: true);
    }
    return ResponseInput.ignored();
  }
}
Implementers

Constructors

InputHandler()

Properties

hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

handleInput(InputEvent event) → ResponseInput
Processes an incoming InputEvent and returns a ResponseInput describing the result of handling it.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited