Struct MethodToCommandConverter 

pub struct MethodToCommandConverter { /* private fields */ }

A command made from the delegate of a method: what a string-path binding of a method to a command property produces.

Executing the command calls the method, with the command parameter converted to the type of its parameter if it has one. A method Can<Name> with one “any value” parameter, declared by the type that declares the method (or one of its base types), answers whether the command can execute; the properties named by its DependsOn attributes re-query it when the target of the delegate reports that they changed.

A failure of the method (its Err, or a command parameter that cannot be converted to a parameter that takes no null) panics: a command has no other way to report what the managed original throws from Execute.

The command has the target of the delegate as the delegate has it. The delegate a binding reads from its source (MarkupDelegate::for_method_of_source) does not keep the source alive (DEVIATIONS.md, Bindings): once the source is gone the command cannot execute and executing it does nothing, as the command of a compiled binding path (MethodCommand).

Implementations

impl MethodToCommandConverter

pub fn new(action: &MarkupDelegate) -> Rc<Self>

Creates the command of action: the delegate of a declared method (MarkupDelegate::for_method). For any other delegate the command calls it with the command parameter and can always execute.

Trait Implementations

impl Drop for MethodToCommandConverter

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.

impl ICommand for MethodToCommandConverter

fn can_execute(&self, parameter: Option<&BoxedValue>) -> bool

Defines the method that determines whether the command can execute in its current state. parameter is data used by the command; if the command does not require data, it can be None.

fn execute(&self, parameter: Option<&BoxedValue>)

Defines the method to be called when the command is invoked.

fn can_execute_changed(&self, handler: Rc<dyn Fn()>) -> Rc<dyn IDisposable>

Occurs when changes occur that affect whether or not the command should execute. Disposing the returned handle unsubscribes.