Struct MethodCommandNode 

pub struct MethodCommandNode { /* private fields */ }

A node that turns a method of its source into a command.

Implementations

impl MethodCommandNode

pub fn new( method_name: &str, execute: Rc<dyn Fn(&dyn AnyValue, Option<&BoxedValue>)>, can_execute: Option<Rc<dyn Fn(&dyn AnyValue, Option<&BoxedValue>) -> bool>>, depends_on_properties: &[&str], inpc: Option<Rc<dyn Fn(&dyn AnyValue) -> Option<&dyn INotifyPropertyChanged>>>, ) -> Rc<Self>

Creates the node. inpc gives access to the source’s property change notifications, which re-query the command’s state when one of depends_on_properties changes.

Trait Implementations

impl Drop for MethodCommandNode

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 ExpressionNode for MethodCommandNode

fn state(&self) -> &NodeState

fn build_string(&self, builder: &mut String)

Appends a string representation of the node to builder.

fn on_source_changed( &self, source: Option<&BoxedValue>, _data_validation_error: Option<&BindingError>, )

Subscribes to the new source and updates the current value.

fn unsubscribe(&self, old_source: &BoxedValue)

Unsubscribes from the previous source.

fn build_string_with_nodes( &self, builder: &mut String, nodes: &[Rc<dyn ExpressionNode>], )

Builds a string representation of the binding path up to this node.

fn as_settable(&self) -> Option<&dyn ISettableNode>

fn as_property_accessor_node(&self) -> Option<&dyn IPropertyAccessorNode>

fn as_source_node(&self) -> Option<&dyn SourceNode>

fn is_data_context_node(&self) -> bool

Whether the node reads a data context.