pub trait Request {
// Required methods
fn result(&self) -> Result<JsValue, Error>;
fn error(&self) -> Result<Option<DomException>, Error>;
fn source(&self) -> Result<Object, Error>;
fn transaction(&self) -> Option<Transaction>;
fn ready_state(&self) -> Result<RequestReadyState, Error>;
fn on_success<F>(&mut self, callback: F)
where F: FnOnce(Event) + 'static;
fn on_error<F>(&mut self, callback: F)
where F: FnOnce(Event) + 'static;
}
Expand description
Specifies all the functions supported by request objects.
Required Methods§
sourcefn result(&self) -> Result<JsValue, Error>
fn result(&self) -> Result<JsValue, Error>
When a request is completed, returns the result
, or undefined
if the request failed. Returns an Error
if
the request is still pending.
sourcefn error(&self) -> Result<Option<DomException>, Error>
fn error(&self) -> Result<Option<DomException>, Error>
When a request is completed, returns the error
(a DOMException
), or None
if the request succeeded. Returns
an Error
if the request is still pending.
sourcefn source(&self) -> Result<Object, Error>
fn source(&self) -> Result<Object, Error>
Returns the ObjectStore
, Index
, or Cursor
the request was made against, or null
if it was an open
request.
sourcefn transaction(&self) -> Option<Transaction>
fn transaction(&self) -> Option<Transaction>
Returns the Transaction
the request was made within. If this as an open request, then it returns an upgrade
transaction while it is running, or None
otherwise.
sourcefn ready_state(&self) -> Result<RequestReadyState, Error>
fn ready_state(&self) -> Result<RequestReadyState, Error>
Returns RequestReadyState::Pending
until a request is complete, then returns RequestReadyState::Done
.
sourcefn on_success<F>(&mut self, callback: F)
fn on_success<F>(&mut self, callback: F)
Adds an event handler for success
event.
Object Safety§
This trait is not object safe.