dart:async
ZoneSpecification class
This class provides the specification for a forked zone.
When forking a new zone (see Zone.fork) one can override the default behavior of the zone by providing callbacks. These callbacks must be given in an instance of this class.
Handlers have the same signature as the same-named methods on Zone but receive three additional arguments:
- the zone the handlers are attached to (the "self" zone).
- a ZoneDelegate to the parent zone.
- the zone that first received the request (before the request was bubbled up).
Handlers can either stop propagation the request (by simply not calling the parent handler), or forward to the parent zone, potentially modifying the arguments on the way.
Constructors
- ZoneSpecification({HandleUncaughtErrorHandler handleUncaughtError, RunHandler run, RunUnaryHandler runUnary, RunBinaryHandler runBinary, RegisterCallbackHandler registerCallback, RegisterUnaryCallbackHandler registerUnaryCallback, RegisterBinaryCallbackHandler registerBinaryCallback, ErrorCallbackHandler errorCallback, ScheduleMicrotaskHandler scheduleMicrotask, CreateTimerHandler createTimer, CreatePeriodicTimerHandler createPeriodicTimer, PrintHandler print, ForkHandler fork })
const
factory
- Creates a specification with the provided handlers.
- ZoneSpecification.from(ZoneSpecification other, { HandleUncaughtErrorHandler handleUncaughtError: null, RunHandler run: null, RunUnaryHandler runUnary: null, RunBinaryHandler runBinary: null, RegisterCallbackHandler registerCallback: null, RegisterUnaryCallbackHandler registerUnaryCallback: null, RegisterBinaryCallbackHandler registerBinaryCallback: null, ErrorCallbackHandler errorCallback: null, ScheduleMicrotaskHandler scheduleMicrotask: null, CreateTimerHandler createTimer: null, CreatePeriodicTimerHandler createPeriodicTimer: null, PrintHandler print: null, ForkHandler fork: null })
factory
- Creates a specification from
other with the provided handlers overriding the ones in other.
Properties
- createPeriodicTimer → CreatePeriodicTimerHandler
read-only
- createTimer → CreateTimerHandler
read-only
- errorCallback → ErrorCallbackHandler
read-only
- fork → ForkHandler
read-only
- handleUncaughtError → HandleUncaughtErrorHandler
read-only
- print → PrintHandler
read-only
- registerBinaryCallback → RegisterBinaryCallbackHandler<R, T1, T2>
read-only
- registerCallback → RegisterCallbackHandler<R>
read-only
- registerUnaryCallback → RegisterUnaryCallbackHandler<R, T>
read-only
- run → RunHandler<R>
read-only
- runBinary → RunBinaryHandler<R, T1, T2>
read-only
- runUnary → RunUnaryHandler<R, T>
read-only
- scheduleMicrotask → ScheduleMicrotaskHandler
read-only
- hashCode → int
read-only, inherited
- The hash code for this object. [...]
- runtimeType → Type
read-only, inherited
- A representation of the runtime type of the object.
Methods
- noSuchMethod(Invocation invocation) → dynamic
inherited
- Invoked when a non-existent method or property is accessed. [...]
- toString() → String
inherited
- Returns a string representation of this object.
Operators
- operator ==(dynamic other) → bool
inherited
- The equality operator. [...]