CellWatcher class abstract
Maintains the state of a cell watcher.
A cell watcher is a function which is called whenever the values of the cells referenced within it change.
- Implementers
Constructors
- CellWatcher({dynamic key})
-
Create a CellWatcher identified by
key.
Properties
- callback → WatchCallback
-
The watch callback function
no setter
- hashCode → int
-
The hash code for this object.
no setteroverride
- isInitialized → bool
-
Has the watch function been called once to initialize its dependencies.
no setter
- key ↔ dynamic
-
Key identifying watch function
latefinal
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
afterInit(
) → void - Exit the watch function on the first call.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
start(
) → void - Start the cell watcher
-
stop(
) → void - Stop watching the referenced cells.
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
override
Static Methods
-
stopByKey(
dynamic key) → void -
Stop the watch function identified by
key.