ScrollState#

Annotations: @Native.new("ScrollState")

Constructors#

ScrollState() factory#

factory ScrollState([Map? scrollStateInit]) {
  if (scrollStateInit != null) {
    var scrollStateInit_1 = convertDartToNative_Dictionary(scrollStateInit);
    return ScrollState._create_1(scrollStateInit_1);
  }
  return ScrollState._create_2();
}

Properties#

deltaGranularity no setter#

num? get deltaGranularity native;

deltaX no setter#

num? get deltaX native;

deltaY no setter#

num? get deltaY native;

fromUserInput no setter#

bool? get fromUserInput native;

hashCode no setter inherited#

Inherited from Interceptor.

int get hashCode => Primitives.objectHashCode(this);

inInertialPhase no setter#

bool? get inInertialPhase native;

isBeginning no setter#

bool? get isBeginning native;

isDirectManipulation no setter#

bool? get isDirectManipulation native;

isEnding no setter#

bool? get isEnding native;

positionX no setter#

int? get positionX native;

positionY no setter#

int? get positionY native;

runtimeType no setter inherited#

Inherited from Interceptor.

Type get runtimeType =>
    getRuntimeTypeOfInterceptorNotArray(getInterceptor(this), this);

velocityX no setter#

num? get velocityX native;

velocityY no setter#

num? get velocityY native;

Methods#

consumeDelta()#

void consumeDelta(num x, num y) native;

distributeToScrollChainDescendant()#

void distributeToScrollChainDescendant() native;

noSuchMethod() inherited#

Invoked when a nonexistent method or property is accessed.

A dynamic member invocation can attempt to call a member which doesn't exist on the receiving object. Example:

dynamic object = 1;
object.add(42); // Statically allowed, run-time error

This invalid code will invoke the noSuchMethod method of the integer 1 with an Invocation representing the .add(42) call and arguments (which then throws).

Classes can override noSuchMethod to provide custom behavior for such invalid dynamic invocations.

A class with a non-default noSuchMethod invocation can also omit implementations for members of its interface. Example:

class MockList<T> implements List<T> {
  noSuchMethod(Invocation invocation) {
    log(invocation);
    super.noSuchMethod(invocation); // Will throw.
  }
}
void main() {
  MockList().add(42);
}

This code has no compile-time warnings or errors even though the MockList class has no concrete implementation of any of the List interface methods. Calls to List methods are forwarded to noSuchMethod, so this code will log an invocation similar to Invocation.method(#add, [42]) and then throw.

If a value is returned from noSuchMethod, it becomes the result of the original invocation. If the value is not of a type that can be returned by the original invocation, a type error occurs at the invocation.

The default behavior is to throw a NoSuchMethodError.

Inherited from Interceptor.

dynamic noSuchMethod(Invocation invocation) {
  throw NoSuchMethodError.withInvocation(this, invocation);
}

toString() inherited#

A string representation of this object.

Some classes have a default textual representation, often paired with a static parse function (like int.parse). These classes will provide the textual representation as their string representation.

Other classes have no meaningful textual representation that a program will care about. Such classes will typically override toString to provide useful information when inspecting the object, mainly for debugging or logging.

Inherited from Interceptor.

String toString() => Primitives.objectToHumanReadableString(this);

Operators#

operator ==() inherited#

The equality operator.

The default behavior for all Objects is to return true if and only if this object and other are the same object.

Override this method to specify a different equality relation on a class. The overriding method must still be an equivalence relation. That is, it must be:

• Total: It must return a boolean for all arguments. It should never throw.

• Reflexive: For all objects o, o == o must be true.

• Symmetric: For all objects o1 and o2, o1 == o2 and o2 == o1 must either both be true, or both be false.

• Transitive: For all objects o1, o2, and o3, if o1 == o2 and o2 == o3 are true, then o1 == o3 must be true.

The method should also be consistent over time, so whether two objects are equal should only change if at least one of the objects was modified.

If a subclass overrides the equality operator, it should override the hashCode method as well to maintain consistency.

Inherited from Interceptor.

bool operator ==(Object other) => identical(this, other);