SuperSliverMultiBoxAdaptorElement class

Inheritance

• Object
• DiagnosticableTree
• Element
• RenderObjectElement
• SliverMultiBoxAdaptorElement
• SuperSliverMultiBoxAdaptorElement

Implemented types

• ExtentManagerDelegate

Available extensions

• BuildContextExtension
• SurfaceContext

Constructors

SuperSliverMultiBoxAdaptorElement(SuperSliverList widget, {required bool replaceMovedChildren})

Properties

appBarInset → double

Available on BuildContext, provided by the BuildContextExtension extension

Where a page's app bar ends, for a body built outside the scaffold's.

no setter

bottomInset → double

Available on BuildContext, provided by the BuildContextExtension extension

What the end of a body scrolls clear of: the system bar the body runs under and what floats over its foot. A docked search only counts below the scaffold that docks it.

no setter

buildScope → BuildScope

A BuildScope whose dirty Elements can only be rebuilt by BuildOwner.buildScope calls whose context argument is an Element within this BuildScope.

no setter, inherited

cardHeaderStyle → TextStyle

Available on BuildContext, provided by the BuildContextExtension extension

no setter

childCount → int

Called to obtain a precise measure of the total number of children.

no setter, inherited

colorScheme → ColorScheme

Available on BuildContext, provided by the BuildContextExtension extension

no setter

contentTopPadding → double

Available on BuildContext, provided by the BuildContextExtension extension

A compact sheet's header already trails its own gap.

no setter

debugDoingBuild → bool

Whether the widget is currently updating the widget or render tree.

no setter, inherited

debugIsActive → bool

Returns true if the Element is active.

no setter, inherited

debugIsDefunct → bool

Returns true if the Element is defunct.

no setter, inherited

depth → int

An integer that is guaranteed to be greater than the parent's, if any. The element at the root of the tree must have a depth greater than 0.

no setter, inherited

dirty → bool

Returns true if the element has been marked as needing rebuilding.

no setter, inherited

disableAnimations → bool

Available on BuildContext, provided by the BuildContextExtension extension

no setter

estimatedChildCount → int?

The best available estimate of childCount, or null if no estimate is available.

no setter, inherited

extentManager → ExtentManager

no setter

hashCode → int

The hash code for this object.

no setter, inherited

isInCompactSheet → bool

Available on BuildContext, provided by the BuildContextExtension extension

no setter

isMobileView → bool

Available on BuildContext, provided by the BuildContextExtension extension

no setter

listCaptionStyle → TextStyle

Available on BuildContext, provided by the BuildContextExtension extension

no setter

listSubtitleStyle → TextStyle

Available on BuildContext, provided by the BuildContextExtension extension

no setter

listTitleStyle → TextStyle

Available on BuildContext, provided by the BuildContextExtension extension

no setter

mounted → bool

Whether the Widget this context is associated with is currently mounted in the widget tree.

no setter, inherited

owner → BuildOwner?

The object that manages the lifecycle of this element.

no setter, inherited

raisedSurfaceLevel → SurfaceLevel

Available on BuildContext, provided by the SurfaceContext extension

no setter

renderObject → RenderSuperSliverList

The underlying RenderObject for this element.

no setter, override

renderObjectAttachingChild → Element?

Returns the child of this Element that will insert a RenderObject into an ancestor of this Element to construct the render tree.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

sectionsTopPadding → double

Available on BuildContext, provided by the BuildContextExtension extension

For a page that opens on a section: the section's own gap above it then lands it where contentTopPadding puts any other page's content.

no setter

size → Size?

The size of the RenderBox returned by findRenderObject.

no setter, inherited

slot → Object?

Information set by parent to define where this child fits in its parent's child list.

no setter, inherited

surfaceLevel → SurfaceLevel

Available on BuildContext, provided by the SurfaceContext extension

no setter

widget → Widget

The configuration for this element.

no setter, inherited

Methods

activate() → void

Transition from the "inactive" to the "active" lifecycle state.

inherited

attachNotificationTree() → void

Called in Element.mount and Element.activate to register this element in the notification tree.

inherited

attachRenderObject(Object? newSlot) → void

Add renderObject to the render tree at the location specified by newSlot.

inherited

createChild(int index, {required RenderBox? after}) → void

Called during layout when a new child is needed. The child should be inserted into the child list in the appropriate position, after the after child (at the start of the list if after is null). Its index and scroll offsets will automatically be set appropriately.

inherited

deactivate() → void

Transition from the "active" to the "inactive" lifecycle state.

override

deactivateChild(Element child) → void

Move the given element to the list of inactive elements and detach its render object from the render tree.

inherited

debugAssertChildListLocked() → bool

In debug mode, asserts that this manager is not expecting any modifications to the RenderSliverMultiBoxAdaptor's child list.

inherited

debugDeactivated() → void

Called, in debug mode, after children have been deactivated (see deactivate).

inherited

debugDescribeChildren() → List<DiagnosticsNode>

Returns a list of DiagnosticsNode objects describing this node's children.

inherited

debugExpectsRenderObjectForSlot(Object? slot) → bool

Whether the child in the provided slot (or one of its descendants) must insert a RenderObject into its ancestor RenderObjectElement by calling RenderObjectElement.insertRenderObjectChild on it.

inherited

debugFillProperties(DiagnosticPropertiesBuilder properties) → void

Add additional properties associated with the node.

inherited

debugGetCreatorChain(int limit) → String

Returns a description of what caused this element to be created.

inherited

debugGetDiagnosticChain() → List<Element>

Returns the parent chain from this element back to the root of the tree.

inherited

debugVisitOnstageChildren(ElementVisitor visitor) → void

Calls the argument for each child considered onstage.

inherited

dependOnInheritedElement(InheritedElement ancestor, {Object? aspect}) → InheritedWidget

Registers this build context with ancestor such that when ancestor's widget changes this build context is rebuilt.

inherited

dependOnInheritedWidgetOfExactType<T extends InheritedWidget>({Object? aspect}) → T?

Returns the nearest widget of the given type T and creates a dependency on it, or null if no appropriate widget is found.

inherited

describeElement(String name, {DiagnosticsTreeStyle style = DiagnosticsTreeStyle.errorProperty}) → DiagnosticsNode

Returns a description of the Element associated with the current build context.

inherited

describeMissingAncestor({required Type expectedAncestorType}) → List<DiagnosticsNode>

Adds a description of a specific type of widget missing from the current build context's ancestry tree.

inherited

describeOwnershipChain(String name) → DiagnosticsNode

Adds a description of the ownership chain from a specific Element to the error report.

inherited

describeWidget(String name, {DiagnosticsTreeStyle style = DiagnosticsTreeStyle.errorProperty}) → DiagnosticsNode

Returns a description of the Widget associated with the current build context.

inherited

detachRenderObject() → void

Remove renderObject from the render tree.

inherited

didAdoptChild(RenderBox child) → void

Called during RenderSliverMultiBoxAdaptor.adoptChild or RenderSliverMultiBoxAdaptor.move.

inherited

didChangeDependencies() → void

Called when a dependency of this element changes.

inherited

didFinishLayout() → void

Called at the end of layout to indicate that layout is now complete.

inherited

didStartLayout() → void

Called at the beginning of layout to indicate that layout is about to occur.

inherited

dispatchNotification(Notification notification) → void

Start bubbling this notification at the given build context.

inherited

doesDependOnInheritedElement(InheritedElement ancestor) → bool

Returns true if dependOnInheritedElement was previously called with ancestor.

inherited

estimateExtentForItem(int? index) → double

override

estimateMaxScrollOffset(SliverConstraints? constraints, {int? firstIndex, int? lastIndex, double? leadingScrollOffset, double? trailingScrollOffset}) → double

Called to estimate the total scrollable extents of this object.

inherited

findAncestorRenderObjectOfType<T extends RenderObject>() → T?

Returns the RenderObject object of the nearest ancestor RenderObjectWidget widget that is an instance of the given type T.

inherited

findAncestorStateOfType<T extends State<StatefulWidget>>() → T?

Returns the State object of the nearest ancestor StatefulWidget widget that is an instance of the given type T.

inherited

findAncestorWidgetOfExactType<T extends Widget>() → T?

Returns the nearest ancestor widget of the given type T, which must be the type of a concrete Widget subclass.

inherited

findRenderObject() → RenderObject?

The current RenderObject for the widget. If the widget is a RenderObjectWidget, this is the render object that the widget created for itself. Otherwise, it is the render object of the first descendant RenderObjectWidget.

inherited

findRootAncestorStateOfType<T extends State<StatefulWidget>>() → T?

Returns the State object of the furthest ancestor StatefulWidget widget that is an instance of the given type T.

inherited

forgetChild(Element child) → void

Remove the given child from the element's child list, in preparation for the child being reused elsewhere in the element tree.

inherited

getElementForInheritedWidgetOfExactType<T extends InheritedWidget>() → InheritedElement?

Obtains the element corresponding to the nearest widget of the given type T, which must be the type of a concrete InheritedWidget subclass.

inherited

getInheritedWidgetOfExactType<T extends InheritedWidget>() → T?

Returns the nearest widget of the given InheritedWidget subclass T or null if an appropriate ancestor is not found.

inherited

getOffsetToReveal(int index, double alignment, {required bool estimationOnly, Rect? rect}) → double

override

inflateWidget(Widget newWidget, Object? newSlot) → Element

Create an element for the given widget and add it as a child of this element in the given slot.

inherited

insertRenderObjectChild(covariant RenderObject child, covariant int slot) → void

Insert the given child into renderObject at the given slot.

inherited

markNeedsBuild() → void

Marks the element as dirty and adds it to the global list of widgets to rebuild in the next frame.

inherited

motionDuration(Duration duration) → Duration

Available on BuildContext, provided by the BuildContextExtension extension

mount(Element? parent, Object? newSlot) → void

Add this element to the tree in the given slot of the given parent.

inherited

moveRenderObjectChild(covariant RenderObject child, covariant int oldSlot, covariant int newSlot) → void

Move the given child from the given old slot to the given new slot.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

performRebuild() → void

Cause the widget to update itself.

inherited

reassemble() → void

Called whenever the application is reassembled during debugging, for example during hot reload.

inherited

rebuild({bool force = false}) → void

Cause the widget to update itself. In debug builds, also verify various invariants.

inherited

removeChild(RenderBox child) → void

Remove the given child from the child list.

inherited

removeRenderObjectChild(covariant RenderObject child, covariant int slot) → void

Remove the given child from renderObject.

inherited

safeNestedPop<T extends Object?>([T? result]) → void

Available on BuildContext, provided by the BuildContextExtension extension

setDidUnderflow(bool value) → void

Called during layout to indicate whether this object provided insufficient children for the RenderSliverMultiBoxAdaptor to fill the SliverConstraints.remainingPaintExtent.

inherited

toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode

Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.

inherited

toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String

A string representation of this object.

inherited

toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String

Returns a string representation of this node and its descendants.

inherited

toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String

Returns a one-line detailed description of the object.

inherited

toStringShort() → String

A short, textual description of this element.

inherited

unmount() → void

Transition from the "inactive" to the "defunct" lifecycle state.

inherited

update(covariant SuperSliverList newWidget) → void

Change the widget used to configure this element.

override

updateChild(Element? child, Widget? newWidget, Object? newSlot) → Element?

Update the given child with the given new configuration.

inherited

updateChildren(List<Element> oldChildren, List<Widget> newWidgets, {Set<Element>? forgottenChildren, List<Object?>? slots}) → List<Element>

Updates the children of this element to use new widgets.

inherited

updateSlot(Object? newSlot) → void

Called by updateSlotForChild when the framework needs to change the slot that this Element occupies in its ancestor.

inherited

updateSlotForChild(Element child, Object? newSlot) → void

Change the slot that the given child occupies in its parent.

inherited

visitAncestorElements(ConditionalElementVisitor visitor) → void

Walks the ancestor chain, starting with the parent of this build context's widget, invoking the argument for each ancestor.

inherited

visitChildElements(ElementVisitor visitor) → void

Wrapper around visitChildren for BuildContext.

inherited

visitChildren(ElementVisitor visitor) → void

Calls the argument for each child. Must be overridden by subclasses that support having children.

inherited

Operators

operator ==(Object other) → bool

Compare two widgets for equality.

inherited