SmoothSelectionRegion class
A thin SelectableRegion adapter that exposes programmatic selection control.
The widget keeps Flutter's built-in selection overlay, gestures, shortcuts,
handles, magnifier, and toolbar. It adds a stable controller/state surface
for selecting all content, selecting a word or paragraph at a press
position, and dispatching lower-level SelectionEvents to the underlying
SelectionContainer.
Example:
final controller = SmoothSelectionController();
SmoothMarkdown(
data: markdownText,
selectable: true,
selectionController: controller,
)
// Programmatic select-all (shows handles + toolbar):
controller.selectAll(SelectionChangedCause.toolbar);
// Lower-level: dispatch an arbitrary SelectionEvent straight to the
// SelectionContainer (fans out to every text selectable). Does not, by
// itself, drive the overlay.
controller.dispatchEvent(const SelectAllSelectionEvent());
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- SmoothSelectionRegion
Constructors
-
SmoothSelectionRegion({required Widget child, Key? key, FocusNode? focusNode, TextSelectionControls? selectionControls, TextMagnifierConfiguration? magnifierConfiguration, ValueChanged<
SelectedContent?> ? onSelectionChanged, SmoothSelectionContextMenuBuilder? contextMenuBuilder, SmoothSelectionController? controller}) -
Creates a SmoothSelectionRegion.
const
Properties
- child → Widget
-
The child widget this selection region applies to.
final
- contextMenuBuilder → SmoothSelectionContextMenuBuilder?
-
Custom context menu builder. Receives a SmoothSelectionRegionState.
final
- controller → SmoothSelectionController?
-
Optional controller for driving selection without a GlobalKey.
final
- focusNode → FocusNode?
-
An optional focus node to use as the focus node for this widget.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- magnifierConfiguration → TextMagnifierConfiguration?
-
The configuration for the magnifier used with selections in this region.
final
-
onSelectionChanged
→ ValueChanged<
SelectedContent?> ? -
Called when the selected content changes.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- selectionControls → TextSelectionControls?
-
The delegate to build the selection handles and toolbar for mobile devices.
final
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< SmoothSelectionRegion> -
Creates the mutable state for this widget at a given location in the tree.
override
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of DiagnosticsNode objects describing this node's
children.
inherited
-
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
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 widget.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited