ColumnSeparator class
A widget that displays a draggable separator between columns in a table.
ColumnSeparator allows users to interact with the column boundary, typically for resizing or measuring column widths. It displays a visual separator and handles gestures such as double-tap and horizontal drag.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- ColumnSeparator
Constructors
-
ColumnSeparator({Key? key, required double shrinkOffset, required int rowIndex, required int columnIndex, required List<
HeaderRow> buildedHeaderRows, required bool resizable, bool? pinLeft, bool? pinRight, required TreeDataTableProvider provider, String? persistColumnStateId}) -
Creates a ColumnSeparator widget.
const
Properties
-
buildedHeaderRows
→ List<
HeaderRow> -
The list of built header rows containing column widgets.
final
- columnIndex → int
-
The index of the column to measure.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- persistColumnStateId → String?
-
Optional identifier for persisting column state.
final
- pinLeft → bool?
-
Column is pinned to the left side
final
- pinRight → bool?
-
Column is pinned to the right side
final
- provider → TreeDataTableProvider
-
The provider that manages the state and logic for the tree data table.
final
- resizable → bool
-
A flag indicating whether the column is resizable by
the user.
final
- rowIndex → int
-
The index of the row.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- shrinkOffset → double
-
The current shrink offset of the header, used to determine the position
of the separator relative to the header's scroll position.
final
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< ColumnSeparator> -
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