TreeViewTheme class

Defines the appearance of the TreeView.

Used by TreeView to control the appearance of the sub-widgets in the TreeView widget.

Constructors

TreeViewTheme({ColorScheme colorScheme = const ColorScheme.light(), IconThemeData iconTheme = const IconThemeData.fallback(), ExpanderThemeData expanderTheme = const ExpanderThemeData.fallback(), TextStyle labelStyle = const TextStyle(), TextStyle parentLabelStyle = const TextStyle(fontWeight: FontWeight.bold), TextOverflow? labelOverflow, TextOverflow? parentLabelOverflow, double levelPadding = _kDefaultLevelPadding, bool dense = true, double? verticalSpacing, double? horizontalSpacing, double iconPadding = 8, Duration expandSpeed = const Duration(milliseconds: _kExpandSpeed)})

const

TreeViewTheme.fallback()

Creates a TreeView theme with some reasonable default values.

const

Properties

colorScheme → ColorScheme

The ColorScheme for TreeView widget.

final

dense → bool

Whether the TreeNode is vertically dense.

final

expanderTheme → ExpanderThemeData

The appearance theme for TreeNode expander icons.

final

expandSpeed → Duration

the speed at which expander icon animates.

final

hashCode → int

The hash code for this object.

no setter, override

horizontalSpacing → double?

Horizontal spacing between tabs. If this property is null then horizontal spacing between tabs is default _treeView.theme.iconTheme.size + 5

final

iconPadding → double

Horizontal padding for node icons.

final

iconTheme → IconThemeData

The default appearance theme for TreeNode icons.

final

labelOverflow → TextOverflow?

The text overflow for child TreeNode text. If this property is null then softWrap is true;

final

labelStyle → TextStyle

The text style for child TreeNode text.

final

levelPadding → double

The horizontal padding for the children of a TreeNode parent.

final

parentLabelOverflow → TextOverflow?

The text overflow for parent TreeNode text. If this property is null then softWrap is true;

final

parentLabelStyle → TextStyle

The text style for parent TreeNode text.

final

quickExpandSpeed → Duration

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

verticalSpacing → double?

Vertical spacing between tabs. If this property is null then dense attribute will work and vice versa.

final

Methods

copyWith({ColorScheme? colorScheme, IconThemeData? iconTheme, ExpanderThemeData? expanderTheme, TextStyle? labelStyle, TextStyle? parentLabelStyle, TextOverflow? labelOverflow, TextOverflow? parentLabelOverflow, bool? dense, double? verticalSpacing, double? horizontalSpacing, double? iconPadding, double? levelPadding}) → TreeViewTheme

Creates a copy of this theme but with the given fields replaced with the new values.

merge(TreeViewTheme other) → TreeViewTheme

Returns a new theme that matches this TreeView theme but with some values replaced by the non-null parameters of the given icon theme. If the given TreeViewTheme is null, simply returns this theme.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

resolve(BuildContext context) → TreeViewTheme

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

override