NZDropDownMenu<T> class
NZDropDownMenu 是一个微信风格的下拉菜单组件。 它通常用于在导航栏或其他触发器下方显示一组操作或选项。 采用项目主色调 (NZColor.nezhaPrimary) 作为强调色。
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- NZDropDownMenu
Constructors
-
NZDropDownMenu({Key? key, required List<
NZDropDownMenuItem< items, T? value, ValueChanged<T> >T?> ? onChanged, String hint = '请选择', bool isExpanded = false, Color? backgroundColor, Color? textColor, Color? activeColor, NZDropDownMenuType type = NZDropDownMenuType.outline, NZDropDownMenuSize size = NZDropDownMenuSize.medium, double? borderRadius, double elevation = 8.0, double itemHeight = 48.0, IconData? icon, bool showCheckIcon = true}) -
const
Properties
- activeColor → Color?
-
激活状态的颜色（主色调）
final
- backgroundColor → Color?
-
背景颜色
final
- borderRadius → double?
-
圆角半径
final
- elevation → double
-
菜单阴影高度
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- hint → String
-
菜单触发器的占位文本
final
- icon → IconData?
-
右侧图标
final
- isExpanded → bool
-
是否展开
final
- itemHeight → double
-
选项高度
final
-
items
→ List<
NZDropDownMenuItem< T> > -
菜单选项列表
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
-
菜单最大高度
final
-
onChanged
→ ValueChanged<
T?> ? -
选项改变时的回调
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- showCheckIcon → bool
-
是否显示选中状态的打钩图标
final
- size → NZDropDownMenuSize
-
尺寸
final
- textColor → Color?
-
文本颜色
final
- type → NZDropDownMenuType
-
样式类型
final
- value → T?
-
当前选中的值
final
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< NZDropDownMenu< T> > -
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