DragRules class

常用的拖拽规则预设

提供一些常见的拖拽限制规则，可以直接使用或组合使用

Constructors

DragRules()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

leafOnly<T>() → bool? Function(TreeNode<T> dragNode, TreeNode<T>? targetNode, DropPosition position)

只允许叶子节点拖拽

noInside<T>() → bool? Function(TreeNode<T> dragNode, TreeNode<T>? targetNode, DropPosition position)

禁止拖拽到内部（只允许同级排序）