SelectedDataProvider<T> class

管理已选择数据的类

该类允许单选和多选模式，支持数据的添加、移除和更新，并通过监听器通知数据变化。

T 是选中数据的类型。

Mixed-in types

Constructors

SelectedDataProvider({bool equalPredict(T selected, T data)?, bool unique = true, bool single = false}): 构造函数，初始化选中数据的比较器、单选和唯一性标志

data → List<T>: 获取已选的数据（返回一个不可修改的列表）
no setter
equalPredict → bool Function(T selected, T data): 用于比较选中数据和其他数据是否相同的函数
final
hashCode → int: The hash code for this object.
no setterinherited
hasListeners → bool: Whether any listeners are currently registered.
no setterinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
single → bool: 是否允许单选（即只允许选中一个数据）
final
unique → bool: 是否确保选中的数据集合唯一
final

add(T data, {bool removeWhenExist = false}) → void: 如果数据不存在，则将数据添加到已选数据中
addListener(VoidCallback listener) → void: Register a closure to be called when the object changes.
override
contains(T? data) → bool: 判断是否包含指定的数据
dispose() → void: Discards any resources used by the object. After this is called, the object is not in a usable state and should be discarded (calls to addListener will throw after the object is disposed).
override
find(T? data) → T?: 查找已选数据中与指定数据相同的数据
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
notifyDataChanged() → void: 手动触发数据变化通知
notifyListeners() → void: Call all the registered listeners.
inherited
remove(T data) → void: 移除指定的数据
removeListener(VoidCallback listener) → void: Remove a previously registered closure from the list of closures that are notified when the object changes.
inherited
removeWhere(bool test(T element)) → void: 根据条件移除已选数据，并通知刷新
toString() → String: A string representation of this object.
inherited
update(T data) → void: 更新已选中的数据项
updateAll(Iterable<T> data) → void: 更新所有已选的数据