Enum Event 

pub enum Event {
    Create(Arc<State>),
    TrApply {
        old_state: Arc<State>,
        new_state: Arc<State>,
        transactions: Vec<Arc<Transaction>>,
    },
    Undo {
        old_state: Arc<State>,
        new_state: Arc<State>,
        transactions: Vec<Arc<Transaction>>,
    },
    Redo {
        old_state: Arc<State>,
        new_state: Arc<State>,
        transactions: Vec<Arc<Transaction>>,
    },
    Jump {
        old_state: Arc<State>,
        new_state: Arc<State>,
        transactions: Vec<Arc<Transaction>>,
        steps: isize,
    },
    TrFailed {
        state: Arc<State>,
        transaction: Transaction,
        error: String,
    },
    HistoryCleared,
    Destroy,
    Stop,
}

Variants

Create(Arc<State>)

状态创建事件

TrApply

事务应用事件 (old_state, new_state, transactions) 统一使用新旧状态模式，与 Undo/Redo 保持一致

Fields

old_state: Arc<State>

new_state: Arc<State>

transactions: Vec<Arc<Transaction>>

Undo

撤销事件 (old_state, new_state, undone_transactions) 包含被撤销的事务列表，供其他组件（如搜索索引）使用

Fields

old_state: Arc<State>

new_state: Arc<State>

transactions: Vec<Arc<Transaction>>

Redo

重做事件 (old_state, new_state, redone_transactions) 包含重做的事务列表，供其他组件（如搜索索引）使用

Fields

old_state: Arc<State>

new_state: Arc<State>

transactions: Vec<Arc<Transaction>>

Jump

历史跳转事件 (old_state, new_state, transactions, steps) 当用户跳转到历史中的特定位置时触发 transactions 包含跳转过程中所有被影响的事务

Fields

old_state: Arc<State>

new_state: Arc<State>

transactions: Vec<Arc<Transaction>>

steps: isize

TrFailed

事务失败事件 当事务应用失败时触发，供错误处理和日志记录使用

Fields

state: Arc<State>

transaction: Transaction

error: String

HistoryCleared

历史清空事件 当历史记录被清空时触发

Destroy

销毁事件

Stop

停止事件（需要重启）

Implementations

impl Event

pub fn name(&self) -> &'static str

Trait Implementations

impl Clone for Event

fn clone(&self) -> Event

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Event

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.