[Add] Event 为 Cancelable 添加 'cancel()' 方法;

[Add] Cancelable 添加 'cancel()' 方法以触发取消操作;
This commit is contained in:
LamGC 2020-11-05 00:59:03 +08:00
parent 2875426f72
commit 79c12a8799
Signed by: LamGC
GPG Key ID: 6C5AE2A913941E1D

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@ -27,6 +27,12 @@ import java.util.Observer;
*/
public interface Cancelable {
/**
* 取消该事件.
* <p> 该操作不可取消.
*/
void cancel();
/**
* 检查事件是否已被取消.
* @return 如果事件已被取消, 返回 true.