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- /*
- * *********************************************************************************************************************
- *
- * !!
- * .F88X
- * X8888Y
- * .}888888N;
- * i888888N; .:! .I$WI:
- * R888888I .'N88~ i8}+8Y&8"l8i$8>8W~'>W8}8]KW+8IIN"8&
- * .R888888I .;N8888~ .X8' "8I.!,/8" !%NY8`"8I8~~8>,88I
- * +888888N; .8888888Y "&&8Y.}8,
- * ./888888N; .R888888Y .'}~ .>}'.`+> i}! "i' +/' .'i~ !11,.:">, .~]! .i}i
- * ~888888%: .I888888l .]88~`1/iY88Ii+1'.R$8$8]"888888888> Y8$ W8E X8E W8888'188Il}Y88$*
- * 18888888 E8888881 .]W%8$`R8X'&8%++N8i,8N%N8+l8%` .}8N:.R$RE%N88N%N$K$R 188,FE$8%~Y88I
- * .E888888I .i8888888' .:$8I;88+`E8R:/8N,.>881.`$8E/1/]N8X.Y8N`"KF&&FK!'88*."88K./$88%RN888+~
- * 8888888I .,N888888~ ~88i"8W,!N8*.I88.}888%F,i$88"F88" 888:E8X.>88!i88>`888*.}Fl1]*}1YKi'
- * i888888N' I888Y ]88;/EX*IFKFK88X K8R .l8W 88Y ~88}'88E&%8W.X8N``]88!.$8K .:W8I
- * .i888888N; I8Y .&8$ .X88! i881.:%888>I88 ;88] +88+.';;;;:.Y88X 18N.,88l .+88/
- * .:R888888I
- * .&888888I Copyright (c) 2009-2020. 博锐尚格科技股份有限公司
- * ~8888'
- * .!88~ All rights reserved.
- *
- * *********************************************************************************************************************
- */
- /**
- * Undo命令
- *
- * @author 庞利祥 <sybotan@126.com>
- */
- export abstract class SUndoCommand {
- /** 命令名称 */
- abstract get command(): string;
- /** 命令描述 */
- desc: string = "undefined";
- /**
- * 构造函数
- *
- * @param parent 指向父命令
- */
- protected constructor(parent: SUndoCommand | null = null) {}
- /**
- * undo回调
- */
- abstract undo(): void;
- /**
- * redo回调
- */
- abstract redo(): void;
- /**
- * 合并命令
- *
- * @param command 合并的命令
- * @return 成功能返回true,否则返回false
- */
- mergeWith(command: SUndoCommand): boolean {
- return false;
- }
- /**
- * 命令 ID 。如果命令不能合并,则返回 -1 。如果支持合并则返回一个正整数。
- */
- id(): number {
- return -1;
- }
- /**
- * 命令转为描述谢姐
- */
- toString(): string {
- return "";
- }
- }
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