42 lines
884 B
D
42 lines
884 B
D
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module command.remoteundostatus.ceilingfanlowcommand;
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import command.remoteundostatus.command;
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import command.remoteundostatus.ceilingfan;
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class CeilingFanLowCommand : Command
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{
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CeilingFan ceilingFan;
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int prevSpeed;
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this(CeilingFan ceilingFan)
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{
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this.ceilingFan = ceilingFan;
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}
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void execute()
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{
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prevSpeed = ceilingFan.getSpeed();
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ceilingFan.low();
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}
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void undo()
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{
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switch (prevSpeed)
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{
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case CeilingFan.HIGH:
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ceilingFan.high();
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break;
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case CeilingFan.MEDIUM:
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ceilingFan.medium();
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break;
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case CeilingFan.LOW:
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ceilingFan.low();
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break;
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case CeilingFan.OFF:
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ceilingFan.off();
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break;
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default: break;
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}
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}
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}
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