RemoteControl.java

package CommandPattern.LambdaRemote;

public class RemoteControl {
    Command[] onCommands;
    Command[] offCommands;
    Command undoCommand;

    public RemoteControl(){
        // create an command array with 7 slots
        onCommands = new Command[7];
        offCommands = new Command[7];

        // Set all commands to No Command because the remote hasn't been programmed yet
        for (int i=0; i<7;i++){
            onCommands[i] = () -> {};
            offCommands[i] = () -> {};
        }
    }

    public void setCommand(int slot, Command onCommand, Command offCommand){
        onCommands[slot] = onCommand;
        offCommands[slot] = offCommand;
    }

    public void onButtonWasPushed(int slot){
        onCommands[slot].execute();
    }

    public void offButtonWasPushed(int slot){
        offCommands[slot].execute();
    }

    public String toString(){
        StringBuffer stringBuff = new StringBuffer();
        stringBuff.append("\n--------Remote Control ---------\n");
        for (int i=0; i< onCommands.length; i++){
            stringBuff.append("\nSlot " + i + ": " + onCommands[i].getClass().getName() + "    " + offCommands[i].getClass().getName());
        }
        return stringBuff.toString();
    }
}