sjiu/DeviceManager.java

/**
 * 动态设备管理系统
 * 可以根据设备实现的接口自动识别和管理设备功能
 */
import java.util.ArrayList;
import java.util.List;

public class DeviceManager {
    private String name;
    private List<Device> devices;
    
    public DeviceManager(String name) {
        this.name = name;
        this.devices = new ArrayList<>();
    }
    
    /**
     * 添加设备到管理系统
     * @param device 要添加的设备
     */
    public void addDevice(Device device) {
        devices.add(device);
        System.out.println(name + " 已添加设备: " + device.getName());
    }
    
    /**
     * 移除设备
     * @param deviceName 设备名称
     * @return 是否移除成功
     */
    public boolean removeDevice(String deviceName) {
        for (Device device : devices) {
            if (device.getName().equals(deviceName)) {
                devices.remove(device);
                System.out.println(name + " 已移除设备: " + deviceName);
                return true;
            }
        }
        return false;
    }
    
    /**
     * 打开所有设备
     */
    public void turnOnAllDevices() {
        for (Device device : devices) {
            device.turnOn();
        }
    }
    
    /**
     * 关闭所有设备
     */
    public void turnOffAllDevices() {
        for (Device device : devices) {
            device.turnOff();
        }
    }
    
    /**
     * 列出所有设备及其功能
     */
    public void listAllDevices() {
        System.out.println("===== " + name + " 设备列表 =====");
        for (Device device : devices) {
            System.out.println("设备: " + device.getName() + " (状态: " + (device.isOn() ? "开启" : "关闭") + ")");
            System.out.print("  支持的功能: ");
            List<String> capabilities = new ArrayList<>();
            
            if (device instanceof TemperatureAdjustable) {
                capabilities.add("温度调节");
            }
            if (device instanceof BrightnessAdjustable) {
                capabilities.add("亮度调节");
            }
            if (device instanceof MediaPlayable) {
                capabilities.add("媒体播放");
            }
            if (device instanceof Timable) {
                capabilities.add("定时功能");
            }
            
            System.out.println(String.join(", ", capabilities));
        }
    }
    
    /**
     * 根据接口类型查找设备
     * @param interfaceType 接口类型
     * @return 实现该接口的设备列表
     */
    @SuppressWarnings("unchecked")
    public <T> List<T> findDevicesByInterface(Class<T> interfaceType) {
        List<T> result = new ArrayList<>();
        for (Device device : devices) {
            if (interfaceType.isInstance(device)) {
                result.add((T) device);
            }
        }
        return result;
    }
    
    /**
     * 批量设置温度调节设备的温度
     * @param temperature 目标温度
     */
    public void setTemperatureForAll(int temperature) {
        List<TemperatureAdjustable> tempDevices = findDevicesByInterface(TemperatureAdjustable.class);
        for (TemperatureAdjustable device : tempDevices) {
            if (device instanceof Device && ((Device)device).isOn()) {
                device.setTemperature(temperature);
            }
        }
    }
    
    /**
     * 批量设置亮度调节设备的亮度
     * @param brightness 目标亮度
     */
    public void setBrightnessForAll(int brightness) {
        List<BrightnessAdjustable> brightnessDevices = findDevicesByInterface(BrightnessAdjustable.class);
        for (BrightnessAdjustable device : brightnessDevices) {
            if (device instanceof Device && ((Device)device).isOn()) {
                device.setBrightness(brightness);
            }
        }
    }
}