cardmanagermodel.java

java绘图 java awt 经典绘图的例子,对于初学awt模块的人非常有帮助.

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package cardmanager;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.DefaultListModel;

/**
 *
 * @author zhaolin
 */
public class CardManagerModel {
    //两种状态(新名片和查看名片)
    public static final int NEW_CARDS = 0;
    public static final int VIEW_CARDS = 1;
    
    //两种附加信息状态(爱好和学历)
    public static final int FAVOR = 0;
    public static final int DEGREE = 1;
    
    //单态模式共享对象
    private static CardManagerModel model;
    //列表模型
    private DefaultListModel listModel;
    //序列化存储文件
    private String cardsFile;
    //当前的状态
    private int status;
    //附加信息状态
    private int attachmentStatus;
    //当前显示的卡片
    private Card currentCard;

    public String getCardsFile() {
        return cardsFile;
    }

    public void setCardsFile(String cardsFile) {
        this.cardsFile = cardsFile;
    }

    public Card getCurrentCard() {
        return currentCard;
    }

    public void setCurrentCard(Card currentCard) {
        this.currentCard = currentCard;
    }

    public int getStatus() {
        return status;
    }

    public void setStatus(int status) {
        this.status = status;
    }

    public static CardManagerModel getInstance() {
        if (model == null) {
            model = new CardManagerModel();
        }
        return model;
    }

    private CardManagerModel() {
        listModel = new DefaultListModel();
        cardsFile = "cards.obj";
        currentCard = new Card();
        loadSavedCards();
    }

    public DefaultListModel getListModel() {
        return listModel;
    }

    public void setListModel(DefaultListModel listModel) {
        this.listModel = listModel;
    }

    /**
     * 添加新名片
     * @param card 新名片
     */
    public void appendNewCard(Card card) {
        listModel.addElement(card);
        saveCards();
    }

    /**
     * 加载名片信息
     */
    private void loadSavedCards() {
        ObjectInputStream ois = null;
        try {
            File file = new File(cardsFile);
            if(!file.exists()){
                return;
            }
            ois = new ObjectInputStream(new FileInputStream(file));
            Object [] cards = (Object [])ois.readObject();
            listModel.clear();
            for (int i = 0; i < cards.length; i++) {
                Object object = cards[i];
                listModel.addElement(object);
            }
        } catch (ClassNotFoundException ex) {
            Logger.getLogger(CardManagerModel.class.getName()).log(Level.SEVERE, null, ex);
        } catch (FileNotFoundException ex) {
            Logger.getLogger(CardManagerModel.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            Logger.getLogger(CardManagerModel.class.getName()).log(Level.SEVERE, null, ex);
        } finally {
            try {
                if(ois!=null)
                    ois.close();
            } catch (IOException ex) {
                Logger.getLogger(CardManagerModel.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
    }

    /**
     * 持久存储名片信息
     */
    private void saveCards() {
        ObjectOutputStream oos = null;
        try {
            File file = new File(cardsFile);
            if(!file.exists()){
                file.createNewFile();
            }
            oos = new ObjectOutputStream(new FileOutputStream(file));
            Object [] cards = new Object[listModel.getSize()];
            listModel.copyInto(cards);
            oos.writeObject(cards);
        } catch (FileNotFoundException ex) {
            Logger.getLogger(CardManagerModel.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            Logger.getLogger(CardManagerModel.class.getName()).log(Level.SEVERE, null, ex);
        } finally {
            try {
                if(oos!=null)
                oos.close();
            } catch (IOException ex) {
                Logger.getLogger(CardManagerModel.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
    }

    public int getAttachmentStatus() {
        return attachmentStatus;
    }

    public void setAttachmentStatus(int attachmentStatus) {
        this.attachmentStatus = attachmentStatus;
    }
    
    
}