BlogJava-HelloWorld 善战者,求之于势,不责于人;故能择人而任势。-随笔分类-java - swing

java 自带风格

helloworld2008 — Wed, 21 Jul 2010 02:42:00 GMT

helloworld2008 2010-07-21 10:42 发表评论

Swing--编辑器1

helloworld2008 — Wed, 05 Mar 2008 14:25:00 GMT

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Hashtable;
import java.util.Map;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JToolBar;
import javax.swing.text.DefaultEditorKit;
import javax.swing.text.JTextComponent;

public class EditPlus extends JFrame {
    private Action openAction;
    private Action saveAction;
    private Action closeAction;

    private JTextComponent textComp;
    private Map actionMap = new Hashtable();

    public EditPlus() {
        super("EditPlus学习");
        textComp = createTextCompoent();
        this.setSize(400, 300);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        initActionProperty();
        Container c = this.getContentPane();
        c.add(new JScrollPane(textComp), BorderLayout.CENTER);
        c.add(createToolBar(), BorderLayout.NORTH);
        this.setJMenuBar(createMenuBar());

    }

    protected JTextComponent createTextCompoent() {
        JTextArea a = new JTextArea();
        a.setLineWrap(true);
        return a;
    }

    // 初始化Action的一些信息,如图标等
    protected void initActionProperty() {
        Action a = null;
        a = textComp.getActionMap().get(DefaultEditorKit.cutAction);
        a.putValue(Action.SMALL_ICON, new ImageIcon("icons/cut.gif"));
        a.putValue(Action.NAME, "剪切");

        a = textComp.getActionMap().get(DefaultEditorKit.copyAction);
        a.putValue(Action.SMALL_ICON, new ImageIcon("icons/copy.gif"));
        a.putValue(Action.NAME, "复制");

        a = textComp.getActionMap().get(DefaultEditorKit.pasteAction);
        a.putValue(Action.SMALL_ICON, new ImageIcon("icons/paste.gif"));
        a.putValue(Action.NAME, "粘贴");

        a = textComp.getActionMap().get(DefaultEditorKit.selectAllAction);
        a.putValue(Action.NAME, "全部选定");
    }

    // 创建ToolBar
    protected JToolBar createToolBar() {
        JToolBar bar = new JToolBar();
        bar.add(getOpenAction()).setText("");
        bar.add(getSaveAction()).setText("");
        bar.addSeparator();

        JButton cutBtn = bar.add(textComp.getActionMap().get(DefaultEditorKit.cutAction));
        JButton copyBtn = bar.add(textComp.getActionMap().get(DefaultEditorKit.copyAction));
        JButton pasterBtn = bar.add(textComp.getActionMap().get(DefaultEditorKit.pasteAction));
        cutBtn.setText("");
        copyBtn.setText("");
        pasterBtn.setText("");
        return bar;
    }

    // 创建MenuBar
    protected JMenuBar createMenuBar() {
        JMenuBar bar = new JMenuBar();
        JMenu file = new JMenu("文件");
        JMenu edit = new JMenu("编辑");
        bar.add(file);
        bar.add(edit);

        file.add(getOpenAction());
        file.add(getSaveAction());
        file.add(getCloseAction());

        edit.add(textComp.getActionMap().get(DefaultEditorKit.cutAction));
        edit.add(textComp.getActionMap().get(DefaultEditorKit.copyAction));
        edit.add(textComp.getActionMap().get(DefaultEditorKit.pasteAction));
        edit.add(textComp.getActionMap().get(DefaultEditorKit.selectAllAction));
        return bar;
    }

    protected Action getOpenAction() {
        if (openAction == null)
            openAction = new OpenAction();
        return openAction;
    }

    protected Action getSaveAction() {
        if (saveAction == null)
            saveAction = new SaveAction();
        return saveAction;
    }

    protected Action getCloseAction() {
        if (closeAction == null)
            closeAction = new CloseAction();
        return closeAction;
    }

    protected JTextComponent getTextComponent() {
        return textComp;
    }

    public class OpenAction extends AbstractAction {
        public OpenAction() {
            super("打开", new ImageIcon("icons/open.gif"));
        }
        public void actionPerformed(ActionEvent e) {
            JFileChooser fc = new JFileChooser();
            if (fc.showOpenDialog(EditPlus.this) != JFileChooser.APPROVE_OPTION)
                return;
            File f = fc.getSelectedFile();
            if (f == null)
                return;
            FileReader fr = null;
            try {
                fr = new FileReader(f);
                textComp.read(fr, null);
            } catch (Exception ee) {
                showWarnDialog("读文件异常!",ee.toString());
            } finally {
                if (fr != null) {
                    try {
                        fr.close();
                    } catch (IOException e1) {
                        e1.printStackTrace();
                    }
                }
            }
        }
    }

    public class SaveAction extends AbstractAction {
        public SaveAction() {
            super("保存", new ImageIcon("icons/save.gif"));
        }

        public void actionPerformed(ActionEvent e) {
            JFileChooser fc = new JFileChooser();
            if (fc.showSaveDialog(EditPlus.this) != JFileChooser.APPROVE_OPTION)
                return;
            File f = fc.getSelectedFile();
            if (f == null)
                return;

            FileWriter fw = null;
            try {
                fw = new FileWriter(f);
                textComp.write(fw);
            } catch (Exception ee) {
                showWarnDialog("保存文件异常!",ee.toString());
            } finally {
                try {
                    if (fw != null)
                        fw.close();
                } catch (IOException eee) {
                    eee.printStackTrace();
                }
            }
        }
    }

    public class CloseAction extends AbstractAction {
        public CloseAction() {
            super("关闭");
        }
        @Override
        public void actionPerformed(ActionEvent e) {
            System.exit(0);
        }
    }

    public void showWarnDialog(String msg, String warn) {
        JPanel p = new JPanel();
        JLabel label = new JLabel(msg);
        label.setFont(label.getFont().deriveFont(Font.BOLD));
        JTextArea area = new JTextArea(warn);
        area.setOpaque(false);
        area.setLineWrap(true);
        area.setPreferredSize(new Dimension(280, 100));
        p.setLayout(new BorderLayout());
        p.add(new JLabel(" "), BorderLayout.CENTER);
        p.add(label, BorderLayout.NORTH);
        p.add(new JScrollPane(area), BorderLayout.SOUTH);
        JOptionPane.showMessageDialog(EditPlus.this, p, "异常信息",
                JOptionPane.WARNING_MESSAGE);

    }

    public static void main(String args[]) {
        Utils.setLookAndFeel();
        EditPlus ep = new EditPlus();
        ep.setVisible(true);
    }
}

helloworld2008 2008-03-05 22:25 发表评论

Java Swing 学习笔记(1) -- JTable

helloworld2008 — Fri, 29 Feb 2008 08:32:00 GMT

这个例子是JTable可以选择行和列，界面如图

代码如下

import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableModel;

public class A7_SelectionModel extends JFrame {
    public A7_SelectionModel() {
        super("Selection Model Test");
        setSize(450, 350);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        TableModel m = new AbstractTableModel() {
            public int getColumnCount() {
                return 10;
            }

            public int getRowCount() {
                return 10;
            }

            public Object getValueAt(int r, int c) {
                return "" + (r+1)*(c+1);
            }
        };

        final JTable jt = new JTable(m);

        this.getContentPane().add(new JScrollPane(jt), BorderLayout.CENTER);

        JPanel controlPanel, buttonPanel, columnPanel, rowPanel;

        buttonPanel = new JPanel();
        final JCheckBox cellBox, columnBox, rowBox;
        cellBox = new JCheckBox("Cells", jt.getCellSelectionEnabled());
        columnBox = new JCheckBox("Columns", jt.getColumnSelectionAllowed());
        rowBox = new JCheckBox("Rows", jt.getRowSelectionAllowed());

        cellBox.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                jt.setCellSelectionEnabled(cellBox.isSelected());
                columnBox.setSelected(jt.getColumnSelectionAllowed());
                rowBox.setSelected(jt.getRowSelectionAllowed());
            }
        });
        columnBox.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                jt.setColumnSelectionAllowed(columnBox.isSelected());
                cellBox.setSelected(jt.getCellSelectionEnabled());
            }
        });
        rowBox.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                jt.setRowSelectionAllowed(rowBox.isSelected());
                cellBox.setSelected(jt.getCellSelectionEnabled());
            }
        });

        buttonPanel.add(new JLabel("Selections allowed:"));
        buttonPanel.add(cellBox);
        buttonPanel.add(columnBox);
        buttonPanel.add(rowBox);

        columnPanel = new JPanel();
        ListSelectionModel csm = jt.getColumnModel().getSelectionModel();
        JLabel columnCounter = new JLabel("(Selected Column INdices Go Here)");
        csm.addListSelectionListener(new SelectionDebugger(columnCounter, csm));
        columnPanel.add(new JLabel("Selected columns:"));
        columnPanel.add(columnCounter);

        rowPanel = new JPanel();
        ListSelectionModel rsm = jt.getColumnModel().getSelectionModel();
        JLabel rowCounter = new JLabel("(Selected Row INdices Go Here)");
        rsm.addListSelectionListener(new SelectionDebugger(columnCounter, csm));
        rowPanel.add(new JLabel("Selected Rows:"));
        rowPanel.add(rowCounter);

        controlPanel = new JPanel(new GridLayout(0, 1));
        controlPanel.add(buttonPanel);
        controlPanel.add(columnPanel);
        controlPanel.add(rowPanel);

        this.getContentPane().add(controlPanel, BorderLayout.SOUTH);

    }
    class SelectionDebugger implements ListSelectionListener  {
        JLabel debugger;
        ListSelectionModel model;
        public SelectionDebugger(JLabel l, ListSelectionModel m) {
            this.debugger = l;
            this.model = m;
        }
        public void valueChanged(ListSelectionEvent e) {
            if (!e.getValueIsAdjusting()) {
                StringBuffer buf = new StringBuffer();
                int[] selecton = getSelectonIndices(model.getMinSelectionIndex(),
                        model.getMaxSelectionIndex());
                if (selecton.length == 0) {
                    buf.append("NONE");
                } else {
                    for (int i = 0; i < selecton.length - 1; i++) {
                        buf.append(selecton[i]);
                        buf.append(",");
                    }
                    buf.append(selecton[selecton.length - 1]);
                }
                debugger.setText(buf.toString());
            }
        }

        protected int[] getSelectonIndices(int start, int stop) {
            if ((start == -1) || (stop == -1)) {
                return new int[0];
            }

            int guesses[] = new int[stop - start + 1];
            int index = 0;
            for (int i = start; i <= stop; i++) {
                if (model.isSelectedIndex(i)) {
                    guesses[index++] = i;
                }
            }
            int realthing[] = new int[index];
            System.arraycopy(guesses, 0, realthing, 0, index);
            return realthing;
        }


    }
    public static void main(String args[]) {
        AbmUtils.setLookAndFeel();
        A7_SelectionModel s = new A7_SelectionModel();
        s.setVisible(true);
    }
}

helloworld2008 2008-02-29 16:32 发表评论