Добрый день. На java программирую совсем недавно, стокнулся с проблемой: Если в созданном окне нажать мышью на полосе прокрутки в treeview, то меню начинает открываться под treeview. если нажать на любой элемент дерева (папку, лист), то меню начинает отображаться нормально. Может кто сталкивался с подобным, как исправить поведение? | Код |
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.ScrollPane;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.File;
import java.util.prefs.Preferences;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.JToolBar;
import javax.swing.JTree;
import javax.swing.LookAndFeel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.plaf.ButtonUI;
import javax.swing.plaf.ComboBoxUI;
import javax.swing.plaf.MenuBarUI;
import javax.swing.plaf.MenuItemUI;
import javax.swing.plaf.ToolBarUI;
import javax.swing.plaf.TreeUI;
import javax.swing.tree.DefaultMutableTreeNode;
public class test extends WindowAdapter {
public static void main(String[] args){
new test().Show();
}
public static final String hiddenKey="-h";
public static boolean hiddenKeyActivated=false;
private JFrame mw;
private JButton btAdd=new JButton("Create");
private JButton btCreate=new JButton("Create");
private JButton btDelete=new JButton("Delete");
private JButton btUp=new JButton("Up");
private JButton btDown=new JButton("Down");
//private JButton btSaveItem=new JButton("Save Item");
private JMenuItem jmOpenJSONOptions=new JMenuItem("Open Options");
private JMenuItem jmOpen1=new JMenuItem("Import JSON...");
private JMenuItem jmOpen2=new JMenuItem("Open...");
private JMenuItem jmSave1=new JMenuItem("Export JSON...");
private JMenuItem jmSave3=new JMenuItem("Save as...");
private JMenuItem jmSave22=new JMenuItem("Save...");
private JMenuItem jmExit=new JMenuItem("Exit");
private DefaultMutableTreeNode nActionsHead=new DefaultMutableTreeNode("Scheduler");
private JTree jt=new JTree(nActionsHead);
private JComboBox selType=new JComboBox(new String[]{"Action","Option"});
private JTextField txtType=new JTextField("0x0");
public static boolean changed=false;
public static test UI=null;
private JPanel editorPanel=new JPanel();
private JToolBar toolbar=new JToolBar() ;
private JPanel top=new JPanel();
Preferences s=Preferences.userRoot();
public Class<?> WindowsButtonUI=null;
public Class<?> WindowsComboBoxUI=null;
public Class<?> WindowsLookAndFeel=null;
public Class<?> WindowsMenuBarUI=null;
public Class<?> WindowsMenuItemUI=null;
public Class<?> WindowsToolBarUI=null;
public Class<?> WindowsTreeUI=null;
public void Show(){
try {
WindowsButtonUI=Class.forName("com.sun.java.swing.plaf.windows.WindowsButtonUI");
WindowsComboBoxUI=Class.forName("com.sun.java.swing.plaf.windows.WindowsComboBoxUI");
WindowsLookAndFeel=Class.forName("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
WindowsMenuBarUI=Class.forName("com.sun.java.swing.plaf.windows.WindowsMenuBarUI");
WindowsMenuItemUI=Class.forName("com.sun.java.swing.plaf.windows.WindowsMenuItemUI");
WindowsToolBarUI=Class.forName("com.sun.java.swing.plaf.windows.WindowsToolBarUI");
WindowsTreeUI=Class.forName("com.sun.java.swing.plaf.windows.WindowsTreeUI");
UIManager.setLookAndFeel((LookAndFeel) WindowsLookAndFeel.newInstance());
} catch (UnsupportedLookAndFeelException e) {
} catch (ClassNotFoundException e) {
} catch (InstantiationException e) {
} catch (IllegalAccessException e) {
}
btDelete.setEnabled(false);
btUp.setEnabled(false);
btDown.setEnabled(false);
btAdd.setEnabled(false);
jmOpen1.setEnabled(false);
jmOpen2.setEnabled(false);
jmSave1.setEnabled(false);
jmSave3.setEnabled(false);
selType.setEditable(true);
//main menu
JMenuBar mb=new JMenuBar();
JMenu pm=new JMenu("File");
pm.add(jmOpen2);
pm.add(jmSave22);
pm.add(jmSave3);
pm.addSeparator();
pm.add(jmOpen1);
pm.add(jmSave1);
pm.addSeparator();
pm.add(jmOpenJSONOptions);
pm.addSeparator();
pm.add(jmExit);
mb.add(pm);
mw=new JFrame();
ScrollPane sp=new ScrollPane();
sp.add(jt);
sp.setBounds(0, 0, 300, 400);
top.setLayout(new BorderLayout());
top.add(sp,BorderLayout.WEST);
toolbar.add(btAdd);
toolbar.add(btDelete);
top.add(toolbar,BorderLayout.NORTH);
selType.setVisible(false);
txtType.setVisible(false);
btCreate.setVisible(false);
top.add(editorPanel,BorderLayout.CENTER);
mw.add(top,BorderLayout.CENTER);
mw.setJMenuBar(mb);
//register listeners
mw.addWindowListener(this);
//show
mw.setBounds(0, 0, 800, 400);
mw.setMaximumSize(new Dimension(900,600));
mw.setResizable(false);
mw.setVisible(true);
mw.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
System.setErr(null);
System.setOut(null);
try{
mb.setUI((MenuBarUI) WindowsMenuBarUI.newInstance());
jt.setUI((TreeUI) WindowsTreeUI.newInstance());
//jt.setBorder(new EmptyBorder(0, 0, 0, 0));
toolbar.setUI((ToolBarUI) WindowsToolBarUI.newInstance());
jmOpenJSONOptions.setUI((MenuItemUI) WindowsMenuItemUI.newInstance());
jmOpen1.setUI((MenuItemUI) WindowsMenuItemUI.newInstance());
jmOpen2.setUI((MenuItemUI) WindowsMenuItemUI.newInstance());
jmSave1.setUI((MenuItemUI) WindowsMenuItemUI.newInstance());
jmSave22.setUI((MenuItemUI) WindowsMenuItemUI.newInstance());
jmSave3.setUI((MenuItemUI) WindowsMenuItemUI.newInstance());
jmExit.setUI((MenuItemUI) WindowsMenuItemUI.newInstance());
selType.setUI((ComboBoxUI) WindowsComboBoxUI.newInstance());
btCreate.setUI((ButtonUI) WindowsButtonUI.newInstance());
}catch(Exception e){
}
test.UI=this;
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
nActionsHead.add(new DefaultMutableTreeNode("1"));
}
@Override
public void windowClosing(WindowEvent ev){
if(changed==false){
System.exit(0);
}else{
if(JOptionPane.showConfirmDialog(mw, "There is unsaved data. Are you sure you want to exit?", "", JOptionPane.YES_NO_OPTION)==JOptionPane.NO_OPTION){
}else{
System.exit(0);
}
}
}
}
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Меню отображается под treeview 
Загрузка ...
