Manually resizeing a com.jidesoft.combobox.PopupPanel

[td84]

Hello,

for some times ago i applied a code snippet to remove the cancel button from a CheckBoxListComboBox instance:
viewtopic.php?f=18&t=16394&p=80685&hilit=cancel+button&sid=70eaef581a5b6faef918b4201932a781#p80685
It worked good. The only problem it appears, if i try to set the width of the popuppanel, sometimes the popuppanel is right aligned, and somtimes left aligned.
I use this code, to set the size:
public class MyClass extends CheckBoxListComboBox {

@Override public void popupMenuWillBecomeVisible(PopupMenuEvent pme) {
isvisible = true;
//set the size of the popuppanel
if(this._popupPanel.getPreferredSize().width < 150) {
this._popupPanel.setPreferredSize( new Dimension(150, this._popupPanel.getSize().height) );
}
}

}

Left/Right aligned: the position of the popuppanel relative to the dropdown menu.
It seems, the popuppanel get's left aligned if there is a long text.
The right aligned popup contains only short texts.

Can you help to turn the right alignment into a left alignment?

Thank you,
Daniel

[JIDE Support]

Sorry for the late reply. The forum email notification is broken after we moved our server. It is fixed now.

Could you please send me a test case so that I can have the complete code to reproduce the issue?

[td84]

Welcome back
Here is the code (and the image) to reproduce it.
Meanwhile i found another way to change the size of the popuppanel: i create a backup from the OK-Button, remove the Cancel-Button, and then readd the Ok, and an empty JPanel to the Buttonpanel and replace the layoutmanager of the Buttonpanel with a FlowLayoutmanager. So to resize the popuppanel, i change the size of the JPanel. (To do this uncomment the parts BLOCK1 and BLOCK2)
It's not so elegant , but the problem with the alignment disappears.

Code: Select all

//class MyList
package checkboxlist;

import java.awt.Component;
import java.awt.ComponentOrientation;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.KeyEventDispatcher;
import java.awt.KeyboardFocusManager;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyEvent;
import javax.swing.ComboBoxModel;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.Timer;
import javax.swing.border.EmptyBorder;
import javax.swing.event.PopupMenuEvent;
import java.awt.*;

import com.jidesoft.combobox.CheckBoxListChooserPanel;
import com.jidesoft.combobox.CheckBoxListComboBox;
import com.jidesoft.combobox.MultiSelectListChooserPanel;
import com.jidesoft.converter.ConverterContext;



public class MyList extends CheckBoxListComboBox {
   private String[] _content;
   private boolean isvisible;
   private KeyboardFocusManager manager;
   
   
   public MyList(String[] content) {
      super(content, String[].class);
      _content = content;
      isvisible = false;
      
      
      setupShortcuts();
   }
   
   
   @Override protected MultiSelectListChooserPanel createListChooserPanel(ComboBoxModel dataModel, Class<?> clazz, ConverterContext converterContext) {
        return new CheckBoxListChooserPanel(dataModel, clazz, converterContext, getDialogOKAction(), getDialogCancelAction()) {
           @Override public Component createButtonPanel(int alignment) {
                Component buttonPanel = super.createButtonPanel(alignment);
                Component okbtn = null;
            
                for (Component comp: Main.getAllComponents((Container) buttonPanel)) {
                  if(comp.getClass() == JButton.class  &&  ((JButton)comp).getActionCommand().equalsIgnoreCase("cancel")) {
                     ((Container)buttonPanel).remove(comp);
                  }
               /*BLOCK1  if(comp.getClass() == JButton.class  &&  ((JButton)comp).getActionCommand().equalsIgnoreCase("ok")) {
                     ((Container)buttonPanel).remove(comp);
                     okbtn = comp;
                  }*/
                }
            
               //Change the size of the popuppanel:
               //1) create an empty panel as placeholder
               /*BLOCK2  JPanel empty = new JPanel();
               empty.setBorder(new EmptyBorder(1, 70, 0, 0));
               empty.setBackground(getBackground());
               
               //2) set a new layoutmanager
               FlowLayout myLayout = new FlowLayout();
               myLayout.setAlignment(FlowLayout.RIGHT);
               ((Container)buttonPanel).setLayout(myLayout);
               ((Container)buttonPanel).setComponentOrientation(ComponentOrientation.LEFT_TO_RIGHT);
               
               //3) readd the button + panel to the container + resize the button
               ((Container)buttonPanel).add(empty);
               ((Container)buttonPanel).add(okbtn);
               okbtn.setPreferredSize( new Dimension(okbtn.getPreferredSize().width + 30, okbtn.getPreferredSize().height) );*/
               
                return buttonPanel;
            }
        };
    }
   
   
   protected void setupShortcuts() {
      manager = KeyboardFocusManager.getCurrentKeyboardFocusManager();
        manager.addKeyEventDispatcher( new KeyEventDispatcher() {
            @Override public boolean dispatchKeyEvent(KeyEvent e) {
                if (isvisible == true  &&  ((e.getModifiers() & KeyEvent.CTRL_MASK) != 0)  &&
                   e.getID() == KeyEvent.KEY_RELEASED  &&  e.getKeyCode() == KeyEvent.VK_A) {
                   setSelectedObjects(_content);
                }
                return false;
            }
        });
   }
   
   
   @Override public void popupMenuWillBecomeInvisible(PopupMenuEvent pme) {
      isvisible = false;
   }
   
   
   @Override public void popupMenuWillBecomeVisible(PopupMenuEvent pme) {
      isvisible = true;
      if(this._popupPanel.getPreferredSize().width < 150) {
         this._popupPanel.setPreferredSize( new Dimension(150, this._popupPanel.getSize().height) );
      }
   }
   
}


Code: Select all

//class Main
package checkboxlist;

import java.awt.FlowLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import java.awt.*;
import java.util.*;


public class Main extends JFrame {
   public static void main(String s[]) {
      JFrame frame = new JFrame("JFrame Example");
      JPanel panel = new JPanel();
      panel.setLayout(new FlowLayout());
      JLabel label = new JLabel("The list: ");
      MyList lst = new MyList(new String[]{"first", "second", "third", "fourth"});
      panel.add(label);
      panel.add(lst);
      frame.add(panel);
      frame.setSize(300, 300);
      frame.setLocationRelativeTo(null);
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frame.setVisible(true);
   }
   
   public static ArrayList<Component> getAllComponents(final Container c) {
        Component[] comps = c.getComponents();
        ArrayList<Component> compList = new ArrayList<Component>();
        for (Component comp : comps) {
          compList.add(comp);
          if (comp instanceof Container) {
            compList.addAll((Collection<? extends Component>) getAllComponents((Container) comp));
          }
        }
        return compList;
    }
}


[JIDE Support]

I ran your test case by commenting out both BLOCK1 and 2. The comboBox popup shows up as right aligned.

[td84]

I ran your test case by commenting out both BLOCK1 and 2. The comboBox popup shows up as right aligned.

That's mysterious. I'm using Java 1.7, Windows 7, Jide3.6.12. Below is, what i get by enabling / disabling BLOCK1/2.
Maybe the Java version causes this problem...

[JIDE Support]

You are right. They are indeed different.