S283 Planetary Science &n…he Search for Life DVD 2/DVD-ROM.iso/install/jre1_3/lib/rt.jar/javax/swing/plaf/basic/BasicComboPopup.class

Java Class File | 1979-12-31 | 12.3 KB | 423 lines

package javax.swing.plaf.basic;

import java.awt.AWTEvent;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.event.InputEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.beans.PropertyChangeListener;
import java.util.EventObject;
import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.ComboBoxModel;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JList;
import javax.swing.JPopupMenu;
import javax.swing.JScrollPane;
import javax.swing.KeyStroke;
import javax.swing.ListCellRenderer;
import javax.swing.ListModel;
import javax.swing.MenuElement;
import javax.swing.MenuSelectionManager;
import javax.swing.SwingUtilities;
import javax.swing.Timer;
import javax.swing.UIManager;
import javax.swing.border.Border;
import javax.swing.event.ListDataListener;
import javax.swing.event.ListSelectionListener;

public class BasicComboPopup extends JPopupMenu implements ComboPopup {
   static final ListModel EmptyListModel = new 1();
   protected JComboBox comboBox;
   protected JList list;
   protected JScrollPane scroller;
   protected boolean valueIsAdjusting = false;
   protected MouseMotionListener mouseMotionListener;
   protected MouseListener mouseListener;
   protected KeyListener keyListener;
   protected ListSelectionListener listSelectionListener;
   protected ListDataListener listDataListener;
   protected MouseListener listMouseListener;
   protected MouseMotionListener listMouseMotionListener;
   protected PropertyChangeListener propertyChangeListener;
   protected ItemListener itemListener;
   protected Timer autoscrollTimer;
   protected boolean hasEntered = false;
   protected boolean isAutoScrolling = false;
   protected int scrollDirection = 0;
   protected static final int SCROLL_UP = 0;
   protected static final int SCROLL_DOWN = 1;
   private boolean lightNav = false;
   private static final String LIGHTWEIGHT_KEYBOARD_NAVIGATION = "JComboBox.lightweightKeyboardNavigation";
   private static final String LIGHTWEIGHT_KEYBOARD_NAVIGATION_ON = "Lightweight";
   private static final String LIGHTWEIGHT_KEYBOARD_NAVIGATION_OFF = "Heavyweight";

   public void show() {
      Dimension var1 = this.comboBox.getSize();
      var1.setSize(var1.width, this.getPopupHeightForRowCount(this.comboBox.getMaximumRowCount()));
      Rectangle var2 = this.computePopupBounds(0, this.comboBox.getBounds().height, var1.width, var1.height);
      this.scroller.setMaximumSize(var2.getSize());
      this.scroller.setPreferredSize(var2.getSize());
      this.scroller.setMinimumSize(var2.getSize());
      this.list.invalidate();
      this.syncListSelectionWithComboBoxSelection();
      this.list.ensureIndexIsVisible(this.list.getSelectedIndex());
      ((JPopupMenu)this).setLightWeightPopupEnabled(this.comboBox.isLightWeightPopupEnabled());
      ((JPopupMenu)this).show(this.comboBox, var2.x, var2.y);
   }

   public void hide() {
      MenuSelectionManager var1 = MenuSelectionManager.defaultManager();
      MenuElement[] var2 = var1.getSelectedPath();

      for(int var3 = 0; var3 < var2.length; ++var3) {
         if (var2[var3] == this) {
            var1.clearSelectedPath();
            break;
         }
      }

      this.comboBox.repaint();
   }

   public JList getList() {
      return this.list;
   }

   public MouseListener getMouseListener() {
      return this.mouseListener;
   }

   public MouseMotionListener getMouseMotionListener() {
      return this.mouseMotionListener;
   }

   public KeyListener getKeyListener() {
      return this.keyListener;
   }

   public void uninstallingUI() {
      this.comboBox.removePropertyChangeListener(this.propertyChangeListener);
      this.comboBox.removeItemListener(this.itemListener);
      this.uninstallComboBoxModelListeners(this.comboBox.getModel());
      this.uninstallKeyboardActions();
      this.uninstallListListeners();
      this.list.setModel(EmptyListModel);
   }

   protected void uninstallComboBoxModelListeners(ComboBoxModel var1) {
      if (var1 != null) {
         var1.removeListDataListener(this.listDataListener);
      }

   }

   protected void uninstallKeyboardActions() {
      this.comboBox.unregisterKeyboardAction(KeyStroke.getKeyStroke(10, 0));
   }

   public BasicComboPopup(JComboBox var1) {
      this.comboBox = var1;
      Object var2 = ((JComponent)var1).getClientProperty("JComboBox.lightweightKeyboardNavigation");
      if (var2 != null) {
         if (var2.equals("Lightweight")) {
            this.lightNav = true;
         } else if (var2.equals("Heavyweight")) {
            this.lightNav = false;
         }
      }

      this.mouseListener = this.createMouseListener();
      this.mouseMotionListener = this.createMouseMotionListener();
      this.keyListener = this.createKeyListener();
      this.listSelectionListener = this.createListSelectionListener();
      this.listDataListener = this.createListDataListener();
      this.listMouseListener = this.createListMouseListener();
      this.listMouseMotionListener = this.createListMouseMotionListener();
      this.propertyChangeListener = this.createPropertyChangeListener();
      this.itemListener = this.createItemListener();
      this.list = this.createList();
      this.configureList();
      this.scroller = this.createScroller();
      this.configureScroller();
      this.configurePopup();
      this.installComboBoxListeners();
      this.installKeyboardActions();
   }

   protected MouseListener createMouseListener() {
      return new InvocationMouseHandler(this);
   }

   protected MouseMotionListener createMouseMotionListener() {
      return new InvocationMouseMotionHandler(this);
   }

   protected KeyListener createKeyListener() {
      return new InvocationKeyHandler(this);
   }

   protected ListSelectionListener createListSelectionListener() {
      return new ListSelectionHandler(this);
   }

   protected ListDataListener createListDataListener() {
      return new ListDataHandler(this);
   }

   protected MouseListener createListMouseListener() {
      return new ListMouseHandler(this);
   }

   protected MouseMotionListener createListMouseMotionListener() {
      return new ListMouseMotionHandler(this);
   }

   protected PropertyChangeListener createPropertyChangeListener() {
      return new PropertyChangeHandler(this);
   }

   protected ItemListener createItemListener() {
      return new ItemHandler(this);
   }

   protected JList createList() {
      return new JList(this.comboBox.getModel());
   }

   protected void configureList() {
      this.list.setFont(this.comboBox.getFont());
      this.list.setForeground(this.comboBox.getForeground());
      this.list.setBackground(this.comboBox.getBackground());
      this.list.setSelectionForeground(UIManager.getColor("ComboBox.selectionForeground"));
      this.list.setSelectionBackground(UIManager.getColor("ComboBox.selectionBackground"));
      this.list.setBorder((Border)null);
      this.list.setCellRenderer(this.comboBox.getRenderer());
      this.list.setRequestFocusEnabled(false);
      this.syncListSelectionWithComboBoxSelection();
      this.list.setSelectionMode(0);
      this.installListListeners();
   }

   protected void installListListeners() {
      this.list.addListSelectionListener(this.listSelectionListener);
      this.list.addMouseMotionListener(this.listMouseMotionListener);
      this.list.addMouseListener(this.listMouseListener);
   }

   void uninstallListListeners() {
      this.list.removeListSelectionListener(this.listSelectionListener);
      this.list.removeMouseMotionListener(this.listMouseMotionListener);
      this.list.removeMouseListener(this.listMouseListener);
   }

   protected JScrollPane createScroller() {
      return new JScrollPane(this.list, 20, 31);
   }

   protected void configureScroller() {
      this.scroller.setRequestFocusEnabled(false);
      this.scroller.getVerticalScrollBar().setRequestFocusEnabled(false);
      this.scroller.setBorder((Border)null);
   }

   protected void configurePopup() {
      ((Container)this).setLayout(new BoxLayout(this, 1));
      ((JPopupMenu)this).setBorderPainted(true);
      ((JComponent)this).setBorder(BorderFactory.createLineBorder(Color.black));
      ((JComponent)this).setOpaque(false);
      ((Container)this).add(this.scroller);
      ((JComponent)this).setDoubleBuffered(true);
      ((JComponent)this).setRequestFocusEnabled(false);
   }

   protected void installComboBoxListeners() {
      this.comboBox.addPropertyChangeListener(this.propertyChangeListener);
      this.comboBox.addItemListener(this.itemListener);
      this.installComboBoxModelListeners(this.comboBox.getModel());
   }

   protected void installComboBoxModelListeners(ComboBoxModel var1) {
      if (var1 != null) {
         var1.addListDataListener(this.listDataListener);
      }

   }

   protected void installKeyboardActions() {
      2 var1 = new 2(this);
      this.comboBox.registerKeyboardAction(var1, KeyStroke.getKeyStroke(10, 0), 1);
   }

   public boolean isFocusTraversable() {
      return false;
   }

   protected void startAutoScrolling(int var1) {
      if (this.isAutoScrolling) {
         this.autoscrollTimer.stop();
      }

      this.isAutoScrolling = true;
      if (var1 == 0) {
         this.scrollDirection = 0;
         Point var2 = SwingUtilities.convertPoint(this.scroller, new Point(1, 1), this.list);
         int var3 = this.list.locationToIndex(var2);
         this.valueIsAdjusting = true;
         this.list.setSelectedIndex(var3);
         this.valueIsAdjusting = false;
         3 var4 = new 3(this);
         this.autoscrollTimer = new Timer(100, var4);
      } else if (var1 == 1) {
         this.scrollDirection = 1;
         Dimension var6 = this.scroller.getSize();
         Point var7 = SwingUtilities.convertPoint(this.scroller, new Point(1, var6.height - 1 - 2), this.list);
         int var8 = this.list.locationToIndex(var7);
         this.valueIsAdjusting = true;
         this.list.setSelectedIndex(var8);
         this.valueIsAdjusting = false;
         4 var5 = new 4(this);
         this.autoscrollTimer = new Timer(100, var5);
      }

      this.autoscrollTimer.start();
   }

   protected void stopAutoScrolling() {
      this.isAutoScrolling = false;
      if (this.autoscrollTimer != null) {
         this.autoscrollTimer.stop();
         this.autoscrollTimer = null;
      }

   }

   protected void autoScrollUp() {
      int var1 = this.list.getSelectedIndex();
      if (var1 > 0) {
         this.valueIsAdjusting = true;
         this.list.setSelectedIndex(var1 - 1);
         this.valueIsAdjusting = false;
         this.list.ensureIndexIsVisible(var1 - 1);
      }

   }

   protected void autoScrollDown() {
      int var1 = this.list.getSelectedIndex();
      int var2 = this.list.getModel().getSize() - 1;
      if (var1 < var2) {
         this.valueIsAdjusting = true;
         this.list.setSelectedIndex(var1 + 1);
         this.valueIsAdjusting = false;
         this.list.ensureIndexIsVisible(var1 + 1);
      }

   }

   protected void delegateFocus(MouseEvent var1) {
      if (this.comboBox.isEditable()) {
         this.comboBox.getEditor().getEditorComponent().requestFocus();
      } else {
         this.comboBox.requestFocus();
      }

   }

   protected void togglePopup() {
      if (((JPopupMenu)this).isVisible()) {
         this.hide();
      } else {
         this.show();
      }

   }

   void syncListSelectionWithComboBoxSelection() {
      int var1 = this.comboBox.getSelectedIndex();
      if (var1 == -1) {
         this.list.clearSelection();
      } else {
         this.list.setSelectedIndex(var1);
      }

   }

   protected MouseEvent convertMouseEvent(MouseEvent var1) {
      Point var2 = SwingUtilities.convertPoint((Component)((EventObject)var1).getSource(), var1.getPoint(), this.list);
      MouseEvent var3 = new MouseEvent((Component)((EventObject)var1).getSource(), ((AWTEvent)var1).getID(), ((InputEvent)var1).getWhen(), ((InputEvent)var1).getModifiers(), var2.x, var2.y, ((InputEvent)var1).getModifiers(), var1.isPopupTrigger());
      return var3;
   }

   protected int getPopupHeightForRowCount(int var1) {
      int var2 = this.comboBox.getModel().getSize();
      int var3 = Math.min(var1, var2);
      int var4 = 0;
      ListCellRenderer var5 = this.list.getCellRenderer();
      Object var6 = null;

      for(int var7 = 0; var7 < var3; ++var7) {
         var6 = this.list.getModel().getElementAt(var7);
         Component var8 = var5.getListCellRendererComponent(this.list, var6, var7, false, false);
         var4 += var8.getPreferredSize().height;
      }

      return var4 == 0 ? 100 : var4;
   }

   protected Rectangle computePopupBounds(int var1, int var2, int var3, int var4) {
      Rectangle var5 = new Rectangle();
      Rectangle var6 = new Rectangle(var1, var2, var3, var4);
      Point var7 = new Point(0, 0);
      Dimension var8 = Toolkit.getDefaultToolkit().getScreenSize();
      SwingUtilities.convertPointFromScreen(var7, this.comboBox);
      var5.x = var7.x;
      var5.y = var7.y;
      var5.width = var8.width;
      var5.height = var8.height;
      return SwingUtilities.isRectangleContainingRectangle(var5, var6) ? var6 : new Rectangle(0, -var6.height, var6.width, var6.height);
   }

   protected void updateListBoxSelectionForEvent(MouseEvent var1, boolean var2) {
      Point var3 = var1.getPoint();
      if (this.list != null) {
         int var4 = this.list.locationToIndex(var3);
         if (var4 == -1) {
            if (var3.y < 0) {
               var4 = 0;
            } else {
               var4 = this.comboBox.getModel().getSize() - 1;
            }
         }

         if (this.list.getSelectedIndex() != var4) {
            this.list.setSelectedIndex(var4);
            if (var2) {
               this.list.ensureIndexIsVisible(var4);
            }
         }

      }
   }

   // $FF: synthetic method
   static boolean access$000(BasicComboPopup var0) {
      return var0.lightNav;
   }

   // $FF: synthetic method
   static boolean access$002(BasicComboPopup var0, boolean var1) {
      return var0.lightNav = var1;
   }
}