PC Plus SuperCD (UK) 2000 March/pcp161a.iso/handson/files/copyjava.exe/com/sun/java/swing/plaf/basic/BasicTreeCellEditorContainer.class

Java Class File | 1998-02-26 | 4.2 KB | 182 lines

package com.sun.java.swing.plaf.basic;

import com.sun.java.swing.Icon;
import com.sun.java.swing.JTree;
import com.sun.java.swing.event.CellEditorListener;
import com.sun.java.swing.tree.TreeCellEditor;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.LayoutManager;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.EventObject;
import java.util.Vector;

public class BasicTreeCellEditorContainer extends Container implements TreeCellEditor {
   protected BasicTreeCellRenderer renderer;
   protected transient Component editor;
   protected transient TreeCellEditor realEditor;
   protected transient Icon editingIcon;
   protected int editingOffset;
   protected boolean editingLeaf;
   protected boolean editingExpanded;

   public BasicTreeCellEditorContainer(TreeCellEditor var1, BasicTreeCellRenderer var2) {
      this.realEditor = var1;
      this.renderer = var2;
      ((Container)this).setLayout((LayoutManager)null);
   }

   public Object getCellEditorValue() {
      return this.realEditor.getCellEditorValue();
   }

   public boolean isCellEditable(EventObject var1) {
      if (this.realEditor.isCellEditable(var1)) {
         this.prepareForEditing();
         return true;
      } else {
         return false;
      }
   }

   public boolean shouldSelectCell(EventObject var1) {
      return this.realEditor.shouldSelectCell(var1);
   }

   protected void prepareForEditing() {
      ((Container)this).add(this.editor);
      if (this.renderer != null) {
         if (this.editingLeaf) {
            this.editingIcon = this.renderer.getLeafIcon();
         } else if (this.editingExpanded) {
            this.editingIcon = this.renderer.getOpenIcon();
         } else {
            this.editingIcon = this.renderer.getClosedIcon();
         }

         if (this.editingIcon == null) {
            this.editingOffset = 0;
         } else {
            this.editingOffset = this.renderer.getIconTextGap() + this.editingIcon.getIconWidth();
         }
      } else {
         this.editingOffset = 0;
         this.editingIcon = null;
      }
   }

   public boolean stopCellEditing() {
      if (this.realEditor.stopCellEditing()) {
         if (this.editor != null) {
            ((Container)this).remove(this.editor);
         }

         this.editingIcon = null;
         return true;
      } else {
         return false;
      }
   }

   public void cancelCellEditing() {
      this.realEditor.cancelCellEditing();
      if (this.editor != null) {
         ((Container)this).remove(this.editor);
      }

      this.editingIcon = null;
   }

   public void addCellEditorListener(CellEditorListener var1) {
      this.realEditor.addCellEditorListener(var1);
   }

   public void removeCellEditorListener(CellEditorListener var1) {
      this.realEditor.removeCellEditorListener(var1);
   }

   public void doLayout() {
      if (this.editor != null) {
         Dimension var1 = ((Component)this).getSize();
         this.editor.getPreferredSize();
         this.editor.setLocation(this.editingOffset, 0);
         this.editor.setBounds(this.editingOffset, 0, var1.width - this.editingOffset, var1.height);
      }

   }

   public Component getTreeCellEditorComponent(JTree var1, Object var2, boolean var3, boolean var4, boolean var5, int var6) {
      this.editingLeaf = var5;
      this.editingExpanded = var4;
      this.editor = this.realEditor.getTreeCellEditorComponent(var1, var2, var3, var4, var5, var6);
      return this;
   }

   public void paint(Graphics var1) {
      if (this.editingIcon != null) {
         int var2 = Math.max(0, (((Component)this).getSize().height - this.editingIcon.getIconHeight()) / 2);
         this.editingIcon.paintIcon(this, var1, 0, var2);
      }

      super.paint(var1);
   }

   public Dimension getPreferredSize() {
      if (this.editor != null) {
         Dimension var1 = this.editor.getPreferredSize();
         var1.width += this.editingOffset + 5;
         return var1;
      } else {
         return new Dimension(0, 0);
      }
   }

   public void requestFocus() {
      if (this.editor != null) {
         this.editor.requestFocus();
      } else {
         super.requestFocus();
      }
   }

   private void writeObject(ObjectOutputStream var1) throws IOException {
      Vector var2 = new Vector();
      var1.defaultWriteObject();
      if (this.editingIcon != null && this.editingIcon instanceof Serializable) {
         var2.addElement("editingIcon");
         var2.addElement(this.editingIcon);
      }

      if (this.realEditor != null && this.realEditor instanceof Serializable) {
         var2.addElement("realEditor");
         var2.addElement(this.realEditor);
      }

      var1.writeObject(var2);
   }

   private void readObject(ObjectInputStream var1) throws IOException, ClassNotFoundException {
      var1.defaultReadObject();
      Vector var2 = (Vector)var1.readObject();
      int var3 = 0;
      int var4 = var2.size();
      if (var3 < var4 && var2.elementAt(var3).equals("editingIcon")) {
         ++var3;
         this.editingIcon = (Icon)var2.elementAt(var3);
         ++var3;
      }

      if (var3 < var4 && var2.elementAt(var3).equals("realEditor")) {
         ++var3;
         this.realEditor = (TreeCellEditor)var2.elementAt(var3);
         ++var3;
      }

   }
}