/* * Copyright 1999-2005 The Apache Software Foundation. *  * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at *  *      http://www.apache.org/licenses/LICENSE-2.0 *  * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package org.apache.log4j.lf5.viewer.categoryexplorer;import javax.swing.*;import javax.swing.event.CellEditorListener;import javax.swing.event.ChangeEvent;import javax.swing.event.EventListenerList;import javax.swing.table.TableCellEditor;import javax.swing.tree.TreeCellEditor;import java.awt.*;import java.awt.event.MouseEvent;import java.util.EventObject;/** * CategoryAbstractCellEditor.  Base class to handle the some common * details of cell editing. * * @author Michael J. Sikorsky * @author Robert Shaw */// Contributed by ThoughtWorks Inc.public class CategoryAbstractCellEditor implements TableCellEditor, TreeCellEditor {  //--------------------------------------------------------------------------  //   Constants:  //--------------------------------------------------------------------------  //--------------------------------------------------------------------------  //   Protected Variables:  //--------------------------------------------------------------------------  protected EventListenerList _listenerList = new EventListenerList();  protected Object _value;  protected ChangeEvent _changeEvent = null;  protected int _clickCountToStart = 1;  //--------------------------------------------------------------------------  //   Private Variables:  //--------------------------------------------------------------------------  //--------------------------------------------------------------------------  //   Constructors:  //--------------------------------------------------------------------------  //--------------------------------------------------------------------------  //   Public Methods:  //--------------------------------------------------------------------------  public Object getCellEditorValue() {    return _value;  }  public void setCellEditorValue(Object value) {    _value = value;  }  public void setClickCountToStart(int count) {    _clickCountToStart = count;  }  public int getClickCountToStart() {    return _clickCountToStart;  }  public boolean isCellEditable(EventObject anEvent) {    if (anEvent instanceof MouseEvent) {      if (((MouseEvent) anEvent).getClickCount() < _clickCountToStart) {        return false;      }    }    return true;  }  public boolean shouldSelectCell(EventObject anEvent) {    if (this.isCellEditable(anEvent)) {      if (anEvent == null ||          ((MouseEvent) anEvent).getClickCount() >= _clickCountToStart) {        return true;      }    }    return false;  }  public boolean stopCellEditing() {    fireEditingStopped();    return true;  }  public void cancelCellEditing() {    fireEditingCanceled();  }  public void addCellEditorListener(CellEditorListener l) {    _listenerList.add(CellEditorListener.class, l);  }  public void removeCellEditorListener(CellEditorListener l) {    _listenerList.remove(CellEditorListener.class, l);  }  public Component getTreeCellEditorComponent(      JTree tree, Object value,      boolean isSelected,      boolean expanded,      boolean leaf, int row) {    return null;  }  public Component getTableCellEditorComponent(      JTable table, Object value,      boolean isSelected,      int row, int column) {    return null;  }  //--------------------------------------------------------------------------  //   Protected Methods:  //--------------------------------------------------------------------------  protected void fireEditingStopped() {    Object[] listeners = _listenerList.getListenerList();    for (int i = listeners.length - 2; i >= 0; i -= 2) {      if (listeners[i] == CellEditorListener.class) {        if (_changeEvent == null) {          _changeEvent = new ChangeEvent(this);        }        ((CellEditorListener) listeners[i + 1]).editingStopped(_changeEvent);      }    }  }  protected void fireEditingCanceled() {    Object[] listeners = _listenerList.getListenerList();    for (int i = listeners.length - 2; i >= 0; i -= 2) {      if (listeners[i] == CellEditorListener.class) {        if (_changeEvent == null) {          _changeEvent = new ChangeEvent(this);        }        ((CellEditorListener) listeners[i + 1]).editingCanceled(_changeEvent);      }    }  }  //--------------------------------------------------------------------------  //   Private Methods:  //--------------------------------------------------------------------------  //--------------------------------------------------------------------------  //   Nested Top-Level Classes or Interfaces:  //--------------------------------------------------------------------------}