Package org.pentaho.reporting.libraries.designtime.swing.propertyeditors

Source Code of org.pentaho.reporting.libraries.designtime.swing.propertyeditors.PropertyCellEditorWithEllipsis

/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* Copyright (c) 2002-2013 Pentaho Corporation..  All rights reserved.
*/

package org.pentaho.reporting.libraries.designtime.swing.propertyeditors;

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dialog;
import java.awt.Frame;
import java.awt.Window;
import java.awt.event.ActionEvent;
import java.beans.PropertyEditor;
import java.util.EventObject;
import javax.swing.AbstractAction;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.event.CellEditorListener;
import javax.swing.event.ChangeEvent;
import javax.swing.event.EventListenerList;
import javax.swing.table.TableCellEditor;

import org.pentaho.reporting.libraries.designtime.swing.EllipsisButton;
import org.pentaho.reporting.libraries.designtime.swing.LibSwingUtil;
import org.pentaho.reporting.libraries.designtime.swing.Messages;

public class PropertyCellEditorWithEllipsis extends JPanel implements TableCellEditor
{
  private static final String POPUP_EDITOR = "popupEditor";

  private class ExtendedEditorAction extends AbstractAction
  {
    /**
     * Defines an <code>Action</code> object with a default description string and default icon.
     */
    private ExtendedEditorAction()
    {
    }

    /**
     * Invoked when an action occurs.
     */
    public void actionPerformed(final ActionEvent e)
    {
      if (propertyEditor == null)
      {
        return;
      }

      if (propertyEditor.supportsCustomEditor())
      {
        final Window window = LibSwingUtil.getWindowAncestor(PropertyCellEditorWithEllipsis.this);

        final CustomPropertyEditorDialog editorDialog;
        if (window instanceof Frame)
        {
          editorDialog = new CustomPropertyEditorDialog((Frame) window);
        }
        else if (window instanceof Dialog)
        {
          editorDialog = new CustomPropertyEditorDialog((Dialog) window);
        }
        else
        {
          editorDialog = new CustomPropertyEditorDialog();
        }
        if (editorDialog.performEdit(propertyEditor))
        {
          textField.setText(propertyEditor.getAsText());
          stopCellEditing();
        }
      }
      else
      {
        final BasicTextPropertyEditorDialog editorDialog = createTextEditorDialog();
        if (editorDialog.performEdit(propertyEditor))
        {
          textField.setText(propertyEditor.getAsText());
          stopCellEditing();
        }
      }
    }
  }

  private JTextField textField;
  private JButton ellipsisButton;
  private EventListenerList eventListenerList;
  private boolean nullable;
  private PropertyEditor propertyEditor;

  public PropertyCellEditorWithEllipsis()
  {
    setLayout(new BorderLayout());

    this.eventListenerList = new EventListenerList();

    ellipsisButton = new EllipsisButton("...");
    ellipsisButton.addActionListener(new ExtendedEditorAction());

    textField = new JTextField();
    textField.getInputMap().put
        (Messages.getInstance().getKeyStroke("PropertyCellEditorWithEllipsis.PopupEditor.Accelerator"), POPUP_EDITOR);
    textField.getActionMap().put(POPUP_EDITOR, new ExtendedEditorAction());
    textField.setBorder(BorderFactory.createEmptyBorder());

    add(textField, BorderLayout.CENTER);
    add(ellipsisButton, BorderLayout.EAST);

    nullable = false;
  }

  protected BasicTextPropertyEditorDialog createTextEditorDialog()
  {
    final Window window = LibSwingUtil.getWindowAncestor(PropertyCellEditorWithEllipsis.this);

    final BasicTextPropertyEditorDialog editorDialog;
    if (window instanceof Frame)
    {
      editorDialog = new BasicTextPropertyEditorDialog((Frame) window);
    }
    else if (window instanceof Dialog)
    {
      editorDialog = new BasicTextPropertyEditorDialog((Dialog) window);
    }
    else
    {
      editorDialog = new BasicTextPropertyEditorDialog();
    }
    return editorDialog;
  }

  public PropertyEditor getPropertyEditor()
  {
    return propertyEditor;
  }

  public void setPropertyEditor(final PropertyEditor propertyEditor)
  {
    this.propertyEditor = propertyEditor;
    if (propertyEditor instanceof AdvancedPropertyEditor)
    {
      final AdvancedPropertyEditor advancedPropertyEditor = (AdvancedPropertyEditor) propertyEditor;
      textField.setEditable(advancedPropertyEditor.supportsText());
    }
    else
    {
      textField.setEditable(true);
    }
  }

  public boolean isNullable()
  {
    return nullable;
  }

  public void setNullable(final boolean nullable)
  {
    this.nullable = nullable;
  }

  public void requestFocus()
  {
    textField.requestFocus();
  }

  public JTextField getTextField()
  {
    return textField;
  }

  public JButton getEllipsisButton()
  {
    return ellipsisButton;
  }

  /**
   * Returns the value contained in the editor.
   *
   * @return the value contained in the editor
   */
  public Object getCellEditorValue()
  {
    return propertyEditor.getValue();
  }

  /**
   * Asks the editor if it can start editing using <code>anEvent</code>. <code>anEvent</code> is in the invoking
   * component coordinate system. The editor can not assume the Component returned by
   * <code>getCellEditorComponent</code> is installed.  This method is intended for the use of client to avoid the cost
   * of setting up and installing the editor component if editing is not possible. If editing can be started this method
   * returns true.
   *
   * @param anEvent the event the editor should use to consider whether to begin editing or not
   * @return true if editing can be started
   */
  public boolean isCellEditable(final EventObject anEvent)
  {
    return true;
  }

  /**
   * Returns true if the editing cell should be selected, false otherwise. Typically, the return value is true, because
   * is most cases the editing cell should be selected.  However, it is useful to return false to keep the selection
   * from changing for some types of edits. eg. A table that contains a column of check boxes, the user might want to be
   * able to change those checkboxes without altering the selection.  (See Netscape Communicator for just such an
   * example) Of course, it is up to the client of the editor to use the return value, but it doesn't need to if it
   * doesn't want to.
   *
   * @param anEvent the event the editor should use to start editing
   * @return true if the editor would like the editing cell to be selected; otherwise returns false
   */
  public boolean shouldSelectCell(final EventObject anEvent)
  {
    return true;
  }

  /**
   * Tells the editor to stop editing and accept any partially edited value as the value of the editor.  The editor
   * returns false if editing was not stopped; this is useful for editors that validate and can not accept invalid
   * entries.
   *
   * @return true if editing was stopped; false otherwise
   */
  public boolean stopCellEditing()
  {
    try
    {
      propertyEditor.setAsText(textField.getText());
      fireEditingStopped();
      textField.setText(null);
      return true;
    }
    catch (Exception e)
    {
      fireEditingCanceled();
      textField.setText(null);
      return true;
    }

  }

  /**
   * Tells the editor to cancel editing and not accept any partially edited value.
   */
  public void cancelCellEditing()
  {
    textField.setText(null);
    fireEditingCanceled();
  }

  protected void fireEditingCanceled()
  {
    final CellEditorListener[] listeners = eventListenerList.getListeners(CellEditorListener.class);
    final ChangeEvent event = new ChangeEvent(this);
    for (int i = 0; i < listeners.length; i++)
    {
      final CellEditorListener listener = listeners[i];
      listener.editingCanceled(event);
    }
  }


  protected void fireEditingStopped()
  {
    final CellEditorListener[] listeners = eventListenerList.getListeners(CellEditorListener.class);
    final ChangeEvent event = new ChangeEvent(this);
    for (int i = 0; i < listeners.length; i++)
    {
      final CellEditorListener listener = listeners[i];
      listener.editingStopped(event);
    }
  }

  /**
   * Adds a listener to the list that's notified when the editor stops, or cancels editing.
   *
   * @param l the CellEditorListener
   */
  public void addCellEditorListener(final CellEditorListener l)
  {
    eventListenerList.add(CellEditorListener.class, l);
  }

  /**
   * Removes a listener from the list that's notified
   *
   * @param l the CellEditorListener
   */
  public void removeCellEditorListener(final CellEditorListener l)
  {
    eventListenerList.remove(CellEditorListener.class, l);
  }

  /**
   * Sets an initial <code>value</code> for the editor.  This will cause the editor to <code>stopEditing</code> and lose
   * any partially edited value if the editor is editing when this method is called. <p>
   * <p/>
   * Returns the component that should be added to the client's <code>Component</code> hierarchy.  Once installed in the
   * client's hierarchy this component will then be able to draw and receive user input.
   *
   * @param table      the <code>JTable</code> that is asking the editor to edit; can be <code>null</code>
   * @param value      the value of the cell to be edited; it is up to the specific editor to interpret and draw the
   *                   value.  For example, if value is the string "true", it could be rendered as a string or it could
   *                   be rendered as a check box that is checked.  <code>null</code> is a valid value
   * @param isSelected true if the cell is to be rendered with highlighting
   * @param row        the row of the cell being edited
   * @param column     the column of the cell being edited
   * @return the component for editing
   */
  public Component getTableCellEditorComponent(final JTable table,
                                               final Object value,
                                               final boolean isSelected,
                                               final int row,
                                               final int column)
  {
    propertyEditor.setValue(value);
    if (value == null)
    {
      textField.setText(null);
    }
    else
    {
      textField.setText(propertyEditor.getAsText());
    }
    return this;
  }
}
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