integercelleditor.java

具有不同语法高亮的编辑器实例

/*
 * 08/10/2005
 *
 * IntegerCellEditor.java - Editor component for ints.
 * Copyright (C) 2005 Robert Futrell
 * [e-mail]
 * www.website.com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or any later version.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package org.fife.ui.propertysheet.editors;

import java.awt.Component;
import java.text.MessageFormat;
import java.util.ResourceBundle;
import javax.swing.DefaultCellEditor;
import javax.swing.JOptionPane;
import javax.swing.JTable;
import javax.swing.JTextField;

import org.fife.ui.propertysheet.PropertySheetManager;
import org.fife.ui.propertysheet.PropertySheetUtilities;
import org.fife.ui.propertysheet.infos.IntegerPropertyInfo;


/**
 * Table cell editor for integers.
 *
 * @author Robert Futrell
 * @version 1.0
 */
public class IntegerCellEditor extends DefaultCellEditor {

	/**
	 * 
	 */
	private static final long serialVersionUID = -7036077578914401796L;
	protected IntegerPropertyInfo cachedInfo;


/*****************************************************************************/


	public IntegerCellEditor() {
		super(PropertySheetUtilities.createTextField());
		setClickCountToStart(1);
	}


/*****************************************************************************/


	protected boolean doCancel(String param, String errorDescription) {
		return doCancel(new String[] { param }, errorDescription);
	}


/*****************************************************************************/


	protected boolean doCancel(String[] params, String errorDescription) {
		// They can either click "OK" and continue the edit, or click
		// "Cancel" or x-out the dialog and cancel their edit.
		ResourceBundle msg = PropertySheetManager.getInstance().
											getErrorBundle();
		String desc = msg.getString(errorDescription);
		if (params!=null) {
			desc = MessageFormat.format(desc, params);
		}
		int rc = JOptionPane.showConfirmDialog(null,
			msg.getString("Editor.ErrorMessage.General") + "\n" +
			desc,
			msg.getString("Editor.ErrorMessage.Title"),
			JOptionPane.OK_CANCEL_OPTION, JOptionPane.ERROR_MESSAGE);
		boolean doCancel = rc!=JOptionPane.OK_OPTION;
		if (doCancel)
			fireEditingCanceled(); // Revert to previous valid value.
		return doCancel;
	}


/*****************************************************************************/


	public Object getCellEditorValue() {
		int value = 0;
		try {
			String text = (String)((JTextField)editorComponent).getText();
			value = Integer.parseInt(text);
		} catch (NumberFormatException nfe) { // Should never happen.
			value = Integer.MIN_VALUE;
		}
		cachedInfo.setValue(new Integer(value));
		return cachedInfo;
	}


/*****************************************************************************/


	public Component getTableCellEditorComponent(JTable table, Object value,
							boolean isSelected, int row, int column) {
		// DefaultCellEditor uses "value" as the initial text of the text
		// field.
		cachedInfo = (IntegerPropertyInfo)value;
		return super.getTableCellEditorComponent(table,
									cachedInfo.getValue().toString(),
									isSelected, row, column);
	}


/*****************************************************************************/


	/**
	 * Called when an editor is about to stop editing.  This method is used
	 * to determine whether or not the editing should actually stop.  It
	 * checks whether the entered value is a Java integer; if not, an error
	 * is displayed and editing continues.
	 *
	 * @return Whether or not editing should cease.
	 */
	public boolean stopCellEditing() {

		JTextField component = (JTextField)getComponent();
		String text = component.getText();
		int value = 0;

		// First, just make sure that what they entered was an int.
		try {
			value = Integer.parseInt(text);
			// Check bounds, if any are set.
		} catch (NumberFormatException nfe) {
			return doCancel(text, "Editor.ErrorMessage.Integer");
		}

		// Then, if this int property has special bounds, check them too.
		IntegerPropertyInfo.IntegerBounds bounds = cachedInfo.getBounds();
		if (bounds!=null) {
			int min = bounds.getMinValue();
			int max = bounds.getMaxValue();
			if (value<min || value>max) {
				return doCancel(new String[] { ""+min, ""+max, },
							"Editor.ErrorMessage.Integer.Bounds");
			}
		}

		// Otherwise, just do normal checking for editor canceling.
		return super.stopCellEditing();

	}


/*****************************************************************************/

}