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	/*
	* Copyright (c) 2004, 2013, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code 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
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package sun.tools.jconsole.inspector;

	import java.awt.*;
	import java.awt.event.*;
	import javax.swing.event.*;
	import javax.swing.*;


	/**
	* This list implements the drag and drop functionality.
	*/
	@SuppressWarnings("serial")
	public class XTextField extends JPanel
	implements DocumentListener,
	ActionListener {

	private XObject selectedObject;
	protected JTextField textField;

	private static boolean allowNullSelection = false;

	protected final static int COMPATIBLE_VALUE = 1;
	protected final static int CURRENT_VALUE = 2;
	protected final static int NULL_VALUE = 3;

	private JButton button;
	private XOperations operation;

	//used in XTestFieldEditor
	public XTextField() {
	super(new BorderLayout());
	add(textField = new JTextField(),BorderLayout.CENTER);
	textField.addActionListener(this);
	//
	}

	public XTextField(Object value) {
	this(value,value.toString().length());
	}

	public XTextField(Object value, int colWidth) {
	this(value,value.getClass(),colWidth, true, null, null);
	}

	public XTextField(Object value,
	Class<?> expectedClass,
	int colWidth,
	boolean isCallable,
	JButton button,
	XOperations operation) {
	super(new BorderLayout());
	this.button = button;
	this.operation = operation;
	add(textField = new JTextField(value.toString(),colWidth),
	BorderLayout.CENTER);
	if(isCallable)
	textField.addActionListener(this);

	boolean fieldEditable = Utils.isEditableType(expectedClass.getName());
	if (fieldEditable && isCallable) {
	textField.setEditable(true);
	}
	else {
	textField.setEditable(false);
	}
	}

	public static void setNullSelectionAllowed(boolean allowNullSelection) {
	XTextField.allowNullSelection = allowNullSelection;
	}

	public static boolean getNullSelectionAllowed() {
	return allowNullSelection;
	}

	protected void init(Object value, Class<?> expectedClass) {
	boolean fieldEditable = Utils.isEditableType(expectedClass.getName());
	clearObject();
	if (value != null) {
	textField.setText(value.toString());
	}
	else {
	//null String value for the moment
	textField.setText("");
	}
	textField.setToolTipText(null);
	if (fieldEditable) {
	if (!textField.isEditable()) {
	textField.setEditable(true);
	}

	}
	else {
	if (textField.isEditable()) {
	textField.setEditable(false);
	}
	}
	}

	private synchronized void clearObject() {
	textField.getDocument().removeDocumentListener(this);
	selectedObject = null;
	setDefaultColors();
	}

	private synchronized void setDefaultColors() {
	// if (fore != null) textField.setForeground(fore);
	// if (back != null) textField.setBackground(back);
	}

	public void setHorizontalAlignment(int h) {
	textField.setHorizontalAlignment(h);
	}

	//can be overwritten
	protected JMenuItem buildJMenuItem(XObject xobject, int valueType) {
	if (valueType == COMPATIBLE_VALUE) {
	return new JMenuItem(xobject.getText());
	}
	else if (valueType == CURRENT_VALUE) {
	return new JMenuItem("> "+xobject.getText());
	}
	else if (valueType == NULL_VALUE) {
	return new JMenuItem("null");
	}
	else {
	return null;
	}
	}

	// ACTIONLISTENER IMPLEMENTATION
	public void actionPerformed(ActionEvent e) {
	if (e.getSource() instanceof JTextField) {
	if(operation != null)
	operation.performInvokeRequest(button);
	}
	}

	/**
	* This method returns either the user inputted String, or an XObject
	* if one was dropped on the input field.
	*/
	public Object getValue() {
	if (selectedObject!=null) {
	if (selectedObject == XObject.NULL_OBJECT) {
	//null case
	return null;
	}
	else {
	return selectedObject;
	}
	}
	else {
	return textField.getText();
	}
	}

	public void changedUpdate(DocumentEvent e) {
	// the user typed something, so remove references
	// to the object that was dropped.
	clearObject();
	}

	public void removeUpdate(DocumentEvent e) {
	// the user typed something, so remove references
	// to the object that was dropped.
	clearObject();
	}

	public void insertUpdate(DocumentEvent e) {
	// the user typed something, so remove references
	// to the object that was dropped.
	clearObject();
	}

	}

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