/*

 * 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.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package sun.tools.jconsole.inspector;

import java.awt.*;

import java.awt.dnd.*;

import java.awt.event.*;

import java.awt.datatransfer.*;

import java.io.*;

import java.util.*;

import javax.swing.plaf.*;

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 static final Color selF = Color.red;

    private static final Color selB = Color.yellow;

    private Color fore=null, back=null;

    private HashMap items = null; //used for popup menu selection

    private XObject selectedObject;

    private XObject currentObject;

    private Class expectedClass;

    private Object value;

    protected JTextField textField;

    private JButton browseObjects;

    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.expectedClass = expectedClass;

        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) {

        this.expectedClass = expectedClass;

        this.value = value;

        boolean fieldEditable =  Utils.isEditableType(expectedClass.getName());

        clearObject();

        if (value != null) {

            currentObject = new XObject(value);

            textField.setText(value.toString());

        }

        else {

            currentObject = XObject.NULL_OBJECT;

            //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 setObject(XObject object) {

        clearObject();

        selectedObject = object;

        currentObject = object;

        setSelectedColors();

        textField.setText(object.getText());

        textField.getDocument().addDocumentListener(this);

        paintImmediately(getVisibleRect());

    }

    private synchronized void clearObject() {

        textField.getDocument().removeDocumentListener(this);

        selectedObject = null;

        currentObject = null;

        setDefaultColors();

    }

    private synchronized void setSelectedColors() {

        // fore = textField.getForeground();

        // back = textField.getBackground();

        //textField.setForeground(Color.red);

        // textField.setBackground(Color.yellow);

    }

    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;

        }

    }

    private JPopupMenu buildEditPopupMenu() {

        JPopupMenu menu = new JPopupMenu();

        return menu;

    }

    // 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 obejct that was dropped.

        clearObject();

    }

    public void removeUpdate(DocumentEvent e) {

        // the user typed something, so remove references

        // to the obejct that was dropped.

        clearObject();

    }

    public void insertUpdate(DocumentEvent e) {

        // the user typed something, so remove references

        // to the obejct that was dropped.

        clearObject();

    }

}