/*
 * Copyright (c) 1995, 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.awt;

import java.awt.*;

/**
 * FocusingTextField: a subclass of java.awt.TextField that handles moving the
 * input focus from field to field, as when the user hits 'return.'
 *
 * @author Herb Jellinek
 */

public class FocusingTextField extends TextField {

    /** The field to move to on 'return' - can be null. */
    TextField next;

    /** If true, select the contents of the field when it gets the focus. */
    boolean willSelect;

    /**
     * Create a FocusingTextField.
     * @param cols number of columns of text.
     */
    public FocusingTextField(int cols) {
        super("", cols);
    }

    /**
     * Create a FocusingTextField.
     * @param cols number of columns of text.
     * @param willSelect if true, will select all contents of field when
     * focus is gained.
     */
    public FocusingTextField(int cols, boolean willSelect) {
        this(cols);
        this.willSelect = willSelect;
    }

    public void setWillSelect(boolean will) {
        willSelect = will;
    }

    public boolean getWillSelect() {
        return willSelect;
    }

    /**
     * Call this to set the next field to receive the input focus.
     * @param next the next TextField in order - can be null.
     */
    public void setNextField(TextField next) {
        this.next = next;
    }

    /**
     * We got the focus.  If willSelect is true, select everything.
     */
    public boolean gotFocus(Event e, Object arg) {
        if (willSelect) {
            select(0, getText().length());
        }
        return true;
    }

    /**
     * We lost the focus.  If willSelect is true, deselect everything.
     */
    public boolean lostFocus(Event e, Object arg) {
        if (willSelect) {
            select(0, 0);
        }
        return true;
    }

    /**
     * Pass the focus to the next guy, if any.
     */
    public void nextFocus() {
        if (next != null) {
            next.requestFocus();
        }
        super.nextFocus();
    }
}