/*

 * Copyright (c) 2011, 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.lwawt;

import java.awt.Dimension;

import java.awt.Point;

import java.awt.TextField;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.FocusEvent;

import java.awt.peer.TextFieldPeer;

import javax.swing.*;

import javax.swing.text.JTextComponent;

/**

 * Lightweight implementation of {@link TextFieldPeer}. Delegates most of the

 * work to the {@link JPasswordField}.

 */

final class LWTextFieldPeer

        extends LWTextComponentPeer<TextField, JPasswordField>

        implements TextFieldPeer, ActionListener {

    LWTextFieldPeer(final TextField target,

                    final PlatformComponent platformComponent) {

        super(target, platformComponent);

    }

    @Override

    JPasswordField createDelegate() {

        return new JPasswordFieldDelegate();

    }

    @Override

    void initializeImpl() {

        super.initializeImpl();

        setEchoChar(getTarget().getEchoChar());

        synchronized (getDelegateLock()) {

            getDelegate().addActionListener(this);

        }

    }

    @Override

    public JTextComponent getTextComponent() {

        return getDelegate();

    }

    @Override

    public void setEchoChar(final char echoChar) {

        synchronized (getDelegateLock()) {

            getDelegate().setEchoChar(echoChar);

            final boolean cutCopyAllowed;

            final String focusInputMapKey;

            if (echoChar != 0) {

                cutCopyAllowed = false;

                focusInputMapKey = "PasswordField.focusInputMap";

            } else {

                cutCopyAllowed = true;

                focusInputMapKey = "TextField.focusInputMap";

            }

            getDelegate().putClientProperty("JPasswordField.cutCopyAllowed", cutCopyAllowed);

            InputMap inputMap = (InputMap) UIManager.get(focusInputMapKey);

            SwingUtilities.replaceUIInputMap(getDelegate(), JComponent.WHEN_FOCUSED, inputMap);

        }

    }

    @Override

    public Dimension getPreferredSize(final int columns) {

        return getMinimumSize(columns);

    }

    @Override

    public Dimension getMinimumSize(final int columns) {

        return getMinimumSize(1, columns);

    }

    @Override

    public void actionPerformed(final ActionEvent e) {

        postEvent(new ActionEvent(getTarget(), ActionEvent.ACTION_PERFORMED,

                getText(), e.getWhen(), e.getModifiers()));

    }

    /**

     * Restoring native behavior. We should sets the selection range to zero,

     * when component lost its focus.

     *

     * @param e the focus event

     */

    @Override

    void handleJavaFocusEvent(final FocusEvent e) {

        if (e.getID() == FocusEvent.FOCUS_LOST) {

            // In order to de-select the selection

            setCaretPosition(0);

        }

        super.handleJavaFocusEvent(e);

    }

    @SuppressWarnings("serial")// Safe: outer class is non-serializable.

    private final class JPasswordFieldDelegate extends JPasswordField {

        // Empty non private constructor was added because access to this

        // class shouldn't be emulated by a synthetic accessor method.

        JPasswordFieldDelegate() {

            super();

        }

        @Override

        public void replaceSelection(String content) {

            getDocument().removeDocumentListener(LWTextFieldPeer.this);

            super.replaceSelection(content);

            // post only one text event in this case

            postTextEvent();

            getDocument().addDocumentListener(LWTextFieldPeer.this);

        }

        @Override

        public boolean hasFocus() {

            return getTarget().hasFocus();

        }

        @Override

        public Point getLocationOnScreen() {

            return LWTextFieldPeer.this.getLocationOnScreen();

        }

    }

}