/*

 * Copyright (c) 1998, 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

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 */

package javax.swing.plaf.metal;

import sun.swing.SwingUtilities2;

import sun.awt.AppContext;

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.plaf.basic.*;

import javax.swing.border.*;

import javax.swing.plaf.*;

import java.io.Serializable;

import javax.swing.text.View;

/**

 * RadioButtonUI implementation for MetalRadioButtonUI

 * <p>

 * <strong>Warning:</strong>

 * Serialized objects of this class will not be compatible with

 * future Swing releases. The current serialization support is

 * appropriate for short term storage or RMI between applications running

 * the same version of Swing.  As of 1.4, support for long term storage

 * of all JavaBeans™

 * has been added to the <code>java.beans</code> package.

 * Please see {@link java.beans.XMLEncoder}.

 *

 * @author Michael C. Albers (Metal modifications)

 * @author Jeff Dinkins (original BasicRadioButtonCode)

 */

public class MetalRadioButtonUI extends BasicRadioButtonUI {

    private static final Object METAL_RADIO_BUTTON_UI_KEY = new Object();

    protected Color focusColor;

    protected Color selectColor;

    protected Color disabledTextColor;

    private boolean defaults_initialized = false;

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

    //        Create PlAF

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

    public static ComponentUI createUI(JComponent c) {

        AppContext appContext = AppContext.getAppContext();

        MetalRadioButtonUI metalRadioButtonUI =

                (MetalRadioButtonUI) appContext.get(METAL_RADIO_BUTTON_UI_KEY);

        if (metalRadioButtonUI == null) {

            metalRadioButtonUI = new MetalRadioButtonUI();

            appContext.put(METAL_RADIO_BUTTON_UI_KEY, metalRadioButtonUI);

        }

        return metalRadioButtonUI;

    }

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

    //        Install Defaults

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

    public void installDefaults(AbstractButton b) {

        super.installDefaults(b);

        if(!defaults_initialized) {

            focusColor = UIManager.getColor(getPropertyPrefix() + "focus");

            selectColor = UIManager.getColor(getPropertyPrefix() + "select");

            disabledTextColor = UIManager.getColor(getPropertyPrefix() + "disabledText");

            defaults_initialized = true;

        }

        LookAndFeel.installProperty(b, "opaque", Boolean.TRUE);

    }

    protected void uninstallDefaults(AbstractButton b) {

        super.uninstallDefaults(b);

        defaults_initialized = false;

    }

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

    //         Default Accessors

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

    protected Color getSelectColor() {

        return selectColor;

    }

    protected Color getDisabledTextColor() {

        return disabledTextColor;

    }

    protected Color getFocusColor() {

        return focusColor;

    }

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

    //        Paint Methods

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

    public synchronized void paint(Graphics g, JComponent c) {

        AbstractButton b = (AbstractButton) c;

        ButtonModel model = b.getModel();

        Dimension size = c.getSize();

        int w = size.width;

        int h = size.height;

        Font f = c.getFont();

        g.setFont(f);

        FontMetrics fm = SwingUtilities2.getFontMetrics(c, g, f);

        Rectangle viewRect = new Rectangle(size);

        Rectangle iconRect = new Rectangle();

        Rectangle textRect = new Rectangle();

        Insets i = c.getInsets();

        viewRect.x += i.left;

        viewRect.y += i.top;

        viewRect.width -= (i.right + viewRect.x);

        viewRect.height -= (i.bottom + viewRect.y);

        Icon altIcon = b.getIcon();

        Icon selectedIcon = null;

        Icon disabledIcon = null;

        String text = SwingUtilities.layoutCompoundLabel(

            c, fm, b.getText(), altIcon != null ? altIcon : getDefaultIcon(),

            b.getVerticalAlignment(), b.getHorizontalAlignment(),

            b.getVerticalTextPosition(), b.getHorizontalTextPosition(),

            viewRect, iconRect, textRect, b.getIconTextGap());

        // fill background

        if(c.isOpaque()) {

            g.setColor(b.getBackground());

            g.fillRect(0,0, size.width, size.height);

        }

        // Paint the radio button

        if(altIcon != null) {

            if(!model.isEnabled()) {

                if(model.isSelected()) {

                   altIcon = b.getDisabledSelectedIcon();

                } else {

                   altIcon = b.getDisabledIcon();

                }

            } else if(model.isPressed() && model.isArmed()) {

                altIcon = b.getPressedIcon();

                if(altIcon == null) {

                    // Use selected icon

                    altIcon = b.getSelectedIcon();

                }

            } else if(model.isSelected()) {

                if(b.isRolloverEnabled() && model.isRollover()) {

                        altIcon = b.getRolloverSelectedIcon();

                        if (altIcon == null) {

                                altIcon = b.getSelectedIcon();

                        }

                } else {

                        altIcon = b.getSelectedIcon();

                }

            } else if(b.isRolloverEnabled() && model.isRollover()) {

                altIcon = b.getRolloverIcon();

            }

            if(altIcon == null) {

                altIcon = b.getIcon();

            }

            altIcon.paintIcon(c, g, iconRect.x, iconRect.y);

        } else {

            getDefaultIcon().paintIcon(c, g, iconRect.x, iconRect.y);

        }

        // Draw the Text

        if(text != null) {

            View v = (View) c.getClientProperty(BasicHTML.propertyKey);

            if (v != null) {

                v.paint(g, textRect);

            } else {

               int mnemIndex = b.getDisplayedMnemonicIndex();

               if(model.isEnabled()) {

                   // *** paint the text normally

                   g.setColor(b.getForeground());

               } else {

                   // *** paint the text disabled

                   g.setColor(getDisabledTextColor());

               }

               SwingUtilities2.drawStringUnderlineCharAt(c,g,text,

                       mnemIndex, textRect.x, textRect.y + fm.getAscent());

           }

           if(b.hasFocus() && b.isFocusPainted() &&

              textRect.width > 0 && textRect.height > 0 ) {

               paintFocus(g,textRect,size);

           }

        }

    }

    protected void paintFocus(Graphics g, Rectangle t, Dimension d){

        g.setColor(getFocusColor());

        g.drawRect(t.x-1, t.y-1, t.width+1, t.height+1);

    }

}