/*
 * This file is part of WebLookAndFeel library.
 *
 * WebLookAndFeel library is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * WebLookAndFeel library 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with WebLookAndFeel library.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.alee.laf.menu;

import com.alee.extended.layout.ToolbarLayout;
import com.alee.global.StyleConstants;
import com.alee.laf.WebLookAndFeel;
import com.alee.utils.GraphicsUtils;
import com.alee.utils.LafUtils;
import com.alee.utils.SwingUtils;
import com.alee.utils.laf.ShapeProvider;
import com.alee.utils.swing.BorderMethods;

import javax.swing.*;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.basic.BasicMenuBarUI;
import java.awt.*;
import java.awt.geom.Line2D;

/**
 * User: mgarin Date: 15.08.11 Time: 20:24
 */

public class WebMenuBarUI extends BasicMenuBarUI implements ShapeProvider, BorderMethods
{
    private boolean undecorated = WebMenuBarStyle.undecorated;
    private int round = WebMenuBarStyle.round;
    private int shadeWidth = WebMenuBarStyle.shadeWidth;
    private MenuBarStyle menuBarStyle = WebMenuBarStyle.menuBarStyle;
    private Color borderColor = WebMenuBarStyle.borderColor;

    @SuppressWarnings ("UnusedParameters")
    public static ComponentUI createUI ( final JComponent c )
    {
        return new WebMenuBarUI ();
    }

    @Override
    public void installUI ( final JComponent c )
    {
        super.installUI ( c );

        // Default settings
        SwingUtils.setOrientation ( menuBar );
        LookAndFeel.installProperty ( menuBar, WebLookAndFeel.OPAQUE_PROPERTY, Boolean.FALSE );
        menuBar.setLayout ( new ToolbarLayout ( 0 ) );

        // Updating border
        updateBorder ();
    }

    @Override
    public Shape provideShape ()
    {
        return LafUtils.getWebBorderShape ( menuBar, getShadeWidth (), getRound () );
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void updateBorder ()
    {
        // Preserve old borders
        if ( SwingUtils.isPreserveBorders ( menuBar ) )
        {
            return;
        }

        final Insets insets;
        if ( !undecorated )
        {
            if ( menuBarStyle.equals ( MenuBarStyle.attached ) )
            {
                insets = new Insets ( 0, 0, 1 + shadeWidth, 0 );
            }
            else
            {
                insets = new Insets ( 1 + shadeWidth, 1 + shadeWidth, 1 + shadeWidth, 1 + shadeWidth );
            }
        }
        else
        {
            insets = new Insets ( 0, 0, 0, 0 );
        }
        menuBar.setBorder ( LafUtils.createWebBorder ( insets ) );
    }

    public boolean isUndecorated ()
    {
        return undecorated;
    }

    public void setUndecorated ( final boolean undecorated )
    {
        this.undecorated = undecorated;
        updateBorder ();
    }

    public MenuBarStyle getMenuBarStyle ()
    {
        return menuBarStyle;
    }

    public void setMenuBarStyle ( final MenuBarStyle menuBarStyle )
    {
        this.menuBarStyle = menuBarStyle;
        updateBorder ();
    }

    public Color getBorderColor ()
    {
        return borderColor;
    }

    public void setBorderColor ( final Color borderColor )
    {
        this.borderColor = borderColor;
    }

    public int getRound ()
    {
        return round;
    }

    public void setRound ( final int round )
    {
        this.round = round;
    }

    public int getShadeWidth ()
    {
        return shadeWidth;
    }

    public void setShadeWidth ( final int shadeWidth )
    {
        this.shadeWidth = shadeWidth;
        updateBorder ();
    }

    @Override
    public void paint ( final Graphics g, final JComponent c )
    {
        if ( !undecorated )
        {
            final Graphics2D g2d = ( Graphics2D ) g;

            if ( menuBarStyle == MenuBarStyle.attached )
            {
                final Shape border =
                        new Line2D.Double ( 0, c.getHeight () - 1 - shadeWidth, c.getWidth () - 1, c.getHeight () - 1 - shadeWidth );

                GraphicsUtils.drawShade ( g2d, border, StyleConstants.shadeColor, shadeWidth );

                g2d.setPaint ( new GradientPaint ( 0, 0, StyleConstants.topBgColor, 0, c.getHeight (), new Color ( 235, 235, 235 ) ) );
                g2d.fillRect ( 0, 0, c.getWidth (), c.getHeight () - shadeWidth );

                g2d.setPaint ( borderColor );
                g2d.draw ( border );
            }
            else
            {
                LafUtils.drawWebStyle ( g2d, c, StyleConstants.shadeColor, shadeWidth, round, true, true, borderColor );
            }
        }
    }
}