/*

 * Copyright (c) 2002, 2014, 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 javax.swing.plaf.synth;

import java.awt.*;

import javax.swing.*;

import javax.swing.plaf.UIResource;

/**

 * JButton object that draws a scaled Arrow in one of the cardinal directions.

 *

 * @author Scott Violet

 */

@SuppressWarnings("serial") // Superclass is not serializable across versions

class SynthArrowButton extends JButton implements SwingConstants, UIResource {

    private int direction;

    public SynthArrowButton(int direction) {

        super();

        super.setFocusable(false);

        setDirection(direction);

        setDefaultCapable(false);

    }

    public String getUIClassID() {

        return "ArrowButtonUI";

    }

    public void updateUI() {

        setUI(new SynthArrowButtonUI());

    }

    public void setDirection(int dir) {

        direction = dir;

        putClientProperty("__arrow_direction__", Integer.valueOf(dir));

        repaint();

    }

    public int getDirection() {

        return direction;

    }

    public void setFocusable(boolean focusable) {}

    private static class SynthArrowButtonUI extends SynthButtonUI {

        protected void installDefaults(AbstractButton b) {

            super.installDefaults(b);

            updateStyle(b);

        }

        protected void paint(SynthContext context, Graphics g) {

            SynthArrowButton button = (SynthArrowButton)context.

                                      getComponent();

            context.getPainter().paintArrowButtonForeground(

                context, g, 0, 0, button.getWidth(), button.getHeight(),

                button.getDirection());

        }

        void paintBackground(SynthContext context, Graphics g, JComponent c) {

            context.getPainter().paintArrowButtonBackground(context, g, 0, 0,

                                                c.getWidth(), c.getHeight());

        }

        public void paintBorder(SynthContext context, Graphics g, int x,

                                int y, int w, int h) {

            context.getPainter().paintArrowButtonBorder(context, g, x, y, w,h);

        }

        public Dimension getMinimumSize() {

            return new Dimension(5, 5);

        }

        public Dimension getMaximumSize() {

            return new Dimension(Integer.MAX_VALUE, Integer.MAX_VALUE);

        }

        public Dimension getPreferredSize(JComponent c) {

            SynthContext context = getContext(c);

            Dimension dim = null;

            if (context.getComponent().getName() == "ScrollBar.button") {

                // ScrollBar arrow buttons can be non-square when

                // the ScrollBar.squareButtons property is set to FALSE

                // and the ScrollBar.buttonSize property is non-null

                dim = (Dimension)

                    context.getStyle().get(context, "ScrollBar.buttonSize");

            }

            if (dim == null) {

                // For all other cases (including Spinner, ComboBox), we will

                // fall back on the single ArrowButton.size value to create

                // a square return value

                int size =

                    context.getStyle().getInt(context, "ArrowButton.size", 16);

                dim = new Dimension(size, size);

            }

            // handle scaling for sizeVarients for special case components. The

            // key "JComponent.sizeVariant" scales for large/small/mini

            // components are based on Apples LAF

            Container parent = context.getComponent().getParent();

            if (parent instanceof JComponent && !(parent instanceof JComboBox)) {

                Object scaleKey = ((JComponent)parent).

                                    getClientProperty("JComponent.sizeVariant");

                if (scaleKey != null){

                    if ("large".equals(scaleKey)){

                        dim = new Dimension(

                                (int)(dim.width * 1.15),

                                (int)(dim.height * 1.15));

                    } else if ("small".equals(scaleKey)){

                        dim = new Dimension(

                                (int)(dim.width * 0.857),

                                (int)(dim.height * 0.857));

                    } else if ("mini".equals(scaleKey)){

                        dim = new Dimension(

                                (int)(dim.width * 0.714),

                                (int)(dim.height * 0.714));

                    }

                }

            }

            return dim;

        }

    }

}