/*

 * Copyright (c) 2011, 2015, 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 apple.laf;

import java.security.AccessController;

import apple.laf.JRSUIConstants.Hit;

import apple.laf.JRSUIConstants.ScrollBarPart;

import com.apple.laf.AquaImageFactory.NineSliceMetrics;

import sun.security.action.GetPropertyAction;

public final class JRSUIUtils {

    static boolean isLeopard = isMacOSXLeopard();

    static boolean isSnowLeopardOrBelow = isMacOSXSnowLeopardOrBelow();

    static boolean isMacOSXLeopard() {

        return isCurrentMacOSXVersion(5);

    }

    static boolean isMacOSXSnowLeopardOrBelow() {

        return currentMacOSXVersionMatchesGivenVersionRange(6, true, true, false);

    }

    static boolean isCurrentMacOSXVersion(final int version) {

        return currentMacOSXVersionMatchesGivenVersionRange(version, true, false, false);

    }

    static boolean currentMacOSXVersionMatchesGivenVersionRange(

            final int version, final boolean inclusive,

            final boolean matchBelow, final boolean matchAbove) {

        // split the "10.x.y" version number

        String osVersion = AccessController.doPrivileged(new GetPropertyAction("os.version"));

        String[] fragments = osVersion.split("\\.");

        // sanity check the "10." part of the version

        if (!fragments[0].equals("10")) return false;

        if (fragments.length < 2) return false;

        // check if os.version matches the given version using the given match method

        try {

            int minorVers = Integer.parseInt(fragments[1]);

            if (inclusive && minorVers == version) return true;

            if (matchBelow && minorVers < version) return true;

            if (matchAbove && minorVers > version) return true;

        } catch (NumberFormatException e) {

            // was not an integer

        }

        return false;

    }

    public static class TabbedPane {

        public static boolean useLegacyTabs() {

            return isLeopard;

        }

        public static boolean shouldUseTabbedPaneContrastUI() {

            return !isSnowLeopardOrBelow;

        }

    }

    public static class InternalFrame {

        public static boolean shouldUseLegacyBorderMetrics() {

            return isSnowLeopardOrBelow;

        }

    }

    public static class Tree {

        public static boolean useLegacyTreeKnobs() {

            return isLeopard;

        }

    }

    public static class ScrollBar {

        private static native boolean shouldUseScrollToClick();

        public static boolean useScrollToClick() {

            return shouldUseScrollToClick();

        }

        public static void getPartBounds(final double[] rect,

                                         final JRSUIControl control,

                                         final int x, final int y, final int w,

                                         final int h,

                                         final ScrollBarPart part) {

            control.getPartBounds(rect, x, y, w, h, part.ordinal);

        }

        public static double getNativeOffsetChange(final JRSUIControl control,

                                                   final int x, final int y,

                                                   final int w, final int h,

                                                   final int offset,

                                                   final int visibleAmount,

                                                   final int extent) {

            return control.getScrollBarOffsetChange(x, y, w, h, offset,

                                                    visibleAmount, extent);

        }

    }

    public static class Images {

        public static boolean shouldUseLegacySecurityUIPath() {

            return isSnowLeopardOrBelow;

        }

    }

    public static class HitDetection {

        public static Hit getHitForPoint(final JRSUIControl control,

                                         final int x, final int y, final int w,

                                         final int h, final int hitX,

                                         final int hitY) {

            return control.getHitForPoint(x, y, w, h, hitX, hitY);

        }

    }

    public interface NineSliceMetricsProvider {

        public NineSliceMetrics getNineSliceMetricsForState(JRSUIState state);

    }

}