/*

 * Copyright (c) 2001, 2004, 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 com.sun.imageio.plugins.png;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

import java.util.ListResourceBundle;

import javax.imageio.ImageTypeSpecifier;

import javax.imageio.metadata.IIOMetadataFormat;

import javax.imageio.metadata.IIOMetadataFormatImpl;

public class PNGMetadataFormat extends IIOMetadataFormatImpl {

    private static IIOMetadataFormat instance = null;

    private static String VALUE_0 = "0";

    private static String VALUE_1 = "1";

    private static String VALUE_12 = "12";

    private static String VALUE_23 = "23";

    private static String VALUE_31 = "31";

    private static String VALUE_59 = "59";

    private static String VALUE_60 = "60";

    private static String VALUE_255 = "255";

    private static String VALUE_MAX_16 = "65535"; // 2^16 - 1

    private static String VALUE_MAX_32 = "2147483647"; // 2^32 - 1

    private PNGMetadataFormat() {

        super(PNGMetadata.nativeMetadataFormatName,

              CHILD_POLICY_SOME);

        // root -> IHDR

        addElement("IHDR", PNGMetadata.nativeMetadataFormatName,

                   CHILD_POLICY_EMPTY);

        addAttribute("IHDR", "width",

                     DATATYPE_INTEGER, true, null,

                     VALUE_1, VALUE_MAX_32, true, true);

        addAttribute("IHDR", "height",

                     DATATYPE_INTEGER, true, null,

                     VALUE_1, VALUE_MAX_32, true, true);

        addAttribute("IHDR", "bitDepth",

                     DATATYPE_INTEGER, true, null,

                     Arrays.asList(PNGMetadata.IHDR_bitDepths));

        String[] colorTypes = {

            "Grayscale", "RGB", "Palette", "GrayAlpha", "RGBAlpha"

        };

        addAttribute("IHDR", "colorType",

                     DATATYPE_STRING, true, null,

                     Arrays.asList(colorTypes));

        addAttribute("IHDR", "compressionMethod",

                     DATATYPE_STRING, true, null,

                     Arrays.asList(PNGMetadata.IHDR_compressionMethodNames));

        addAttribute("IHDR", "filterMethod",

                     DATATYPE_STRING, true, null,

                     Arrays.asList(PNGMetadata.IHDR_filterMethodNames));

        addAttribute("IHDR", "interlaceMethod",

                     DATATYPE_STRING, true, null,

                     Arrays.asList(PNGMetadata.IHDR_interlaceMethodNames));

        // root -> PLTE

        addElement("PLTE", PNGMetadata.nativeMetadataFormatName,

                   1, 256);

        // root -> PLTE -> PLTEEntry

        addElement("PLTEEntry", "PLTE",

                   CHILD_POLICY_EMPTY);

        addAttribute("PLTEEntry", "index",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        addAttribute("PLTEEntry", "red",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        addAttribute("PLTEEntry", "green",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        addAttribute("PLTEEntry", "blue",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        // root -> bKGD

        addElement("bKGD", PNGMetadata.nativeMetadataFormatName,

                   CHILD_POLICY_CHOICE);

        // root -> bKGD -> bKGD_Grayscale

        addElement("bKGD_Grayscale", "bKGD",

                   CHILD_POLICY_EMPTY);

        addAttribute("bKGD_Grayscale", "gray",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_16, true, true);

        // root -> bKGD -> bKGD_RGB

        addElement("bKGD_RGB", "bKGD",

                   CHILD_POLICY_EMPTY);

        addAttribute("bKGD_RGB", "red",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_16, true, true);

        addAttribute("bKGD_RGB", "green",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_16, true, true);

        addAttribute("bKGD_RGB", "blue",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_16, true, true);

        // root -> bKGD -> bKGD_Palette

        addElement("bKGD_Palette", "bKGD",

                   CHILD_POLICY_EMPTY);

        addAttribute("bKGD_Palette", "index",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        // root -> cHRM

        addElement("cHRM", PNGMetadata.nativeMetadataFormatName,

                   CHILD_POLICY_EMPTY);

        addAttribute("cHRM", "whitePointX",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_16, true, true);

        addAttribute("cHRM", "whitePointY",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_16, true, true);

        addAttribute("cHRM", "redX",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_16, true, true);

        addAttribute("cHRM", "redY",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_16, true, true);

        addAttribute("cHRM", "greenX",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_16, true, true);

        addAttribute("cHRM", "greenY",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_16, true, true);

        addAttribute("cHRM", "blueX",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_16, true, true);

        addAttribute("cHRM", "blueY",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_16, true, true);

        // root -> gAMA

        addElement("gAMA", PNGMetadata.nativeMetadataFormatName,

                   CHILD_POLICY_EMPTY);

        addAttribute("gAMA", "value",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_32, true, true);

        // root -> hIST

        addElement("hIST", PNGMetadata.nativeMetadataFormatName,

                   1, 256);

        // root -> hISTEntry

        addElement("hISTEntry", "hIST",

                   CHILD_POLICY_EMPTY);

        addAttribute("hISTEntry", "index",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        addAttribute("hISTEntry", "value",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_16, true, true);

        // root -> iCCP

        addElement("iCCP", PNGMetadata.nativeMetadataFormatName,

                   CHILD_POLICY_EMPTY);

        addAttribute("iCCP", "profileName",

                     DATATYPE_STRING, true, null);

        addAttribute("iCCP", "compressionMethod",

                     DATATYPE_STRING, true, null,

                     Arrays.asList(PNGMetadata.iCCP_compressionMethodNames));

        addObjectValue("iCCP", byte.class, 0, Integer.MAX_VALUE);

        // root -> iTXt

        addElement("iTXt", PNGMetadata.nativeMetadataFormatName,

                   1, Integer.MAX_VALUE);

        // root -> iTXt -> iTXtEntry

        addElement("iTXtEntry", "iTXt",

                   CHILD_POLICY_EMPTY);

        addAttribute("iTXtEntry", "keyword",

                     DATATYPE_STRING, true, null);

        addBooleanAttribute("iTXtEntry", "compressionFlag",

                            false, false);

        addAttribute("iTXtEntry", "compressionMethod",

                     DATATYPE_STRING, true, null);

        addAttribute("iTXtEntry", "languageTag",

                     DATATYPE_STRING, true, null);

        addAttribute("iTXtEntry", "translatedKeyword",

                     DATATYPE_STRING, true, null);

        addAttribute("iTXtEntry", "text",

                     DATATYPE_STRING, true, null);

        // root -> pHYS

        addElement("pHYS", PNGMetadata.nativeMetadataFormatName,

                   CHILD_POLICY_EMPTY);

        addAttribute("pHYS", "pixelsPerUnitXAxis",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_32, true, true);

        addAttribute("pHYS", "pixelsPerUnitYAxis",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_32, true, true);

        addAttribute("pHYS", "unitSpecifier",

                     DATATYPE_STRING, true, null,

                     Arrays.asList(PNGMetadata.unitSpecifierNames));

        // root -> sBIT

        addElement("sBIT", PNGMetadata.nativeMetadataFormatName,

                   CHILD_POLICY_CHOICE);

        // root -> sBIT -> sBIT_Grayscale

        addElement("sBIT_Grayscale", "sBIT",

                   CHILD_POLICY_EMPTY);

        addAttribute("sBIT_Grayscale", "gray",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        // root -> sBIT -> sBIT_GrayAlpha

        addElement("sBIT_GrayAlpha", "sBIT",

                   CHILD_POLICY_EMPTY);

        addAttribute("sBIT_GrayAlpha", "gray",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        addAttribute("sBIT_GrayAlpha", "alpha",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        // root -> sBIT -> sBIT_RGB

        addElement("sBIT_RGB", "sBIT",

                   CHILD_POLICY_EMPTY);

        addAttribute("sBIT_RGB", "red",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        addAttribute("sBIT_RGB", "green",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        addAttribute("sBIT_RGB", "blue",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        // root -> sBIT -> sBIT_RGBAlpha

        addElement("sBIT_RGBAlpha", "sBIT",

                   CHILD_POLICY_EMPTY);

        addAttribute("sBIT_RGBAlpha", "red",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        addAttribute("sBIT_RGBAlpha", "green",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        addAttribute("sBIT_RGBAlpha", "blue",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        addAttribute("sBIT_RGBAlpha", "alpha",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        // root -> sBIT -> sBIT_Palette

        addElement("sBIT_Palette", "sBIT",

                   CHILD_POLICY_EMPTY);

        addAttribute("sBIT_Palette", "red",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        addAttribute("sBIT_Palette", "green",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        addAttribute("sBIT_Palette", "blue",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        // root -> sPLT

        addElement("sPLT", PNGMetadata.nativeMetadataFormatName,

                   1, 256);

        // root -> sPLT -> sPLTEntry

        addElement("sPLTEntry", "sPLT",

                   CHILD_POLICY_EMPTY);

        addAttribute("sPLTEntry", "index",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        addAttribute("sPLTEntry", "red",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        addAttribute("sPLTEntry", "green",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        addAttribute("sPLTEntry", "blue",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        addAttribute("sPLTEntry", "alpha",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        // root -> sRGB

        addElement("sRGB", PNGMetadata.nativeMetadataFormatName,

                   CHILD_POLICY_EMPTY);

        addAttribute("sRGB", "renderingIntent",

                     DATATYPE_STRING, true, null,

                     Arrays.asList(PNGMetadata.renderingIntentNames));

        // root -> tEXt

        addElement("tEXt", PNGMetadata.nativeMetadataFormatName,

                   1, Integer.MAX_VALUE);

        // root -> tEXt -> tEXtEntry

        addElement("tEXtEntry", "tEXt",

                   CHILD_POLICY_EMPTY);

        addAttribute("tEXtEntry", "keyword",

                     DATATYPE_STRING, true, null);

        addAttribute("tEXtEntry", "value",

                     DATATYPE_STRING, true, null);

        // root -> tIME

        addElement("tIME", PNGMetadata.nativeMetadataFormatName,

                   CHILD_POLICY_EMPTY);

        addAttribute("tIME", "year",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_16, true, true);

        addAttribute("tIME", "month",

                     DATATYPE_INTEGER, true, null,

                     VALUE_1, VALUE_12, true, true);

        addAttribute("tIME", "day",

                     DATATYPE_INTEGER, true, null,

                     VALUE_1, VALUE_31, true, true);

        addAttribute("tIME", "hour",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_23, true, true);

        addAttribute("tIME", "minute",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_59, true, true);

        addAttribute("tIME", "second",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_60, true, true);

        // root -> tRNS

        addElement("tRNS", PNGMetadata.nativeMetadataFormatName,

                   CHILD_POLICY_CHOICE);

        // root -> tRNS -> tRNS_Grayscale

        addElement("tRNS_Grayscale", "tRNS",

                   CHILD_POLICY_EMPTY);

        addAttribute("tRNS_Grayscale", "gray",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_16, true, true);

        // root -> tRNS -> tRNS_RGB

        addElement("tRNS_RGB", "tRNS",

                   CHILD_POLICY_EMPTY);

        addAttribute("tRNS_RGB", "red",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_16, true, true);

        addAttribute("tRNS_RGB", "green",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_16, true, true);

        addAttribute("tRNS_RGB", "blue",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_MAX_16, true, true);

        // root -> tRNS -> tRNS_Palette

        addElement("tRNS_Palette", "tRNS",

                   CHILD_POLICY_EMPTY);

        addAttribute("tRNS_Palette", "index",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        addAttribute("tRNS_Palette", "alpha",

                     DATATYPE_INTEGER, true, null,

                     VALUE_0, VALUE_255, true, true);

        // root -> zTXt

        addElement("zTXt", PNGMetadata.nativeMetadataFormatName,

                   1, Integer.MAX_VALUE);

        // root -> zTXt -> zTXtEntry

        addElement("zTXtEntry", "zTXt",

                   CHILD_POLICY_EMPTY);

        addAttribute("zTXtEntry", "keyword",

                     DATATYPE_STRING, true, null);

        addAttribute("zTXtEntry", "compressionMethod",

                     DATATYPE_STRING, true, null,

                     Arrays.asList(PNGMetadata.zTXt_compressionMethodNames));

        addAttribute("zTXtEntry", "text",

                     DATATYPE_STRING, true, null);

        // root -> UnknownChunks

        addElement("UnknownChunks", PNGMetadata.nativeMetadataFormatName,

                   1, Integer.MAX_VALUE);

        // root -> UnknownChunks -> UnknownChunk

        addElement("UnknownChunk", "UnknownChunks",

                   CHILD_POLICY_EMPTY);

        addAttribute("UnknownChunk", "type",

                     DATATYPE_STRING, true, null);

        addObjectValue("UnknownChunk", byte.class, 0, Integer.MAX_VALUE);

    }

    public boolean canNodeAppear(String elementName,

                                 ImageTypeSpecifier imageType) {

        return true;

    }

    public static synchronized IIOMetadataFormat getInstance() {

        if (instance == null) {

            instance = new PNGMetadataFormat();

        }

        return instance;

    }

}