Java DataFlavor.isRepresentationClassByteBuffer方法代码示例

import java.awt.datatransfer.DataFlavor; //导入方法依赖的package包/类
/**
 * Returns whether this flavor is a text type which supports the
 * 'charset' parameter.
 */
public static boolean isFlavorCharsetTextType(DataFlavor flavor) {
    // Although stringFlavor doesn't actually support the charset
    // parameter (because its primary MIME type is not "text"), it should
    // be treated as though it does. stringFlavor is semantically
    // equivalent to "text/plain" data.
    if (DataFlavor.stringFlavor.equals(flavor)) {
        return true;
    }

    if (!"text".equals(flavor.getPrimaryType()) ||
        !doesSubtypeSupportCharset(flavor))
    {
        return false;
    }

    Class rep_class = flavor.getRepresentationClass();

    if (flavor.isRepresentationClassReader() ||
        String.class.equals(rep_class) ||
        flavor.isRepresentationClassCharBuffer() ||
        char[].class.equals(rep_class))
    {
        return true;
    }

    if (!(flavor.isRepresentationClassInputStream() ||
          flavor.isRepresentationClassByteBuffer() ||
          byte[].class.equals(rep_class))) {
        return false;
    }

    String charset = flavor.getParameter("charset");

    return (charset != null)
        ? DataTransferer.isEncodingSupported(charset)
        : true; // null equals default encoding which is always supported
}
 

import java.awt.datatransfer.DataFlavor; //导入方法依赖的package包/类
/**
 * Returns whether this flavor is a text type which does not support the
 * 'charset' parameter.
 */
public static boolean isFlavorNoncharsetTextType(DataFlavor flavor) {
    if (!"text".equals(flavor.getPrimaryType()) ||
        doesSubtypeSupportCharset(flavor))
    {
        return false;
    }

    return (flavor.isRepresentationClassInputStream() ||
            flavor.isRepresentationClassByteBuffer() ||
            byte[].class.equals(flavor.getRepresentationClass()));
}
 

import java.awt.datatransfer.DataFlavor; //导入方法依赖的package包/类
/**
 * Returns whether this flavor is a text type which supports the 'charset'
 * parameter.
 */
public static boolean isFlavorCharsetTextType(DataFlavor flavor) {
    // Although stringFlavor doesn't actually support the charset
    // parameter (because its primary MIME type is not "text"), it should
    // be treated as though it does. stringFlavor is semantically
    // equivalent to "text/plain" data.
    if (DataFlavor.stringFlavor.equals(flavor)) {
        return true;
    }

    if (!"text".equals(flavor.getPrimaryType()) ||
            !doesSubtypeSupportCharset(flavor))
    {
        return false;
    }

    Class<?> rep_class = flavor.getRepresentationClass();

    if (flavor.isRepresentationClassReader() ||
            String.class.equals(rep_class) ||
            flavor.isRepresentationClassCharBuffer() ||
            char[].class.equals(rep_class))
    {
        return true;
    }

    if (!(flavor.isRepresentationClassInputStream() ||
            flavor.isRepresentationClassByteBuffer() ||
            byte[].class.equals(rep_class))) {
        return false;
    }

    String charset = flavor.getParameter("charset");

    // null equals default encoding which is always supported
    return (charset == null) || isEncodingSupported(charset);
}
 

import java.awt.datatransfer.DataFlavor; //导入方法依赖的package包/类
/**
 * Returns whether this flavor is a text type which does not support the
 * 'charset' parameter.
 */
public static boolean isFlavorNoncharsetTextType(DataFlavor flavor) {
    if (!"text".equals(flavor.getPrimaryType()) || doesSubtypeSupportCharset(flavor)) {
        return false;
    }

    return (flavor.isRepresentationClassInputStream() ||
            flavor.isRepresentationClassByteBuffer() ||
            byte[].class.equals(flavor.getRepresentationClass()));
}
 

import java.awt.datatransfer.DataFlavor; //导入方法依赖的package包/类
public LinkedHashSet<String> getPlatformMappingsForFlavor(DataFlavor df) {
    LinkedHashSet<String> natives = new LinkedHashSet<>(1);

    if (df == null) {
        return natives;
    }

    String charset = df.getParameter("charset");
    String baseType = df.getPrimaryType() + "/" + df.getSubType();
    String mimeType = baseType;

    if (charset != null && DataTransferer.isFlavorCharsetTextType(df)) {
        mimeType += ";charset=" + charset;
    }

    // Add a mapping to the MIME native whenever the representation class
    // doesn't require translation.
    if (df.getRepresentationClass() != null &&
        (df.isRepresentationClassInputStream() ||
         df.isRepresentationClassByteBuffer() ||
         byte[].class.equals(df.getRepresentationClass()))) {
        natives.add(mimeType);
    }

    if (DataFlavor.imageFlavor.equals(df)) {
        String[] mimeTypes = ImageIO.getWriterMIMETypes();
        if (mimeTypes != null) {
            for (int i = 0; i < mimeTypes.length; i++) {
                Iterator writers =
                    ImageIO.getImageWritersByMIMEType(mimeTypes[i]);

                while (writers.hasNext()) {
                    ImageWriter imageWriter = (ImageWriter)writers.next();
                    ImageWriterSpi writerSpi =
                        imageWriter.getOriginatingProvider();

                    if (writerSpi != null &&
                        writerSpi.canEncodeImage(getDefaultImageTypeSpecifier())) {
                        natives.add(mimeTypes[i]);
                        break;
                    }
                }
            }
        }
    } else if (DataTransferer.isFlavorCharsetTextType(df)) {
        // stringFlavor is semantically equivalent to the standard
        // "text/plain" MIME type.
        if (DataFlavor.stringFlavor.equals(df)) {
            baseType = "text/plain";
        }

        for (String encoding : DataTransferer.standardEncodings()) {
            if (!encoding.equals(charset)) {
                natives.add(baseType + ";charset=" + encoding);
            }
        }

        // Add a MIME format without specified charset.
        if (!natives.contains(baseType)) {
            natives.add(baseType);
        }
    }

    return natives;
}
 

import java.awt.datatransfer.DataFlavor; //导入方法依赖的package包/类
@Override
public LinkedHashSet<String> getPlatformMappingsForFlavor(DataFlavor df) {
    LinkedHashSet<String> natives = new LinkedHashSet<>(1);

    if (df == null) {
        return natives;
    }

    String charset = df.getParameter("charset");
    String baseType = df.getPrimaryType() + "/" + df.getSubType();
    String mimeType = baseType;

    if (charset != null && DataFlavorUtil.isFlavorCharsetTextType(df)) {
        mimeType += ";charset=" + charset;
    }

    // Add a mapping to the MIME native whenever the representation class
    // doesn't require translation.
    if (df.getRepresentationClass() != null &&
        (df.isRepresentationClassInputStream() ||
         df.isRepresentationClassByteBuffer() ||
         byte[].class.equals(df.getRepresentationClass()))) {
        natives.add(mimeType);
    }

    if (DataFlavor.imageFlavor.equals(df)) {
        String[] mimeTypes = ImageIO.getWriterMIMETypes();
        if (mimeTypes != null) {
            for (String mime : mimeTypes) {
                Iterator<ImageWriter> writers = ImageIO.getImageWritersByMIMEType(mime);
                while (writers.hasNext()) {
                    ImageWriter imageWriter = writers.next();
                    ImageWriterSpi writerSpi = imageWriter.getOriginatingProvider();

                    if (writerSpi != null &&
                            writerSpi.canEncodeImage(getDefaultImageTypeSpecifier())) {
                        natives.add(mime);
                        break;
                    }
                }
            }
        }
    } else if (DataFlavorUtil.isFlavorCharsetTextType(df)) {
        // stringFlavor is semantically equivalent to the standard
        // "text/plain" MIME type.
        if (DataFlavor.stringFlavor.equals(df)) {
            baseType = "text/plain";
        }

        for (String encoding : DataFlavorUtil.standardEncodings()) {
            if (!encoding.equals(charset)) {
                natives.add(baseType + ";charset=" + encoding);
            }
        }

        // Add a MIME format without specified charset.
        if (!natives.contains(baseType)) {
            natives.add(baseType);
        }
    }

    return natives;
}