I implemented some additional mapping methods in SystemFlavorMap. Now almost all prerequisites for the major getter/setter methods are present.
2005-11-30 Jan Roehrich <[EMAIL PROTECTED]>
* java/awt/datatransfer/SystemFlavorMap.java
(isJavaMIMEType): implemented.
(GNU_JAVA_MIME_PREFIX): added constant.
(decodeJavaMIMEType): implemented.
(encodeJavaMIMEType): implemented.
(encodeDataFlavor): implemented.
Index: SystemFlavorMap.java
===================================================================
RCS file: /cvsroot/classpath/classpath/java/awt/datatransfer/SystemFlavorMap.java,v
retrieving revision 1.9
diff -u -r1.9 SystemFlavorMap.java
--- SystemFlavorMap.java 30 Nov 2005 00:59:57 -0000 1.9
+++ SystemFlavorMap.java 30 Nov 2005 01:44:52 -0000
@@ -62,6 +62,11 @@
private static final Map systemFlavorMaps = new WeakHashMap();
/**
+ * Constant which is used to prefix encode Java MIME types.
+ */
+ private static final String GNU_JAVA_MIME_PREFIX = "gnu.java:";
+
+ /**
* This map maps native <code>String</code>s to lists of
* <code>DataFlavor</code>s
*/
@@ -72,7 +77,7 @@
* <code>String</code>s
*/
private HashMap flavorToNativeMap = new HashMap();
-
+
/**
* Private constructor.
*/
@@ -141,36 +146,90 @@
}
/**
- * Returns the native type name for the given java mime type.
+ * Encodes a MIME type for use as a <code>String</code> native. The format
+ * of an encoded representation of a MIME type is implementation-dependent.
+ * The only restrictions are:
+ * <ul>
+ * <li>The encoded representation is <code>null</code> if and only if the
+ * MIME type <code>String</code> is <code>null</code>.</li>
+ * <li>The encoded representations for two non-<code>null</code> MIME type
+ * <code>String</code>s are equal if and only if these <code>String</code>s
+ * are equal according to <code>String.equals(Object)</code>.</li>
+ * </ul>
+ * <p>
+ * The present implementation of this method returns the specified MIME
+ * type <code>String</code> prefixed with <code>gnu.java:</code>.
+ *
+ * @param mime the MIME type to encode
+ * @return the encoded <code>String</code>, or <code>null</code> if
+ * mimeType is <code>null</code>
*/
public static String encodeJavaMIMEType (String mime)
{
- return null;
+ if (mime != null)
+ return GNU_JAVA_MIME_PREFIX + mime;
+ else
+ return null;
}
/**
- * Returns the native type name for the given data flavor.
+ * Encodes a <code>DataFlavor</code> for use as a <code>String</code>
+ * native. The format of an encoded <code>DataFlavor</code> is
+ * implementation-dependent. The only restrictions are:
+ * <ul>
+ * <li>The encoded representation is <code>null</code> if and only if the
+ * specified <code>DataFlavor</code> is <code>null</code> or its MIME type
+ * <code>String</code> is <code>null</code>.</li>
+ * <li>The encoded representations for two non-<code>null</code>
+ * <code>DataFlavor</code>s with non-<code>null</code> MIME type
+ * <code>String</code>s are equal if and only if the MIME type
+ * <code>String</code>s of these <code>DataFlavor</code>s are equal
+ * according to <code>String.equals(Object)</code>.</li>
+ * </ul>
+ * <p>
+ * The present implementation of this method returns the MIME type
+ * <code>String</code> of the specified <code>DataFlavor</code> prefixed
+ * with <code>gnu.java:</code>.
+ *
+ * @param df the <code>DataFlavor</code> to encode
+ * @return the encoded <code>String</code>, or <code>null</code> if
+ * flav is <code>null</code> or has a <code>null</code> MIME type
*/
public static String encodeDataFlavor (DataFlavor df)
{
- return null;
+ if (df != null)
+ {
+ return encodeJavaMIMEType(df.getMimeType());
+ }
+ else
+ return null;
}
/**
* Returns true if the native type name can be represented as
- * a java mime type.
+ * a java mime type. Returns <code>false</code> if parameter is
+ * <code>null</code>.
*/
public static boolean isJavaMIMEType (String name)
{
- return false;
+ return (name != null && name.startsWith(GNU_JAVA_MIME_PREFIX));
}
/**
- * Returns the java mime type for the given the native type name.
+ * Decodes a <code>String</code> native for use as a Java MIME type.
+ *
+ * @param name the <code>String</code> to decode
+ * @return the decoded Java MIME type, or <code>null</code> if nat
+ * is not an encoded <code>String</code> native
*/
public static String decodeJavaMIMEType (String name)
{
- return null;
+ if (isJavaMIMEType(name))
+ {
+ return name.substring(GNU_JAVA_MIME_PREFIX.length());
+ }
+ else
+ return null;
}
/**
@@ -188,6 +247,20 @@
return null;
}
+ /**
+ * Returns a List of <code>DataFlavors</code> to which the specified
+ * <code>String</code> native can be translated by the data transfer
+ * subsystem. The <code>List</code> will be sorted from best
+ * <code>DataFlavor</code> to worst. That is, the first <code>DataFlavor
+ * </code> will best reflect data in the specified native to a Java
+ * application.
+ * <p>
+ * If the specified native is previously unknown to the data transfer
+ * subsystem, and that native has been properly encoded, then invoking
+ * this method will establish a mapping in both directions between the
+ * specified native and a DataFlavor whose MIME type is a decoded
+ * version of the native.
+ */
public List getFlavorsForNative (String nat)
{
throw new Error ("Not implemented");
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