1 files changed, 126 insertions, 0 deletions
diff --git a/awt/javax/imageio/spi/ImageInputStreamSpi.java b/awt/javax/imageio/spi/ImageInputStreamSpi.java
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+++ b/awt/javax/imageio/spi/ImageInputStreamSpi.java
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+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one or more
+ *  contributor license agreements.  See the NOTICE file distributed with
+ *  this work for additional information regarding copyright ownership.
+ *  The ASF licenses this file to You under the Apache License, Version 2.0
+ *  (the "License"); you may not use this file except in compliance with
+ *  the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+/**
+ * @author Rustem V. Rafikov
+ * @version $Revision: 1.3 $
+ */
+package javax.imageio.spi;
+
+import java.io.File;
+import java.io.IOException;
+import javax.imageio.stream.ImageInputStream;
+
+/**
+ * The ImageInputStreamSpi abstract class is a service provider 
+ * interface (SPI) for ImageInputStreams.  
+ */
+public abstract class ImageInputStreamSpi extends IIOServiceProvider implements
+        RegisterableService {
+    
+    /** The input class. */
+    protected Class<?> inputClass;
+
+    /**
+     * Instantiates a new ImageInputStreamSpi.
+     */
+    protected ImageInputStreamSpi() {
+        throw new UnsupportedOperationException("Not supported yet");
+    }
+
+    /**
+     * Instantiates a new ImageInputStreamSpi.
+     * 
+     * @param vendorName the vendor name.
+     * @param version the version.
+     * @param inputClass the input class.
+     */
+    public ImageInputStreamSpi(String vendorName, String version, Class<?> inputClass) {
+        super(vendorName, version);
+        this.inputClass = inputClass;
+    }
+
+    /**
+     * Gets an input Class object that represents class or 
+     * interface that must be implemented by an input source.
+     * 
+     * @return the input class.
+     */
+    public Class<?> getInputClass() {
+        return inputClass;
+    }
+
+    /**
+     * Returns true if the ImageInputStream can use a cache 
+     * file. If this method returns false, the value of the 
+     * useCache parameter of createInputStreamInstance will 
+     * be ignored. The default implementation returns false.
+     * 
+     * @return true if the ImageInputStream can use a cache 
+     * file, false otherwise.
+     */
+    public boolean canUseCacheFile() {
+        return false; //-- def
+    }
+
+    /**
+     * Returns true if the ImageInputStream implementation 
+     * requires the use of a cache file. The default implementation 
+     * returns false.
+     * 
+     * @return true if the ImageInputStream implementation 
+     * requires the use of a cache file, false otherwise.
+     */
+    public boolean needsCacheFile() {
+        return false; // def
+    }
+
+    /**
+     * Creates the ImageInputStream associated with this 
+     * service provider. The input object should
+     * be an instance of the class returned by th getInputClass 
+     * method. This method uses the specified directory
+     * for the cache file if the useCache parameter is true. 
+     * 
+     * @param input the input Object.
+     * @param useCache the flag indicating if a cache file 
+     * is needed or not.
+     * @param cacheDir the cache directory.
+     * 
+     * @return the ImageInputStream.
+     * 
+     * @throws IOException Signals that an I/O exception has occurred.
+     */
+    public abstract ImageInputStream createInputStreamInstance(Object input, boolean useCache,
+            File cacheDir) throws IOException;
+
+    /**
+     * Creates the ImageInputStream associated with this 
+     * service provider. The input object should
+     * be an instance of the class returned by getInputClass 
+     * method. This method uses the default system directory
+     * for the cache file, if it is needed. 
+     * 
+     * @param input the input Object.
+     * 
+     * @return the ImageInputStream.
+     * 
+     * @throws IOException Signals that an I/O exception has occurred.
+     */
+    public ImageInputStream createInputStreamInstance(Object input) throws IOException {
+        return createInputStreamInstance(input, true, null);
+    }
+}