Initial Contribution
diff --git a/awt/javax/imageio/metadata/IIOMetadata.java b/awt/javax/imageio/metadata/IIOMetadata.java
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+++ b/awt/javax/imageio/metadata/IIOMetadata.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.
+ */
+package javax.imageio.metadata;
+
+import java.util.ArrayList;
+
+import org.apache.harmony.x.imageio.metadata.IIOMetadataUtils;
+import org.w3c.dom.Node;
+
+/**
+ * The Class IIOMetadata represents the metadata (bundled with an image)
+ * as a Dom-type tree.
+ */
+public abstract class IIOMetadata {
+
+ /** Whether the standard metadata format is supported. */
+ protected boolean standardFormatSupported;
+
+ /** The native metadata format name. */
+ protected String nativeMetadataFormatName;
+
+ /** The native metadata format class name. */
+ protected String nativeMetadataFormatClassName;
+
+ /** The extra metadata format names. */
+ protected String[] extraMetadataFormatNames;
+
+ /** The extra metadata format class names. */
+ protected String[] extraMetadataFormatClassNames;
+
+ /** The default controller. */
+ protected IIOMetadataController defaultController;
+
+ /** The controller. */
+ protected IIOMetadataController controller;
+
+ /**
+ * Instantiates a new IIOMetadata with no data set.
+ */
+ protected IIOMetadata() {}
+
+ /**
+ * Instantiates a new IIOMetadata with the specified data parameters.
+ *
+ * @param standardMetadataFormatSupported whether the standard metadata format is supported
+ * @param nativeMetadataFormatName the native metadata format name
+ * @param nativeMetadataFormatClassName the native metadata format class name
+ * @param extraMetadataFormatNames the extra metadata format names
+ * @param extraMetadataFormatClassNames the extra metadata format class names
+ */
+ protected IIOMetadata(boolean standardMetadataFormatSupported,
+ String nativeMetadataFormatName,
+ String nativeMetadataFormatClassName,
+ String[] extraMetadataFormatNames,
+ String[] extraMetadataFormatClassNames) {
+ standardFormatSupported = standardMetadataFormatSupported;
+ this.nativeMetadataFormatName = nativeMetadataFormatName;
+ this.nativeMetadataFormatClassName = nativeMetadataFormatClassName;
+ if (extraMetadataFormatNames == null) {
+ if (extraMetadataFormatClassNames != null) {
+ throw new IllegalArgumentException(
+ "extraMetadataFormatNames == null && extraMetadataFormatClassNames != null!"
+ );
+ }
+ } else {
+ if (extraMetadataFormatClassNames == null) {
+ throw new IllegalArgumentException(
+ "extraMetadataFormatNames != null && extraMetadataFormatClassNames == null!"
+ );
+ }
+ if (extraMetadataFormatNames.length == 0) {
+ throw new IllegalArgumentException("extraMetadataFormatNames.length == 0!");
+ }
+ if (extraMetadataFormatClassNames.length != extraMetadataFormatNames.length) {
+ throw new IllegalArgumentException(
+ "extraMetadataFormatClassNames.length != extraMetadataFormatNames.length!"
+ );
+ }
+ this.extraMetadataFormatNames = extraMetadataFormatNames.clone();
+ this.extraMetadataFormatClassNames = extraMetadataFormatClassNames.clone();
+ }
+ }
+
+ /**
+ * Gets the metadata as tree-type document.
+ *
+ * @param formatName the format name
+ *
+ * @return the node in tree format
+ */
+ public abstract Node getAsTree(String formatName);
+
+ /**
+ * Checks if the metadata is read only.
+ *
+ * @return true, if the metadata is read only.
+ */
+ public abstract boolean isReadOnly();
+
+ /**
+ * Merges the specified tree with this metadata tree.
+ *
+ * @param formatName the format of the specified tree
+ * @param root the root node of the metadata tree
+ *
+ * @throws IIOInvalidTreeException if the specified tree
+ * is incompatible with the this metadata tree.
+ */
+ public abstract void mergeTree(String formatName, Node root) throws IIOInvalidTreeException;
+
+ /**
+ * Resets the controller.
+ */
+ public abstract void reset();
+
+ /**
+ * Gets the controller associated with this metadata document.
+ *
+ * @return the controller
+ */
+ public IIOMetadataController getController() {
+ return controller;
+ }
+
+ /**
+ * Checks whether this metadata has a controller.
+ *
+ * @return true, if this metadata has a controller
+ */
+ public boolean hasController() {
+ return getController() != null;
+ }
+
+ /**
+ * Activate the controller.
+ *
+ * @return true, if successful
+ */
+ public boolean activateController() {
+ if (!hasController()) {
+ throw new IllegalStateException("hasController() == false!");
+ }
+ return getController().activate(this);
+ }
+
+ /**
+ * Gets the default controller.
+ *
+ * @return the default controller
+ */
+ public IIOMetadataController getDefaultController() {
+ return defaultController;
+ }
+
+ /**
+ * Gets the extra metadata format names.
+ *
+ * @return the extra metadata format names
+ */
+ public String[] getExtraMetadataFormatNames() {
+ return extraMetadataFormatNames == null ? null : extraMetadataFormatNames.clone();
+ }
+
+ /**
+ * Gets the metadata format.
+ *
+ * @param formatName the format name
+ *
+ * @return the metadata format
+ */
+ public IIOMetadataFormat getMetadataFormat(String formatName) {
+ return IIOMetadataUtils.instantiateMetadataFormat(
+ formatName,
+ standardFormatSupported,
+ nativeMetadataFormatName, nativeMetadataFormatClassName,
+ extraMetadataFormatNames, extraMetadataFormatClassNames
+ );
+ }
+
+ /**
+ * Gets the native metadata format name.
+ *
+ * @return the native metadata format name
+ */
+ public String getNativeMetadataFormatName() {
+ return nativeMetadataFormatName;
+ }
+
+ /**
+ * Checks if the standard metadata format is supported.
+ *
+ * @return true, if the standard metadata format is supported
+ */
+ public boolean isStandardMetadataFormatSupported() {
+ return standardFormatSupported;
+ }
+
+ /**
+ * Gets the metadata format names.
+ *
+ * @return the metadata format names
+ */
+ public String[] getMetadataFormatNames() {
+ ArrayList<String> res = new ArrayList<String>();
+
+ String nativeMetadataFormatName = getNativeMetadataFormatName();
+ boolean standardFormatSupported = isStandardMetadataFormatSupported();
+ String extraMetadataFormatNames[] = getExtraMetadataFormatNames();
+
+ if (standardFormatSupported) {
+ res.add(IIOMetadataFormatImpl.standardMetadataFormatName);
+ }
+ if (nativeMetadataFormatName != null) {
+ res.add(nativeMetadataFormatName);
+ }
+ if (extraMetadataFormatNames != null) {
+ for (String extraMetadataFormatName : extraMetadataFormatNames) {
+ res.add(extraMetadataFormatName);
+ }
+ }
+
+ return res.size() > 0 ? res.toArray(new String[0]) : null;
+ }
+
+ /**
+ * Gets the standard chroma node.
+ *
+ * @return the standard chroma node
+ */
+ protected IIOMetadataNode getStandardChromaNode() {
+ return null;
+ }
+
+ /**
+ * Gets the standard compression node.
+ *
+ * @return the standard compression node
+ */
+ protected IIOMetadataNode getStandardCompressionNode() {
+ return null;
+ }
+
+ /**
+ * Gets the standard data node.
+ *
+ * @return the standard data node
+ */
+ protected IIOMetadataNode getStandardDataNode() {
+ return null;
+ }
+
+ /**
+ * Gets the standard dimension node.
+ *
+ * @return the standard dimension node
+ */
+ protected IIOMetadataNode getStandardDimensionNode() {
+ return null;
+ }
+
+ /**
+ * Gets the standard document node.
+ *
+ * @return the standard document node
+ */
+ protected IIOMetadataNode getStandardDocumentNode() {
+ return null;
+ }
+
+ /**
+ * Gets the standard text node.
+ *
+ * @return the standard text node
+ */
+ protected IIOMetadataNode getStandardTextNode() {
+ return null;
+ }
+
+ /**
+ * Gets the standard tile node.
+ *
+ * @return the standard tile node
+ */
+ protected IIOMetadataNode getStandardTileNode() {
+ return null;
+ }
+
+ /**
+ * Gets the standard transparency node.
+ *
+ * @return the standard transparency node
+ */
+ protected IIOMetadataNode getStandardTransparencyNode() {
+ return null;
+ }
+
+ /**
+ * Gets the metadata as a tree in standard format.
+ *
+ * @return the metadata as a tree in standard format
+ */
+ protected final IIOMetadataNode getStandardTree() {
+ // Create root node
+ IIOMetadataNode root = new IIOMetadataNode(IIOMetadataFormatImpl.standardMetadataFormatName);
+
+ Node node;
+ if ((node = getStandardChromaNode()) != null) {
+ root.appendChild(node);
+ }
+ if ((node = getStandardCompressionNode()) != null) {
+ root.appendChild(node);
+ }
+ if ((node = getStandardDataNode()) != null) {
+ root.appendChild(node);
+ }
+ if ((node = getStandardDimensionNode()) != null) {
+ root.appendChild(node);
+ }
+ if ((node = getStandardDocumentNode()) != null) {
+ root.appendChild(node);
+ }
+ if ((node = getStandardTextNode()) != null) {
+ root.appendChild(node);
+ }
+ if ((node = getStandardTileNode()) != null) {
+ root.appendChild(node);
+ }
+ if ((node = getStandardTransparencyNode()) != null) {
+ root.appendChild(node);
+ }
+
+ return root;
+ }
+
+ /**
+ * Sets the controller.
+ *
+ * @param controller the new controller
+ */
+ public void setController(IIOMetadataController controller) {
+ this.controller = controller;
+ }
+
+ /**
+ * Sets the from tree.
+ *
+ * @param formatName the name of the metatdata format of the from tree
+ * @param root the root node of the from tree
+ *
+ * @throws IIOInvalidTreeException if the tree or its format is not compatible with
+ * this metadata.
+ */
+ public void setFromTree(String formatName, Node root) throws IIOInvalidTreeException {
+ reset();
+ mergeTree(formatName, root);
+ }
+}