/*
* 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 com.google.code.appengine.imageio.metadata;
import java.util.ArrayList;
import org.apache.harmony.x.imageio.metadata.IIOMetadataUtils;
import org.w3c.dom.Node;
import org.apache.harmony.x.imageio.internal.nls.Messages;
import com.google.code.appengine.imageio.metadata.IIOInvalidTreeException;
import com.google.code.appengine.imageio.metadata.IIOMetadataController;
import com.google.code.appengine.imageio.metadata.IIOMetadataFormat;
import com.google.code.appengine.imageio.metadata.IIOMetadataFormatImpl;
import com.google.code.appengine.imageio.metadata.IIOMetadataNode;
public abstract class IIOMetadata {
protected boolean standardFormatSupported;
protected String nativeMetadataFormatName;
protected String nativeMetadataFormatClassName;
protected String[] extraMetadataFormatNames;
protected String[] extraMetadataFormatClassNames;
protected IIOMetadataController defaultController;
protected IIOMetadataController controller;
protected IIOMetadata() {}
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(
Messages.getString("imageio.77")
);
}
} else {
if (extraMetadataFormatClassNames == null) {
throw new IllegalArgumentException(
Messages.getString("imageio.78")
);
}
if (extraMetadataFormatNames.length == 0) {
throw new IllegalArgumentException(Messages.getString("imageio.79"));
}
if (extraMetadataFormatClassNames.length != extraMetadataFormatNames.length) {
throw new IllegalArgumentException(
Messages.getString("imageio.7A")
);
}
this.extraMetadataFormatNames = extraMetadataFormatNames.clone();
this.extraMetadataFormatClassNames = extraMetadataFormatClassNames.clone();
}
}
public abstract Node getAsTree(String formatName);
public abstract boolean isReadOnly();
public abstract void mergeTree(String formatName, Node root) throws IIOInvalidTreeException;
public abstract void reset();
public IIOMetadataController getController() {
return controller;
}
public boolean hasController() {
return getController() != null;
}
public boolean activateController() {
if (!hasController()) {
throw new IllegalStateException(Messages.getString("imageio.7B"));
}
return getController().activate(this);
}
public IIOMetadataController getDefaultController() {
return defaultController;
}
public String[] getExtraMetadataFormatNames() {
return extraMetadataFormatNames == null ? null : extraMetadataFormatNames.clone();
}
public IIOMetadataFormat getMetadataFormat(String formatName) {
return IIOMetadataUtils.instantiateMetadataFormat(
formatName,
standardFormatSupported,
nativeMetadataFormatName, nativeMetadataFormatClassName,
extraMetadataFormatNames, extraMetadataFormatClassNames
);
}
public String getNativeMetadataFormatName() {
return nativeMetadataFormatName;
}
public boolean isStandardMetadataFormatSupported() {
return standardFormatSupported;
}
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;
}
protected IIOMetadataNode getStandardChromaNode() {
return null;
}
protected IIOMetadataNode getStandardCompressionNode() {
return null;
}
protected IIOMetadataNode getStandardDataNode() {
return null;
}
protected IIOMetadataNode getStandardDimensionNode() {
return null;
}
protected IIOMetadataNode getStandardDocumentNode() {
return null;
}
protected IIOMetadataNode getStandardTextNode() {
return null;
}
protected IIOMetadataNode getStandardTileNode() {
return null;
}
protected IIOMetadataNode getStandardTransparencyNode() {
return null;
}
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;
}
public void setController(IIOMetadataController controller) {
this.controller = controller;
}
public void setFromTree(String formatName, Node root) throws IIOInvalidTreeException {
reset();
mergeTree(formatName, root);
}
}