/*
* 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.security.AccessController;
import java.security.PrivilegedAction;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import org.apache.harmony.x.imageio.internal.nls.Messages;
import com.google.code.appengine.imageio.ImageTypeSpecifier;
public abstract class IIOMetadataFormatImpl implements IIOMetadataFormat {
@SuppressWarnings({"ConstantDeclaredInAbstractClass"})
public static final String standardMetadataFormatName = "javax_imageio_1.0";
@SuppressWarnings({"StaticNonFinalField"})
private static IIOMetadataFormatImpl standardFormat;
private String rootName;
private HashMap<String, Element> elementHash = new HashMap<String, Element>();
private String resourceBaseName = getClass().getName() + "Resources";
public IIOMetadataFormatImpl(String rootName, int childPolicy) {
if (rootName == null) {
throw new IllegalArgumentException(Messages.getString("imageio.63"));
}
if (
childPolicy < CHILD_POLICY_EMPTY ||
childPolicy > CHILD_POLICY_MAX ||
childPolicy == CHILD_POLICY_REPEAT
) {
throw new IllegalArgumentException(Messages.getString("imageio.64"));
}
this.rootName = rootName;
Element root = new Element();
root.name = rootName;
root.childPolicy = childPolicy;
elementHash.put(rootName, root);
}
public IIOMetadataFormatImpl(String rootName, int minChildren, int maxChildren) {
if (rootName == null) {
throw new IllegalArgumentException(Messages.getString("imageio.63"));
}
if (minChildren < 0) {
throw new IllegalArgumentException(Messages.getString("imageio.65"));
}
if (minChildren > maxChildren) {
throw new IllegalArgumentException(Messages.getString("imageio.66"));
}
this.rootName = rootName;
Element root = new Element();
root.name = rootName;
root.minChildren = minChildren;
root.maxChildren = maxChildren;
root.childPolicy = CHILD_POLICY_REPEAT;
elementHash.put(rootName, root);
}
@SuppressWarnings({"AbstractMethodOverridesAbstractMethod"})
public abstract boolean canNodeAppear(String elementName, ImageTypeSpecifier imageType);
protected void addAttribute(
String elementName, String attrName, int dataType,
boolean required, int listMinLength, int listMaxLength
) {
if (attrName == null) {
throw new IllegalArgumentException(Messages.getString("imageio.67"));
}
if (dataType < DATATYPE_STRING || dataType > DATATYPE_DOUBLE) {
throw new IllegalArgumentException(Messages.getString("imageio.68"));
}
if (listMinLength < 0 || listMinLength > listMaxLength) {
throw new IllegalArgumentException(Messages.getString("imageio.69"));
}
Element element = findElement(elementName);
Attlist attr = new Attlist();
attr.name = attrName;
attr.dataType = dataType;
attr.required = required;
attr.listMinLength = listMinLength;
attr.listMaxLength = listMaxLength;
attr.valueType = VALUE_LIST;
element.attributes.put(attrName, attr);
}
protected void addAttribute(
String elementName, String attrName, int dataType,
boolean required, String defaultValue
) {
if (attrName == null) {
throw new IllegalArgumentException(Messages.getString("imageio.67"));
}
if (dataType < DATATYPE_STRING || dataType > DATATYPE_DOUBLE) {
throw new IllegalArgumentException(Messages.getString("imageio.68"));
}
Element element = findElement(elementName);
Attlist attr = new Attlist();
attr.name = attrName;
attr.dataType = dataType;
attr.required = required;
attr.defaultValue = defaultValue;
attr.valueType = VALUE_ARBITRARY;
element.attributes.put(attrName, attr);
}
protected void addAttribute(
String elementName, String attrName, int dataType,
boolean required, String defaultValue, List<String> enumeratedValues
) {
if (attrName == null) {
throw new IllegalArgumentException(Messages.getString("imageio.67"));
}
if (dataType < DATATYPE_STRING || dataType > DATATYPE_DOUBLE) {
throw new IllegalArgumentException(Messages.getString("imageio.68"));
}
if (enumeratedValues == null || enumeratedValues.isEmpty()) {
throw new IllegalArgumentException(Messages.getString("imageio.6A"));
}
try {
for (String enumeratedValue : enumeratedValues) {
if (enumeratedValue == null) {
throw new IllegalArgumentException(Messages.getString("imageio.6B"));
}
}
} catch (ClassCastException e) {
throw new IllegalArgumentException(Messages.getString("imageio.6C"));
}
Element element = findElement(elementName);
Attlist attr = new Attlist();
attr.name = attrName;
attr.dataType = dataType;
attr.required = required;
attr.defaultValue = defaultValue;
attr.enumeratedValues = enumeratedValues;
attr.valueType = VALUE_ENUMERATION;
element.attributes.put(attrName, attr);
}
protected void addAttribute(
String elementName, String attrName, int dataType,
boolean required, String defaultValue,
String minValue, String maxValue,
boolean minInclusive, boolean maxInclusive
) {
if (attrName == null) {
throw new IllegalArgumentException(Messages.getString("imageio.67"));
}
if (dataType < DATATYPE_STRING || dataType > DATATYPE_DOUBLE) {
throw new IllegalArgumentException(Messages.getString("imageio.68"));
}
Element element = findElement(elementName);
Attlist attr = new Attlist();
attr.name = attrName;
attr.dataType = dataType;
attr.required = required;
attr.defaultValue = defaultValue;
attr.minValue = minValue;
attr.maxValue = maxValue;
attr.minInclusive = minInclusive;
attr.maxInclusive = maxInclusive;
attr.valueType = VALUE_RANGE;
attr.valueType |= minInclusive ? VALUE_RANGE_MIN_INCLUSIVE_MASK : 0;
attr.valueType |= maxInclusive ? VALUE_RANGE_MAX_INCLUSIVE_MASK : 0;
element.attributes.put(attrName, attr);
}
protected void addBooleanAttribute(
String elementName, String attrName,
boolean hasDefaultValue, boolean defaultValue
) {
String defaultVal = hasDefaultValue ? (defaultValue ? "TRUE" : "FALSE") : null;
ArrayList<String> values = new ArrayList<String>(2);
values.add("TRUE");
values.add("FALSE");
addAttribute(elementName, attrName, DATATYPE_BOOLEAN, true, defaultVal, values);
}
protected void addChildElement(String elementName, String parentName) {
Element parent = findElement(parentName);
Element element = findElement(elementName);
parent.children.add(element.name);
}
protected void addElement(String elementName, String parentName, int childPolicy) {
if (
childPolicy < CHILD_POLICY_EMPTY ||
childPolicy > CHILD_POLICY_MAX ||
childPolicy == CHILD_POLICY_REPEAT
) {
throw new IllegalArgumentException(Messages.getString("imageio.64"));
}
Element parent = findElement(parentName);
Element element = new Element();
element.name = elementName;
element.childPolicy = childPolicy;
elementHash.put(elementName, element);
parent.children.add(elementName);
}
protected void addElement(
String elementName, String parentName,
int minChildren, int maxChildren
) {
if (minChildren < 0) {
throw new IllegalArgumentException(Messages.getString("imageio.65"));
}
if (minChildren > maxChildren) {
throw new IllegalArgumentException(Messages.getString("imageio.66"));
}
Element parent = findElement(parentName);
Element element = new Element();
element.name = elementName;
element.childPolicy = CHILD_POLICY_REPEAT;
element.minChildren = minChildren;
element.maxChildren = maxChildren;
elementHash.put(elementName, element);
parent.children.add(elementName);
}
protected void addObjectValue(
String elementName, Class<?> classType,
int arrayMinLength, int arrayMaxLength
) {
Element element = findElement(elementName);
ObjectValue objVal = new ObjectValue();
objVal.classType = classType;
objVal.arrayMaxLength = arrayMaxLength;
objVal.arrayMinLength = arrayMinLength;
objVal.valueType = VALUE_LIST;
element.objectValue = objVal;
}
protected <T> void addObjectValue(
String elementName, Class<T> classType,
boolean required, T defaultValue
) {
// note: reqired is an unused parameter
Element element = findElement(elementName);
ObjectValue<T> objVal = new ObjectValue<T>();
objVal.classType = classType;
objVal.defaultValue = defaultValue;
objVal.valueType = VALUE_ARBITRARY;
element.objectValue = objVal;
}
protected <T> void addObjectValue(
String elementName, Class<T> classType,
boolean required, T defaultValue,
List<? extends T> enumeratedValues
) {
// note: reqired is an unused parameter
if (enumeratedValues == null || enumeratedValues.isEmpty()) {
throw new IllegalArgumentException(Messages.getString("imageio.6A"));
}
try {
for (T enumeratedValue : enumeratedValues) {
if (enumeratedValue == null) {
throw new IllegalArgumentException(Messages.getString("imageio.6B"));
}
}
} catch (ClassCastException e) {
throw new IllegalArgumentException(Messages.getString("imageio.6D"));
}
Element element = findElement(elementName);
ObjectValue<T> objVal = new ObjectValue<T>();
objVal.classType = classType;
objVal.defaultValue = defaultValue;
objVal.enumeratedValues = enumeratedValues;
objVal.valueType = VALUE_ENUMERATION;
element.objectValue = objVal;
}
protected <T extends Object & Comparable<? super T>> void addObjectValue(
String elementName, Class<T> classType,
T defaultValue, Comparable<? super T> minValue, Comparable<? super T> maxValue,
boolean minInclusive, boolean maxInclusive
) {
Element element = findElement(elementName);
ObjectValue<T> objVal = new ObjectValue<T>();
objVal.classType = classType;
objVal.defaultValue = defaultValue;
objVal.minValue = minValue;
objVal.maxValue = maxValue;
objVal.minInclusive = minInclusive;
objVal.maxInclusive = maxInclusive;
objVal.valueType = VALUE_RANGE;
objVal.valueType |= minInclusive ? VALUE_RANGE_MIN_INCLUSIVE_MASK : 0;
objVal.valueType |= maxInclusive ? VALUE_RANGE_MAX_INCLUSIVE_MASK : 0;
element.objectValue = objVal;
}
public int getAttributeDataType(String elementName, String attrName) {
Attlist attr = findAttribute(elementName, attrName);
return attr.dataType;
}
public String getAttributeDefaultValue(String elementName, String attrName) {
Attlist attr = findAttribute(elementName, attrName);
return attr.defaultValue;
}
public String getAttributeDescription(String elementName, String attrName, Locale locale) {
findAttribute(elementName, attrName);
return getResourceString(elementName + "/" + attrName, locale);
}
public String[] getAttributeEnumerations(String elementName, String attrName) {
Attlist attr = findAttribute(elementName, attrName);
if (attr.valueType != VALUE_ENUMERATION) {
throw new IllegalArgumentException(Messages.getString("imageio.6E"));
}
return attr.enumeratedValues.toArray(new String[attr.enumeratedValues.size()]);
}
public int getAttributeListMaxLength(String elementName, String attrName) {
Attlist attr = findAttribute(elementName, attrName);
if (attr.valueType != VALUE_LIST) {
throw new IllegalArgumentException(Messages.getString("imageio.6F"));
}
return attr.listMaxLength;
}
public int getAttributeListMinLength(String elementName, String attrName) {
Attlist attr = findAttribute(elementName, attrName);
if (attr.valueType != VALUE_LIST) {
throw new IllegalArgumentException(Messages.getString("imageio.6F"));
}
return attr.listMinLength;
}
public String getAttributeMaxValue(String elementName, String attrName) {
Attlist attr = findAttribute(elementName, attrName);
if ((attr.valueType & VALUE_RANGE) == 0) {
throw new IllegalArgumentException(Messages.getString("imageio.70"));
}
return attr.maxValue;
}
public String getAttributeMinValue(String elementName, String attrName) {
Attlist attr = findAttribute(elementName, attrName);
if ((attr.valueType & VALUE_RANGE) == 0) {
throw new IllegalArgumentException(Messages.getString("imageio.70"));
}
return attr.minValue;
}
public String[] getAttributeNames(String elementName) {
Element element = findElement(elementName);
return element.attributes.keySet().toArray(new String[element.attributes.size()]);
}
public int getAttributeValueType(String elementName, String attrName) {
Attlist attr = findAttribute(elementName, attrName);
return attr.valueType;
}
public String[] getChildNames(String elementName) {
Element element = findElement(elementName);
if (element.childPolicy == CHILD_POLICY_EMPTY) { // Element cannot have children
return null;
}
return element.children.toArray(new String[element.children.size()]);
}
public int getChildPolicy(String elementName) {
Element element = findElement(elementName);
return element.childPolicy;
}
public String getElementDescription(String elementName, Locale locale) {
findElement(elementName); // Check if there is such element
return getResourceString(elementName, locale);
}
public int getElementMaxChildren(String elementName) {
Element element = findElement(elementName);
if (element.childPolicy != CHILD_POLICY_REPEAT) {
throw new IllegalArgumentException(Messages.getString("imageio.71"));
}
return element.maxChildren;
}
public int getElementMinChildren(String elementName) {
Element element = findElement(elementName);
if (element.childPolicy != CHILD_POLICY_REPEAT) {
throw new IllegalArgumentException(Messages.getString("imageio.71"));
}
return element.minChildren;
}
public int getObjectArrayMaxLength(String elementName) {
Element element = findElement(elementName);
ObjectValue v = element.objectValue;
if (v == null || v.valueType != VALUE_LIST) {
throw new IllegalArgumentException(Messages.getString("imageio.72"));
}
return v.arrayMaxLength;
}
public int getObjectArrayMinLength(String elementName) {
Element element = findElement(elementName);
ObjectValue v = element.objectValue;
if (v == null || v.valueType != VALUE_LIST) {
throw new IllegalArgumentException(Messages.getString("imageio.72"));
}
return v.arrayMinLength;
}
public Class<?> getObjectClass(String elementName) {
ObjectValue v = findObjectValue(elementName);
return v.classType;
}
public Object getObjectDefaultValue(String elementName) {
ObjectValue v = findObjectValue(elementName);
return v.defaultValue;
}
public Object[] getObjectEnumerations(String elementName) {
Element element = findElement(elementName);
ObjectValue v = element.objectValue;
if (v == null || v.valueType != VALUE_ENUMERATION) {
throw new IllegalArgumentException(Messages.getString("imageio.73"));
}
return v.enumeratedValues.toArray();
}
public Comparable<?> getObjectMaxValue(String elementName) {
Element element = findElement(elementName);
ObjectValue v = element.objectValue;
if (v == null || (v.valueType & VALUE_RANGE) == 0) {
throw new IllegalArgumentException(Messages.getString("imageio.74"));
}
return v.maxValue;
}
public Comparable<?> getObjectMinValue(String elementName) {
Element element = findElement(elementName);
ObjectValue v = element.objectValue;
if (v == null || (v.valueType & VALUE_RANGE) == 0) {
throw new IllegalArgumentException(Messages.getString("imageio.74"));
}
return v.minValue;
}
public int getObjectValueType(String elementName) {
Element element = findElement(elementName);
if (element.objectValue == null) {
return VALUE_NONE;
}
return element.objectValue.valueType;
}
protected String getResourceBaseName() {
return resourceBaseName;
}
public String getRootName() {
return rootName;
}
public static IIOMetadataFormat getStandardFormatInstance() {
if (standardFormat == null) {
standardFormat = new IIOStandardMetadataFormat();
}
return standardFormat;
}
public boolean isAttributeRequired(String elementName, String attrName) {
return findAttribute(elementName, attrName).required;
}
protected void removeAttribute(String elementName, String attrName) {
Element element = findElement(elementName);
element.attributes.remove(attrName);
}
protected void removeElement(String elementName) {
Element element;
if ((element = elementHash.get(elementName)) != null) {
elementHash.remove(elementName);
for (Element e : elementHash.values()) {
e.children.remove(element.name);
}
}
}
protected void removeObjectValue(String elementName) {
Element element = findElement(elementName);
element.objectValue = null;
}
protected void setResourceBaseName(String resourceBaseName) {
if (resourceBaseName == null) {
throw new IllegalArgumentException(Messages.getString("imageio.75"));
}
this.resourceBaseName = resourceBaseName;
}
@SuppressWarnings({"ClassWithoutConstructor"})
private class Element {
String name;
ArrayList<String> children = new ArrayList<String>();
HashMap<String, Attlist> attributes = new HashMap<String, Attlist>();
int minChildren;
int maxChildren;
int childPolicy;
ObjectValue objectValue;
}
@SuppressWarnings({"ClassWithoutConstructor"})
private class Attlist {
String name;
int dataType;
boolean required;
int listMinLength;
int listMaxLength;
String defaultValue;
List<String> enumeratedValues;
String minValue;
String maxValue;
boolean minInclusive;
boolean maxInclusive;
int valueType;
}
@SuppressWarnings({"ClassWithoutConstructor"})
private class ObjectValue<T> {
Class<T> classType;
int arrayMinLength;
int arrayMaxLength;
T defaultValue;
List<? extends T> enumeratedValues;
Comparable<? super T> minValue;
Comparable<? super T> maxValue;
boolean minInclusive;
boolean maxInclusive;
int valueType;
}
private Element findElement(String name) {
Element element;
if ((element = elementHash.get(name)) == null) {
throw new IllegalArgumentException(Messages.getString("imageio.8C", name));
}
return element;
}
private Attlist findAttribute(String elementName, String attributeName) {
Element element = findElement(elementName);
Attlist attribute;
if ((attribute = element.attributes.get(attributeName)) == null) {
throw new IllegalArgumentException(Messages.getString("imageio.8D", attributeName));
}
return attribute;
}
private ObjectValue findObjectValue(String elementName) {
Element element = findElement(elementName);
ObjectValue v = element.objectValue;
if (v == null) {
throw new IllegalArgumentException(Messages.getString("imageio.76"));
}
return v;
}
private String getResourceString(String key, Locale locale) {
if (locale == null) {
locale = Locale.getDefault();
}
// Get the context class loader and try to locate the bundle with it first
ClassLoader contextClassloader = AccessController.doPrivileged(
new PrivilegedAction<ClassLoader>() {
public ClassLoader run() {
return Thread.currentThread().getContextClassLoader();
}
});
// Now try to get the resource bundle
ResourceBundle rb;
try {
rb = ResourceBundle.getBundle(resourceBaseName, locale, contextClassloader);
} catch (MissingResourceException e) {
try {
rb = ResourceBundle.getBundle(resourceBaseName, locale);
} catch (MissingResourceException e1) {
return null;
}
}
try {
return rb.getString(key);
} catch (MissingResourceException e) {
return null;
} catch (ClassCastException e) {
return null; // Not a string resource
}
}
}