org.htmlunit.cyberneko.xerces.xni.XMLAttributes Maven / Gradle / Ivy
/*
* Copyright (c) 2017-2024 Ronald Brill
*
* Licensed 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
* https://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 org.htmlunit.cyberneko.xerces.xni;
/**
* The XMLAttributes interface defines a collection of attributes for an
* element. In the parser, the document source would scan the entire start
* element and collect the attributes. The attributes are communicated to the
* document handler in the startElement method.
*
* The attributes are read-write so that subsequent stages in the document
* pipeline can modify the values or change the attributes that are propagated
* to the next stage.
*
* @see XMLDocumentHandler#startElement
*
* @author Andy Clark, IBM
*/
public interface XMLAttributes {
/**
* Adds an attribute. The attribute's non-normalized value of the attribute will
* have the same value as the attribute value until. Also, the added attribute
* will be marked as specified in the XML instance document unless set otherwise
* using the setSpecified method.
*
* Note: If an attribute of the same name already exists, the
* old values for the attribute are replaced by the new values.
*
* @param attrName The attribute name.
* @param attrType The attribute type. The type name is determined by the type
* specified for this attribute in the DTD. For example:
* "CDATA", "ID", "NMTOKEN", etc. However, attributes of type
* enumeration will have the type value specified as the pipe
* ('|') separated list of the enumeration values prefixed by
* an open parenthesis and suffixed by a close parenthesis. For
* example: "(true|false)".
* @param attrValue The attribute value.
*
* @return Returns the attribute index.
*
* @see #setSpecified(int, boolean)
*/
int addAttribute(QName attrName, String attrType, String attrValue);
/**
* Removes all of the attributes. This method will also remove all entities
* associated to the attributes.
*/
void removeAllAttributes();
/**
* Removes the attribute at the specified index.
*
* Note: This operation changes the indexes of all attributes
* following the attribute at the specified index.
*
* @param attrIndex The attribute index.
*/
void removeAttributeAt(int attrIndex);
/**
* @return the number of attributes in the list.
*
* Once you know the number of attributes, you can iterate through the
* list.
*
* @see #getURI(int)
* @see #getLocalName(int)
* @see #getQName(int)
* @see #getType(int)
* @see #getValue(int)
*/
int getLength();
/**
* Look up the index of an attribute by XML 1.0 qualified name.
*
* @param qName The qualified (prefixed) name.
*
* @return The index of the attribute, or -1 if it does not appear in the list.
*/
int getIndex(String qName);
/**
* Look up the index of an attribute by Namespace name.
*
* @param uri The Namespace URI, or the empty string if the name has no
* Namespace URI.
* @param localPart The attribute's local name.
*
* @return The index of the attribute, or -1 if it does not appear in the list.
*/
int getIndex(String uri, String localPart);
/**
* Sets the name of the attribute at the specified index.
*
* @param attrIndex The attribute index.
* @param attrName The new attribute name.
*/
void setName(int attrIndex, QName attrName);
/**
* Gets the fields in the given QName structure with the values of the attribute
* name at the specified index.
*
* @param attrIndex The attribute index.
* @param attrName The attribute name structure to fill in.
*/
void getName(int attrIndex, QName attrName);
/**
* Returns the QName structure of the name. Because QName is a modifiable
* data structure, make sure you know what you do when you take this
* shortcut route.
*
* @param attrIndex The attribute index.
*/
QName getName(int attrIndex);
/**
* Look up an attribute's Namespace URI by index.
*
* @param index The attribute index (zero-based).
*
* @return The Namespace URI, or the empty string if none is available, or null
* if the index is out of range.
*
* @see #getLength()
*/
String getURI(int index);
/**
* Look up an attribute's local name by index.
*
* @param index The attribute index (zero-based).
*
* @return The local name, or the empty string if Namespace processing is not
* being performed, or null if the index is out of range.
*
* @see #getLength()
*/
String getLocalName(int index);
/**
* Look up an attribute's XML 1.0 qualified name by index.
*
* @param index The attribute index (zero-based).
*
* @return The XML 1.0 qualified name, or the empty string if none is available,
* or null if the index is out of range.
*
* @see #getLength()
*/
String getQName(int index);
/**
* Sets the type of the attribute at the specified index.
*
* @param attrIndex The attribute index.
* @param attrType The attribute type. The type name is determined by the type
* specified for this attribute in the DTD. For example:
* "CDATA", "ID", "NMTOKEN", etc. However, attributes of type
* enumeration will have the type value specified as the pipe
* ('|') separated list of the enumeration values prefixed by
* an open parenthesis and suffixed by a close parenthesis. For
* example: "(true|false)".
*/
void setType(int attrIndex, String attrType);
/**
* Look up an attribute's type by index.
*
* The attribute type is one of the strings "CDATA", "ID", "IDREF", "IDREFS",
* "NMTOKEN", "NMTOKENS", "ENTITY", "ENTITIES", or "NOTATION" (always in upper
* case).
*
* If the parser has not read a declaration for the attribute, or if the parser
* does not report attribute types, then it must return the value "CDATA" as
* stated in the XML 1.0 Recommendation (clause 3.3.3, "Attribute-Value
* Normalization").
*
* For an enumerated attribute that is not a notation, the parser will report
* the type as "NMTOKEN".
*
* @param index The attribute index (zero-based).
*
* @return The attribute's type as a string, or null if the index is out of
* range.
*
* @see #getLength()
*/
String getType(int index);
/**
* Look up an attribute's type by XML 1.0 qualified name.
*
* See {@link #getType(int) getType(int)} for a description of the possible
* types.
*
* @param qName The XML 1.0 qualified name.
*
* @return The attribute type as a string, or null if the attribute is not in
* the list or if qualified names are not available.
*/
String getType(String qName);
/**
* Look up an attribute's type by Namespace name.
*
* See {@link #getType(int) getType(int)} for a description of the possible
* types.
*
* @param uri The Namespace URI, or the empty String if the name has no
* Namespace URI.
* @param localName The local name of the attribute.
*
* @return The attribute type as a string, or null if the attribute is not in
* the list or if Namespace processing is not being performed.
*/
String getType(String uri, String localName);
/**
* Sets the value of the attribute at the specified index. This method will
* overwrite the non-normalized value of the attribute.
*
* @param attrIndex The attribute index.
* @param attrValue The new attribute value.
*/
void setValue(int attrIndex, String attrValue);
/**
* Look up an attribute's value by index.
*
* If the attribute value is a list of tokens (IDREFS, ENTITIES, or NMTOKENS),
* the tokens will be concatenated into a single string with each token
* separated by a single space.
*
* @param index The attribute index (zero-based).
*
* @return The attribute's value as a string, or null if the index is out of
* range.
*
* @see #getLength()
*/
String getValue(int index);
/**
* Look up an attribute's value by XML 1.0 qualified name.
*
* See {@link #getValue(int) getValue(int)} for a description of the possible
* values.
*
* @param qName The XML 1.0 qualified name.
*
* @return The attribute value as a string, or null if the attribute is not in
* the list or if qualified names are not available.
*/
String getValue(String qName);
/**
* Look up an attribute's value by Namespace name.
*
* See {@link #getValue(int) getValue(int)} for a description of the possible
* values.
*
* @param uri The Namespace URI, or the empty String if the name has no
* Namespace URI.
* @param localName The local name of the attribute.
*
* @return The attribute value as a string, or null if the attribute is not in
* the list.
*/
String getValue(String uri, String localName);
/**
* Sets whether an attribute is specified in the instance document or not.
*
* @param attrIndex The attribute index.
* @param specified True if the attribute is specified in the instance document.
*/
void setSpecified(int attrIndex, boolean specified);
/**
* @return true if the attribute is specified in the instance document.
*
* @param attrIndex The attribute index.
*/
boolean isSpecified(int attrIndex);
}