/* * Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package javax.swing.text.html; import javax.swing.text.*;import java.io.Serializable;import java.util.*; /** * An implementation of <code>AttributeSet</code> that can multiplex * across a set of <code>AttributeSet</code>s. * */class MuxingAttributeSet implements AttributeSet, Serializable { /** * Creates a <code>MuxingAttributeSet</code> with the passed in * attributes. */ public MuxingAttributeSet(AttributeSet[] attrs) { this.attrs = attrs; } /** * Creates an empty <code>MuxingAttributeSet</code>. This is intended for * use by subclasses only, and it is also intended that subclasses will * set the constituent <code>AttributeSet</code>s before invoking any * of the <code>AttributeSet</code> methods. */ protected MuxingAttributeSet() { } /** * Directly sets the <code>AttributeSet</code>s that comprise this * <code>MuxingAttributeSet</code>. */ protected synchronized void setAttributes(AttributeSet[] attrs) { this.attrs = attrs; } /** * Returns the <code>AttributeSet</code>s multiplexing too. When the * <code>AttributeSet</code>s need to be referenced, this should be called. */ protected synchronized AttributeSet[] getAttributes() { return attrs; } /** * Inserts <code>as</code> at <code>index</code>. This assumes * the value of <code>index</code> is between 0 and attrs.length, * inclusive. */ protected synchronized void insertAttributeSetAt(AttributeSet as, int index) { int numAttrs = attrs.length; AttributeSet newAttrs[] = new AttributeSet[numAttrs + 1]; if (index < numAttrs) { if (index > 0) { System.arraycopy(attrs, 0, newAttrs, 0, index); System.arraycopy(attrs, index, newAttrs, index + 1, numAttrs - index); } else { System.arraycopy(attrs, 0, newAttrs, 1, numAttrs); } } else { System.arraycopy(attrs, 0, newAttrs, 0, numAttrs); } newAttrs[index] = as; attrs = newAttrs; } /** * Removes the AttributeSet at <code>index</code>. This assumes * the value of <code>index</code> is greater than or equal to 0, * and less than attrs.length. */ protected synchronized void removeAttributeSetAt(int index) { int numAttrs = attrs.length; AttributeSet[] newAttrs = new AttributeSet[numAttrs - 1]; if (numAttrs > 0) { if (index == 0) { // FIRST System.arraycopy(attrs, 1, newAttrs, 0, numAttrs - 1); } else if (index < (numAttrs - 1)) { // MIDDLE System.arraycopy(attrs, 0, newAttrs, 0, index); System.arraycopy(attrs, index + 1, newAttrs, index, numAttrs - index - 1); } else { // END System.arraycopy(attrs, 0, newAttrs, 0, numAttrs - 1); } } attrs = newAttrs; } // --- AttributeSet methods ---------------------------- /** * Gets the number of attributes that are defined. * * @return the number of attributes * @see AttributeSet#getAttributeCount */ public int getAttributeCount() { AttributeSet[] as = getAttributes(); int n = 0; for (int i = 0; i < as.length; i++) { n += as[i].getAttributeCount(); } return n; } /** * Checks whether a given attribute is defined. * This will convert the key over to CSS if the * key is a StyleConstants key that has a CSS * mapping. * * @param key the attribute key * @return true if the attribute is defined * @see AttributeSet#isDefined */ public boolean isDefined(Object key) { AttributeSet[] as = getAttributes(); for (int i = 0; i < as.length; i++) { if (as[i].isDefined(key)) { return true; } } return false; } /** * Checks whether two attribute sets are equal. * * @param attr the attribute set to check against * @return true if the same * @see AttributeSet#isEqual */ public boolean isEqual(AttributeSet attr) { return ((getAttributeCount() == attr.getAttributeCount()) && containsAttributes(attr)); } /** * Copies a set of attributes. * * @return the copy * @see AttributeSet#copyAttributes */ public AttributeSet copyAttributes() { AttributeSet[] as = getAttributes(); MutableAttributeSet a = new SimpleAttributeSet(); int n = 0; for (int i = as.length - 1; i >= 0; i--) { a.addAttributes(as[i]); } return a; } /** * Gets the value of an attribute. If the requested * attribute is a StyleConstants attribute that has * a CSS mapping, the request will be converted. * * @param key the attribute name * @return the attribute value * @see AttributeSet#getAttribute */ public Object getAttribute(Object key) { AttributeSet[] as = getAttributes(); int n = as.length; for (int i = 0; i < n; i++) { Object o = as[i].getAttribute(key); if (o != null) { return o; } } return null; } /** * Gets the names of all attributes. * * @return the attribute names * @see AttributeSet#getAttributeNames */ public Enumeration getAttributeNames() { return new MuxingAttributeNameEnumeration(); } /** * Checks whether a given attribute name/value is defined. * * @param name the attribute name * @param value the attribute value * @return true if the name/value is defined * @see AttributeSet#containsAttribute */ public boolean containsAttribute(Object name, Object value) { return value.equals(getAttribute(name)); } /** * Checks whether the attribute set contains all of * the given attributes. * * @param attrs the attributes to check * @return true if the element contains all the attributes * @see AttributeSet#containsAttributes */ public boolean containsAttributes(AttributeSet attrs) { boolean result = true; Enumeration names = attrs.getAttributeNames(); while (result && names.hasMoreElements()) { Object name = names.nextElement(); result = attrs.getAttribute(name).equals(getAttribute(name)); } return result; } /** * Returns null, subclasses may wish to do something more * intelligent with this. */ public AttributeSet getResolveParent() { return null; } /** * The <code>AttributeSet</code>s that make up the resulting * <code>AttributeSet</code>. */ private AttributeSet[] attrs; /** * An Enumeration of the Attribute names in a MuxingAttributeSet. * This may return the same name more than once. */ private class MuxingAttributeNameEnumeration implements Enumeration { MuxingAttributeNameEnumeration() { updateEnum(); } public boolean hasMoreElements() { if (currentEnum == null) { return false; } return currentEnum.hasMoreElements(); } public Object nextElement() { if (currentEnum == null) { throw new NoSuchElementException("No more names"); } Object retObject = currentEnum.nextElement(); if (!currentEnum.hasMoreElements()) { updateEnum(); } return retObject; } void updateEnum() { AttributeSet[] as = getAttributes(); currentEnum = null; while (currentEnum == null && attrIndex < as.length) { currentEnum = as[attrIndex++].getAttributeNames(); if (!currentEnum.hasMoreElements()) { currentEnum = null; } } } /** Index into attrs the current Enumeration came from. */ private int attrIndex; /** Enumeration from attrs. */ private Enumeration currentEnum; }}
/*
* Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package javax.swing.text.html;
import javax.swing.text.*;
import java.io.Serializable;
import java.util.*;
/**
* An implementation of <code>AttributeSet</code> that can multiplex
* across a set of <code>AttributeSet</code>s.
*
*/
class MuxingAttributeSet implements AttributeSet, Serializable {
/**
* Creates a <code>MuxingAttributeSet</code> with the passed in
* attributes.
*/
public MuxingAttributeSet(AttributeSet[] attrs) {
this.attrs = attrs;
}
/**
* Creates an empty <code>MuxingAttributeSet</code>. This is intended for
* use by subclasses only, and it is also intended that subclasses will
* set the constituent <code>AttributeSet</code>s before invoking any
* of the <code>AttributeSet</code> methods.
*/
protected MuxingAttributeSet() {
}
/**
* Directly sets the <code>AttributeSet</code>s that comprise this
* <code>MuxingAttributeSet</code>.
*/
protected synchronized void setAttributes(AttributeSet[] attrs) {
this.attrs = attrs;
}
/**
* Returns the <code>AttributeSet</code>s multiplexing too. When the
* <code>AttributeSet</code>s need to be referenced, this should be called.
*/
protected synchronized AttributeSet[] getAttributes() {
return attrs;
}
/**
* Inserts <code>as</code> at <code>index</code>. This assumes
* the value of <code>index</code> is between 0 and attrs.length,
* inclusive.
*/
protected synchronized void insertAttributeSetAt(AttributeSet as,
int index) {
int numAttrs = attrs.length;
AttributeSet newAttrs[] = new AttributeSet[numAttrs + 1];
if (index < numAttrs) {
if (index > 0) {
System.arraycopy(attrs, 0, newAttrs, 0, index);
System.arraycopy(attrs, index, newAttrs, index + 1,
numAttrs - index);
}
else {
System.arraycopy(attrs, 0, newAttrs, 1, numAttrs);
}
}
else {
System.arraycopy(attrs, 0, newAttrs, 0, numAttrs);
}
newAttrs[index] = as;
attrs = newAttrs;
}
/**
* Removes the AttributeSet at <code>index</code>. This assumes
* the value of <code>index</code> is greater than or equal to 0,
* and less than attrs.length.
*/
protected synchronized void removeAttributeSetAt(int index) {
int numAttrs = attrs.length;
AttributeSet[] newAttrs = new AttributeSet[numAttrs - 1];
if (numAttrs > 0) {
if (index == 0) {
// FIRST
System.arraycopy(attrs, 1, newAttrs, 0, numAttrs - 1);
}
else if (index < (numAttrs - 1)) {
// MIDDLE
System.arraycopy(attrs, 0, newAttrs, 0, index);
System.arraycopy(attrs, index + 1, newAttrs, index,
numAttrs - index - 1);
}
else {
// END
System.arraycopy(attrs, 0, newAttrs, 0, numAttrs - 1);
}
}
attrs = newAttrs;
}
// --- AttributeSet methods ----------------------------
/**
* Gets the number of attributes that are defined.
*
* @return the number of attributes
* @see AttributeSet#getAttributeCount
*/
public int getAttributeCount() {
AttributeSet[] as = getAttributes();
int n = 0;
for (int i = 0; i < as.length; i++) {
n += as[i].getAttributeCount();
}
return n;
}
/**
* Checks whether a given attribute is defined.
* This will convert the key over to CSS if the
* key is a StyleConstants key that has a CSS
* mapping.
*
* @param key the attribute key
* @return true if the attribute is defined
* @see AttributeSet#isDefined
*/
public boolean isDefined(Object key) {
AttributeSet[] as = getAttributes();
for (int i = 0; i < as.length; i++) {
if (as[i].isDefined(key)) {
return true;
}
}
return false;
}
/**
* Checks whether two attribute sets are equal.
*
* @param attr the attribute set to check against
* @return true if the same
* @see AttributeSet#isEqual
*/
public boolean isEqual(AttributeSet attr) {
return ((getAttributeCount() == attr.getAttributeCount()) &&
containsAttributes(attr));
}
/**
* Copies a set of attributes.
*
* @return the copy
* @see AttributeSet#copyAttributes
*/
public AttributeSet copyAttributes() {
AttributeSet[] as = getAttributes();
MutableAttributeSet a = new SimpleAttributeSet();
int n = 0;
for (int i = as.length - 1; i >= 0; i--) {
a.addAttributes(as[i]);
}
return a;
}
/**
* Gets the value of an attribute. If the requested
* attribute is a StyleConstants attribute that has
* a CSS mapping, the request will be converted.
*
* @param key the attribute name
* @return the attribute value
* @see AttributeSet#getAttribute
*/
public Object getAttribute(Object key) {
AttributeSet[] as = getAttributes();
int n = as.length;
for (int i = 0; i < n; i++) {
Object o = as[i].getAttribute(key);
if (o != null) {
return o;
}
}
return null;
}
/**
* Gets the names of all attributes.
*
* @return the attribute names
* @see AttributeSet#getAttributeNames
*/
public Enumeration getAttributeNames() {
return new MuxingAttributeNameEnumeration();
}
/**
* Checks whether a given attribute name/value is defined.
*
* @param name the attribute name
* @param value the attribute value
* @return true if the name/value is defined
* @see AttributeSet#containsAttribute
*/
public boolean containsAttribute(Object name, Object value) {
return value.equals(getAttribute(name));
}
/**
* Checks whether the attribute set contains all of
* the given attributes.
*
* @param attrs the attributes to check
* @return true if the element contains all the attributes
* @see AttributeSet#containsAttributes
*/
public boolean containsAttributes(AttributeSet attrs) {
boolean result = true;
Enumeration names = attrs.getAttributeNames();
while (result && names.hasMoreElements()) {
Object name = names.nextElement();
result = attrs.getAttribute(name).equals(getAttribute(name));
}
return result;
}
/**
* Returns null, subclasses may wish to do something more
* intelligent with this.
*/
public AttributeSet getResolveParent() {
return null;
}
/**
* The <code>AttributeSet</code>s that make up the resulting
* <code>AttributeSet</code>.
*/
private AttributeSet[] attrs;
/**
* An Enumeration of the Attribute names in a MuxingAttributeSet.
* This may return the same name more than once.
*/
private class MuxingAttributeNameEnumeration implements Enumeration {
MuxingAttributeNameEnumeration() {
updateEnum();
}
public boolean hasMoreElements() {
if (currentEnum == null) {
return false;
}
return currentEnum.hasMoreElements();
}
public Object nextElement() {
if (currentEnum == null) {
throw new NoSuchElementException("No more names");
}
Object retObject = currentEnum.nextElement();
if (!currentEnum.hasMoreElements()) {
updateEnum();
}
return retObject;
}
void updateEnum() {
AttributeSet[] as = getAttributes();
currentEnum = null;
while (currentEnum == null && attrIndex < as.length) {
currentEnum = as[attrIndex++].getAttributeNames();
if (!currentEnum.hasMoreElements()) {
currentEnum = null;
}
}
}
/** Index into attrs the current Enumeration came from. */
private int attrIndex;
/** Enumeration from attrs. */
private Enumeration currentEnum;
}
}