mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-03 22:06:50 +00:00
377 lines
13 KiB
Java
377 lines
13 KiB
Java
/* AttributedString.java -- Models text with attributes
|
|
Copyright (C) 1998, 1999, 2004, 2005, 2006, 2012 Free Software Foundation, Inc.
|
|
|
|
This file is part of GNU Classpath.
|
|
|
|
GNU Classpath is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
GNU Classpath 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 for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GNU Classpath; see the file COPYING. If not, write to the
|
|
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
02110-1301 USA.
|
|
|
|
Linking this library statically or dynamically with other modules is
|
|
making a combined work based on this library. Thus, the terms and
|
|
conditions of the GNU General Public License cover the whole
|
|
combination.
|
|
|
|
As a special exception, the copyright holders of this library give you
|
|
permission to link this library with independent modules to produce an
|
|
executable, regardless of the license terms of these independent
|
|
modules, and to copy and distribute the resulting executable under
|
|
terms of your choice, provided that you also meet, for each linked
|
|
independent module, the terms and conditions of the license of that
|
|
module. An independent module is a module which is not derived from
|
|
or based on this library. If you modify this library, you may extend
|
|
this exception to your version of the library, but you are not
|
|
obligated to do so. If you do not wish to do so, delete this
|
|
exception statement from your version. */
|
|
|
|
|
|
package java.text;
|
|
|
|
import gnu.java.lang.CPStringBuilder;
|
|
|
|
import java.util.ArrayList;
|
|
import java.util.Arrays;
|
|
import java.util.HashMap;
|
|
import java.util.Hashtable;
|
|
import java.util.Iterator;
|
|
import java.util.Map;
|
|
import java.util.Set;
|
|
|
|
import static java.text.AttributedCharacterIterator.Attribute;
|
|
|
|
/**
|
|
* This class models a <code>String</code> with attributes over various
|
|
* subranges of the string. It allows applications to access this
|
|
* information via the <code>AttributedCharacterIterator</code> interface.
|
|
*
|
|
* @since 1.2
|
|
*
|
|
* @author Aaron M. Renn (arenn@urbanophile.com)
|
|
* @since 1.2
|
|
*/
|
|
public class AttributedString
|
|
{
|
|
|
|
/**
|
|
* The attributes and ranges of text over which those attributes apply.
|
|
*/
|
|
final class AttributeRange
|
|
{
|
|
|
|
/** A Map of the attributes */
|
|
Map<? extends Attribute, ?> attribs;
|
|
|
|
/** The beginning index of the attributes */
|
|
int beginIndex;
|
|
|
|
/** The ending index of the attributes */
|
|
int endIndex;
|
|
|
|
/**
|
|
* Creates a new attribute range.
|
|
*
|
|
* @param attribs the attributes.
|
|
* @param beginIndex the start index.
|
|
* @param endIndex the end index.
|
|
*/
|
|
AttributeRange(Map<? extends Attribute, ?> attribs,
|
|
int beginIndex, int endIndex)
|
|
{
|
|
this.attribs = attribs;
|
|
this.beginIndex = beginIndex;
|
|
this.endIndex = endIndex;
|
|
}
|
|
|
|
} // Inner class AttributeRange
|
|
|
|
/** The string we are representing. */
|
|
private StringCharacterIterator sci;
|
|
|
|
/** The attribute information */
|
|
private AttributeRange[] attribs;
|
|
|
|
/**
|
|
* Creates a new instance of <code>AttributedString</code>
|
|
* that represents the specified <code>String</code> with no attributes.
|
|
*
|
|
* @param str The <code>String</code> to be attributed (<code>null</code> not
|
|
* permitted).
|
|
*
|
|
* @throws NullPointerException if <code>str</code> is <code>null</code>.
|
|
*/
|
|
public AttributedString(String str)
|
|
{
|
|
sci = new StringCharacterIterator(str);
|
|
attribs = new AttributeRange[0];
|
|
}
|
|
|
|
/**
|
|
* Creates a new instance of <code>AttributedString</code>
|
|
* that represents that specified <code>String</code> with the specified
|
|
* attributes over the entire length of the <code>String</code>.
|
|
*
|
|
* @param str The <code>String</code> to be attributed.
|
|
* @param attributes The attribute list.
|
|
*/
|
|
public AttributedString(String str,
|
|
Map<? extends Attribute, ?> attributes)
|
|
{
|
|
this(str);
|
|
|
|
attribs = new AttributeRange[1];
|
|
attribs[0] = new AttributeRange(attributes, 0, str.length());
|
|
}
|
|
|
|
/**
|
|
* Initializes a new instance of <code>AttributedString</code>
|
|
* that will use the text and attribute information from the specified
|
|
* <code>AttributedCharacterIterator</code>.
|
|
*
|
|
* @param aci The <code>AttributedCharacterIterator</code> containing the
|
|
* text and attribute information (<code>null</code> not
|
|
* permitted).
|
|
*
|
|
* @throws NullPointerException if <code>aci</code> is <code>null</code>.
|
|
*/
|
|
public AttributedString(AttributedCharacterIterator aci)
|
|
{
|
|
this(aci, aci.getBeginIndex(), aci.getEndIndex(), null);
|
|
}
|
|
|
|
/**
|
|
* Initializes a new instance of <code>AttributedString</code>
|
|
* that will use the text and attribute information from the specified
|
|
* subrange of the specified <code>AttributedCharacterIterator</code>.
|
|
*
|
|
* @param aci The <code>AttributedCharacterIterator</code> containing the
|
|
* text and attribute information.
|
|
* @param beginIndex The beginning index of the text subrange.
|
|
* @param endIndex The ending index of the text subrange.
|
|
*/
|
|
public AttributedString(AttributedCharacterIterator aci, int beginIndex,
|
|
int endIndex)
|
|
{
|
|
this(aci, beginIndex, endIndex, null);
|
|
}
|
|
|
|
/**
|
|
* Initializes a new instance of <code>AttributedString</code>
|
|
* that will use the text and attribute information from the specified
|
|
* subrange of the specified <code>AttributedCharacterIterator</code>.
|
|
* Only attributes from the source iterator that are present in the
|
|
* specified array of attributes will be included in the attribute list
|
|
* for this object.
|
|
*
|
|
* @param aci The <code>AttributedCharacterIterator</code> containing the
|
|
* text and attribute information.
|
|
* @param begin The beginning index of the text subrange.
|
|
* @param end The ending index of the text subrange.
|
|
* @param attributes A list of attributes to include from the iterator, or
|
|
* <code>null</code> to include all attributes.
|
|
*/
|
|
public AttributedString(AttributedCharacterIterator aci, int begin, int end,
|
|
Attribute[] attributes)
|
|
{
|
|
// Validate some arguments
|
|
if ((begin < 0) || (end < begin) || end > aci.getEndIndex())
|
|
throw new IllegalArgumentException("Bad index values");
|
|
|
|
CPStringBuilder sb = new CPStringBuilder("");
|
|
|
|
// Get the valid attribute list
|
|
Set<Attribute> allAttribs = aci.getAllAttributeKeys();
|
|
if (attributes != null)
|
|
allAttribs.retainAll(Arrays.asList(attributes));
|
|
|
|
// Loop through and extract the attributes
|
|
char c = aci.setIndex(begin);
|
|
|
|
ArrayList<AttributeRange> accum = new ArrayList<AttributeRange>();
|
|
do
|
|
{
|
|
sb.append(c);
|
|
|
|
Iterator<Attribute> iter = allAttribs.iterator();
|
|
while(iter.hasNext())
|
|
{
|
|
Object obj = iter.next();
|
|
|
|
// What should we do if this is not true?
|
|
if (!(obj instanceof Attribute))
|
|
continue;
|
|
|
|
Attribute attrib = (Attribute)obj;
|
|
|
|
// Make sure the attribute is defined.
|
|
Object attribObj = aci.getAttribute(attrib);
|
|
if (attribObj == null)
|
|
continue;
|
|
int rl = aci.getRunLimit(attrib);
|
|
if (rl > end)
|
|
rl = end;
|
|
rl -= begin;
|
|
|
|
// Check to see if we already processed this one
|
|
int rs = aci.getRunStart(attrib);
|
|
if ((rs < aci.getIndex()) && (aci.getIndex() != begin))
|
|
continue;
|
|
|
|
// If the attribute run starts before the beginning index, we
|
|
// need to junk it if it is an Annotation.
|
|
rs -= begin;
|
|
if (rs < 0)
|
|
{
|
|
if (attribObj instanceof Annotation)
|
|
continue;
|
|
|
|
rs = 0;
|
|
}
|
|
|
|
// Create a map object. Yes this will only contain one attribute
|
|
Map<Attribute,Object> newMap = new Hashtable<Attribute,Object>();
|
|
newMap.put(attrib, attribObj);
|
|
|
|
// Add it to the attribute list.
|
|
accum.add(new AttributeRange(newMap, rs, rl));
|
|
}
|
|
|
|
c = aci.next();
|
|
}
|
|
while( aci.getIndex() < end );
|
|
|
|
attribs = new AttributeRange[accum.size()];
|
|
attribs = accum.toArray(attribs);
|
|
|
|
sci = new StringCharacterIterator(sb.toString());
|
|
}
|
|
|
|
/**
|
|
* Adds a new attribute that will cover the entire string.
|
|
*
|
|
* @param attrib The attribute to add.
|
|
* @param value The value of the attribute.
|
|
*/
|
|
public void addAttribute(Attribute attrib, Object value)
|
|
{
|
|
addAttribute(attrib, value, 0, sci.getEndIndex());
|
|
}
|
|
|
|
/**
|
|
* Adds a new attribute that will cover the specified subrange
|
|
* of the string.
|
|
*
|
|
* @param attrib The attribute to add.
|
|
* @param value The value of the attribute, which may be <code>null</code>.
|
|
* @param begin The beginning index of the subrange.
|
|
* @param end The ending index of the subrange.
|
|
*
|
|
* @exception IllegalArgumentException If attribute is <code>null</code> or
|
|
* the subrange is not valid.
|
|
*/
|
|
public void addAttribute(Attribute attrib, Object value, int begin, int end)
|
|
{
|
|
if (attrib == null)
|
|
throw new IllegalArgumentException("null attribute");
|
|
if (end <= begin)
|
|
throw new IllegalArgumentException("Requires end > begin");
|
|
HashMap<Attribute,Object> hm = new HashMap<Attribute,Object>();
|
|
hm.put(attrib, value);
|
|
|
|
addAttributes(hm, begin, end);
|
|
}
|
|
|
|
/**
|
|
* Adds all of the attributes in the specified list to the
|
|
* specified subrange of the string.
|
|
*
|
|
* @param attributes The list of attributes.
|
|
* @param beginIndex The beginning index.
|
|
* @param endIndex The ending index
|
|
*
|
|
* @throws NullPointerException if <code>attributes</code> is
|
|
* <code>null</code>.
|
|
* @throws IllegalArgumentException if the subrange is not valid.
|
|
*/
|
|
public void addAttributes(Map<? extends Attribute, ?> attributes,
|
|
int beginIndex, int endIndex)
|
|
{
|
|
if (attributes == null)
|
|
throw new NullPointerException("null attribute");
|
|
|
|
if ((beginIndex < 0) || (endIndex > sci.getEndIndex()) ||
|
|
(endIndex <= beginIndex))
|
|
throw new IllegalArgumentException("bad range");
|
|
|
|
AttributeRange[] new_list = new AttributeRange[attribs.length + 1];
|
|
System.arraycopy(attribs, 0, new_list, 0, attribs.length);
|
|
attribs = new_list;
|
|
attribs[attribs.length - 1] = new AttributeRange(attributes, beginIndex,
|
|
endIndex);
|
|
}
|
|
|
|
/**
|
|
* Returns an <code>AttributedCharacterIterator</code> that
|
|
* will iterate over the entire string.
|
|
*
|
|
* @return An <code>AttributedCharacterIterator</code> for the entire string.
|
|
*/
|
|
public AttributedCharacterIterator getIterator()
|
|
{
|
|
return(new AttributedStringIterator(sci, attribs, 0, sci.getEndIndex(),
|
|
null));
|
|
}
|
|
|
|
/**
|
|
* Returns an <code>AttributedCharacterIterator</code> that
|
|
* will iterate over the entire string. This iterator will return information
|
|
* about the list of attributes in the specified array. Attributes not in
|
|
* the array may or may not be returned by the iterator. If the specified
|
|
* array is <code>null</code>, all attributes will be returned.
|
|
*
|
|
* @param attributes A list of attributes to include in the returned iterator.
|
|
*
|
|
* @return An <code>AttributedCharacterIterator</code> for this string.
|
|
*/
|
|
public AttributedCharacterIterator getIterator(Attribute[] attributes)
|
|
{
|
|
return(getIterator(attributes, 0, sci.getEndIndex()));
|
|
}
|
|
|
|
/**
|
|
* Returns an <code>AttributedCharacterIterator</code> that
|
|
* will iterate over the specified subrange. This iterator will return
|
|
* information about the list of attributes in the specified array.
|
|
* Attributes not in the array may or may not be returned by the iterator.
|
|
* If the specified array is <code>null</code>, all attributes will be
|
|
* returned.
|
|
*
|
|
* @param attributes A list of attributes to include in the returned iterator.
|
|
* @param beginIndex The beginning index of the subrange.
|
|
* @param endIndex The ending index of the subrange.
|
|
*
|
|
* @return An <code>AttributedCharacterIterator</code> for this string.
|
|
*/
|
|
public AttributedCharacterIterator getIterator(Attribute[] attributes,
|
|
int beginIndex, int endIndex)
|
|
{
|
|
if ((beginIndex < 0) || (endIndex > sci.getEndIndex()) ||
|
|
(endIndex < beginIndex))
|
|
throw new IllegalArgumentException("bad range");
|
|
|
|
return(new AttributedStringIterator(sci, attribs, beginIndex, endIndex,
|
|
attributes));
|
|
}
|
|
|
|
} // class AttributedString
|