java.lang.Object
- javax.swing.text.StringContent

All Implemented Interfaces:

Serializable, AbstractDocument.Content
```
public final class StringContent
extends Object
implements AbstractDocument.Content, Serializable
```
An implementation of the AbstractDocument.Content interface that is a brute force implementation that is useful for relatively small documents and/or debugging. It manages the character content as a simple character array. It is also quite inefficient.
It is generally recommended that the gap buffer or piece table implementations be used instead. This buffer does not scale up to large sizes.
Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans^TM has been added to the java.beans package. Please see XMLEncoder.

Constructor Summary

Constructors
Constructor and Description
`StringContent()` Creates a new StringContent object.
`StringContent(int initialLength)` Creates a new StringContent object, with the initial size specified.

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Method Summary

Methods
Modifier and Type	Method and Description
`Position`	`createPosition(int offset)` Creates a position within the content that will track change as the content is mutated.
`void`	`getChars(int where, int len, Segment chars)` Retrieves a portion of the content.
`protected Vector`	`getPositionsInRange(Vector v, int offset, int length)` Returns a Vector containing instances of UndoPosRef for the Positions in the range `offset` to `offset` + `length`.
`String`	`getString(int where, int len)` Retrieves a portion of the content.
`UndoableEdit`	`insertString(int where, String str)` Inserts a string into the content.
`int`	`length()` Returns the length of the content.
`UndoableEdit`	`remove(int where, int nitems)` Removes part of the content.
`protected void`	`updateUndoPositions(Vector positions)` Resets the location for all the UndoPosRef instances in `positions`.

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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - StringContent
```
public StringContent()
```
    Creates a new StringContent object. Initial size defaults to 10.
  - StringContent
```
public StringContent(int initialLength)
```
    Creates a new StringContent object, with the initial size specified. If the length is < 1, a size of 1 is used.
    
    Parameters:
    initialLength - the initial size
- Method Detail
  - length
```
public int length()
```
    Returns the length of the content.
    
    Specified by:
    
    length in interface AbstractDocument.Content
    
    Returns:
    the length >= 1
    See Also:
    AbstractDocument.Content.length()
  - insertString
```
public UndoableEdit insertString(int where,
                        String str)
                          throws BadLocationException
```
    Inserts a string into the content.
    
    Specified by:
    
    insertString in interface AbstractDocument.Content
    
    Parameters:
    where - the starting position >= 0 && < length()
    str - the non-null string to insert
    
    Returns:
    an UndoableEdit object for undoing
    
    Throws:
    
    BadLocationException - if the specified position is invalid
    See Also:
    AbstractDocument.Content.insertString(int, java.lang.String)
  - remove
```
public UndoableEdit remove(int where,
                  int nitems)
                    throws BadLocationException
```
    Removes part of the content. where + nitems must be < length().
    
    Specified by:
    
    remove in interface AbstractDocument.Content
    
    Parameters:
    where - the starting position >= 0
    nitems - the number of characters to remove >= 0
    
    Returns:
    an UndoableEdit object for undoing
    
    Throws:
    
    BadLocationException - if the specified position is invalid
    See Also:
    AbstractDocument.Content.remove(int, int)
  - getString
```
public String getString(int where,
               int len)
                 throws BadLocationException
```
    Retrieves a portion of the content. where + len must be <= length().
    
    Specified by:
    
    getString in interface AbstractDocument.Content
    
    Parameters:
    where - the starting position >= 0
    len - the length to retrieve >= 0
    
    Returns:
    a string representing the content; may be empty
    
    Throws:
    
    BadLocationException - if the specified position is invalid
    See Also:
    AbstractDocument.Content.getString(int, int)
  - getChars
```
public void getChars(int where,
            int len,
            Segment chars)
              throws BadLocationException
```
    Retrieves a portion of the content. where + len must be <= length()
    
    Specified by:
    
    getChars in interface AbstractDocument.Content
    
    Parameters:
    where - the starting position >= 0
    len - the number of characters to retrieve >= 0
    chars - the Segment object to return the characters in
    
    Throws:
    
    BadLocationException - if the specified position is invalid
    See Also:
    AbstractDocument.Content.getChars(int, int, javax.swing.text.Segment)
  - createPosition
```
public Position createPosition(int offset)
                        throws BadLocationException
```
    Creates a position within the content that will track change as the content is mutated.
    
    Specified by:
    
    createPosition in interface AbstractDocument.Content
    
    Parameters:
    offset - the offset to create a position for >= 0
    
    Returns:
    the position
    
    Throws:
    
    BadLocationException - if the specified position is invalid
  - getPositionsInRange
```
protected Vector getPositionsInRange(Vector v,
                         int offset,
                         int length)
```
    Returns a Vector containing instances of UndoPosRef for the Positions in the range offset to offset + length. If v is not null the matching Positions are placed in there. The vector with the resulting Positions are returned.
    This is meant for internal usage, and is generally not of interest to subclasses.
    
    Parameters:
    v - the Vector to use, with a new one created on null
    offset - the starting offset >= 0
    length - the length >= 0
    
    Returns:
    the set of instances
  - updateUndoPositions
```
protected void updateUndoPositions(Vector positions)
```
    Resets the location for all the UndoPosRef instances in positions.
    This is meant for internal usage, and is generally not of interest to subclasses.
    
    Parameters:
    positions - the positions of the instances

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Bij voorbaat dank.

Document heeft de 11/06/2005 gemaakt, de laatste keer de 04/03/2020 gewijzigd
Bron van het afgedrukte document:https://www.gaudry.be/nl/java-api-rf-javax/swing/text/stringcontent.html

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Referenties

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Inhoudsopgave Haut

Class StringContent

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

StringContent

StringContent

Method Detail

length

insertString

remove

getString

getChars

createPosition

getPositionsInRange

updateUndoPositions

Referenties