- java.lang.Object
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- javax.swing.text.StringContent
 
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- 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™ has been added to the java.beanspackage. Please seeXMLEncoder.- See Also:
- Serialized Form
 
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Constructor SummaryConstructors Constructor 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 SummaryAll Methods Instance Methods Concrete Methods Modifier and Type Method Description PositioncreatePosition(int offset)Creates a position within the content that will track change as the content is mutated.voidgetChars(int where, int len, Segment chars)Retrieves a portion of the content.protected VectorgetPositionsInRange(Vector v, int offset, int length)Returns a Vector containing instances of UndoPosRef for the Positions in the rangeoffsettooffset+length.StringgetString(int where, int len)Retrieves a portion of the content.UndoableEditinsertString(int where, String str)Inserts a string into the content.intlength()Returns the length of the content.UndoableEditremove(int where, int nitems)Removes part of the content.protected voidupdateUndoPositions(Vector positions)Resets the location for all the UndoPosRef instances inpositions.
 
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Constructor Detail- 
StringContentpublic StringContent() Creates a new StringContent object. Initial size defaults to 10.
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StringContentpublic 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
 
 
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Method Detail- 
lengthpublic int length() Returns the length of the content.- Specified by:
- lengthin interface- AbstractDocument.Content
- Returns:
- the length >= 1
- See Also:
- AbstractDocument.Content.length()
 
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insertStringpublic UndoableEdit insertString(int where, String str) throws BadLocationException Inserts a string into the content.- Specified by:
- insertStringin 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)
 
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removepublic UndoableEdit remove(int where, int nitems) throws BadLocationException Removes part of the content. where + nitems must be < length().- Specified by:
- removein 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)
 
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getStringpublic String getString(int where, int len) throws BadLocationException Retrieves a portion of the content. where + len must be <= length().- Specified by:
- getStringin 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)
 
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getCharspublic void getChars(int where, int len, Segment chars) throws BadLocationExceptionRetrieves a portion of the content. where + len must be <= length()- Specified by:
- getCharsin 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)
 
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createPositionpublic Position createPosition(int offset) throws BadLocationException Creates a position within the content that will track change as the content is mutated.- Specified by:
- createPositionin interface- AbstractDocument.Content
- Parameters:
- offset- the offset to create a position for >= 0
- Returns:
- the position
- Throws:
- BadLocationException- if the specified position is invalid
 
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getPositionsInRangeprotected Vector getPositionsInRange(Vector v, int offset, int length) Returns a Vector containing instances of UndoPosRef for the Positions in the rangeoffsettooffset+length. Ifvis 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
 
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updateUndoPositionsprotected void updateUndoPositions(Vector positions) Resets the location for all the UndoPosRef instances inpositions.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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