Java javax.swing.text Class DefaultStyledDocument（JDK8）

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Java™ Platform
Standard Ed. 8

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Summary:
Nested |
Field |
Constr |
Method

Detail:
Field |
Constr |
Method

java.lang.Object
- javax.swing.text.AbstractDocument
- - javax.swing.text.DefaultStyledDocument

All Implemented Interfaces:

Serializable, Document, StyledDocument

Direct Known Subclasses:

HTMLDocument
```
public class DefaultStyledDocument
extends AbstractDocument
implements StyledDocument
```
A document that can be marked up with character and paragraph styles in a manner similar to the Rich Text Format. The element structure for this document represents style crossings for style runs. These style runs are mapped into a paragraph element structure (which may reside in some other structure). The style runs break at paragraph boundaries since logical styles are assigned to paragraph boundaries.
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.beans package. Please see XMLEncoder.

See Also:

Document, AbstractDocument

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`static class`	`DefaultStyledDocument.AttributeUndoableEdit` An UndoableEdit used to remember AttributeSet changes to an Element.
`class`	`DefaultStyledDocument.ElementBuffer` Class to manage changes to the element hierarchy.
`static class`	`DefaultStyledDocument.ElementSpec` Specification for building elements.
`protected class`	`DefaultStyledDocument.SectionElement` Default root element for a document...

Nested classes/interfaces inherited from class javax.swing.text.AbstractDocument
AbstractDocument.AbstractElement, AbstractDocument.AttributeContext, AbstractDocument.BranchElement, AbstractDocument.Content, AbstractDocument.DefaultDocumentEvent, AbstractDocument.ElementEdit, AbstractDocument.LeafElement

Field Summary

Fields
Modifier and Type	Field and Description
`protected DefaultStyledDocument.ElementBuffer`	`buffer`
`static int`	`BUFFER_SIZE_DEFAULT` The default size of the initial content buffer.

Fields inherited from class javax.swing.text.AbstractDocument
BAD_LOCATION, BidiElementName, ContentElementName, ElementNameAttribute, listenerList, ParagraphElementName, SectionElementName

Fields inherited from interface javax.swing.text.Document
StreamDescriptionProperty, TitleProperty

Constructor Summary

Constructors
Constructor and Description
`DefaultStyledDocument()` Constructs a default styled document.
`DefaultStyledDocument(AbstractDocument.Content c, StyleContext styles)` Constructs a styled document.
`DefaultStyledDocument(StyleContext styles)` Constructs a styled document with the default content storage implementation and a shared set of styles.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addDocumentListener(DocumentListener listener)` Adds a document listener for notification of any changes.
`Style`	`addStyle(String nm, Style parent)` Adds a new style into the logical style hierarchy.
`protected void`	`create(DefaultStyledDocument.ElementSpec[] data)` Initialize the document to reflect the given element structure (i.e.
`protected AbstractDocument.AbstractElement`	`createDefaultRoot()` Creates the root element to be used to represent the default document structure.
`Color`	`getBackground(AttributeSet attr)` Gets the background color from an attribute set.
`Element`	`getCharacterElement(int pos)` Gets a character element based on a position.
`Element`	`getDefaultRootElement()` Gets the default root element.
`Font`	`getFont(AttributeSet attr)` Gets the font from an attribute set.
`Color`	`getForeground(AttributeSet attr)` Gets the foreground color from an attribute set.
`Style`	`getLogicalStyle(int p)` Fetches the logical style assigned to the paragraph represented by the given position.
`Element`	`getParagraphElement(int pos)` Gets the paragraph element at the offset `pos`.
`Style`	`getStyle(String nm)` Fetches a named style previously added.
`Enumeration<?>`	`getStyleNames()` Fetches the list of of style names.
`protected void`	`insert(int offset, DefaultStyledDocument.ElementSpec[] data)` Inserts new elements in bulk.
`protected void`	`insertUpdate(AbstractDocument.DefaultDocumentEvent chng, AttributeSet attr)` Updates document structure as a result of text insertion.
`void`	`removeDocumentListener(DocumentListener listener)` Removes a document listener.
`void`	`removeElement(Element elem)` Removes an element from this document.
`void`	`removeStyle(String nm)` Removes a named style previously added to the document.
`protected void`	`removeUpdate(AbstractDocument.DefaultDocumentEvent chng)` Updates document structure as a result of text removal.
`void`	`setCharacterAttributes(int offset, int length, AttributeSet s, boolean replace)` Sets attributes for some part of the document.
`void`	`setLogicalStyle(int pos, Style s)` Sets the logical style to use for the paragraph at the given position.
`void`	`setParagraphAttributes(int offset, int length, AttributeSet s, boolean replace)` Sets attributes for a paragraph.
`protected void`	`styleChanged(Style style)` Called when any of this document's styles have changed.

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

Methods inherited from interface javax.swing.text.Document
addUndoableEditListener, createPosition, getEndPosition, getLength, getProperty, getRootElements, getStartPosition, getText, getText, insertString, putProperty, remove, removeUndoableEditListener, render

- Field Detail
  - BUFFER_SIZE_DEFAULT
```
public static final int BUFFER_SIZE_DEFAULT
```
    The default size of the initial content buffer.
    
    See Also:
    
    Constant Field Values
  - buffer
```
protected DefaultStyledDocument.ElementBuffer buffer
```
- Constructor Detail
  - DefaultStyledDocument
```
public DefaultStyledDocument(AbstractDocument.Content c,
                             StyleContext styles)
```
    Constructs a styled document.
    
    Parameters:
    
    c - the container for the content
    
    styles - resources and style definitions which may be shared across documents
  - DefaultStyledDocument
```
public DefaultStyledDocument(StyleContext styles)
```
    Constructs a styled document with the default content storage implementation and a shared set of styles.
    
    Parameters:
    
    styles - the styles
  - DefaultStyledDocument
```
public DefaultStyledDocument()
```
    Constructs a default styled document. This buffers input content by a size of BUFFER_SIZE_DEFAULT and has a style context that is scoped by the lifetime of the document and is not shared with other documents.
- Method Detail
  - getDefaultRootElement
```
public Element getDefaultRootElement()
```
    Gets the default root element.
    
    Specified by:
    
    getDefaultRootElement in interface Document
    
    Specified by:
    
    getDefaultRootElement in class AbstractDocument
    
    Returns:
    
    the root
    
    See Also:
    
    Document.getDefaultRootElement()
  - create
```
protected void create(DefaultStyledDocument.ElementSpec[] data)
```
    Initialize the document to reflect the given element structure (i.e. the structure reported by the getDefaultRootElement method. If the document contained any data it will first be removed.
  - insert
```
protected void insert(int offset,
                      DefaultStyledDocument.ElementSpec[] data)
               throws BadLocationException
```
    Inserts new elements in bulk. This is useful to allow parsing with the document in an unlocked state and prepare an element structure modification. This method takes an array of tokens that describe how to update an element structure so the time within a write lock can be greatly reduced in an asynchronous update situation.
    This method is thread safe, although most Swing methods are not. Please see Concurrency in Swing for more information.
    
    Parameters:
    
    offset - the starting offset >= 0
    
    data - the element data
    
    Throws:
    
    BadLocationException - for an invalid starting offset
  - removeElement
```
public void removeElement(Element elem)
```
    Removes an element from this document.
    The element is removed from its parent element, as well as the text in the range identified by the element. If the element isn't associated with the document, IllegalArgumentException is thrown.
    
    As empty branch elements are not allowed in the document, if the element is the sole child, its parent element is removed as well, recursively. This means that when replacing all the children of a particular element, new children should be added before removing old children.
    
    Element removal results in two events being fired, the DocumentEvent for changes in element structure and UndoableEditEvent for changes in document content.
    
    If the element contains end-of-content mark (the last "\n" character in document), this character is not removed; instead, preceding leaf element is extended to cover the character. If the last leaf already ends with "\n", it is included in content removal.
    
    If the element is null, NullPointerException is thrown. If the element structure would become invalid after the removal, for example if the element is the document root element, IllegalArgumentException is thrown. If the current element structure is invalid, IllegalStateException is thrown.
    
    Parameters:
    
    elem - the element to remove
    
    Throws:
    
    NullPointerException - if the element is null
    
    IllegalArgumentException - if the element could not be removed
    
    IllegalStateException - if the element structure is invalid
    
    Since:
    
    1.7
  - addStyle
```
public Style addStyle(String nm,
                      Style parent)
```
    Adds a new style into the logical style hierarchy. Style attributes resolve from bottom up so an attribute specified in a child will override an attribute specified in the parent.
    
    Specified by:
    
    addStyle in interface StyledDocument
    
    Parameters:
    
    nm - the name of the style (must be unique within the collection of named styles). The name may be null if the style is unnamed, but the caller is responsible for managing the reference returned as an unnamed style can't be fetched by name. An unnamed style may be useful for things like character attribute overrides such as found in a style run.
    
    parent - the parent style. This may be null if unspecified attributes need not be resolved in some other style.
    
    Returns:
    
    the style
  - removeStyle
```
public void removeStyle(String nm)
```
    Removes a named style previously added to the document.
    
    Specified by:
    
    removeStyle in interface StyledDocument
    
    Parameters:
    
    nm - the name of the style to remove
  - getStyle
```
public Style getStyle(String nm)
```
    Fetches a named style previously added.
    
    Specified by:
    
    getStyle in interface StyledDocument
    
    Parameters:
    
    nm - the name of the style
    
    Returns:
    
    the style
  - getStyleNames
```
public Enumeration<?> getStyleNames()
```
    Fetches the list of of style names.
    
    Returns:
    
    all the style names
  - setLogicalStyle
```
public void setLogicalStyle(int pos,
                            Style s)
```
    Sets the logical style to use for the paragraph at the given position. If attributes aren't explicitly set for character and paragraph attributes they will resolve through the logical style assigned to the paragraph, which in turn may resolve through some hierarchy completely independent of the element hierarchy in the document.
    This method is thread safe, although most Swing methods are not. Please see Concurrency in Swing for more information.
    
    Specified by:
    
    setLogicalStyle in interface StyledDocument
    
    Parameters:
    
    pos - the offset from the start of the document >= 0
    
    s - the logical style to assign to the paragraph, null if none
  - getLogicalStyle
```
public Style getLogicalStyle(int p)
```
    Fetches the logical style assigned to the paragraph represented by the given position.
    
    Specified by:
    
    getLogicalStyle in interface StyledDocument
    
    Parameters:
    
    p - the location to translate to a paragraph and determine the logical style assigned >= 0. This is an offset from the start of the document.
    
    Returns:
    
    the style, null if none
  - setCharacterAttributes
```
public void setCharacterAttributes(int offset,
                                   int length,
                                   AttributeSet s,
                                   boolean replace)
```
    Sets attributes for some part of the document. A write lock is held by this operation while changes are being made, and a DocumentEvent is sent to the listeners after the change has been successfully completed.
    This method is thread safe, although most Swing methods are not. Please see Concurrency in Swing for more information.
    
    Specified by:
    
    setCharacterAttributes in interface StyledDocument
    
    Parameters:
    
    offset - the offset in the document >= 0
    
    length - the length >= 0
    
    s - the attributes
    
    replace - true if the previous attributes should be replaced before setting the new attributes
  - setParagraphAttributes
```
public void setParagraphAttributes(int offset,
                                   int length,
                                   AttributeSet s,
                                   boolean replace)
```
    Sets attributes for a paragraph.
    This method is thread safe, although most Swing methods are not. Please see Concurrency in Swing for more information.
    
    Specified by:
    
    setParagraphAttributes in interface StyledDocument
    
    Parameters:
    
    offset - the offset into the paragraph >= 0
    
    length - the number of characters affected >= 0
    
    s - the attributes
    
    replace - whether to replace existing attributes, or merge them
  - getParagraphElement
```
public Element getParagraphElement(int pos)
```
    Gets the paragraph element at the offset pos. A paragraph consists of at least one child Element, which is usually a leaf.
    
    Specified by:
    
    getParagraphElement in interface StyledDocument
    
    Specified by:
    
    getParagraphElement in class AbstractDocument
    
    Parameters:
    
    pos - the starting offset >= 0
    
    Returns:
    
    the element
  - getCharacterElement
```
public Element getCharacterElement(int pos)
```
    Gets a character element based on a position.
    
    Specified by:
    
    getCharacterElement in interface StyledDocument
    
    Parameters:
    
    pos - the position in the document >= 0
    
    Returns:
    
    the element
  - insertUpdate
```
protected void insertUpdate(AbstractDocument.DefaultDocumentEvent chng,
                            AttributeSet attr)
```
    Updates document structure as a result of text insertion. This will happen within a write lock. This implementation simply parses the inserted content for line breaks and builds up a set of instructions for the element buffer.
    
    Overrides:
    
    insertUpdate in class AbstractDocument
    
    Parameters:
    
    chng - a description of the document change
    
    attr - the attributes
  - removeUpdate
```
protected void removeUpdate(AbstractDocument.DefaultDocumentEvent chng)
```
    Updates document structure as a result of text removal.
    
    Overrides:
    
    removeUpdate in class AbstractDocument
    
    Parameters:
    
    chng - a description of the document change
  - createDefaultRoot
```
protected AbstractDocument.AbstractElement createDefaultRoot()
```
    Creates the root element to be used to represent the default document structure.
    
    Returns:
    
    the element base
  - getForeground
```
public Color getForeground(AttributeSet attr)
```
    Gets the foreground color from an attribute set.
    
    Specified by:
    
    getForeground in interface StyledDocument
    
    Parameters:
    
    attr - the attribute set
    
    Returns:
    
    the color
  - getBackground
```
public Color getBackground(AttributeSet attr)
```
    Gets the background color from an attribute set.
    
    Specified by:
    
    getBackground in interface StyledDocument
    
    Parameters:
    
    attr - the attribute set
    
    Returns:
    
    the color
  - getFont
```
public Font getFont(AttributeSet attr)
```
    Gets the font from an attribute set.
    
    Specified by:
    
    getFont in interface StyledDocument
    
    Parameters:
    
    attr - the attribute set
    
    Returns:
    
    the font
  - styleChanged
```
protected void styleChanged(Style style)
```
    Called when any of this document's styles have changed. Subclasses may wish to be intelligent about what gets damaged.
    
    Parameters:
    
    style - The Style that has changed.
  - addDocumentListener
```
public void addDocumentListener(DocumentListener listener)
```
    Adds a document listener for notification of any changes.
    
    Specified by:
    
    addDocumentListener in interface Document
    
    Overrides:
    
    addDocumentListener in class AbstractDocument
    
    Parameters:
    
    listener - the listener
    
    See Also:
    
    Document.addDocumentListener(javax.swing.event.DocumentListener)
  - removeDocumentListener
```
public void removeDocumentListener(DocumentListener listener)
```
    Removes a document listener.
    
    Specified by:
    
    removeDocumentListener in interface Document
    
    Overrides:
    
    removeDocumentListener in class AbstractDocument
    
    Parameters:
    
    listener - the listener
    
    See Also:
    
    Document.removeDocumentListener(javax.swing.event.DocumentListener)

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Java™ Platform
Standard Ed. 8

All Classes

Summary:
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Field |
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Method

Detail:
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Method

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Java javax.swing.text Class DefaultStyledDocument（JDK8）

Class DefaultStyledDocument

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.text.AbstractDocument

Field Summary

Fields inherited from class javax.swing.text.AbstractDocument

Fields inherited from interface javax.swing.text.Document

Constructor Summary

Method Summary

Methods inherited from class javax.swing.text.AbstractDocument

Methods inherited from class java.lang.Object

Methods inherited from interface javax.swing.text.Document

Field Detail

BUFFER_SIZE_DEFAULT

buffer

Constructor Detail

DefaultStyledDocument

DefaultStyledDocument

DefaultStyledDocument

Method Detail

getDefaultRootElement

create

insert

removeElement

addStyle

removeStyle

getStyle

getStyleNames

setLogicalStyle

getLogicalStyle

setCharacterAttributes

setParagraphAttributes

getParagraphElement

getCharacterElement

insertUpdate

removeUpdate

createDefaultRoot

getForeground

getBackground

getFont

styleChanged

addDocumentListener

removeDocumentListener