gnu.jemacs.buffer
Class Buffer

java.lang.Object
  gnu.lists.AbstractSequence
      gnu.jemacs.buffer.Buffer

All Implemented Interfaces:

CharSeq, Consumable, Sequence, java.lang.CharSequence, java.lang.Iterable, java.util.Collection, java.util.List

Direct Known Subclasses:

SwingBuffer, SwtBuffer

public abstract class Buffer
extends AbstractSequence
implements CharSeq

Field Summary

EKeymap[]	activeKeymaps
static java.util.Hashtable	buffers Map buffer names to buffers.
static java.util.Hashtable	fileBuffers Map file names to buffer.s
Marker	markMarker
Marker	pointMarker

Fields inherited from interface gnu.lists.Sequence

ATTRIBUTE_VALUE, BOOLEAN_VALUE, CDATA_VALUE, CHAR_VALUE, COMMENT_VALUE, DOCUMENT_VALUE, DOUBLE_VALUE, EOF_VALUE, eofValue, FLOAT_VALUE, GROUP_VALUE, INT_S16_VALUE, INT_S32_VALUE, INT_S64_VALUE, INT_S8_VALUE, INT_U16_VALUE, INT_U32_VALUE, INT_U64_VALUE, INT_U8_VALUE, OBJECT_VALUE, PRIM_VALUE, PROCESSING_INSTRUCTION_VALUE, TEXT_BYTE_VALUE

Constructor Summary

Buffer(java.lang.String name)

Method Summary

void	backwardChar(int i)
char	charAt(int index)
int	charWidth(char ch, int column)
int	checkMark()
static Buffer	coerceBuffer(java.lang.Object buf)
void	consume(int start, int count, Consumer out)
int	countColumns(char[] chars, int start, int count, int initial)
int	currentColumn()
int	currentColumn(int offset) Return the column number at a specified offset.
EWindow	display(boolean notThisWindow, EFrame frame)
void	fill(char value) Set all the elements to a given character.
void	fill(int fromIndex, int toIndex, char value)
static Buffer	findFile(java.lang.String fname)
void	forwardChar(int i)
int	forwardLine(int lines)
long	forwardLine(int lines, int start) Find the position a give number of lines forward or backward.
static java.lang.String	generateNewBufferName(java.lang.String start)
static Buffer	getBuffer(java.lang.String name)
void	getChars(int srcBegin, int srcEnd, char[] dst, int dstBegin) Copy characters into a destination buffer.
static Buffer	getCurrent()
int	getDot()
java.lang.String	getFileName()
abstract int	getLength()
EKeymap	getLocalKeymap()
Marker	getMarkMarker(boolean force)
java.lang.String	getName()
int	getPoint()
Marker	getPointMarker(boolean share)
abstract CharSeq	getStringContent()
void	insert(char[] chars, int offset, int count, java.lang.Object style, int ipos) Insert character with given style at position pair.
void	insert(char ch, int count) Insert count copies of ch at point.
void	insert(char ch, int count, java.lang.Object style) Insert count copies of ch at point.
void	insert(java.lang.Object value, java.lang.Object style)
void	insert(java.lang.String string, java.lang.Object style)
abstract void	insert(java.lang.String string, java.lang.Object style, int ipos) Insert string with given style at position pair.
void	insertAll(java.lang.Object[] values, java.lang.Object style)
abstract void	insertFile(java.io.Reader in)
void	insertFile(java.lang.String filename)
abstract void	invoke(java.lang.Runnable doRun) This is intended for Runnable's that may affect the state of the buffer.
int	length() Get length of string, in characters.
int	lineStartOffset()
abstract int	lineStartOffset(int offset)
static void	makeBufferLocal(java.lang.Object symbol, boolean all)
abstract int	maxDot()
int	minDot()
int	moveToColumn(int column, boolean force)
abstract InPort	openReader(int start, int count)
int	positionToOffset(java.lang.Object position) Convert an Emacs position (Marker, or 1-origin integer) to a (0-origin) buffer offset.
abstract void	redrawModeline()
abstract void	removeAll()
void	removeChar(int count)
abstract void	restorePointMark(long pointMark)
void	save()
abstract void	save(java.io.Writer out)
abstract long	savePointMark()
abstract long	scan(char target, int start, int end, int count, boolean allowQuit) Search in BUF for COUNT instances of the character TARGET between START and END.
void	setCharAt(int index, char ch)
static void	setCurrent(Buffer buffer)
void	setDot(int i)
void	setFileName(java.lang.String fname)
void	setLocalKeymap(EKeymap map)
void	setPoint(int i)
java.lang.CharSequence	subSequence(int start, int end)
java.lang.String	toString()
void	writeTo(java.lang.Appendable dest)
void	writeTo(int start, int count, java.lang.Appendable dest) Append a specified subsequence to an Appendable.

Methods inherited from class gnu.lists.AbstractSequence

add, add, addAll, addAll, addPos, append, append, append, baseUriOfPos, clear, compare, compare, compare, consume, consumeNext, consumePosRange, contains, containsAll, copyPos, createPos, createRelativePos, elements, endPos, equals, equals, fill, fill, fillPosRange, firstAttributePos, firstChildPos, fromEndIndex, get, get, getAttribute, getAttributeLength, getContainingSequenceSize, getEffectiveIndex, getIndexDifference, getIterator, getIterator, getIteratorAtPos, getLowBound, getNextKind, getNextTypeName, getNextTypeObject, getPosNext, getPosPrevious, getSize, gotoAttributesStart, gotoChildrenStart, gotoParent, hashCode, hasNext, hasPrevious, indexOf, isAfterPos, isEmpty, iterator, lastIndexOf, listIterator, listIterator, nextIndex, nextIndex, nextMatching, nextPos, parentPos, previousPos, rank, releasePos, remove, remove, removeAll, removePos, removePosRange, retainAll, set, set, setPosNext, setPosPrevious, size, stableCompare, startPos, subList, subSequence, subSequencePos, toArray, toArray, toString, unsupported

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface gnu.lists.Sequence

elements, fill, get, isEmpty, size

Methods inherited from interface java.util.List

add, add, addAll, addAll, clear, contains, containsAll, equals, hashCode, indexOf, iterator, lastIndexOf, listIterator, listIterator, remove, remove, removeAll, retainAll, set, subList, toArray, toArray

Methods inherited from interface gnu.lists.Consumable

consume

Field Detail

pointMarker

public Marker pointMarker

markMarker

public Marker markMarker

buffers

public static java.util.Hashtable buffers

Map buffer names to buffers.

fileBuffers

public static java.util.Hashtable fileBuffers

Map file names to buffer.s

activeKeymaps

public EKeymap[] activeKeymaps

Constructor Detail

Buffer

public Buffer(java.lang.String name)

Method Detail

getName

public java.lang.String getName()

getFileName

public java.lang.String getFileName()

setFileName

public void setFileName(java.lang.String fname)

getStringContent

public abstract CharSeq getStringContent()

charAt

public char charAt(int index)

Specified by:

charAt in interface CharSeq

Specified by:

charAt in interface java.lang.CharSequence

See Also:

CharSeq.charAt(int)

setCharAt

public void setCharAt(int index,
                      char ch)

Specified by:

setCharAt in interface CharSeq

See Also:

CharSeq.setCharAt(int, char)

fill

public void fill(char value)

Description copied from interface: CharSeq

Set all the elements to a given character.

Specified by:

fill in interface CharSeq

See Also:

CharSeq.fill(char)

fill

public void fill(int fromIndex,
                 int toIndex,
                 char value)

Specified by:

fill in interface CharSeq

See Also:

CharSeq.fill(int, int, char)

getChars

public void getChars(int srcBegin,
                     int srcEnd,
                     char[] dst,
                     int dstBegin)

Description copied from interface: CharSeq

Copy characters into a destination buffer. Same interface as java.lang.String's getChars.

Specified by:

getChars in interface CharSeq

See Also:

CharSeq.getChars(int, int, char[], int)

subSequence

public java.lang.CharSequence subSequence(int start,
                                          int end)

Specified by:

subSequence in interface CharSeq

Specified by:

subSequence in interface java.lang.CharSequence

writeTo

public void writeTo(int start,
                    int count,
                    java.lang.Appendable dest)
             throws java.io.IOException

Description copied from interface: CharSeq

Append a specified subsequence to an Appendable. An allowable implementation is: dest.append(this, start, start+count). Hence implementors of Appendable should avoid calling writeTo - though they can call getChars.

Specified by:

writeTo in interface CharSeq

Throws:

java.io.IOException

See Also:

CharSeq.writeTo(int, int, Appendable)

writeTo

public void writeTo(java.lang.Appendable dest)
             throws java.io.IOException

Specified by:

writeTo in interface CharSeq

Throws:

java.io.IOException

consume

public void consume(int start,
                    int count,
                    Consumer out)

Specified by:

consume in interface CharSeq

See Also:

CharSeq.consume(int, int, gnu.lists.Consumer)

findFile

public static Buffer findFile(java.lang.String fname)

getBuffer

public static Buffer getBuffer(java.lang.String name)

coerceBuffer

public static Buffer coerceBuffer(java.lang.Object buf)

generateNewBufferName

public static java.lang.String generateNewBufferName(java.lang.String start)

redrawModeline

public abstract void redrawModeline()

checkMark

public int checkMark()

getCurrent

public static Buffer getCurrent()

setCurrent

public static void setCurrent(Buffer buffer)

getDot

public int getDot()

getPoint

public int getPoint()

setDot

public void setDot(int i)

setPoint

public final void setPoint(int i)

minDot

public int minDot()

getLength

public abstract int getLength()

length

public final int length()

Description copied from interface: CharSeq

Get length of string, in characters. Synonym for size(), for compatibility with String and StringBuffer.

Specified by:

length in interface CharSeq

Specified by:

length in interface java.lang.CharSequence

maxDot

public abstract int maxDot()

forwardChar

public void forwardChar(int i)

backwardChar

public void backwardChar(int i)

toString

public java.lang.String toString()

Specified by:

toString in interface CharSeq

Specified by:

toString in interface java.lang.CharSequence

Overrides:

toString in class AbstractSequence

insert

public abstract void insert(java.lang.String string,
                            java.lang.Object style,
                            int ipos)

Insert string with given style at position pair.

insert

public void insert(char[] chars,
                   int offset,
                   int count,
                   java.lang.Object style,
                   int ipos)

Insert character with given style at position pair.

insertAll

public void insertAll(java.lang.Object[] values,
                      java.lang.Object style)

insert

public void insert(java.lang.String string,
                   java.lang.Object style)

insert

public void insert(java.lang.Object value,
                   java.lang.Object style)

insert

public void insert(char ch,
                   int count)

Insert count copies of ch at point.

insert

public void insert(char ch,
                   int count,
                   java.lang.Object style)

Insert count copies of ch at point.

removeChar

public void removeChar(int count)

removeAll

public abstract void removeAll()

getPointMarker

public Marker getPointMarker(boolean share)

getMarkMarker

public Marker getMarkMarker(boolean force)

positionToOffset

public int positionToOffset(java.lang.Object position)

Convert an Emacs position (Marker, or 1-origin integer) to a (0-origin) buffer offset.

insertFile

public abstract void insertFile(java.io.Reader in)
                         throws java.lang.Exception

Throws:

java.lang.Exception

save

public abstract void save(java.io.Writer out)
                   throws java.lang.Exception

Throws:

java.lang.Exception

save

public void save()

insertFile

public void insertFile(java.lang.String filename)

charWidth

public int charWidth(char ch,
                     int column)

countColumns

public int countColumns(char[] chars,
                        int start,
                        int count,
                        int initial)

currentColumn

public int currentColumn()

currentColumn

public int currentColumn(int offset)

Return the column number at a specified offset.

moveToColumn

public int moveToColumn(int column,
                        boolean force)

lineStartOffset

public abstract int lineStartOffset(int offset)

lineStartOffset

public int lineStartOffset()

scan

public abstract long scan(char target,
                          int start,
                          int end,
                          int count,
                          boolean allowQuit)

Search in BUF for COUNT instances of the character TARGET between START and END. If COUNT is positive, search forwards; END must be >= START. If COUNT is negative, search backwards for the -COUNTth instance; END must be <= START. If COUNT is zero, do anything you please; run rogue, for all I care. If END is zero, use beginning or end of (FIXME: accessible part of) the buffer, as appropriate for the direction indicated by COUNT. If we find COUNT instances, SHORTAGE is zero, and return the position after the COUNTth match. Note that for reverse motion this is not the same as the usual convention for Emacs motion commands. If we don't find COUNT instances before reaching END, set SHORTAGE to the number of TARGETs left unfound, and return (shortage<<32|END).

Returns:

(SHORTAGE<<32|POS)

forwardLine

public final long forwardLine(int lines,
                              int start)

Find the position a give number of lines forward or backward. A side-effect-free version of Emacs's forward-line function.

Parameters:

lines - number of lines forward (or backward if negative)

start - initial position (buffer offset)

Returns:

(SHORTAGE<<32|POS)

forwardLine

public int forwardLine(int lines)

display

public EWindow display(boolean notThisWindow,
                       EFrame frame)

makeBufferLocal

public static void makeBufferLocal(java.lang.Object symbol,
                                   boolean all)

Parameters:

all - true if make-variable-buffer-local, false if make-local-variable FIXME

getLocalKeymap

public EKeymap getLocalKeymap()

setLocalKeymap

public void setLocalKeymap(EKeymap map)

openReader

public abstract InPort openReader(int start,
                                  int count)

savePointMark

public abstract long savePointMark()

restorePointMark

public abstract void restorePointMark(long pointMark)

invoke

public abstract void invoke(java.lang.Runnable doRun)

This is intended for Runnable's that may affect the state of the buffer. The implementation should make shure that the GUI is properly updated before control returns

Parameters:

doRun -