/*
* Sun Public License Notice
*
* The contents of this file are subject to the Sun Public License
* Version 1.0 (the "License"). You may not use this file except in
* compliance with the License. A copy of the License is available at
* http://www.sun.com/
*
* The Original Code is NetBeans. The Initial Developer of the Original
* Code is Sun Microsystems, Inc. Portions Copyright 1997-2003 Sun
* Microsystems, Inc. All Rights Reserved.
*/
package org.netbeans.editor;
import javax.swing.event.DocumentEvent;
import javax.swing.event.EventListenerList;
import javax.swing.event.UndoableEditEvent;
import javax.swing.text.*;
import javax.swing.undo.CannotRedoException;
import javax.swing.undo.CannotUndoException;
import javax.swing.undo.CompoundEdit;
import javax.swing.undo.UndoableEdit;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.IOException;
import java.io.Reader;
import java.io.Writer;
import java.util.*;
/**
* Document implementation
*
* @author Miloslav Metelka
* @version 1.00
*/
public class BaseDocument extends AbstractDocument implements SettingsChangeListener, AtomicLockDocument {
/** Registry identification property */
public static final String ID_PROP = "id"; // NOI18N
/** Line separator property for reading files in */
public static final String READ_LINE_SEPARATOR_PROP
= DefaultEditorKit.EndOfLineStringProperty;
/** Line separator property for writing content into files. If not set
* the writing defaults to the READ_LINE_SEPARATOR_PROP.
*/
public static final String WRITE_LINE_SEPARATOR_PROP
= "write-line-separator"; // NOI18N
/** File name property */
public static final String FILE_NAME_PROP = "file-name"; // NOI18N
/** Wrap search mark property */
public static final String WRAP_SEARCH_MARK_PROP = "wrap-search-mark"; // NOI18N
/** Undo manager property. This can be used to implement undo
* in a simple way. Default undo and redo actions try to get this
* property and perform undo and redo through it.
*/
public static final String UNDO_MANAGER_PROP = "undo-manager"; // NOI18N
/** Kit class property. This can become useful for getting
* the settings that logicaly belonging to the document.
*/
public static final String KIT_CLASS_PROP = "kit-class"; // NOI18N
/** String forward finder property */
public static final String STRING_FINDER_PROP = "string-finder"; // NOI18N
/** String backward finder property */
public static final String STRING_BWD_FINDER_PROP = "string-bwd-finder"; // NOI18N
/** Highlight search finder property. */
public static final String BLOCKS_FINDER_PROP = "blocks-finder"; // NOI18N
/** Maximum line width encountered during the initial read operation.
* This is filled by Analyzer and used by UI to set the correct initial width
* of the component.
* Values: java.lang.Integer
*/
public static final String LINE_LIMIT_PROP = "line-limit"; // NOI18N
/** Size of the line batch. Line batch can be used at various places
* especially when processing lines by syntax scanner.
*/
public static final String LINE_BATCH_SIZE = "line-batch-size"; // NOI18N
/** Line separator is marked by CR (Macintosh) */
public static final String LS_CR = "\r"; // NOI18N
/** Line separator is marked by LF (Unix) */
public static final String LS_LF = "\n"; // NOI18N
/** Line separator is marked by CR and LF (Windows) */
public static final String LS_CRLF = "\r\n"; // NOI18N
/** Maximum of concurrent read threads (other will wait until
* one of these will leave).
*/
private static final int MAX_READ_THREADS = 10;
/** Write lock without write lock */
private static final String WRITE_LOCK_MISSING
= "extWriteUnlock() without extWriteLock()"; // NOI18N
/** Debug modifications performed on the document */
private static final boolean debug
= Boolean.getBoolean("netbeans.debug.editor.document"); // NOI18N
/** Debug the stack of calling of the insert/remove */
private static final boolean debugStack
= Boolean.getBoolean("netbeans.debug.editor.document.stack"); // NOI18N
/** How many spaces should be displayed instead of '\t' character */
private int tabSize = SettingsDefaults.defaultTabSize.intValue();
/** Size of one indentation level. If this variable is null (value
* is not set in Settings, then the default algorithm will be used.
*/
private Integer shiftWidth;
/** How many times current writer requested writing */
private int writeDepth;
/** How many times atomic writer requested writing */
private int atomicDepth;
/* Was the document initialized by reading? */
protected boolean inited;
/* Was the document modified by doing inert/remove */
protected boolean modified;
/** Listener list */
protected EventListenerList listenerList = new EventListenerList();
/** Listener to changes in find support */
PropertyChangeListener findSupportListener;
/** Default element - lazily inited */
protected BaseElement defaultRootElem;
private SyntaxSupport syntaxSupport;
/** Layer list for document level layers */
private DrawLayerList drawLayerList = new DrawLayerList();
/** Chain of document level bookmarks */
private MarkChain bookmarkChain;
/** Reset merging next created undoable edit to the last one. */
boolean undoMergeReset;
/** Kit class stored here */
Class kitClass;
/** Undo event for atomic events is fired after the successful
* atomic operation is finished. The changes are stored in this variable
* during the atomic operation. If the operation is broken, these edits
* are used to restore previous state.
*/
private AtomicCompoundEdit atomicEdits;
private Acceptor identifierAcceptor;
private Acceptor whitespaceAcceptor;
private ArrayList syntaxList = new ArrayList();
/** List of the positions used by storePosition() */
private ArrayList posList = new ArrayList();
/** List of the integers marking the free positions in the posList. */
private ArrayList posFreeList = new ArrayList();
/** Root element of line elements representation */
protected LineRootElement lineRootElement;
/** Last document event to be undone. The field is filled
* by the lastly done modification undoable edit.
* BaseDocumentEvent.canUndo() checks this flag.
*/
UndoableEdit lastModifyUndoEdit; // #8692 check last modify undo edit
/** List of annotations for this document. */
private Annotations annotations;
/** List of bookmarks attached to this document */
private Bookmarks bookmarks;
/* Bug #6258 during composing I18N text using input method the Undoable Edit
* actions must be disabled so only the final push (and not all intermediate
* ones) of the I18N word will be stored as undoable edit.
*/
private boolean composedText = false;
/**
* Map of [multi-mark, Mark-instance] pairs.
* These multi-marks need to be stored separately and not be undone/redone.
*/
final Map marks = new HashMap();
final MarkVector marksStorage = new MarkVector();
/** Finder for visual x-coord to position conversion */
private FinderFactory.VisColPosFwdFinder visColPosFwdFinder;
/** Finder for position to x-coord conversion */
private FinderFactory.PosVisColFwdFinder posVisColFwdFinder;
/** Atomic lock event instance shared by all the atomic lock firings done for this document */
private AtomicLockEvent atomicLockEventInstance = new AtomicLockEvent(this);
/** Create base document with a specified syntax.
* @param kitClass class used to initialize this document with proper settings
* category based on the editor kit for which this document is created
* @param syntax syntax scanner to use with this document
*/
public BaseDocument(Class kitClass, boolean addToRegistry) {
super(new DocumentContent());
this.kitClass = kitClass;
getDocumentContent().setBaseDocument(this); // necessary for fixing of the syntax state infos
setDocumentProperties(new LazyPropertyMap(getDocumentProperties()));
putProperty(GapStart.class, getDocumentContent());
lineRootElement = new LineRootElement(this);
settingsChange(null); // initialize variables from settings
Settings.addSettingsChangeListener(this);
// Line separators default to platform ones
putProperty(READ_LINE_SEPARATOR_PROP, Analyzer.getPlatformLS());
bookmarkChain = new MarkChain(this, DrawLayerFactory.BOOKMARK_LAYER_NAME);
// Add document draw-layers
addLayer(new DrawLayerFactory.SyntaxLayer(),
DrawLayerFactory.SYNTAX_LAYER_VISIBILITY);
addLayer(new DrawLayerFactory.HighlightSearchLayer(),
DrawLayerFactory.HIGHLIGHT_SEARCH_LAYER_VISIBILITY);
addLayer(new DrawLayerFactory.BookmarkLayer(),
DrawLayerFactory.BOOKMARK_LAYER_VISIBILITY);
// Additional initialization of the document through the kit
BaseKit kit = BaseKit.getKit(kitClass);
if (kit != null) {
kit.initDocument(this);
}
// Possibly add the document to registry
if (addToRegistry) {
Registry.addDocument(this); // add if created thru the kit
}
// Start listen on find-support
findSupportListener = new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent evt) {
findSupportChange(evt);
}
};
FindSupport.getFindSupport().addPropertyChangeListener(findSupportListener);
findSupportChange(null); // update doc by find settings
}
private DocumentContent getDocumentContent() {
return (DocumentContent)getContent();
}
public CharSeq getText() {
return getDocumentContent();
}
private void findSupportChange(PropertyChangeEvent evt) {
// set all finders to null
putProperty(STRING_FINDER_PROP, null);
putProperty(STRING_BWD_FINDER_PROP, null);
putProperty(BLOCKS_FINDER_PROP, null);
DrawLayerFactory.HighlightSearchLayer hsl
= (DrawLayerFactory.HighlightSearchLayer)findLayer(
DrawLayerFactory.HIGHLIGHT_SEARCH_LAYER_NAME);
Boolean b = (Boolean)FindSupport.getFindSupport().getPropertyNoInit(
SettingsNames.FIND_HIGHLIGHT_SEARCH);
hsl.setEnabled((b != null) ? b.booleanValue() : false);
fireChangedUpdate(createDocumentEvent(0, getLength(),
DocumentEvent.EventType.CHANGE)); // refresh whole document
}
/** Called when settings were changed. The method is called
* also in constructor, so the code must count with the evt being null.
*/
public void settingsChange(SettingsChangeEvent evt) {
String settingName = (evt != null) ? evt.getSettingName() : null;
if (settingName == null || SettingsNames.TAB_SIZE.equals(settingName)) {
tabSize = SettingsUtil.getPositiveInteger(kitClass, SettingsNames.TAB_SIZE,
SettingsDefaults.defaultTabSize);
}
if (settingName == null || SettingsNames.INDENT_SHIFT_WIDTH.equals(settingName)) {
Object shw = Settings.getValue(kitClass, SettingsNames.INDENT_SHIFT_WIDTH);
if (shw instanceof Integer) { // currently only Integer values are supported
shiftWidth = (Integer)shw;
}
}
if (settingName == null || SettingsNames.READ_BUFFER_SIZE.equals(settingName)) {
int readBufferSize = SettingsUtil.getPositiveInteger(kitClass,
SettingsNames.READ_BUFFER_SIZE, SettingsDefaults.defaultReadBufferSize);
putProperty(SettingsNames.READ_BUFFER_SIZE, new Integer(readBufferSize));
}
if (settingName == null || SettingsNames.WRITE_BUFFER_SIZE.equals(settingName)) {
int writeBufferSize = SettingsUtil.getPositiveInteger(kitClass,
SettingsNames.WRITE_BUFFER_SIZE, SettingsDefaults.defaultWriteBufferSize);
putProperty(SettingsNames.WRITE_BUFFER_SIZE, new Integer(writeBufferSize));
}
if (settingName == null || SettingsNames.MARK_DISTANCE.equals(settingName)) {
int markDistance = SettingsUtil.getPositiveInteger(kitClass,
SettingsNames.MARK_DISTANCE, SettingsDefaults.defaultMarkDistance);
putProperty(SettingsNames.MARK_DISTANCE, new Integer(markDistance));
}
if (settingName == null || SettingsNames.MAX_MARK_DISTANCE.equals(settingName)) {
int maxMarkDistance = SettingsUtil.getPositiveInteger(kitClass,
SettingsNames.MAX_MARK_DISTANCE, SettingsDefaults.defaultMaxMarkDistance);
putProperty(SettingsNames.MAX_MARK_DISTANCE, new Integer(maxMarkDistance));
}
if (settingName == null || SettingsNames.MIN_MARK_DISTANCE.equals(settingName)) {
int minMarkDistance = SettingsUtil.getPositiveInteger(kitClass,
SettingsNames.MIN_MARK_DISTANCE, SettingsDefaults.defaultMinMarkDistance);
putProperty(SettingsNames.MIN_MARK_DISTANCE, new Integer(minMarkDistance));
}
if (settingName == null || SettingsNames.READ_MARK_DISTANCE.equals(settingName)) {
int readMarkDistance = SettingsUtil.getPositiveInteger(kitClass,
SettingsNames.READ_MARK_DISTANCE, SettingsDefaults.defaultReadMarkDistance);
putProperty(SettingsNames.READ_MARK_DISTANCE, new Integer(readMarkDistance));
}
if (settingName == null || SettingsNames.SYNTAX_UPDATE_BATCH_SIZE.equals(settingName)) {
int syntaxUpdateBatchSize = SettingsUtil.getPositiveInteger(kitClass,
SettingsNames.SYNTAX_UPDATE_BATCH_SIZE, SettingsDefaults.defaultSyntaxUpdateBatchSize);
putProperty(SettingsNames.SYNTAX_UPDATE_BATCH_SIZE, new Integer(syntaxUpdateBatchSize));
}
if (settingName == null || SettingsNames.LINE_BATCH_SIZE.equals(settingName)) {
int lineBatchSize = SettingsUtil.getPositiveInteger(kitClass,
SettingsNames.LINE_BATCH_SIZE, SettingsDefaults.defaultLineBatchSize);
putProperty(SettingsNames.LINE_BATCH_SIZE, new Integer(lineBatchSize));
}
if (settingName == null || SettingsNames.IDENTIFIER_ACCEPTOR.equals(settingName)) {
identifierAcceptor = SettingsUtil.getAcceptor(kitClass,
SettingsNames.IDENTIFIER_ACCEPTOR, AcceptorFactory.LETTER_DIGIT);
}
if (settingName == null || SettingsNames.WHITESPACE_ACCEPTOR.equals(settingName)) {
whitespaceAcceptor = SettingsUtil.getAcceptor(kitClass,
SettingsNames.WHITESPACE_ACCEPTOR, AcceptorFactory.WHITESPACE);
}
boolean stopOnEOL = SettingsUtil.getBoolean(kitClass,
SettingsNames.WORD_MOVE_NEWLINE_STOP, true);
if (settingName == null || SettingsNames.NEXT_WORD_FINDER.equals(settingName)) {
putProperty(SettingsNames.NEXT_WORD_FINDER,
SettingsUtil.getValue(kitClass, SettingsNames.NEXT_WORD_FINDER,
new FinderFactory.NextWordFwdFinder(this, stopOnEOL, false)));
}
if (settingName == null || SettingsNames.PREVIOUS_WORD_FINDER.equals(settingName)) {
putProperty(SettingsNames.PREVIOUS_WORD_FINDER,
SettingsUtil.getValue(kitClass, SettingsNames.PREVIOUS_WORD_FINDER,
new FinderFactory.PreviousWordBwdFinder(this, stopOnEOL, false)));
}
}
Syntax getFreeSyntax() {
synchronized (syntaxList) {
int cnt = syntaxList.size();
return (cnt > 0) ? (Syntax)syntaxList.remove(cnt - 1)
: BaseKit.getKit(kitClass).createSyntax(this);
}
}
void releaseSyntax(Syntax syntax) {
synchronized (syntaxList) {
syntaxList.add(syntax);
}
}
/** Get the formatter for this document. */
public Formatter getFormatter() {
return Formatter.getFormatter(kitClass);
}
public SyntaxSupport getSyntaxSupport() {
if (syntaxSupport == null) {
syntaxSupport = BaseKit.getKit(kitClass).createSyntaxSupport(this);
}
return syntaxSupport;
}
/** Perform any generic text processing. The advantage of this method
* is that it allows the text to processed in line batches. The initial
* size of the batch is given by the SettingsNames.LINE_BATCH_SIZE.
* The TextBatchProcessor.processTextBatch() method is called for every
* text batch. If the method returns true, it means the processing should
* continue with the next batch of text which will have double line count
* compared to the previous one. This guarantees there will be not too many
* batches so the processing should be more efficient.
* @param tbp text batch processor to be used to process the text batches
* @param startPos starting position of the processing.
* @param endPos ending position of the processing. This can be -1 to signal
* the end of document. If the endPos is lower than startPos then the batches
* are created in the backward direction.
* @return the returned value from the last tpb.processTextBatch() call.
* The -1 will be returned for (startPos == endPos).
*/
public int processText(TextBatchProcessor tbp, int startPos, int endPos)
throws BadLocationException {
if (endPos == -1) {
endPos = getLength();
}
int batchLineCnt = ((Integer)getProperty(SettingsNames.LINE_BATCH_SIZE)).intValue();
int batchStart = startPos;
int ret = -1;
if (startPos < endPos) { // batching in forward direction
while (ret < 0 && batchStart < endPos) {
int batchEnd = Math.min(Utilities.getRowStart(this, batchStart, batchLineCnt), endPos);
if (batchEnd == -1) { // getRowStart() returned -1
batchEnd = endPos;
}
ret = tbp.processTextBatch(this, batchStart, batchEnd, (batchEnd == endPos));
batchLineCnt *= 2; // double the scanned area
batchStart = batchEnd;
}
} else {
while (ret < 0 && batchStart > endPos) {
int batchEnd = Math.max(Utilities.getRowStart(this, batchStart, -batchLineCnt), endPos);
ret = tbp.processTextBatch(this, batchStart, batchEnd, (batchEnd == endPos));
batchLineCnt *= 2; // double the scanned area
batchStart = batchEnd;
}
}
return ret;
}
public boolean isIdentifierPart(char ch) {
return identifierAcceptor.accept(ch);
}
public boolean isWhitespace(char ch) {
return whitespaceAcceptor.accept(ch);
}
/** Create the mark for the given position
* and store it in the list. The position can
* be later retrieved through its ID.
*/
int storePosition(int pos) throws BadLocationException {
MultiMark mark = getDocumentContent().createBiasMark(pos, Position.Bias.Forward);
int ind;
if (posFreeList.size() > 0) {
ind = ((Integer)posFreeList.remove(posFreeList.size() - 1)).intValue();
posList.set(ind, mark);
} else { // no free indexes
ind = posList.size();
posList.add(mark);
}
return ind;
}
int getStoredPosition(int posID) {
if (posID < 0 || posID >= posList.size()) {
return -1;
}
MultiMark mark = (MultiMark)posList.get(posID);
return (mark != null) ? mark.getOffset() : -1;
}
void removeStoredPosition(int posID) {
if (posID >= 0 || posID < posList.size()) {
Mark mark = (Mark)posList.get(posID);
posList.set(posID, null); // clear the index
posFreeList.add(new Integer(posID));
// Remove the mark #19429
try {
mark.remove();
} catch (InvalidMarkException e) {
}
}
}
/** Inserts string into document */
public void insertString(int offset, String text, AttributeSet a)
throws BadLocationException {
if (text == null || text.length() == 0) {
return;
}
// Check offset correctness
if (offset < 0 || offset > getLength()) {
throw new BadLocationException("Wrong insert position", offset); // NOI18N
}
// possible CR-LF conversion
text = Analyzer.convertLSToLF(text);
// Perform the insert
extWriteLock();
try {
preInsertCheck(offset, text, a);
// Do the real insert into the content
UndoableEdit edit = getContent().insertString(offset, text);
if (debug) {
System.err.println("BaseDocument.insertString(): doc=" + this // NOI18N
+ (modified ? "" : " - first modification") // NOI18N
+ ", offset=" + offset // NOI18N
+ ", text='" + text + "'" // NOI18N
);
}
if (debugStack) {
Thread.dumpStack();
}
BaseDocumentEvent evt = createDocumentEvent(offset, text.length(), DocumentEvent.EventType.INSERT);
if (edit != null) {
evt.addEdit(edit);
lastModifyUndoEdit = edit; // #8692 check last modify undo edit
}
modified = true;
if (atomicDepth > 0) {
if (atomicEdits == null) {
atomicEdits = new AtomicCompoundEdit();
}
atomicEdits.addEdit(evt); // will be added
}
insertUpdate(evt, a);
evt.end();
fireInsertUpdate(evt);
boolean isComposedText = ((a != null)
&& (a.isDefined(StyleConstants.ComposedTextAttribute)));
if (composedText && !isComposedText)
composedText = false;
if (!composedText && isComposedText)
composedText = true;
if (atomicDepth == 0 && !isComposedText) { // !!! check
fireUndoableEditUpdate(new UndoableEditEvent(this, evt));
}
} finally {
extWriteUnlock();
}
}
/** Removes portion of a document */
public void remove(int offset, int len) throws BadLocationException {
if (len > 0) {
extWriteLock();
try {
int docLen = getLength();
if (offset < 0 || offset > docLen) {
throw new BadLocationException("Wrong remove position", offset); // NOI18N
}
if (offset + len > docLen) {
throw new BadLocationException("End offset of removed text "
+ (offset + len) + " > getLength()=" + docLen,
offset + len
); // NOI18N
}
preRemoveCheck(offset, len);
BaseDocumentEvent evt = createDocumentEvent(offset, len, DocumentEvent.EventType.REMOVE);
removeUpdate(evt);
UndoableEdit edit = getContent().remove(offset, len);
if (edit != null) {
evt.addEdit(edit);
lastModifyUndoEdit = edit; // #8692 check last modify undo edit
}
if (debug) {
System.err.println("BaseDocument.remove(): doc=" + this // NOI18N
+ ", offset=" + offset + ", len=" + len); // NOI18N
}
if (debugStack) {
Thread.dumpStack();
}
if (atomicDepth > 0) { // add edits as soon as possible
if (atomicEdits == null) {
atomicEdits = new AtomicCompoundEdit();
}
atomicEdits.addEdit(evt); // will be added
}
postRemoveUpdate(evt);
evt.end();
fireRemoveUpdate(evt);
if (atomicDepth == 0 && !composedText) {
fireUndoableEditUpdate(new UndoableEditEvent(this, evt));
}
} finally {
extWriteUnlock();
}
}
}
/** This method is called automatically before the document
* insertion occurs and can be used to revoke the insertion before it occurs
* by throwing the <tt>BadLocationException</tt>.
* @param offset position where the insertion will be done
* @param text string to be inserted
* @param a attributes of the inserted text
*/
protected void preInsertCheck(int offset, String text, AttributeSet a)
throws BadLocationException {
}
/** This method is called automatically before the document
* removal occurs and can be used to revoke the removal before it occurs
* by throwing the <tt>BadLocationException</tt>.
* @param offset position where the insertion will be done
* @param len length of the removal
*/
protected void preRemoveCheck(int offset, int len)
throws BadLocationException {
}
public String getText(int[] block) throws BadLocationException {
return getText(block[0], block[1] - block[0]);
}
/**
* @param pos position of the first character to get.
* @param len number of characters to obtain.
* @return array with the requested characters.
*/
public char[] getChars(int pos, int len) throws BadLocationException {
char[] chars = new char[len];
getChars(pos, chars, 0, len);
return chars;
}
/**
* @param block two-element array with starting and ending offset
* @return array with the requested characters.
*/
public char[] getChars(int[] block) throws BadLocationException {
return getChars(block[0], block[1] - block[0]);
}
/**
* @param pos position of the first character to get.
* @param ret destination array
* @param offset offset in the destination array.
* @param len number of characters to obtain.
* @return array with the requested characters.
*/
public void getChars(int pos, char ret[], int offset, int len)
throws BadLocationException {
DocumentUtilities.copyText(this, pos, pos + len, ret, offset);
}
/** Find something in document using a finder.
* @param finder finder to be used for the search
* @param startPos position in the document where the search will start
* @param limitPos position where the search will be end with reporting
* that nothing was found.
*/
public int find(Finder finder, int startPos, int limitPos)
throws BadLocationException {
int docLen = getLength();
if (limitPos == -1) {
limitPos = docLen;
}
if (startPos == -1) {
startPos = docLen;
}
if (finder instanceof AdjustFinder) {
if (startPos == limitPos) { // stop immediately
finder.reset(); // reset() should be called in all the cases
return -1; // must stop here because wouldn't know if fwd/bwd search?
}
boolean forwardAdjustedSearch = (startPos < limitPos);
startPos = ((AdjustFinder)finder).adjustStartPos(this, startPos);
limitPos = ((AdjustFinder)finder).adjustLimitPos(this, limitPos);
boolean voidSearch = (forwardAdjustedSearch ? (startPos >= limitPos) : (startPos <= limitPos));
if (voidSearch) {
finder.reset();
return -1;
}
}
finder.reset();
if (startPos == limitPos) {
return -1;
}
Segment text = DocumentUtilities.SEGMENT_CACHE.getSegment();
try {
int gapStart = DocumentUtilities.getGapStart(this);
if (gapStart == -1) {
throw new IllegalStateException("Cannot get gapStart");
}
int pos = startPos; // pos at which the search starts (continues)
boolean fwdSearch = (startPos <= limitPos); // forward search
if (fwdSearch) {
while (pos >= startPos && pos < limitPos) {
int p0; // low bound
int p1; // upper bound
if (pos < gapStart) { // part below gap
p0 = startPos;
p1 = Math.min(gapStart, limitPos);
} else { // part above gap
p0 = Math.max(gapStart, startPos);
p1 = limitPos;
}
getText(p0, p1 - p0, text);
pos = finder.find(p0 - text.offset, text.array,
text.offset, text.offset + text.count, pos, limitPos);
if (finder.isFound()) {
return pos;
}
}
} else { // backward search limitPos < startPos
pos--; // start one char below the upper bound
while (limitPos <= pos && pos <= startPos) {
int p0; // low bound
int p1; // upper bound
if (pos < gapStart) { // part below gap
p0 = limitPos;
p1 = Math.min(gapStart, startPos);
} else { // part above gap
p0 = Math.max(gapStart, limitPos);
p1 = startPos;
}
getText(p0, p1 - p0, text);
pos = finder.find(p0 - text.offset, text.array,
text.offset, text.offset + text.count, pos, limitPos);
if (finder.isFound()) {
return pos;
}
}
}
return -1; // position outside bounds => not found
} finally {
DocumentUtilities.SEGMENT_CACHE.releaseSegment(text);
}
}
/** Fire the change event to repaint the given block of text. */
public void repaintBlock(int startOffset, int endOffset) {
BaseDocumentEvent evt = createDocumentEvent(startOffset,
endOffset - startOffset, DocumentEvent.EventType.CHANGE);
fireChangedUpdate(evt);
}
public void print(PrintContainer container) {
readLock();
try {
EditorUI editorUI = BaseKit.getKit(kitClass).createPrintEditorUI(this);
DrawGraphics.PrintDG printDG = new DrawGraphics.PrintDG(container);
DrawEngine.getDrawEngine().draw(printDG, editorUI, 0, getLength(), 0, 0, Integer.MAX_VALUE);
} catch (BadLocationException e) {
e.printStackTrace();
} finally {
readUnlock();
}
}
/** Create biased position in document */
public Position createPosition(int offset, Position.Bias bias)
throws BadLocationException {
return getDocumentContent().createBiasPosition(offset, bias);
}
MultiMark createMark(int offset) throws BadLocationException {
return getDocumentContent().createMark(offset);
}
MultiMark createBiasMark(int offset, Position.Bias bias) throws BadLocationException {
return getDocumentContent().createBiasMark(offset, bias);
}
/** Return array of root elements - usually only one */
public Element[] getRootElements() {
Element[] elems = new Element[1];
elems[0] = getDefaultRootElement();
return elems;
}
/** Return default root element */
public Element getDefaultRootElement() {
if (defaultRootElem == null) {
defaultRootElem = new org.netbeans.editor.LeafElement(this, null, null, 0, getLength(), false, false);
}
return defaultRootElem;
}
/** Runs the runnable under read lock. */
public void render(Runnable r) {
readLock();
try {
r.run();
} finally {
readUnlock();
}
}
/** Runs the runnable under write lock. This is a stronger version
* of the runAtomicAsUser() method, because if there any locked sections
* in the documents this methods breaks the modification locks and modifies
* the document.
* If there are any excpeptions thrown during the processing of the runnable,
* all the document modifications are rolled back automatically.
*/
public void runAtomic(Runnable r) {
runAtomicAsUser(r);
}
/** Runs the runnable under write lock.
* If there are any excpeptions thrown during the processing of the runnable,
* all the document modifications are rolled back automatically.
*/
public void runAtomicAsUser(Runnable r) {
boolean completed = false;
atomicLock();
try {
r.run();
completed = true;
} finally {
try {
if (!completed) {
breakAtomicLock();
}
} finally {
atomicUnlock();
}
}
}
/** Insert contents of reader at specified position into document.
* @param reader reader from which data will be read
* @param pos on which position that data will be inserted
*/
public void read(Reader reader, int pos)
throws IOException, BadLocationException {
extWriteLock();
try {
if (pos < 0 || pos > getLength()) {
throw new BadLocationException("BaseDocument.read()", pos); // NOI18N
}
if (inited || modified) { // was the document already initialized?
Analyzer.read(this, reader, pos);
} else { // not initialized yet, we can use initialRead()
Analyzer.initialRead(this, reader, true);
inited = true; // initialized but not modified
}
} finally {
extWriteUnlock();
}
}
/** Write part of the document into specified writer.
* @param writer writer into which data will be written.
* @param pos from which position get the data
* @param len how many characters write
*/
public void write(Writer writer, int pos, int len)
throws IOException, BadLocationException {
readLock();
try {
if ((pos < 0) || ((pos + len) > getLength())) {
throw new BadLocationException("BaseDocument.write()", pos); // NOI18N
}
Analyzer.write(this, writer, pos, len);
writer.flush();
} finally {
readUnlock();
}
}
/** Invalidate the state-infos in all the syntax-marks
* in the whole document. The Syntax can call this method
* if it changes its internal state in the way that affects
* the future returned tokens. The syntax-state-info in all
* the marks is reset and it will be lazily restored when necessary.
*/
public void invalidateSyntaxMarks() {
extWriteLock();
try {
getLineRootElement().invalidateAllSyntaxStateInfos();
repaintBlock(0, getLength());
} finally {
extWriteUnlock();
}
}
/** Get the number of spaces the TAB character ('\t') visually represents.
* This is related to <code>SettingsNames.TAB_SIZE</code> setting.
*/
public int getTabSize() {
return tabSize;
}
/** Get the width of one indentation level.
* The algorithm first checks whether there's a value for the INDENT_SHIFT_WIDTH
* setting. If so it uses it, otherwise it uses <code>formatter.getSpacesPerTab()</code>.
*
* @see getTabSize()
* @see Formatter.getSpacesPerTab()
*/
public int getShiftWidth() {
if (shiftWidth != null) {
return shiftWidth.intValue();
} else {
return getFormatter().getSpacesPerTab();
}
}
public final Class getKitClass() {
return kitClass;
}
/** This method prohibits merging of the next document modification
* with the previous one even if it would be normally possible.
*/
public void resetUndoMerge() {
undoMergeReset = true;
}
/* Defined because of the hack for undo()
* in the BaseDocumentEvent.
*/
protected void fireChangedUpdate(DocumentEvent e) {
super.fireChangedUpdate(e);
}
protected void fireInsertUpdate(DocumentEvent e) {
super.fireInsertUpdate(e);
}
protected void fireRemoveUpdate(DocumentEvent e) {
super.fireRemoveUpdate(e);
}
/** Extended write locking of the document allowing
* reentrant write lock acquiring.
*/
public synchronized final void extWriteLock() {
if (Thread.currentThread() != getCurrentWriter()) {
super.writeLock();
} else { // inner locking block
writeDepth++; // only increase write deepness
}
}
/** Extended write unlocking.
* @see extWriteLock()
*/
public synchronized final void extWriteUnlock() {
if (Thread.currentThread() != getCurrentWriter()) {
throw new RuntimeException(WRITE_LOCK_MISSING);
}
if (writeDepth == 0) { // most outer locking block
super.writeUnlock();
} else { // just inner locking block
writeDepth--;
}
}
public synchronized final void atomicLock() {
extWriteLock();
atomicDepth++;
if (atomicDepth == 1) { // lock really started
fireAtomicLock(atomicLockEventInstance);
}
}
public synchronized final void atomicUnlock() {
atomicUnlockImpl(false);
}
public synchronized final void atomicUnlockImpl(boolean inUndoOrRedo) {
extWriteUnlock();
if (atomicDepth == 0) {
throw new IllegalStateException("atomicUnlock() without atomicLock()");
}
if (--atomicDepth == 0) { // lock really ended
fireAtomicUnlock(atomicLockEventInstance);
if (!inUndoOrRedo && atomicEdits != null && atomicEdits.size() > 0) {
atomicEdits.end();
fireUndoableEditUpdate(new UndoableEditEvent(this, atomicEdits));
atomicEdits = null;
}
}
}
/** Is the document currently atomically locked?
* It's not synced as this method must be called only from writer thread.
*/
public final boolean isAtomicLock() {
return (atomicDepth > 0);
}
/** Break the atomic lock so that doc is no longer in atomic mode.
* All the performed changes are rolled back automatically.
* Even after calling this method, the atomicUnlock() must still be called.
* This method is not synced as it must be called only from writer thread.
*/
public final void breakAtomicLock() {
if (atomicEdits != null && atomicEdits.size() > 0) {
atomicEdits.end();
atomicEdits.undo();
atomicEdits = null;
}
}
public void atomicUndo() {
breakAtomicLock();
}
public void addAtomicLockListener(AtomicLockListener l) {
listenerList.add(AtomicLockListener.class, l);
}
public void removeAtomicLockListener(AtomicLockListener l) {
listenerList.remove(AtomicLockListener.class, l);
}
private void fireAtomicLock(AtomicLockEvent evt) {
EventListener[] listeners = listenerList.getListeners(AtomicLockListener.class);
int cnt = listeners.length;
for (int i = 0; i < cnt; i++) {
((AtomicLockListener)listeners[i]).atomicLock(evt);
}
}
private void fireAtomicUnlock(AtomicLockEvent evt) {
EventListener[] listeners = listenerList.getListeners(AtomicLockListener.class);
int cnt = listeners.length;
for (int i = 0; i < cnt; i++) {
((AtomicLockListener)listeners[i]).atomicUnlock(evt);
}
}
protected final int getAtomicDepth() {
return atomicDepth;
}
protected BaseDocumentEvent createDocumentEvent(int pos, int length,
DocumentEvent.EventType type) {
return new BaseDocumentEvent(this, pos, length, type);
}
/** Was the document modified by either insert/remove
* but not the initial read)?
*/
public boolean isModified() {
return modified;
}
/** Get the layer with the specified name */
public DrawLayer findLayer(String layerName) {
return drawLayerList.findLayer(layerName);
}
public boolean addLayer(DrawLayer layer, int visibility) {
if (drawLayerList.add(layer, visibility)) {
BaseDocumentEvent evt = createDocumentEvent(0, 0, DocumentEvent.EventType.CHANGE);
evt.addEdit(new BaseDocumentEvent.DrawLayerChange(layer.getName(), visibility));
fireChangedUpdate(evt);
return true;
} else {
return false;
}
}
final DrawLayerList getDrawLayerList() {
return drawLayerList;
}
/** Toggle the bookmark for the current line */
public boolean toggleBookmark(int pos) throws BadLocationException {
pos = Utilities.getRowStart(this, pos);
boolean marked = bookmarkChain.toggleMark(pos);
BaseDocumentEvent evt = createDocumentEvent(pos, 0, DocumentEvent.EventType.CHANGE);
fireChangedUpdate(evt);
return marked;
}
/** Get the position of the next bookmark.
* @pos position from which to search
* @wrap wrap around the end of document
* @return position of the next bookmark or -1 if there is no mark
*/
public int getNextBookmark(int pos, boolean wrap)
throws BadLocationException {
try {
pos = Utilities.getRowStart(this, pos);
int rel = bookmarkChain.compareMark(pos);
MarkFactory.ChainDrawMark mark = bookmarkChain.getCurMark();
if (rel <= 0) { // right at this line, go next
if (mark != null) {
if (mark.next != null) {
return mark.next.getOffset();
} else { // last bookmark
return (wrap && bookmarkChain.chain != null) ?
bookmarkChain.chain.getOffset() : -1;
}
} else { // no marks
return -1;
}
} else { // mark after pos
return mark.getOffset();
}
} catch (InvalidMarkException e) {
if (Boolean.getBoolean("netbeans.debug.exceptions")) { // NOI18N
e.printStackTrace();
}
return 0;
}
}
private LineRootElement getLineRootElement() {
return lineRootElement;
}
public Element getParagraphElement(int pos) {
return getLineRootElement().getElement(
getLineRootElement().getElementIndex(pos));
}
/** Returns object which represent list of annotations which are
* attached to this document.
* @return object which represent attached annotations
*/
public synchronized Annotations getAnnotations() {
if (annotations == null) {
annotations = new Annotations(this);
}
return annotations;
}
/** Returns object which represent list of annotations which are
* attached to this document.
* @return object which represent attached annotations
*/
public synchronized Bookmarks getBookmarks() {
if (bookmarks == null) {
bookmarks = new Bookmarks();
}
return bookmarks;
}
/**
* @see LineRootElement#prepareSyntax()
*/
void prepareSyntax(Segment text, Syntax syntax, int reqPos, int reqLen,
boolean forceLastBuffer, boolean forceNotLastBuffer) throws BadLocationException {
getLineRootElement().prepareSyntax(text, syntax, reqPos, reqLen,
forceLastBuffer, forceNotLastBuffer);
}
int getTokenSafeOffset(int offset) {
return getLineRootElement().getTokenSafeOffset(offset);
}
/** Get position on line from visual column. This method can be used
* only for superfixed font i.e. all characters of all font styles
* have the same width.
* @param visCol visual column
* @param startLinePos position of line start
* @return position on line for particular x-coord
*/
synchronized int getOffsetFromVisCol(int visCol, int startLinePos)
throws BadLocationException {
if (startLinePos < 0 || startLinePos >= getLength()) {
throw new BadLocationException("Invalid start line offset", startLinePos);
}
if (visCol <= 0) {
return startLinePos;
}
if (visColPosFwdFinder == null) {
visColPosFwdFinder = new FinderFactory.VisColPosFwdFinder();
}
visColPosFwdFinder.setVisCol(visCol);
visColPosFwdFinder.setTabSize(getTabSize());
int pos = find(visColPosFwdFinder, startLinePos, -1);
return (pos != -1)
? pos
: Utilities.getRowEnd(this, startLinePos);
}
/** Get visual column from position. This method can be used
* only for superfixed font i.e. all characters of all font styles
* have the same width.
* @param pos position for which the visual column should be returned
* the function itself computes the begining of the line first
*/
synchronized int getVisColFromPos(int pos) throws BadLocationException {
if (pos < 0 || pos > getLength()) {
throw new BadLocationException("Invalid offset", pos);
}
if (posVisColFwdFinder == null) {
posVisColFwdFinder = new FinderFactory.PosVisColFwdFinder();
}
int startLinePos = Utilities.getRowStart(this, pos);
posVisColFwdFinder.setTabSize(getTabSize());
find(posVisColFwdFinder, startLinePos, pos);
return posVisColFwdFinder.getVisCol();
}
public String toString() {
return super.toString() + ", kitClass=" + getKitClass() // NOI18N
+ ", docLen=" + getLength(); // NOI18N
}
/** Detailed debug info about the document */
public String toStringDetail() {
return toString();
}
/** Compound edit that write-locks the document for the whole processing
* of its undo operation.
*/
class AtomicCompoundEdit extends CompoundEdit {
public void undo() throws CannotUndoException {
atomicLock();
try {
super.undo();
} finally {
atomicUnlockImpl(true);
}
}
public void redo() throws CannotRedoException {
atomicLock();
try {
super.redo();
} finally {
atomicUnlockImpl(true);
}
}
public int size() {
return edits.size();
}
}
/** Property evaluator is useful for lazy evaluation
* of properties of the document when
* {@link javax.swing.text.Document#getProperty(java.lang.String)}
* is called.
*/
public interface PropertyEvaluator {
/** Get the real value of the property */
public Object getValue();
}
private class LazyPropertyMap extends Hashtable {
LazyPropertyMap(Dictionary dict) {
super(5);
Enumeration en = dict.keys();
while (en.hasMoreElements()) {
Object key = en.nextElement();
put(key, dict.get(key));
}
}
public Object get(Object key) {
Object val = super.get(key);
if (val instanceof PropertyEvaluator) {
val = ((PropertyEvaluator)val).getValue();
}
return val;
}
}
}