下面列出了怎么用org.eclipse.jface.text.source.ICharacterPairMatcher的API类实例代码及写法，或者点击链接到github查看源代码。
protected IRegion performMatch(IDocument doc, int caretOffset) throws BadLocationException {
final int charOffset= caretOffset - 1;
final char prevChar= doc.getChar(Math.max(charOffset, 0));
if (!fPairs.contains(prevChar)) return null;
final boolean isForward= fPairs.isStartCharacter(prevChar);
fAnchor= isForward ? ICharacterPairMatcher.LEFT : ICharacterPairMatcher.RIGHT;
final int searchStartPosition= isForward ? caretOffset : caretOffset - 2;
final int adjustedOffset= isForward ? charOffset : caretOffset;
final String partition= TextUtilities.getContentType(doc, fPartitioning, charOffset, false);
final DocumentPartitionAccessor partDoc= new DocumentPartitionAccessor(doc, fPartitioning, partition);
int endOffset= findMatchingPeer(partDoc, prevChar, fPairs.getMatching(prevChar),
isForward, isForward ? doc.getLength() : -1,
searchStartPosition);
if (endOffset == -1) return null;
final int adjustedEndOffset= isForward ? endOffset + 1: endOffset;
if (adjustedEndOffset == adjustedOffset) return null;
return new Region(Math.min(adjustedOffset, adjustedEndOffset),
Math.abs(adjustedEndOffset - adjustedOffset));
}
@Override
public ICharacterPairMatcher bindICharacterPairMatcher() {
return new DefaultCharacterPairMatcher(new char[] { ':', ';', '{', '}', '(', ')', '[', ']' });
}
public ICharacterPairMatcher bindICharacterPairMatcher() {
return new BracePairMatcher();
}
protected ICharacterPairMatcher getCharacterPairMatcher() {
return characterPairMatcher;
}
public void run(IAction action) {
if (targetEditor == null) return;
ISourceViewer sourceViewer= targetEditor.getViewer();
IDocument document= sourceViewer.getDocument();
if (document == null)
return;
ITextSelection selection = (ITextSelection) targetEditor.getSelectionProvider().getSelection();
SubStatusLineManager slm =
(SubStatusLineManager) targetEditor.getEditorSite().getActionBars().getStatusLineManager();
int selectionLength= Math.abs(selection.getLength());
if (selectionLength > 1) {
slm.setErrorMessage(TexlipsePlugin.getResourceString("gotoMatchingBracketNotSelected"));
slm.setVisible(true);
sourceViewer.getTextWidget().getDisplay().beep();
return;
}
int sourceCaretOffset= selection.getOffset() + selection.getLength();
TexPairMatcher fBracketMatcher = new TexPairMatcher("{}[]()");
IRegion region= fBracketMatcher.match(document, sourceCaretOffset);
if (region == null) {
slm.setErrorMessage(TexlipsePlugin.getResourceString("gotoMatchingBracketNotFound"));
slm.setVisible(true);
sourceViewer.getTextWidget().getDisplay().beep();
return;
}
int offset= region.getOffset();
int length= region.getLength();
if (length < 1) return;
int anchor = fBracketMatcher.getAnchor();
int targetOffset= (ICharacterPairMatcher.RIGHT == anchor) ? offset + 1: offset + length;
if (selection.getLength() < 0)
targetOffset -= selection.getLength();
sourceViewer.setSelectedRange(targetOffset, selection.getLength());
sourceViewer.revealRange(targetOffset, selection.getLength());
}
/**
* Handles a redraw request.
*
* @param gc the GC to draw into.
*/
private void handleDrawRequest(GC gc) {
if (fPairPosition.isDeleted)
return;
int offset= fPairPosition.getOffset();
int length= fPairPosition.getLength();
if (length < 1)
return;
if (fSourceViewer instanceof ITextViewerExtension5) {
ITextViewerExtension5 extension= (ITextViewerExtension5) fSourceViewer;
IRegion widgetRange= extension.modelRange2WidgetRange(new Region(offset, length));
if (widgetRange == null)
return;
try {
// don't draw if the pair position is really hidden and widgetRange just
// marks the coverage around it.
IDocument doc= fSourceViewer.getDocument();
int startLine= doc.getLineOfOffset(offset);
int endLine= doc.getLineOfOffset(offset + length);
if (extension.modelLine2WidgetLine(startLine) == -1 || extension.modelLine2WidgetLine(endLine) == -1)
return;
} catch (BadLocationException e) {
return;
}
offset= widgetRange.getOffset();
length= widgetRange.getLength();
} else {
IRegion region= fSourceViewer.getVisibleRegion();
if (region.getOffset() > offset || region.getOffset() + region.getLength() < offset + length)
return;
offset -= region.getOffset();
}
boolean digraph = ((fMatchFlags & PairedBracketsMatcher.MATCH_FLAG_DIGRAPH) != 0);
int cx = digraph ? 1 : 0;
if (ICharacterPairMatcher.RIGHT == fAnchor)
draw(gc, offset + length -1 - cx, offset, cx);
else
draw(gc, offset, offset + length -1 - cx, cx);
}
/**
* Jumps to the matching bracket.
*/
public void gotoMatchingBracket() {
ISourceViewer sourceViewer = getSourceViewer();
IDocument document = sourceViewer.getDocument();
if (document == null)
return;
IRegion selection = getSignedSelection(sourceViewer);
int selectionLength = Math.abs(selection.getLength());
if (selectionLength > 1) {
setStatusLineErrorMessage(JSDTTypeScriptUIMessages.GotoMatchingBracket_error_invalidSelection);
sourceViewer.getTextWidget().getDisplay().beep();
return;
}
// #26314
int sourceCaretOffset = selection.getOffset() + selection.getLength();
if (isSurroundedByBrackets(document, sourceCaretOffset))
sourceCaretOffset -= selection.getLength();
IRegion region = fBracketMatcher.match(document, sourceCaretOffset);
if (region == null) {
setStatusLineErrorMessage(JSDTTypeScriptUIMessages.GotoMatchingBracket_error_noMatchingBracket);
sourceViewer.getTextWidget().getDisplay().beep();
return;
}
int offset = region.getOffset();
int length = region.getLength();
if (length < 1)
return;
int anchor = fBracketMatcher.getAnchor();
// http://dev.eclipse.org/bugs/show_bug.cgi?id=34195
int targetOffset = (ICharacterPairMatcher.RIGHT == anchor) ? offset + 1 : offset + length;
boolean visible = false;
if (sourceViewer instanceof ITextViewerExtension5) {
ITextViewerExtension5 extension = (ITextViewerExtension5) sourceViewer;
visible = (extension.modelOffset2WidgetOffset(targetOffset) > -1);
} else {
IRegion visibleRegion = sourceViewer.getVisibleRegion();
// http://dev.eclipse.org/bugs/show_bug.cgi?id=34195
visible = (targetOffset >= visibleRegion.getOffset()
&& targetOffset <= visibleRegion.getOffset() + visibleRegion.getLength());
}
if (!visible) {
setStatusLineErrorMessage(JSDTTypeScriptUIMessages.GotoMatchingBracket_error_bracketOutsideSelectedElement);
sourceViewer.getTextWidget().getDisplay().beep();
return;
}
if (selection.getLength() < 0)
targetOffset -= selection.getLength();
sourceViewer.setSelectedRange(targetOffset, selection.getLength());
sourceViewer.revealRange(targetOffset, selection.getLength());
}
protected ICharacterPairMatcher getCharacterPairMatcher() {
return this.characterPairMatcher;
}
private IRegion performMatch(IDocument doc, int caretOffset) throws BadLocationException
{
int charOffset = Math.max(caretOffset - 1, 0);
char prevChar = doc.getChar(charOffset);
if (!fPairs.contains(prevChar))
{
// Now try to right of caret
charOffset = caretOffset;
caretOffset += 1;
if (charOffset >= doc.getLength())
{
return null;
}
prevChar = doc.getChar(charOffset);
if (!fPairs.contains(prevChar))
{
return null;
}
}
ITypedRegion partition = getPartition(doc, charOffset);
// FIXME if we're inside a string or comment, we should limit our search to just this particular partition!
// Drop out if the char is inside a comment
if (isComment(doc, partition))
{
return null;
}
boolean isForward = fPairs.isStartCharacter(prevChar);
String contentType = partition.getType();
if (fPairs.isAmbiguous(prevChar))
{
// If this is common start tag, look forward, if common end tag look backwards!
if (CompositePartitionScanner.START_SWITCH_TAG.equals(contentType))
{
isForward = true;
}
else if (CompositePartitionScanner.END_SWITCH_TAG.equals(contentType))
{
isForward = false;
}
else
{
// Need to look at partition transition to tell if we're at end or beginning!
String partitionAhead = TextUtilities.getContentType(doc, fPartitioning, charOffset + 1, false);
String partitionBehind = TextUtilities.getContentType(doc, fPartitioning, charOffset - 1, false);
if (contentType.equals(partitionBehind) && !contentType.equals(partitionAhead))
{
// End because we're transitioning out of a partition on this character
isForward = false;
}
else if (isUnclosedPair(prevChar, doc, charOffset))
{
isForward = false;
}
}
}
fAnchor = isForward ? ICharacterPairMatcher.LEFT : ICharacterPairMatcher.RIGHT;
int searchStartPosition = isForward ? charOffset + 1 : charOffset - 1;
char endChar = fPairs.getMatching(prevChar);
int endOffset = -1;
if (isForward)
{
endOffset = searchForward(doc, searchStartPosition, prevChar, endChar, contentType);
}
else
{
endOffset = searchBackwards(doc, searchStartPosition, prevChar, endChar, contentType);
}
if (endOffset == -1)
{
return null;
}
final int adjustedOffset = isForward ? charOffset : caretOffset;
final int adjustedEndOffset = isForward ? endOffset + 1 : endOffset;
if (adjustedEndOffset == adjustedOffset)
{
return null;
}
return new Region(Math.min(adjustedOffset, adjustedEndOffset), Math.abs(adjustedEndOffset - adjustedOffset));
}
/**
* Jumps to the matching bracket.
*/
public void gotoMatchingBracket() {
ISourceViewer sourceViewer= getSourceViewer();
IDocument document= sourceViewer.getDocument();
if (document == null)
return;
IRegion selection= getSignedSelection(sourceViewer);
if (fPreviousSelections == null)
initializePreviousSelectionList();
IRegion region= fBracketMatcher.match(document, selection.getOffset(), selection.getLength());
if (region == null) {
region= fBracketMatcher.findEnclosingPeerCharacters(document, selection.getOffset(), selection.getLength());
initializePreviousSelectionList();
fPreviousSelections.add(selection);
} else {
if (fPreviousSelections.size() == 2) {
if (!selection.equals(fPreviousSelections.get(1))) {
initializePreviousSelectionList();
}
} else if (fPreviousSelections.size() == 3) {
if (selection.equals(fPreviousSelections.get(2)) && !selection.equals(fPreviousSelections.get(0))) {
IRegion originalSelection= fPreviousSelections.get(0);
sourceViewer.setSelectedRange(originalSelection.getOffset(), originalSelection.getLength());
sourceViewer.revealRange(originalSelection.getOffset(), originalSelection.getLength());
initializePreviousSelectionList();
return;
}
initializePreviousSelectionList();
}
}
if (region == null) {
setStatusLineErrorMessage(JavaEditorMessages.GotoMatchingBracket_error_noMatchingBracket);
sourceViewer.getTextWidget().getDisplay().beep();
return;
}
int offset= region.getOffset();
int length= region.getLength();
if (length < 1)
return;
int anchor= fBracketMatcher.getAnchor();
// http://dev.eclipse.org/bugs/show_bug.cgi?id=34195
int targetOffset= (ICharacterPairMatcher.RIGHT == anchor) ? offset + 1 : offset + length - 1;
boolean visible= false;
if (sourceViewer instanceof ITextViewerExtension5) {
ITextViewerExtension5 extension= (ITextViewerExtension5) sourceViewer;
visible= (extension.modelOffset2WidgetOffset(targetOffset) > -1);
} else {
IRegion visibleRegion= sourceViewer.getVisibleRegion();
// http://dev.eclipse.org/bugs/show_bug.cgi?id=34195
visible= (targetOffset >= visibleRegion.getOffset() && targetOffset <= visibleRegion.getOffset() + visibleRegion.getLength());
}
if (!visible) {
setStatusLineErrorMessage(JavaEditorMessages.GotoMatchingBracket_error_bracketOutsideSelectedElement);
sourceViewer.getTextWidget().getDisplay().beep();
return;
}
int adjustment= getOffsetAdjustment(document, selection.getOffset() + selection.getLength(), selection.getLength());
targetOffset+= adjustment;
int direction= (selection.getLength() == 0) ? 0 : ((selection.getLength() > 0) ? 1 : -1);
if (fPreviousSelections.size() == 1 && direction < 0) {
targetOffset++;
}
if (fPreviousSelections.size() > 0) {
fPreviousSelections.add(new Region(targetOffset, direction));
}
sourceViewer.setSelectedRange(targetOffset, direction);
sourceViewer.revealRange(targetOffset, direction);
}
public void gotoMatchingBracket() {
ITextViewer sourceViewer = langEditor.getSourceViewer_();
IDocument document= sourceViewer.getDocument();
if (document == null)
return;
IRegion selection= EditorUtils.getSignedSelection(sourceViewer);
if (fPreviousSelections == null)
initializePreviousSelectionList();
IRegion region= getBracketMatcher().match(document, selection.getOffset(), selection.getLength());
if (region == null) {
region= getBracketMatcher().findEnclosingPeerCharacters(document, selection.getOffset(), selection.getLength());
initializePreviousSelectionList();
fPreviousSelections.add(selection);
} else {
if (fPreviousSelections.size() == 2) {
if (!selection.equals(fPreviousSelections.get(1))) {
initializePreviousSelectionList();
}
} else if (fPreviousSelections.size() == 3) {
if (selection.equals(fPreviousSelections.get(2)) && !selection.equals(fPreviousSelections.get(0))) {
IRegion originalSelection= fPreviousSelections.get(0);
sourceViewer.setSelectedRange(originalSelection.getOffset(), originalSelection.getLength());
sourceViewer.revealRange(originalSelection.getOffset(), originalSelection.getLength());
initializePreviousSelectionList();
return;
}
initializePreviousSelectionList();
}
}
if (region == null) {
langEditor.setStatusLineErrorMessage(LangEditorMessages.GotoMatchingBracket_error_noMatchingBracket);
sourceViewer.getTextWidget().getDisplay().beep();
return;
}
int offset= region.getOffset();
int length= region.getLength();
if (length < 1)
return;
int anchor= getBracketMatcher().getAnchor();
// http://dev.eclipse.org/bugs/show_bug.cgi?id=34195
int targetOffset= (ICharacterPairMatcher.RIGHT == anchor) ? offset + 1 : offset + length - 1;
boolean visible= false;
if (sourceViewer instanceof ITextViewerExtension5) {
ITextViewerExtension5 extension= (ITextViewerExtension5) sourceViewer;
visible= (extension.modelOffset2WidgetOffset(targetOffset) > -1);
} else {
IRegion visibleRegion= sourceViewer.getVisibleRegion();
// http://dev.eclipse.org/bugs/show_bug.cgi?id=34195
visible= (targetOffset >= visibleRegion.getOffset() && targetOffset <= visibleRegion.getOffset() + visibleRegion.getLength());
}
if (!visible) {
langEditor.setStatusLineErrorMessage(LangEditorMessages.GotoMatchingBracket_error_bracketOutsideSelectedElement);
sourceViewer.getTextWidget().getDisplay().beep();
return;
}
int adjustment= getBracketMatcher().getOffsetAdjustment(document, selection.getOffset() + selection.getLength(), selection.getLength());
targetOffset+= adjustment;
int direction= (selection.getLength() == 0) ? 0 : ((selection.getLength() > 0) ? 1 : -1);
if (fPreviousSelections.size() == 1 && direction < 0) {
targetOffset++;
}
if (fPreviousSelections.size() > 0) {
fPreviousSelections.add(new Region(targetOffset, direction));
}
sourceViewer.setSelectedRange(targetOffset, direction);
sourceViewer.revealRange(targetOffset, direction);
}