下面列出了org.eclipse.jface.text.source.ISourceViewer#getSelectedRange ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
/**
* Remember current selection.
*/
public void remember() {
/* https://bugs.eclipse.org/bugs/show_bug.cgi?id=52257
* This method may be called inside an asynchronous call posted
* to the UI thread, so protect against intermediate disposal
* of the editor.
*/
ISourceViewer viewer= getSourceViewer();
if (viewer != null) {
Point selection= viewer.getSelectedRange();
int startOffset= selection.x;
int endOffset= startOffset + selection.y;
fStartOffset.setOffset(startOffset);
fEndOffset.setOffset(endOffset);
}
}
@Override
protected void setCaretPosition(final int position) {
if (!validateEditorInputState())
return;
final ISourceViewer viewer = getSourceViewer();
StyledText text = viewer.getTextWidget();
Point widgetSelection = text.getSelection();
if (isBlockSelectionModeEnabled() && widgetSelection.y != widgetSelection.x) {
final int caret = text.getCaretOffset();
final int offset = modelOffset2WidgetOffset(viewer, position);
if (caret == widgetSelection.x)
text.setSelectionRange(widgetSelection.y, offset - widgetSelection.y);
else
text.setSelectionRange(widgetSelection.x, offset - widgetSelection.x);
text.invokeAction(ST.DELETE_NEXT);
} else {
Point selection = viewer.getSelectedRange();
final int caret, length;
if (selection.y != 0) {
caret = selection.x;
length = selection.y;
} else {
caret = widgetOffset2ModelOffset(viewer, text.getCaretOffset());
length = position - caret;
}
try {
viewer.getDocument().replace(caret, length, ""); //$NON-NLS-1$
} catch (BadLocationException exception) {
// Should not happen
}
}
}
@Override
protected void setCaretPosition(int position) {
if (!validateEditorInputState())
return;
final int length;
final ISourceViewer viewer = getSourceViewer();
StyledText text = viewer.getTextWidget();
Point widgetSelection = text.getSelection();
if (isBlockSelectionModeEnabled() && widgetSelection.y != widgetSelection.x) {
final int caret = text.getCaretOffset();
final int offset = modelOffset2WidgetOffset(viewer, position);
if (caret == widgetSelection.x)
text.setSelectionRange(widgetSelection.y, offset - widgetSelection.y);
else
text.setSelectionRange(widgetSelection.x, offset - widgetSelection.x);
text.invokeAction(ST.DELETE_PREVIOUS);
} else {
Point selection = viewer.getSelectedRange();
if (selection.y != 0) {
position = selection.x;
length = selection.y;
} else {
length = widgetOffset2ModelOffset(viewer, text.getCaretOffset()) - position;
}
try {
viewer.getDocument().replace(position, length, ""); //$NON-NLS-1$
} catch (BadLocationException exception) {
// Should not happen
}
}
}
public boolean start(IRenameElementContext renameElementContext, Provider<LinkedPositionGroup> provider, IProgressMonitor monitor) {
if (renameElementContext == null)
throw new IllegalArgumentException("RenameElementContext is null");
this.linkedPositionGroup = provider.get();
if (linkedPositionGroup == null || linkedPositionGroup.isEmpty())
return false;
this.editor = (XtextEditor) renameElementContext.getTriggeringEditor();
this.focusEditingSupport = new FocusEditingSupport();
ISourceViewer viewer = editor.getInternalSourceViewer();
IDocument document = viewer.getDocument();
originalSelection = viewer.getSelectedRange();
currentPosition = linkedPositionGroup.getPositions()[0];
originalName = getCurrentName();
try {
linkedModeModel = new LinkedModeModel();
linkedModeModel.addGroup(linkedPositionGroup);
linkedModeModel.forceInstall();
linkedModeModel.addLinkingListener(new EditorSynchronizer());
LinkedModeUI ui = new EditorLinkedModeUI(linkedModeModel, viewer);
ui.setExitPolicy(new ExitPolicy(document));
if (currentPosition.includes(originalSelection.x))
ui.setExitPosition(viewer, originalSelection.x, 0, Integer.MAX_VALUE);
ui.enter();
if (currentPosition.includes(originalSelection.x)
&& currentPosition.includes(originalSelection.x + originalSelection.y))
viewer.setSelectedRange(originalSelection.x, originalSelection.y);
if (viewer instanceof IEditingSupportRegistry) {
IEditingSupportRegistry registry = (IEditingSupportRegistry) viewer;
registry.register(focusEditingSupport);
}
openPopup();
return true;
} catch (BadLocationException e) {
throw new WrappedException(e);
}
}
void doFormat(ISourceViewer sourceViewer, final String xtendCode, Point selection) {
int offset = selection.x;
int length = xtendCode.length();
if (offset - 1 >= 0) {
offset--;
length++;
}
sourceViewer.setSelectedRange(offset, length);
sourceViewer.getTextOperationTarget().doOperation(ISourceViewer.FORMAT);
int restoreCaretAtOffset = sourceViewer.getSelectedRange().x + sourceViewer.getSelectedRange().y;
sourceViewer.setSelectedRange(restoreCaretAtOffset, 0);
}
@Override
protected void setCaretPosition(final int position) {
if (!validateEditorInputState())
return;
final ISourceViewer viewer= getSourceViewer();
StyledText text= viewer.getTextWidget();
Point widgetSelection= text.getSelection();
if (isBlockSelectionModeEnabled() && widgetSelection.y != widgetSelection.x) {
final int caret= text.getCaretOffset();
final int offset= modelOffset2WidgetOffset(viewer, position);
if (caret == widgetSelection.x)
text.setSelectionRange(widgetSelection.y, offset - widgetSelection.y);
else
text.setSelectionRange(widgetSelection.x, offset - widgetSelection.x);
text.invokeAction(ST.DELETE_NEXT);
} else {
Point selection= viewer.getSelectedRange();
final int caret, length;
if (selection.y != 0) {
caret= selection.x;
length= selection.y;
} else {
caret= widgetOffset2ModelOffset(viewer, text.getCaretOffset());
length= position - caret;
}
try {
viewer.getDocument().replace(caret, length, ""); //$NON-NLS-1$
} catch (BadLocationException exception) {
// Should not happen
}
}
}
@Override
protected void setCaretPosition(int position) {
if (!validateEditorInputState())
return;
final int length;
final ISourceViewer viewer= getSourceViewer();
StyledText text= viewer.getTextWidget();
Point widgetSelection= text.getSelection();
if (isBlockSelectionModeEnabled() && widgetSelection.y != widgetSelection.x) {
final int caret= text.getCaretOffset();
final int offset= modelOffset2WidgetOffset(viewer, position);
if (caret == widgetSelection.x)
text.setSelectionRange(widgetSelection.y, offset - widgetSelection.y);
else
text.setSelectionRange(widgetSelection.x, offset - widgetSelection.x);
text.invokeAction(ST.DELETE_PREVIOUS);
} else {
Point selection= viewer.getSelectedRange();
if (selection.y != 0) {
position= selection.x;
length= selection.y;
} else {
length= widgetOffset2ModelOffset(viewer, text.getCaretOffset()) - position;
}
try {
viewer.getDocument().replace(position, length, ""); //$NON-NLS-1$
} catch (BadLocationException exception) {
// Should not happen
}
}
}
private static final IRegion getSignedSelection(ISourceViewer sourceViewer) {
Point viewerSelection= sourceViewer.getSelectedRange();
StyledText text= sourceViewer.getTextWidget();
Point selection= text.getSelectionRange();
if (text.getCaretOffset() == selection.x) {
viewerSelection.x= viewerSelection.x + viewerSelection.y;
viewerSelection.y= -viewerSelection.y;
}
return new Region(viewerSelection.x, viewerSelection.y);
}
public ICompletionProposal[] computeQuickAssistProposals(IQuickAssistInvocationContext quickAssistContext) {
ISourceViewer viewer= quickAssistContext.getSourceViewer();
int documentOffset= quickAssistContext.getOffset();
IEditorPart part= fAssistant.getEditor();
ICompilationUnit cu= JavaUI.getWorkingCopyManager().getWorkingCopy(part.getEditorInput());
IAnnotationModel model= JavaUI.getDocumentProvider().getAnnotationModel(part.getEditorInput());
AssistContext context= null;
if (cu != null) {
int length= viewer != null ? viewer.getSelectedRange().y : 0;
context= new AssistContext(cu, viewer, part, documentOffset, length);
}
Annotation[] annotations= fAssistant.getAnnotationsAtOffset();
fErrorMessage= null;
ICompletionProposal[] res= null;
if (model != null && context != null && annotations != null) {
ArrayList<IJavaCompletionProposal> proposals= new ArrayList<IJavaCompletionProposal>(10);
IStatus status= collectProposals(context, model, annotations, true, !fAssistant.isUpdatedOffset(), proposals);
res= proposals.toArray(new ICompletionProposal[proposals.size()]);
if (!status.isOK()) {
fErrorMessage= status.getMessage();
JavaPlugin.log(status);
}
}
if (res == null || res.length == 0) {
return new ICompletionProposal[] { new ChangeCorrectionProposal(CorrectionMessages.NoCorrectionProposal_description, new NullChange(""), IProposalRelevance.NO_SUGGESSTIONS_AVAILABLE, null) }; //$NON-NLS-1$
}
if (res.length > 1) {
Arrays.sort(res, new CompletionProposalComparator());
}
return res;
}
@Override
protected void setCaretPosition(final int position) {
if (!validateEditorInputState()) {
return;
}
final ISourceViewer viewer = getSourceViewer();
StyledText text = viewer.getTextWidget();
Point widgetSelection = text.getSelection();
if (isBlockSelectionModeEnabled() && widgetSelection.y != widgetSelection.x) {
final int caret = text.getCaretOffset();
final int offset = modelOffset2WidgetOffset(viewer, position);
if (caret == widgetSelection.x) {
text.setSelectionRange(widgetSelection.y, offset - widgetSelection.y);
} else {
text.setSelectionRange(widgetSelection.x, offset - widgetSelection.x);
}
text.invokeAction(ST.DELETE_NEXT);
} else {
Point selection = viewer.getSelectedRange();
final int caret, length;
if (selection.y != 0) {
caret = selection.x;
length = selection.y;
} else {
caret = widgetOffset2ModelOffset(viewer, text.getCaretOffset());
length = position - caret;
}
try {
viewer.getDocument().replace(caret, length, ""); //$NON-NLS-1$
} catch (BadLocationException exception) {
// Should not happen
}
}
}
@Override
protected void setCaretPosition(int position) {
if (!validateEditorInputState()) {
return;
}
final int length;
final ISourceViewer viewer = getSourceViewer();
StyledText text = viewer.getTextWidget();
Point widgetSelection = text.getSelection();
if (isBlockSelectionModeEnabled() && widgetSelection.y != widgetSelection.x) {
final int caret = text.getCaretOffset();
final int offset = modelOffset2WidgetOffset(viewer, position);
if (caret == widgetSelection.x) {
text.setSelectionRange(widgetSelection.y, offset - widgetSelection.y);
} else {
text.setSelectionRange(widgetSelection.x, offset - widgetSelection.x);
}
text.invokeAction(ST.DELETE_PREVIOUS);
} else {
Point selection = viewer.getSelectedRange();
if (selection.y != 0) {
position = selection.x;
length = selection.y;
} else {
length = widgetOffset2ModelOffset(viewer, text.getCaretOffset()) - position;
}
try {
viewer.getDocument().replace(position, length, ""); //$NON-NLS-1$
} catch (BadLocationException exception) {
// Should not happen
}
}
}
private void doPasteJavaCode(final XtextEditor activeXtextEditor, final String javaCode, final JavaImportData javaImports)
throws ExecutionException {
ISourceViewer sourceViewer = activeXtextEditor.getInternalSourceViewer();
final IXtextDocument xtextDocument = activeXtextEditor.getDocument();
IJavaProject project = null;
IProject iProject = null;
IEditorInput editorInput = activeXtextEditor.getEditorInput();
if (editorInput instanceof IFileEditorInput) {
iProject = ((IFileEditorInput) editorInput).getFile().getProject();
project = JavaCore.create(iProject);
}
final int selectionOffset = Math.max(0, sourceViewer.getSelectedRange().x - 1);
EObject targetElement = xtextDocument.readOnly(new IUnitOfWork<EObject, XtextResource>() {
@Override
public EObject exec(XtextResource state) throws Exception {
IParseResult parseResult = state.getParseResult();
if (parseResult == null) {
return null;
}
ILeafNode leafNode = NodeModelUtils.findLeafNodeAtOffset(parseResult.getRootNode(), selectionOffset);
if (leafNode == null) {
return parseResult.getRootASTElement();
}
return leafNode.getSemanticElement();
}
});
JavaConverter javaConverter = javaConverterProvider.get();
final String xtendCode = javaConverter.toXtend(javaCode, javaImports != null ? javaImports.getImports() : null,
targetElement, project, conditionalExpressionsAllowed(iProject));
if (!Strings.isEmpty(xtendCode)) {
if (javaImports != null) {
importsUtil.addImports(javaImports.getImports(), javaImports.getStaticImports(), new String[] {}, xtextDocument);
}
Point selection = sourceViewer.getSelectedRange();
try {
xtextDocument.replace(selection.x, selection.y, xtendCode);
} catch (BadLocationException e) {
throw new ExecutionException("Failed to replace content.", e);
}
//TODO enable formatting, when performance became better
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=457814
// doFormat(sourceViewer, xtendCode, selection);
}
}
public void start() {
if (getActiveLinkedMode() != null) {
// for safety; should already be handled in RenameJavaElementAction
fgActiveLinkedMode.startFullDialog();
return;
}
ISourceViewer viewer = fEditor.getViewer();
IDocument document = viewer.getDocument();
ITypeScriptFile tsFile = fEditor.getTypeScriptFile();
tsFile.setDisableChanged(true);
fOriginalSelection = viewer.getSelectedRange();
int offset = fOriginalSelection.x;
try {
fLinkedPositionGroup = new LinkedPositionGroup();
if (viewer instanceof ITextViewerExtension6) {
IUndoManager undoManager = ((ITextViewerExtension6) viewer).getUndoManager();
if (undoManager instanceof IUndoManagerExtension) {
IUndoManagerExtension undoManagerExtension = (IUndoManagerExtension) undoManager;
IUndoContext undoContext = undoManagerExtension.getUndoContext();
IOperationHistory operationHistory = OperationHistoryFactory.getOperationHistory();
fStartingUndoOperation = operationHistory.getUndoOperation(undoContext);
}
}
// Find occurrences
List<OccurrencesResponseItem> occurrences = tsFile.occurrences(offset).get(1000, TimeUnit.MILLISECONDS);
// Create Eclipse linked position from the occurrences list.
int start, length;
for (int i = 0; i < occurrences.size(); i++) {
OccurrencesResponseItem item = occurrences.get(i);
start = tsFile.getPosition(item.getStart());
length = tsFile.getPosition(item.getEnd()) - start;
LinkedPosition linkedPosition = new LinkedPosition(document, start, length, i);
if (i == 0) {
fOriginalName = document.get(start, length);
fNamePosition = linkedPosition;
}
fLinkedPositionGroup.addPosition(linkedPosition);
}
fLinkedModeModel = new LinkedModeModel();
fLinkedModeModel.addGroup(fLinkedPositionGroup);
fLinkedModeModel.forceInstall();
fLinkedModeModel.addLinkingListener(new EditorHighlightingSynchronizer(fEditor));
fLinkedModeModel.addLinkingListener(new EditorSynchronizer());
LinkedModeUI ui = new EditorLinkedModeUI(fLinkedModeModel, viewer);
ui.setExitPosition(viewer, offset, 0, Integer.MAX_VALUE);
ui.setExitPolicy(new ExitPolicy(document));
ui.enter();
viewer.setSelectedRange(fOriginalSelection.x, fOriginalSelection.y); // by
// default,
// full
// word
// is
// selected;
// restore
// original
// selection
if (viewer instanceof IEditingSupportRegistry) {
IEditingSupportRegistry registry = (IEditingSupportRegistry) viewer;
registry.register(fFocusEditingSupport);
}
openSecondaryPopup();
// startAnimation();
fgActiveLinkedMode = this;
} catch (Exception e) {
JSDTTypeScriptUIPlugin.log(e);
}
}
public void start() {
if (getActiveLinkedMode() != null) {
// for safety; should already be handled in RenameJavaElementAction
fgActiveLinkedMode.startFullDialog();
return;
}
ISourceViewer viewer= fEditor.getViewer();
IDocument document= viewer.getDocument();
fOriginalSelection= viewer.getSelectedRange();
int offset= fOriginalSelection.x;
try {
CompilationUnit root= SharedASTProvider.getAST(getCompilationUnit(), SharedASTProvider.WAIT_YES, null);
fLinkedPositionGroup= new LinkedPositionGroup();
ASTNode selectedNode= NodeFinder.perform(root, fOriginalSelection.x, fOriginalSelection.y);
if (! (selectedNode instanceof SimpleName)) {
return; // TODO: show dialog
}
SimpleName nameNode= (SimpleName) selectedNode;
if (viewer instanceof ITextViewerExtension6) {
IUndoManager undoManager= ((ITextViewerExtension6)viewer).getUndoManager();
if (undoManager instanceof IUndoManagerExtension) {
IUndoManagerExtension undoManagerExtension= (IUndoManagerExtension)undoManager;
IUndoContext undoContext= undoManagerExtension.getUndoContext();
IOperationHistory operationHistory= OperationHistoryFactory.getOperationHistory();
fStartingUndoOperation= operationHistory.getUndoOperation(undoContext);
}
}
fOriginalName= nameNode.getIdentifier();
final int pos= nameNode.getStartPosition();
ASTNode[] sameNodes= LinkedNodeFinder.findByNode(root, nameNode);
//TODO: copied from LinkedNamesAssistProposal#apply(..):
// sort for iteration order, starting with the node @ offset
Arrays.sort(sameNodes, new Comparator<ASTNode>() {
public int compare(ASTNode o1, ASTNode o2) {
return rank(o1) - rank(o2);
}
/**
* Returns the absolute rank of an <code>ASTNode</code>. Nodes
* preceding <code>pos</code> are ranked last.
*
* @param node the node to compute the rank for
* @return the rank of the node with respect to the invocation offset
*/
private int rank(ASTNode node) {
int relativeRank= node.getStartPosition() + node.getLength() - pos;
if (relativeRank < 0)
return Integer.MAX_VALUE + relativeRank;
else
return relativeRank;
}
});
for (int i= 0; i < sameNodes.length; i++) {
ASTNode elem= sameNodes[i];
LinkedPosition linkedPosition= new LinkedPosition(document, elem.getStartPosition(), elem.getLength(), i);
if (i == 0)
fNamePosition= linkedPosition;
fLinkedPositionGroup.addPosition(linkedPosition);
}
fLinkedModeModel= new LinkedModeModel();
fLinkedModeModel.addGroup(fLinkedPositionGroup);
fLinkedModeModel.forceInstall();
fLinkedModeModel.addLinkingListener(new EditorHighlightingSynchronizer(fEditor));
fLinkedModeModel.addLinkingListener(new EditorSynchronizer());
LinkedModeUI ui= new EditorLinkedModeUI(fLinkedModeModel, viewer);
ui.setExitPosition(viewer, offset, 0, Integer.MAX_VALUE);
ui.setExitPolicy(new ExitPolicy(document));
ui.enter();
viewer.setSelectedRange(fOriginalSelection.x, fOriginalSelection.y); // by default, full word is selected; restore original selection
if (viewer instanceof IEditingSupportRegistry) {
IEditingSupportRegistry registry= (IEditingSupportRegistry) viewer;
registry.register(fFocusEditingSupport);
}
openSecondaryPopup();
// startAnimation();
fgActiveLinkedMode= this;
} catch (BadLocationException e) {
JavaPlugin.log(e);
}
}
private static boolean getEscapeUnescapeBackslashProposals(IQuickAssistInvocationContext invocationContext, ArrayList<ICompletionProposal> resultingCollections) throws BadLocationException,
BadPartitioningException {
ISourceViewer sourceViewer= invocationContext.getSourceViewer();
IDocument document= sourceViewer.getDocument();
Point selectedRange= sourceViewer.getSelectedRange();
int selectionOffset= selectedRange.x;
int selectionLength= selectedRange.y;
int proposalOffset;
int proposalLength;
String text;
if (selectionLength == 0) {
if (selectionOffset != document.getLength()) {
char ch= document.getChar(selectionOffset);
if (ch == '=' || ch == ':') { //see PropertiesFilePartitionScanner()
return false;
}
}
ITypedRegion partition= null;
if (document instanceof IDocumentExtension3)
partition= ((IDocumentExtension3)document).getPartition(IPropertiesFilePartitions.PROPERTIES_FILE_PARTITIONING, invocationContext.getOffset(), false);
if (partition == null)
return false;
String type= partition.getType();
if (!(type.equals(IPropertiesFilePartitions.PROPERTY_VALUE) || type.equals(IDocument.DEFAULT_CONTENT_TYPE))) {
return false;
}
proposalOffset= partition.getOffset();
proposalLength= partition.getLength();
text= document.get(proposalOffset, proposalLength);
if (type.equals(IPropertiesFilePartitions.PROPERTY_VALUE)) {
text= text.substring(1); //see PropertiesFilePartitionScanner()
proposalOffset++;
proposalLength--;
}
} else {
proposalOffset= selectionOffset;
proposalLength= selectionLength;
text= document.get(proposalOffset, proposalLength);
}
if (PropertiesFileEscapes.containsUnescapedBackslash(text)) {
if (resultingCollections == null)
return true;
resultingCollections.add(new EscapeBackslashCompletionProposal(PropertiesFileEscapes.escape(text, false, true, false), proposalOffset, proposalLength,
PropertiesFileEditorMessages.EscapeBackslashCompletionProposal_escapeBackslashes));
return true;
}
if (PropertiesFileEscapes.containsEscapedBackslashes(text)) {
if (resultingCollections == null)
return true;
resultingCollections.add(new EscapeBackslashCompletionProposal(PropertiesFileEscapes.unescapeBackslashes(text), proposalOffset, proposalLength,
PropertiesFileEditorMessages.EscapeBackslashCompletionProposal_unescapeBackslashes));
return true;
}
return false;
}
private Object getSelectedElement(JavaEditor editor) {
ISourceViewer viewer= editor.getViewer();
if (viewer == null)
return null;
Point selectedRange= viewer.getSelectedRange();
int length= selectedRange.y;
int offset= selectedRange.x;
ITypeRoot element= JavaUI.getEditorInputTypeRoot(editor.getEditorInput());
if (element == null)
return null;
CompilationUnit ast= SharedASTProvider.getAST(element, SharedASTProvider.WAIT_YES, null);
if (ast == null)
return null;
NodeFinder finder= new NodeFinder(ast, offset, length);
ASTNode node= finder.getCoveringNode();
IBinding binding= null;
if (node instanceof Name) {
binding= getConstructorBindingIfAvailable((Name)node);
if (binding != null)
return binding;
binding= ((Name)node).resolveBinding();
} else if (node instanceof MethodInvocation) {
binding= ((MethodInvocation)node).resolveMethodBinding();
} else if (node instanceof MethodDeclaration) {
binding= ((MethodDeclaration)node).resolveBinding();
} else if (node instanceof Type) {
binding= ((Type)node).resolveBinding();
} else if (node instanceof AnonymousClassDeclaration) {
binding= ((AnonymousClassDeclaration)node).resolveBinding();
} else if (node instanceof TypeDeclaration) {
binding= ((TypeDeclaration)node).resolveBinding();
} else if (node instanceof CompilationUnit) {
return ((CompilationUnit)node).getJavaElement();
} else if (node instanceof Expression) {
binding= ((Expression)node).resolveTypeBinding();
} else if (node instanceof ImportDeclaration) {
binding= ((ImportDeclaration)node).resolveBinding();
} else if (node instanceof MemberRef) {
binding= ((MemberRef)node).resolveBinding();
} else if (node instanceof MemberValuePair) {
binding= ((MemberValuePair)node).resolveMemberValuePairBinding();
} else if (node instanceof PackageDeclaration) {
binding= ((PackageDeclaration)node).resolveBinding();
} else if (node instanceof TypeParameter) {
binding= ((TypeParameter)node).resolveBinding();
} else if (node instanceof VariableDeclaration) {
binding= ((VariableDeclaration)node).resolveBinding();
}
if (binding != null)
return binding.getJavaElement();
return null;
}
/**
* Mostly based on code from {@link org.eclipse.jdt.internal.ui.text.correction.proposals.LinkedNamesAssistProposal}
*/
private void startEditing(ISourceViewer viewer) throws ExecutionException {
Point selOffsetAndLen = viewer.getSelectedRange();
int selStart = CoordinatesUtil.fromOffsetAndLengthToStartAndEnd(selOffsetAndLen).x;
IDocument document = viewer.getDocument();
try {
String selectedText;
if (selOffsetAndLen.y == 0) { // no characters selected
String documentText = document.get();
Point wordOffsetAndLen = TextUtil.findWordSurrounding(documentText, selStart);
if (wordOffsetAndLen != null) {
selectedText = document.get(wordOffsetAndLen.x, wordOffsetAndLen.y);
} else {
IRegion selectedLine = document.getLineInformationOfOffset(selStart);
selectedText = document.get(selectedLine.getOffset(), selectedLine.getLength());
}
} else {
selectedText = document.get(selOffsetAndLen.x, selOffsetAndLen.y);
}
LinkedPositionGroup linkedPositionGroup = new LinkedPositionGroup();
FindReplaceDocumentAdapter findReplaceAdaptor = new FindReplaceDocumentAdapter(document);
IRegion matchingRegion = findReplaceAdaptor.find(0, selectedText, true, true, false, false);
while (matchingRegion != null) {
linkedPositionGroup.addPosition(new LinkedPosition(document, matchingRegion.getOffset(), matchingRegion
.getLength()));
matchingRegion = findReplaceAdaptor.find(matchingRegion.getOffset() + matchingRegion.getLength(),
selectedText, true, true, false, false);
}
LinkedModeModel model = new LinkedModeModel();
model.addGroup(linkedPositionGroup);
model.forceInstall();
LinkedModeUI ui = new EditorLinkedModeUI(model, viewer);
ui.setExitPolicy(new DeleteBlockingExitPolicy(document));
ui.enter();
// by default the text being edited is selected so restore original selection
viewer.setSelectedRange(selOffsetAndLen.x, selOffsetAndLen.y);
} catch (BadLocationException e) {
throw new ExecutionException("Editing failed", e);
}
}
private void startEditing(ISourceViewer viewer) throws ExecutionException {
final Point selOffsetAndLen = viewer.getSelectedRange();
final IDocument document = viewer.getDocument();
try {
final String searchText;
final int candidateSearchOffset;
final int selStart = CoordinatesUtil.fromOffsetAndLengthToStartAndEnd(selOffsetAndLen).x;
if (selOffsetAndLen.y == 0) { // no characters selected
final String documentText = document.get();
final Point wordOffsetAndLen = TextUtil.findWordSurrounding(documentText, selStart);
if (wordOffsetAndLen != null) {
searchText = document.get(wordOffsetAndLen.x, wordOffsetAndLen.y);
candidateSearchOffset = wordOffsetAndLen.x;
} else {
final IRegion selectedLine = document.getLineInformationOfOffset(selStart);
searchText = document.get(selectedLine.getOffset(), selectedLine.getLength());
candidateSearchOffset = selectedLine.getOffset();
}
} else {
searchText = document.get(selOffsetAndLen.x, selOffsetAndLen.y);
candidateSearchOffset = selOffsetAndLen.x;
}
final int searchOffset;
final List<IRegion> selections;
final Point startingSelection;
final SelectInProgress currentState = getCurrentState();
if (LinkedModeModel.getModel(document, 0) != null &&
currentState != null
&& selOffsetAndLen.equals(currentState.startingSelection)
&& searchText.equals(currentState.searchText)) {
startingSelection = currentState.startingSelection;
selections = new ArrayList<IRegion>(currentState.existingSelections);
searchOffset = currentState.nextOffset;
} else {
startingSelection = selOffsetAndLen;
selections = new ArrayList<IRegion>();
searchOffset = candidateSearchOffset;
}
final IRegion matchingRegion = new FindReplaceDocumentAdapter(document).find(searchOffset,
searchText, true, true, false, false);
if (matchingRegion != null) {
selections.add(matchingRegion);
if (selections.size() == 1) {
// select the next occurrence too; only selecting the current cursor pos isn't useful
final IRegion secondMatchingRegion = new FindReplaceDocumentAdapter(document).find(
matchingRegion.getOffset() + matchingRegion.getLength(), searchText, true, true, false, false);
if (secondMatchingRegion != null) {
selections.add(secondMatchingRegion);
}
}
if (selections.size() > 1) {
final IRegion lastSelection = selections.get(selections.size() - 1);
saveCurrentState(new SelectInProgress(startingSelection, searchText, selections,
lastSelection.getOffset() + lastSelection.getLength()));
startLinkedEdit(selections, viewer, selOffsetAndLen);
}
}
} catch (BadLocationException e) {
throw new ExecutionException("Editing failed", e);
}
}