@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
if (oldInput != null) {
IDocument document = fDocumentProvider.getDocument(oldInput);
if (document != null) {
try {
document.removePositionCategory(JSON_ELEMENTS);
} catch (BadPositionCategoryException x) {
}
document.removePositionUpdater(fPositionUpdater);
}
}
rootObject = null;
if (newInput != null) {
IDocument document = fDocumentProvider.getDocument(newInput);
if (document != null) {
document.addPositionCategory(JSON_ELEMENTS);
document.addPositionUpdater(fPositionUpdater);
parse(document);
}
}
}
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
clearAnnotations();
if (oldInput != null) {
IDocument document = documentProvider.getDocument(oldInput);
if (document != null) {
try {
document.removePositionCategory(SEGMENTS);
} catch (BadPositionCategoryException e) {
// Do Nothing
}
document.removePositionUpdater(positionUpdater);
}
}
if (newInput != null) {
IDocument document = documentProvider.getDocument(newInput);
if (document != null) {
document.addPositionCategory(SEGMENTS);
document.addPositionUpdater(positionUpdater);
tree = parser.parse(document.get());
addAnnotations(document.get());
}
}
}
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
if (oldInput != null) {
IDocument document = documentProvider.getDocument(oldInput);
if (document != null) {
try {
document.removePositionCategory(CLASS_POSITIONS);
} catch (BadPositionCategoryException x) {
}
document.removePositionUpdater(positionUpdater);
}
}
editorInput = (IEditorInput) newInput;
if (newInput != null) {
IDocument document = documentProvider.getDocument(newInput);
if (document != null) {
document.addPositionCategory(CLASS_POSITIONS);
document.addPositionUpdater(positionUpdater);
editorPageChanged(viewer);
}
}
viewer.refresh();
}
/**
* Remembers and returns the current selection. The saved selection can be restored by calling
* <code>restoreSelection()</code>.
*
* @return the current selection
* @see org.eclipse.jface.text.ITextViewer#getSelectedRange()
* @since 3.0
*/
protected Point rememberSelection() {
final ITextSelection selection = (ITextSelection) getSelection();
final IDocument document = getDocument();
if (fSelections.isEmpty()) {
fSelectionCategory = _SELECTION_POSITION_CATEGORY + hashCode();
fSelectionUpdater = new NonDeletingPositionUpdater(fSelectionCategory);
document.addPositionCategory(fSelectionCategory);
document.addPositionUpdater(fSelectionUpdater);
}
try {
final Position position;
if (selection instanceof IBlockTextSelection)
position =
new ColumnPosition(
selection.getOffset(),
selection.getLength(),
((IBlockTextSelection) selection).getStartColumn(),
((IBlockTextSelection) selection).getEndColumn());
else position = new Position(selection.getOffset(), selection.getLength());
document.addPosition(fSelectionCategory, position);
fSelections.push(position);
} catch (BadLocationException exception) {
// Should not happen
} catch (BadPositionCategoryException exception) {
// Should not happen
}
return new Point(selection.getOffset(), selection.getLength());
}
/**
* Installs this position manager in the given document. The position manager stays active until
* <code>uninstall</code> or <code>dispose</code> is called.
*
* @param document the document to be installed on
*/
public void install(IDocument document) {
if (document != null && this.fDocument != document) {
fDocument = document;
fDocument.addPositionCategory(fCategory);
fDocument.addPositionUpdater(fPositionUpdater);
}
}
private void rewriteImports() {
if (fImportRewrite == null) return;
if (isReadOnly()) return;
ICompilationUnit cu = getCompilationUnit();
if (cu == null) return;
try {
Position position = new Position(getCompletionOffset(), 0);
IDocument document = getDocument();
final String category =
"__template_position_importer" + System.currentTimeMillis(); // $NON-NLS-1$
IPositionUpdater updater = new DefaultPositionUpdater(category);
document.addPositionCategory(category);
document.addPositionUpdater(updater);
document.addPosition(position);
try {
JavaModelUtil.applyEdit(cu, fImportRewrite.rewriteImports(null), false, null);
setCompletionOffset(position.getOffset());
} catch (CoreException e) {
handleException(null, e);
} finally {
document.removePosition(position);
document.removePositionUpdater(updater);
document.removePositionCategory(category);
}
} catch (BadLocationException e) {
handleException(null, e);
} catch (BadPositionCategoryException e) {
handleException(null, e);
}
}
private void ensurePositionCategoryInstalled(final IDocument document, LinkedModeModel model) {
if (!document.containsPositionCategory(getCategory())) {
document.addPositionCategory(getCategory());
fUpdater = new InclusivePositionUpdater(getCategory());
document.addPositionUpdater(fUpdater);
model.addLinkingListener(
new ILinkedModeListener() {
/*
* @see org.eclipse.jface.text.link.ILinkedModeListener#left(org.eclipse.jface.text.link.LinkedModeModel, int)
*/
@Override
public void left(LinkedModeModel environment, int flags) {
ensurePositionCategoryRemoved(document);
}
@Override
public void suspend(LinkedModeModel environment) {}
@Override
public void resume(LinkedModeModel environment, int flags) {}
});
}
}
/**
* Called before document changes occur. It must be followed by a call to postReplace().
*
* @param document the document on which to track the reference position.
* @param offset the offset
* @throws BadLocationException if the offset describes an invalid range in this document
*/
public void preReplace(IDocument document, int offset) throws BadLocationException {
fPosition.setOffset(offset);
try {
document.addPositionCategory(CATEGORY);
document.addPositionUpdater(fPositionUpdater);
document.addPosition(CATEGORY, fPosition);
} catch (BadPositionCategoryException e) {
// should not happen
DartToolsPlugin.log(e);
}
}
/*
* @see org.eclipse.swt.dnd.DragSourceListener#dragStart(org.eclipse.swt.dnd.DragSourceEvent)
*/
@Override
public void dragStart(DragSourceEvent event) {
if (!fIsEnabled) {
event.doit = false;
return;
}
// convert screen coordinates to widget offest
int offset = getOffsetAtLocation(event.x, event.y, false);
// convert further to a document offset
offset = getDocumentOffset(offset);
Point selection = fViewer.getSelectedRange();
if (selection != null && offset >= selection.x && offset < selection.x + selection.y) {
fSelectionPosition = new Position(selection.x, selection.y);
if (fViewer instanceof ITextViewerExtension) {
((ITextViewerExtension) fViewer).getRewriteTarget().beginCompoundChange();
}
IDocument doc = fViewer.getDocument();
try {
// add the drag selection position
// the position is used to delete the selection on a DROP_MOVE
// and it can be used by the drop target to determine if it should
// allow the drop (e.g. if drop location overlaps selection)
doc.addPositionCategory(DRAG_SELECTION_CATEGORY);
fPositionUpdater = new DefaultPositionUpdater(DRAG_SELECTION_CATEGORY);
doc.addPositionUpdater(fPositionUpdater);
doc.addPosition(DRAG_SELECTION_CATEGORY, fSelectionPosition);
} catch (BadLocationException e) {
// should not happen
} catch (BadPositionCategoryException e) {
// cannot happen
}
event.doit = true;
// this has no effect?
event.detail = DND.DROP_COPY;
if (isDocumentEditable()) {
event.detail |= DND.DROP_MOVE;
}
} else {
event.doit = false;
event.detail = DND.DROP_NONE;
}
}
/** @see org.eclipse.swt.custom.VerifyKeyListener#verifyKey(org.eclipse.swt.events.VerifyEvent) */
public void verifyKey(VerifyEvent event) {
// early pruning to slow down normal typing as little as possible
if (!event.doit || !isAutoInsertEnabled() || !isAutoInsertCharacter(event.character)) {
return;
}
IDocument document = textViewer.getDocument();
final Point selection = textViewer.getSelectedRange();
final int offset = selection.x;
final int length = selection.y;
try {
String scope = getScopeAtOffset(document, offset);
if (fgCommentSelector.matches(scope)) {
return;
}
if (length > 0) {
wrapSelection(event, document, offset, length);
return;
}
// Don't auto-close if next char is a letter or digit
if (document.getLength() > offset) {
char nextChar = document.getChar(offset);
if (Character.isJavaIdentifierPart(nextChar)) {
return;
}
}
// Don't auto-close if we have an open pair!
if (isUnclosedPair(
event, document, offset)) // We have an open string or pair, just insert the single
// character, don't do anything special
{
return;
}
final char closingCharacter = getPeerCharacter(event.character);
// If this is the start char and there's no unmatched close char, insert the close char
if (unpairedClose(event.character, closingCharacter, document, offset)) {
return;
}
final StringBuffer buffer = new StringBuffer();
buffer.append(event.character);
buffer.append(closingCharacter);
if (offset == document.getLength()) {
String delim = null;
if (document instanceof IDocumentExtension4) {
delim = ((IDocumentExtension4) document).getDefaultLineDelimiter();
}
if (delim == null) {
delim = System.getProperty("line.separator", "\r\n"); // $NON-NLS-1$ //$NON-NLS-2$
}
buffer.append(delim);
}
document.replace(offset, length, buffer.toString());
BracketLevel level = new BracketLevel();
fBracketLevelStack.push(level);
LinkedPositionGroup group = new LinkedPositionGroup();
group.addPosition(new LinkedPosition(document, offset + 1, 0, LinkedPositionGroup.NO_STOP));
LinkedModeModel model = new LinkedModeModel();
model.addLinkingListener(this);
model.addGroup(group);
model.forceInstall();
// set up position tracking for our magic peers
if (fBracketLevelStack.size() == 1) {
document.addPositionCategory(CATEGORY);
document.addPositionUpdater(fUpdater);
}
level.fFirstPosition = new Position(offset, 1);
level.fSecondPosition = new Position(offset + 1, 1);
document.addPosition(CATEGORY, level.fFirstPosition);
document.addPosition(CATEGORY, level.fSecondPosition);
level.fUI = new EditorLinkedModeUI(model, textViewer);
level.fUI.setSimpleMode(true);
level.fUI.setExitPolicy(
new ExitPolicy(
textViewer,
closingCharacter,
getEscapeCharacter(closingCharacter),
fBracketLevelStack));
level.fUI.setExitPosition(textViewer, offset + 2, 0, Integer.MAX_VALUE);
level.fUI.setCyclingMode(LinkedModeUI.CYCLE_NEVER);
level.fUI.enter();
IRegion newSelection = level.fUI.getSelectedRegion();
textViewer.setSelectedRange(newSelection.getOffset(), newSelection.getLength());
event.doit = false;
} catch (BadLocationException e) {
CommonEditorPlugin.logError(e);
} catch (BadPositionCategoryException e) {
CommonEditorPlugin.logError(e);
}
}