-/*
- * (c) Copyright IBM Corp. 2000, 2001.
- * All Rights Reserved.
- */
+/**********************************************************************
+Copyright (c) 2000, 2002 IBM Corp. and others.
+All rights reserved. This program and the accompanying materials
+are made available under the terms of the Common Public License v1.0
+which accompanies this distribution, and is available at
+http://www.eclipse.org/legal/cpl-v10.html
+
+Contributors:
+ IBM Corporation - Initial implementation
+**********************************************************************/
+
package net.sourceforge.phpdt.internal.ui.text.link;
import java.util.Arrays;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.BadPositionCategoryException;
+import org.eclipse.jface.text.DocumentCommand;
import org.eclipse.jface.text.DocumentEvent;
+import org.eclipse.jface.text.IAutoEditStrategy;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IDocumentExtension;
import org.eclipse.jface.text.IDocumentListener;
import org.eclipse.jface.text.TypedPosition;
import org.eclipse.jface.util.Assert;
-//import org.eclipse.jdt.internal.ui.JavaPlugin;
/**
* This class manages linked positions in a document. Positions are linked
* gain control of the same document.
* </ul>
*/
-public class LinkedPositionManager implements IDocumentListener, IPositionUpdater {
-
- private static class PositionComparator implements Comparator {
- /*
- * @see Comparator#compare(Object, Object)
- */
- public int compare(Object object0, Object object1) {
- Position position0= (Position) object0;
- Position position1= (Position) object1;
-
- return position0.getOffset() - position1.getOffset();
- }
- }
-
+public class LinkedPositionManager implements IDocumentListener, IPositionUpdater, IAutoEditStrategy {
+
+ // This class still exists to properly handle code assist.
+ // This is due to the fact that it cannot be distinguished betweeen document changes which are
+ // issued by code assist and document changes which origin from another text viewer.
+ // There is a conflict in interest since in the latter case the linked mode should be left, but in the former case
+ // the linked mode should remain.
+ // To support content assist, document changes have to be propagated to connected positions
+ // by registering replace commands using IDocumentExtension.
+ // if it wasn't for the support of content assist, the documentChanged() method could be reduced to
+ // a simple call to leave(true)
private class Replace implements IDocumentExtension.IReplace {
private Position fReplacePosition;
document.addDocumentListener(owner);
}
}
+
+ private static class PositionComparator implements Comparator {
+ /*
+ * @see Comparator#compare(Object, Object)
+ */
+ public int compare(Object object0, Object object1) {
+ Position position0= (Position) object0;
+ Position position1= (Position) object1;
+
+ return position0.getOffset() - position1.getOffset();
+ }
+ }
private static final String LINKED_POSITION= "LinkedPositionManager.linked.position"; //$NON-NLS-1$
private static final Comparator fgPositionComparator= new PositionComparator();
try {
fDocument.addPosition(LINKED_POSITION, new TypedPosition(offset, length, type));
} catch (BadPositionCategoryException e) {
- PHPeclipsePlugin.log(e);
+ PHPeclipsePlugin.log(e);
Assert.isTrue(false);
}
}
fDocument.removePositionCategory(LINKED_POSITION);
} catch (BadLocationException e) {
- PHPeclipsePlugin.log(e);
+ PHPeclipsePlugin.log(e);
Assert.isTrue(false);
} catch (BadPositionCategoryException e) {
- PHPeclipsePlugin.log(e);
+ PHPeclipsePlugin.log(e);
Assert.isTrue(false);
} finally {
}
/**
+ * Returns the position at the given offset, <code>null</code> if there is no position.
+ * @since 2.1
+ */
+ public Position getPosition(int offset) {
+ Position[] positions= getPositions(fDocument);
+ if (positions == null)
+ return null;
+
+ for (int i= positions.length - 1; i >= 0; i--) {
+ Position position= positions[i];
+ if (offset >= position.getOffset() && offset <= position.getOffset() + position.getLength())
+ return positions[i];
+ }
+
+ return null;
+ }
+
+ /**
* Returns the first linked position.
*
* @return returns <code>null</code> if no linked position exist.
* @return returns <code>null</code> if no linked position exist.
*/
public Position getPreviousPosition(int offset) {
- Position[] positions= getPositions(fDocument);
+ Position[] positions= getPositions(fDocument);
if (positions == null)
return null;
+ TypedPosition currentPosition= (TypedPosition) findCurrentPosition(positions, offset);
+ String currentType= currentPosition == null ? null : currentPosition.getType();
+
Position lastPosition= null;
Position position= getFirstPosition();
-
- while ((position != null) && (position.getOffset() < offset)) {
+
+ while ((position != null) && (position.getOffset() < offset) && !((TypedPosition) position).getType().equals(currentType)) {
lastPosition= position;
position= findNextPosition(positions, position.getOffset());
- }
+ }
return lastPosition;
}
return positions;
} catch (BadPositionCategoryException e) {
- PHPeclipsePlugin.log(e);
+ PHPeclipsePlugin.log(e);
Assert.isTrue(false);
}
* @see IDocumentListener#documentAboutToBeChanged(DocumentEvent)
*/
public void documentAboutToBeChanged(DocumentEvent event) {
+
IDocument document= event.getDocument();
Position[] positions= getPositions(document);
- Position position= findCurrentEditablePosition(positions, event.getOffset());
+ Position position= findCurrentPosition(positions, event.getOffset());
// modification outside editable position
if (position == null) {
- position= findCurrentPosition(positions, event.getOffset());
-
- // modification outside any position
- if (position == null) {
- // check for destruction of constraints (spacing of at least 1)
- if ((event.getText().length() == 0) &&
- (findCurrentPosition(positions, event.getOffset()) != null) &&
- (findCurrentPosition(positions, event.getOffset() + event.getLength()) != null))
- {
- leave(true);
- }
-
- // modification intersects non-editable position
- } else {
+ // check for destruction of constraints (spacing of at least 1)
+ if ((event.getText() == null || event.getText().length() == 0) &&
+ (findCurrentPosition(positions, event.getOffset()) != null) &&
+ (findCurrentPosition(positions, event.getOffset() + event.getLength()) != null))
+ {
leave(true);
- }
+ }
// modification intersects editable position
} else {
/*
* @see IDocumentListener#documentChanged(DocumentEvent)
*/
- public void documentChanged(DocumentEvent event) {
+ public void documentChanged(DocumentEvent event) {
+
+ // have to handle code assist, so can't just leave the linked mode
+ // leave(true);
+
IDocument document= event.getDocument();
Position[] positions= getPositions(document);
- TypedPosition currentPosition= (TypedPosition) findCurrentEditablePosition(positions, event.getOffset());
+ TypedPosition currentPosition= (TypedPosition) findCurrentPosition(positions, event.getOffset());
// ignore document changes (assume it won't invalidate constraints)
if (currentPosition == null)
int deltaOffset= event.getOffset() - currentPosition.getOffset();
- if (fListener != null)
- fListener.setCurrentPosition(currentPosition, deltaOffset + event.getText().length());
-
+ if (fListener != null) {
+ int length= event.getText() == null ? 0 : event.getText().length();
+ fListener.setCurrentPosition(currentPosition, deltaOffset + length);
+ }
+
for (int i= 0; i != positions.length; i++) {
TypedPosition p= (TypedPosition) positions[i];
* @see IPositionUpdater#update(DocumentEvent)
*/
public void update(DocumentEvent event) {
- int deltaLength= event.getText().length() - event.getLength();
+ int deltaLength= (event.getText() == null ? 0 : event.getText().length()) - event.getLength();
Position[] positions= getPositions(event.getDocument());
TypedPosition currentPosition= (TypedPosition) findCurrentPosition(positions, event.getOffset());
return null;
}
- private static Position findCurrentEditablePosition(Position[] positions, int offset) {
- Position position= positions[0];
-
- while ((position != null) && !includes(position, offset, 0))
- position= findNextPosition(positions, position.getOffset());
-
- return position;
- }
-
private boolean containsLineDelimiters(String string) {
+
+ if (string == null)
+ return false;
+
String[] delimiters= fDocument.getLegalLineDelimiters();
for (int i= 0; i != delimiters.length; i++)
public boolean anyPositionIncludes(int offset, int length) {
Position[] positions= getPositions(fDocument);
- Position position= findCurrentEditablePosition(positions, offset);
+ Position position= findCurrentPosition(positions, offset);
if (position == null)
return false;
return includes(position, offset, length);
}
-}
+ /*
+ * @see org.eclipse.jface.text.IAutoIndentStrategy#customizeDocumentCommand(org.eclipse.jface.text.IDocument, org.eclipse.jface.text.DocumentCommand)
+ */
+ public void customizeDocumentCommand(IDocument document, DocumentCommand command) {
+
+ // don't interfere with preceding auto edit strategies
+ if (command.getCommandCount() != 1) {
+ leave(true);
+ return;
+ }
+
+ Position[] positions= getPositions(document);
+ TypedPosition currentPosition= (TypedPosition) findCurrentPosition(positions, command.offset);
+
+ // handle edits outside of a position
+ if (currentPosition == null) {
+ leave(true);
+ return;
+ }
+
+ if (! command.doit)
+ return;
+
+ command.doit= false;
+ command.owner= this;
+ command.caretOffset= command.offset + command.length;
+
+ int deltaOffset= command.offset - currentPosition.getOffset();
+
+ if (fListener != null)
+ fListener.setCurrentPosition(currentPosition, deltaOffset + command.text.length());
+
+ for (int i= 0; i != positions.length; i++) {
+ TypedPosition position= (TypedPosition) positions[i];
+
+ try {
+ if (position.getType().equals(currentPosition.getType()) && !position.equals(currentPosition))
+ command.addCommand(position.getOffset() + deltaOffset, command.length, command.text, this);
+ } catch (BadLocationException e) {
+ PHPeclipsePlugin.log(e);
+ }
+ }
+ }
+
+}
\ No newline at end of file
git://git.phpeclipse.com / phpeclipse.git / blobdiff