/*******************************************************************************
* Copyright (c) 2000, 2013 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.ui.text.java;
import org.eclipse.che.jdt.javaeditor.HasLinkedModel;
import org.eclipse.jdt.core.CompletionProposal;
import org.eclipse.jdt.internal.ui.JavaPlugin;
import org.eclipse.jdt.ui.text.java.JavaContentAssistInvocationContext;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.Region;
import org.eclipse.swt.graphics.Point;
import static org.eclipse.che.ide.ext.java.server.dto.DtoServerImpls.LinkedModeModelImpl;
import static org.eclipse.che.ide.ext.java.server.dto.DtoServerImpls.LinkedPositionGroupImpl;
import static org.eclipse.che.ide.ext.java.server.dto.DtoServerImpls.RegionImpl;
/**
* A method proposal with filled in argument names.
*/
public class FilledArgumentNamesMethodProposal extends JavaMethodCompletionProposal implements HasLinkedModel {
private IRegion fSelectedRegion; // initialized by apply()
private int[] fArgumentOffsets;
private int[] fArgumentLengths;
private LinkedModeModelImpl linkedModel;
public FilledArgumentNamesMethodProposal(CompletionProposal proposal, JavaContentAssistInvocationContext context) {
super(proposal, context);
}
/*
* @see ICompletionProposalExtension#apply(IDocument, char)
*/
@Override
public void apply(IDocument document, char trigger, int offset) {
super.apply(document, trigger, offset);
int baseOffset = getReplacementOffset();
String replacement = getReplacementString();
if (fArgumentOffsets != null && getTextViewer() != null) {
LinkedModeModelImpl model = new LinkedModeModelImpl();
for (int i = 0; i != fArgumentOffsets.length; i++) {
LinkedPositionGroupImpl group = new LinkedPositionGroupImpl();
RegionImpl region = new RegionImpl();
region.setLength(fArgumentLengths[i]);
region.setOffset(baseOffset + fArgumentOffsets[i]);
group.addPositions(region);
model.addGroups(group);
}
model.setEscapePosition( baseOffset + replacement.length());
this.linkedModel = model;
// model.forceInstall();
// JavaEditor editor = getJavaEditor();
// if (editor != null) {
// model.addLinkingListener(new EditorHighlightingSynchronizer(editor));
// }
//
// LinkedModeUI ui = new EditorLinkedModeUI(model, getTextViewer());
// ui.setExitPosition(getTextViewer(), baseOffset + replacement.length(), 0, Integer.MAX_VALUE);
// ui.setExitPolicy(new ExitPolicy(')', document));
// ui.setDoContextInfo(true);
// ui.setCyclingMode(LinkedModeUI.CYCLE_WHEN_NO_PARENT);
// ui.enter();
fSelectedRegion = new Region(baseOffset + replacement.length(), 0);
} else {
fSelectedRegion = new Region(baseOffset + replacement.length(), 0);
}
}
/*
* @see org.eclipse.jdt.internal.ui.text.java.JavaMethodCompletionProposal#needsLinkedMode()
*/
@Override
protected boolean needsLinkedMode() {
return false; // we handle it ourselves
}
/*
* @see org.eclipse.jdt.internal.ui.text.java.LazyJavaCompletionProposal#computeReplacementString()
*/
@Override
protected String computeReplacementString() {
if (!hasParameters() || !hasArgumentList())
return super.computeReplacementString();
StringBuffer buffer= new StringBuffer();
appendMethodNameReplacement(buffer);
char[][] parameterNames= fProposal.findParameterNames(null);
int count= parameterNames.length;
fArgumentOffsets= new int[count];
fArgumentLengths= new int[count];
FormatterPrefs prefs= getFormatterPrefs();
setCursorPosition(buffer.length());
if (prefs.afterOpeningParen)
buffer.append(SPACE);
for (int i= 0; i != count; i++) {
if (i != 0) {
if (prefs.beforeComma)
buffer.append(SPACE);
buffer.append(COMMA);
if (prefs.afterComma)
buffer.append(SPACE);
}
fArgumentOffsets[i]= buffer.length();
buffer.append(parameterNames[i]);
fArgumentLengths[i]= parameterNames[i].length;
}
if (prefs.beforeClosingParen)
buffer.append(SPACE);
buffer.append(RPAREN);
if (canAutomaticallyAppendSemicolon())
buffer.append(SEMICOLON);
return buffer.toString();
}
// /**
// * Returns the currently active java editor, or <code>null</code> if it
// * cannot be determined.
// *
// * @return the currently active java editor, or <code>null</code>
// */
// private JavaEditor getJavaEditor() {
// IEditorPart part= JavaPlugin.getActivePage().getActiveEditor();
// if (part instanceof JavaEditor)
// return (JavaEditor) part;
// else
// return null;
// }
/*
* @see ICompletionProposal#getSelection(IDocument)
*/
@Override
public Point getSelection(IDocument document) {
if (fSelectedRegion == null)
return new Point(getReplacementOffset(), 0);
return new Point(fSelectedRegion.getOffset(), fSelectedRegion.getLength());
}
private void openErrorDialog(BadLocationException e) {
// Shell shell= getTextViewer().getTextWidget().getShell();
// MessageDialog.openError(shell, JavaTextMessages.FilledArgumentNamesMethodProposal_error_msg, e.getMessage());\
JavaPlugin.log(e);
}
@Override
public org.eclipse.che.ide.ext.java.shared.dto.LinkedModeModel getLinkedModel() {
return linkedModel;
}
}