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/*******************************************************************************
* Copyright (c) 2000, 2008 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.ui.texteditor.templates;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.contentassist.ICompletionProposal;
import org.eclipse.jface.text.contentassist.IContextInformation;
import org.eclipse.jface.text.templates.TemplateVariableResolver;
/**
* A proposal for insertion of template variables.
* <p>
* This class should not be used by clients and may become package visible in
* the future.
* </p>
*
* @since 3.0
*/
final class TemplateVariableProposal implements ICompletionProposal {
private TemplateVariableResolver fVariable;
private int fOffset;
private int fLength;
private ITextViewer fViewer;
private Point fSelection;
/**
* Creates a template variable proposal.
*
* @param variable the template variable
* @param offset the offset to replace
* @param length the length to replace
* @param viewer the viewer
*/
public TemplateVariableProposal(TemplateVariableResolver variable, int offset, int length, ITextViewer viewer) {
fVariable= variable;
fOffset= offset;
fLength= length;
fViewer= viewer;
}
@Override
public void apply(IDocument document) {
try {
String variable= fVariable.getType().equals("dollar") ? "$$" : "${" + fVariable.getType() + '}'; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
document.replace(fOffset, fLength, variable);
fSelection= new Point(fOffset + variable.length(), 0);
} catch (BadLocationException e) {
Shell shell= fViewer.getTextWidget().getShell();
MessageDialog.openError(shell, TemplatesMessages.TemplateVariableProposal_error_title, e.getMessage());
}
}
@Override
public Point getSelection(IDocument document) {
return fSelection;
}
@Override
public String getAdditionalProposalInfo() {
return null;
}
@Override
public String getDisplayString() {
return fVariable.getType() + " - " + fVariable.getDescription(); //$NON-NLS-1$
}
@Override
public Image getImage() {
return null;
}
@Override
public IContextInformation getContextInformation() {
return null;
}
}
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