/*******************************************************************************
* Copyright (c) 2000, 2016 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
* Anton Leherbauer (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.internal.ui.preferences.formatter;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Map;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.text.Document;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.text.edits.TextEdit;
import org.eclipse.cdt.ui.CUIPlugin;
import org.eclipse.cdt.internal.corext.util.CodeFormatterUtil;
import org.eclipse.cdt.internal.ui.ICStatusConstants;
public class SnippetPreview extends CPreview {
public final static class PreviewSnippet {
public String header;
public final String source;
public final int kind;
public PreviewSnippet(int kind, String source) {
this.kind= kind;
this.source= source;
}
}
private ArrayList<PreviewSnippet> fSnippets;
public SnippetPreview(Map<String, String> workingValues, Composite parent) {
super(workingValues, parent);
fSnippets= new ArrayList<PreviewSnippet>();
}
@Override
protected void doFormatPreview() {
if (fSnippets.isEmpty()) {
fPreviewDocument.set(""); //$NON-NLS-1$
return;
}
// This delimiter looks best for invisible characters
final String delimiter= "\n"; //$NON-NLS-1$
final StringBuilder buffer= new StringBuilder();
for (PreviewSnippet snippet: fSnippets) {
String formattedSource;
try {
TextEdit edit= CodeFormatterUtil.format(snippet.kind, snippet.source, 0, delimiter,
fWorkingValues);
if (edit == null) {
formattedSource= snippet.source;
} else {
Document document= new Document(snippet.source);
edit.apply(document, TextEdit.NONE);
formattedSource= document.get();
}
} catch (Exception e) {
final IStatus status= new Status(IStatus.ERROR, CUIPlugin.getPluginId(),
ICStatusConstants.INTERNAL_ERROR,
FormatterMessages.CPreview_formatter_exception, e);
CUIPlugin.log(status);
continue;
}
buffer.append(delimiter);
buffer.append(formattedSource);
buffer.append(delimiter);
buffer.append(delimiter);
}
fPreviewDocument.set(buffer.toString());
}
public void add(PreviewSnippet snippet) {
fSnippets.add(snippet);
}
public void remove(PreviewSnippet snippet) {
fSnippets.remove(snippet);
}
public void addAll(Collection<PreviewSnippet> snippets) {
fSnippets.addAll(snippets);
}
public void clear() {
fSnippets.clear();
}
}