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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Eclipse Public License, Version 1.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.eclipse.org/org/documents/epl-v10.php
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.ide.eclipse.adt.internal.editors.formatting;
import com.android.ide.eclipse.adt.internal.preferences.AdtPrefs;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.TypedPosition;
import org.eclipse.jface.text.formatter.FormattingContext;
import org.eclipse.jface.text.formatter.FormattingContextProperties;
import org.eclipse.jface.text.formatter.IContentFormatter;
import org.eclipse.jface.text.formatter.IContentFormatterExtension;
import org.eclipse.jface.text.formatter.IFormattingContext;
import org.eclipse.jface.text.formatter.IFormattingStrategy;
import org.eclipse.wst.xml.core.text.IXMLPartitions;
/**
* Formatter which replaces the Eclipse formatter for the Android XML editors, and
* delegates to it if the user has chosen to use the Eclipse formatter instead by turning
* off {@link AdtPrefs#getUseCustomXmlFormatter()}
*/
public class AndroidXmlFormatter implements IContentFormatter, IContentFormatterExtension {
@Override
public final void format(IDocument document, IRegion region) {
/**
* This method is probably not going to be called. It is part of the
* {@link IContentFormatter} but since we also implement
* {@link IContentFormatterExtension} Eclipse should /* be calling
* {@link #format(IDocument,IFormattingContext)} instead. However, for
* completeness (and because other implementations of {@link IContentFormatter}
* also do this we might as well make the method behave correctly
*/
FormattingContext context = new FormattingContext();
context.setProperty(FormattingContextProperties.CONTEXT_DOCUMENT, Boolean.FALSE);
context.setProperty(FormattingContextProperties.CONTEXT_REGION, region);
format(document, context);
}
@Override
public IFormattingStrategy getFormattingStrategy(String contentType) {
return new AndroidXmlFormattingStrategy();
}
@Override
public void format(IDocument document, IFormattingContext context) {
context.setProperty(FormattingContextProperties.CONTEXT_MEDIUM, document);
formatMaster(context, document, 0, document.getLength());
}
protected void formatMaster(IFormattingContext context, IDocument document, int offset,
int length) {
try {
final int delta= offset - document.getLineInformationOfOffset(offset).getOffset();
offset -= delta;
length += delta;
} catch (BadLocationException exception) {
// Do nothing
}
AndroidXmlFormattingStrategy strategy = new AndroidXmlFormattingStrategy();
context.setProperty(FormattingContextProperties.CONTEXT_PARTITION,
new TypedPosition(offset, length, IXMLPartitions.XML_DEFAULT));
strategy.formatterStarts(context);
strategy.format();
strategy.formatterStops();
}
}
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