| /******************************************************************************* |
| * Copyright (c) 2004 John-Mason P. Shackelford 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: |
| * John-Mason P. Shackelford - initial API and implementation |
| * IBM Corporation - bug 52076 |
| *******************************************************************************/ |
| |
| package org.eclipse.ant.internal.ui.editor.formatter; |
| |
| import java.util.LinkedList; |
| |
| import org.eclipse.jface.text.Assert; |
| 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.ContextBasedFormattingStrategy; |
| import org.eclipse.jface.text.formatter.FormattingContext; |
| import org.eclipse.jface.text.formatter.FormattingContextProperties; |
| import org.eclipse.jface.text.formatter.IFormattingContext; |
| import org.eclipse.jface.text.source.ISourceViewer; |
| |
| public class XmlElementFormattingStrategy extends |
| ContextBasedFormattingStrategy { |
| |
| /** Indentations to use by this strategy */ |
| private final LinkedList fIndentations = new LinkedList(); |
| |
| /** Partitions to be formatted by this strategy */ |
| private final LinkedList fPartitions = new LinkedList(); |
| |
| /** The position sets to keep track of during formatting */ |
| private final LinkedList fPositions = new LinkedList(); |
| |
| /** access to the preferences store **/ |
| private final FormattingPreferences prefs = new FormattingPreferences(); |
| |
| public XmlElementFormattingStrategy(ISourceViewer viewer) { |
| super(viewer); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.text.formatter.IFormattingStrategyExtension#format() |
| */ |
| public void format() { |
| |
| super.format(); |
| |
| Assert.isLegal(fPartitions.size() > 0); |
| Assert.isLegal(fIndentations.size() > 0); |
| |
| TypedPosition partition = (TypedPosition) fPartitions.removeFirst(); |
| String lineIndent = fIndentations.removeFirst().toString(); |
| IDocument document = getViewer().getDocument(); |
| |
| try { |
| |
| String formatted = formatElement(document, partition, lineIndent); |
| |
| String partitionText = document.get(partition.getOffset(), |
| partition.getLength()); |
| |
| if (formatted != null && !formatted.equals(partitionText)) { |
| document.replace(partition.getOffset(), partition.getLength(), |
| formatted); |
| } |
| |
| } catch (BadLocationException e) { |
| } |
| } |
| |
| private String formatElement(IDocument document, TypedPosition partition, |
| String indentation) throws BadLocationException { |
| |
| String partitionText = document.get(partition.getOffset(), partition |
| .getLength()); |
| |
| IRegion line = document.getLineInformationOfOffset(partition |
| .getOffset()); |
| |
| FormattingPreferences prefs = new FormattingPreferences(); |
| |
| int indentLength = partition.getOffset() - line.getOffset(); |
| |
| return new XmlTagFormatter().format(partitionText, prefs, document.get(line.getOffset(), |
| indentLength)); |
| |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.text.formatter.IFormattingStrategyExtension#formatterStarts(org.eclipse.jface.text.formatter.IFormattingContext) |
| */ |
| public void formatterStarts(IFormattingContext context) { |
| super.formatterStarts(context); |
| |
| FormattingContext current = (FormattingContext) context; |
| |
| fIndentations.addLast(current |
| .getProperty(FormattingContextProperties.CONTEXT_INDENTATION)); |
| fPartitions.addLast(current |
| .getProperty(FormattingContextProperties.CONTEXT_PARTITION)); |
| fPositions.addLast(current |
| .getProperty(FormattingContextProperties.CONTEXT_POSITIONS)); |
| |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.text.formatter.IFormattingStrategyExtension#formatterStops() |
| */ |
| public void formatterStops() { |
| super.formatterStops(); |
| |
| fIndentations.clear(); |
| fPartitions.clear(); |
| fPositions.clear(); |
| } |
| |
| } |