bundles/org.eclipse.wst.css.core/src/org/eclipse/wst/css/core/internal/formatter/StyleDeclItemFormatter.java - sourceediting/webtools.sourceediting - Git at Google

 /*******************************************************************************
  * Copyright (c) 2004, 2005 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.wst.css.core.internal.formatter;


 import org.eclipse.core.runtime.Preferences;
 import org.eclipse.jface.text.IRegion;
 import org.eclipse.wst.css.core.internal.CSSCorePlugin;
 import org.eclipse.wst.css.core.internal.cleanup.CSSCleanupStrategy;
 import org.eclipse.wst.css.core.internal.parserz.CSSRegionContexts;
 import org.eclipse.wst.css.core.internal.preferences.CSSCorePreferenceNames;
 import org.eclipse.wst.css.core.internal.provisional.document.ICSSAttr;
 import org.eclipse.wst.css.core.internal.provisional.document.ICSSNode;
 import org.eclipse.wst.css.core.internal.provisional.document.ICSSPrimitiveValue;
 import org.eclipse.wst.css.core.internal.provisional.document.ICSSStyleDeclItem;
 import org.eclipse.wst.css.core.internal.util.RegionIterator;
 import org.eclipse.wst.sse.core.internal.provisional.IndexedRegion;
 import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument;
 import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion;
 import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegion;


 /**
  *
  */
 public class StyleDeclItemFormatter extends DefaultCSSSourceFormatter {

 	private static StyleDeclItemFormatter instance;

 	/**
 	 *
 	 */
 	StyleDeclItemFormatter() {
 		super();
 	}

 	/**
 	 *
 	 */
 	private void appendAfterColonSpace(ICSSNode node, StringBuffer source) {
 		Preferences preferences = CSSCorePlugin.getDefault().getPluginPreferences();
 		int n = preferences.getInt(CSSCorePreferenceNames.FORMAT_PROP_POST_DELIM);

 		if (preferences.getInt(CSSCorePreferenceNames.LINE_WIDTH) > 0 && (!preferences.getBoolean(CSSCorePreferenceNames.WRAPPING_PROHIBIT_WRAP_ON_ATTR) || node.getOwnerDocument().getNodeType() != ICSSNode.STYLEDECLARATION_NODE)) {
 			int length = getLastLineLength(node, source);
 			int append = getFirstChildRegionLength(node);
 			if (length + n + append > preferences.getInt(CSSCorePreferenceNames.LINE_WIDTH)) {
 				source.append(getLineDelimiter(node));
 				source.append(getIndent(node));
 				source.append(getIndentString());
 				n = 0; // no space is necessary
 			}
 		}
 		// no delimiter case
 		while (n-- > 0)
 			source.append(" ");//$NON-NLS-1$
 	}

 	/**
 	 *
 	 */
 	private int getFirstChildRegionLength(ICSSNode node) {
 		ICSSNode firstChild = node.getFirstChild();
 		if (firstChild == null)
 			return 1;
 		int start = ((IndexedRegion) firstChild).getStartOffset();
 		RegionIterator itr = new RegionIterator(node.getOwnerDocument().getModel().getStructuredDocument(), start);
 		while (itr.hasNext()) {
 			ITextRegion reg = itr.next();
 			if (reg != null && reg.getType() != CSSRegionContexts.CSS_S)
 				return reg.getTextLength();
 		}
 		return 1;
 	}

 	/**
 	 *
 	 */
 	public StringBuffer formatAttrChanged(ICSSNode node, ICSSAttr attr, boolean insert, AttrChangeContext context) {
 		StringBuffer buf = new StringBuffer();
 		if (node == null || attr == null)
 			return buf;

 		if (!ICSSStyleDeclItem.IMPORTANT.equalsIgnoreCase(attr.getName()))
 			return buf;

 		// get region to replace
 		if (context != null && ((IndexedRegion) node).getEndOffset() > 0) {
 			if (attr != null && ((IndexedRegion) attr).getEndOffset() > 0) {
 				IStructuredDocumentRegion flatNode = node.getOwnerDocument().getModel().getStructuredDocument().getRegionAtCharacterOffset(((IndexedRegion) attr).getStartOffset());
 				ITextRegion region = flatNode.getRegionAtCharacterOffset(((IndexedRegion) attr).getStartOffset());
 				RegionIterator it = new RegionIterator(flatNode, region);
 				it.prev();
 				if (it.hasPrev()) {
 					ITextRegion prev = it.prev();
 					if (prev.getType() == CSSRegionContexts.CSS_S)
 						context.start = it.getStructuredDocumentRegion().getStartOffset(prev);
 					else
 						context.start = it.getStructuredDocumentRegion().getStartOffset(region);
 				} else
 					context.start = it.getStructuredDocumentRegion().getStartOffset(region);
 				context.end = it.getStructuredDocumentRegion().getEndOffset(region);
 			} else {
 				IStructuredDocumentRegion flatNode = node.getOwnerDocument().getModel().getStructuredDocument().getRegionAtCharacterOffset(((IndexedRegion) node).getEndOffset() - 1);
 				ITextRegion region = flatNode.getRegionAtCharacterOffset(((IndexedRegion) node).getEndOffset() - 1);
 				if (region.getType() == CSSRegionContexts.CSS_S) {
 					context.start = flatNode.getStartOffset(region);
 					context.end = flatNode.getEndOffset(region);
 				} else {
 					context.start = flatNode.getEndOffset();
 					context.end = flatNode.getEndOffset();
 				}
 			}
 		}
 		// generate text
 		if (insert && attr.getValue() != null && attr.getValue().length() > 0) {
 			appendSpaceBefore(node, attr.getValue(), buf);
 			buf.append(attr.getValue());
 		}
 		return buf;
 	}

 	/**
 	 *
 	 */
 	protected void formatBefore(ICSSNode node, ICSSNode child, String toAppend, StringBuffer source, IRegion exceptFor) {
 		ICSSNode prev = (child != null) ? child.getPreviousSibling() : node.getLastChild();
 		int start = (prev != null) ? ((IndexedRegion) prev).getEndOffset() : 0;
 		int end = (child != null) ? ((IndexedRegion) child).getStartOffset() : 0;
 		if (start > 0 && start < end) {
 			CSSCleanupStrategy stgy = getCleanupStrategy(node);

 			IStructuredDocument structuredDocument = node.getOwnerDocument().getModel().getStructuredDocument();
 			// get meaning regions
 			CompoundRegion[] regions = null;
 			if (exceptFor == null)
 				regions = getRegionsWithoutWhiteSpaces(structuredDocument, new FormatRegion(start, end - start), stgy);
 			else {
 				regions = getRegions(structuredDocument, new FormatRegion(start, end - start), exceptFor, null);
 			}
 			// generate source
 			for (int i = 0; i < regions.length; i++) {
 				appendSpaceBefore(node, regions[i], source);
 				source.append(decoratedRegion(regions[i], 2, stgy)); // must
 				// be
 				// comments
 			}
 		}
 		if (child != null && child instanceof ICSSPrimitiveValue) {
 			if (((ICSSPrimitiveValue) child).getPrimitiveType() == ICSSPrimitiveValue.CSS_COMMA)
 				toAppend = ",";//$NON-NLS-1$
 			else if (((ICSSPrimitiveValue) child).getPrimitiveType() == ICSSPrimitiveValue.CSS_SLASH)
 				toAppend = "/";//$NON-NLS-1$
 		}
 		if (child != null && toAppend != null && !toAppend.equals(",") && !toAppend.equals("/")) //$NON-NLS-1$ //$NON-NLS-2$
 			appendSpaceBefore(node, toAppend, source);
 	}

 	/**
 	 *
 	 */
 	protected void formatBefore(ICSSNode node, ICSSNode child, IRegion region, String toAppend, StringBuffer source) {
 		CSSCleanupStrategy stgy = getCleanupStrategy(node);

 		IStructuredDocument structuredDocument = node.getOwnerDocument().getModel().getStructuredDocument();
 		CompoundRegion[] regions = getRegionsWithoutWhiteSpaces(structuredDocument, region, stgy);
 		CompoundRegion[] outside = getOutsideRegions(structuredDocument, region);
 		for (int i = 0; i < regions.length; i++) {
 			if (i != 0 || needS(outside[0]))
 				appendSpaceBefore(node, regions[i], source);
 			source.append(decoratedRegion(regions[i], 2, stgy)); // must be
 			// comments
 		}
 		if (needS(outside[1])) {
 			if (((IndexedRegion) child).getStartOffset() == region.getOffset() + region.getLength()) {
 				if (toAppend != "," && toAppend != "/") //$NON-NLS-1$ //$NON-NLS-2$
 					appendSpaceBefore(node, toAppend, source);
 			}
 		}
 	}

 	/**
 	 *
 	 */
 	protected void formatPost(ICSSNode node, StringBuffer source) {
 		CSSCleanupStrategy stgy = getCleanupStrategy(node);

 		int end = ((IndexedRegion) node).getEndOffset();
 		int start = (node.getLastChild() != null && ((IndexedRegion) node.getLastChild()).getEndOffset() > 0) ? ((IndexedRegion) node.getLastChild()).getEndOffset() : getChildInsertPos(node);
 		if (end > 0 && start < end) { // format source
 			IStructuredDocument structuredDocument = node.getOwnerDocument().getModel().getStructuredDocument();
 			CompoundRegion[] regions = getRegionsWithoutWhiteSpaces(structuredDocument, new FormatRegion(start, end - start), stgy);
 			for (int i = 0; i < regions.length; i++) {
 				appendSpaceBefore(node, regions[i], source);
 				source.append(decoratedIdentRegion(regions[i], stgy));
 			}
 		} else { // generate source
 			// append "!important"
 			String priority = ((ICSSStyleDeclItem) node).getPriority();
 			if (priority != null && priority.length() > 0) {
 				appendSpaceBefore(node, priority, source);
 				source.append(priority);
 			}
 		}
 	}

 	/**
 	 *
 	 */
 	protected void formatPost(ICSSNode node, IRegion region, StringBuffer source) {
 		CSSCleanupStrategy stgy = getCleanupStrategy(node);

 		IStructuredDocument structuredDocument = node.getOwnerDocument().getModel().getStructuredDocument();
 		CompoundRegion[] regions = getRegionsWithoutWhiteSpaces(structuredDocument, region, stgy);
 		CompoundRegion[] outside = getOutsideRegions(structuredDocument, region);
 		for (int i = 0; i < regions.length; i++) {
 			if (i != 0 || needS(outside[0]))
 				appendSpaceBefore(node, regions[i], source);
 			source.append(decoratedIdentRegion(regions[i], stgy));
 		}
 	}

 	/**
 	 *
 	 */
 	protected void formatPre(ICSSNode node, StringBuffer source) {
 		int start = ((IndexedRegion) node).getStartOffset();
 		int end = (node.getFirstChild() != null && ((IndexedRegion) node.getFirstChild()).getEndOffset() > 0) ? ((IndexedRegion) node.getFirstChild()).getStartOffset() : getChildInsertPos(node);
 		Preferences preferences = CSSCorePlugin.getDefault().getPluginPreferences();
 		if (end > 0) { // format source
 			CSSCleanupStrategy stgy = getCleanupStrategy(node);

 			IStructuredDocument structuredDocument = node.getOwnerDocument().getModel().getStructuredDocument();
 			CompoundRegion[] regions = getRegionsWithoutWhiteSpaces(structuredDocument, new FormatRegion(start, end - start), stgy);
 			for (int i = 0; i < regions.length; i++) {
 				if (i != 0)
 					appendSpaceBefore(node, regions[i], source);
 				source.append(decoratedPropNameRegion(regions[i], stgy));
 			}
 		} else { // generatoe source
 			ICSSStyleDeclItem item = (ICSSStyleDeclItem) node;
 			if (preferences.getInt(CSSCorePreferenceNames.CASE_PROPERTY_NAME) == CSSCorePreferenceNames.UPPER)
 				source.append(item.getPropertyName().toUpperCase());
 			else
 				source.append(item.getPropertyName());

 			int k = preferences.getInt(CSSCorePreferenceNames.FORMAT_PROP_PRE_DELIM);
 			if (preferences.getInt(CSSCorePreferenceNames.LINE_WIDTH) > 0 && (!preferences.getBoolean(CSSCorePreferenceNames.WRAPPING_PROHIBIT_WRAP_ON_ATTR) || node.getOwnerDocument().getNodeType() != ICSSNode.STYLEDECLARATION_NODE)) {
 				int length = getLastLineLength(node, source);
 				int append = 1;
 				if (length + k + append > preferences.getInt(CSSCorePreferenceNames.LINE_WIDTH)) {
 					source.append(getLineDelimiter(node));
 					source.append(getIndent(node));
 					source.append(getIndentString());
 					k = 0; // no space is necessary
 				}
 			}
 			// no delimiter case
 			while (k-- > 0)
 				source.append(" ");//$NON-NLS-1$
 			source.append(":");//$NON-NLS-1$
 		}
 		if (!isCleanup() || getCleanupStrategy(node).isFormatSource()) {
 			appendAfterColonSpace(node, source);
 		}
 	}

 	/**
 	 *
 	 */
 	protected void formatPre(ICSSNode node, IRegion region, StringBuffer source) {
 		CSSCleanupStrategy stgy = getCleanupStrategy(node);

 		IStructuredDocument structuredDocument = node.getOwnerDocument().getModel().getStructuredDocument();
 		CompoundRegion[] regions = getRegionsWithoutWhiteSpaces(structuredDocument, region, stgy);
 		CompoundRegion[] outside = getOutsideRegions(structuredDocument, region);
 		for (int i = 0; i < regions.length; i++) {
 			if (i != 0 || needS(outside[0]))
 				appendSpaceBefore(node, regions[i], source);
 			source.append(decoratedPropNameRegion(regions[i], stgy));
 		}
 		if (needS(outside[1])) {
 			if (isIncludesPreEnd(node, region) && (!isCleanup() || getCleanupStrategy(node).isFormatSource())) {
 				appendAfterColonSpace(node, source);
 			} else
 				appendSpaceBefore(node, outside[1], source);
 		}
 	}

 	/**
 	 *
 	 */
 	public StringBuffer formatValue(ICSSNode node) {
 		StringBuffer source = new StringBuffer();
 		formatChildren(node, source);

 		return source;
 	}

 	/**
 	 *
 	 */
 	public int getAttrInsertPos(ICSSNode node, String attrName) {
 		if (node == null || attrName == null || attrName.length() == 0)
 			return -1;

 		if (!ICSSStyleDeclItem.IMPORTANT.equalsIgnoreCase(attrName))
 			return -1;

 		ICSSAttr attr = (ICSSAttr) node.getAttributes().getNamedItem(ICSSStyleDeclItem.IMPORTANT);
 		if (attr != null && ((IndexedRegion) attr).getEndOffset() > 0)
 			return ((IndexedRegion) attr).getStartOffset();
 		IndexedRegion iNode = (IndexedRegion) node;
 		if (iNode.getEndOffset() <= 0)
 			return -1;

 		CompoundRegion regions[] = getRegionsWithoutWhiteSpaces(node.getOwnerDocument().getModel().getStructuredDocument(), new FormatRegion(iNode.getStartOffset(), iNode.getEndOffset() - iNode.getStartOffset()), getCleanupStrategy(node));
 		for (int i = regions.length - 1; i >= 0; i--) {
 			if (regions[i].getType() == CSSRegionContexts.CSS_DECLARATION_VALUE_IMPORTANT)
 				return regions[i].getStartOffset();
 		}
 		return iNode.getEndOffset();
 	}

 	/**
 	 *
 	 */
 	public int getChildInsertPos(ICSSNode node) {
 		int n = ((IndexedRegion) node).getEndOffset();
 		if (n < 0) {
 			return -1;
 		}
 		IStructuredDocumentRegion flatNode = node.getOwnerDocument().getModel().getStructuredDocument().getRegionAtCharacterOffset(n - 1);
 		if (flatNode != null && flatNode.getType() == CSSRegionContexts.CSS_DECLARATION_DELIMITER) {
 			n -= flatNode.getLength();
 		}
 		if (n > 0) {
 			String important = ((ICSSStyleDeclItem) node).getPriority();
 			if (important != null && important.length() > 0) {
 				// find before "!important" position
 				flatNode = node.getOwnerDocument().getModel().getStructuredDocument().getRegionAtCharacterOffset(n - 1);
 				RegionIterator it = new RegionIterator(flatNode, flatNode.getRegionAtCharacterOffset(n - 1));
 				while (it.hasPrev()) {
 					ITextRegion region = it.prev();
 					if (it.getStructuredDocumentRegion() != flatNode)
 						break;
 					if (region.getType() == CSSRegionContexts.CSS_DECLARATION_VALUE_IMPORTANT)
 						return it.getStructuredDocumentRegion().getStartOffset(region);
 				}
 			}
 			// skip last space
 			flatNode = node.getOwnerDocument().getModel().getStructuredDocument().getRegionAtCharacterOffset(n - 1);
 			ITextRegion region = flatNode.getRegionAtCharacterOffset(n - 1);
 			if (region != null) {
 				n -= region.getLength() - region.getTextLength();
 			}

 			return n;
 		}
 		return -1;
 	}

 	/**
 	 *
 	 */
 	public synchronized static StyleDeclItemFormatter getInstance() {
 		if (instance == null)
 			instance = new StyleDeclItemFormatter();
 		return instance;
 	}

 	private String getIndentString() {
 		StringBuffer indent = new StringBuffer();

 		Preferences preferences = CSSCorePlugin.getDefault().getPluginPreferences();
 		if (preferences != null) {
 			char indentChar = ' ';
 			String indentCharPref = preferences.getString(CSSCorePreferenceNames.INDENTATION_CHAR);
 			if (CSSCorePreferenceNames.TAB.equals(indentCharPref)) {
 				indentChar = '\t';
 			}
 			int indentationWidth = preferences.getInt(CSSCorePreferenceNames.INDENTATION_SIZE);

 			for (int i = 0; i < indentationWidth; i++) {
 				indent.append(indentChar);
 			}
 		}
 		return indent.toString();
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2004, 2005 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.wst.css.core.internal.formatter;



	import org.eclipse.core.runtime.Preferences;
	import org.eclipse.jface.text.IRegion;
	import org.eclipse.wst.css.core.internal.CSSCorePlugin;
	import org.eclipse.wst.css.core.internal.cleanup.CSSCleanupStrategy;
	import org.eclipse.wst.css.core.internal.parserz.CSSRegionContexts;
	import org.eclipse.wst.css.core.internal.preferences.CSSCorePreferenceNames;
	import org.eclipse.wst.css.core.internal.provisional.document.ICSSAttr;
	import org.eclipse.wst.css.core.internal.provisional.document.ICSSNode;
	import org.eclipse.wst.css.core.internal.provisional.document.ICSSPrimitiveValue;
	import org.eclipse.wst.css.core.internal.provisional.document.ICSSStyleDeclItem;
	import org.eclipse.wst.css.core.internal.util.RegionIterator;
	import org.eclipse.wst.sse.core.internal.provisional.IndexedRegion;
	import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument;
	import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion;
	import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegion;


	/**
	*
	*/
	public class StyleDeclItemFormatter extends DefaultCSSSourceFormatter {

	private static StyleDeclItemFormatter instance;

	/**
	*
	*/
	StyleDeclItemFormatter() {
	super();
	}

	/**
	*
	*/
	private void appendAfterColonSpace(ICSSNode node, StringBuffer source) {
	Preferences preferences = CSSCorePlugin.getDefault().getPluginPreferences();
	int n = preferences.getInt(CSSCorePreferenceNames.FORMAT_PROP_POST_DELIM);

	if (preferences.getInt(CSSCorePreferenceNames.LINE_WIDTH) > 0 && (!preferences.getBoolean(CSSCorePreferenceNames.WRAPPING_PROHIBIT_WRAP_ON_ATTR) \|\| node.getOwnerDocument().getNodeType() != ICSSNode.STYLEDECLARATION_NODE)) {
	int length = getLastLineLength(node, source);
	int append = getFirstChildRegionLength(node);
	if (length + n + append > preferences.getInt(CSSCorePreferenceNames.LINE_WIDTH)) {
	source.append(getLineDelimiter(node));
	source.append(getIndent(node));
	source.append(getIndentString());
	n = 0; // no space is necessary
	}
	}
	// no delimiter case
	while (n-- > 0)
	source.append(" ");//$NON-NLS-1$
	}

	/**
	*
	*/
	private int getFirstChildRegionLength(ICSSNode node) {
	ICSSNode firstChild = node.getFirstChild();
	if (firstChild == null)
	return 1;
	int start = ((IndexedRegion) firstChild).getStartOffset();
	RegionIterator itr = new RegionIterator(node.getOwnerDocument().getModel().getStructuredDocument(), start);
	while (itr.hasNext()) {
	ITextRegion reg = itr.next();
	if (reg != null && reg.getType() != CSSRegionContexts.CSS_S)
	return reg.getTextLength();
	}
	return 1;
	}

	/**
	*
	*/
	public StringBuffer formatAttrChanged(ICSSNode node, ICSSAttr attr, boolean insert, AttrChangeContext context) {
	StringBuffer buf = new StringBuffer();
	if (node == null \|\| attr == null)
	return buf;

	if (!ICSSStyleDeclItem.IMPORTANT.equalsIgnoreCase(attr.getName()))
	return buf;

	// get region to replace
	if (context != null && ((IndexedRegion) node).getEndOffset() > 0) {
	if (attr != null && ((IndexedRegion) attr).getEndOffset() > 0) {
	IStructuredDocumentRegion flatNode = node.getOwnerDocument().getModel().getStructuredDocument().getRegionAtCharacterOffset(((IndexedRegion) attr).getStartOffset());
	ITextRegion region = flatNode.getRegionAtCharacterOffset(((IndexedRegion) attr).getStartOffset());
	RegionIterator it = new RegionIterator(flatNode, region);
	it.prev();
	if (it.hasPrev()) {
	ITextRegion prev = it.prev();
	if (prev.getType() == CSSRegionContexts.CSS_S)
	context.start = it.getStructuredDocumentRegion().getStartOffset(prev);
	else
	context.start = it.getStructuredDocumentRegion().getStartOffset(region);
	} else
	context.start = it.getStructuredDocumentRegion().getStartOffset(region);
	context.end = it.getStructuredDocumentRegion().getEndOffset(region);
	} else {
	IStructuredDocumentRegion flatNode = node.getOwnerDocument().getModel().getStructuredDocument().getRegionAtCharacterOffset(((IndexedRegion) node).getEndOffset() - 1);
	ITextRegion region = flatNode.getRegionAtCharacterOffset(((IndexedRegion) node).getEndOffset() - 1);
	if (region.getType() == CSSRegionContexts.CSS_S) {
	context.start = flatNode.getStartOffset(region);
	context.end = flatNode.getEndOffset(region);
	} else {
	context.start = flatNode.getEndOffset();
	context.end = flatNode.getEndOffset();
	}
	}
	}
	// generate text
	if (insert && attr.getValue() != null && attr.getValue().length() > 0) {
	appendSpaceBefore(node, attr.getValue(), buf);
	buf.append(attr.getValue());
	}
	return buf;
	}

	/**
	*
	*/
	protected void formatBefore(ICSSNode node, ICSSNode child, String toAppend, StringBuffer source, IRegion exceptFor) {
	ICSSNode prev = (child != null) ? child.getPreviousSibling() : node.getLastChild();
	int start = (prev != null) ? ((IndexedRegion) prev).getEndOffset() : 0;
	int end = (child != null) ? ((IndexedRegion) child).getStartOffset() : 0;
	if (start > 0 && start < end) {
	CSSCleanupStrategy stgy = getCleanupStrategy(node);

	IStructuredDocument structuredDocument = node.getOwnerDocument().getModel().getStructuredDocument();
	// get meaning regions
	CompoundRegion[] regions = null;
	if (exceptFor == null)
	regions = getRegionsWithoutWhiteSpaces(structuredDocument, new FormatRegion(start, end - start), stgy);
	else {
	regions = getRegions(structuredDocument, new FormatRegion(start, end - start), exceptFor, null);
	}
	// generate source
	for (int i = 0; i < regions.length; i++) {
	appendSpaceBefore(node, regions[i], source);
	source.append(decoratedRegion(regions[i], 2, stgy)); // must
	// be
	// comments
	}
	}
	if (child != null && child instanceof ICSSPrimitiveValue) {
	if (((ICSSPrimitiveValue) child).getPrimitiveType() == ICSSPrimitiveValue.CSS_COMMA)
	toAppend = ",";//$NON-NLS-1$
	else if (((ICSSPrimitiveValue) child).getPrimitiveType() == ICSSPrimitiveValue.CSS_SLASH)
	toAppend = "/";//$NON-NLS-1$
	}
	if (child != null && toAppend != null && !toAppend.equals(",") && !toAppend.equals("/")) //$NON-NLS-1$ //$NON-NLS-2$
	appendSpaceBefore(node, toAppend, source);
	}

	/**
	*
	*/
	protected void formatBefore(ICSSNode node, ICSSNode child, IRegion region, String toAppend, StringBuffer source) {
	CSSCleanupStrategy stgy = getCleanupStrategy(node);

	IStructuredDocument structuredDocument = node.getOwnerDocument().getModel().getStructuredDocument();
	CompoundRegion[] regions = getRegionsWithoutWhiteSpaces(structuredDocument, region, stgy);
	CompoundRegion[] outside = getOutsideRegions(structuredDocument, region);
	for (int i = 0; i < regions.length; i++) {
	if (i != 0 \|\| needS(outside[0]))
	appendSpaceBefore(node, regions[i], source);
	source.append(decoratedRegion(regions[i], 2, stgy)); // must be
	// comments
	}
	if (needS(outside[1])) {
	if (((IndexedRegion) child).getStartOffset() == region.getOffset() + region.getLength()) {
	if (toAppend != "," && toAppend != "/") //$NON-NLS-1$ //$NON-NLS-2$
	appendSpaceBefore(node, toAppend, source);
	}
	}
	}

	/**
	*
	*/
	protected void formatPost(ICSSNode node, StringBuffer source) {
	CSSCleanupStrategy stgy = getCleanupStrategy(node);

	int end = ((IndexedRegion) node).getEndOffset();
	int start = (node.getLastChild() != null && ((IndexedRegion) node.getLastChild()).getEndOffset() > 0) ? ((IndexedRegion) node.getLastChild()).getEndOffset() : getChildInsertPos(node);
	if (end > 0 && start < end) { // format source
	IStructuredDocument structuredDocument = node.getOwnerDocument().getModel().getStructuredDocument();
	CompoundRegion[] regions = getRegionsWithoutWhiteSpaces(structuredDocument, new FormatRegion(start, end - start), stgy);
	for (int i = 0; i < regions.length; i++) {
	appendSpaceBefore(node, regions[i], source);
	source.append(decoratedIdentRegion(regions[i], stgy));
	}
	} else { // generate source
	// append "!important"
	String priority = ((ICSSStyleDeclItem) node).getPriority();
	if (priority != null && priority.length() > 0) {
	appendSpaceBefore(node, priority, source);
	source.append(priority);
	}
	}
	}

	/**
	*
	*/
	protected void formatPost(ICSSNode node, IRegion region, StringBuffer source) {
	CSSCleanupStrategy stgy = getCleanupStrategy(node);

	IStructuredDocument structuredDocument = node.getOwnerDocument().getModel().getStructuredDocument();
	CompoundRegion[] regions = getRegionsWithoutWhiteSpaces(structuredDocument, region, stgy);
	CompoundRegion[] outside = getOutsideRegions(structuredDocument, region);
	for (int i = 0; i < regions.length; i++) {
	if (i != 0 \|\| needS(outside[0]))
	appendSpaceBefore(node, regions[i], source);
	source.append(decoratedIdentRegion(regions[i], stgy));
	}
	}

	/**
	*
	*/
	protected void formatPre(ICSSNode node, StringBuffer source) {
	int start = ((IndexedRegion) node).getStartOffset();
	int end = (node.getFirstChild() != null && ((IndexedRegion) node.getFirstChild()).getEndOffset() > 0) ? ((IndexedRegion) node.getFirstChild()).getStartOffset() : getChildInsertPos(node);
	Preferences preferences = CSSCorePlugin.getDefault().getPluginPreferences();
	if (end > 0) { // format source
	CSSCleanupStrategy stgy = getCleanupStrategy(node);

	IStructuredDocument structuredDocument = node.getOwnerDocument().getModel().getStructuredDocument();
	CompoundRegion[] regions = getRegionsWithoutWhiteSpaces(structuredDocument, new FormatRegion(start, end - start), stgy);
	for (int i = 0; i < regions.length; i++) {
	if (i != 0)
	appendSpaceBefore(node, regions[i], source);
	source.append(decoratedPropNameRegion(regions[i], stgy));
	}
	} else { // generatoe source
	ICSSStyleDeclItem item = (ICSSStyleDeclItem) node;
	if (preferences.getInt(CSSCorePreferenceNames.CASE_PROPERTY_NAME) == CSSCorePreferenceNames.UPPER)
	source.append(item.getPropertyName().toUpperCase());
	else
	source.append(item.getPropertyName());

	int k = preferences.getInt(CSSCorePreferenceNames.FORMAT_PROP_PRE_DELIM);
	if (preferences.getInt(CSSCorePreferenceNames.LINE_WIDTH) > 0 && (!preferences.getBoolean(CSSCorePreferenceNames.WRAPPING_PROHIBIT_WRAP_ON_ATTR) \|\| node.getOwnerDocument().getNodeType() != ICSSNode.STYLEDECLARATION_NODE)) {
	int length = getLastLineLength(node, source);
	int append = 1;
	if (length + k + append > preferences.getInt(CSSCorePreferenceNames.LINE_WIDTH)) {
	source.append(getLineDelimiter(node));
	source.append(getIndent(node));
	source.append(getIndentString());
	k = 0; // no space is necessary
	}
	}
	// no delimiter case
	while (k-- > 0)
	source.append(" ");//$NON-NLS-1$
	source.append(":");//$NON-NLS-1$
	}
	if (!isCleanup() \|\| getCleanupStrategy(node).isFormatSource()) {
	appendAfterColonSpace(node, source);
	}
	}

	/**
	*
	*/
	protected void formatPre(ICSSNode node, IRegion region, StringBuffer source) {
	CSSCleanupStrategy stgy = getCleanupStrategy(node);

	IStructuredDocument structuredDocument = node.getOwnerDocument().getModel().getStructuredDocument();
	CompoundRegion[] regions = getRegionsWithoutWhiteSpaces(structuredDocument, region, stgy);
	CompoundRegion[] outside = getOutsideRegions(structuredDocument, region);
	for (int i = 0; i < regions.length; i++) {
	if (i != 0 \|\| needS(outside[0]))
	appendSpaceBefore(node, regions[i], source);
	source.append(decoratedPropNameRegion(regions[i], stgy));
	}
	if (needS(outside[1])) {
	if (isIncludesPreEnd(node, region) && (!isCleanup() \|\| getCleanupStrategy(node).isFormatSource())) {
	appendAfterColonSpace(node, source);
	} else
	appendSpaceBefore(node, outside[1], source);
	}
	}

	/**
	*
	*/
	public StringBuffer formatValue(ICSSNode node) {
	StringBuffer source = new StringBuffer();
	formatChildren(node, source);

	return source;
	}

	/**
	*
	*/
	public int getAttrInsertPos(ICSSNode node, String attrName) {
	if (node == null \|\| attrName == null \|\| attrName.length() == 0)
	return -1;

	if (!ICSSStyleDeclItem.IMPORTANT.equalsIgnoreCase(attrName))
	return -1;

	ICSSAttr attr = (ICSSAttr) node.getAttributes().getNamedItem(ICSSStyleDeclItem.IMPORTANT);
	if (attr != null && ((IndexedRegion) attr).getEndOffset() > 0)
	return ((IndexedRegion) attr).getStartOffset();
	IndexedRegion iNode = (IndexedRegion) node;
	if (iNode.getEndOffset() <= 0)
	return -1;

	CompoundRegion regions[] = getRegionsWithoutWhiteSpaces(node.getOwnerDocument().getModel().getStructuredDocument(), new FormatRegion(iNode.getStartOffset(), iNode.getEndOffset() - iNode.getStartOffset()), getCleanupStrategy(node));
	for (int i = regions.length - 1; i >= 0; i--) {
	if (regions[i].getType() == CSSRegionContexts.CSS_DECLARATION_VALUE_IMPORTANT)
	return regions[i].getStartOffset();
	}
	return iNode.getEndOffset();
	}

	/**
	*
	*/
	public int getChildInsertPos(ICSSNode node) {
	int n = ((IndexedRegion) node).getEndOffset();
	if (n < 0) {
	return -1;
	}
	IStructuredDocumentRegion flatNode = node.getOwnerDocument().getModel().getStructuredDocument().getRegionAtCharacterOffset(n - 1);
	if (flatNode != null && flatNode.getType() == CSSRegionContexts.CSS_DECLARATION_DELIMITER) {
	n -= flatNode.getLength();
	}
	if (n > 0) {
	String important = ((ICSSStyleDeclItem) node).getPriority();
	if (important != null && important.length() > 0) {
	// find before "!important" position
	flatNode = node.getOwnerDocument().getModel().getStructuredDocument().getRegionAtCharacterOffset(n - 1);
	RegionIterator it = new RegionIterator(flatNode, flatNode.getRegionAtCharacterOffset(n - 1));
	while (it.hasPrev()) {
	ITextRegion region = it.prev();
	if (it.getStructuredDocumentRegion() != flatNode)
	break;
	if (region.getType() == CSSRegionContexts.CSS_DECLARATION_VALUE_IMPORTANT)
	return it.getStructuredDocumentRegion().getStartOffset(region);
	}
	}
	// skip last space
	flatNode = node.getOwnerDocument().getModel().getStructuredDocument().getRegionAtCharacterOffset(n - 1);
	ITextRegion region = flatNode.getRegionAtCharacterOffset(n - 1);
	if (region != null) {
	n -= region.getLength() - region.getTextLength();
	}

	return n;
	}
	return -1;
	}

	/**
	*
	*/
	public synchronized static StyleDeclItemFormatter getInstance() {
	if (instance == null)
	instance = new StyleDeclItemFormatter();
	return instance;
	}

	private String getIndentString() {
	StringBuffer indent = new StringBuffer();

	Preferences preferences = CSSCorePlugin.getDefault().getPluginPreferences();
	if (preferences != null) {
	char indentChar = ' ';
	String indentCharPref = preferences.getString(CSSCorePreferenceNames.INDENTATION_CHAR);
	if (CSSCorePreferenceNames.TAB.equals(indentCharPref)) {
	indentChar = '\t';
	}
	int indentationWidth = preferences.getInt(CSSCorePreferenceNames.INDENTATION_SIZE);

	for (int i = 0; i < indentationWidth; i++) {
	indent.append(indentChar);
	}
	}
	return indent.toString();
	}
	}