/*******************************************************************************
* 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.ICSSImportRule;
import org.eclipse.wst.css.core.internal.provisional.document.ICSSNode;
import org.eclipse.wst.css.core.internal.util.CSSUtil;
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 ImportRuleFormatter extends AbstractCSSSourceFormatter {
public final static java.lang.String IMPORT = "@import";//$NON-NLS-1$
private static ImportRuleFormatter instance;
/**
*
*/
ImportRuleFormatter() {
super();
}
/**
*
*/
public StringBuffer formatAttrChanged(ICSSNode node, ICSSAttr attr, boolean insert, AttrChangeContext context) {
StringBuffer buf = new StringBuffer();
if (node == null || attr == null)
return buf;
if (!ICSSImportRule.HREF.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);
it.next();
} else
context.start = it.getStructuredDocumentRegion().getStartOffset(region);
it.next();
it.next();
if (it.hasNext()) {
ITextRegion next = it.next();
if (next.getType() == CSSRegionContexts.CSS_S)
context.end = it.getStructuredDocumentRegion().getEndOffset(next);
else
context.end = it.getStructuredDocumentRegion().getEndOffset(region);
} else
context.end = it.getStructuredDocumentRegion().getEndOffset(region);
} else {
ICSSNode child = node.getFirstChild();
IStructuredDocumentRegion flatNode = null;
ITextRegion region = null;
if (child == null) {
flatNode = node.getOwnerDocument().getModel().getStructuredDocument().getRegionAtCharacterOffset(((IndexedRegion) node).getEndOffset() - 1);
region = flatNode.getRegionAtCharacterOffset(((IndexedRegion) node).getEndOffset() - 1);
} else {
flatNode = node.getOwnerDocument().getModel().getStructuredDocument().getRegionAtCharacterOffset(((IndexedRegion) child).getStartOffset() - 1);
region = flatNode.getRegionAtCharacterOffset(((IndexedRegion) child).getStartOffset() - 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());
appendSpaceBefore(node, "", buf);//$NON-NLS-1$
}
return buf;
}
/**
*
*/
protected void formatBefore(ICSSNode node, ICSSNode child, String toAppend, StringBuffer source, IRegion exceptFor) {
// for media-type
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) { // format source
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 {
String pickupType = CSSRegionContexts.CSS_MEDIA_SEPARATOR;
if (prev == null || child == null)
pickupType = null;
regions = getRegions(structuredDocument, new FormatRegion(start, end - start), exceptFor, pickupType);
}
// extract source
for (int i = 0; i < regions.length; i++) {
appendSpaceBefore(node, regions[i], source);
source.append(decoratedRegion(regions[i], 0, stgy)); // must
// be
// comments
}
appendSpaceBefore(node, toAppend, source);
} else if (prev != null && child != null) { // generate source : ????
source.append(",");//$NON-NLS-1$
appendSpaceBefore(node, toAppend, source);
} else if (child != null) { // generate source : between 'url()' and
// media types
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], 0, stgy)); // must be
// comments
}
if (needS(outside[1])) {
if (((IndexedRegion) child).getStartOffset() == region.getOffset() + region.getLength())
appendSpaceBefore(node, toAppend, source);
else
appendSpaceBefore(node, outside[1], 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) {
IStructuredDocument structuredDocument = node.getOwnerDocument().getModel().getStructuredDocument();
CompoundRegion[] regions = getRegionsWithoutWhiteSpaces(structuredDocument, new FormatRegion(start, end - start), stgy);
for (int i = 0; i < regions.length; i++) {
appendDelimBefore(node, regions[i], source);
source.append(decoratedRegion(regions[i], 0, stgy));
}
} else {
source.append(";"); //$NON-NLS-1$
}
}
/**
*
*/
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])) && !regions[i].getType().equals(CSSRegionContexts.CSS_DELIMITER))
appendDelimBefore(node, regions[i], source);
source.append(decoratedRegion(regions[i], 0, 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);
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++) {
String str = regions[i].getText();
if (regions[i].getType() == CSSRegionContexts.CSS_IMPORT)
str = decoratedIdentRegion(regions[i], stgy);
else
str = decoratedPropValueRegion(regions[i], stgy);
if (i != 0)
appendSpaceBefore(node, regions[i], source);
source.append(str);
}
} else { // generate source
Preferences preferences = CSSCorePlugin.getDefault().getPluginPreferences();
String str = IMPORT;
if (preferences.getInt(CSSCorePreferenceNames.CASE_IDENTIFIER) == CSSCorePreferenceNames.UPPER)
str = IMPORT.toUpperCase();
String quote = preferences.getString(CSSCorePreferenceNames.FORMAT_QUOTE);
source.append(str);
str = "url(";//$NON-NLS-1$
if (preferences.getInt(CSSCorePreferenceNames.CASE_PROPERTY_VALUE) == CSSCorePreferenceNames.UPPER)
str = str.toUpperCase();
String href = ((ICSSImportRule) node).getHref();
quote = CSSUtil.detectQuote(href, quote);
str = str + quote + href + quote + ")";//$NON-NLS-1$
appendSpaceBefore(node, str, source);
source.append(str);
}
ICSSNode child = node.getFirstChild();
if (child != null && (child instanceof org.w3c.dom.stylesheets.MediaList) && ((org.w3c.dom.stylesheets.MediaList) child).getLength() > 0) {
appendSpaceBefore(node, "", source);//$NON-NLS-1$
}
}
/**
*
*/
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++) {
String str = regions[i].getText();
if (regions[i].getType() == CSSRegionContexts.CSS_IMPORT)
str = decoratedIdentRegion(regions[i], stgy);
else
str = decoratedPropValueRegion(regions[i], stgy);
if (i != 0 || needS(outside[0]))
appendSpaceBefore(node, regions[i], source);
source.append(str);
}
if (needS(outside[1]) && !isIncludesPreEnd(node, region))
appendSpaceBefore(node, outside[1], source);
}
/**
*
*/
public int getAttrInsertPos(ICSSNode node, String attrName) {
if (node == null || attrName == null || attrName.length() == 0)
return -1;
if (!ICSSImportRule.HREF.equalsIgnoreCase(attrName))
return -1;
ICSSAttr attr = (ICSSAttr) node.getAttributes().getNamedItem(ICSSImportRule.HREF);
if (attr != null && ((IndexedRegion) attr).getEndOffset() > 0)
return ((IndexedRegion) attr).getStartOffset();
IndexedRegion iNode = (IndexedRegion) node;
if (iNode.getEndOffset() <= 0)
return -1;
FormatRegion formatRegion = null;
ICSSNode child = node.getFirstChild();
if (child != null && ((IndexedRegion) child).getEndOffset() > 0)
formatRegion = new FormatRegion(iNode.getStartOffset(), ((IndexedRegion) child).getStartOffset() - iNode.getStartOffset());
else
formatRegion = new FormatRegion(iNode.getStartOffset(), iNode.getEndOffset() - iNode.getStartOffset());
CompoundRegion regions[] = getRegionsWithoutWhiteSpaces(node.getOwnerDocument().getModel().getStructuredDocument(), formatRegion, getCleanupStrategy(node));
boolean atrule = false;
for (int i = 0; i < regions.length; i++) {
if (regions[i].getType() == CSSRegionContexts.CSS_IMPORT) {
atrule = true;
continue;
} else if (!atrule)
continue;
if (regions[i].getType() != CSSRegionContexts.CSS_COMMENT)
return regions[i].getStartOffset();
}
return (child != null && ((IndexedRegion) child).getEndOffset() > 0) ? ((IndexedRegion) child).getStartOffset() : iNode.getEndOffset();
}
/**
*
*/
public int getChildInsertPos(ICSSNode node) {
int n = ((IndexedRegion) node).getEndOffset();
if (n > 0) {
IStructuredDocumentRegion flatNode = node.getOwnerDocument().getModel().getStructuredDocument().getRegionAtCharacterOffset(n - 1);
if (flatNode.getRegionAtCharacterOffset(n - 1).getType() == CSSRegionContexts.CSS_DELIMITER)
return n - 1;
return n;
}
return -1;
}
/**
*
*/
public synchronized static ImportRuleFormatter getInstance() {
if (instance == null)
instance = new ImportRuleFormatter();
return instance;
}
}