/*******************************************************************************
* 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.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.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;
import org.w3c.dom.stylesheets.MediaList;
/**
*
*/
public class MediaListFormatter extends DefaultCSSSourceFormatter {
private static MediaListFormatter instance;
/**
*
*/
MediaListFormatter() {
super();
}
/**
*
*/
public StringBuffer formatAttrChanged(ICSSNode node, ICSSAttr attr, boolean insert, AttrChangeContext context) {
StringBuffer buf = new StringBuffer();
if (node == null || attr == null)
return buf;
boolean first = false, last = false;
// 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();
context.start = it.getStructuredDocumentRegion().getStartOffset(region);
while (it.hasPrev()) {
ITextRegion prev = it.prev();
if (prev.getType() == CSSRegionContexts.CSS_S || prev.getType() == CSSRegionContexts.CSS_MEDIA_SEPARATOR || prev.getType() == CSSRegionContexts.CSS_COMMENT)
context.start = it.getStructuredDocumentRegion().getStartOffset(prev);
else
break;
}
if (context.start < ((IndexedRegion) node).getStartOffset()) {
context.start = ((IndexedRegion) node).getStartOffset();
first = true;
}
it.reset(flatNode, region);
context.end = it.getStructuredDocumentRegion().getEndOffset(region);
while (it.hasNext()) {
ITextRegion next = it.next();
if (next.getType() == CSSRegionContexts.CSS_S || next.getType() == CSSRegionContexts.CSS_MEDIA_SEPARATOR || next.getType() == CSSRegionContexts.CSS_COMMENT)
context.end = it.getStructuredDocumentRegion().getEndOffset(next);
else
break;
}
if (((IndexedRegion) node).getEndOffset() < context.end) {
context.end = ((IndexedRegion) node).getEndOffset();
last = true;
}
} else {
last = true;
IStructuredDocumentRegion flatNode = node.getOwnerDocument().getModel().getStructuredDocument().getRegionAtCharacterOffset(((IndexedRegion) node).getEndOffset() - 1);
ITextRegion region = flatNode.getRegionAtCharacterOffset(((IndexedRegion) node).getEndOffset() - 1);
RegionIterator it = new RegionIterator(flatNode, region);
context.start = it.getStructuredDocumentRegion().getEndOffset(region);
context.end = it.getStructuredDocumentRegion().getEndOffset(region);
while (it.hasPrev()) {
ITextRegion prev = it.prev();
if (prev.getType() == CSSRegionContexts.CSS_S || prev.getType() == CSSRegionContexts.CSS_MEDIA_SEPARATOR || prev.getType() == CSSRegionContexts.CSS_COMMENT)
context.start = it.getStructuredDocumentRegion().getStartOffset(prev);
else
break;
}
if (context.start < ((IndexedRegion) node).getStartOffset()) {
context.start = ((IndexedRegion) node).getStartOffset();
first = true;
}
}
}
// generate text
if (insert && attr.getValue() != null && attr.getValue().length() > 0) {
if (!first)
buf.append(","); //$NON-NLS-1$
appendSpaceBefore(node, attr.getValue(), buf);
buf.append(attr.getValue());
if (!last) {
buf.append(","); //$NON-NLS-1$
appendSpaceBefore(node, "", buf); //$NON-NLS-1$
}
} else if (!first && !last) {
buf.append(","); //$NON-NLS-1$
appendSpaceBefore(node, "", buf); //$NON-NLS-1$
}
return buf;
}
/**
*
*/
protected void formatPre(ICSSNode node, StringBuffer source) {
CSSCleanupStrategy stgy = getCleanupStrategy(node);
int start = ((IndexedRegion) node).getStartOffset();
int end = ((IndexedRegion) node).getEndOffset();
if (end > 0) { // 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++) {
if (i != 0)
appendSpaceBefore(node, regions[i], source);
source.append(decoratedIdentRegion(regions[i], stgy));
}
} else { // generate source
MediaList list = (MediaList) node;
int n = list.getLength();
for (int i = 0; i < n; i++) {
String medium = list.item(i);
if (CSSCorePlugin.getDefault().getPluginPreferences().getInt(CSSCorePreferenceNames.CASE_IDENTIFIER) == CSSCorePreferenceNames.UPPER)
medium = medium.toUpperCase();
else
medium = medium.toLowerCase();
if (i != 0) {
source.append(","); //$NON-NLS-1$
appendSpaceBefore(node, medium, source);
}
source.append(medium);
}
}
}
/**
*
*/
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(decoratedIdentRegion(regions[i], stgy));
}
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;
ICSSAttr attr = (ICSSAttr) node.getAttributes().getNamedItem(attrName);
if (attr != null && ((IndexedRegion) attr).getEndOffset() > 0)
return ((IndexedRegion) attr).getStartOffset();
IndexedRegion iNode = (IndexedRegion) node;
if (iNode.getEndOffset() <= 0)
return -1;
/*
* ITextRegion regions[] =
* getRegionsWithoutWhiteSpaces(node.getOwnerDocument().getModel().getStructuredDocument(),
* new FormatRegion(iNode.getStartOffset(), iNode.getEndOffset() -
* iNode.getStartOffset() + 1)); for(int i=regions.length - 1; i >= 0;
* i--) { if (regions[i].getType() == CSSRegionContexts.IMPORTANT_SYM)
* return regions[i].getStartOffset(); }
*/
return iNode.getEndOffset();
}
/**
*
*/
public synchronized static MediaListFormatter getInstance() {
if (instance == null)
instance = new MediaListFormatter();
return instance;
}
}