| /******************************************************************************* |
| * 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; |
| } |
| } |