| /******************************************************************************* |
| * 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.ICSSCharsetRule; |
| 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 CharsetRuleFormatter extends DefaultCSSSourceFormatter { |
| |
| public final static java.lang.String CHARSET = "@charset";//$NON-NLS-1$ |
| private static CharsetRuleFormatter instance; |
| |
| /** |
| * |
| */ |
| CharsetRuleFormatter() { |
| super(); |
| } |
| |
| /** |
| * |
| */ |
| public StringBuffer formatAttrChanged(ICSSNode node, ICSSAttr attr, boolean insert, AttrChangeContext context) { |
| StringBuffer buf = new StringBuffer(); |
| if (node == null || attr == null) |
| return buf; |
| |
| if (!ICSSCharsetRule.ENCODING.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.getStartOffset(region); |
| } else { |
| context.start = flatNode.getEndOffset() + 1; |
| context.end = flatNode.getEndOffset(); |
| } |
| } |
| } |
| // generate text |
| if (insert) { |
| appendSpaceBefore(node, attr.getValue(), buf); |
| buf.append(attr.getValue()); |
| } |
| return buf; |
| } |
| |
| /** |
| * |
| */ |
| protected void formatPre(ICSSNode node, StringBuffer source) { |
| int end = ((IndexedRegion) node).getEndOffset(); |
| if (end > 0) { // format source |
| int start = ((IndexedRegion) node).getStartOffset(); |
| formatPre(node, new FormatRegion(start, end - start), source); |
| } else { // generate source |
| Preferences preferences = CSSCorePlugin.getDefault().getPluginPreferences(); |
| |
| String quote = preferences.getString(CSSCorePreferenceNames.FORMAT_QUOTE); |
| String str = CHARSET; |
| if (preferences.getInt(CSSCorePreferenceNames.CASE_IDENTIFIER) == CSSCorePreferenceNames.UPPER) |
| str = CHARSET.toUpperCase(); |
| source.append(str); |
| String enc = ((ICSSCharsetRule) node).getEncoding(); |
| quote = CSSUtil.detectQuote(enc, quote); |
| str = quote + ((enc != null) ? enc : "") + quote + ";";//$NON-NLS-1$ //$NON-NLS-2$ |
| appendSpaceBefore(node, str, source); |
| source.append(str); |
| } |
| } |
| |
| /** |
| * |
| */ |
| protected void formatPre(ICSSNode node, IRegion region, StringBuffer source) { |
| IStructuredDocument structuredDocument = node.getOwnerDocument().getModel().getStructuredDocument(); |
| CSSCleanupStrategy stgy = getCleanupStrategy(node); |
| |
| 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)) |
| 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; |
| CSSCleanupStrategy stgy = getCleanupStrategy(node); |
| |
| if (!ICSSCharsetRule.ENCODING.equalsIgnoreCase(attrName)) |
| return -1; |
| |
| ICSSAttr attr = (ICSSAttr) node.getAttributes().getNamedItem(ICSSCharsetRule.ENCODING); |
| 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()), stgy); |
| for (int i = regions.length - 1; i >= 0; i--) { |
| if (regions[i].getType() != CSSRegionContexts.CSS_COMMENT) |
| return regions[i].getStartOffset(); |
| } |
| return 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 CharsetRuleFormatter getInstance() { |
| if (instance == null) |
| instance = new CharsetRuleFormatter(); |
| return instance; |
| } |
| } |