| /******************************************************************************* |
| * Copyright (c) 2004 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; |
| } |
| } |