| /******************************************************************************* |
| * 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.cleanup.CSSCleanupStrategy; |
| import org.eclipse.wst.css.core.internal.parserz.CSSRegionContexts; |
| import org.eclipse.wst.css.core.internal.provisional.document.ICSSModel; |
| 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; |
| |
| |
| /** |
| * |
| */ |
| public class StyleSheetFormatter extends AbstractCSSSourceFormatter { |
| |
| private static StyleSheetFormatter instance; |
| |
| /** |
| * |
| */ |
| StyleSheetFormatter() { |
| super(); |
| } |
| |
| /** |
| * |
| */ |
| protected void formatBefore(ICSSNode node, ICSSNode child, String toAppend, StringBuffer source, IRegion exceptFor) { |
| String delim = getLineDelimiter(node); |
| ICSSNode prev = (child != null) ? child.getPreviousSibling() : node.getLastChild(); |
| if (prev == null && child == null) |
| return; |
| int start = (prev != null) ? ((IndexedRegion) prev).getEndOffset() : 0; |
| int end = (child != null) ? ((IndexedRegion) child).getStartOffset() : 0; |
| if (start > 0 && start < end) { |
| 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_DELIMITER; |
| if (prev == null) |
| pickupType = null; |
| regions = getRegions(structuredDocument, new FormatRegion(start, end - start), exceptFor, pickupType); |
| } |
| // generate source |
| if (prev != null) { |
| if (regions.length > 0 && !regions[0].getType().equals(CSSRegionContexts.CSS_COMMENT)) |
| appendDelimBefore(node, regions[0], source); |
| else if (regions.length == 0) { |
| appendDelimBefore(node, null, source); |
| } |
| } |
| for (int i = 0; i < regions.length; i++) { |
| appendDelimBefore(node, regions[i], source); |
| source.append(decoratedRegion(regions[i], 0, stgy)); // must |
| // be |
| // comments |
| // or |
| // semi_colon |
| if (regions[i].getType() == CSSRegionContexts.CSS_DELIMITER) { |
| // append delim after |
| appendDelimBefore(node, null, source); |
| } |
| } |
| if (prev != null) |
| appendDelimBefore(node, null, source); |
| } |
| else if (prev != null && child != null) { // source generation : |
| // between two rules |
| source.append(delim); |
| source.append(delim); |
| } |
| else if (((IndexedRegion) node).getEndOffset() > 0) { |
| if (prev == null) { // source formatting : before the first rule |
| ICSSNode next = child.getNextSibling(); |
| int pos = getChildInsertPos(node); |
| if (next != null && ((IndexedRegion) next).getEndOffset() > 0) |
| pos = ((IndexedRegion) next).getStartOffset(); |
| if (pos != 0) { |
| IStructuredDocument structuredDocument = node.getOwnerDocument().getModel().getStructuredDocument(); |
| CompoundRegion[] prevRegions = getRegions(structuredDocument, new FormatRegion(0, pos), null, null); |
| if (prevRegions != null && prevRegions.length > 0) |
| appendDelimBefore(node, null, source); |
| } |
| } |
| else if (child == null) { // source formatting : after the last |
| // rule |
| if (start > 0 && start <= ((IndexedRegion) node).getEndOffset()) { |
| appendDelimBefore(node, null, source); |
| } |
| else if (start <= 0) { |
| int pos = getChildInsertPos(node); |
| if (pos < ((IndexedRegion) node).getEndOffset()) { |
| appendDelimBefore(node, null, 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])) |
| appendDelimBefore(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()) |
| appendDelimBefore(node, null, source); |
| } |
| } |
| |
| /** |
| * |
| */ |
| protected void formatPost(ICSSNode node, StringBuffer source) { |
| 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) { |
| 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++) { |
| appendDelimBefore(node, regions[i], source); |
| source.append(decoratedRegion(regions[i], 0, stgy)); |
| } |
| if ((regions != null && regions.length > 0 && regions[regions.length - 1].getType() == CSSRegionContexts.CSS_CDC) || node.getOwnerDocument().getModel().getStyleSheetType() == ICSSModel.EMBEDDED) |
| appendDelimBefore(node, null, source); |
| } |
| else { // source generation |
| if (node.getOwnerDocument().getModel() != null && node.getOwnerDocument().getModel().getStyleSheetType() == ICSSModel.EMBEDDED) |
| appendDelimBefore(node, null, source); |
| return; // nothing |
| } |
| } |
| |
| /** |
| * |
| */ |
| 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])) |
| appendDelimBefore(node, regions[i], source); |
| source.append(decoratedRegion(regions[i], 0, stgy)); |
| } |
| } |
| |
| /** |
| * |
| */ |
| protected void formatPre(org.eclipse.wst.css.core.internal.provisional.document.ICSSNode node, java.lang.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) { |
| 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++) { |
| if (i != 0 || regions[i].getType() == CSSRegionContexts.CSS_CDO || node.getOwnerDocument().getModel().getStyleSheetType() == ICSSModel.EMBEDDED) |
| appendDelimBefore(node, regions[i], source); |
| source.append(decoratedRegion(regions[i], 0, stgy)); |
| } |
| if (node.getLastChild() != null && (source.length() > 0 || node.getOwnerDocument().getModel().getStyleSheetType() == ICSSModel.EMBEDDED)) { |
| appendDelimBefore(node, null, source); |
| } |
| } |
| else if (node.getOwnerDocument().getModel() != null && node.getOwnerDocument().getModel().getStyleSheetType() == ICSSModel.EMBEDDED) { |
| appendDelimBefore(node, null, source); |
| // source.append("<!--"); |
| // appendDelimBefore(node,null, source); |
| } |
| else |
| return; // nothing |
| } |
| |
| /** |
| * |
| */ |
| protected void formatPre(ICSSNode node, IRegion region, java.lang.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() == CSSRegionContexts.CSS_CDO || node.getOwnerDocument().getModel().getStyleSheetType() == ICSSModel.EMBEDDED) |
| appendDelimBefore(node, regions[i], source); |
| source.append(decoratedRegion(regions[i], 0, stgy)); |
| } |
| if (needS(outside[1])) { |
| if (isIncludesPreEnd(node, region)) { |
| if (source.length() > 0 || node.getOwnerDocument().getModel().getStyleSheetType() == ICSSModel.EMBEDDED) { |
| String delim = getLineDelimiter(node); |
| source.append(delim); |
| } |
| } |
| } |
| } |
| |
| /** |
| * |
| */ |
| public int getChildInsertPos(ICSSNode node) { |
| int n = ((IndexedRegion) node).getEndOffset(); |
| if (n > 0) { |
| IStructuredDocument structuredDocument = node.getOwnerDocument().getModel().getStructuredDocument(); |
| IStructuredDocumentRegion flatNode = structuredDocument.getRegionAtCharacterOffset(n - 1); |
| ITextRegion region = flatNode.getRegionAtCharacterOffset(n - 1); |
| RegionIterator it = new RegionIterator(flatNode, region); |
| while (it.hasPrev()) { |
| ITextRegion reg = it.prev(); |
| if (reg.getType() == CSSRegionContexts.CSS_CDC) |
| return it.getStructuredDocumentRegion().getStartOffset(reg); |
| } |
| return n; |
| } |
| return -1; |
| } |
| |
| /** |
| * |
| */ |
| public synchronized static StyleSheetFormatter getInstance() { |
| if (instance == null) |
| instance = new StyleSheetFormatter(); |
| return instance; |
| } |
| } |