| /******************************************************************************* |
| * 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.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 MediaRuleFormatter extends AbstractCSSSourceFormatter { |
| |
| public final static java.lang.String MEDIA = "@media";//$NON-NLS-1$ |
| private static MediaRuleFormatter instance; |
| |
| /** |
| * |
| */ |
| MediaRuleFormatter() { |
| super(); |
| } |
| |
| /** |
| * |
| */ |
| protected void formatBefore(ICSSNode node, ICSSNode child, String toAppend, StringBuffer source, IRegion exceptFor) { |
| 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) { // source formatting |
| 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 = null; |
| if ((prev != null && prev.getNodeType() == ICSSNode.MEDIALIST_NODE) || (prev == null && (child == null || child.getNodeType() != ICSSNode.MEDIALIST_NODE))) { |
| pickupType = CSSRegionContexts.CSS_LBRACE; |
| } |
| regions = getRegions(structuredDocument, new FormatRegion(start, end - start), exceptFor, pickupType); |
| } |
| // extract source |
| if (child != null && child.getNodeType() == ICSSNode.MEDIALIST_NODE) { // between |
| // "@media" |
| // and |
| // mediatype |
| 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 (child != null && (child.getPreviousSibling() == null || child.getPreviousSibling().getNodeType() == ICSSNode.MEDIALIST_NODE)) { // between |
| // mediatype |
| // and |
| // the |
| // first |
| // style |
| // rule |
| for (int i = 0; i < regions.length; i++) { |
| appendSpaceBefore(node, regions[i], source); |
| source.append(decoratedRegion(regions[i], 0, stgy)); // must |
| // be |
| // comments |
| } |
| appendDelimBefore(node, null, source); |
| } else { // between styles |
| for (int i = 0; i < regions.length; i++) { |
| appendDelimBefore(node, regions[i], source); |
| source.append(decoratedRegion(regions[i], 0, stgy)); // must |
| // be |
| // comments |
| } |
| appendDelimBefore(node, null, source); |
| } |
| } else { // source generation |
| if (child == null && prev != null && prev.getNodeType() != ICSSNode.MEDIALIST_NODE) { // after |
| // the |
| // last |
| // style |
| // rule |
| appendDelimBefore(node.getParentNode(), null, source); |
| } else if (child != null && child.getNodeType() == ICSSNode.MEDIALIST_NODE) { // between |
| // "@media" |
| // and |
| // mediatype |
| appendSpaceBefore(node, toAppend, source); |
| } else if (prev != null && prev.getNodeType() == ICSSNode.MEDIALIST_NODE) { // between |
| // mediatype |
| // and |
| // the |
| // first |
| // style |
| // rule |
| appendSpaceBefore(node, "{", source);//$NON-NLS-1$ |
| source.append("{");//$NON-NLS-1$ |
| if (child != null) |
| appendDelimBefore(node, null, source); |
| else |
| appendDelimBefore(node.getParentNode(), null, source); |
| } else { // normal case |
| 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); |
| if (child != null && child.getNodeType() == ICSSNode.MEDIALIST_NODE) { // between |
| // "@media" |
| // and |
| // mediatype |
| 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]) && ((IndexedRegion) child).getStartOffset() == region.getOffset() + region.getLength()) { |
| appendSpaceBefore(node, toAppend, source); |
| } |
| } else if (child != null && (child.getPreviousSibling() == null || child.getPreviousSibling().getNodeType() == ICSSNode.MEDIALIST_NODE)) { // between |
| // mediatype |
| // and |
| // the |
| // first |
| // style |
| // rule |
| 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]) && ((IndexedRegion) child).getStartOffset() == region.getOffset() + region.getLength()) { |
| appendDelimBefore(node, null, source); |
| } |
| } else { // between styles |
| 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]) && ((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) { // source formatting |
| CSSCleanupStrategy stgy = getCleanupStrategy(node); |
| |
| IStructuredDocument structuredDocument = node.getOwnerDocument().getModel().getStructuredDocument(); |
| CompoundRegion[] regions = getRegionsWithoutWhiteSpaces(structuredDocument, new FormatRegion(start, end - start), stgy); |
| if (node.getLastChild() == null || node.getLastChild().getNodeType() != ICSSNode.MEDIALIST_NODE) { |
| for (int i = 0; i < regions.length; i++) { |
| appendDelimBefore(node, regions[i], source); |
| source.append(decoratedRegion(regions[i], 0, stgy)); |
| } |
| } else { |
| boolean bInCurlyBrace = false; |
| for (int i = 0; i < regions.length; i++) { |
| if (!bInCurlyBrace) |
| appendSpaceBefore(node, regions[i], source); |
| else |
| appendDelimBefore(node, regions[i], source); |
| source.append(decoratedRegion(regions[i], 0, stgy)); |
| if (regions[i].getType() == CSSRegionContexts.CSS_LBRACE) |
| bInCurlyBrace = true; |
| } |
| } |
| } else { // source generation |
| String delim = getLineDelimiter(node); |
| if (node.getLastChild() != null && node.getLastChild().getNodeType() == ICSSNode.MEDIALIST_NODE) { |
| appendSpaceBefore(node, "{", source);//$NON-NLS-1$ |
| source.append("{");//$NON-NLS-1$ |
| } |
| |
| source.append(delim); |
| source.append(getIndent(node)); |
| 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])) |
| 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) { // source formatting |
| 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) |
| appendSpaceBefore(node, regions[i], source); |
| source.append(decoratedIdentRegion(regions[i], stgy)); |
| } |
| } else { // source generation |
| String str = MEDIA; |
| if (CSSCorePlugin.getDefault().getPluginPreferences().getInt(CSSCorePreferenceNames.CASE_IDENTIFIER) == CSSCorePreferenceNames.UPPER) |
| str = MEDIA.toUpperCase(); |
| 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++) { |
| 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 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_LBRACE) |
| return n - 1; |
| return n; |
| } |
| return -1; |
| } |
| |
| /** |
| * |
| */ |
| public synchronized static MediaRuleFormatter getInstance() { |
| if (instance == null) |
| instance = new MediaRuleFormatter(); |
| return instance; |
| } |
| |
| /** |
| * |
| * @return int |
| * @param node |
| * org.eclipse.wst.css.core.model.interfaces.ICSSNode |
| * @param insertPos |
| * int |
| */ |
| public int getLengthToReformatAfter(ICSSNode node, int insertPos) { |
| if (node == null) |
| return 0; |
| IndexedRegion nnode = (IndexedRegion) node; |
| if (insertPos <= 0 || !nnode.contains(insertPos - 1)) |
| return 0; |
| |
| if (node.getFirstChild().getNextSibling() == node.getLastChild()) { // inserted |
| // first |
| // style |
| // rule |
| IStructuredDocumentRegion flatNode = node.getOwnerDocument().getModel().getStructuredDocument().getRegionAtCharacterOffset(insertPos); |
| if (flatNode == null) |
| return 0; |
| ITextRegion region = flatNode.getRegionAtCharacterOffset(insertPos); |
| if (region == null) |
| return 0; |
| RegionIterator it = new RegionIterator(flatNode, region); |
| while (it.hasNext()) { |
| region = it.next(); |
| if (region.getType() == CSSRegionContexts.CSS_LBRACE) |
| break; |
| if (nnode.getEndOffset() <= it.getStructuredDocumentRegion().getEndOffset(region)) |
| break; |
| } |
| int pos = it.getStructuredDocumentRegion().getStartOffset(region) - insertPos; |
| return (pos >= 0) ? pos : 0; |
| |
| } |
| return super.getLengthToReformatAfter(node, insertPos); |
| } |
| |
| /** |
| * |
| * @return int |
| * @param node |
| * org.eclipse.wst.css.core.model.interfaces.ICSSNode |
| * @param insertPos |
| * int |
| */ |
| public int getLengthToReformatBefore(ICSSNode node, int insertPos) { |
| if (node == null) |
| return 0; |
| IndexedRegion nnode = (IndexedRegion) node; |
| if (insertPos <= 0 || !nnode.contains(insertPos - 1)) |
| return 0; |
| |
| if (node.getFirstChild().getNextSibling() == node.getLastChild()) { // inserted |
| // first |
| // style |
| // rule |
| int pos = ((IndexedRegion) node.getFirstChild()).getEndOffset(); |
| if (pos <= 0) |
| pos = ((IndexedRegion) node).getStartOffset() + 6 /* |
| * length |
| * of |
| * "@media" |
| */; |
| return insertPos - pos; |
| } |
| return super.getLengthToReformatBefore(node, insertPos); |
| } |
| } |