/*******************************************************************************
* Copyright (c) 2004, 2008 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.ICSSModel;
import org.eclipse.wst.css.core.internal.provisional.document.ICSSNode;
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 StyleDeclarationFormatter extends DefaultCSSSourceFormatter {
private static StyleDeclarationFormatter instance;
/**
*
*/
StyleDeclarationFormatter() {
super();
}
/**
*
*/
protected void formatBefore(ICSSNode node, ICSSNode child, String toAppend, StringBuffer source, IRegion exceptFor) {
CSSCleanupStrategy stgy = getCleanupStrategy(node);
ICSSNode prev = (child != null) ? child.getPreviousSibling() : node.getLastChild();
int start = (prev != null) ? ((IndexedRegion) prev).getEndOffset() : 0;
int end = (child != null) ? ((IndexedRegion) child).getStartOffset() : 0;
// check no child
if (child == null && prev == null)
return;
if (start > 0 && start < end) { // format source
ICSSModel cssModel = node.getOwnerDocument().getModel();
// BUG202615 - it is possible to have a style declaration with no
// model associated with it
if (cssModel != null) {
IStructuredDocument structuredDocument = cssModel.getStructuredDocument();
if (structuredDocument != null) {
// get meaning regions
CompoundRegion[] regions = null;
if (exceptFor == null)
regions = getRegionsWithoutWhiteSpaces(structuredDocument, new FormatRegion(start, end - start), stgy);
else {
String pickupType = CSSRegionContexts.CSS_DECLARATION_DELIMITER;
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
}
}
}
} else if (prev != null && child != null) { // generate source :
// between two declarations
// BUG93037-properties view adds extra ; when add new property
boolean semicolonFound = false;
ICSSModel cssModel = node.getOwnerDocument().getModel();
// BUG202615 - it is possible to have a style declaration with no
// model associated with it
if (cssModel != null) {
IStructuredDocument structuredDocument = cssModel.getStructuredDocument();
if (structuredDocument != null) {
int prevStart = (prev != null) ? ((IndexedRegion) prev).getStartOffset() : 0;
int prevEnd = (prev != null) ? ((IndexedRegion) prev).getEndOffset() : 0;
CompoundRegion[] regions = getRegionsWithoutWhiteSpaces(structuredDocument, new FormatRegion(prevStart, prevEnd - prevStart), stgy);
int i = regions.length - 1;
while (i >= 0 && !semicolonFound) {
if (regions[i].getType() == CSSRegionContexts.CSS_DECLARATION_DELIMITER)
semicolonFound = true;
--i;
}
}
}
if (!semicolonFound)
source.append(";");//$NON-NLS-1$
} else if (prev == null) { // generate source : before the first
// declaration
org.eclipse.wst.css.core.internal.util.RegionIterator it = null;
if (end > 0) {
ICSSModel cssModel = node.getOwnerDocument().getModel();
// BUG202615 - it is possible to have a style declaration with
// no model associated with it
if (cssModel != null) {
IStructuredDocument structuredDocument = cssModel.getStructuredDocument();
if (structuredDocument != null) {
it = new org.eclipse.wst.css.core.internal.util.RegionIterator(structuredDocument, end - 1);
}
}
} else {
int pos = getChildInsertPos(node);
if (pos >= 0) {
ICSSModel cssModel = node.getOwnerDocument().getModel();
// BUG202615 - it is possible to have a style declaration
// with no model associated with it
if (cssModel != null) {
IStructuredDocument structuredDocument = cssModel.getStructuredDocument();
if (structuredDocument != null) {
it = new org.eclipse.wst.css.core.internal.util.RegionIterator(structuredDocument, pos - 1);
}
}
}
}
if (it != null) {
int limit = ((IndexedRegion) ((node.getParentNode() != null) ? node.getParentNode() : node)).getStartOffset();
while (it.hasPrev()) {
ITextRegion curReg = it.prev();
if (curReg.getType() == CSSRegionContexts.CSS_LBRACE || curReg.getType() == CSSRegionContexts.CSS_DECLARATION_DELIMITER)
break;
if (curReg.getType() != CSSRegionContexts.CSS_S && curReg.getType() != CSSRegionContexts.CSS_COMMENT) {
source.append(";");//$NON-NLS-1$
break;
}
if (it.getStructuredDocumentRegion().getStartOffset(curReg) <= limit)
break;
}
}
} else if (child == null) { // generate source : after the last
// declaration
org.eclipse.wst.css.core.internal.util.RegionIterator it = null;
if (start > 0) {
ICSSModel cssModel = node.getOwnerDocument().getModel();
// BUG202615 - it is possible to have a style declaration with
// no model associated with it
if (cssModel != null) {
IStructuredDocument structuredDocument = cssModel.getStructuredDocument();
if (structuredDocument != null) {
it = new org.eclipse.wst.css.core.internal.util.RegionIterator(structuredDocument, start);
}
}
} else {
int pos = getChildInsertPos(node);
if (pos >= 0) {
ICSSModel cssModel = node.getOwnerDocument().getModel();
// BUG202615 - it is possible to have a style declaration
// with no model associated with it
if (cssModel != null) {
IStructuredDocument structuredDocument = cssModel.getStructuredDocument();
if (structuredDocument != null) {
it = new org.eclipse.wst.css.core.internal.util.RegionIterator(structuredDocument, pos);
}
}
}
}
if (it != null) {
int limit = ((IndexedRegion) ((node.getParentNode() != null) ? node.getParentNode() : node)).getEndOffset();
while (it.hasNext()) {
ITextRegion curReg = it.next();
if (curReg.getType() == CSSRegionContexts.CSS_RBRACE || curReg.getType() == CSSRegionContexts.CSS_DECLARATION_DELIMITER)
break;
if (curReg.getType() != CSSRegionContexts.CSS_S && curReg.getType() != CSSRegionContexts.CSS_COMMENT) {
// Bug 219004 - Before appending a ;, make sure that there
// isn't one already
boolean semicolonFound = false;
while(it.hasNext() && !semicolonFound) {
if(it.next().getType() == CSSRegionContexts.CSS_DECLARATION_DELIMITER)
semicolonFound = true;
}
if(!semicolonFound)
source.append(";");//$NON-NLS-1$
break;
}
if (limit <= it.getStructuredDocumentRegion().getEndOffset(curReg))
break;
}
}
}
if (child == null) {
if (((IndexedRegion) node).getEndOffset() <= 0) {
// get next region
int pos = getChildInsertPos(node);
CompoundRegion toAppendRegion = null;
if (pos >= 0) {
ICSSModel cssModel = node.getOwnerDocument().getModel();
// BUG202615 - it is possible to have a style declaration
// with no model associated with it
if (cssModel != null) {
IStructuredDocument structuredDocument = cssModel.getStructuredDocument();
if (structuredDocument != null) {
IStructuredDocumentRegion flatNode = structuredDocument.getRegionAtCharacterOffset(pos);
toAppendRegion = new CompoundRegion(flatNode, flatNode.getRegionAtCharacterOffset(pos));
}
}
}
appendDelimBefore(node.getParentNode(), toAppendRegion, source);
}
} else if ((prev != null || ((IndexedRegion) node).getEndOffset() <= 0)) {
Preferences preferences = CSSCorePlugin.getDefault().getPluginPreferences();
if (preferences.getBoolean(CSSCorePreferenceNames.WRAPPING_ONE_PER_LINE) && (node.getOwnerDocument() != node || !preferences.getBoolean(CSSCorePreferenceNames.WRAPPING_PROHIBIT_WRAP_ON_ATTR)))
appendDelimBefore(node, null, source);
else if (prev != null || node.getOwnerDocument() != node)
appendSpaceBefore(node, toAppend, source);
}
}
/**
*
*/
protected void formatBefore(ICSSNode node, ICSSNode child, IRegion region, String toAppend, StringBuffer source) {
CSSCleanupStrategy stgy = getCleanupStrategy(node);
ICSSModel cssModel = node.getOwnerDocument().getModel();
// BUG202615 - it is possible to have a style declaration
// with no model associated with it
if (cssModel != null) {
IStructuredDocument structuredDocument = cssModel.getStructuredDocument();
if (structuredDocument != null) {
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
}
Preferences preferences = CSSCorePlugin.getDefault().getPluginPreferences();
if (needS(outside[1])) {
if (((IndexedRegion) child).getStartOffset() == region.getOffset() + region.getLength() && preferences.getBoolean(CSSCorePreferenceNames.WRAPPING_ONE_PER_LINE) && (node.getOwnerDocument() != node || !preferences.getBoolean(CSSCorePreferenceNames.WRAPPING_PROHIBIT_WRAP_ON_ATTR))) {
appendDelimBefore(node, null, source);
} else
appendSpaceBefore(node, toAppend, source);
}
}
}
}
/**
* Insert the method's description here.
*/
public int getChildInsertPos(ICSSNode node) {
if (node == null)
return -1;
int pos = super.getChildInsertPos(node);
if (pos < 0) {
CSSSourceGenerator formatter = getParentFormatter(node);
return (formatter != null) ? formatter.getChildInsertPos(node.getParentNode()) : -1;
}
return pos;
}
/**
*
*/
public synchronized static StyleDeclarationFormatter getInstance() {
if (instance == null)
instance = new StyleDeclarationFormatter();
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)) {
if (node.getParentNode() != null && nnode.getEndOffset() <= 0) {
CSSSourceGenerator pntFormatter = getParentFormatter(node);
if (pntFormatter != null)
return pntFormatter.getLengthToReformatAfter(node.getParentNode(), insertPos);
}
return 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)) {
if (node.getParentNode() != null && nnode.getEndOffset() <= 0) {
CSSSourceGenerator pntFormatter = getParentFormatter(node);
if (pntFormatter != null)
return pntFormatter.getLengthToReformatBefore(node.getParentNode(), insertPos);
}
return 0;
}
return super.getLengthToReformatBefore(node, insertPos);
}
}