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/*******************************************************************************
* 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.util.declaration;
import org.eclipse.wst.css.core.internal.contentmodel.PropCMProperty;
import org.eclipse.wst.css.core.internal.parserz.CSSRegionContexts;
import org.eclipse.wst.css.core.internal.parserz.CSSTextParser;
import org.eclipse.wst.css.core.internal.parserz.CSSTextToken;
/**
* For 'margin' property 'margin' will be expanded to 'margin-top',
* 'margin-right', 'margin-bottom', 'margin-left',
*/
public class MarginShorthandAdapter implements IShorthandAdapter {
/**
*
*/
public MarginShorthandAdapter() {
super();
}
/**
*
*/
public boolean expand(String source, CSSPropertyContext dest) {
CSSTextParser parser = new CSSTextParser(CSSTextParser.MODE_DECLARATION_VALUE, source);
CSSTextToken[] tokens = parser.getTokens();
if (tokens.length <= 0) {
return false;
}
String[] idents = new String[4];
int j = 0;
for (int i = 0; i < tokens.length; i++) {
if (org.eclipse.wst.css.core.internal.util.CSSUtil.isLength(tokens[i]) || tokens[i].kind == CSSRegionContexts.CSS_DECLARATION_VALUE_NUMBER || tokens[i].kind == CSSRegionContexts.CSS_DECLARATION_VALUE_IDENT || tokens[i].kind == CSSRegionContexts.CSS_DECLARATION_VALUE_PERCENTAGE)
idents[j++] = tokens[i].image;
if (j == 4)
break;
}
String[] dests = new String[4];
if (j == 0)
return true;
else if (j == 1) {
dests[0] = dests[1] = dests[2] = dests[3] = idents[0];
}
else if (j == 2) {
dests[0] = dests[2] = idents[0];
dests[1] = dests[3] = idents[1];
}
else if (j == 3) {
dests[0] = idents[0];
dests[1] = dests[3] = idents[1];
dests[2] = idents[2];
}
else {
for (int k = 0; k < 4; k++)
dests[k] = idents[k];
}
dest.set(PropCMProperty.P_MARGIN_TOP, dests[0]);
dest.set(PropCMProperty.P_MARGIN_RIGHT, dests[1]);
dest.set(PropCMProperty.P_MARGIN_BOTTOM, dests[2]);
dest.set(PropCMProperty.P_MARGIN_LEFT, dests[3]);
return true;
}
/**
*
*/
public String extract(String source, PropCMProperty propDest) {
CSSTextParser parser = new CSSTextParser(CSSTextParser.MODE_DECLARATION_VALUE, source);
CSSTextToken[] tokens = parser.getTokens();
if (tokens.length <= 0) {
return null;
}
String[] idents = new String[4];
int j = 0;
for (int i = 0; i < tokens.length; i++) {
if (org.eclipse.wst.css.core.internal.util.CSSUtil.isLength(tokens[i]) || tokens[i].kind == CSSRegionContexts.CSS_DECLARATION_VALUE_NUMBER || tokens[i].kind == CSSRegionContexts.CSS_DECLARATION_VALUE_IDENT || tokens[i].kind == CSSRegionContexts.CSS_DECLARATION_VALUE_PERCENTAGE)
idents[j++] = tokens[i].image;
if (j == 4)
break;
}
if (j == 0)
return null;
else if (j == 1)
return idents[0];
else if (j == 2) {
if (propDest.getName() == PropCMProperty.P_MARGIN_TOP || propDest.getName() == PropCMProperty.P_MARGIN_BOTTOM)
return idents[0];
else
return idents[1];
}
else if (j == 3) {
if (propDest.getName() == PropCMProperty.P_MARGIN_TOP)
return idents[0];
else if (propDest.getName() == PropCMProperty.P_MARGIN_BOTTOM)
return idents[2];
else
return idents[1];
}
else {
if (propDest.getName() == PropCMProperty.P_MARGIN_TOP)
return idents[0];
else if (propDest.getName() == PropCMProperty.P_MARGIN_RIGHT)
return idents[1];
else if (propDest.getName() == PropCMProperty.P_MARGIN_BOTTOM)
return idents[2];
else if (propDest.getName() == PropCMProperty.P_MARGIN_LEFT)
return idents[3];
else
return null;
}
}
}
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