/*******************************************************************************
* 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.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 'background' property 'background' will be expanded to
* 'background-attachment', 'background-color', 'background-image',
* 'background-position', 'background-repeat',
*/
public class BackgroundShorthandAdapter implements IShorthandAdapter {
/**
*
*/
public BackgroundShorthandAdapter() {
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 color = "", image = "", repeat = "", attach = "", pos = "";//$NON-NLS-5$//$NON-NLS-4$//$NON-NLS-3$//$NON-NLS-2$//$NON-NLS-1$
PropCMProperty propColor = PropCMProperty.getInstanceOf(PropCMProperty.P_BG_COLOR);
PropCMProperty propImage = PropCMProperty.getInstanceOf(PropCMProperty.P_BG_IMAGE);
PropCMProperty propRepeat = PropCMProperty.getInstanceOf(PropCMProperty.P_BG_REPEAT);
PropCMProperty propAttach = PropCMProperty.getInstanceOf(PropCMProperty.P_BG_ATTACHMENT);
PropCMProperty propPos = PropCMProperty.getInstanceOf(PropCMProperty.P_BG_POSITION);
for (int i = 0; i < tokens.length; i++) {
if (tokens[i].kind == CSSRegionContexts.CSS_DECLARATION_VALUE_IDENT) {
if (propColor.canHave(tokens[i].image))
color = tokens[i].image;
else if (propImage.canHave(tokens[i].image))
image = tokens[i].image;
else if (propRepeat.canHave(tokens[i].image))
repeat = tokens[i].image;
else if (propAttach.canHave(tokens[i].image))
attach = tokens[i].image;
else if (propPos.canHave(tokens[i].image)) {
if (pos == null || pos.length() <= 0)
pos = tokens[i].image;
else
pos = pos + " " + tokens[i].image;//$NON-NLS-1$
}
}
else 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_PERCENTAGE) {
if (pos == null || pos.length() <= 0)
pos = tokens[i].image;
else
pos = pos + " " + tokens[i].image;//$NON-NLS-1$
}
else if (tokens[i].kind == CSSRegionContexts.CSS_DECLARATION_VALUE_URI) {
image = tokens[i].image;
}
else if (tokens[i].kind == CSSRegionContexts.CSS_DECLARATION_VALUE_HASH) {
color = tokens[i].image;
}
else if (tokens[i].kind == CSSRegionContexts.CSS_DECLARATION_VALUE_FUNCTION) {
StringBuffer buf = new StringBuffer();
while (i < tokens.length) {
if (tokens[i].kind == CSSRegionContexts.CSS_COMMENT) {
i++;
continue;
}
buf.append(tokens[i].image);
if (tokens[i++].kind == CSSRegionContexts.CSS_DECLARATION_VALUE_PARENTHESIS_CLOSE)
break;
}
i--;
color = buf.toString();
}
}
dest.set(propColor.getName(), color);
dest.set(propImage.getName(), image);
dest.set(propRepeat.getName(), repeat);
dest.set(propAttach.getName(), attach);
dest.set(propPos.getName(), pos);
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 color = null, image = null, repeat = null, attach = null, pos = null;
PropCMProperty propColor = PropCMProperty.getInstanceOf(PropCMProperty.P_BG_COLOR);
PropCMProperty propImage = PropCMProperty.getInstanceOf(PropCMProperty.P_BG_IMAGE);
PropCMProperty propRepeat = PropCMProperty.getInstanceOf(PropCMProperty.P_BG_REPEAT);
PropCMProperty propAttach = PropCMProperty.getInstanceOf(PropCMProperty.P_BG_ATTACHMENT);
PropCMProperty propPos = PropCMProperty.getInstanceOf(PropCMProperty.P_BG_POSITION);
for (int i = 0; i < tokens.length; i++) {
if (tokens[i].kind == CSSRegionContexts.CSS_DECLARATION_VALUE_IDENT) {
if (propColor.canHave(tokens[i].image))
color = tokens[i].image;
else if (propImage.canHave(tokens[i].image))
image = tokens[i].image;
else if (propRepeat.canHave(tokens[i].image))
repeat = tokens[i].image;
else if (propAttach.canHave(tokens[i].image))
attach = tokens[i].image;
else if (propPos.canHave(tokens[i].image)) {
if (pos == null)
pos = tokens[i].image;
else
pos = pos + " " + tokens[i].image;//$NON-NLS-1$
}
}
else 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_PERCENTAGE) {
if (pos == null)
pos = tokens[i].image;
else
pos = pos + " " + tokens[i].image;//$NON-NLS-1$
}
else if (tokens[i].kind == CSSRegionContexts.CSS_DECLARATION_VALUE_URI) {
image = tokens[i].image;
}
else if (tokens[i].kind == CSSRegionContexts.CSS_DECLARATION_VALUE_HASH) {
color = tokens[i].image;
}
else if (tokens[i].kind == CSSRegionContexts.CSS_DECLARATION_VALUE_FUNCTION) {
StringBuffer buf = new StringBuffer();
while (i < tokens.length) {
if (tokens[i].kind == CSSRegionContexts.CSS_COMMENT) {
i++;
continue;
}
buf.append(tokens[i].image);
if (tokens[i++].kind == CSSRegionContexts.CSS_DECLARATION_VALUE_PARENTHESIS_CLOSE)
break;
}
i--;
color = buf.toString();
}
}
if (propColor == propDest)
return color;
else if (propImage == propDest)
return image;
else if (propRepeat == propDest)
return repeat;
else if (propAttach == propDest)
return attach;
else if (propPos == propDest)
return pos;
else
return null;
}
}