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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.util.declaration;
import java.util.Collection;
import java.util.Iterator;
import org.eclipse.wst.css.core.document.ICSSPrimitiveValue;
import org.eclipse.wst.css.core.document.ICSSValue;
import org.eclipse.wst.css.core.document.ICSSValueList;
import org.eclipse.wst.css.core.internal.contentmodel.IValID;
import org.eclipse.wst.css.core.internal.contentmodel.PropCMProperty;
import org.eclipse.wst.css.core.internal.contentmodel.PropCMSubProperty;
import org.eclipse.wst.css.core.internal.contentmodel.PropCMUtil;
import org.eclipse.wst.css.core.parser.CSSRegionContexts;
import org.eclipse.wst.css.core.parser.CSSTextParser;
import org.eclipse.wst.css.core.parser.CSSTextToken;
import org.w3c.dom.css.CSSPrimitiveValue;
import org.w3c.dom.css.CSSValue;
/**
* for horizontal value of 'background-position'
*/
public class BackgroundPositionXSubStyleAdapter implements ISubPropertyAdapter {
/**
*
*/
public BackgroundPositionXSubStyleAdapter() {
super();
}
/**
*
*/
protected CSSTextToken[] correctMeaningToken(CSSTextToken[] src) {
java.util.ArrayList list = new java.util.ArrayList();
for (int i = 0; i < src.length; i++) {
if (src[i].kind != CSSRegionContexts.CSS_S && src[i].kind != CSSRegionContexts.CSS_DECLARATION_VALUE_S && src[i].kind != CSSRegionContexts.CSS_COMMENT)
list.add(src[i]);
}
CSSTextToken[] ret = new CSSTextToken[list.size()];
list.toArray(ret);
return ret;
}
/**
*
*/
public String get(ICSS2Properties properties) {
String str = null;
Object obj = properties.get(PropCMProperty.getInstanceOf(PropCMProperty.P_BG_POSITION));
if (obj != null) {
PropCMProperty propX = PropCMSubProperty.getInstanceOf(PropCMSubProperty.PSUB_BG_POSITION_X);
PropCMProperty propY = PropCMSubProperty.getInstanceOf(PropCMSubProperty.PSUB_BG_POSITION_Y);
if (obj instanceof ICSSValueList) {
ICSSValueList list = (ICSSValueList) obj;
ICSSValue value = (ICSSValue) list.item(0);
if (value.getCssValueType() == CSSValue.CSS_PRIMITIVE_VALUE) {
ICSSPrimitiveValue prim = (ICSSPrimitiveValue) value;
if (prim.getPrimitiveType() == CSSPrimitiveValue.CSS_IDENT) {
// check not top or bottom
if (!propX.canHave(prim.getStringValue()) && propY.canHave(prim.getStringValue())) {
// case order is vertical -> horizontal
value = (ICSSValue) list.item(1);
}
}
}
str = value.getCSSValueText();
}
else if (obj instanceof ICSSValue) {
str = ((ICSSValue) obj).getCSSValueText();
if (str.equalsIgnoreCase(IValID.V_BOTTOM) || str.equalsIgnoreCase(IValID.V_TOP))
str = "";//$NON-NLS-1$
}
else {
str = obj.toString();
CSSTextParser parser = new CSSTextParser(CSSTextParser.MODE_DECLARATION_VALUE, str);
CSSTextToken[] tokens = parser.getTokens();
tokens = correctMeaningToken(tokens);
if (tokens.length == 0)
str = "";//$NON-NLS-1$
else if (tokens.length == 1 && (tokens[0].image.equalsIgnoreCase(IValID.V_BOTTOM) || tokens[0].image.equalsIgnoreCase(IValID.V_TOP)))
str = "";//$NON-NLS-1$
else
str = tokens[0].image;
}
}
return (str != null) ? str : "";//$NON-NLS-1$
}
/**
*
*/
public void set(ICSS2Properties properties, String value) throws org.w3c.dom.DOMException {
String newValue = null;
String valH = value;
String valV = properties.getBackgroundPositionY();
if (valV == null || valV.length() == 0)
newValue = valH;
else if (valH == null || valH.length() == 0) {
Collection valX = PropCMSubProperty.getInstanceOf(PropCMSubProperty.PSUB_BG_POSITION_X).getValues();
Collection valY = PropCMSubProperty.getInstanceOf(PropCMSubProperty.PSUB_BG_POSITION_Y).getValues();
PropCMUtil.minus(valY, valX);
Iterator it = valY.iterator();
while (it.hasNext()) {
Object obj = it.next();
if (obj.toString().equals(valV.toLowerCase())) {
// need not compensate for ...
newValue = valV;
break;
}
}
// compensate for Horizontal value
if (newValue == null) {
// check valV is length or not
CSSTextParser parser = new CSSTextParser(CSSTextParser.MODE_DECLARATION_VALUE, valV.trim());
CSSTextToken[] tokens = parser.getTokens();
if (tokens != null && tokens.length > 0 && tokens[0].kind == CSSRegionContexts.CSS_DECLARATION_VALUE_IDENT) {
newValue = IValID.V_LEFT + " " + valV;//$NON-NLS-1$
}
else
newValue = "0% " + valV;//$NON-NLS-1$
}
}
else
newValue = valH + " " + valV;//$NON-NLS-1$
properties.setBackgroundPosition(newValue);
}
}
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