/*******************************************************************************
* Copyright (c) 2009, 2014 EclipseSource 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:
* EclipseSource - initial API and implementation
* IBM Corporation - ongoing development
* Lars Vogel <Lars.Vogel@gmail.com> - Bug 422702
******************************************************************************/
package org.eclipse.e4.ui.css.core.impl.dom;
import java.util.Comparator;
import org.w3c.dom.css.CSSStyleDeclaration;
/**
* A wrapper that holds a reference to the styles defined in a CSS rule block,
* together with all the information needed to calculate a matching selector's
* precedence.
*/
final class StyleWrapper {
private static class StyleWrapperComparator implements Comparator<StyleWrapper> {
@Override
public int compare(final StyleWrapper object1, final StyleWrapper object2) {
int result = 0;
StyleWrapper wrapper1 = object1;
StyleWrapper wrapper2 = object2;
if (wrapper1.specificity > wrapper2.specificity) {
result = 1;
} else if (wrapper1.specificity < wrapper2.specificity) {
result = -1;
} else if (wrapper1.position > wrapper2.position) {
result = 1;
} else if (wrapper1.position < wrapper2.position) {
result = -1;
}
return result;
}
}
/**
* A comparator for {@link StyleWrapper}s.
*/
public static final StyleWrapperComparator COMPARATOR = new StyleWrapperComparator();
public final CSSStyleDeclaration style;
public final int specificity;
public final int position;
public StyleWrapper(CSSStyleDeclaration style, int specificity,
int position) {
this.style = style;
this.specificity = specificity;
this.position = position;
}
}