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/*
* Copyright (c) 2008, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package javafx.css;
import com.sun.javafx.css.Combinator;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
/**
* Used by CSSRule to determine whether or not the selector applies to a
* given object.
*
* @since 9
*/
abstract public class Selector {
private static class UniversalSelector {
private static final Selector INSTANCE =
new SimpleSelector("*", null, null, null);
}
static Selector getUniversalSelector() {
return UniversalSelector.INSTANCE;
}
private Rule rule;
void setRule(Rule rule) {
this.rule = rule;
}
public Rule getRule() {
return rule;
}
private int ordinal = -1;
public void setOrdinal(int ordinal) {
this.ordinal = ordinal;
}
public int getOrdinal() {
return ordinal;
}
public abstract Match createMatch();
// same as the matches method expect return true/false rather than a match
public abstract boolean applies(Styleable styleable);
// same as applies, but will return pseudoclass state that it finds along the way
public abstract boolean applies(Styleable styleable, Set[] triggerStates, int bit);
/**
* Determines whether the current state of the node and its parents
* matches the pseudo-classes defined (if any) for this selector.
* @param styleable the styleable
* @param state the state
* @return {@code true} if the current state of the node and its parents
* matches the pseudo-classes defined (if any) for this selector
*/
public abstract boolean stateMatches(Styleable styleable, Set state);
private static final int TYPE_SIMPLE = 1;
private static final int TYPE_COMPOUND = 2;
protected void writeBinary(DataOutputStream os, StyleConverter.StringStore stringStore)
throws IOException {
if (this instanceof SimpleSelector) {
os.writeByte(TYPE_SIMPLE);
} else {
os.writeByte(TYPE_COMPOUND);
}
}
static Selector readBinary(int bssVersion, DataInputStream is, String[] strings)
throws IOException {
final int type = is.readByte();
if (type == TYPE_SIMPLE)
return SimpleSelector.readBinary(bssVersion, is,strings);
else
return CompoundSelector.readBinary(bssVersion, is,strings);
}
public static Selector createSelector(final String cssSelector) {
if (cssSelector == null || cssSelector.length() == 0) {
return null; // actually return a default no-match selector
}
// A very primitive parser
List selectors = new ArrayList();
List combinators = new ArrayList();
List parts = new ArrayList();
int start = 0;
int end = -1;
char combinator = '\0';
for (int i=0; i') {
if (combinator == '\0') end = i;
combinator = ch;
} else if (combinator != '\0'){
parts.add(cssSelector.substring(start, end));
start = i;
combinators.add(combinator == ' ' ? Combinator.DESCENDANT : Combinator.CHILD);
combinator = '\0';
}
}
parts.add(cssSelector.substring(start));
for (int i=0; i pseudoClasses = new ArrayList();
for (int j=1; j styleClasses = new ArrayList();
// If the first one is an empty string, then it started with a pseudo class
// If the first one starts with a #, it was an id
// Otherwise, it was a name
for (int j=1; j
