org.htmlunit.javascript.host.css.CSSRuleList Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of xlt Show documentation
XLT (Xceptance LoadTest) is an extensive load and performance test tool developed and maintained by Xceptance.
There is a newer version: 8.6.0
/*
 * Copyright (c) 2002-2024 Gargoyle Software Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.htmlunit.javascript.host.css;

import static org.htmlunit.BrowserVersionFeatures.JS_CSSRULELIST_ENUM_ITEM_LENGTH;
import static org.htmlunit.javascript.configuration.SupportedBrowser.CHROME;
import static org.htmlunit.javascript.configuration.SupportedBrowser.EDGE;
import static org.htmlunit.javascript.configuration.SupportedBrowser.FF;
import static org.htmlunit.javascript.configuration.SupportedBrowser.FF_ESR;

import java.util.ArrayList;
import java.util.List;

import org.htmlunit.corejs.javascript.Scriptable;
import org.htmlunit.javascript.HtmlUnitScriptable;
import org.htmlunit.javascript.JavaScriptEngine;
import org.htmlunit.javascript.configuration.JsxClass;
import org.htmlunit.javascript.configuration.JsxConstructor;
import org.htmlunit.javascript.configuration.JsxFunction;
import org.htmlunit.javascript.configuration.JsxGetter;

/**
 * A JavaScript object for {@code CSSRuleList}.
 *
 * @author Ahmed Ashour
 * @author Ronald Brill
 * @author Frank Danek
 * @see MDN doc
 */
@JsxClass
public class CSSRuleList extends HtmlUnitScriptable {

    private final List rules_ = new ArrayList<>();

    /**
     * Creates a new instance.
     */
    public CSSRuleList() {
    }

    /**
     * Creates an instance.
     */
    @JsxConstructor({CHROME, EDGE, FF, FF_ESR})
    public void jsConstructor() {
        throw JavaScriptEngine.reportRuntimeError("Illegal constructor.");
    }

    /**
     * Creates a new instance.
     * @param stylesheet the stylesheet
     */
    public CSSRuleList(final CSSStyleSheet stylesheet) {
        setParentScope(stylesheet.getParentScope());
        setPrototype(getPrototype(getClass()));
    }

    /**
     * Creates a new instance.
     * @param groupingRule the grouping rule
     */
    public CSSRuleList(final CSSGroupingRule groupingRule) {
        setParentScope(groupingRule.getParentScope());
        setPrototype(getPrototype(getClass()));
    }

    /**
     * Add a rule.
     * @param rule the rule to add
     */
    protected void addRule(final CSSRule rule) {
        rules_.add(rule);
    }

    /**
     * Clear the listOfRules.
     */
    protected void clearRules() {
        rules_.clear();
    }

    /**
     * Returns the length of this list.
     * @return the length of this list.
     */
    @JsxGetter
    public int getLength() {
        return rules_.size();
    }

    /**
     * Returns the item in the given index.
     * @param index the index
     * @return the item in the given index
     */
    @JsxFunction
    public Object item(final int index) {
        return get(index, this);
    }

    /**
     * {@inheritDoc}.
     */
    @Override
    public Object[] getIds() {
        final List idList = new ArrayList<>();

        final int length = getLength();
        for (int i = 0; i < length; i++) {
            idList.add(Integer.toString(i));
        }

        if (getBrowserVersion().hasFeature(JS_CSSRULELIST_ENUM_ITEM_LENGTH)) {
            idList.add("item");
            idList.add("length");
        }
        else {
            idList.add("length");
            idList.add("item");
        }
        return idList.toArray();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean has(final int index, final Scriptable start) {
        return index >= 0 && index < getLength();
    }

    /**
     * {@inheritDoc}.
     */
    @Override
    public boolean has(final String name, final Scriptable start) {
        if ("length".equals(name) || "item".equals(name)) {
            return true;
        }
        try {
            return has(Integer.parseInt(name), start);
        }
        catch (final Exception e) {
            //ignore
        }
        return false;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Object get(final int index, final Scriptable start) {
        if (index < 0 || getLength() <= index) {
            return NOT_FOUND;
        }
        return rules_.get(index);
    }

}