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/*
 *  Copyright 2023 Red Hat
 *
 *  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.patternfly.component.list;

import java.util.HashMap;
import java.util.Map;

import org.jboss.elemento.Id;
import org.patternfly.component.ComponentType;
import org.patternfly.component.WithIcon;
import org.patternfly.component.WithIdentifier;
import org.patternfly.component.WithText;
import org.patternfly.core.ComponentContext;
import org.patternfly.core.Dataset;

import elemental2.dom.Element;
import elemental2.dom.HTMLElement;
import elemental2.dom.HTMLLIElement;

import static org.jboss.elemento.Elements.failSafeRemoveFromParent;
import static org.jboss.elemento.Elements.insertFirst;
import static org.jboss.elemento.Elements.li;
import static org.jboss.elemento.Elements.span;
import static org.patternfly.style.Classes.component;
import static org.patternfly.style.Classes.icon;
import static org.patternfly.style.Classes.item;
import static org.patternfly.style.Classes.list;

public class ListItem extends ListSubComponent implements
        ComponentContext,
        WithIdentifier,
        WithText,
        WithIcon {

    // ------------------------------------------------------ factory

    public static ListItem listItem() {
        return new ListItem(Id.unique(ComponentType.List.id, SUB_COMPONENT_NAME));
    }

    public static ListItem listItem(String identifier) {
        return new ListItem(identifier);
    }

    // ------------------------------------------------------ instance

    static final String SUB_COMPONENT_NAME = "li";
    private final String identifier;
    private final Map data;
    private HTMLElement iconContainer;

    ListItem(String identifier) {
        super(SUB_COMPONENT_NAME, li().data(Dataset.identifier, identifier).element());
        this.identifier = identifier;
        this.data = new HashMap<>();
    }

    // ------------------------------------------------------ builder

    @Override
    public ListItem icon(Element icon) {
        classList().add(component(list, item));
        failSafeIconContainer().appendChild(icon);
        return this;
    }

    @Override
    public ListItem removeIcon() {
        classList().remove(component(list, item));
        failSafeRemoveFromParent(failSafeIconContainer());
        iconContainer = null;
        return this;
    }

    @Override
    public ListItem text(String text) {
        return textNode(text);
    }

    @Override
    public  ListItem store(String key, T value) {
        data.put(key, value);
        return this;
    }

    @Override
    public ListItem that() {
        return this;
    }

    // ------------------------------------------------------ api


    @Override
    public String identifier() {
        return identifier;
    }

    @Override
    public boolean has(String key) {
        return data.containsKey(key);
    }

    @SuppressWarnings("unchecked")
    public  T get(String key) {
        if (data.containsKey(key)) {
            return (T) data.get(key);
        }
        return null;
    }

    // ------------------------------------------------------ internal

    private HTMLElement failSafeIconContainer() {
        if (iconContainer == null) {
            insertFirst(element(), iconContainer = span().css(component(list, item, icon)).element());
        }
        return iconContainer;
    }
}