/*
 * Copyright 2011 JBoss 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
 *
 *      http://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.jbpm.formapi.common.panels;

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

import com.google.gwt.dom.client.Document;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.LIElement;
import com.google.gwt.dom.client.Node;
import com.google.gwt.dom.client.UListElement;
import com.google.gwt.user.client.ui.Focusable;
import com.google.gwt.user.client.ui.Widget;

public class ListWidget extends Widget implements Focusable {

    private final UListElement element = Document.get().createULElement();

    public ListWidget() {
        setElement(element);
    }

    public void addItem(String item) {
        LIElement liElem = Document.get().createLIElement();
        liElem.setInnerHTML(item);
        element.appendChild(liElem);
    }

    public List<String> getItems() {
        List<String> items = new ArrayList<String>();
        for (int index = 0; index < element.getChildCount(); index++) {
            Element elem = Element.as(element.getChild(index));
            items.add(elem.getInnerHTML());
        }
        return items;
    }

    public void removeItem(String item) {
        int index = 0;
        for (; index < element.getChildCount(); index++) {
            Node child = element.getChild(index);
            Element elemChild = Element.as(child);
            String elemHTML = elemChild.getInnerHTML();
            if (elemHTML != null && elemHTML.equals(item)) {
                removeItem(index);
                break;
            }
        }
    }

    public void removeItem(int index) {
        if (index < element.getChildCount()) {
            element.removeChild(element.getChild(index));
        }
    }

    public void setScrollTop(int scrollTop) {
        element.setScrollTop(scrollTop);
    }

    public int getScrollTop() {
        return element.getScrollTop();
    }

    public void setId(String id) {
        element.setId(id);
    }

    public String getId() {
        return element.getId();
    }

    public void setScrollLeft(int scrollLeft) {
        element.setScrollLeft(scrollLeft);
    }

    public int getScrollLeft() {
        return element.getScrollLeft();
    }

    public void setDir(String dir) {
        element.setDir(dir);
    }

    public String getDir() {
        return element.getDir();
    }

    @Override
    public int getTabIndex() {
        return element.getTabIndex();
    }

    @Override
    public void setTabIndex(int index) {
        element.setTabIndex(index);
    }

    @Override
    public void setAccessKey(char key) {
        setAccessKey(element, key);
    }

    public native void setAccessKey(Element elem, char key) /*-{
        elem.accessKey = String.fromCharCode(key);
    }-*/;

    @Override
    public void setFocus(boolean focused) {
        if (focused) {
            element.focus();
        } else {
            element.blur();
        }
    }
}