CarouselControl.java

package org.gwtbootstrap3.client.ui;

/*
 * #%L
 * GwtBootstrap3
 * %%
 * Copyright (C) 2016 GwtBootstrap3
 * %%
 * 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.
 * #L%
 */

import org.gwtbootstrap3.client.ui.base.ComplexWidget;
import org.gwtbootstrap3.client.ui.base.HasHref;
import org.gwtbootstrap3.client.ui.base.helper.StyleHelper;
import org.gwtbootstrap3.client.ui.constants.Attributes;
import org.gwtbootstrap3.client.ui.constants.IconType;
import org.gwtbootstrap3.client.ui.constants.Styles;
import org.gwtbootstrap3.client.ui.html.Span;

import com.google.gwt.dom.client.AnchorElement;
import com.google.gwt.dom.client.Document;
import com.google.gwt.user.client.ui.HasText;

/**
 * @author Joshua Godi
 */
public class CarouselControl extends ComplexWidget implements HasHref, HasText {

    private static final String BUTTON = "button";

    private final AnchorElement anchorElem;
    private final Icon icon;
    private final Span span;

    public CarouselControl() {

        // Anchor
        this.anchorElem = Document.get().createAnchorElement();
        setElement(anchorElem);
        setStyleName(Styles.CAROUSEL_CONTROL);
        anchorElem.setAttribute(Attributes.ROLE, BUTTON);

        // Icon
        icon = new Icon();
        add(icon);

        // Span (SR_ONLY)
        span = new Span();
        span.setStyleName(Styles.SR_ONLY);
        add(span);
    }

    public void setIconType(final IconType iconType) {
        icon.setType(iconType);
    }

    public void setPrev(final boolean prev) {
        getElement().removeAttribute(Attributes.DATA_SLIDE);
        getElement().setAttribute(Attributes.DATA_SLIDE, Carousel.PREV);
        StyleHelper.toggleStyleName(this, prev, Styles.LEFT);
        icon.addStyleName(Styles.ICON_PREV);
    }

    public void setNext(final boolean next) {
        getElement().removeAttribute(Attributes.DATA_SLIDE);
        getElement().setAttribute(Attributes.DATA_SLIDE, Carousel.NEXT);
        StyleHelper.toggleStyleName(this, next, Styles.RIGHT);
        icon.addStyleName(Styles.ICON_NEXT);
    }

    @Override
    public void setHref(String href) {
        anchorElem.setHref(href);
    }

    @Override
    public String getHref() {
        return anchorElem.getHref();
    }

    @Override
    public String getText() {
        return span.getText();
    }

    @Override
    public void setText(String text) {
        span.setText(text);
    }
}