/*
 * Copyright 2000-2014 Vaadin Ltd.
 *
 * 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 com.vaadin.testbench.customelements;

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

import org.openqa.selenium.WebElement;

import com.vaadin.testbench.By;

/**
 * TestBench element supporting RadioButtonGroup
 *
 * @author Vaadin Ltd
 */

public class RadioButtonGroupElement
        extends com.vaadin.testbench.elements.RadioButtonGroupElement {
    private static org.openqa.selenium.By byButtonSpan = By
            .className("v-select-option");

    /**
     * Return list of the selected options in the radiobutton group
     *
     * @return list of the selected options in the radiobutton group
     */
    public List<String> getSelection() {
        List<String> values = new ArrayList<>();
        List<WebElement> options = findElements(byButtonSpan);
        for (WebElement option : options) {
            WebElement checkedItem;
            checkedItem = option.findElement(By.tagName("input"));
            String checked = checkedItem.getAttribute("checked");
            if (checked != null
                    && checkedItem.getAttribute("checked").equals("true")) {
                values.add(option.findElement(By.tagName("label")).getText());
            }
        }
        return values;
    }

    /**
     * Select option in the radiobutton group with the specified value
     *
     * @param chars
     *            value of the option in the radiobutton group which will be
     *            selected
     */
    public void selectOption(CharSequence chars) throws ReadOnlyException {
        selectByText((String) chars);
    }

    @Override
    public void clear() {
        throw new UnsupportedOperationException(
                "Clear operation is not supported for RadioButtonGroup."
                        + " This operation has no effect on the element.");
    }
}