// This code is based on:
//
//   com.thoughtworks.selenium.webdriven.commands.GetAllButtons
//
// in Selenium WebDriver.
//
// The following copyright is copied from original.
// ---
// Licensed to the Software Freedom Conservancy (SFC) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The SFC licenses this file
// to you 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 jp.vmi.selenium.selenese.subcommand;

import jp.vmi.selenium.selenese.Context;
import jp.vmi.selenium.selenese.utils.LangUtils;

/**
 * Re-implementation of GetAllButtons.
 */
public class GetAllButtons extends AbstractSubCommand<String[]> {

    /**
     * Constructor.
     */
    public GetAllButtons() {
        super();
    }

    @Override
    public String[] execute(Context context, String... args) {
        return context.findElements("css=input").stream()
            .filter(elem -> {
                if ("input".equalsIgnoreCase(elem.getTagName())) {
                    String type = elem.getAttribute("type");
                    if (type == null)
                        return false;
                    switch (type.toLowerCase()) {
                    case "button":
                    case "submit":
                    case "reset":
                        return true;
                    default:
                        return false;
                    }
                } else { // button
                    return true;
                }
            })
            .map(elem -> LangUtils.nullToEmpty(elem.getAttribute("id")))
            .toArray(String[]::new);
    }
}