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/**
 * Copyright 2018 Mike Hummel
 *
 * 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 de.mhus.lib.vaadin.ui;

import java.util.Map;
import java.util.Map.Entry;

import com.vaadin.icons.VaadinIcons;
import com.vaadin.server.FontAwesome;
import com.vaadin.ui.Alignment;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.MenuBar;
import com.vaadin.ui.MenuBar.Command;
import com.vaadin.ui.MenuBar.MenuItem;
import com.vaadin.ui.HorizontalLayout;

import de.mhus.lib.core.MString;

@SuppressWarnings("deprecation")
public class HelpNavigation extends HorizontalLayout {
	
	private static final long serialVersionUID = 1L;

	public HelpNavigation(Map commands, String helpUrl) {
		
		if (commands != null && !commands.isEmpty()) {
			MenuBar menuBar = new MenuBar();
			MenuItem menu = menuBar.addItem("Menü", null);
			menu.setIcon(FontAwesome.NAVICON);
			for (Entry entry : commands.entrySet()) {
				menu.addItem(entry.getKey(), entry.getValue());
			}
			addComponent(menuBar);
			setComponentAlignment(menuBar, Alignment.MIDDLE_CENTER);
		}
		
		if (MString.isSetTrim(helpUrl)) {
			Button helpBtn = new Button("Hilfe");
			helpBtn.setIcon(VaadinIcons.QUESTION);
			helpBtn.setDescription("Hier klicken, um Hilfe zu erhalten");
			helpBtn.addClickListener(new Button.ClickListener() {
				private static final long serialVersionUID = 1L;
				@Override
				public void buttonClick(ClickEvent event) {
					getUI().getPage().open(helpUrl, "_blank", false);
				}
			});
			addComponent(helpBtn);
			setComponentAlignment(helpBtn, Alignment.MIDDLE_CENTER);
		}
		
		setHeight(100, Unit.PERCENTAGE);
		setSpacing(true);
	}
}