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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.form;

import java.util.LinkedList;

import com.vaadin.icons.VaadinIcons;
import com.vaadin.ui.Button;
import com.vaadin.ui.Component;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.TabSheet;
import com.vaadin.ui.VerticalLayout;

import de.mhus.lib.core.config.IConfig;
import de.mhus.lib.errors.MException;
import de.mhus.lib.form.ComponentAdapter;
import de.mhus.lib.form.ComponentDefinition;
import de.mhus.lib.form.DataSource;
import de.mhus.lib.form.UiComponent;

public class UiLayoutWizard extends UiLayout {

	private static final long serialVersionUID = 1L;
	private TabSheet layout;
	private LinkedList tabIndex = new LinkedList<>();
	
	public UiLayoutWizard() {
		this.layout = new TabSheet();
//		layout.setSizeFull();
		layout.setWidth("100%");
	}
	
	@Override
	public void createRow(final UiVaadin c) {
		
		tabIndex.add(c);
		final int current = tabIndex.size();
		
		//String name = c.getName();
		Component editor = c.createEditor();
		DataSource ds = getForm().getDataSource();
		String caption = c.getCaption(ds);
		
		VerticalLayout iEditor = new VerticalLayout();
		iEditor.addComponent(editor);
		iEditor.setExpandRatio(editor, 1);
		
		HorizontalLayout toolBar = new HorizontalLayout();
		Button bBack = new Button(VaadinIcons.ARROW_LEFT);
		bBack.addClickListener(e -> {
			if (current < 1) return;
			layout.setSelectedTab(current-2);
		});
		toolBar.addComponent(bBack);
		toolBar.setExpandRatio(bBack, 0);
		
		Label spacer = new Label();
		toolBar.addComponent(spacer);
		toolBar.setExpandRatio(spacer, 1);
		
		Button bNext = new Button(VaadinIcons.ARROW_RIGHT);
		bNext.addClickListener(e -> {
			if (current >= tabIndex.size()) return;
			layout.setSelectedTab(current);
		});
		toolBar.addComponent(bNext);
		toolBar.setExpandRatio(bNext, 0);
		
		toolBar.setWidth("100%");
		iEditor.addComponent(toolBar);
		iEditor.setExpandRatio(toolBar, 0);

		iEditor.setSizeFull();
		
		layout.addTab(iEditor, caption);
	}
	
	@Override
	public void doRevert() throws MException {
		
		for (UiVaadin entry : tabIndex)
			try {
				entry.doRevert();
			} catch (Throwable e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		
		super.doRevert();
	}

	@Override
	public Component getComponent() {
		return layout;
	}

	public static class Adapter implements ComponentAdapter {

		@Override
		public UiComponent createAdapter(IConfig config) {
			return new UiLayoutWizard();
		}

		@Override
		public ComponentDefinition getDefinition() {
			// TODO Auto-generated method stub
			return null;
		}
		
	}
	
}