package ru.indvdum.mywork.vaadin;

import static ru.indvdum.mywork.MyWork.EM;

import ru.indvdum.mywork.openjpa.model.Task;

import com.vaadin.ui.Alignment;

import com.vaadin.ui.Button;

import com.vaadin.ui.HorizontalLayout;

import com.vaadin.ui.Label;

import com.vaadin.ui.RichTextArea;

import com.vaadin.ui.TextField;

import com.vaadin.ui.VerticalLayout;

import com.vaadin.ui.Window;

import com.vaadin.ui.Button.ClickEvent;

import com.vaadin.ui.Button.ClickListener;

public class EditTaskDialog extends Window implements ClickListener {

	private MyWorkApplication myApp = null;

	private EditState state = null;

	private Task task = null;

	private TextField taskName = null;

	private RichTextArea taskDescription = null;

	public EditTaskDialog(MyWorkApplication myApp, EditState state, Task task) throws Exception {

		super();

		this.myApp = myApp;

		this.state = state;

		switch(state){

		case CREATE:

			setCaption("Creating new task");

			if(task != null)

				throw new Exception("Illegal argument: task must be null in creating state.");

			task = new Task();

			task.setName("");

			task.setDescription("");

			this.task = task;

			break;

		case EDIT:

			setCaption("Editing task");

			if(task == null)

				throw new Exception("Illegal argument: task must be not null in editing state.");

			this.task = task;

			break;

		}

		init();

	}

	private void init(){

		setModal(true);

		setWidth("640px");

		setHeight("480px");

		VerticalLayout vl = new VerticalLayout();

		vl.setSizeFull();

		vl.setSpacing(true);

		vl.setMargin(true);

		setContent(vl);

		HorizontalLayout hlName = new HorizontalLayout();

		hlName.setWidth("100%");

		Label lblName = new Label("Name:");

		lblName.setWidth("100%");

		hlName.addComponent(lblName);

		hlName.setExpandRatio(lblName, 1f);

		taskName = new TextField();

		taskName.setWidth("100%");

		taskName.setValue(task.getName());

		hlName.addComponent(taskName);

		hlName.setExpandRatio(taskName, 5f);

		vl.addComponent(hlName);

		taskDescription = new RichTextArea("Description");

		taskDescription.setValue(task.getDescription());

		taskDescription.setSizeFull();

		vl.addComponent(taskDescription);

		vl.setExpandRatio(taskDescription, 1f);

		HorizontalLayout hlOk = new HorizontalLayout();

		hlOk.setWidth("100%");

		Button okButton = new Button();

		switch(state){

		case CREATE:

			okButton.setCaption("Create");

			break;

		case EDIT:

			okButton.setCaption("Save");

			break;

		}

		okButton.addListener((ClickListener)this);

		hlOk.addComponent(okButton);

		hlOk.setComponentAlignment(okButton, Alignment.MIDDLE_RIGHT);

		vl.addComponent(hlOk);

	}

	@Override

	public void buttonClick(ClickEvent event) {

		task.setName(taskName.getValue().toString());

		task.setDescription(taskDescription.getValue().toString());

		try{

			EM.getTransaction().begin();

			EM.persist(task);

			EM.getTransaction().commit();

		} finally {

			if(EM.getTransaction().isActive())

				EM.getTransaction().rollback();

		}

		getParent().removeWindow(this);

		myApp.getTaskTable().requestRepaint();

	}

}