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();

 	}

 }