package org.leumasjaffe.recipe.view;

import javax.swing.JPanel;
import javax.swing.JScrollPane;

import org.leumasjaffe.observer.ForwardingObservableListener;
import org.leumasjaffe.observer.ObserverDispatch;
import org.leumasjaffe.recipe.model.Phase;
import org.leumasjaffe.recipe.model.Element;

import lombok.AccessLevel;
import lombok.experimental.FieldDefaults;

import org.jdesktop.swingx.VerticalLayout;

import javax.swing.JSeparator;
import javax.swing.ScrollPaneConstants;

import java.awt.GridBagLayout;
import javax.swing.JLabel;
import java.awt.GridBagConstraints;
import java.awt.Insets;
import java.awt.Component;
import java.awt.Dimension;

import javax.swing.Box;

@SuppressWarnings("serial")
@FieldDefaults(level=AccessLevel.PRIVATE, makeFinal=true)
public class ElementPanel extends JScrollPane {
	JPanel panelViewPort;
	ForwardingObservableListener<Element> listener = new ForwardingObservableListener<>();

	public ElementPanel(Element element) {
		setPreferredSize(new Dimension(500, 450));

		setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
		setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);

		JPanel panelColumnHeader = new JPanel();
		setColumnHeaderView(panelColumnHeader);
		GridBagLayout gbl_panelColumnHeader = new GridBagLayout();
		gbl_panelColumnHeader.columnWidths = new int[]{0, 0, 0, 0};
		gbl_panelColumnHeader.rowHeights = new int[]{0, 0};
		gbl_panelColumnHeader.columnWeights = new double[]{0.0, 1.0, 0.0, Double.MIN_VALUE};
		gbl_panelColumnHeader.rowWeights = new double[]{0.0, Double.MIN_VALUE};
		panelColumnHeader.setLayout(gbl_panelColumnHeader);
		
		JLabel lblName = new JLabel(element.getName());
		GridBagConstraints gbc_lblName = new GridBagConstraints();
		gbc_lblName.insets = new Insets(0, 0, 0, 5);
		gbc_lblName.gridx = 0;
		gbc_lblName.gridy = 0;
		panelColumnHeader.add(lblName, gbc_lblName);
		
		Component horizontalGlue = Box.createHorizontalGlue();
		GridBagConstraints gbc_horizontalGlue = new GridBagConstraints();
		gbc_horizontalGlue.insets = new Insets(0, 0, 0, 5);
		gbc_horizontalGlue.gridx = 1;
		gbc_horizontalGlue.gridy = 0;
		panelColumnHeader.add(horizontalGlue, gbc_horizontalGlue);
		
		CollatedDurationPanel panelDuration =
				new CollatedDurationPanel(element.getCollatedDuration());
		GridBagConstraints gbc_panelDuration = new GridBagConstraints();
		gbc_panelDuration.gridx = 2;
		gbc_panelDuration.gridy = 0;
		panelColumnHeader.add(panelDuration, gbc_panelDuration);

		panelViewPort = new JPanel();
		setViewportView(panelViewPort);
		panelViewPort.setLayout(new VerticalLayout(5));
				
		for (final Phase phase : element.getPhases()) {
			panelViewPort.add(new PhasePanel(phase));
			panelViewPort.add(new JSeparator());
		}
		
		listener.setObserved(element, element.getPhases());
	}
	
	@Override
	public void removeNotify() {
		super.removeNotify();
		ObserverDispatch.unsubscribeAll(listener);
	}
}