package timeflow.views;

import javax.swing.*;

import timeflow.data.db.ActDB;
import timeflow.model.*;

import java.awt.*;

// superclass of all timeline views
public abstract class AbstractView extends ModelPanel
{

        protected boolean ignoreEventsWhenInvisible = true;
        JPanel panel;
        ActDB lastDrawn, lastNotified;

        public AbstractView(TFModel model)
        {
                super(model);
        }

        public void paintComponent(Graphics g)
        {
                g.drawString(getName(), 10, 30);
        }

        public final JComponent getControls()
        {
                if (panel != null)
                {
                        return panel;
                }

                panel = new JPanel();
                panel.setLayout(new BorderLayout());
                panel.add(_getControls(), BorderLayout.CENTER);
                JLabel controlLabel = new JLabel(" " + getName() + " Controls")
                {

                        public Dimension getPreferredSize()
                        {
                                return new Dimension(30, 30);
                        }
                };
                controlLabel.setBackground(Color.lightGray);
                controlLabel.setForeground(Color.darkGray);
                panel.add(controlLabel, BorderLayout.NORTH);

                return panel;
        }

        protected JComponent _getControls()
        {
                return new JLabel("local: " + getName());
        }

        public abstract String getName();

        protected abstract void _note(TFEvent e);

        protected abstract void onscreen(boolean majorChangeHappened);

        @Override
        public final void note(TFEvent e)
        {
                lastNotified = getModel().getDB();
                if (isVisible() || !ignoreEventsWhenInvisible)
                {
                        _note(e);
                        lastDrawn = lastNotified;
                }
        }

        @Override
        public void setVisible(boolean visible)
        {
                super.setVisible(visible);
                if (visible && getModel().getDB() != null)
                {
                        onscreen(lastDrawn != lastNotified);
                        lastDrawn = lastNotified;
                }
        }
}