package jfxtras.scene.control;

import java.util.ArrayList;
import java.util.Calendar;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javafx.beans.property.BooleanProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.geometry.Pos;
import javafx.scene.control.Label;
import javafx.scene.control.ToggleButton;
import javafx.scene.layout.ColumnConstraints;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.Priority;

/**
 * This skin uses regular JavaFX controls
 * @author Tom Eugelink
 *
 */
public class CalendarPickerXControlSkin2 extends CalendarPickerXMonthlySkinAbstract<CalendarPickerXControlSkin2>
{
	// ==================================================================================================================
	// CONSTRUCTOR
	
	/**
	 * 
	 */
	public CalendarPickerXControlSkin2(CalendarPickerX control)
	{
		super(control);

		// setup component
		createNodes();
		
		// update the data
		refreshDayButtons();
	}
	
	// ==================================================================================================================
	// PROPERTIES
	

	// ==================================================================================================================
	// DRAW
	
	/**
	 * construct the nodes
	 */
	private void createNodes()
	{
		// the result
		GridPane lGridPane = new GridPane();
		lGridPane.setVgap(2.0);
		lGridPane.setHgap(2.0);
		
		// setup the grid so all weekday togglebuttons will grow, but the weeknumbers do not
		ColumnConstraints lColumnConstraintsAlwaysGrow = new ColumnConstraints();
		lColumnConstraintsAlwaysGrow.setHgrow(Priority.ALWAYS);
		ColumnConstraints lColumnConstraintsNeverGrow = new ColumnConstraints();
		lColumnConstraintsNeverGrow.setHgrow(Priority.NEVER);
		lGridPane.getColumnConstraints().addAll(lColumnConstraintsNeverGrow, lColumnConstraintsAlwaysGrow, lColumnConstraintsAlwaysGrow, lColumnConstraintsAlwaysGrow, lColumnConstraintsAlwaysGrow, lColumnConstraintsAlwaysGrow, lColumnConstraintsAlwaysGrow, lColumnConstraintsAlwaysGrow);

		// year spinner
		yearXSpinner = new SpinnerX<Integer>(SpinnerXDataProviderFactory.integerRange(), Calendar.getInstance().get(Calendar.YEAR));
		// if the value changed, update the displayed calendar
		yearXSpinner.valueProperty().addListener(new ChangeListener()
		{
			@Override
			public void changed(ObservableValue arg0, Object arg1, Object arg2)
			{
				setDisplayedCalendarFromSpinners();
			}
		});
		lGridPane.add(yearXSpinner, 4, 0, 4, 1); // col, row, hspan, vspan
		
		// setup: 6 rows of 7 days per week (which is the maximum number of buttons required in the worst case layout)
		for (int i = 0; i < 6 * 7; i++)
		{
			// create buttons
			ToggleButton lToggleButton = new ToggleButton("" + i);
			
			// add it
			lGridPane.add(lToggleButton, (i % 7) + 1, (i / 7) + 2);  // col, row
			lToggleButton.setMaxWidth(Double.MAX_VALUE); // make the button grow to fill a GridPane's cell
			lToggleButton.setAlignment(Pos.BASELINE_CENTER); // CULPRIT!!! <--------------------------------------------------------------
			
			// remember it
			dayButtons.add(lToggleButton);
		}

		// add to self
		this.getStyleClass().add(this.getClass().getSimpleName()); // always add self as style class, because CSS should relate to the skin not the control
		getChildren().add(lGridPane);
	}
	private SpinnerX<Integer> yearXSpinner = null;
	final private List<ToggleButton> dayButtons = new ArrayList<ToggleButton>();

	/*
	 * 
	 */
	private void setDisplayedCalendarFromSpinners()
	{
		// get spinner values
		int lYear = yearXSpinner.getValue().intValue();
		int lMonth = 7;
		
		// get new calendar to display
		Calendar lCalendar = (Calendar)getDisplayedCalendar().clone();
		lCalendar.set(Calendar.YEAR, lYear);
		lCalendar.set(Calendar.MONTH, lMonth);
		
		// set it
		setDisplayedCalendar(lCalendar);
		refreshDayButtons();
	}
	
	
	/*
	 * 
	 */
	private void refreshDayButtons()
	{
		// setup the buttons [0..(6*7)-1]
		// displayed calendar always points to the 1st of the month
		int lFirstOfMonthIdx = determineFirstOfMonthDayOfWeek();

		// set the month buttons
		int lDaysInMonth = determineDaysInMonth();
		Calendar lCalendar = (Calendar)getDisplayedCalendar().clone();
		for (int i = 1; i <= lDaysInMonth; i++)
		{
			// set the date
			lCalendar.set(java.util.Calendar.DATE, i);

			// determine the index in the buttons
			int lIdx = lFirstOfMonthIdx + i - 1;

			// update the button
			ToggleButton lToggleButton = dayButtons.get(lIdx); 
			lToggleButton.setText("" + i);
		}
	}
}