package Classes.css.core.rule;

import java.util.ArrayList;

import Classes.css.core.Rule;
import javafx.geometry.Insets;
import javafx.scene.Node;
import javafx.scene.layout.Region;

public class Padding extends Rule{	
	
	/* Attributes */
	private Integer top;
	private Integer right;
	private Integer bottom;
	private Integer left;
	
	
	/* Constructor -> Dispatch attributes */
	public Padding(Object[] r_side) throws Exception{
		
		
		/* (1) Initialization
		------------------------------------------*/
		/* (1) Initialize values */
		this.top    = null;
		this.left   = null;
		this.bottom = null;
		this.right  = null;
		
		/* (2) Cast Object[] to ArrayList<Integer> */
		ArrayList<Integer>_r_side = this.auto_cast(r_side);

		
		
		/* (2) Manage/store values
		------------------------------------------*/
		switch(r_side.length){
		
			/* (1) If 4 -> (top, right, bottom, left) */
			case 4:
				this.top    = _r_side.get(0);
				this.right  = _r_side.get(1);
				this.bottom = _r_side.get(2);
				this.left   = _r_side.get(3);
				break;
				
			/* (2) If 3 -> (top, right+left, bottom) */
			case 3:
				this.top    = _r_side.get(0);
				this.right  = _r_side.get(1);
				this.left   = _r_side.get(1);
				this.bottom = _r_side.get(2);
				break;
				
			/* (3) If 2 -> (top+botton, right+left) */
			case 2:
				this.top    = _r_side.get(0);
				this.bottom = _r_side.get(0);
				this.right  = _r_side.get(1);
				this.left   = _r_side.get(1);
				break;
				
			/* (4) If 1 -> (top+botton+right+left) */
			case 1:
				this.top    = _r_side.get(0);
				this.bottom = _r_side.get(0);
				this.right  = _r_side.get(0);
				this.left   = _r_side.get(0);
				break;
		
		}
			
	}

	
	
	public void apply(Node target){
		
		/* (1) Set padding inset */
		Insets pad_inset = new Insets(this.top, this.right, this.bottom, this.left);
		
		/* (2) Apply to target */
		Region _target = (Region) target;
		_target.setPadding(pad_inset);
		
	}
	
	
	
	
	
	/* Cast from Object[] to Integer[] */
	private ArrayList<Integer> auto_cast(Object[] cast_in) throws Exception{
		
		/* (1) Init. output */
		ArrayList<Integer> cast_out = new ArrayList<Integer>();
		
		/* (2) Parse input to try to parse values */
		for( Object obj_in : cast_in )
			cast_out.add( Integer.valueOf(obj_in.toString()) );
		
		/* (3) Return casted array */
		return cast_out;
	}



	@Override
	public String toString() {
		return "padding: "+this.top+" "+this.right+" "+this.bottom+" "+this.left+";";
	}


}