A Domain Specific Language for Android touch events: Part 1: Description and usage of the DSL

package com.hfk.android.gestures;

import android.view.View;

//import com.hfk.android.AndroidGestureDSLView;
import com.hfk.android.ScreenVector;

public class CheckRelationDistanceOfRegisteredPointCondition implements IGestureCondition /*extends GestureConditionBase<View>*/ {

	public CheckRelationDistanceOfRegisteredPointCondition(/*View view,*/ RelationType relationType, int rangeValue, String key) {
		//super(view);
		
		this.relationType = relationType;
		this.range = rangeValue;
		this.dataKey = key;
	}
	
	@Override
	public boolean checkCondition(GestureEvent motion, TouchGesture gesture) {
		ScreenVector actionDown = (ScreenVector)gesture.getContext(dataKey);
		if(actionDown != null)
		{
			long timeStamp = motion.getTime(); 
			String message = "Distance: " 
					+ ((Integer)(actionDown.distance(motion.getPosition()))).toString()
					+ "<="
					+ ((Integer)range).toString();
			//((AndroidGestureDSLView)getTouchedView()).drawMessage(message);
			
			switch(relationType)
			{
			case Equal:
				return (int)(actionDown.distance(motion.getPosition())) == range;
			case Within:
				return (int)(actionDown.distance(motion.getPosition())) <= range;
			case Exceed:
				return (int)(actionDown.distance(motion.getPosition())) >= range;
			}
		}

		return true;
	}

	private RelationType relationType;
	private int range;
	private String dataKey;
}