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package com.jayway.android.robotium.solo;

import java.util.ArrayList;
import junit.framework.Assert;
import android.widget.CompoundButton;
import android.widget.Spinner;
import android.widget.TextView;

/**
 * This class contains various check methods. Examples are: isButtonChecked(),
 * isSpinnerTextSelected.
 * 
 * @author Renas Reda, [email protected]
 * 
 */

class Checker {
	
	private final ViewFetcher viewFetcher;
	
	/**
	 * Constructs this object.
	 * 
	 * @param viewFetcher the {@code ViewFetcher} instance.
	 */
	
	public Checker(ViewFetcher viewFetcher){
		this.viewFetcher = viewFetcher;
	}

	
	/**
	 * Checks if a {@link CompoundButton} with a given index is checked.
	 *
	 * @param expectedClass the expected class, e.g. {@code CheckBox.class} or {@code RadioButton.class}
	 * @param index of the {@code CompoundButton} to check. {@code 0} if only one is available
	 * @return {@code true} if {@code CompoundButton} is checked and {@code false} if it is not checked
	 */
	
	public  boolean isButtonChecked(Class expectedClass, int index)
	{
		ArrayList list = viewFetcher.getCurrentViews(expectedClass);
		if(index < 0 || index > list.size()-1)
			Assert.assertTrue("No " + expectedClass.getSimpleName() + " with index " + index + " is found", false);
		return (list.get(index)).isChecked();
	}
	
	/**
	 * Checks if a {@link CompoundButton} with a given text is checked.
	 *
	 * @param expectedClass the expected class, e.g. {@code CheckBox.class} or {@code RadioButton.class}
	 * @param text the text that is expected to be checked
	 * @return {@code true} if {@code CompoundButton} is checked and {@code false} if it is not checked
	 */
	
	public  boolean isButtonChecked(Class expectedClass, String text)
	{
		ArrayList list = viewFetcher.getCurrentViews(expectedClass);
		for(T button : list){
			if(button.getText().equals(text) && button.isChecked())
				return true;
		}
		return false;
	}
	
	
	/**
	 * Checks if a given text is selected in any {@link Spinner} located on the current screen.
	 * @param text the text that is expected to be selected
	 * @return {@code true} if the given text is selected in any {@code Spinner} and false if it is not
	 * 
	 */
	
	public boolean isSpinnerTextSelected(String text)
	{
		ArrayList spinnerList = viewFetcher.getCurrentViews(Spinner.class);
		for(int i = 0; i < spinnerList.size(); i++){
			if(isSpinnerTextSelected(i, text))
					return true;
		}
		return false;
	}
	
	/**
	 * Checks if a given text is selected in a given {@link Spinner} 
	 * @param spinnerIndex the index of the spinner to check. 0 if only one spinner is available
	 * @param text the text that is expected to be selected
	 * @return true if the given text is selected in the given {@code Spinner} and false if it is not
	 */
	
	public boolean isSpinnerTextSelected(int spinnerIndex, String text)
	{
		ArrayList spinnerList = viewFetcher.getCurrentViews(Spinner.class);
		if(spinnerList.size() < spinnerIndex+1)
			Assert.assertTrue("No spinner with index " + spinnerIndex + " is found! ", false);	
		Spinner spinner = spinnerList.get(spinnerIndex);
		TextView textView = (TextView) spinner.getChildAt(0);
		if(textView.getText().equals(text))
			return true;
		else
			return false;
	}
	
	

}