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This is Java API for Google Analytics (Measurement Protocol). More information about the protocol is available at https://developers.google.com/analytics/devguides/collection/protocol/v1/.

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package com.brsanthu.googleanalytics;

import static com.brsanthu.googleanalytics.GaUtils.isEmpty;

import java.awt.Dimension;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Toolkit;

/**
 * Clases uses AWT classes to discover following properties.
 * 
 * 	Screen Resolution
 *  Screen Colors
 * 
 * 
 * @author Santhosh Kumar
 */
public class AwtRequestParameterDiscoverer extends DefaultRequestParameterDiscoverer {

	@Override
	public DefaultRequest discoverParameters(GoogleAnalyticsConfig config, DefaultRequest request) {
		super.discoverParameters(config, request);
		
		Toolkit toolkit = Toolkit.getDefaultToolkit();

		if (isEmpty(request.screenResolution())) {
			Dimension screenSize = toolkit.getScreenSize();
			request.screenResolution(((int) screenSize.getWidth()) + "x" + ((int) screenSize.getHeight()) + ", " + toolkit.getScreenResolution() + " dpi");
		}

		if (isEmpty(request.screenColors())) {
			GraphicsEnvironment graphicsEnvironment = GraphicsEnvironment.getLocalGraphicsEnvironment();
			GraphicsDevice[] graphicsDevices = graphicsEnvironment.getScreenDevices();

			StringBuilder sb = new StringBuilder();
			for (GraphicsDevice graphicsDevice : graphicsDevices) {
				if (sb.length() != 0) {
					sb.append(", ");
				}
				sb.append(graphicsDevice.getDisplayMode().getBitDepth());
			}
			request.screenColors(sb.toString());
		}
		
		return request;
	}
}