MasterItem.java

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/*
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 * Copyright (c) 2011, Willow Garage, Inc.
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package com.github.rosjava.android_remocons.robot_remocon;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.ColorMatrix;
import android.graphics.ColorMatrixColorFilter;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.TextView;
import com.github.rosjava.android_apps.application_management.WifiChecker;
import com.github.rosjava.android_apps.application_management.ControlChecker;
import com.github.rosjava.android_apps.application_management.MasterChecker;
import com.github.rosjava.android_apps.application_management.RobotDescription;
import android.net.wifi.WifiManager;

import org.jboss.netty.buffer.ChannelBuffer;

public class MasterItem implements MasterChecker.RobotDescriptionReceiver,
                                   MasterChecker.FailureHandler,
                                   ControlChecker.SuccessHandler,
                                   ControlChecker.FailureHandler {
  private ControlChecker controlChecker;
  private MasterChecker checker;
  private View view;
  private RobotDescription description;
  private RobotMasterChooser parentMca;
  private String errorReason;
  private boolean control;
  public MasterItem(RobotDescription robotDescription, RobotMasterChooser parentMca) {
    errorReason = "";
    this.parentMca = parentMca;
    this.description = robotDescription;
    this.description.setConnectionStatus(RobotDescription.CONNECTING);
    if (WifiChecker.wifiValid(this.description.getRobotId(), 
                        (WifiManager)parentMca.getSystemService(parentMca.WIFI_SERVICE))) {
      checker = new MasterChecker(this, this);
      if (this.description.getRobotId().getControlUri() != null) {
        control = true;
        controlChecker = new ControlChecker(this, this);
        controlChecker.beginChecking(this.description.getRobotId());
      } else {
        control = false;
        checker.beginChecking(this.description.getRobotId());
      }
    } else {
      errorReason = "Wrong WiFi Network";
      description.setConnectionStatus(RobotDescription.WIFI);
      safePopulateView();
    }
  }
  public boolean isOk() {
    return this.description.getConnectionStatus().equals(RobotDescription.OK);
  }
  @Override
  public void handleSuccess() {
    control = false;
    checker.beginChecking(this.description.getRobotId());
  }
  @Override
  public void receive(RobotDescription robotDescription) {
    description.copyFrom(robotDescription);
    safePopulateView();
  }
  @Override
  public void handleFailure(String reason) {
    errorReason = reason;
    description.setConnectionStatus(control ? RobotDescription.CONTROL : RobotDescription.ERROR);
    safePopulateView();
  }
  public View getView(Context context, View convert_view, ViewGroup parent) {
    LayoutInflater inflater = (LayoutInflater) context
        .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    // Using convert_view here seems to cause the wrong view to show
    // up sometimes, so I'm always making new ones.
    view = inflater.inflate(R.layout.master_item, null);
    populateView();
    return view;
  }
  private void safePopulateView() {
    if (view != null) {
      final RobotMasterChooser mca = parentMca;
      view.post(new Runnable() {
        @Override
        public void run() {
          populateView();
          mca.writeRobotList();
        }
      });
    }
  }
  
  private void populateView() {
    Log.i("MasterItem", "connection status = " + description.getConnectionStatus());
    boolean isOk = description.getConnectionStatus().equals(RobotDescription.OK);
    boolean isUnavailable = description.getConnectionStatus().equals(RobotDescription.UNAVAILABLE);
    boolean isControl = description.getConnectionStatus().equals(RobotDescription.CONTROL);
    boolean isWifi = description.getConnectionStatus().equals(RobotDescription.WIFI);
    boolean isError = description.getConnectionStatus().equals(RobotDescription.ERROR);
    boolean isConnecting = description.getConnectionStatus().equals(RobotDescription.CONNECTING);
    ProgressBar progress = (ProgressBar) view.findViewById(R.id.progress_circle);
    progress.setIndeterminate(true);
    progress.setVisibility(isConnecting ? View.VISIBLE : View.GONE );
    ImageView errorImage = (ImageView) view.findViewById(R.id.error_icon);
    errorImage.setVisibility( isError ? View.VISIBLE : View.GONE );
    ImageView iv = (ImageView) view.findViewById(R.id.robot_icon);
    iv.setVisibility((isOk || isWifi || isControl || isUnavailable) ? View.VISIBLE : View.GONE);
    if (description.getRobotType() == null) {
      iv.setImageResource(R.drawable.question_mark);
    } else if (isWifi) {
      iv.setImageResource(R.drawable.wifi_question_mark);
    } else if ( description.getRobotIconData() == null ) {
        iv.setImageResource(R.drawable.question_mark);
    } else if( description.getRobotIconData().array().length > 0 && description.getRobotIconFormat() != null &&
            (description.getRobotIconFormat().equals("jpeg") || description.getRobotIconFormat().equals("png")) ) {
      ChannelBuffer buffer = description.getRobotIconData();
      Bitmap iconBitmap = BitmapFactory.decodeByteArray(buffer.array(), buffer.arrayOffset(), buffer.readableBytes());
      if( iconBitmap != null ) {
        iv.setImageBitmap(iconBitmap);
      } else {
          iv.setImageResource(R.drawable.question_mark);
      }
    } else {
      iv.setImageResource(R.drawable.question_mark);
    }
    if ( isUnavailable ) {
      // Be nice to do alpha here, but that is api 16 and we are targeting 10.
      ColorMatrix matrix = new ColorMatrix();
      matrix.setSaturation(0); //0 means grayscale
      ColorMatrixColorFilter cf = new ColorMatrixColorFilter(matrix);
      iv.setColorFilter(cf);
    }
    TextView tv;
    tv = (TextView) view.findViewById(R.id.uri);
    tv.setText(description.getRobotId().toString());
    tv = (TextView) view.findViewById(R.id.name);
    tv.setText(description.getRobotFriendlyName());
    tv = (TextView) view.findViewById(R.id.status);
    tv.setText(errorReason);
  }
}