Profile.java

package com.tuit.ar.activities;

import java.util.ArrayList;

import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONTokener;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.tuit.ar.R;
import com.tuit.ar.api.Avatar;
import com.tuit.ar.api.AvatarObserver;
import com.tuit.ar.api.Twitter;
import com.tuit.ar.api.TwitterAccountRequestsObserver;
import com.tuit.ar.api.TwitterRequest;
import com.tuit.ar.api.request.Options;
import com.tuit.ar.models.User;

public class Profile extends Activity implements AvatarObserver, TwitterAccountRequestsObserver {
	protected static final int MENU_VIEW_TIMELINE = 0;

	private ImageView avatar;
	private TextView nickname;
	private TextView fullname;
	private TextView description;
	private Button following;
	private TextView followingNumber;
	private TextView followerNumber;
	private TextView tweetsNumber;
	private TextView location;
	private TextView locationLabel;
	private Button seeInMap;
	private Button sendDm;
	private Button url;

	private User user = null;

	private ProgressDialog loading = null;
	static private User userToDisplay = null;

	static public void setUserToDisplay(User user) {
		userToDisplay = user;
	}

	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		Twitter.getInstance().getDefaultAccount().addRequestObserver(this);
		user = userToDisplay;
		
		userToDisplay = null;
		if (user == null) {
			ArrayList<NameValuePair> params = new ArrayList<NameValuePair>();
			params.add(new BasicNameValuePair("screen_name", getIntent().getStringExtra("screen_name")));
			try {
				loading  = new ProgressDialog(this);
				loading.setTitle(R.string.loading);
				loading.setOnCancelListener(new DialogInterface.OnCancelListener() {
					public void onCancel(DialogInterface arg0) {
						Profile.this.finish();
					}
				});
				loading.show();
				Twitter.getInstance().getDefaultAccount().requestUrl(Options.USER_PROFILE, params, TwitterRequest.METHOD_GET);
			} catch (Exception e) {
				fetchUserFailed();
			}
		} else {
			setUI();
		}
	}

	private void setUI() {
		setContentView(R.layout.profile);
		avatar = (ImageView)findViewById(R.id.avatar);
		avatar.setVisibility(View.INVISIBLE);
		nickname = (TextView)findViewById(R.id.nickname);
		fullname = (TextView)findViewById(R.id.fullname);
		following = (Button)findViewById(R.id.follow);
		following.setOnClickListener(new OnClickListener() {
			public void onClick(View v) {
				following();
			}
		});
		description = (TextView)findViewById(R.id.description);
		followingNumber = (TextView)findViewById(R.id.following_number);
		followerNumber = (TextView)findViewById(R.id.follower_number);
		tweetsNumber = (TextView)findViewById(R.id.tweets_number);
		locationLabel = (TextView)findViewById(R.id.location_label);
		location = (TextView)findViewById(R.id.location);

		url = (Button)findViewById(R.id.url);
		url.setOnClickListener(new OnClickListener() {
			public void onClick(View v) {
				startActivity(new Intent(Intent.ACTION_VIEW , Uri.parse(user.getUrl())));
			}
		});

		sendDm = (Button)findViewById(R.id.send_dm);
		sendDm.setOnClickListener(new OnClickListener() {
			public void onClick(View arg0) {
				Intent intent = new Intent(getApplicationContext(), NewDirectMessage.class);
				intent.putExtra("to_user", user.getScreenName());
				startActivity(intent);
			}
		});
		seeInMap = (Button)findViewById(R.id.see_in_map);
		seeInMap.setOnClickListener(new OnClickListener() {
			public void onClick(View v) {
				Intent intent = new Intent(Intent.ACTION_VIEW , Uri.parse("geo:" + user.getLocation()));
				try {
					startActivity(intent);
				} catch (Exception e) {
					Toast.makeText(Profile.this, getString(R.string.unableToShowMap), Toast.LENGTH_SHORT).show();
					e.printStackTrace();
				}
			}
		});

		setUser();
	}

	private void fetchUserFailed() {
		Toast.makeText(this, getString(R.string.unableToShowUser), Toast.LENGTH_SHORT).show();
		finish();
	}

	private void setUser() {
		if (user != null) {
			if (loading != null) {
				loading.hide();
				loading = null;
			}
			showFollowing();
			Avatar avatar = Avatar.get(user.getProfileImageUrl());
			avatar.addRequestObserver(this);
			avatar.download();
			
			nickname.setText(user.getScreenName());
			fullname.setText(user.getName());
			description.setText(user.getDescription());
			followingNumber.setText(String.valueOf(user.getFriendsCount()));
			followerNumber.setText(String.valueOf(user.getFollowersCount()));
			tweetsNumber.setText(String.valueOf(user.getStatusesCount()));
			String _location = user.getLocation();
			if (_location == null || _location.length() == 0) {
				// FIXME: it's ugly and makes the layout not-reausable... View.GONE breaks everything
				// View.INVISIBLE lefts the space empty
				location.setHeight(0);
				locationLabel.setHeight(0);
			} else {
				location.setText(_location);
				location.setVisibility(View.VISIBLE);
				locationLabel.setVisibility(View.VISIBLE);
			}
			seeInMap.setVisibility(user.getLocation() == null ? View.INVISIBLE : View.VISIBLE);
			String _url = user.getUrl();
			boolean hasUrl = _url != null && _url.length() > 0;
			url.setVisibility(hasUrl ? View.VISIBLE : View.INVISIBLE);
			if (hasUrl) url.setText(_url);
		}
	}

	public void avatarHasFailed(Avatar avatar) {
		this.avatar.setVisibility(View.INVISIBLE);
		avatar.removeRequestObserver(this);
	}

	public void avatarHasFinished(Avatar avatar) {
		this.avatar.setImageBitmap(avatar.getResponse());
		this.avatar.setVisibility(View.VISIBLE);
		avatar.removeRequestObserver(this);
	}

	protected void following() {
        new AlertDialog.Builder(this)
        .setMessage(user.isFollowing() ? R.string.confirmUnfollow : R.string.confirmFollow)
        .setPositiveButton(R.string.yes, new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int which) {
            	try {
            		if (user.isFollowing()) user.stopFollowing();
            		else user.follow();
            	} catch (Exception e) {
            		Toast.makeText(Profile.this, getString(R.string.unableToFollow), Toast.LENGTH_SHORT).show();
            	}
            }
        })
        .setNegativeButton(R.string.no, null)
        .show();
	}

	public void requestHasFinished(TwitterRequest request) {
		if ((request.getUrl().equals(Options.FOLLOW)) || (request.getUrl().equals(Options.UNFOLLOW))) {
			user.requestHasFinished(request);
			showFollowing();
		} else if (request.getUrl().equals(Options.USER_PROFILE)) {
			try {
				user = new User(new JSONObject(new JSONTokener(request.getResponse())));
				setUI();
			} catch (JSONException e) {
				fetchUserFailed();
			}
		}
	}

	private void showFollowing() {
		if (user == null) {
			following.setVisibility(View.GONE);
		} else {
			following.setVisibility(Twitter.getInstance().getDefaultAccount().getUser().getId() == user.getId() ? View.GONE : View.VISIBLE);
			following.setText(getString(user.isFollowing() ? R.string.following : R.string.notFollowing));
		}
	}

	public void requestHasStarted(TwitterRequest request) {
	}

	public boolean onCreateOptionsMenu(Menu menu) {
		menu.add(0, MENU_VIEW_TIMELINE, 0, R.string.viewTimeline);
		return true;
	}

	public boolean onOptionsItemSelected(MenuItem item) {  
	    switch (item.getItemId()) {  
	    case MENU_VIEW_TIMELINE:
	    {
	    	com.tuit.ar.activities.timeline.User.setUser(user);
	        Intent intent = new Intent(this.getApplicationContext(), com.tuit.ar.activities.timeline.User.class);
	        this.startActivity(intent);
	        return true;
	    }
	    }
	    return false;
	}

	@Override
	public void onDestroy() {
		super.onDestroy();
		Twitter.getInstance().getDefaultAccount().removeRequestObserver(this);
		if (following != null) following.setOnClickListener(null);
		if (url != null) url.setOnClickListener(null);
		if (sendDm != null) sendDm.setOnClickListener(null);
		if (seeInMap != null) seeInMap.setOnClickListener(null);
	}
}