RegisterActivity.java

package edu.gatech.oad.rocket.findmythings;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.text.InputFilter;
import android.text.TextUtils;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import edu.gatech.oad.rocket.findmythings.model.MessageBean;
import edu.gatech.oad.rocket.findmythings.service.EndpointUtils;
import edu.gatech.oad.rocket.findmythings.service.Fmthings;
import edu.gatech.oad.rocket.findmythings.util.*;
import edu.gatech.oad.rocket.findmythings.util.validation.EmailValidator;

import java.io.IOException;

/**
 * CS 2340 - FindMyStuff Android App
 * Activity that takes care of registration of a new member
 *
 * @author TeamRocket
 * */
public class RegisterActivity extends Activity {

	/**
	 * Form values.
	 */
	private String mEmail, mPassword, mCon, mPhone, mName, mAddress;

	/**
	 * Copied email address from the login window.
	 */
	public static String rEmail = "";

	/**
	 * UI references.
	 */
	private EditText mEmailView;
	private EditText mPasswordView;
	private EditText mPhoneView;
	private EditText mAddressView;
	private EditText mNameView;
	private EditText mConfirmView;

	private View focusView;

	private View mStatusForm;
	private View mStatusView;
	private TextView mStatusMessageView;

	/**
	 * Keep track of the task to ensure we can cancel it if requested.
	 */
	private RegisterUserTask mSubmitTask = null;

	/**
	 * creates new window with correct layout
	 * @param savedInstanceState
	 */
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_register);

		// Hide the Up button in the action bar.
		setupActionBar();

		// Gets mEmail from LoginActivity
		Intent i = getIntent();
		String s = i.getExtras().getString("email");
		if (s == null) s = "";

		mEmailView = (EditText) findViewById(R.id.email);
		mEmailView.setText(s);
		rEmail = s;

		mPasswordView = (EditText) findViewById(R.id.pass);
		mAddressView = (EditText) findViewById(R.id.address);
		mNameView = (EditText) findViewById(R.id.lookingfor);
		mConfirmView = (EditText) findViewById(R.id.confirmpass);
		mPhoneView = (EditText) findViewById(R.id.phone);
		mPhoneView.addTextChangedListener(new PhoneNumberTextWatcher());
		mPhoneView.setFilters(new InputFilter[] { new PhoneNumberFilter(), new InputFilter.LengthFilter(14) });

		mStatusForm = findViewById(R.id.register_form);
		mStatusView = findViewById(R.id.register_status);
		mStatusMessageView = (TextView) findViewById(R.id.register_status_message);
	}

	/**
	 * deals with action to do once a key is pressed down
	 * @param keyCode - key pressed
	 * @param event - event to do in case of pressed
	 * @return true when done
	 */
	@Override
	public boolean onKeyDown(int keyCode, KeyEvent event)  {
		//Tells Activity what to do when back key is pressed
	    if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
			super.onBackPressed();
			return true;
	    }
	    return super.onKeyDown(keyCode, event);
	}

	/**
	 * Set up the {@link android.app.ActionBar}.
	 */
	private void setupActionBar() {
		getActionBar().setDisplayHomeAsUpEnabled(true);
		getActionBar().setDisplayShowHomeEnabled(true);
	}

	private boolean containsNoErrors() {
		if (TextUtils.isEmpty(mPassword)) {
			mPasswordView.setError(getString(R.string.error_field_required));
			focusView = mPasswordView;
			return false;
		} else if (TextUtils.isEmpty(mEmail)) {
			mEmailView.setError(getString(R.string.error_field_required));
			focusView = mEmailView;
			return false;
		} else if (!EmailValidator.getInstance().isValid(mEmail)) {
			mEmailView.setError(getString(R.string.error_invalid_email));
			focusView = mEmailView;
			return false;
		} else if (!mPassword.equals(mCon)) {
			mPasswordView.setError(getString(R.string.error_passwords_match));
			focusView = mPasswordView;
			return false;
		}
		return true;
	}

	/**
	 * RegisterActivity new user and return to login screen
	 * or just move on to the main screen with the newly created user
	 * already logged in.
	 */
	private boolean attemptToRegister() {
		mEmail = mEmailView.getText().toString();
		mPassword = mPasswordView.getText().toString();
		mPhone = mPhoneView.getText().toString();
		mCon = mConfirmView.getText().toString();
		mName = mNameView.getText().toString();
		mAddress = mAddressView.getText().toString();

		if (mSubmitTask != null) {
			return false;
		}

		if (containsNoErrors()) {
			mStatusMessageView.setText(R.string.submit_progress_message);
			showProgress(true);

			mSubmitTask = new RegisterUserTask();
			mSubmitTask.execute();

			return true;
		} else {
			focusView.requestFocus();
			return false;
		}
	}

	/**
	 * creates the options menu 
	 * @param menu
	 * @return true when done
	 */
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.register, menu);
		return true;
	}

	/**
	 * deals with action when an options button is selected
	 * @param item
	 * @return boolean  
	 */
	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		switch (item.getItemId()) {
		case R.id.register_ok:
			return attemptToRegister();
		case R.id.register_cancel:
		case android.R.id.home:
			return toLogin(false);
		}
		return super.onOptionsItemSelected(item);
	}


	/**
	 * Shows the progress UI and hides the form.
	 */
	@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
	private void showProgress(final boolean show) {
		// On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow
		// for very easy animations. If available, use these APIs to fade-in
		// the progress spinner.
		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
			int shortAnimTime = getResources().getInteger(
					android.R.integer.config_shortAnimTime);

			mStatusView.setVisibility(View.VISIBLE);
			mStatusView.animate().setDuration(shortAnimTime)
					.alpha(show ? 1 : 0)
					.setListener(new AnimatorListenerAdapter() {
						@Override
						public void onAnimationEnd(Animator animation) {
							mStatusView.setVisibility(show ? View.VISIBLE : View.GONE);
						}
					});

			mStatusForm.setVisibility(View.VISIBLE);
			mStatusForm.animate().setDuration(shortAnimTime)
					.alpha(show ? 0 : 1)
					.setListener(new AnimatorListenerAdapter() {
						@Override
						public void onAnimationEnd(Animator animation) {
							mStatusForm.setVisibility(show ? View.GONE : View.VISIBLE);
						}
					});
		} else {
			// The ViewPropertyAnimator APIs are not available, so simply show
			// and hide the relevant UI components.
			mStatusView.setVisibility(show ? View.VISIBLE : View.GONE);
			mStatusForm.setVisibility(show ? View.GONE : View.VISIBLE);
		}
	}

	/**
	 * Represents an asynchronous submission task used to upload an item.
	 */
	public class RegisterUserTask extends AsyncTask<Void, Void, MessageBean> {

		@Override
		protected MessageBean doInBackground(Void... param) {
			try {
				Fmthings.Account.Register op = EndpointUtils.getEndpoint().account().register(mEmail, mPassword, mCon);
				if (mPhone != null) op.setPhone(mPhone);
				if (mName != null) op.setName(mName);
				if (mAddress != null) op.setAddress(mAddress);
				return op.execute();
			} catch (IOException e) {
				return null;
			}
		}

		/**
		 * deals with action when registered either successfully or not
		 * @param output - response from the API method
		 */
		@Override
		protected void onPostExecute(final MessageBean output) {
			mSubmitTask = null;

			String status = null, failureMessage = null;
			if (output != null) {
				status = output.getMessage();
				failureMessage = output.getFailureReason();
			}
			Messages.Register failureType = EnumHelper.forTextString(Messages.Register.class, failureMessage);

			if (status != null && status.equals(Messages.Status.OK.getText())) {
				toLogin(true);
			} else if (failureType != null){
				switch (failureType) {
					case ALREADY_USER:
						mEmailView.setError(getString(R.string.error_already_user));
						mEmailView.requestFocus();
						break;
					case BAD_EMAIL_ADDRESS:
						mEmailView.setError(getString(R.string.error_invalid_email));
						mEmailView.requestFocus();
						break;
					case BAD_PASSWORD:
						mPasswordView.setError(getString(R.string.error_short_password));
						mPasswordView.requestFocus();
						break;
					case PASSWORDS_MATCH:
						mPasswordView.setError(getString(R.string.error_passwords_match));
						mPasswordView.requestFocus();
						break;
					case INVALID_PHONE:
						mPhoneView.setError(getString(R.string.error_invalid_phone));
						mPhoneView.requestFocus();
						break;
					default:
						ToastHelper.showError(RegisterActivity.this, getString(R.string.error_invalid_data));
						break;
				}
			} else {
				ToastHelper.showError(RegisterActivity.this, getString(R.string.error_no_response));
			}

			showProgress(false);
		}

		/**
		 * deals with action when task cancelled
		 */
		@Override
		protected void onCancelled() {
			mSubmitTask = null;
			showProgress(false);
		}
	}
	
	/**
	 * Called to pop the login window from the navigation stack
	 */
	@Override 
    public void finish() {
        super.finish();
        overridePendingTransition(R.anim.slide_in_right, R.anim.slide_out_right);
    }
	
	/**
	 * Returns to the login window either as a result of registering or hitting back
	 * @param registered true to push log in, false to pop
	 * @return true, always true. Why? Because.
	 */
	private boolean toLogin(boolean registered) {
		finish();
	    if (registered) overridePendingTransition(R.anim.slide_in_left, R.anim.slide_out_left);
	    return true;
	}

}