net.alexjf.tmm.fragments.UserEditorFragment.java Source code

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Here is the source code for net.alexjf.tmm.fragments.UserEditorFragment.java

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/*******************************************************************************
 * Copyright (c) 2013 - Alexandre Jorge Fonseca (alexjf.net)
 * License: GPL v3 (http://www.gnu.org/licenses/gpl-3.0.txt)
 ******************************************************************************/
package net.alexjf.tmm.fragments;

import android.content.res.Resources;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import net.alexjf.tmm.R;
import net.alexjf.tmm.database.DatabaseManager;
import net.alexjf.tmm.domain.User;
import net.alexjf.tmm.domain.UserList;
import net.alexjf.tmm.utils.Utils;

public class UserEditorFragment extends Fragment {
    private static final String KEY_CURRENTUSER = "username";

    private User user;
    private OnUserEditListener listener;
    private UserList userList;

    private EditText usernameText;
    private TextView passwordLabel;
    private EditText passwordText;
    private EditText passwordConfirmText;
    private TextView oldPasswordLabel;
    private EditText oldPasswordText;
    private Button addButton;

    /**
     * @return the user
     */
    public User getUser() {
        return user;
    }

    /**
     * @param user the user to set
     */
    public void setUser(User user) {
        User prevUser = this.user;
        this.user = user;

        if (prevUser != user) {
            updateUserFields();
        }
    }

    /**
     * @return the listener
     */
    public OnUserEditListener getListener() {
        return listener;
    }

    /**
     * @param listener the listener to set
     */
    public void setListener(OnUserEditListener listener) {
        this.listener = listener;
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.fragment_user_editor, container, false);

        userList = new UserList();

        usernameText = (EditText) v.findViewById(R.id.username_text);
        passwordLabel = (TextView) v.findViewById(R.id.password_label);
        passwordText = (EditText) v.findViewById(R.id.password_text);
        passwordConfirmText = (EditText) v.findViewById(R.id.password_confirm_text);
        oldPasswordLabel = (TextView) v.findViewById(R.id.password_old_label);
        oldPasswordText = (EditText) v.findViewById(R.id.password_old_text);
        addButton = (Button) v.findViewById(R.id.add_button);

        addButton.setOnClickListener(new OnClickListener() {
            public void onClick(View view) {
                if (!validateInputFields()) {
                    return;
                }

                String username = usernameText.getText().toString();
                // TODO: This needs some salt
                String password = Utils.sha1(passwordText.getText().toString());

                if (user == null) {
                    User newUser = userList.addUser(username);
                    DatabaseManager.getInstance().login(username, password);
                    listener.onUserCreated(newUser);
                } else {
                    String oldPassword = Utils.sha1(oldPasswordText.getText().toString());
                    if (!DatabaseManager.getInstance().changePassword(username, oldPassword, password)) {
                        Toast.makeText(getActivity(), R.string.error_password_change, Toast.LENGTH_LONG).show();
                        return;
                    }
                    listener.onUserEdited(user);
                }
            }
        });

        if (savedInstanceState != null) {
            user = savedInstanceState.getParcelable(KEY_CURRENTUSER);
        }

        updateUserFields();

        return v;
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        outState.putParcelable(KEY_CURRENTUSER, user);
        super.onSaveInstanceState(outState);
    }

    private void updateUserFields() {
        passwordText.setText("");
        passwordConfirmText.setText("");
        oldPasswordText.setText("");

        if (user == null) {
            usernameText.setText("");
            usernameText.setEnabled(true);
            passwordLabel.setText(R.string.password);
            oldPasswordLabel.setVisibility(View.GONE);
            oldPasswordText.setVisibility(View.GONE);
            addButton.setText(R.string.add);
        } else {
            usernameText.setText(user.getName());
            usernameText.setEnabled(false);
            passwordLabel.setText(R.string.password_new);
            oldPasswordLabel.setVisibility(View.VISIBLE);
            oldPasswordText.setVisibility(View.VISIBLE);
            addButton.setText(R.string.edit);
        }
    }

    private boolean validateInputFields() {
        boolean error = false;

        Resources res = getResources();
        Drawable errorDrawable = res.getDrawable(R.drawable.indicator_input_error);
        errorDrawable.setBounds(0, 0, errorDrawable.getIntrinsicWidth(), errorDrawable.getIntrinsicHeight());

        String name = usernameText.getText().toString();

        String nameError = null;
        if (TextUtils.isEmpty(name)) {
            nameError = res.getString(R.string.error_username_not_empty);
        } else {
            UserList userList = new UserList();
            if (user == null && userList.getUser(name) != null) {
                nameError = res.getString(R.string.error_username_already_exists);
            }
        }

        if (nameError != null) {
            usernameText.setError(nameError, errorDrawable);
            error = true;
        }

        if (!passwordConfirmText.getText().toString().equals(passwordText.getText().toString())) {
            passwordConfirmText.setError(res.getString(R.string.error_password_confirmation), errorDrawable);
            error = true;
        }

        // If we are editing a user...
        if (user != null) {
            String username = user.getName();
            String passwordHash = Utils.sha1(oldPasswordText.getText().toString());
            if (!DatabaseManager.getInstance().login(username, passwordHash)) {
                oldPasswordText.setError(res.getString(R.string.error_wrong_password), errorDrawable);
                error = true;
            }
        }

        return !error;
    }

    public interface OnUserEditListener {
        public void onUserCreated(User user);

        public void onUserEdited(User user);
    }

}