at.bitfire.davdroid.syncadapter.EnterCredentialsFragment.java Source code

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Here is the source code for at.bitfire.davdroid.syncadapter.EnterCredentialsFragment.java

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/*******************************************************************************
 * Copyright (c) 2014 Richard Hirner (bitfire web engineering).
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Contributors:
 *     Richard Hirner (bitfire web engineering) - initial API and implementation
 ******************************************************************************/
package at.bitfire.davdroid.syncadapter;

import java.net.MalformedURLException;
import java.net.URL;

import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.TextView;
import at.bitfire.davdroid.R;
import at.bitfire.davdroid.URIUtils;

public class EnterCredentialsFragment extends Fragment implements TextWatcher {
    String protocol;

    TextView textHttpWarning;
    EditText editBaseURL, editUserName, editPassword;
    CheckBox checkboxPreemptive;
    Button btnNext;

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

        // protocol selection spinner
        textHttpWarning = (TextView) v.findViewById(R.id.http_warning);

        Spinner spnrProtocol = (Spinner) v.findViewById(R.id.select_protocol);
        spnrProtocol.setOnItemSelectedListener(new OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                protocol = parent.getAdapter().getItem(position).toString();
                textHttpWarning.setVisibility(protocol.equals("https://") ? View.GONE : View.VISIBLE);
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {
                protocol = null;
            }
        });
        spnrProtocol.setSelection(1); // HTTPS

        // other input fields
        editBaseURL = (EditText) v.findViewById(R.id.baseURL);
        editBaseURL.addTextChangedListener(this);

        editUserName = (EditText) v.findViewById(R.id.userName);
        editUserName.addTextChangedListener(this);

        editPassword = (EditText) v.findViewById(R.id.password);
        editPassword.addTextChangedListener(this);

        checkboxPreemptive = (CheckBox) v.findViewById(R.id.auth_preemptive);

        // hook into action bar
        setHasOptionsMenu(true);

        return v;
    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        inflater.inflate(R.menu.enter_credentials, menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case R.id.next:
            queryServer();
            break;
        default:
            return false;
        }
        return true;
    }

    void queryServer() {
        FragmentTransaction ft = getFragmentManager().beginTransaction();

        Bundle args = new Bundle();

        String host_path = editBaseURL.getText().toString();
        args.putString(QueryServerDialogFragment.EXTRA_BASE_URL, URIUtils.sanitize(protocol + host_path));
        args.putString(QueryServerDialogFragment.EXTRA_USER_NAME, editUserName.getText().toString());
        args.putString(QueryServerDialogFragment.EXTRA_PASSWORD, editPassword.getText().toString());
        args.putBoolean(QueryServerDialogFragment.EXTRA_AUTH_PREEMPTIVE, checkboxPreemptive.isChecked());

        DialogFragment dialog = new QueryServerDialogFragment();
        dialog.setArguments(args);
        dialog.show(ft, QueryServerDialogFragment.class.getName());
    }

    // input validation

    @Override
    public void onPrepareOptionsMenu(Menu menu) {
        boolean ok = editUserName.getText().length() > 0 && editPassword.getText().length() > 0;

        // check host name
        try {
            URL url = new URL(URIUtils.sanitize(protocol + editBaseURL.getText().toString()));
            if (url.getHost() == null || url.getHost().isEmpty())
                ok = false;
        } catch (MalformedURLException e) {
            ok = false;
        }

        MenuItem item = menu.findItem(R.id.next);
        item.setEnabled(ok);
    }

    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
    }

    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {
        getActivity().supportInvalidateOptionsMenu();
    }

    @Override
    public void afterTextChanged(Editable s) {
    }
}