org.projectbuendia.client.ui.dialogs.NewUserDialogFragment.java Source code

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Here is the source code for org.projectbuendia.client.ui.dialogs.NewUserDialogFragment.java

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// Copyright 2015 The Project Buendia Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License.  You may obtain a copy
// of the License at: http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software distrib-
// uted under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES
// OR CONDITIONS OF ANY KIND, either express or implied.  See the License for
// specific language governing permissions and limitations under the License.

package org.projectbuendia.client.ui.dialogs;

import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.DialogFragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.WindowManager.LayoutParams;
import android.widget.EditText;

import org.projectbuendia.client.App;
import org.projectbuendia.client.R;
import org.projectbuendia.client.json.JsonNewUser;
import org.projectbuendia.client.utils.Utils;

import butterknife.ButterKnife;
import butterknife.InjectView;

/** A {@link android.support.v4.app.DialogFragment} for adding a new user. */
public class NewUserDialogFragment extends DialogFragment {
    @InjectView(R.id.add_user_given_name_tv)
    EditText mGivenName;
    @InjectView(R.id.add_user_family_name_tv)
    EditText mFamilyName;
    private LayoutInflater mInflater;
    @Nullable
    private ActivityUi mActivityUi; // optional UI for showing a spinner

    /** An interface to show a spinner while the new user is being saved. */
    public interface ActivityUi {
        void showSpinner(boolean show);
    }

    /** Creates a new instance and registers the given UI, if specified. */
    public static NewUserDialogFragment newInstance(ActivityUi activityUi) {
        NewUserDialogFragment fragment = new NewUserDialogFragment();
        fragment.setUi(activityUi);
        return fragment;
    }

    public void setUi(ActivityUi activityUi) {
        mActivityUi = activityUi;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mInflater = LayoutInflater.from(getActivity());
    }

    @Override
    public @NonNull Dialog onCreateDialog(Bundle savedInstanceState) {
        View fragment = mInflater.inflate(R.layout.new_user_dialog_fragment, null);
        ButterKnife.inject(this, fragment);

        AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(getActivity()).setCancelable(false) // Disable auto-cancel.
                .setTitle(getResources().getString(R.string.title_new_user))
                .setPositiveButton(getResources().getString(R.string.ok), null)
                .setNegativeButton(getResources().getString(R.string.cancel), null).setView(fragment);

        final AlertDialog dialog = dialogBuilder.create();
        dialog.setOnShowListener(new DialogInterface.OnShowListener() {
            @Override
            public void onShow(DialogInterface dialogInterface) {
                dialog.getButton(DialogInterface.BUTTON_POSITIVE).setOnClickListener(new View.OnClickListener() {

                    @Override
                    public void onClick(View view) {
                        // Validate the user.
                        String givenName = mGivenName.getText() == null ? ""
                                : mGivenName.getText().toString().trim();
                        String familyName = mFamilyName.getText() == null ? ""
                                : mFamilyName.getText().toString().trim();
                        boolean valid = true;
                        if (givenName.isEmpty()) {
                            setError(mGivenName, R.string.given_name_cannot_be_null);
                            valid = false;
                        }
                        if (familyName.isEmpty()) {
                            setError(mFamilyName, R.string.family_name_cannot_be_null);
                            valid = false;
                        }
                        Utils.logUserAction("add_user_submitted", "valid", "" + valid, "given_name", givenName,
                                "family_name", familyName);
                        if (!valid)
                            return;

                        App.getUserManager().addUser(new JsonNewUser(givenName, familyName));
                        if (mActivityUi != null) {
                            mActivityUi.showSpinner(true);
                        }
                        dialog.dismiss();
                    }
                });
            }
        });
        // Open the keyboard, ready to type into the given name field.
        dialog.getWindow().setSoftInputMode(LayoutParams.SOFT_INPUT_STATE_VISIBLE);
        return dialog;
    }

    private void setError(EditText field, int resourceId) {
        field.setError(getResources().getString(resourceId));
        field.invalidate();
        field.requestFocus();
    }
}