com.lambdasoup.quickfit.ui.LabelDialogFragment.java Source code

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Here is the source code for com.lambdasoup.quickfit.ui.LabelDialogFragment.java

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/*
 * Copyright 2016 Juliane Lehmann <jl@lambdasoup.com>
 *
 * 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
 * distributed 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 the specific language governing permissions and
 *    limitations under the License.
 */

package com.lambdasoup.quickfit.ui;

import android.app.Activity;
import android.app.Dialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.DialogFragment;
import android.support.v7.app.AlertDialog;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.WindowManager;
import android.view.inputmethod.EditorInfo;
import android.widget.EditText;
import android.widget.TextView;

import com.lambdasoup.quickfit.R;

public class LabelDialogFragment extends DialogFragment
        implements DialogInterface.OnClickListener, TextView.OnEditorActionListener {

    private static final String KEY_WORKOUT_ID = "workoutId";
    private static final String KEY_OLD_VALUE = "oldValue";

    private OnFragmentInteractionListener listener;

    public LabelDialogFragment() {
        // It's a fragment, it needs a default constructor
    }

    public static LabelDialogFragment newInstance(long workoutId, String oldValue) {
        LabelDialogFragment fragment = new LabelDialogFragment();
        Bundle args = new Bundle();
        args.putLong(KEY_WORKOUT_ID, workoutId);
        args.putString(KEY_OLD_VALUE, oldValue);
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        if (activity instanceof OnFragmentInteractionListener) {
            listener = (OnFragmentInteractionListener) activity;
        } else {
            throw new RuntimeException(activity.toString() + " must implement OnFragmentInteractionListener");
        }
    }

    @Override
    public void onDetach() {
        super.onDetach();
        listener = null;
    }

    @NonNull
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        View dialogContent = LayoutInflater.from(getContext()).inflate(R.layout.dialog_label, null);
        EditText editText = (EditText) dialogContent.findViewById(R.id.label_input);
        editText.setText(getArguments().getString(KEY_OLD_VALUE));
        editText.setOnEditorActionListener(this);

        AlertDialog dialog = new AlertDialog.Builder(getContext()).setView(dialogContent)
                .setTitle(R.string.title_workout_label).setPositiveButton(R.string.button_done_workout_label, this)
                .setNegativeButton(R.string.cancel, this).create();

        editText.requestFocus();
        dialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
        return dialog;
    }

    @Override
    public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
        if (actionId == EditorInfo.IME_ACTION_DONE) {
            onDone();
            dismiss();
            return true;
        }
        return false;
    }

    @Override
    public void onClick(DialogInterface dialog, int which) {
        switch (which) {
        case DialogInterface.BUTTON_POSITIVE:
            onDone();
            break;
        case DialogInterface.BUTTON_NEGATIVE:
            break;
        default:
            throw new IllegalStateException("No such button.");
        }
    }

    private void onDone() {
        EditText editText = (EditText) getDialog().findViewById(R.id.label_input);
        String newVal = editText.getText().toString();
        listener.onLabelChanged(getArguments().getLong(KEY_WORKOUT_ID), newVal.isEmpty() ? null : newVal);
    }

    interface OnFragmentInteractionListener {
        void onLabelChanged(long workoutId, String newValue);
    }
}