ca.rmen.android.poetassistant.main.dictionaries.FilterDialogFragment.java Source code

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Here is the source code for ca.rmen.android.poetassistant.main.dictionaries.FilterDialogFragment.java

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/*
 * Copyright (c) 2016 Carmen Alvarez
 *
 * This file is part of Poet Assistant.
 *
 * Poet Assistant is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Poet Assistant is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Poet Assistant.  If not, see <http://www.gnu.org/licenses/>.
 */

package ca.rmen.android.poetassistant.main.dictionaries;

import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface.OnClickListener;
import android.databinding.DataBindingUtil;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.Fragment;
import android.support.v7.app.AlertDialog;
import android.support.v7.view.ContextThemeWrapper;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Window;
import android.view.WindowManager;

import ca.rmen.android.poetassistant.Constants;
import ca.rmen.android.poetassistant.R;
import ca.rmen.android.poetassistant.databinding.InputDialogEditTextBinding;

/**
 * Shows a dialog prompting the user enter a word to filter search results.
 * The activity or fragment which adds this dialog must implement the
 * FilterDialogListener interface.
 */
public class FilterDialogFragment extends DialogFragment {

    private static final String TAG = Constants.TAG + FilterDialogFragment.class.getSimpleName();
    private static final String EXTRA_MESSAGE = "message";
    private static final String EXTRA_TEXT = "text";

    public interface FilterDialogListener {
        void onFilterSubmitted(String input);
    }

    public static FilterDialogFragment newInstance(String message, String text) {
        FilterDialogFragment fragment = new FilterDialogFragment();
        Bundle bundle = new Bundle(2);
        bundle.putString(EXTRA_MESSAGE, message);
        bundle.putString(EXTRA_TEXT, text);
        fragment.setArguments(bundle);
        return fragment;
    }

    /**
     * @return a Dialog with a title, message, an edit text, and ok/cancel buttons.
     */
    @Override
    @NonNull
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        Log.v(TAG, "onCreateDialog: savedInstanceState = " + savedInstanceState);
        Context context = getActivity();
        LayoutInflater themedLayoutInflater = LayoutInflater
                .from(new ContextThemeWrapper(getActivity(), R.style.AppAlertDialog));
        final InputDialogEditTextBinding binding = DataBindingUtil.inflate(themedLayoutInflater,
                R.layout.input_dialog_edit_text, null, false);
        Bundle arguments = getArguments();
        binding.edit.setText(arguments.getString(EXTRA_TEXT));

        OnClickListener positiveListener = (dialog, which) -> {
            FilterDialogListener listener;
            Fragment parentFragment = getParentFragment();
            if (parentFragment instanceof FilterDialogListener)
                listener = (FilterDialogListener) parentFragment;
            else
                listener = (FilterDialogListener) getActivity();
            listener.onFilterSubmitted(binding.edit.getText().toString());
        };

        final Dialog dialog = new AlertDialog.Builder(context).setView(binding.getRoot())
                .setTitle(R.string.filter_title).setMessage(arguments.getString(EXTRA_MESSAGE))
                .setPositiveButton(android.R.string.ok, positiveListener)
                .setNegativeButton(android.R.string.cancel, null).create();

        binding.edit.setOnFocusChangeListener((v, hasFocus) -> {
            Window window = dialog.getWindow();
            if (window != null) {
                if (hasFocus) {
                    window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
                } else {
                    window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
                }
            }
        });

        return dialog;
    }
}