com.digi.android.wva.fragments.ConnectionErrorDialog.java Source code

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Here is the source code for com.digi.android.wva.fragments.ConnectionErrorDialog.java

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/* 
 * This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of
 * the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
 * 
 * Copyright (c) 2014 Digi International Inc., All Rights Reserved. 
 */

package com.digi.android.wva.fragments;

import android.R;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;

/**
 * A {@link DialogFragment} used to display error messages related to the
 * connection with a WVA device.
 */
public class ConnectionErrorDialog extends DialogFragment {
    private String title, message;

    /**
     * Interface for activities to implement,
     * so they can handle clicking "Ok" in this dialog and
      * (in most cases) call finish() on themselves (as a response to the
      * error).
     * 
     * @see <a href="http://stackoverflow.com/q/7557265">StackOverflow inspiration</a>
     * 
     * @author mwadsten
     *
     */
    public interface ErrorDialogListener {
        /**
         * Called when the "Okay" button is pressed on the error dialog.
         */
        void onOkay();
    }

    public static ConnectionErrorDialog newInstance(String title, String message) {
        // See Android developer documentation, DialogFragment
        ConnectionErrorDialog f = new ConnectionErrorDialog();

        Bundle args = new Bundle();
        args.putString("title", title);
        args.putString("message", message);
        f.setArguments(args);

        return f;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Bundle args = getArguments();
        title = args.getString("title");
        message = args.getString("message");
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        if (!(activity instanceof ErrorDialogListener)) {
            throw new ClassCastException(activity.toString() + " must implement ErrorDialogListener!");
        }
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        this.setCancelable(false);
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        builder.setMessage(this.message).setTitle(this.title).setPositiveButton(R.string.ok,
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        ((ErrorDialogListener) getActivity()).onOkay();
                    }
                });
        return builder.create();
    }
}