com.fimagena.filepicker.NewFolderFragment.java Source code

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Here is the source code for com.fimagena.filepicker.NewFolderFragment.java

Source

/*
 * Copyright (c) 2015 Fimagena
 * Based on code with copyright (c) 2015 Jonas Kalderstam
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.fimagena.filepicker;

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.v4.app.FragmentManager;
import android.support.v7.app.AlertDialog;
import android.text.Editable;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class NewFolderFragment extends DialogFragment {

    private static final String TAG = "new_folder_fragment";
    private OnNewFolderListener listener = null;

    public interface OnNewFolderListener {
        void onNewFolder(final String name); // Name is validated to be non-null, non-empty and not containing any slashes.
    }

    public void setListener(final OnNewFolderListener listener) {
        this.listener = listener;
    }

    public static void showDialog(final FragmentManager fm, final OnNewFolderListener listener) {
        NewFolderFragment newFolderFragment = new NewFolderFragment();
        newFolderFragment.setListener(listener);
        newFolderFragment.show(fm, TAG);
    }

    @NonNull
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        builder.setView(R.layout.dialog_folder_name).setTitle(R.string.new_folder)
                .setNegativeButton(android.R.string.cancel, null).setPositiveButton(android.R.string.ok, null);

        final AlertDialog dialog = builder.create();

        dialog.setOnShowListener(new DialogInterface.OnShowListener() {
            @Override
            public void onShow(DialogInterface dialog1) {
                final AlertDialog dialog = (AlertDialog) dialog1;
                final EditText editText = (EditText) dialog.findViewById(R.id.edit_text);

                Button cancel = dialog.getButton(AlertDialog.BUTTON_NEGATIVE);
                cancel.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        dialog.cancel();
                    }
                });

                final Button ok = dialog.getButton(AlertDialog.BUTTON_POSITIVE);
                ok.setEnabled(false); // Start disabled
                ok.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        String itemName = editText.getText().toString();
                        if (validateName(itemName)) {
                            if (listener != null)
                                listener.onNewFolder(itemName);
                            dialog.dismiss();
                        }
                    }
                });

                editText.addTextChangedListener(new TextWatcher() {
                    @Override
                    public void beforeTextChanged(final CharSequence s, final int start, final int count,
                            final int after) {
                    }

                    @Override
                    public void onTextChanged(final CharSequence s, final int start, final int before,
                            final int count) {
                    }

                    @Override
                    public void afterTextChanged(final Editable s) {
                        ok.setEnabled(validateName(s.toString()));
                    }
                });
            }
        });

        return dialog;
    }

    private boolean validateName(final String itemName) {
        return !TextUtils.isEmpty(itemName) && !itemName.contains("/") && !itemName.equals(".")
                && !itemName.equals("..");
    }
}