jsettlers.main.android.mainmenu.ui.dialogs.DirectoryPickerDialog.java Source code

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Here is the source code for jsettlers.main.android.mainmenu.ui.dialogs.DirectoryPickerDialog.java

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/*
 * Copyright (c) 2017
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

package jsettlers.main.android.mainmenu.ui.dialogs;

import java.io.File;
import java.io.IOException;

import org.androidannotations.annotations.Background;
import org.androidannotations.annotations.Bean;
import org.androidannotations.annotations.EBean;
import org.androidannotations.annotations.EFragment;
import org.androidannotations.annotations.UiThread;

import jsettlers.common.resources.SettlersFolderChecker;
import jsettlers.main.android.R;
import jsettlers.main.android.core.resources.scanner.AndroidResourcesLoader;

import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.os.Environment;
import android.support.annotation.NonNull;
import android.support.v4.app.DialogFragment;
import android.support.v7.app.AlertDialog;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;

@EFragment
public class DirectoryPickerDialog extends DialogFragment {

    @Bean
    DirectoryAdapter directoryAdapter;
    @Bean
    AndroidResourcesLoader androidResourcesLoader;

    public interface Listener {
        void onDirectorySelected();
    }

    public static DirectoryPickerDialog newInstance() {
        return new DirectoryPickerDialog_();
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    }

    @NonNull
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        ListView listView = new ListView(getActivity());
        listView.setAdapter(directoryAdapter);
        listView.setOnItemClickListener((arg0, arg1, position, arg3) -> {
            directoryAdapter.positionSelected(position);
            setButtonState();
        });

        return new AlertDialog.Builder(getActivity()).setTitle(R.string.resource_selection_dialog_title)
                .setView(listView).setPositiveButton(R.string.ok, (dialog, which) -> {
                    androidResourcesLoader
                            .setResourcesDirectory(directoryAdapter.getCurrentDirectory().getAbsolutePath());
                    ((Listener) getParentFragment()).onDirectorySelected();
                }).create();
    }

    @Override
    public void onStart() {
        super.onStart();
        setButtonState();
    }

    private void setButtonState() {
        AlertDialog dialog = (AlertDialog) getDialog();
        boolean hasGameFiles = SettlersFolderChecker.checkSettlersFolder(directoryAdapter.getCurrentDirectory())
                .isValidSettlersFolder();
        Button button = dialog.getButton(Dialog.BUTTON_POSITIVE);
        button.setEnabled(hasGameFiles);
    }

    @EBean
    static class DirectoryAdapter extends ArrayAdapter<String> {
        private final File baseDirectory;
        private File currentDirectory;

        public DirectoryAdapter(Context context) {
            super(context, android.R.layout.simple_list_item_1);
            this.baseDirectory = Environment.getExternalStorageDirectory();
            this.currentDirectory = this.baseDirectory;

            updateList();
        }

        void positionSelected(int position) {
            String item = getItem(position);
            if (item != null) {
                try {
                    File newDirectory = new File(currentDirectory, item).getCanonicalFile();
                    if (newDirectory.exists()) {
                        currentDirectory = newDirectory;
                        updateList();
                    }
                } catch (IOException e) {
                    // ignore this exception
                }
            }
        }

        @Override
        @UiThread
        public void clear() {
            super.clear();
        }

        @Background
        void updateList() {
            clear();
            addFiles(currentDirectory.listFiles(File::isDirectory));
        }

        @UiThread
        void addFiles(File[] files) {
            if (!baseDirectory.equals(currentDirectory)) {
                add("..");
            }

            if (files != null && files.length > 0) {
                for (File file : files) {
                    add(file.getName());
                }
            } else {
                add(getContext().getResources().getString(R.string.empty_directory));
            }
        }

        File getCurrentDirectory() {
            return currentDirectory;
        }
    }
}