OpenFileFragment.java

/**
 *  Copyright (C) 2012   The FreeCol-Android Team
 *
 *  This file is part of FreeCol-Android.
 *
 *  FreeCol-Android 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 2 of the License, or
 *  (at your option) any later version.
 *
 *  FreeCol 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 FreeCol-Android.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.freecolandroid.ui.menu;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import net.sf.freecol.client.gui.i18n.Messages;

import org.freecolandroid.R;
import org.freecolandroid.debug.FCLog;
import org.freecolandroid.ui.FreeColDialogFragment;

import android.app.Dialog;
import android.content.Context;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;

public class OpenFileFragment extends FreeColDialogFragment {

    public static final String TAG = "OpenFileFragment";

    private static final String ARG_DIR = "directory";

    private static final String ARG_FILE_EXT = "file_extension";

    private File mSelectedFile;

    public static OpenFileFragment newInstance(String directory, String fileExt) {
        FCLog.log("Starting Open File dialog, dir=" + directory + ", ext=" + fileExt);
        OpenFileFragment f = new OpenFileFragment();
        Bundle args = new Bundle();
        args.putString(ARG_DIR, directory);
        args.putString(ARG_FILE_EXT, fileExt);
        f.setArguments(args);
        return f;
    }

    // @Override
    // public Dialog onCreateDialog(Bundle savedInstanceState) {
    // Dialog d = new Dialog(getActivity(), R.style.GameMenu);
    // d.setContentView(R.layout.frag_dialog_open_file);
    // return d;
    // }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        setStyle(STYLE_NO_FRAME, getTheme());
        return super.onCreateDialog(savedInstanceState);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.frag_dialog_open_file, container, false);
    }

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

        File dir = new File(getArguments().getString(ARG_DIR));
        String fileExt = getArguments().getString(ARG_FILE_EXT);

        final Button openButton = (Button) getDialog().findViewById(R.id.open);

        final ListView list = (ListView) getDialog().findViewById(R.id.file_list);
        final DirectoryListAdapter adapter = new DirectoryListAdapter(getActivity(), dir, fileExt);
        list.setAdapter(adapter);
        list.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                mSelectedFile = (File) adapter.getItem(position);
                if (mSelectedFile.isDirectory()) {
                    adapter.setDirectory(mSelectedFile);
                    adapter.notifyDataSetInvalidated();
                    openButton.setEnabled(false);
                } else {
                    openButton.setEnabled(true);
                }
                FCLog.log("Selected " + mSelectedFile.getName());
            }
        });

        TextView title = (TextView) getDialog().findViewById(R.id.open_title);
        title.setText(Messages.message("openAction.name"));

        openButton.setText(Messages.message("openAction.name"));
        openButton.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                dismiss();
                AsyncTask.THREAD_POOL_EXECUTOR.execute(new Runnable() {

                    @Override
                    public void run() {
                        mClient.getInGameController().loadGame(mSelectedFile);
                    }
                });
            }
        });
    }

    private static class DirectoryListAdapter extends BaseAdapter {

        private final List<File> mFiles = new ArrayList<File>();

        private File mParentDirectory;

        private final Context mContext;

        private final String mFileExt;

        public DirectoryListAdapter(Context context, File directory, String fileExt) {
            mContext = context;
            mFileExt = fileExt;
            setDirectory(directory);
        }

        public void setDirectory(File directory) {
            mFiles.clear();
            mParentDirectory = directory.getParentFile();
            if (mParentDirectory != null) {
                mFiles.add(mParentDirectory);
            }
            File[] files = directory.listFiles();
            if (files != null) {
                for (File f : files) {
                    FCLog.log("Checking " + f.getName());
                    if (f.getName().endsWith(mFileExt) || f.isDirectory()) {
                        FCLog.log("Match");
                        mFiles.add(f);
                    } else {
                        FCLog.log("Not a match");
                    }
                }
            } else {
                FCLog.log("Not a directory");
            }
        }

        @Override
        public int getCount() {
            return mFiles.size();
        }

        @Override
        public Object getItem(int position) {
            return mFiles.get(position);
        }

        @Override
        public long getItemId(int position) {
            return 0;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            if (convertView == null) {
                convertView = LayoutInflater.from(mContext).inflate(R.layout.list_item_file,
                        parent, false);
            }
            File file = mFiles.get(position);
            TextView text = (TextView) convertView.findViewById(R.id.name);
            if (file == mParentDirectory) {
                text.setText("..");
            } else {
                text.setText(file.getName());
            }
            return convertView;
        }

    }
}