DialogOpenFile.java

package net.sourceforge.fidocadj.dialogs;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import net.sourceforge.fidocadj.FidoEditor;
import net.sourceforge.fidocadj.R;
import android.app.Activity;
import android.app.Dialog;
import android.app.DialogFragment;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;

/**
    <pre>
    This file is part of FidoCadJ.

    FidoCadJ 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.

    FidoCadJ 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 FidoCadJ.  If not, see <http://www.gnu.org/licenses/>.

    Copyright 2014 by Dante Loi
    </pre>
    @author Dante Loi
*/
public class DialogOpenFile extends DialogFragment
{
    private String[] files;
    private FidoEditor drawingPanel;

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState)
    {
        final Activity context = getActivity();
        final Dialog dialog = new Dialog(context);

        drawingPanel = (FidoEditor)context.findViewById(R.id.drawingPanel);

        dialog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
        dialog.setContentView(R.layout.open_file);

        File dir = context.getFilesDir();
        files = dir.list();

        List<String> listFiles = new ArrayList<String>();

        for( String str:files)
            if( str.indexOf("state.fcd.tmp") == -1 )
                listFiles.add(str);

        if(listFiles.isEmpty())
            listFiles.add("No such file.");

        ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(
                 context,
                 R.layout.list_item, R.id.lblListItem,
                 listFiles);

        ListView list = (ListView) dialog.findViewById(R.id.fileList);
        list.setAdapter(arrayAdapter);
        list.setPadding(10, 10, 10, 10);

        OnItemClickListener clickListener = new OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id)
            {

                StringBuilder text = new StringBuilder();
                text.append("[FIDOCAD]\n");
                File file = new File(context.getFilesDir(),files[position]);
                try {
                    BufferedReader br = new BufferedReader(
                        new FileReader(file));
                    String line;

                    while ((line = br.readLine()) != null) {
                        text.append(line);
                        text.append('\n');
                    }
                    br.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }

                drawingPanel.getParserActions().openFileName = files[position];
                drawingPanel.getParserActions().parseString(new
                    StringBuffer(text.toString()));
                drawingPanel.getUndoActions().saveUndoState();
                drawingPanel.invalidate();

                dialog.dismiss();
            }
        };
        list.setOnItemClickListener(clickListener);

        return dialog;
    }
}