com.vsu.bruteremote.FileBrowser.java Source code

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Here is the source code for com.vsu.bruteremote.FileBrowser.java

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/*
 * Copyright (c) 2011 Victor Su
 *
 * This program is open source. For license terms, see the LICENSE file.
 *
 */

package com.vsu.bruteremote;

import java.util.ArrayList;
import java.util.List;

import org.json.JSONArray;
import org.json.JSONObject;

import android.app.Activity;
import android.app.ListActivity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

public class FileBrowser extends ListActivity {
    // Debugging
    private static final String TAG = "FileBrowser";
    private static final boolean D = false;

    // Intent extra for displayed filename.
    public static String EXTRA_FILENAME = "filename";

    // Intent extra for full path to file.
    public static String EXTRA_FULLPATH = "fullpath";

    // Intent extra for parent directory of file.
    public static String EXTRA_PARENTPATH = "directory";

    // Intent extra for initial file browser path.
    public static String EXTRA_STARTPATH = "startpath";

    // Intent request codes
    public static final int REQUEST_SELECT_FILE = 1;

    /**
     * Called when the activity is first created.
     * @param savedInstanceState  If the activity is being re-created from a previous
     *                            saved state, this is the state.
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        if (D)
            Log.e(TAG, "+ ON CREATE +");

        super.onCreate(savedInstanceState);

        Bundle extras = getIntent().getExtras();

        String directory = "";
        if (extras != null) {
            directory = extras.getString(EXTRA_STARTPATH);
        }

        // Render initial directory listing
        refreshData(directory);

        // Set result CANCELED in case the user backs out
        setResult(Activity.RESULT_CANCELED);
    }

    /**
     * Called when a list item is clicked.
     * @param l         The ListView where the click happened
     * @param v         The view that was clicked within the ListView
      * @param position  The position of the view in the list
      * @param id        The row id of the item that was clicked
      */
    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);

        // Get the item that was clicked
        FileBrowserItem item = (FileBrowserItem) this.getListAdapter().getItem(position);

        if (item.isSubdirectory()) {
            refreshData(item.getFullPath());
        } else {
            // Create the result Intent and include the filename
            Intent intent = new Intent();
            intent.putExtra(EXTRA_FILENAME, item.getDisplayText());
            intent.putExtra(EXTRA_PARENTPATH, item.getParentPath());
            intent.putExtra(EXTRA_FULLPATH, item.getFullPath());

            // Set result and finish this Activity
            setResult(Activity.RESULT_OK, intent);

            finish();
        }
    }

    /**
     * Retrieves data and refreshes the view.
      * @param path  The directory path to load.
      */
    private void refreshData(String path) {
        if (BruteRemote.mIO.checkConnection()) {
            String json = BruteRemote.mIO.listDirectory(path);

            if (!json.equals("")) {
                try {
                    FileBrowserItem[] items = parse(json);
                    if (items != null) {
                        this.setTitle(path);
                        this.setListAdapter(new FileBrowserArrayAdapter(this, items));
                    }
                } catch (Exception e) {
                }
            }
        }
    }

    private FileBrowserItem[] parse(String jString) throws Exception {
        List<FileBrowserItem> items = new ArrayList<FileBrowserItem>();

        JSONObject jObject = new JSONObject(jString);

        String dir = jObject.getString("dir");
        JSONArray subdirArray = jObject.getJSONArray("subdir");
        JSONArray fileArray = jObject.getJSONArray("file");

        for (int ix = 0; ix < subdirArray.length(); ix++) {
            JSONObject obj = subdirArray.getJSONObject(ix);

            String display = obj.getString("display");
            String name = obj.getString("name");
            String path = obj.getString("path");

            items.add(new FileBrowserItem(display, name, dir, path, true));
        }

        for (int ix = 0; ix < fileArray.length(); ix++) {
            JSONObject obj = fileArray.getJSONObject(ix);

            String display = obj.getString("display");
            String name = obj.getString("name");
            String path = obj.getString("path");

            items.add(new FileBrowserItem(display, name, dir, path, false));
        }

        return items.toArray(new FileBrowserItem[0]);
    }

    public class FileBrowserArrayAdapter extends ArrayAdapter<FileBrowserItem> {
        // The list of file browser items.
        private final FileBrowserItem[] mItems;

        /**
         * Constructor for the class.
         * @param context  The activity context.
         * @param items    The file browser items.
         */
        public FileBrowserArrayAdapter(Context context, FileBrowserItem[] items) {
            super(context, R.layout.rowlayout, items);
            mItems = items;
        }

        /**
         * Called to render the View.
         */
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            LayoutInflater inflater = getLayoutInflater();
            View rowView = inflater.inflate(R.layout.rowlayout, null, true);

            TextView textView = (TextView) rowView.findViewById(R.id.label);
            ImageView imageView = (ImageView) rowView.findViewById(R.id.icon);

            // Change the icon for directories
            FileBrowserItem item = mItems[position];
            if (item.isSubdirectory()) {
                imageView.setImageResource(R.drawable.ic_menu_archive);
            } else {
                imageView.setImageResource(R.drawable.ic_menu_compose);
            }

            textView.setText(item.getDisplayText());

            return rowView;
        }
    }
}