/*
* Tweetings - Twitter client for Android
*
* Copyright (C) 2012-2013 RBD Solutions Limited <apps@tweetings.net>
* Copyright (C) 2012 Mariotaku Lee <mariotaku.lee@gmail.com>
*
* This program 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.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.dwdesign.tweetings.activity;
import static android.os.Environment.getExternalStorageDirectory;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import com.dwdesign.tweetings.Constants;
import com.dwdesign.tweetings.R;
import com.dwdesign.tweetings.fragment.BaseDialogFragment;
import com.dwdesign.tweetings.util.FileUtils;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.LoaderManager.LoaderCallbacks;
import android.support.v4.content.AsyncTaskLoader;
import android.support.v4.content.Loader;
import android.text.Editable;
import android.text.InputFilter;
import android.text.Spanned;
import android.text.TextUtils.TruncateAt;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
public class FileSaveAsActivity extends BaseActivity implements Constants, OnItemClickListener,
LoaderCallbacks<List<File>>, DialogInterface.OnClickListener, TextWatcher {
private File mCurrentDirectory, mSourceFile;
private ListView mListView;
private DirectoriesAdapter mAdapter;
private EditText mEditFileName;
private String mDefaultFileName, mFileName;
private final DialogFragment mOverwriteComfirmFragment = new OverwriteComfirmFragment(),
mSaveProgressFragment = new SaveProgressFragment();
private SaveFileTask mSaveFileTask;
private static InputFilter VALID_FILENAME_FILTER = new InputFilter() {
@Override
public CharSequence filter(final CharSequence source, final int start, final int end, final Spanned dest,
final int dstart, final int dend) {
for (int i = start; i < end; i++) {
final char c = source.charAt(i);
switch (c) {
case '/':
case '\\':
case ':':
case '"':
case '*':
case '?':
case '<':
case '>':
case '|':
return "";
}
}
return null;
}
};
@Override
public void afterTextChanged(final Editable s) {
}
@Override
public void beforeTextChanged(final CharSequence s, final int start, final int count, final int after) {
}
@Override
public void onBackPressed() {
if (mCurrentDirectory != null) {
final File parent = mCurrentDirectory.getParentFile();
if (parent != null) {
mCurrentDirectory = parent;
invalidateSupportOptionsMenu();
getSupportLoaderManager().restartLoader(0, null, this);
return;
}
}
setResult(RESULT_CANCELED);
finish();
}
@Override
public void onClick(final DialogInterface dialog, final int id) {
switch (id) {
case DialogInterface.BUTTON_POSITIVE: {
if (mSaveFileTask != null) {
mSaveFileTask.cancel(true);
}
mSaveFileTask = new SaveFileTask(mSourceFile, new File(mFileName));
mSaveFileTask.execute();
break;
}
case DialogInterface.BUTTON_NEGATIVE: {
break;
}
}
}
@Override
public void onCreate(final Bundle savedInstanceState) {
final String action = getIntent().getAction();
mCurrentDirectory = getExternalStorageDirectory();
final String source_filename = getIntent().getStringExtra(INTENT_KEY_FILE_SOURCE);
if (!INTENT_ACTION_SAVE_FILE.equals(action) || mCurrentDirectory == null || source_filename == null) {
finish();
return;
}
mSourceFile = new File(source_filename);
if (!mSourceFile.exists()) {
finish();
return;
}
super.onCreate(savedInstanceState);
setContentView(R.layout.file_save_as);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
mAdapter = new DirectoriesAdapter(this);
mListView = (ListView) findViewById(android.R.id.list);
mListView.setAdapter(mAdapter);
mListView.setOnItemClickListener(this);
invalidateSupportOptionsMenu();
mEditFileName = (EditText) findViewById(R.id.edit_file_name);
mEditFileName.setFilters(new InputFilter[] { VALID_FILENAME_FILTER });
mEditFileName.addTextChangedListener(this);
mDefaultFileName = getIntent().getStringExtra(INTENT_KEY_FILENAME);
mFileName = savedInstanceState != null ? savedInstanceState.getString(INTENT_KEY_FILENAME) : mDefaultFileName;
mEditFileName.setText(mFileName);
getSupportLoaderManager().initLoader(0, null, this);
}
@Override
public Loader<List<File>> onCreateLoader(final int id, final Bundle args) {
return new DirectoriesLoader(this, mCurrentDirectory);
}
@Override
public boolean onCreateOptionsMenu(final Menu menu) {
getMenuInflater().inflate(R.menu.menu_file_save_as, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public void onItemClick(final AdapterView<?> parent, final View view, final int position, final long id) {
mCurrentDirectory = mAdapter.getItem(position);
invalidateSupportOptionsMenu();
getSupportLoaderManager().restartLoader(0, null, this);
}
@Override
public void onLoaderReset(final Loader<List<File>> loader) {
mAdapter.setData(null);
}
@Override
public void onLoadFinished(final Loader<List<File>> loader, final List<File> data) {
mAdapter.setData(data);
}
@Override
public boolean onOptionsItemSelected(final MenuItem item) {
switch (item.getItemId()) {
case MENU_HOME: {
onBackPressed();
break;
}
case MENU_SAVE: {
if (mCurrentDirectory != null && mCurrentDirectory.isDirectory() && mCurrentDirectory.canWrite()) {
mFileName = mEditFileName != null ? mEditFileName.getText().toString() : null;
final int filename_length = mFileName != null ? mFileName.trim().length() : 0;
final int default_filename_length = mDefaultFileName != null ? mDefaultFileName.trim().length() : 0;
if (filename_length <= 0 && default_filename_length <= 0) return false;
if (filename_length <= 0 && default_filename_length >= 0) {
mFileName = mDefaultFileName;
}
final File destFile = new File(mCurrentDirectory, mFileName);
if (!destFile.isDirectory() && destFile.exists()) {
mOverwriteComfirmFragment.show(getSupportFragmentManager(), null);
} else {
if (mSaveFileTask != null) {
mSaveFileTask.cancel(true);
}
mSaveFileTask = new SaveFileTask(mSourceFile, destFile);
mSaveFileTask.execute();
}
}
break;
}
case MENU_CANCEL: {
setResult(RESULT_CANCELED);
finish();
}
}
return super.onOptionsItemSelected(item);
}
@Override
public boolean onPrepareOptionsMenu(final Menu menu) {
final MenuItem item = menu.findItem(MENU_SAVE);
if (item != null) {
final int filename_length = mEditFileName != null ? mEditFileName.getText().toString().trim().length() : 0;
final int default_filename_length = mDefaultFileName != null ? mDefaultFileName.trim().length() : 0;
item.setEnabled(mCurrentDirectory.canWrite() && (default_filename_length > 0 || filename_length > 0));
}
return super.onPrepareOptionsMenu(menu);
}
@Override
public void onTextChanged(final CharSequence s, final int start, final int before, final int count) {
invalidateSupportOptionsMenu();
}
@Override
protected void onSaveInstanceState(final Bundle outState) {
mFileName = mEditFileName != null ? mEditFileName.getText().toString() : null;
outState.putString(INTENT_KEY_FILENAME, mFileName);
super.onSaveInstanceState(outState);
}
public static class OverwriteComfirmFragment extends BaseDialogFragment {
@Override
public Dialog onCreateDialog(final Bundle savedInstanceState) {
final FileSaveAsActivity activity = (FileSaveAsActivity) getActivity();
final AlertDialog.Builder builder = new AlertDialog.Builder(activity);
builder.setMessage(R.string.overwrite_confirm);
builder.setPositiveButton(android.R.string.ok, activity);
builder.setNegativeButton(android.R.string.cancel, activity);
return builder.create();
}
}
public static class SaveProgressFragment extends BaseDialogFragment {
@Override
public Dialog onCreateDialog(final Bundle savedInstanceState) {
final FileSaveAsActivity activity = (FileSaveAsActivity) getActivity();
final ProgressDialog dialog = new ProgressDialog(activity);
dialog.setCancelable(false);
dialog.setMessage(getString(R.string.please_wait));
return dialog;
}
}
static class DirectoriesAdapter extends BaseAdapter {
private final LayoutInflater mInflater;
private final Context mContext;
private final List<File> mData = new ArrayList<File>();
public DirectoriesAdapter(final Context context) {
mInflater = LayoutInflater.from(context);
mContext = context;
}
@Override
public int getCount() {
return mData.size();
}
@Override
public File getItem(final int position) {
return mData.get(position);
}
@Override
public long getItemId(final int position) {
return getItem(position).hashCode();
}
@Override
public View getView(final int position, final View convertView, final ViewGroup parent) {
final View view = convertView != null ? convertView : mInflater.inflate(
android.R.layout.simple_list_item_1, parent, false);
final TextView text = (TextView) (view instanceof TextView ? view : view.findViewById(android.R.id.text1));
final File file = getItem(position);
if (file == null || text == null) return view;
text.setText(file.getName());
final int padding = (int) (4 * mContext.getResources().getDisplayMetrics().density);
text.setSingleLine(true);
text.setEllipsize(TruncateAt.MARQUEE);
text.setPadding(padding, padding, position, padding);
text.setCompoundDrawablesWithIntrinsicBounds(R.drawable.ic_folder, 0, 0, 0);
return view;
}
public void setData(final List<File> data) {
mData.clear();
if (data != null) {
mData.addAll(data);
}
notifyDataSetChanged();
}
}
static class DirectoriesLoader extends AsyncTaskLoader<List<File>> {
private final File path;
private static final Comparator<File> NAME_COMPARATOR = new Comparator<File>() {
@Override
public int compare(final File file1, final File file2) {
return file1.getName().compareTo(file2.getName());
}
};
public DirectoriesLoader(final Context context, final File path) {
super(context);
this.path = path;
}
@Override
public List<File> loadInBackground() {
final List<File> directories_list = new ArrayList<File>();
if (path != null && path.isDirectory()) {
final File[] files = path.listFiles();
if (files != null) {
for (final File file : files) {
if (file.isDirectory() && file.canRead()) {
directories_list.add(file);
}
}
}
Collections.sort(directories_list, NAME_COMPARATOR);
}
return directories_list;
}
@Override
protected void onStartLoading() {
forceLoad();
}
@Override
protected void onStopLoading() {
cancelLoad();
}
}
class SaveFileTask extends AsyncTask<Void, Void, Boolean> {
private final File src, dst;
public SaveFileTask(final File src, final File dst) {
this.src = src;
this.dst = dst;
}
@Override
protected Boolean doInBackground(final Void... args) {
if (src == null || dst == null) return false;
try {
if (dst.isDirectory()) {
FileUtils.copyFileToDirectory(src, dst);
} else {
FileUtils.copyFile(src, dst);
}
} catch (final IOException e) {
return false;
} catch (final Exception e) {
return null;
}
return true;
}
@Override
protected void onCancelled() {
mSaveProgressFragment.dismiss();
super.onCancelled();
}
@Override
protected void onPostExecute(final Boolean result) {
mSaveProgressFragment.dismiss();
super.onPostExecute(result);
if (result != null) {
if (result) {
Toast.makeText(FileSaveAsActivity.this, getString(R.string.file_saved_to, dst.getPath()),
Toast.LENGTH_SHORT).show();
finish();
}
}
}
@Override
protected void onPreExecute() {
mSaveProgressFragment.show(getSupportFragmentManager(), null);
super.onPreExecute();
}
}
}