FBReaderJ/src/org/geometerplus/android/util/FolderListDialogActivity.java

/*
 * Copyright (C) 2010-2014 Geometer Plus <contact@geometerplus.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 2 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

package org.geometerplus.android.util;

import java.util.ArrayList;

import android.os.*;
import android.app.*;
import android.content.*;
import android.widget.*;
import android.view.*;

import org.geometerplus.zlibrary.core.resources.ZLResource;
import org.geometerplus.zlibrary.ui.android.R;
import org.geometerplus.android.util.FileChooserUtil;

public class FolderListDialogActivity extends Activity{
	private final int ADD_NEW_DIR_POSITION = 0;
	public static final String TITLE = "dir_manager_title";
	public static final String CHOOSER_TITLE = "chooser_title";
	public static final String DIR_LIST = "dir_list";
	public static final String WRITABLE_DIRS_ONLY = "writable_dirs_only";

	private DirectoriesAdapter myAdapter;
	private ListView myListView;
	private String myDefaultDir = "/";
	private ArrayList<String> myDirList;
	private String myChooserTitle;
	private String myTitle;
	private int myAddNewDirPosition = 0;
	private ZLResource myResource;
	private boolean myChooseWritableDirectoriesOnly;

	public void onCreate(Bundle savedInstanceState){
		super.onCreate(savedInstanceState);
		setContentView(R.layout.dir_manager);

		myTitle = getIntent().getStringExtra(TITLE);
		myChooserTitle = getIntent().getStringExtra(CHOOSER_TITLE);
		myDirList = getIntent().getStringArrayListExtra(DIR_LIST);
		myChooseWritableDirectoriesOnly = getIntent().getBooleanExtra(WRITABLE_DIRS_ONLY, true);

		setTitle(myTitle);

		myResource = ZLResource.resource("dialog").getResource("folderList");

		setupActionButtons();
		myListView = (ListView) findViewById(R.id.directories);

		myDirList.add(ADD_NEW_DIR_POSITION, myResource.getResource("addFolder").getValue());
		setupDirectoriesAdapter(myDirList);
	}

	private void openFileChooser(int index, String dirName){
		FileChooserUtil.runDirectoryChooser(
			this,
			index,
			myChooserTitle,
			dirName,
			myChooseWritableDirectoriesOnly
		);
	}

	private void showMessage(String msg){
		Toast.makeText(this, msg, Toast.LENGTH_SHORT).show();
	}

	private void updateDirs(int index, Intent data){
		String path = FileChooserUtil.pathFromData(data);
		if(!myDirList.contains(path)){
			myDirList.remove(index);
			myDirList.add(index, path);
			myAdapter.notifyDataSetChanged();
		} else {
			showMessage(myResource.getResource("duplicate").getValue().replace("%s", path));
		}
	}

	private void addNewDir(Intent data){
		String path = FileChooserUtil.pathFromData(data);
		if(!myDirList.contains(path)){
			myDirList.add(FileChooserUtil.pathFromData(data));
			myAdapter.notifyDataSetChanged();
		} else {
			showMessage(myResource.getResource("duplicate").getValue().replace("%s", path));
		}
	}

	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		if (resultCode == RESULT_OK) {
			if(requestCode != ADD_NEW_DIR_POSITION){
				updateDirs(requestCode, data);
			} else{
				addNewDir(data);
			}
		}
	}

	private void setupDirectoriesAdapter(ArrayList<String> dirs){
		myAdapter = new DirectoriesAdapter(this, dirs);
		myListView.setAdapter(myAdapter);
		myListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
				@Override
				public void onItemClick(AdapterView<?> parent, final View view, int position, long id) {
					String dirName = (String) parent.getItemAtPosition(position);
					if(position <= 0){
						dirName = myDefaultDir;
					}
					openFileChooser(position, dirName);
				}
		});
	}

	private void setupActionButtons() {
		final ZLResource buttonResource = ZLResource.resource("dialog").getResource("button");
		final Button okButton = (Button)findViewById(R.id.button_ok);
		okButton.setText(buttonResource.getResource("ok").getValue());
		okButton.setOnClickListener(new View.OnClickListener() {
			public void onClick(View v) {
				myDirList.remove(0);
				Intent result = new Intent();
				result.putStringArrayListExtra(DIR_LIST, myDirList);
				setResult(RESULT_OK, result);
				finish();
			}
		});
		final Button cancelButton = (Button)findViewById(R.id.button_cancel);
		cancelButton.setText(buttonResource.getResource("cancel").getValue());
		cancelButton.setOnClickListener(new View.OnClickListener() {
			public void onClick(View v) {
				setResult(RESULT_CANCELED);
				finish();
			}
		});
	}

	private class DirectoriesAdapter extends ArrayAdapter<String>{
		public DirectoriesAdapter(Context context, ArrayList<String> dirs){
			super(context, R.layout.dir_list, dirs);
		}

		private void removeItemView(final View view, final int position){
			if (view != null && position < getCount()) {
				myDirList.remove(position);
				myAdapter.notifyDataSetChanged();
			}
		}

		@Override
		public View getView (final int position, View convertView, ViewGroup parent){
			final View view = LayoutInflater.from(getContext()).inflate(R.layout.dir_list, parent, false);

			final String dirName = (String) getItem(position);

			TextView title = (TextView) view.findViewById(R.id.title);
			title.setText(dirName);
			ImageView deleteButton = (ImageView) view.findViewById(R.id.delete);

			if (position != ADD_NEW_DIR_POSITION) {
				deleteButton.setVisibility(View.VISIBLE);
				deleteButton.setOnClickListener(new View.OnClickListener() {
					public void onClick(final View v) {
						final ZLResource buttonResource = ZLResource.resource("dialog").getResource("button");
						final ZLResource removeDialogResource = myResource.getResource("removeDialog");
						new AlertDialog.Builder(getContext())
							.setCancelable(false)
							.setTitle(removeDialogResource.getValue())
							.setMessage(removeDialogResource.getResource("message").getValue().replace("%s", dirName))
							.setPositiveButton(buttonResource.getResource("yes").getValue(), new DialogInterface.OnClickListener() {
								public void onClick(DialogInterface dialog,int id) {
									removeItemView(v, position);
								}
							})
							.setNegativeButton(buttonResource.getResource("cancel").getValue(), new DialogInterface.OnClickListener() {
								public void onClick(DialogInterface dialog,int id) {
									dialog.cancel();
								}
							}).create().show();
					}
				});
			} else {
				deleteButton.setVisibility(View.INVISIBLE);
			}

			return view;
		}
	}
}