/*
* Copyright (C) 2016 Ferid Cafer
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.ferid.app.classroom.edit;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.inputmethod.InputMethodManager;
import android.widget.TextView;
import com.ferid.app.classroom.R;
import com.ferid.app.classroom.adapters.EditClassroomsAdapter;
import com.ferid.app.classroom.database.DatabaseManager;
import com.ferid.app.classroom.enums.ClassroomPopup;
import com.ferid.app.classroom.listeners.AdapterClickListener;
import com.ferid.app.classroom.listeners.OnAlertClick;
import com.ferid.app.classroom.listeners.PopupClickListener;
import com.ferid.app.classroom.listeners.PromptListener;
import com.ferid.app.classroom.material_dialog.CustomAlertDialog;
import com.ferid.app.classroom.material_dialog.PromptDialog;
import com.ferid.app.classroom.model.Classroom;
import java.util.ArrayList;
/**
* Created by ferid.cafer on 4/15/2015.<br />
* Adds and removes classes.
*/
public class EditClassroomFragment extends Fragment {
private Context context;
private SwipeRefreshLayout swipeRefreshLayout;
private RecyclerView list;
private ArrayList<Classroom> arrayList = new ArrayList<>();
private EditClassroomsAdapter adapter;
private TextView emptyText; //empty list view text
public EditClassroomFragment() {}
public static EditClassroomFragment newInstance() {
EditClassroomFragment editClassroomFragment = new EditClassroomFragment();
return editClassroomFragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// retain this fragment
setRetainInstance(true);
}
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
@Nullable Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.refreshable_list, container, false);
context = rootView.getContext();
list = (RecyclerView) rootView.findViewById(R.id.list);
adapter = new EditClassroomsAdapter(context, arrayList);
list.setAdapter(adapter);
list.setLayoutManager(new LinearLayoutManager(context));
list.setHasFixedSize(true);
emptyText = (TextView) rootView.findViewById(R.id.emptyText);
swipeRefreshLayout = (SwipeRefreshLayout) rootView.findViewById(R.id.swipeRefreshLayout);
swipeRefreshLayout.setColorSchemeResources(android.R.color.holo_blue_bright,
android.R.color.holo_green_light,
android.R.color.holo_orange_light,
android.R.color.holo_red_light);
swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
new SelectClassrooms().execute();
}
});
addAdapterClickListener();
addPopupClickListener();
new SelectClassrooms().execute();
return rootView;
}
/**
* Set empty list text
*/
private void setEmptyText() {
if (emptyText != null) {
if (arrayList.isEmpty()) {
emptyText.setVisibility(View.VISIBLE);
} else {
emptyText.setVisibility(View.GONE);
}
}
}
/**
* Check if the given classroom name already exists
* @param classroomName Selected classroom
* @return
*/
private boolean isAlreadyExist(String classroomName) {
boolean isAlreadyExist = false;
for (Classroom classroom : arrayList) {
if (classroom.getName().equals(classroomName)) {
isAlreadyExist = true;
break;
}
}
return isAlreadyExist;
}
/**
* Add new class item
*/
public void addClassroom() {
final PromptDialog promptDialog = new PromptDialog(context);
promptDialog.setPositiveButton(getString(R.string.ok));
promptDialog.setAllCaps();
promptDialog.setAlphanumeric();
promptDialog.setOnPositiveClickListener(new PromptListener() {
@Override
public void OnPrompt(String promptText) {
closeKeyboard();
promptDialog.dismiss();
if (!TextUtils.isEmpty(promptText)) {
if (!isAlreadyExist(promptText)) {
new InsertClassroom().execute(promptText);
} else {
//alert
CustomAlertDialog customAlertDialog = new CustomAlertDialog(context);
customAlertDialog.setMessage(getString(R.string.couldNotInsertClassroom));
customAlertDialog.setPositiveButtonText(getString(R.string.ok));
customAlertDialog.showDialog();
}
}
}
});
promptDialog.show();
}
/**
* Change the selected class name
* @param classroomId current classroom to be changed
* @param content current name of the classroom
*/
public void editClassroom(final int classroomId, String content) {
final PromptDialog promptDialog = new PromptDialog(context);
promptDialog.setContent(content);
promptDialog.setPositiveButton(getString(R.string.ok));
promptDialog.setAllCaps();
promptDialog.setAlphanumeric();
promptDialog.setOnPositiveClickListener(new PromptListener() {
@Override
public void OnPrompt(String promptText) {
closeKeyboard();
promptDialog.dismiss();
if (!TextUtils.isEmpty(promptText)) {
new UpdateClassroom().execute(String.valueOf(classroomId), promptText);
}
}
});
promptDialog.show();
}
/**
* Delete classroom
* @param classroom Selected classroom
*/
private void deleteClassroom(final Classroom classroom) {
//show alert before deleting
CustomAlertDialog customAlertDialog = new CustomAlertDialog(context);
customAlertDialog.setMessage(classroom.getName()
+ getString(R.string.sureToDelete));
customAlertDialog.setPositiveButtonText(getString(R.string.delete));
customAlertDialog.setNegativeButtonText(getString(R.string.cancel));
customAlertDialog.setOnClickListener(new OnAlertClick() {
@Override
public void OnPositive() {
new DeleteClassroom().execute(classroom.getId());
}
@Override
public void OnNegative() {
//do nothing
}
});
customAlertDialog.showDialog();
}
/**
* Go inside classroom to add, change or delete students
* @param classroom
*/
private void showStudents(Classroom classroom) {
Intent intent = new Intent(context, EditStudentActivity.class);
intent.putExtra("classroom", classroom);
startActivity(intent);
getActivity().overridePendingTransition(R.anim.move_in_from_bottom,
R.anim.stand_still);
}
/**
* List item click event
*/
private void addAdapterClickListener() {
adapter.setAdapterClickListener(new AdapterClickListener() {
@Override
public void OnItemClick(int position) {
if (arrayList != null && arrayList.size() > position) {
showStudents(arrayList.get(position));
}
}
});
}
/**
* Pop-up menu item click event
*/
public void addPopupClickListener() {
adapter.setPopupClickListener(new PopupClickListener() {
@Override
public void OnPopupClick(int itemPosition, int menuPosition) {
if (arrayList != null && arrayList.size() > itemPosition) {
Classroom classroom = arrayList.get(itemPosition);
if (menuPosition == ClassroomPopup.CHANGE_NAME.getValue()) {
editClassroom(classroom.getId(), classroom.getName());
} else if (menuPosition == ClassroomPopup.DELETE_CLASSROOM.getValue()) {
deleteClassroom(classroom);
}
}
}
});
}
/**
* Select classrooms from DB
*/
private class SelectClassrooms extends AsyncTask<Void, Void, ArrayList<Classroom>> {
@Override
protected void onPreExecute() {
swipeRefreshLayout.setRefreshing(true);
}
@Override
protected ArrayList<Classroom> doInBackground(Void... params) {
DatabaseManager databaseManager = new DatabaseManager(context);
ArrayList<Classroom> tmpList = databaseManager.selectClassrooms();
return tmpList;
}
@Override
protected void onPostExecute(ArrayList<Classroom> tmpList) {
swipeRefreshLayout.setRefreshing(false);
arrayList.clear();
if (tmpList != null) {
arrayList.addAll(tmpList);
adapter.notifyDataSetChanged();
setEmptyText();
}
}
}
/**
* Insert classroom name into DB
*/
private class InsertClassroom extends AsyncTask<String, Void, Boolean> {
@Override
protected Boolean doInBackground(String... params) {
String classroom = params[0];
DatabaseManager databaseManager = new DatabaseManager(context);
boolean isSuccessful = databaseManager.insertClassroom(classroom);
return isSuccessful;
}
@Override
protected void onPostExecute(Boolean isSuccessful) {
if (isSuccessful) {
new SelectClassrooms().execute();
}
}
}
/**
* Update classroom name in the DB
*/
private class UpdateClassroom extends AsyncTask<String, Void, Boolean> {
@Override
protected Boolean doInBackground(String... params) {
String classroomId = params[0];
String newName = params[1];
DatabaseManager databaseManager = new DatabaseManager(context);
boolean isSuccessful = databaseManager.updateClassroomName(classroomId, newName);
return isSuccessful;
}
@Override
protected void onPostExecute(Boolean isSuccessful) {
if (isSuccessful) {
new SelectClassrooms().execute();
}
}
}
/**
* Delete a classroom item from DB
*/
private class DeleteClassroom extends AsyncTask<Integer, Void, Boolean> {
@Override
protected Boolean doInBackground(Integer... params) {
int classroomId = params[0];
DatabaseManager databaseManager = new DatabaseManager(context);
boolean isSuccessful = databaseManager.deleteClassroom(classroomId);
return isSuccessful;
}
@Override
protected void onPostExecute(Boolean isSuccessful) {
if (isSuccessful) {
new SelectClassrooms().execute();
}
}
}
/**
* Closes keyboard for disabling interruption
*/
private void closeKeyboard(){
try {
InputMethodManager imm = (InputMethodManager)
getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(getActivity().getCurrentFocus().getWindowToken(),
InputMethodManager.HIDE_NOT_ALWAYS);
} catch (Exception ignored) {}
}
}