NoteBookFragment.java

package com.marktony.translator.ui;

import android.content.ClipData;
import android.content.ClipboardManager;
import android.content.ContentValues;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.design.widget.TextInputEditText;
import android.support.v4.app.Fragment;
import android.support.v7.app.AlertDialog;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.marktony.translator.R;
import com.marktony.translator.adapter.NotebookMarkItemAdapter;
import com.marktony.translator.db.DBUtil;
import com.marktony.translator.db.NotebookDatabaseHelper;
import com.marktony.translator.interfaze.OnRecyclerViewOnClickListener;
import com.marktony.translator.model.NotebookMarkItem;

import java.util.ArrayList;
import java.util.Collections;

import static android.content.Context.CLIPBOARD_SERVICE;

/**
 * Created by lizhaotailang on 2016/7/12.
 */

public class NoteBookFragment extends Fragment {

    private RecyclerView recyclerViewNotebook;
    private FloatingActionButton fab;
    private ArrayList<NotebookMarkItem> list = new ArrayList<NotebookMarkItem>();
    private NotebookMarkItemAdapter adapter;
    private TextView tvNoNote;

    private NotebookDatabaseHelper dbHelper;

    public NoteBookFragment(){

    }

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        dbHelper = new NotebookDatabaseHelper(getActivity(),"MyStore.db",null,1);
    }

    @Nullable
    @Override
    public View onCreateView(final LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_notebook,container,false);

        initViews(view);

        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                final AlertDialog dialog = new AlertDialog.Builder(getActivity()).create();
                dialog.setTitle(R.string.add_to_notebook);
                LayoutInflater li = getActivity().getLayoutInflater();
                final View v = li.inflate(R.layout.add_note,null);
                dialog.setView(v);

                dialog.setButton(DialogInterface.BUTTON_POSITIVE, getString(R.string.OK), new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialogInterface, int i) {

                        TextInputEditText etInput = (TextInputEditText) v.findViewById(R.id.et_input);
                        TextInputEditText etOutput = (TextInputEditText) v.findViewById(R.id.et_output);

                        String in = etInput.getText().toString();
                        String out = etOutput.getText().toString();

                        if (in.isEmpty() || out.isEmpty()){

                            Snackbar.make(fab, R.string.no_input, Snackbar.LENGTH_SHORT).show();

                        } else {

                            if (tvNoNote.getVisibility() == View.VISIBLE){
                                tvNoNote.setVisibility(View.GONE);
                            }

                            NotebookMarkItem item = new NotebookMarkItem(in,out);

                            ContentValues values = new ContentValues();
                            values.put("input",in);
                            values.put("output",out);

                            DBUtil.insertValue(dbHelper,values);

                            values.clear();

                            list.add(0,item);
                            adapter.notifyItemInserted(0);
                            recyclerViewNotebook.smoothScrollToPosition(0);
                        }


                    }
                });

                dialog.setButton(DialogInterface.BUTTON_NEGATIVE, getString(R.string.cancel) , new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialogInterface, int i) {

                    }
                });

                dialog.show();
            }
        });

        getDataFromDB();

        if (list.isEmpty()){
            tvNoNote.setVisibility(View.VISIBLE);
        }

        Collections.reverse(list);
        adapter = new NotebookMarkItemAdapter(getActivity(),list);
        recyclerViewNotebook.setAdapter(adapter);
        adapter.setItemClickListener(new OnRecyclerViewOnClickListener() {

            @Override
            public void OnItemClick(View view, int position) {

            }

            @Override
            public void OnSubViewClick(View view, final int position) {

                switch (view.getId()){

                    case R.id.image_view_share:

                        NotebookMarkItem item1 = list.get(position);

                        Intent intent = new Intent();
                        intent.setAction(Intent.ACTION_SEND).setType("text/plain");
                        intent.putExtra(Intent.EXTRA_TEXT,String.valueOf(item1.getInput() + "\n" + item1.getOutput()));
                        startActivity(Intent.createChooser(intent,getString(R.string.choose_app_to_share)));

                        break;

                    case R.id.image_view_copy:

                        NotebookMarkItem item2 = list.get(position);

                        ClipboardManager manager = (ClipboardManager) getActivity().getSystemService(CLIPBOARD_SERVICE);
                        ClipData clipData = ClipData.newPlainText("text", String.valueOf(item2.getInput() + "\n" + item2.getOutput()));
                        manager.setPrimaryClip(clipData);

                        Snackbar.make(fab, R.string.copy_done, Snackbar.LENGTH_SHORT).show();

                        break;

                    case R.id.image_view_mark_star:

                        final NotebookMarkItem item3 = list.get(position);

                        DBUtil.deleteValue(dbHelper,item3.getInput());

                        list.remove(position);

                        adapter.notifyItemRemoved(position);
                        adapter.notifyItemRangeChanged(position,list.size());

                        Snackbar.make(fab, R.string.remove_from_notebook, Snackbar.LENGTH_SHORT)
                                .setAction(R.string.undo, new View.OnClickListener() {
                                    @Override
                                    public void onClick(View v) {
                                        ContentValues values = new ContentValues();
                                        values.put("input",item3.getInput());
                                        values.put("output",item3.getOutput());

                                        DBUtil.insertValue(dbHelper,values);

                                        values.clear();

                                        list.add(position,item3);
                                        adapter.notifyItemInserted(position);
                                        recyclerViewNotebook.smoothScrollToPosition(position);
                                    }
                                }).show();

                        break;

                    default:
                        break;
                }
            }
        });

        return view;
    }

    private void initViews(View view) {

        recyclerViewNotebook = (RecyclerView) view.findViewById(R.id.recycler_view_notebook);
        recyclerViewNotebook.setLayoutManager(new LinearLayoutManager(getActivity()));

        fab = (FloatingActionButton) view.findViewById(R.id.fab);

        tvNoNote = (TextView) view.findViewById(R.id.tv_no_note);

    }

    @Override
    public void onResume() {
        super.onResume();
        getDataFromDB();
        if (adapter != null) {
            adapter.notifyDataSetChanged();
        }
    }

    @Override
    public void onHiddenChanged(boolean hidden) {
        super.onHiddenChanged(hidden);
        getDataFromDB();
    }

    private void getDataFromDB() {
        if (list != null) {
            list.clear();
        }
        SQLiteDatabase db = dbHelper.getReadableDatabase();
        Cursor cursor = db.query("notebook",null,null,null,null,null,null);
        if (cursor.moveToFirst()){
            do {
                String in = cursor.getString(cursor.getColumnIndex("input"));
                String out = cursor.getString(cursor.getColumnIndex("output"));

                NotebookMarkItem item = new NotebookMarkItem(in,out);
                list.add(item);

            } while (cursor.moveToNext());
        }

        cursor.close();
    }

}