hu.naturlecso.naturshutd.CommandsFragment.java Source code

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Here is the source code for hu.naturlecso.naturshutd.CommandsFragment.java

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/*
 * Copyright (C) 2013 Jozsef Szilvasi <jozsef.szilvasi@gmail.com>
 * 
 * This file is part of NaturShutd.
 *
 * NaturShutd 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.
 *
 * NaturShutd 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 NaturShutd.  If not, see <http://www.gnu.org/licenses/>. 
 */

package hu.naturlecso.naturshutd;

import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.widget.DefaultItemAnimator;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;

import butterknife.ButterKnife;
import butterknife.InjectView;
import butterknife.OnClick;
import hu.naturlecso.naturshutd.adapter.CommandsRecyclerAdapter;
import hu.naturlecso.naturshutd.model.Command;
import hu.naturlecso.naturshutd.model.Host;
import hu.naturlecso.naturshutd.network.SshService;
import ollie.query.Select;
import rx.Observable;
import rx.android.app.AppObservable;
import rx.android.schedulers.AndroidSchedulers;
import rx.schedulers.Schedulers;

public class CommandsFragment extends Fragment implements CommandsRecyclerAdapter.ButtonListener {
    public static final String TAG = CommandsFragment.class.getSimpleName();

    public static final String HOST_ID = "host_id";
    private static final long INVALID_ID = -1L;

    private Callbacks callbacks;
    private CommandsRecyclerAdapter adapter;

    public interface Callbacks {
        void onEditHost(Long id);

        void onEditCommand(long hostId, Long commandId);
    }

    @InjectView(R.id.command_list)
    View listView;

    @InjectView(R.id.command_empty)
    TextView emptyView;

    @InjectView(R.id.command_recyclerview)
    RecyclerView recyclerView;

    private long hostId;

    public CommandsFragment() {
    }

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

        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getActivity());
        hostId = sp.getLong(HOST_ID, INVALID_ID);

        adapter = new CommandsRecyclerAdapter(this);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_commands, container, false);
        ButterKnife.inject(this, rootView);
        return rootView;
    }

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        setHasOptionsMenu(true);

        recyclerView.setHasFixedSize(true);
        recyclerView.setAdapter(adapter);
        recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
        recyclerView.setItemAnimator(new DefaultItemAnimator());

        Select.from(Command.class).observable().flatMap(Observable::from).map(command -> command.id)
                .subscribe(commandId -> adapter.add(commandId, adapter.getItemCount()));
    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();
        ButterKnife.reset(this);
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        try {
            callbacks = (Callbacks) activity;
        } catch (ClassCastException e) {
            throw new ClassCastException(activity.toString() + " must implement " + TAG + ".Callbacks!");
        }
    }

    @Override
    public void onResume() {
        super.onResume();
        toggleEmptyViewVisibility();
        ((ActionBarActivity) getActivity()).getSupportActionBar().setTitle(Host.find(Host.class, hostId).name);
    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        inflater.inflate(R.menu.fragment_action, menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case R.id.menu_action_manage:
            callbacks.onEditHost(hostId);
            return true;
        default:
            break;
        }
        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onCommandItemEditClicked(int position) {
        callbacks.onEditCommand(hostId, adapter.getCommandId(position));
    }

    @Override
    public void onCommandItemExecuteClicked(int position) {
        // TODO execute command
        AppObservable.bindFragment(this, new SshService().executeCommand(hostId, adapter.getCommandId(position)))
                .subscribeOn(Schedulers.newThread()).observeOn(AndroidSchedulers.mainThread())
                .subscribe(s -> Toast.makeText(getActivity(), s, Toast.LENGTH_SHORT).show(), throwable -> Toast
                        .makeText(getActivity(), throwable.getMessage(), Toast.LENGTH_SHORT).show());
    }

    @OnClick(R.id.command_empty)
    public void onClickEmptyView() {
        callbacks.onEditHost(null);
    }

    @OnClick(R.id.command_fab)
    public void onClickAddCommand() {
        callbacks.onEditCommand(hostId, null);
    }

    /**
     * Update host object in fragment
     * @param id host id
     */
    protected void updateHost(long id) {
        hostId = id;
    }

    protected void addCommand(long id) {
        adapter.add(id, 0);
    }

    protected void deleteCommand(long id) {
        adapter.remove(id);
    }

    protected void updateCommand(long id) {
        adapter.update(id);
    }

    private void toggleEmptyViewVisibility() {
        Integer count = Select.columns("COUNT(*)").from(Host.class).fetchValue(Integer.class);

        if (count < 1) {
            listView.setVisibility(View.INVISIBLE);
            emptyView.setVisibility(View.VISIBLE);
        } else {
            listView.setVisibility(View.VISIBLE);
            emptyView.setVisibility(View.INVISIBLE);
        }
    }
}