Android Open Source - webots-remote-control Connection Fragment

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Back to project page webots-remote-control.
License

The source code is released under:
GNU Lesser General Public License
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Java Source Code

package org.black_mesa.webots_remote_control.activities;
//  w  ww . ja  v  a 2 s. c o  m
import java.util.List;

import org.black_mesa.webots_remote_control.R;
import org.black_mesa.webots_remote_control.client.ConnectionState;
import org.black_mesa.webots_remote_control.database.DataSource;
import org.black_mesa.webots_remote_control.database.Server;
import org.black_mesa.webots_remote_control.database.ServerListAdapter;
import org.black_mesa.webots_remote_control.listeners.ConnectionManagerListener;
import org.black_mesa.webots_remote_control.listeners.OnListEventsListener;

import android.app.ListFragment;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;

public class ConnectionFragment extends ListFragment implements OnListEventsListener, ConnectionManagerListener {
  private DataSource mDatasource;
  private ServerListAdapter mAdapter;
  private List<Server> mServers;
  private Menu mMenu;

  // Activity lifecycle

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

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    return inflater.inflate(R.layout.connexion_fragment, container, false);
  }

  @Override
  public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    // Initiate database
    mDatasource = new DataSource(getActivity());
    mDatasource.open();

    mServers = mDatasource.getAllServers();

    MainActivity.CONNECTION_MANAGER.addListener(this);
  }

  @Override
  public void onPause() {
    mDatasource.close();
    super.onPause();
  }

  @Override
  public void onResume() {
    super.onResume();
    mDatasource.open();
    updateView();
  }

  @Override
  public void onPrepareOptionsMenu(Menu menu) {
    super.onPrepareOptionsMenu(menu);
    menu.clear();
    getActivity().getMenuInflater().inflate(R.menu.connexion, menu);
    mMenu = menu;
    updateMenu(false);
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case R.id.connexion_add:
      Intent i = new Intent(getActivity(), AddServerActivity.class);
      startActivity(i);
      break;
    case R.id.server_delete:
      deleteSelection();
      break;
    case R.id.server_edit:
      editServer();
      break;
    default:
      break;
    }
    return super.onOptionsItemSelected(item);
  }

  // OnListEventsListener

  @Override
  public void onCheckChanged() {
    updateMenu(true);
  }

  @Override
  public void onItemClicked() {
    clearChecks();
    updateMenu(true);
  }

  @Override
  public void onItemLongClicked() {
    // TODO Nothing to do here
    // updateMenu(true);
  }

  @Override
  public void onItemLaunchListener(Server s) {
    if (MainActivity.CONNECTED_SERVERS.contains(s)) {
      mAdapter.setServerDisconnected(s.getId());
      ((MainActivity) getActivity()).disconnect(s);
    } else {
      mAdapter.setServerConnected(s.getId());
      ((MainActivity) getActivity()).connect(s);
    }
    updateMenu(true);
  }

  // ConnectionManagerListener

  @Override
  public void onStateChange(Server server, ConnectionState state) {
    int i = mServers.indexOf(server);
    Log.i(getClass().getName(), "State Change : " + i);
    switch (state) {
    case CONNECTED:
      Log.i(getClass().getName(), "Connected");
      mAdapter.setServerConnected(server.getId());
      updateMenu(false);
      break;
    case COMMUNICATION_ERROR:
    case CONNECTION_ERROR:
      mAdapter.setServerDisconnected(server.getId());
    default:
      updateMenu(true);
      break;
    }

  }

  // Private methods

  private void clearChecks() {
    for (int i = 0; i < getListView().getChildCount(); i++) {
      ((CheckBox) getListView().getChildAt(i).findViewById(R.id.server_select)).setChecked(false);
    }

  }

  private void updateView() {
    Log.i(getClass().getName(), "Update View");
    mServers = mDatasource.getAllServers();
    mAdapter = new ServerListAdapter(getActivity(), mServers, MainActivity.CONNECTED_SERVERS, this);
    setListAdapter(mAdapter);
  }

  private void deleteSelection() {
    for (Server s : mAdapter.getCheckedServers()) {
      mDatasource.deleteServer(s);
    }
    updateView();
    updateMenu(false);
  }

  private void editServer() {
    Bundle b = new Bundle();
    Intent intent = new Intent(getActivity(), AddServerActivity.class);
    List<Server> checkedServers = mAdapter.getCheckedServers();
    if (!checkedServers.isEmpty()) {
      b.putLong("id", checkedServers.get(0).getId());
      intent.putExtras(b);
      startActivity(intent);
    }
  }

  private int countChecks() {
    int i = 0;
    for (int j = 0; j < getListView().getChildCount(); j++) {
      if (((CheckBox) getListView().getChildAt(j).findViewById(R.id.server_select)).isChecked()) {
        i++;
      }
    }
    return i;
  }

  private void updateMenu(boolean isSelection) {
    if (MainActivity.CONNECTED_SERVERS.isEmpty()) {
      if (isSelection) {
        int i = countChecks();
        switch (i) {
        case 0:
          updateMenu(false);
          break;
        case 1:
          mMenu.getItem(0).setVisible(true);
          mMenu.getItem(1).setVisible(true);
          mMenu.getItem(2).setVisible(false);
          break;
        default:
          mMenu.getItem(0).setVisible(false);
          mMenu.getItem(1).setVisible(true);
          mMenu.getItem(2).setVisible(false);
        }
      } else {
        mMenu.getItem(0).setVisible(false);
        mMenu.getItem(1).setVisible(false);
        mMenu.getItem(2).setVisible(true);
      }
    } else {
      mMenu.getItem(0).setVisible(false);
      mMenu.getItem(1).setVisible(false);
      mMenu.getItem(2).setVisible(false);
    }
  }
}
Java Source Code List
