Android Open Source - irma_android_management Menu Fragment

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Back to project page irma_android_management.

License

The source code is released under:

GNU General Public License

Java Source Code

package org.irmacard.androidmanagement;
/*from  w  w w. ja  va2 s  .  c o m*/
import java.util.ArrayList;

import org.irmacard.android.util.credentials.AndroidWalker;
import org.irmacard.android.util.credentials.CredentialPackage;
import org.irmacard.androidmanagement.adapters.CredentialListAdapter;
import org.irmacard.credentials.info.DescriptionStore;
import org.irmacard.credentials.info.InfoException;

import android.app.Activity;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;

public class MenuFragment extends Fragment {  
  private CredentialListAdapter listAdapter;
  private ArrayList<CredentialPackage> credentials = null;
  private ListView listView;
  private View rootView;
  private Button log_button;
  private Button settings_button;
  private boolean mTwoPane;

  /**
   * The fragment's current callback object, which is notified of list item
   * clicks.
   */
  private Callbacks mCallbacks = sDummyCallbacks;

  /**
   * A callback interface that all activities containing this fragment must
   * implement. This mechanism allows activities to be notified of item
   * selections, as well as the pressing of log and settings buttons.
   */
  public interface Callbacks {
    /**
     * Callback for when an item has been selected.
     */
    public void onItemSelected(short id);

    /**
     * Callback for when log button has been selected
     */
    public void onLogSelected();

    /**
     * Callback for when the settings button has been selected
     */
    public void onSettingsSelected();
  }

  /**
   * A dummy implementation of the {@link Callbacks} interface that does
   * nothing. Used only when this fragment is not attached to an activity.
   */
  private static Callbacks sDummyCallbacks = new Callbacks() {
    @Override
    public void onItemSelected(short id) {}

    @Override
    public void onLogSelected() {}

    @Override
    public void onSettingsSelected() {}
  };

  /**
   * Mandatory empty constructor for the fragment manager to instantiate the
   * fragment (e.g. upon screen orientation changes).
   */
  public MenuFragment() {
  }

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Log.i("menu", "On Create on MenuFragment Called");

      AndroidWalker aw = new AndroidWalker(getResources().getAssets());
      DescriptionStore.setTreeWalker(aw);

      try {
      DescriptionStore.getInstance();
    } catch (InfoException e) {
      // TODO Auto-generated catch block
      Log.e("error", "something went wrong");
      e.printStackTrace();
    }

      credentials = ((CredentialListActivity) getActivity()).getCredentials();
    if (credentials == null) {
      Log.i("blaat", "No credentials available yet");
    } else {
      for (CredentialPackage cp : credentials) {
        Log.i("blaat", cp.toString());
      }
    }

      listAdapter = new CredentialListAdapter(getActivity(), credentials);
      
      Log.i("menu", "On create of menu fragment finished");
  }
  
  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
      Bundle savedInstanceState) {
    Log.i("menu", "Inflating fragment layout");
    rootView = inflater.inflate(R.layout.fragment_menu,
        container, false);

    setNoItemsIfNecessary();

    Log.i("menu", "Done inflating fragment layout");

    mTwoPane = rootView.findViewById(R.id.credential_menu_log_button ) != null;
    return rootView;
  }

  private void setNoItemsIfNecessary() {
    ListView list = (ListView) rootView.findViewById(R.id.credential_menu_list);
    TextView no_items = (TextView) rootView.findViewById(R.id.credentials_menu_no_creds);

    if(credentials == null || credentials.isEmpty()) {
      list.setVisibility(View.INVISIBLE);
      no_items.setVisibility(View.VISIBLE);
    } else {
      list.setVisibility(View.VISIBLE);
      no_items.setVisibility(View.INVISIBLE);
    }
  }
  
  public void onViewCreated(View view, Bundle savedInstanceState) {
    listView = (ListView) view
        .findViewById(R.id.credential_menu_list);

    listView.setAdapter(listAdapter);

    // On item clicked in list
    listView.setOnItemClickListener(new OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View v, int position, long id){
            clickedListItem(position, v);
        }
    });

    if (mTwoPane) {
      log_button = (Button) view.findViewById(R.id.credential_menu_log_button);
      settings_button = (Button) view.findViewById(R.id.credential_menu_settings_button);

      log_button.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
          clickedLogButton();
        }
      });
      settings_button.setOnClickListener(new View.OnClickListener() {
          public void onClick(View v){
              clickedSettingsButton();
          }
      });
    }

    setTwoPaneMode(mTwoPane);
  }

  @Override
  public void onAttach(Activity activity) {
    super.onAttach(activity);

    // Activities containing this fragment must implement its callbacks.
    if (!(activity instanceof Callbacks)) {
      throw new IllegalStateException(
          "Activity must implement fragment's callbacks.");
    }

    mCallbacks = (Callbacks) activity;
  }

  /**
   * Turns work in two-pane mode. If this is the case, items remain
   * activitated after they have been clicked.
   */
  public void setTwoPaneMode(boolean twoPane) {
    // When setting CHOICE_MODE_SINGLE, ListView will automatically
    // give items the 'activated' state when touched.
    listView.setChoiceMode(
        twoPane ? ListView.CHOICE_MODE_SINGLE
            : ListView.CHOICE_MODE_NONE);
  }

  public void simulateListClick(int pos) {
      if(pos < credentials.size()) {
        listView.performItemClick(getView(), pos, listView.getItemIdAtPosition(pos));
      }
  }

  private void clickedLogButton() {
    listView.setItemChecked(listView.getCheckedItemPosition(), false);
    settings_button.setActivated(false);
    log_button.setActivated(true);

    mCallbacks.onLogSelected();
  }

  private void clickedSettingsButton() {
    listView.setItemChecked(listView.getCheckedItemPosition(), false);
    settings_button.setActivated(true);
    log_button.setActivated(false);

    mCallbacks.onSettingsSelected();
  }

  private void clickedListItem(int position, View item) {
    if(mTwoPane) {
      settings_button.setActivated(false);
      log_button.setActivated(false);
    }
    mCallbacks.onItemSelected(credentials.get(position).getCredentialDescription().getId());
  }

  public void updateList() {
    Log.i("Blaat", "Notifying list of update!!");
    listAdapter.notifyDataSetChanged();
    setNoItemsIfNecessary();
  }
}

Java Source Code List

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