Android Open Source - grtransit Search Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

/*
 * Copyright 2011 Giles Malet.//from   w  w w  .j  av  a2  s . c o  m
 *
 * This file is part of GRTransit.
 * 
 * GRTransit 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.
 * 
 * GRTransit 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 GRTransit.  If not, see <http://www.gnu.org/licenses/>.
 */

package net.kw.shrdlu.grtgtfs.Activities;

import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.os.AsyncTask;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;

import com.google.android.gms.analytics.HitBuilders;

import net.kw.shrdlu.grtgtfs.DatabaseHelper;
import net.kw.shrdlu.grtgtfs.GRTApplication;
import net.kw.shrdlu.grtgtfs.LayoutAdapters.ListCursorAdapter;
import net.kw.shrdlu.grtgtfs.R;

public class SearchActivity extends MenuListActivity {
  private static final String TAG = "SearchActivity";

  private EditText mSearchText;
  private Cursor mCsr;

  private int mSearchType = R.id.button_searchstops; // default
  private String mQuery;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    mContext = this;
    setContentView(R.layout.searchlayout);
    super.onCreate(savedInstanceState);

    mSearchText = (EditText) findViewById(R.id.searchtext);

        getActionBar().setTitle(R.string.title_search);
        getActionBar().setSubtitle(null);

    mSearchText.addTextChangedListener(new TextWatcher() {
      @Override
      public void afterTextChanged(Editable s) {
        // Log.d(TAG, "afterTextChanged");
      }

      @Override
      public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        // Log.d(TAG, "beforeTextChanged");
      }

      @Override
      public void onTextChanged(CharSequence s, int start, int before, int count) {
        // Log.d(TAG, "onTextChanged");
        mQuery = String.valueOf(s);
        DoSearch(mSearchType, getIntent());
      }
    });
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    super.onCreateOptionsMenu(menu);

    menu.removeItem(R.id.menu_search);

    return true;
  }

  // Called when a button is clicked
  public void onButtonClick(View v) {
    final Intent intent = getIntent();

    switch (v.getId()) {
    case R.id.button_searchstops: {
            GRTApplication.tracker.send(new HitBuilders.EventBuilder(mContext.getLocalClassName(), "Search stops").build());
      DoSearch(v.getId(), intent);
      return;
    }
    case R.id.button_searchroutes: {
            GRTApplication.tracker.send(new HitBuilders.EventBuilder(mContext.getLocalClassName(), "Search routes").build());
      DoSearch(v.getId(), intent);
      return;
    }
    }
  }

  void DoSearch(int Id, Intent intent) {

    if (mQuery == null) {
      return;
    }

    mSearchType = Id; // Remember what we're doing: stops or routes
    final ListView lv = getListView();

    if (Id == R.id.button_searchstops) {

      // register to get long clicks on list
      getListView().setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
        @Override
        public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
          onListItemLongClick(parent, view, position, id);
          return true; // we consumed the click
        }
      });

      if (lv.getFooterViewsCount() < 1) {
        final TextView tv = new TextView(mContext);
        tv.setId(R.id.about_credits); // something that is not used in this layout
        tv.setText(R.string.longpress_adds_stop);
        lv.addFooterView(tv);
      }
      new FindStops().execute();

    } else if (Id == R.id.button_searchroutes) {

      if (lv.getFooterViewsCount() > 0) {
        final TextView tv = (TextView) findViewById(R.id.about_credits);
        if (tv != null) {
          lv.removeFooterView(tv);
        }
      }
      new FindRoutes().execute();

    } else {
      Log.e(TAG, "Search type is not stops or routes!?");
    }
  }

  @Override
  protected void onListItemClick(ListView l, View v, int position, long id) {
    // Log.v(TAG, "clicked position " + position);

    final Cursor csr = (Cursor) l.getItemAtPosition(position);
    if (csr == null) {
      return;
    }

    final String what = csr.getString(0);
    final String name = csr.getString(1);
    final String pkgstr = mContext.getApplicationContext().getPackageName();
    final Intent intent;

    if (mSearchType == R.id.button_searchstops) {

      intent = new Intent(mContext, RouteselectActivity.class);
      intent.putExtra(pkgstr + ".stop_id", what);
      intent.putExtra(pkgstr + ".stop_name", name);
      startActivity(intent);

    } else if (mSearchType == R.id.button_searchroutes) {

      intent = new Intent(mContext, RouteActivity.class);
      intent.putExtra(pkgstr + ".route_id", what);
      intent.putExtra(pkgstr + ".headsign", name); // TODO - this is not actually the headsign if using routes file...
      // route.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
      startActivity(intent);

    } else {
      Log.e(TAG, "Search type is not stops or routes!?");
    }
  }

  // Called from the listener above for a long click
    void onListItemLongClick(AdapterView<?> parent, View v, int position, long id) {
    // Log.v(TAG, "long clicked position " + position);

    if (mSearchType != R.id.button_searchstops) {
      return; // only makes sense for stops
    }

    final Cursor csr = (Cursor) parent.getItemAtPosition(position);
    if (csr == null) {
      return;
    }
    final String stop_id = csr.getString(0);
    final String stop_name = csr.getString(1);

    final DialogInterface.OnClickListener listener = new DialogInterface.OnClickListener() {
      @Override
      public void onClick(DialogInterface dialog, int id) {
        switch (id) {
        case DialogInterface.BUTTON_POSITIVE:
          GRTApplication.mPreferences.AddBusstopFavourite(stop_id, stop_name);
          // mContext.startActivity(new Intent(mContext, FavstopsActivity.class));
          break;
          // case DialogInterface.BUTTON_NEGATIVE:
          // // nothing
          // break;
        }
        dialog.cancel();
      }
    };

    final AlertDialog.Builder builder = new AlertDialog.Builder(mContext);
    builder.setTitle("Stop " + stop_id + ", " + stop_name);
    builder.setMessage(R.string.favs_add_to_list).setPositiveButton(R.string.yes, listener)
    .setNegativeButton(R.string.no, listener).create().show();
  }

  private class FindStops extends AsyncTask<Void, Void, Void> {
    // static final String TAG = "FindStops";

    @Override
    protected Void doInBackground(Void... foo) {

      final String table = "stops";
      final String[] columns = { "stop_id as _id", "stop_name as descr" };
      final String whereclause = "stop_id like '%' || ? || '%' or stop_name like '%' || ? || '%'";
      final String[] selectargs = { mQuery, mQuery };
      mCsr = DatabaseHelper.ReadableDB().query(table, columns, whereclause, selectargs, null, null, null, null);
      startManagingCursor(mCsr);

      return null;
    }

    @Override
    protected void onPostExecute(Void foo) {
            getActionBar().setTitle("Stops matching `" + mQuery + "'");
            getActionBar().setSubtitle(null);
      final ListCursorAdapter adapter = new ListCursorAdapter(mContext, R.layout.stop_numanddesc, mCsr);
      setListAdapter(adapter);
      // adapter.notifyDataSetChanged();
    }
  }

  private class FindRoutes extends AsyncTask<Void, Void, Void> {
    // static final String TAG = "FindStops";

    @Override
    protected Void doInBackground(Void... foo) {
      // TODO Need to deal with search for `7A', where the 7 is the route_id,
      // and the A is the start of the trip_headsign.

      final String table = "trips join routes on routes.route_id = trips.route_id";
      final String[] columns = { "distinct routes.route_short_name as _id", "trip_headsign as descr" };
      final String whereclause = "routes.route_short_name like '%' || ? || '%' or trip_headsign like '%' || ? || '%'";
      final String[] selectargs = { mQuery, mQuery };
      final String orderby = "cast(routes.route_short_name as integer)";
      mCsr = DatabaseHelper.ReadableDB().query(table, columns, whereclause, selectargs, null, null, orderby, null);
      startManagingCursor(mCsr);

      return null;
    }

    @Override
    protected void onPostExecute(Void foo) {
            getActionBar().setTitle("Routes matching `" + mQuery + "'");
            getActionBar().setSubtitle(null);
      final ListCursorAdapter adapter = new ListCursorAdapter(mContext, R.layout.route_numanddesc, mCsr);
      setListAdapter(adapter);
      // adapter.notifyDataSetChanged();
    }
  }
}

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