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   1 /*
   2  * Copyright © 2013 Mike Beattie <mike@ethernal.org>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  17  */
  18
  19 package org.altusmetrum.AltosDroid;
  20
  21 import org.altusmetrum.altoslib_13.*;
  22 import android.location.Location;
  23 import android.app.Activity;
  24 import android.support.v4.app.Fragment;
  25 import android.support.v4.app.FragmentTransaction;
  26 import android.widget.TextView;
  27
  28 public abstract class AltosDroidTab extends Fragment implements AltosUnitsListener {
  29         TelemetryState          last_telem_state;
  30         AltosState              last_state;
  31         AltosGreatCircle        last_from_receiver;
  32         Location                last_receiver;
  33         AltosDroid              altos_droid;
  34
  35         public abstract void show(TelemetryState telem_state, AltosState state, AltosGreatCircle from_receiver, Location receiver);
  36
  37         public abstract String tab_name();
  38
  39         public void units_changed(boolean imperial_units) {
  40                 if (!isHidden())
  41                         show(last_telem_state, last_state, last_from_receiver, last_receiver);
  42         }
  43
  44         public void set_value(TextView text_view,
  45                               AltosUnits units,
  46                               int width,
  47                               double value) {
  48                 if (value == AltosLib.MISSING)
  49                         text_view.setText("");
  50                 else
  51                         text_view.setText(units.show(width, value));
  52         }
  53
  54         public void set_visible(boolean visible) {
  55                 FragmentTransaction     ft = AltosDroid.fm.beginTransaction();
  56                 AltosDebug.debug("set visible %b %s\n", visible, tab_name());
  57                 if (visible) {
  58                         ft.show(this);
  59                         show(last_telem_state, last_state, last_from_receiver, last_receiver);
  60                 } else
  61                         ft.hide(this);
  62                 try {
  63                         ft.commitAllowingStateLoss();
  64                 } catch (IllegalStateException ie) {
  65                 }
  66         }
  67
  68         @Override
  69         public void onAttach(Activity activity) {
  70                 super.onAttach(activity);
  71                 altos_droid = (AltosDroid) activity;
  72                 altos_droid.registerTab(this);
  73         }
  74
  75         @Override
  76         public void onDetach() {
  77                 super.onDetach();
  78                 altos_droid.unregisterTab(this);
  79                 altos_droid = null;
  80         }
  81
  82         @Override
  83         public void onResume() {
  84                 super.onResume();
  85                 AltosDebug.debug("onResume tab %s\n", tab_name());
  86                 set_visible(true);
  87         }
  88
  89         public void update_ui(TelemetryState telem_state, AltosState state,
  90                               AltosGreatCircle from_receiver, Location receiver, boolean is_current)
  91         {
  92                 last_telem_state = telem_state;
  93                 last_state = state;
  94                 last_from_receiver = from_receiver;
  95                 last_receiver = receiver;
  96                 if (is_current)
  97                         show(telem_state, state, from_receiver, receiver);
  98                 else
  99                         return;
 100         }
 101 }