+import android.app.Activity;
+import android.graphics.Color;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentTransaction;
+import android.support.v4.app.FragmentManager;
+import android.location.Location;
+import android.util.Log;
+import android.widget.TextView;
+
+public abstract class AltosDroidTab extends Fragment implements AltosUnitsListener {
+ AltosState last_state;
+ AltosGreatCircle last_from_receiver;
+ Location last_receiver;
+
+ public abstract void show(AltosState state, AltosGreatCircle from_receiver, Location receiver);
+
+ public abstract String tab_name();
+
+ public void units_changed(boolean imperial_units) {
+ if (!isHidden() && last_state != null)
+ show(last_state, last_from_receiver, last_receiver);
+ }
+
+ public void set_value(TextView text_view,
+ AltosUnits units,
+ int width,
+ double value) {
+ if (value == AltosLib.MISSING)
+ text_view.setText("");
+ else
+ text_view.setText(units.show(width, value));
+ }
+
+ public void set_visible(boolean visible) {
+ FragmentTransaction ft = AltosDroid.fm.beginTransaction();
+ if (visible) {
+ AltosState state = last_state;
+ AltosGreatCircle from_receiver = last_from_receiver;
+ Location receiver = last_receiver;
+
+ show(state, from_receiver, receiver);
+ ft.show(this);
+ } else
+ ft.hide(this);
+ ft.commitAllowingStateLoss();
+ }