force re-layout of board when toolbar populated

Sometimes when a new game is created the board winds up with the toolbar
drawn over the tray. That's because when it was laid out the game wasn't
running yet and so none of the toolbar buttons was enabled, giving the
toolbar a height of 0. So now the first time the updated toolbar reports
that at least one button is enabled we force the board to lay itself out
again.

xwords4/android/XWords4/src/org/eehouse/android/xw4/BoardDelegate.java

@@ -2570,6 +2570,7 @@ public class BoardDelegate extends DelegateBase
         }
     }
 
+    private boolean m_needsResize = false;
     private void updateToolbar()
     {
         if ( null != m_toolbar ) {
@@ -2582,6 +2583,14 @@ public class BoardDelegate extends DelegateBase
             m_toolbar.update( Buttons.BUTTON_CHAT, m_gsi.canChat );
             m_toolbar.update( Buttons.BUTTON_BROWSE_DICT,
                               null != m_gi.dictName( m_view.getCurPlayer() ) );
+
+            int count = m_toolbar.enabledCount();
+            if ( 0 == count ) {
+                m_needsResize = true;
+            } else if ( m_needsResize && 0 < count ) {
+                m_needsResize = false;
+                m_view.orientationChanged();
+            }
         }
     }
 

xwords4/android/XWords4/src/org/eehouse/android/xw4/Toolbar.java

@@ -28,9 +28,12 @@ import android.widget.HorizontalScrollView;
 import android.widget.ImageButton;
 import android.widget.LinearLayout;
 import android.widget.ScrollView;
+
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.Iterator;
 import java.util.Map;
+import java.util.Set;
 
 import junit.framework.Assert;
 
@@ -62,6 +65,7 @@ public class Toolbar implements BoardContainer.SizeChangeListener {
     private boolean m_visible;
     private Map<Buttons, Object> m_onClickListeners;
     private Map<Buttons, Object> m_onLongClickListeners;
+    private Set<Buttons> m_enabled = new HashSet<Buttons>();
 
     public Toolbar( Activity activity, HasDlgDelegate dlgDlgt )
     {
@@ -123,7 +127,15 @@ public class Toolbar implements BoardContainer.SizeChangeListener {
         if ( null != button ) {
             button.setVisibility( enable ? View.VISIBLE : View.GONE );
         }
+
+        if ( enable ) {
+            m_enabled.add( index );
+        } else {
+            m_enabled.remove( index );
         }
+    }
+
+    protected int enabledCount() { return m_enabled.size(); }
 
     // SizeChangeListener
     public void sizeChanged( int width, int height, boolean isPortrait )