move onBackPressed() into activity superclasses

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

@@ -65,6 +65,7 @@ public class DelegateBase implements DlgDelegate.DlgClickNotify,
     protected void onPause() {}
     protected void onStop() {}
     protected void onDestroy() {}
+    protected boolean onBackPressed() { return false; }
     protected void prepareDialog( int id, Dialog dialog ) {}
 
     // public boolean onOptionsItemSelected( MenuItem item ) 

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

@@ -20,13 +20,10 @@
 
 package org.eehouse.android.xw4;
 
-import android.app.ListActivity;
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
-import android.view.Menu;
-import android.view.MenuItem;
 
 import org.eehouse.android.xw4.jni.CurGameInfo;
 
@@ -81,13 +78,6 @@ public class GamesListActivity extends XWListActivity {
         }
     }
 
-    @Override
-    public void onBackPressed() {
-        if ( !m_dlgt.onBackPressed() ) {
-            super.onBackPressed();
-        }
-    }
-
     public static void onGameDictDownload( Context context, Intent intent )
     {
         intent.setClass( context, GamesListActivity.class );

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

@@ -429,7 +429,6 @@ public class GamesListDelegate extends ListDelegateBase
 
     protected void onWindowFocusChanged( boolean hasFocus )
     {
-        // super.onWindowFocusChanged( hasFocus );
         if ( hasFocus ) {
             updateField();
 
@@ -604,6 +603,7 @@ public class GamesListDelegate extends ListDelegateBase
         }
     }
 
+    @Override
     protected boolean onBackPressed() {
         boolean handled = 0 < m_selGames.size() || 0 < m_selGroupIDs.size();
         if ( handled ) {

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

@@ -39,13 +39,6 @@ public class StudyListActivity extends XWListActivity {
         super.onCreate( savedInstanceState, m_dlgt );
     }
 
-    @Override
-    public void onBackPressed() {
-        if ( !m_dlgt.backPressed() ) {
-            super.onBackPressed();
-        }
-    }
-
     public static void launchOrAlert( Context context, int lang, 
                                       DlgDelegate.HasDlgDelegate dlg )
     {

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

@@ -82,7 +82,8 @@ public class StudyListDelegate extends ListDelegateBase
         initOrFinish( getIntent() );
     }
 
-    protected boolean backPressed() 
+    @Override
+    protected boolean onBackPressed() 
     {
         boolean handled = 0 < m_checkeds.size();
         if ( handled ) {

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

@@ -72,6 +72,13 @@ public class XWActivity extends Activity {
         super.onDestroy();
     }
 
+    @Override
+    public void onBackPressed() {
+        if ( !m_dlgt.onBackPressed() ) {
+            super.onBackPressed();
+        }
+    }
+
     @Override
     public boolean onCreateOptionsMenu( Menu menu ) 
     {

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

@@ -72,6 +72,13 @@ public class XWListActivity extends ListActivity {
         super.onDestroy();
     }
 
+    @Override
+    public void onBackPressed() {
+        if ( !m_dlgt.onBackPressed() ) {
+            super.onBackPressed();
+        }
+    }
+
     @Override
     public boolean onCreateOptionsMenu( Menu menu ) 
     {

xwords4/android/XWords4/src/org/eehouse/android/xw4/loc/LocActivity.java

@@ -41,13 +41,6 @@ public class LocActivity extends XWListActivity {
         return m_dlgt.onCreateOptionsMenu( menu );
     }
 
-    @Override
-    public void onBackPressed() {
-        if ( !m_dlgt.onBackPressed() ) {
-            super.onBackPressed();
-        }
-    }
-
     @Override
     public void onWindowFocusChanged( boolean hasFocus )
     {

xwords4/android/XWords4/src/org/eehouse/android/xw4/loc/LocItemEditActivity.java

@@ -38,11 +38,4 @@ public class LocItemEditActivity extends XWActivity {
         super.onCreate( savedInstanceState, m_dlgt );
     } // onCreate
 
-    // Belongs in superclass?
-    @Override
-    public void onBackPressed() {
-        if ( !m_dlgt.backPressed() ) {
-            super.onBackPressed();
-        }
-    }
 }