Animate the batch-operations toolbar (Imported from AOSP)

res/anim/footer_appear.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/* //device/apps/common/assets/res/layout/list_content.xml
+**
+** Copyright 2009, Google Inc.
+**
+** Licensed under the Apache License, Version 2.0 (the "License"); 
+** you may not use this file except in compliance with the License. 
+** You may obtain a copy of the License at 
+**
+**     http://www.apache.org/licenses/LICENSE-2.0 
+**
+** Unless required by applicable law or agreed to in writing, software 
+** distributed under the License is distributed on an "AS IS" BASIS, 
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
+** See the License for the specific language governing permissions and 
+** limitations under the License.
+*/
+-->
+
+<set xmlns:android="http://schemas.android.com/apk/res/android" >
+    <translate
+        android:fromYDelta="+10%p"
+        android:toYDelta="0"
+        android:duration="300" />
+</set>

res/anim/footer_disappear.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/* //device/apps/common/assets/res/layout/list_content.xml
+**
+** Copyright 2009, Google Inc.
+**
+** Licensed under the Apache License, Version 2.0 (the "License"); 
+** you may not use this file except in compliance with the License. 
+** You may obtain a copy of the License at 
+**
+**     http://www.apache.org/licenses/LICENSE-2.0 
+**
+** Unless required by applicable law or agreed to in writing, software 
+** distributed under the License is distributed on an "AS IS" BASIS, 
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
+** See the License for the specific language governing permissions and 
+** limitations under the License.
+*/
+-->
+
+<set xmlns:android="http://schemas.android.com/apk/res/android" >
+    <translate
+        android:fromYDelta="0"
+        android:toYDelta="+10%p"
+        android:duration="300" />
+</set>

src/com/fsck/k9/activity/MessageList.java

@@ -23,6 +23,9 @@ import android.text.style.ForegroundColorSpan;
 import android.text.style.StyleSpan;
 import android.util.Log;
 import android.util.TypedValue;
+import android.view.animation.Animation;
+import android.view.animation.AnimationUtils;
+import android.view.animation.Animation.AnimationListener;
 import android.view.ContextMenu;
 import android.view.GestureDetector;
 import android.view.KeyEvent;
@@ -76,7 +79,7 @@ import com.fsck.k9.mail.store.LocalStore.LocalFolder;
  */
 public class MessageList
     extends K9Activity
-    implements OnClickListener, AdapterView.OnItemClickListener
+    implements OnClickListener, AdapterView.OnItemClickListener, AnimationListener
 {
 
     /**
@@ -2884,14 +2887,23 @@ public class MessageList
 
     private void hideBatchButtons()
     {
-        //TODO: Fade out animation
+        if (mBatchButtonArea.getVisibility() != View.GONE)
+        {
             mBatchButtonArea.setVisibility(View.GONE);
+            mBatchButtonArea.startAnimation(
+                AnimationUtils.loadAnimation(this, R.anim.footer_disappear));
+        }
     }
 
     private void showBatchButtons()
     {
-        //TODO: Fade in animation
+        if (mBatchButtonArea.getVisibility() != View.VISIBLE)
+        {
             mBatchButtonArea.setVisibility(View.VISIBLE);
+            Animation animation = AnimationUtils.loadAnimation(this, R.anim.footer_appear);
+            animation.setAnimationListener(this);
+            mBatchButtonArea.startAnimation(animation);
+        }
     }
 
     private void toggleBatchButtons()
@@ -3058,6 +3070,20 @@ public class MessageList
         mHandler.sortMessages();
     }
 
+    public void onAnimationEnd(Animation animation)
+    {
+    }
+
+    public void onAnimationRepeat(Animation animation)
+    {
+    }
+
+    public void onAnimationStart(Animation animation)
+    {
+    }
+
+
+
     private void setAllSelected(boolean isSelected)
     {
         mSelectedCount = 0;