delete button in record overview

res/layout/fragment_record_list.xml

@@ -64,6 +64,15 @@
             android:layout_alignParentTop="true"
             android:layout_toLeftOf="@+id/GroupButton"/>
 
+        <ImageButton
+            style="@android:style/Widget.DeviceDefault.ActionButton.Overflow"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:id="@+id/DeleteButton"
+            android:src="@drawable/ic_action_discard"
+            android:layout_alignParentTop="true"
+            android:layout_toLeftOf="@+id/FilterButton"/>
+
         <ImageButton
             style="@android:style/Widget.DeviceDefault.ActionButton.Overflow"
             android:layout_width="wrap_content"

src/de/tudarmstadt/informatik/hostage/ui/fragment/RecordOverviewFragment.java

@@ -188,6 +188,14 @@ public class RecordOverviewFragment extends UpNavigatibleFragment implements Che
 
         this.initialiseListView();
 
+        ImageButton deleteButton = (ImageButton) rootView.findViewById(R.id.DeleteButton);
+        deleteButton.setOnClickListener(new View.OnClickListener() {
+            public void onClick(View v) {
+                RecordOverviewFragment.this.openDeleteFilteredAttacksDialog();
+            }
+        });
+        deleteButton.setVisibility(this.showFilterButton? View.VISIBLE : View.INVISIBLE);
+
         ImageButton filterButton = (ImageButton) rootView.findViewById(R.id.FilterButton);
         filterButton.setOnClickListener(new View.OnClickListener() {
             public void onClick(View v) {
@@ -196,6 +204,7 @@ public class RecordOverviewFragment extends UpNavigatibleFragment implements Che
         });
         filterButton.setVisibility(this.showFilterButton? View.VISIBLE : View.INVISIBLE);
 
+
         ImageButton sortButton = (ImageButton) rootView.findViewById(R.id.SortButton);
         sortButton.setOnClickListener(new View.OnClickListener() {
             public void onClick(View v) {