operators activity added

res/layout/calc_operators_button.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
+  ~ For more information, please, contact se.solovyev@gmail.com
+  ~ or visit http://se.solovyev.org
+  -->
+
+<org.solovyev.android.view.widgets.DirectionDragButton xmlns:a="http://schemas.android.com/apk/res/android"
+													   a:id="@+id/functionsButton"
+													   a:text="∂,∫"
+													   a:textStyle="italic"
+													   a:onClick="operatorsButtonClickHandler"
+													   style="?controlButtonStyle"/>

res/layout/operators.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
+  ~ For more information, please, contact se.solovyev@gmail.com
+  ~ or visit http://se.solovyev.org
+  -->
+
+<LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
+    a:orientation="vertical"
+    a:layout_width="fill_parent"
+    a:layout_height="fill_parent">
+
+    <ListView
+        a:layout_width="fill_parent"
+        a:layout_height="fill_parent"
+        a:layout_weight="1"
+        a:id="@android:id/list"/>
+
+</LinearLayout>