Fix numpad/call insensitive buttons if drawer locked

res/layout/dialer.xml

@@ -76,7 +76,7 @@
 			
 		</LinearLayout>
 	
-		<SlidingDrawer
+		<org.linphone.ui.LockableSlidingDrawer
 			android:id="@+id/drawer"
 			android:layout_width="fill_parent"
 			android:layout_height="fill_parent"
@@ -118,7 +118,7 @@
 				android:layout_width="fill_parent"
 				android:layout_height="fill_parent" />
 			
-		</SlidingDrawer>
+		</org.linphone.ui.LockableSlidingDrawer>
 	
 	</FrameLayout>
 	

src/org/linphone/DialerActivity.java

@@ -49,7 +49,9 @@ import android.os.Bundle;
 import android.preference.PreferenceManager;
 import android.view.KeyEvent;
 import android.view.LayoutInflater;
+import android.view.MotionEvent;
 import android.view.View;
+import android.view.View.OnTouchListener;
 import android.view.WindowManager;
 import android.view.View.OnClickListener;
 import android.widget.Adapter;
@@ -265,6 +267,7 @@ public class DialerActivity extends Activity implements LinphoneGuiListener {
 			boolean disable_sliding_drawer = getResources().getBoolean(R.bool.disable_dialer_sliding_drawer);
 			
 			if (disable_sliding_drawer) {
+				drawer.close();
 				drawer.lock();
 			} else {
 				drawer.setOnDrawerScrollListener(new OnDrawerScrollListener() {

src/org/linphone/ui/LockableSlidingDrawer.java

@@ -0,0 +1,35 @@
+package org.linphone.ui;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+import android.widget.SlidingDrawer;
+
+public class LockableSlidingDrawer extends SlidingDrawer {
+    private boolean locked = false;
+    
+    public LockableSlidingDrawer(Context context) {
+        super(context, null, 0);
+    }
+    
+    public LockableSlidingDrawer(Context context, AttributeSet attrs) {
+        super(context, attrs, 0);
+    }
+    
+    public LockableSlidingDrawer(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+    
+    @Override
+    public boolean onTouchEvent(MotionEvent event)  {
+	    if (this.locked) {
+	    	return false;
+	    }
+	    
+	    return super.onTouchEvent(event);
+    }
+    
+    public void lock() {
+        this.locked = true;
+    }
+}