Refactor Html5 DnD feature based on API review (#9306)

* Refactor Html5 DnD client side based on API review

- Moved classes to "correct" packages.
- Removed method DragSourceExtension.clearDataTransferText()
- Remove ButtonDragSource in favor of more generic API

1 files changed, 0 insertions, 26 deletions

diff --git a/shared/src/main/java/com/vaadin/shared/ui/dnd/ButtonDragSourceState.java b/shared/src/main/java/com/vaadin/shared/ui/dnd/ButtonDragSourceState.java
deleted file mode 100644
index d035c4d35c..0000000000
--- a/shared/src/main/java/com/vaadin/shared/ui/dnd/ButtonDragSourceState.java
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * Copyright 2000-2016 Vaadin Ltd.
- *
- * 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.
- */
-package com.vaadin.shared.ui.dnd;
-
-/**
- * State class containing parameters for ButtonDragSourceExtension.
- *
- * @author Vaadin Ltd
- * @since 8.1
- */
-public class ButtonDragSourceState extends DragSourceState {
-
-}