// Copyright (c) 2014 The Chromium Embedded Framework Authors. All rights

// reserved. Use of this source code is governed by a BSD-style license that

// can be found in the LICENSE file.

package org.cef.handler;

import org.cef.browser.CefBrowser;

import org.cef.callback.CefDragData;

/**

* Implement this interface to handle events related to dragging. The methods of

* this class will be called on the UI thread.

*/

public interface CefDragHandler {

/**

*

*/

public static final class DragOperationMask {

public static final int DRAG_OPERATION_NONE = 0;

public static final int DRAG_OPERATION_COPY = 1;

public static final int DRAG_OPERATION_LINK = 2;

public static final int DRAG_OPERATION_GENERIC = 4;

public static final int DRAG_OPERATION_PRIVATE = 8;

public static final int DRAG_OPERATION_MOVE = 16;

public static final int DRAG_OPERATION_DELETE = 32;

public static final int DRAG_OPERATION_EVERY = Integer.MAX_VALUE;

}

/**

* Called when an external drag event enters the browser window.

*

* @param browser The browser generating the event.

* @param dragData Contains the drag event data. Instance only valid within the scope

* of this method.

* @param mask Represents the type of drag operation. See DragOperationMask for possible values.

* @return False for default drag handling behavior or true to cancel the drag event.

*/

public boolean onDragEnter(CefBrowser browser, CefDragData dragData, int mask);

}