--- /dev/null
+/*
+ * This is a modified version of a class from the Android Open Source Project.
+ * The original copyright and license information follows.
+ *
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * 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.blahti.drag;
+
+import android.graphics.Rect;
+
+/**
+ * Interface defining an object that can receive a view at the end of a drag operation.
+ *
+ */
+public interface DropTarget {
+
+ /**
+ * Handle an object being dropped on the DropTarget
+ *
+ * @param source DragSource where the drag started
+ * @param x X coordinate of the drop location
+ * @param y Y coordinate of the drop location
+ * @param xOffset Horizontal offset with the object being dragged where the original
+ * touch happened
+ * @param yOffset Vertical offset with the object being dragged where the original
+ * touch happened
+ * @param dragView The DragView that's being dragged around on screen.
+ * @param dragInfo Data associated with the object being dragged
+ *
+ */
+ void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, DragView dragView, Object dragInfo);
+
+ void onDragEnter(DragSource source, int x, int y, int xOffset, int yOffset, DragView dragView, Object dragInfo);
+
+ void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, DragView dragView, Object dragInfo);
+
+ void onDragExit(DragSource source, int x, int y, int xOffset, int yOffset, DragView dragView, Object dragInfo);
+
+ /**
+ * Check if a drop action can occur at, or near, the requested location.
+ * This may be called repeatedly during a drag, so any calls should return
+ * quickly.
+ *
+ * @param source DragSource where the drag started
+ * @param x X coordinate of the drop location
+ * @param y Y coordinate of the drop location
+ * @param xOffset Horizontal offset with the object being dragged where the
+ * original touch happened
+ * @param yOffset Vertical offset with the object being dragged where the
+ * original touch happened
+ * @param dragView The DragView that's being dragged around on screen.
+ * @param dragInfo Data associated with the object being dragged
+ * @return True if the drop will be accepted, false otherwise.
+ */
+ boolean acceptDrop(DragSource source, int x, int y, int xOffset, int yOffset, DragView dragView, Object dragInfo);
+
+ /**
+ * Estimate the surface area where this object would land if dropped at the
+ * given location.
+ *
+ * @param source DragSource where the drag started
+ * @param x X coordinate of the drop location
+ * @param y Y coordinate of the drop location
+ * @param xOffset Horizontal offset with the object being dragged where the
+ * original touch happened
+ * @param yOffset Vertical offset with the object being dragged where the
+ * original touch happened
+ * @param dragView The DragView that's being dragged around on screen.
+ * @param dragInfo Data associated with the object being dragged
+ * @param recycle {@link Rect} object to be possibly recycled.
+ * @return Estimated area that would be occupied if object was dropped at
+ * the given location. Should return null if no estimate is found,
+ * or if this target doesn't provide estimations.
+ */
+ Rect estimateDropLocation(DragSource source, int x, int y, int xOffset, int yOffset, DragView dragView, Object dragInfo, Rect recycle);
+
+ // These methods are implemented in Views
+ void getHitRect(Rect outRect);
+ void getLocationOnScreen(int[] loc);
+ int getLeft();
+ int getTop();
+}