version:1.5

fix:迁移到奥乐云平台
add:

src/com/aoleyun/os/DropTarget.java

@@ -0,0 +1,133 @@
+/*
+ * 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.aoleyun.os;
+
+import android.graphics.Rect;
+
+import com.aoleyun.os.accessibility.DragViewStateAnnouncer;
+import com.aoleyun.os.dragndrop.DragOptions;
+import com.aoleyun.os.dragndrop.DragView;
+
+/**
+ * Interface defining an object that can receive a drag.
+ *
+ */
+public interface DropTarget {
+
+    class DragObject {
+        public int x = -1;
+        public int y = -1;
+
+        /** X offset from the upper-left corner of the cell to where we touched.  */
+        public int xOffset = -1;
+
+        /** Y offset from the upper-left corner of the cell to where we touched.  */
+        public int yOffset = -1;
+
+        /** This indicates whether a drag is in final stages, either drop or cancel. It
+         * differentiates onDragExit, since this is called when the drag is ending, above
+         * the current drag target, or when the drag moves off the current drag object.
+         */
+        public boolean dragComplete = false;
+
+        /** The view that moves around while you drag.  */
+        public DragView dragView = null;
+
+        /** The data associated with the object, after item is dropped. */
+        public ItemInfo dragInfo = null;
+
+        /** The data associated with the object  being dragged */
+        public ItemInfo originalDragInfo = null;
+
+        /** Where the drag originated */
+        public DragSource dragSource = null;
+
+        /** The object is part of an accessible drag operation */
+        public boolean accessibleDrag;
+
+        /** Indicates that the drag operation was cancelled */
+        public boolean cancelled = false;
+
+        /** Defers removing the DragView from the DragLayer until after the drop animation. */
+        public boolean deferDragViewCleanupPostAnimation = true;
+
+        public DragViewStateAnnouncer stateAnnouncer;
+
+        public DragObject() {
+        }
+
+        /**
+         * This is used to compute the visual center of the dragView. This point is then
+         * used to visualize drop locations and determine where to drop an item. The idea is that
+         * the visual center represents the user's interpretation of where the item is, and hence
+         * is the appropriate point to use when determining drop location.
+         */
+        public final float[] getVisualCenter(float[] recycle) {
+            final float res[] = (recycle == null) ? new float[2] : recycle;
+            Rect dragRegion = dragView.getDragRegion();
+
+            // These represent the visual top and left of drag view if a dragRect was provided.
+            // If a dragRect was not provided, then they correspond to the actual view left and
+            // top, as the dragRect is in that case taken to be the entire dragView.
+            int left = x - xOffset - dragRegion.left;
+            int top = y - yOffset - dragRegion.top;
+
+            // In order to find the visual center, we shift by half the dragRect
+            res[0] = left + dragRegion.width() / 2;
+            res[1] = top + dragRegion.height() / 2;
+
+            return res;
+        }
+    }
+
+    /**
+     * Used to temporarily disable certain drop targets
+     *
+     * @return boolean specifying whether this drop target is currently enabled
+     */
+    boolean isDropEnabled();
+
+    /**
+     * Handle an object being dropped on the DropTarget.
+     *
+     * This will be called only if this target previously returned true for {@link #acceptDrop}. It
+     * is the responsibility of this target to exit out of the spring loaded mode (either
+     * immediately or after any pending animations).
+     *
+     * If the drop was cancelled for some reason, onDrop will never get called, the UI will
+     * automatically exit out of this mode.
+     */
+    void onDrop(DragObject dragObject, DragOptions options);
+
+    void onDragEnter(DragObject dragObject);
+
+    void onDragOver(DragObject dragObject);
+
+    void onDragExit(DragObject dragObject);
+
+    /**
+     * Check if a drop action can occur at, or near, the requested location.
+     * This will be called just before onDrop.
+     * @return True if the drop will be accepted, false otherwise.
+     */
+    boolean acceptDrop(DragObject dragObject);
+
+    void prepareAccessibilityDrop();
+
+    // These methods are implemented in Views
+    void getHitRectRelativeToDragLayer(Rect outRect);
+}