1 files changed, 87 insertions, 0 deletions
diff --git a/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/layout/gle2/DropGesture.java b/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/layout/gle2/DropGesture.java
new file mode 100644
index 000000000..bb3be7f68
--- /dev/null
+++ b/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/eclipse/adt/internal/editors/layout/gle2/DropGesture.java
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/org/documents/epl-v10.php
+ *
+ * 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.android.ide.eclipse.adt.internal.editors.layout.gle2;
+
+import org.eclipse.swt.dnd.DropTargetEvent;
+import org.eclipse.swt.dnd.DropTargetListener;
+
+/**
+ * A {@link DropGesture} is a {@link Gesture} which deals with drag and drop, so
+ * it has additional hooks for indicating whether the current position is
+ * "valid", and in general gets access to the system drag and drop data
+ * structures. See the {@link Gesture} documentation for more details on whether
+ * you should choose a plain {@link Gesture} or a {@link DropGesture}.
+ */
+public abstract class DropGesture extends Gesture {
+    /**
+     * The cursor has entered the drop target boundaries.
+     *
+     * @param event The {@link DropTargetEvent} for this drag and drop event
+     * @see DropTargetListener#dragEnter(DropTargetEvent)
+     */
+    public void dragEnter(DropTargetEvent event) {
+    }
+
+    /**
+     * The cursor is moving over the drop target.
+     *
+     * @param event The {@link DropTargetEvent} for this drag and drop event
+     * @see DropTargetListener#dragOver(DropTargetEvent)
+     */
+    public void dragOver(DropTargetEvent event) {
+    }
+
+    /**
+     * The operation being performed has changed (usually due to the user
+     * changing the selected modifier key(s) while dragging).
+     *
+     * @param event The {@link DropTargetEvent} for this drag and drop event
+     * @see DropTargetListener#dragOperationChanged(DropTargetEvent)
+     */
+    public void dragOperationChanged(DropTargetEvent event) {
+    }
+
+    /**
+     * The cursor has left the drop target boundaries OR the drop has been
+     * canceled OR the data is about to be dropped.
+     *
+     * @param event The {@link DropTargetEvent} for this drag and drop event
+     * @see DropTargetListener#dragLeave(DropTargetEvent)
+     */
+    public void dragLeave(DropTargetEvent event) {
+    }
+
+    /**
+     * The drop is about to be performed. The drop target is given a last chance
+     * to change the nature of the drop.
+     *
+     * @param event The {@link DropTargetEvent} for this drag and drop event
+     * @see DropTargetListener#dropAccept(DropTargetEvent)
+     */
+    public void dropAccept(DropTargetEvent event) {
+    }
+
+    /**
+     * The data is being dropped. The data field contains java format of the
+     * data being dropped.
+     *
+     * @param event The {@link DropTargetEvent} for this drag and drop event
+     * @see DropTargetListener#drop(DropTargetEvent)
+     */
+    public void drop(final DropTargetEvent event) {
+    }
+}