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author | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 19:32:27 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 19:32:27 -0800 |
commit | 31dd503c6aa69018e694d91724d46db49ea09327 (patch) | |
tree | 9948995382d55906a8f4d06eaa4a320d700c4234 /src/com/android/launcher/DragController.java | |
parent | 31896793701b36714f040d4fe1b32426c68d5427 (diff) | |
download | android_packages_apps_Trebuchet-31dd503c6aa69018e694d91724d46db49ea09327.tar.gz android_packages_apps_Trebuchet-31dd503c6aa69018e694d91724d46db49ea09327.tar.bz2 android_packages_apps_Trebuchet-31dd503c6aa69018e694d91724d46db49ea09327.zip |
auto import from //depot/cupcake/@135843
Diffstat (limited to 'src/com/android/launcher/DragController.java')
-rw-r--r-- | src/com/android/launcher/DragController.java | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/com/android/launcher/DragController.java b/src/com/android/launcher/DragController.java new file mode 100644 index 000000000..29cf15a5c --- /dev/null +++ b/src/com/android/launcher/DragController.java @@ -0,0 +1,79 @@ +/* + * 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.android.launcher; + +import android.view.View; + +/** + * Interface for initiating a drag within a view or across multiple views. + * + */ +public interface DragController { + + /** + * Interface to receive notifications when a drag starts or stops + */ + interface DragListener { + + /** + * A drag has begun + * + * @param v The view that is being dragged + * @param source An object representing where the drag originated + * @param info The data associated with the object that is being dragged + * @param dragAction The drag action: either {@link DragController#DRAG_ACTION_MOVE} + * or {@link DragController#DRAG_ACTION_COPY} + */ + void onDragStart(View v, DragSource source, Object info, int dragAction); + + /** + * The drag has eneded + */ + void onDragEnd(); + } + + /** + * Indicates the drag is a move. + */ + public static int DRAG_ACTION_MOVE = 0; + + /** + * Indicates the drag is a copy. + */ + public static int DRAG_ACTION_COPY = 1; + + /** + * Starts a drag + * + * @param v The view that is being dragged + * @param source An object representing where the drag originated + * @param info The data associated with the object that is being dragged + * @param dragAction The drag action: either {@link #DRAG_ACTION_MOVE} or + * {@link #DRAG_ACTION_COPY} + */ + void startDrag(View v, DragSource source, Object info, int dragAction); + + /** + * Sets the drag listner which will be notified when a drag starts or ends. + */ + void setDragListener(DragListener l); + + /** + * Remove a previously installed drag listener. + */ + void removeDragListener(DragListener l); +} |