| /* |
| * Copyright (C) 2010 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.launcher2; |
| |
| import android.content.Context; |
| import android.graphics.Paint; |
| import android.util.AttributeSet; |
| import android.widget.FrameLayout; |
| |
| import com.android.launcher.R; |
| |
| |
| /** |
| * Implements a DropTarget. |
| */ |
| public class ButtonDropTarget extends FrameLayout implements DropTarget, DragController.DragListener { |
| |
| protected final int mTransitionDuration; |
| |
| protected Launcher mLauncher; |
| |
| /** Whether this drop target is active for the current drag */ |
| protected boolean mActive; |
| |
| /** The paint applied to the drag view on hover */ |
| protected final Paint mHoverPaint = new Paint(); |
| |
| public ButtonDropTarget(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public ButtonDropTarget(Context context, AttributeSet attrs, int defStyle) { |
| super(context, attrs, defStyle); |
| |
| mTransitionDuration = |
| context.getResources().getInteger(R.integer.config_dropTargetBgTransitionDuration); |
| } |
| |
| void setLauncher(Launcher launcher) { |
| mLauncher = launcher; |
| } |
| |
| public boolean acceptDrop(DragObject d) { |
| return false; |
| } |
| |
| public void onDrop(DragObject d) { |
| // Do nothing |
| } |
| |
| public void onDragEnter(DragObject d) { |
| d.dragView.setPaint(mHoverPaint); |
| } |
| |
| public void onDragOver(DragObject d) { |
| // Do nothing |
| } |
| |
| public void onDragExit(DragObject d) { |
| d.dragView.setPaint(null); |
| } |
| |
| public void onDragStart(DragSource source, Object info, int dragAction) { |
| // Do nothing |
| } |
| |
| public boolean isDropEnabled() { |
| return mActive; |
| } |
| |
| public void onDragEnd() { |
| // Do nothing |
| } |
| |
| @Override |
| public DropTarget getDropTargetDelegate(DragObject d) { |
| return null; |
| } |
| } |