1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.view;
18
19import com.android.layoutlib.bridge.impl.DelegateManager;
20import com.android.tools.layoutlib.annotations.LayoutlibDelegate;
21
22/**
23 * Delegate implementing the native methods of {@link RenderNode}
24 * <p/>
25 * Through the layoutlib_create tool, some native methods of RenderNode have been replaced by calls
26 * to methods of the same name in this delegate class.
27 *
28 * @see DelegateManager
29 */
30public class RenderNode_Delegate {
31
32
33    // ---- delegate manager ----
34    private static final DelegateManager<RenderNode_Delegate> sManager =
35            new DelegateManager<RenderNode_Delegate>(RenderNode_Delegate.class);
36
37
38    private float mLift;
39    @SuppressWarnings("UnusedDeclaration")
40    private String mName;
41
42    @LayoutlibDelegate
43    /*package*/ static long nCreate(String name) {
44        RenderNode_Delegate renderNodeDelegate = new RenderNode_Delegate();
45        renderNodeDelegate.mName = name;
46        return sManager.addNewDelegate(renderNodeDelegate);
47    }
48
49    @LayoutlibDelegate
50    /*package*/ static void nDestroyRenderNode(long renderNode) {
51        sManager.removeJavaReferenceFor(renderNode);
52    }
53
54    @LayoutlibDelegate
55    /*package*/ static boolean nSetElevation(long renderNode, float lift) {
56        RenderNode_Delegate delegate = sManager.getDelegate(renderNode);
57        if (delegate != null && delegate.mLift != lift) {
58            delegate.mLift = lift;
59            return true;
60        }
61        return false;
62    }
63
64    @LayoutlibDelegate
65    /*package*/ static float nGetElevation(long renderNode) {
66        RenderNode_Delegate delegate = sManager.getDelegate(renderNode);
67        if (delegate != null) {
68            return delegate.mLift;
69        }
70        return 0f;
71    }
72}
73