ViewGroupBindingAdapter.java revision 716ba89e7f459f49ea85070d4710c1d79d715298 
1/*
2 * Copyright (C) 2015 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 */
16package android.databinding.adapters;
17
18import android.animation.LayoutTransition;
19import android.annotation.TargetApi;
20import android.databinding.BindingAdapter;
21import android.databinding.BindingMethod;
22import android.databinding.BindingMethods;
23import android.os.Build;
24import android.view.View;
25import android.view.ViewGroup;
26import android.view.ViewGroup.OnHierarchyChangeListener;
27import android.view.animation.Animation;
28import android.view.animation.Animation.AnimationListener;
29
30@BindingMethods({
31        @BindingMethod(type = android.view.ViewGroup.class, attribute = "android:alwaysDrawnWithCache", method = "setAlwaysDrawnWithCacheEnabled"),
32        @BindingMethod(type = android.view.ViewGroup.class, attribute = "android:animationCache", method = "setAnimationCacheEnabled"),
33        @BindingMethod(type = android.view.ViewGroup.class, attribute = "android:splitMotionEvents", method = "setMotionEventSplittingEnabled"),
34})
35public class ViewGroupBindingAdapter {
36
37    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
38    @BindingAdapter({"android:animateLayoutChanges"})
39    public static void setAnimateLayoutChanges(ViewGroup view, boolean animate) {
40        if (animate) {
41            view.setLayoutTransition(new LayoutTransition());
42        } else {
43            view.setLayoutTransition(null);
44        }
45    }
46
47    @BindingAdapter("android:onChildViewAdded")
48    public static void setListener(ViewGroup view, OnChildViewAdded listener) {
49        setListener(view, listener, null);
50    }
51
52    @BindingAdapter("android:onChildViewRemoved")
53    public static void setListener(ViewGroup view, OnChildViewRemoved listener) {
54        setListener(view, null, listener);
55    }
56
57    @BindingAdapter({"android:onChildViewAdded", "android:onChildViewRemoved"})
58    public static void setListener(ViewGroup view, final OnChildViewAdded added,
59            final OnChildViewRemoved removed) {
60        if (added == null && removed == null) {
61            view.setOnHierarchyChangeListener(null);
62        } else {
63            view.setOnHierarchyChangeListener(new OnHierarchyChangeListener() {
64                @Override
65                public void onChildViewAdded(View parent, View child) {
66                    if (added != null) {
67                        added.onChildViewAdded(parent, child);
68                    }
69                }
70
71                @Override
72                public void onChildViewRemoved(View parent, View child) {
73                    if (removed != null) {
74                        removed.onChildViewRemoved(parent, child);
75                    }
76                }
77            });
78        }
79    }
80
81    @BindingAdapter({"android:onAnimationStart", "android:onAnimationEnd",
82            "android:onAnimationRepeat"})
83    public static void setListener(ViewGroup view, final OnAnimationStart start,
84            final OnAnimationEnd end, final OnAnimationRepeat repeat) {
85        if (start == null && end == null && repeat == null) {
86            view.setLayoutAnimationListener(null);
87        } else {
88            view.setLayoutAnimationListener(new AnimationListener() {
89                @Override
90                public void onAnimationStart(Animation animation) {
91                    if (start != null) {
92                        start.onAnimationStart(animation);
93                    }
94                }
95
96                @Override
97                public void onAnimationEnd(Animation animation) {
98                    if (end != null) {
99                        end.onAnimationEnd(animation);
100                    }
101                }
102
103                @Override
104                public void onAnimationRepeat(Animation animation) {
105                    if (repeat != null) {
106                        repeat.onAnimationRepeat(animation);
107                    }
108                }
109            });
110        }
111    }
112
113    @BindingAdapter({"android:onAnimationStart", "android:onAnimationEnd"})
114    public static void setListener(ViewGroup view, final OnAnimationStart start,
115            final OnAnimationEnd end) {
116        setListener(view, start, end, null);
117    }
118
119    @BindingAdapter({"android:onAnimationEnd", "android:onAnimationRepeat"})
120    public static void setListener(ViewGroup view, final OnAnimationEnd end,
121            final OnAnimationRepeat repeat) {
122        setListener(view, null, end, repeat);
123    }
124
125    @BindingAdapter({"android:onAnimationStart", "android:onAnimationRepeat"})
126    public static void setListener(ViewGroup view, final OnAnimationStart start,
127            final OnAnimationRepeat repeat) {
128        setListener(view, start, null, repeat);
129    }
130
131    @BindingAdapter("android:onAnimationStart")
132    public static void setListener(ViewGroup view, final OnAnimationStart start) {
133        setListener(view, start, null, null);
134    }
135
136    @BindingAdapter("android:onAnimationEnd")
137    public static void setListener(ViewGroup view, final OnAnimationEnd end) {
138        setListener(view, null, end, null);
139    }
140
141    @BindingAdapter("android:onAnimationRepeat")
142    public static void setListener(ViewGroup view, final OnAnimationRepeat repeat) {
143        setListener(view, null, null, repeat);
144    }
145
146    public interface OnChildViewAdded {
147        void onChildViewAdded(View parent, View child);
148    }
149
150    public interface OnChildViewRemoved {
151        void onChildViewRemoved(View parent, View child);
152    }
153
154    public interface OnAnimationStart {
155        void onAnimationStart(Animation animation);
156    }
157
158    public interface OnAnimationEnd {
159        void onAnimationEnd(Animation animation);
160    }
161
162    public interface OnAnimationRepeat {
163        void onAnimationRepeat(Animation animation);
164    }
165}
166