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 
17 package com.android.systemui.statusbar;
18 
19 import android.content.Context;
20 import android.content.res.Configuration;
21 import android.util.AttributeSet;
22 import android.view.View;
23 import android.widget.TextView;
24 
25 import com.android.systemui.R;
26 import com.android.systemui.statusbar.stack.ExpandableViewState;
27 import com.android.systemui.statusbar.stack.StackScrollState;
28 
29 public class EmptyShadeView extends StackScrollerDecorView {
30 
31     private TextView mEmptyText;
32 
EmptyShadeView(Context context, AttributeSet attrs)33     public EmptyShadeView(Context context, AttributeSet attrs) {
34         super(context, attrs);
35     }
36 
37     @Override
onConfigurationChanged(Configuration newConfig)38     protected void onConfigurationChanged(Configuration newConfig) {
39         super.onConfigurationChanged(newConfig);
40         mEmptyText.setText(R.string.empty_shade_text);
41     }
42 
43     @Override
findContentView()44     protected View findContentView() {
45         return findViewById(R.id.no_notifications);
46     }
47 
48     @Override
onFinishInflate()49     protected void onFinishInflate() {
50         super.onFinishInflate();
51         mEmptyText = (TextView) findContentView();
52     }
53 
54     @Override
createNewViewState(StackScrollState stackScrollState)55     public ExpandableViewState createNewViewState(StackScrollState stackScrollState) {
56         return new EmptyShadeViewState();
57     }
58 
59     public class EmptyShadeViewState extends ExpandableViewState {
60         @Override
applyToView(View view)61         public void applyToView(View view) {
62             super.applyToView(view);
63             if (view instanceof EmptyShadeView) {
64                 EmptyShadeView emptyShadeView = (EmptyShadeView) view;
65                 boolean visible = this.clipTopAmount <= mEmptyText.getPaddingTop() * 0.6f;
66                 emptyShadeView.performVisibilityAnimation(
67                         visible && !emptyShadeView.willBeGone());
68             }
69         }
70     }
71 }
72