1 /*
2  * Copyright (C) 2023 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.tv.notifications;
18 
19 import android.annotation.NonNull;
20 import android.app.Activity;
21 import android.app.NotificationManager;
22 import android.content.Intent;
23 import android.graphics.drawable.ColorDrawable;
24 import android.os.Bundle;
25 import android.service.notification.StatusBarNotification;
26 import android.util.SparseArray;
27 import android.view.Gravity;
28 import android.view.View;
29 
30 import androidx.leanback.widget.VerticalGridView;
31 
32 import com.android.systemui.tv.res.R;
33 
34 import java.util.function.Consumer;
35 
36 import javax.inject.Inject;
37 
38 /**
39  * This Activity shows a notification panel for tv. It is used if no other app (e.g. a launcher) can
40  * be found to show the notifications.
41  */
42 public class TvNotificationPanelActivity extends Activity implements
43         TvNotificationHandler.Listener {
44     private final TvNotificationHandler mTvNotificationHandler;
45     private TvNotificationAdapter mTvNotificationAdapter;
46     private VerticalGridView mNotificationListView;
47     private View mNotificationPlaceholder;
48     private boolean mPanelAlreadyOpen = false;
49     private final Consumer<Boolean> mBlurConsumer = this::enableBlur;
50 
51     @Inject
TvNotificationPanelActivity(TvNotificationHandler tvNotificationHandler)52     public TvNotificationPanelActivity(TvNotificationHandler tvNotificationHandler) {
53         super();
54         mTvNotificationHandler = tvNotificationHandler;
55     }
56 
57     @Override
onCreate(Bundle savedInstanceState)58     protected void onCreate(Bundle savedInstanceState) {
59         super.onCreate(savedInstanceState);
60 
61         if (maybeClosePanel(getIntent())) {
62             return;
63         }
64         mPanelAlreadyOpen = true;
65 
66         setContentView(R.layout.notification_panel);
67 
68         mNotificationPlaceholder = findViewById(R.id.no_notifications);
69         mTvNotificationAdapter = new TvNotificationAdapter();
70 
71         mNotificationListView = findViewById(R.id.notifications_list);
72         mNotificationListView.setAdapter(mTvNotificationAdapter);
73         mNotificationListView.setColumnWidth(R.dimen.notification_panel_width);
74 
75         mTvNotificationHandler.setTvNotificationListener(this);
76         notificationsUpdated(mTvNotificationHandler.getCurrentNotifications());
77     }
78 
79     @Override
notificationsUpdated(@onNull SparseArray<StatusBarNotification> notificationList)80     public void notificationsUpdated(@NonNull SparseArray<StatusBarNotification> notificationList) {
81         mTvNotificationAdapter.setNotifications(notificationList);
82 
83         boolean noNotifications = notificationList.size() == 0;
84         mNotificationListView.setVisibility(noNotifications ? View.GONE : View.VISIBLE);
85         mNotificationPlaceholder.setVisibility(noNotifications ? View.VISIBLE : View.GONE);
86     }
87 
88     @Override
onNewIntent(Intent intent)89     public void onNewIntent(Intent intent) {
90         super.onNewIntent(intent);
91         maybeClosePanel(intent);
92     }
93 
94     /**
95      * Handles intents from onCreate and onNewIntent.
96      *
97      * @return true if the panel is being closed, false if it is being opened
98      */
maybeClosePanel(Intent intent)99     private boolean maybeClosePanel(Intent intent) {
100         if (NotificationManager.ACTION_CLOSE_NOTIFICATION_HANDLER_PANEL.equals(intent.getAction())
101                 || (mPanelAlreadyOpen
102                 && NotificationManager.ACTION_TOGGLE_NOTIFICATION_HANDLER_PANEL.equals(
103                 intent.getAction()))) {
104             finish();
105             return true;
106         }
107         return false;
108     }
109 
110     @Override
onAttachedToWindow()111     public void onAttachedToWindow() {
112         super.onAttachedToWindow();
113         getWindow().setGravity(Gravity.END);
114         getWindowManager().addCrossWindowBlurEnabledListener(mBlurConsumer);
115     }
116 
enableBlur(boolean enabled)117     private void enableBlur(boolean enabled) {
118         if (enabled) {
119             int blurRadius = getResources().getDimensionPixelSize(
120                     R.dimen.notification_blur_radius);
121             getWindow().setBackgroundDrawable(
122                     new ColorDrawable(getColor(R.color.notification_blur_background_color)));
123             getWindow().setBackgroundBlurRadius(blurRadius);
124         } else {
125             getWindow().setBackgroundDrawable(
126                     new ColorDrawable(getColor(R.color.notification_default_background_color)));
127             getWindow().setBackgroundBlurRadius(0);
128         }
129     }
130 
131     @Override
onDetachedFromWindow()132     public void onDetachedFromWindow() {
133         super.onDetachedFromWindow();
134         getWindowManager().removeCrossWindowBlurEnabledListener(mBlurConsumer);
135     }
136 
137     @Override
onDestroy()138     public void onDestroy() {
139         super.onDestroy();
140         mTvNotificationHandler.setTvNotificationListener(null);
141     }
142 }
143