1 /*
2  * Copyright (C) 2022 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.util
18 
19 import android.content.Context
20 import android.util.AttributeSet
21 import com.android.systemui.R
22 
23 class DelayableMarqueeTextView @JvmOverloads constructor(
24     context: Context,
25     attrs: AttributeSet? = null,
26     defStyleAttr: Int = 0,
27     defStyleRes: Int = 0
28 ) : SafeMarqueeTextView(context, attrs, defStyleAttr, defStyleRes) {
29 
30     var marqueeDelay: Long = DEFAULT_MARQUEE_DELAY
31     private var wantsMarquee = false
32     private var marqueeBlocked = true
33 
34     private val enableMarquee = Runnable {
35         if (wantsMarquee) {
36             marqueeBlocked = false
37             startMarquee()
38         }
39     }
40 
41     init {
42         val typedArray = context.theme.obtainStyledAttributes(
43                 attrs,
44                 R.styleable.DelayableMarqueeTextView,
45                 defStyleAttr,
46                 defStyleRes
47         )
48         marqueeDelay = typedArray.getInteger(
49                 R.styleable.DelayableMarqueeTextView_marqueeDelay,
50                 DEFAULT_MARQUEE_DELAY.toInt()
51         ).toLong()
52         typedArray.recycle()
53     }
54 
55     override fun startMarquee() {
56         if (!isSelected) {
57             return
58         }
59         wantsMarquee = true
60         if (marqueeBlocked) {
61             if (handler?.hasCallbacks(enableMarquee) == false) {
62                 postDelayed(enableMarquee, marqueeDelay)
63             }
64             return
65         }
66         super.startMarquee()
67     }
68 
69     override fun stopMarquee() {
70         handler?.removeCallbacks(enableMarquee)
71         wantsMarquee = false
72         marqueeBlocked = true
73         super.stopMarquee()
74     }
75 
76     companion object {
77         const val DEFAULT_MARQUEE_DELAY = 2000L
78     }
79 }
80