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.phone;
18 
19 import android.content.Context;
20 import android.text.TextUtils;
21 import android.util.AttributeSet;
22 import android.view.View;
23 import android.widget.TextView;
24 
25 /**
26  * A view to show hints on Keyguard ("Swipe up to unlock", "Tap again to open").
27  */
28 public class KeyguardIndicationTextView extends TextView {
29 
KeyguardIndicationTextView(Context context)30     public KeyguardIndicationTextView(Context context) {
31         super(context);
32     }
33 
KeyguardIndicationTextView(Context context, AttributeSet attrs)34     public KeyguardIndicationTextView(Context context, AttributeSet attrs) {
35         super(context, attrs);
36     }
37 
KeyguardIndicationTextView(Context context, AttributeSet attrs, int defStyleAttr)38     public KeyguardIndicationTextView(Context context, AttributeSet attrs, int defStyleAttr) {
39         super(context, attrs, defStyleAttr);
40     }
41 
KeyguardIndicationTextView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)42     public KeyguardIndicationTextView(Context context, AttributeSet attrs, int defStyleAttr,
43             int defStyleRes) {
44         super(context, attrs, defStyleAttr, defStyleRes);
45     }
46 
47     /**
48      * Changes the text with an animation and makes sure a single indication is shown long enough.
49      *
50      * @param text The text to show.
51      */
switchIndication(CharSequence text)52     public void switchIndication(CharSequence text) {
53 
54         // TODO: Animation, make sure that we will show one indication long enough.
55         if (TextUtils.isEmpty(text)) {
56             setVisibility(View.INVISIBLE);
57         } else {
58             setVisibility(View.VISIBLE);
59             setText(text);
60         }
61     }
62 
63     /**
64      * See {@link #switchIndication}.
65      */
switchIndication(int textResId)66     public void switchIndication(int textResId) {
67         switchIndication(getResources().getText(textResId));
68     }
69 }
70