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 */
16
17package com.android.deskclock.timer;
18
19import android.content.Context;
20import android.os.SystemClock;
21import android.text.TextUtils;
22import android.util.AttributeSet;
23import android.widget.ImageView;
24import android.widget.LinearLayout;
25import android.widget.TextView;
26
27import com.android.deskclock.CircleButtonsLayout;
28import com.android.deskclock.R;
29import com.android.deskclock.data.Timer;
30
31/**
32 * This view is a visual representation of a {@link Timer}.
33 */
34class TimerItem extends LinearLayout {
35
36    /** Displays the remaining time or time since expiration. */
37    private CountingTimerView mTimerText;
38
39    /** Displays timer progress as a color circle that changes from white to red. */
40    private TimerCircleView mCircleView;
41
42    /** A button that either resets the timer or adds time to it, depending on its state. */
43    private ImageView mResetAddButton;
44
45    /** Displays the label associated with the timer. Tapping it presents an edit dialog. */
46    private TextView mLabelView;
47
48    /** The last state of the timer that was rendered; used to avoid expensive operations. */
49    private Timer.State mLastState;
50
51    public TimerItem(Context context) {
52        this(context, null);
53    }
54
55    public TimerItem(Context context, AttributeSet attrs) {
56        super(context, attrs);
57    }
58
59    @Override
60    protected void onFinishInflate() {
61        super.onFinishInflate();
62        mLabelView = (TextView) findViewById(R.id.timer_label);
63        mResetAddButton = (ImageView) findViewById(R.id.reset_add);
64        mCircleView = (TimerCircleView) findViewById(R.id.timer_time);
65        mTimerText = (CountingTimerView) findViewById(R.id.timer_time_text);
66
67        // This layout positions dynamically positions the label and reset buttons.
68        final CircleButtonsLayout cbl = (CircleButtonsLayout) findViewById(R.id.timer_circle);
69        cbl.setCircleTimerViewIds(R.id.timer_time, R.id.reset_add, R.id.timer_label);
70    }
71
72    /**
73     * Updates this view to display the latest state of the {@code timer}.
74     */
75    void update(Timer timer) {
76        // Update the time.
77        mTimerText.setTime(timer.getRemainingTime(), false, true);
78
79        // Update the progress of the circle.
80        mCircleView.update(timer);
81
82        // Update the label if it changed.
83        final String label = timer.getLabel();
84        if (!TextUtils.equals(label, mLabelView.getText())) {
85            mLabelView.setText(label);
86        }
87
88        // Update visibility of things that may blink.
89        final boolean blinkOff = SystemClock.elapsedRealtime() % 1000 < 500;
90        mCircleView.setVisibility(timer.isExpired() && blinkOff ? INVISIBLE : VISIBLE);
91        mTimerText.showTime(!timer.isPaused() || !blinkOff);
92
93        // Update some potentially expensive areas of the user interface only on state changes.
94        if (timer.getState() != mLastState) {
95            mLastState = timer.getState();
96            switch (mLastState) {
97                case RESET: {
98                    final String resetDesc = getResources().getString(R.string.timer_reset);
99                    mResetAddButton.setImageResource(R.drawable.ic_reset);
100                    mResetAddButton.setContentDescription(resetDesc);
101                    mTimerText.setTimeStrTextColor(false, true);
102                    break;
103                }
104                case RUNNING: {
105                    final String addTimeDesc = getResources().getString(R.string.timer_plus_one);
106                    mResetAddButton.setImageResource(R.drawable.ic_plusone);
107                    mResetAddButton.setContentDescription(addTimeDesc);
108                    mTimerText.setTimeStrTextColor(false, true);
109                    break;
110                }
111                case PAUSED: {
112                    final String resetDesc = getResources().getString(R.string.timer_reset);
113                    mResetAddButton.setImageResource(R.drawable.ic_reset);
114                    mResetAddButton.setContentDescription(resetDesc);
115                    mTimerText.setTimeStrTextColor(false, true);
116                    break;
117                }
118                case EXPIRED: {
119                    final String addTimeDesc = getResources().getString(R.string.timer_plus_one);
120                    mResetAddButton.setImageResource(R.drawable.ic_plusone);
121                    mResetAddButton.setContentDescription(addTimeDesc);
122                    mTimerText.setTimeStrTextColor(true, true);
123                    break;
124                }
125            }
126        }
127    }
128}