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      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 
     17 package com.android.deskclock.timer;
     18 
     19 import android.content.Context;
     20 import android.os.SystemClock;
     21 import android.text.TextUtils;
     22 import android.util.AttributeSet;
     23 import android.widget.ImageView;
     24 import android.widget.LinearLayout;
     25 import android.widget.TextView;
     26 
     27 import com.android.deskclock.CircleButtonsLayout;
     28 import com.android.deskclock.R;
     29 import com.android.deskclock.data.Timer;
     30 
     31 /**
     32  * This view is a visual representation of a {@link Timer}.
     33  */
     34 class 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 }