<?xml version="1.0" encoding="utf-8"?>
<!--

  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
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  See the License for the specific language governing permissions and
  limitations under the License.

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<s:View xmlns:fx="http://ns.adobe.com/mxml/2009" 
        xmlns:s="library://ns.adobe.com/flex/spark" 
        title="Android Timer"
        backgroundColor="0x666666">
    
    <fx:Script>
        <![CDATA[
            import mx.core.mx_internal;
            import mx.events.FlexEvent;
            
            import spark.components.SpinnerList;
            import spark.events.ViewNavigatorEvent;
            use namespace mx_internal;

            private var timer:Timer;
            private function startTimerCountdown(event:MouseEvent):void
            {
                // kickoff the timer
                if (timer == null){
                    timer = new Timer(1000);
                    timer.addEventListener(TimerEvent.TIMER, handleTimerUpdate);
                    timer.start();
                }
            }
            
            private function handleTimerUpdate(event:TimerEvent):void
            {
                // decrement the seconds spinner
                var currentSecondsIndex:int = secondsSpinner.selectedIndex;
                var nextSecondsIndex:int = currentSecondsIndex + 1;
                
                if (currentSecondsIndex >= secondsSpinner.dataProvider.length - 1){
                    // seconds loops back to zero
                    nextSecondsIndex = 0;
                    
                    // reached zero seconds so decrement the minute spinner
                    var currentMinutesIndex:int = minutesSpinner.selectedIndex;
                    var nextMinutesIndex:int = currentMinutesIndex + 1;
                    
                    if (currentMinutesIndex >= minutesSpinner.dataProvider.length - 1){
                        // minutes loops back to zero
                        nextMinutesIndex = 0;
                        
                        // reached zero minutes so decrement the hour spinner
                        var currentHoursIndex:int = hoursSpinner.selectedIndex;
                        var nextHoursIndex:int = currentHoursIndex + 1;
                        
                        if (currentHoursIndex >= hoursSpinner.dataProvider.length - 1){
                            nextHoursIndex = 0;
                            
                            // the timer has reached 0,0,0 so ring the alarm
                            handleTimerCompleted();
                            // return so the spinners stay at the last index
                            return;
                        } else {
                            hoursSpinner.animateToSelectedIndex(nextHoursIndex);
                        }
                        
                        minutesSpinner.selectedIndex = 0;       
                    } else {
                        minutesSpinner.animateToSelectedIndex(nextMinutesIndex);
                    }
                    
                    secondsSpinner.selectedIndex = 0;
                } else {
                    secondsSpinner.animateToSelectedIndex(nextSecondsIndex);
                }
                
            }
            
            private function handleTimerCompleted():void {
                stopTimer();
                alarmNotification.open(this, true);
                
                // put the start button back
                startStopButton.label = "Start";
                startStopButton.setStyle("chromeColor", "green");
                
                trace('Timer Complete');
                trace('Ring!');
            }
            
            private function stopTimer():void {
                timer.removeEventListener(TimerEvent.TIMER, handleTimerUpdate);
                timer.stop();
                timer = null;
            }
            
            private function resetSpinner(event:MouseEvent):void
            {
                hoursSpinner.selectedIndex = hoursSpinner.dataProvider.length - 1;
                minutesSpinner.selectedIndex = 0;
                secondsSpinner.selectedIndex = secondsSpinner.dataProvider.length - 1;
            }
            
            private function setInitialHourValue(event:FlexEvent):void
            {
                hoursSpinner.selectedIndex = hoursSpinner.dataProvider.length - 1;
            }
            
            private function setInitialMinuteValue(event:FlexEvent):void
            {
                minutesSpinner.selectedIndex = 0;
            }
            
            private function setInitialSecondsValue(event:FlexEvent):void
            {
                secondsSpinner.selectedIndex = secondsSpinner.dataProvider.length - 1;
            }
            
            private function toggleStartTop(event:MouseEvent):void
            {
                if (timer && timer.running) {
                    // stop the timer
                    stopTimer();
                    startStopButton.label = "Start";
                    startStopButton.setStyle("chromeColor", "green");
                }  else {
                    // start the timer
                    startTimerCountdown(event);
                    startStopButton.label = "Stop";
                    startStopButton.setStyle("chromeColor", "red");
                }
            }
            
        ]]>
    </fx:Script>
    
    <fx:Declarations>
        <s:SkinnablePopUpContainer id="alarmNotification"
                                   width="300" height="300"
                                   click="alarmNotification.close()">
            <s:Rect width="100%" height="100%">
                <s:fill>
                    <s:SolidColor color="green" />
                </s:fill>
            </s:Rect>
            <s:Label text="RING!" color="white" horizontalCenter="0" verticalCenter="0" />
            
            <s:Button label="Dismiss" click="alarmNotification.close()" horizontalCenter="0" bottom="10" />
        </s:SkinnablePopUpContainer>
    </fx:Declarations>

    <s:layout>
        <s:VerticalLayout paddingLeft="5" paddingRight="5" paddingTop="20" />
    </s:layout>

    <s:HGroup width="100%" horizontalAlign="center" gap="10">
        
        <s:VGroup horizontalAlign="center">
            <s:Label text="Hours" color="0xCCCCCC" />
            <s:SpinnerList id="hoursSpinner" typicalItem="31" 
                           skinClass="skins.AndroidSpinnerListSkin"
                           wrapElements="false" creationComplete="setInitialHourValue(event)">
                <s:dataProvider>
                    <s:ArrayList>
                        <s:source>
                            [12,11,10,09,08,07,06,05,04,03,02,01,00]
                        </s:source>
                    </s:ArrayList>
                </s:dataProvider>
            </s:SpinnerList>
        </s:VGroup>
        
        <s:VGroup horizontalAlign="center">
            <s:Label text="Minutes" color="0xCCCCCC" />
            <s:SpinnerList id="minutesSpinner" typicalItem="12"
                           skinClass="skins.AndroidSpinnerListSkin"
                           wrapElements="false" creationComplete="setInitialMinuteValue(event)">
                <s:dataProvider>
                    <s:NumericDataProvider minimum="0" maximum="59" stepSize="-1" />
                </s:dataProvider>
            </s:SpinnerList>
        </s:VGroup>
        
        <s:VGroup horizontalAlign="center">
            <s:Label text="Seconds" color="0xCCCCCC" />
            <s:SpinnerList id="secondsSpinner" typicalItem="2005" fontSize="80"
                           skinClass="skins.AndroidSpinnerListWhiteSkin"
                           wrapElements="false" creationComplete="setInitialSecondsValue(event)">
                <s:dataProvider>
                    <s:NumericDataProvider minimum="0" maximum="59" stepSize="-1" />
                </s:dataProvider>
            </s:SpinnerList>    
        </s:VGroup>
        
    </s:HGroup>
    
    <s:Group height="100%" width="100%">
        <s:HGroup horizontalCenter="0" verticalCenter="0" width="80%">
            <s:Button id="startStopButton" color="white" label="Start" click="toggleStartTop(event)" chromeColor="green" width="50%" />
            <s:Button label="Reset" click="resetSpinner(event)" color="white" chromeColor="0x222222" width="50%" />
        </s:HGroup> 
    </s:Group>
    
</s:View>