Flex的时间输入组件

        前几天因Flex项目中需要在DataGrid中输入时间，在网上搜寻到Plum中的一个TimeInput组件，试用了一下，发现单独使用没有问题，但在DataGrid中作为ItemEditor来调用，无法获得原来的值。经过调试研究，修改了几处代码，使得TimeInput可以传递字符串数据，可以在DataGrid中使用，时间值也从原来的时：分改成了时：分：秒。

代码如下：

package
{
    import flash.events.Event;
    import flash.events.FocusEvent;
    import flash.text.TextLineMetrics;
    import mx.core.UITextField;
    import mx.containers.HBox;
    import mx.controls.TextInput;
    import mx.controls.Button;
    import mx.events.FlexEvent;
    import mx.controls.Text;
    import mx.core.mx_internal;
    import mx.managers.IFocusManager;
    import mx.controls.NumericStepper;
    
    //import com.eshangrao.util.StringToolkit;
    
    use namespace mx_internal;
    
    /**
    * Dispatched when the time changes, which could be either the hour, minute.
    */    
    [Event(name="change",type="flash.events.Event")]
    /**
    * Dispatched when the hour changes.
    */    
    [Event(name="hoursChange",type="flash.events.Event")]
    /**
    * Dispatched when the minutes change.
    */    
    [Event(name="minutesChange",type="flash.events.Event")]
    /**
    * Dispatched when the seconds change.
    */    
    [Event(name="secondsChange",type="flash.events.Event")]

    public class TimeInputEx extends NumericStepper
    {
        public static function formatNumberWithChar(value:Number,length:int=2,pref:String="0"):String{
            var str:String=new String(value);
            var len:int=str.length;
            
            if(len>length)
                return str.substr(0,length);
            else{
                var n:int=length-len;
                for(var i:int=0;i < n ; i++) {
                    str =pref+str;
                 }
                return str;
            }
        }

        public function TimeInputEx()
        {
            super();
            this.maxChars =2;
             this.minimum =0;
             this.maximum =23;
             this.stepSize =1;
             this.addEventListener(FlexEvent.VALUE_COMMIT,valueCommandHandler);
        }
        //--------------------------------------------------------------------------
        //
        //  Variables
        //
        //--------------------------------------------------------------------------
        
        /**
         *  @private
         */
        protected  var inputBox:HBox;
        
        /**
         *  @private
         */
        protected  var sText:Text;
        protected  var sText2:Text;
                
        /**
         *  @private
         */
        protected  var hoursInputField:TextInput;
        
        /**
         *  @private
         */
        protected  var minutesInputField:TextInput;
    
        /**
         *  @private
         */
        protected  var secondsInputField:TextInput;
    
        /**
         *  @private
         */
        protected var _hours:Number  = 0;
         /**
         *  @private
         */
        protected var _minutes:Number  = 0;
         /**
         *  @private
         */
        protected var _seconds:Number  = 0;
         /**
         *  @private
         */
        protected var _time:Date;
        /**
         *  @private
         */
        protected var _text:String;
         /**
         *  @private
         */
        private var _enabled:Boolean =true;
        
         override protected function createChildren():void
        {
            super.createChildren();
            if(!inputBox)
            {
                inputBox =new  HBox();
                inputBox.setStyle("paddingLeft",0);
                inputBox.setStyle("paddingRight",0);
                inputBox.setStyle("paddingTop",0);
                inputBox.setStyle("paddingBottom",0);
                inputBox.setStyle("horizontalGap",0);
                inputBox.setStyle("borderStyle","solid");
                inputBox.setStyle("verticalAlign","middle");
                addChild(inputBox);
            }
            
            var widestNumber:Number =61;
             var lineMetrics:TextLineMetrics  = measureText(widestNumber.toString());
             var textWidth:Number  = lineMetrics.width  + UITextField.TEXT_WIDTH_PADDING+4;
            if (!hoursInputField)
            {
                hoursInputField  = new  TextInput();                
                hoursInputField.focusEnabled  = false;
                 hoursInputField.styleName  = this;
                 hoursInputField.width =textWidth;
                 // restrict to numbers - dashes - commas - decimals
                hoursInputField.restrict  = "0-9" ;
                hoursInputField.maxChars  = 2;
                 hoursInputField.text  = formatNumberWithChar(_hours,2,"0");
                 //hoursInputField.parentDrawsFocus  = true;
                 hoursInputField.setStyle("textAlign","right");
                hoursInputField.setStyle("borderStyle","none");                
                hoursInputField.setStyle("paddingLeft",0);
                hoursInputField.setStyle("paddingRight",0);
                hoursInputField.setStyle("paddingTop",0);
                hoursInputField.setStyle("paddingBottom",0);
                hoursInputField.setStyle("horizontalGap",0);
                
                
                hoursInputField.addEventListener(FocusEvent.FOCUS_IN,inputField_focusInHandler);
                hoursInputField.addEventListener(FocusEvent.FOCUS_OUT, inputField_focusOutHandler);
                
                inputBox.addChild(hoursInputField);
            }
            inputField =hoursInputField;
             if(!sText){
                sText =new  Text();
                sText.text =":" ;
                sText.setStyle("textAlign","center");
                sText.setStyle("paddingLeft",0);
                sText.setStyle("paddingRight",0);
                sText.setStyle("paddingTop",0);
                sText.setStyle("paddingBottom",0);
                sText.setStyle("horizontalGap",0);
                inputBox.addChild(sText);
            }
            if (!minutesInputField)
            {
                minutesInputField  = new  TextInput();            
                minutesInputField.focusEnabled  = false;    
                 minutesInputField.styleName  = this;
                 minutesInputField.width =textWidth;
    
                 // restrict to numbers - dashes - commas - decimals
                minutesInputField.restrict  = "0-9" ;
    
                minutesInputField.maxChars  = 2;
                 minutesInputField.text  = formatNumberWithChar(_minutes,2,"0");
                 //minutesInputField.parentDrawsFocus  = true;
                
                 minutesInputField.setStyle("textAlign","left");
                minutesInputField.setStyle("borderStyle","none");        
                minutesInputField.setStyle("paddingLeft",0);
                minutesInputField.setStyle("paddingRight",0);
                minutesInputField.setStyle("paddingTop",0);
                minutesInputField.setStyle("paddingBottom",0);
                minutesInputField.setStyle("horizontalGap",0);
                minutesInputField.addEventListener(FocusEvent.FOCUS_IN,inputField_focusInHandler);
                minutesInputField.addEventListener(FocusEvent.FOCUS_OUT, inputField_focusOutHandler);
                
                inputBox.addChild(minutesInputField);
            }
            if(!sText2){
                sText2 =new  Text();
                sText2.text =":" ;
                sText2.setStyle("textAlign","center");
                sText2.setStyle("paddingLeft",0);
                sText2.setStyle("paddingRight",0);
                sText2.setStyle("paddingTop",0);
                sText2.setStyle("paddingBottom",0);
                sText2.setStyle("horizontalGap",0);
                inputBox.addChild(sText2);
            }
            if (!secondsInputField)
            {
                secondsInputField  = new  TextInput();            
                secondsInputField.focusEnabled  = false;    
                 secondsInputField.styleName  = this;
                 secondsInputField.width =textWidth;
    
                 // restrict to numbers - dashes - commas - decimals
                secondsInputField.restrict  = "0-9" ;
    
                secondsInputField.maxChars  = 2;
                 secondsInputField.text  = formatNumberWithChar(_seconds,2,"0");
                 //secondsInputField.parentDrawsFocus  = true;
                
                 secondsInputField.setStyle("textAlign","left");
                secondsInputField.setStyle("borderStyle","none");        
                secondsInputField.setStyle("paddingLeft",0);
                secondsInputField.setStyle("paddingRight",0);
                secondsInputField.setStyle("paddingTop",0);
                secondsInputField.setStyle("paddingBottom",0);
                secondsInputField.setStyle("horizontalGap",0);
                secondsInputField.addEventListener(FocusEvent.FOCUS_IN,inputField_focusInHandler);
                secondsInputField.addEventListener(FocusEvent.FOCUS_OUT, inputField_focusOutHandler);
                
                inputBox.addChild(secondsInputField);
            }
        }
        
         /**
         *  @private
         *  Return the preferred sizes of the stepper.
         */
        override protected function measure():void
        {
            super.measure();
            var inputBoxHeight:Number  = inputBox.getExplicitOrMeasuredHeight();
             var buttonHeight:Number  = prevButton.getExplicitOrMeasuredHeight()  +
                                      nextButton.getExplicitOrMeasuredHeight();
    
            var h:Number  = Math.max(inputBoxHeight,  buttonHeight);
            h  = Math.max(DEFAULT_MEASURED_MIN_HEIGHT,  h);
    
            var inputBoxWidth:Number  = inputBox.getExplicitOrMeasuredWidth();
             var buttonWidth:Number  = Math.max(prevButton.getExplicitOrMeasuredWidth(),
                                               nextButton.getExplicitOrMeasuredWidth());
    
            var w:Number  = inputBoxWidth  + buttonWidth;
            w  = Math.max(DEFAULT_MEASURED_MIN_WIDTH,  w);
    
            measuredMinWidth  = DEFAULT_MEASURED_MIN_WIDTH;
             measuredMinHeight  = DEFAULT_MEASURED_MIN_HEIGHT;
    
             measuredWidth  = w;
             measuredHeight  = h;
         }
        /**
         *  @private
         *  Place the buttons to the right of the text field.
         */
        override protected function updateDisplayList(unscaledWidth:Number,
                                                      unscaledHeight:Number):void
        {
            super.updateDisplayList(unscaledWidth, unscaledHeight);
            
            var w:Number  = nextButton.getExplicitOrMeasuredWidth();
             var h:Number  = Math.round(unscaledHeight  / 2);
            var h2:Number  = unscaledHeight  - h;
    
            nextButton.x  = unscaledWidth  - w;
            nextButton.y  = 0;
             nextButton.setActualSize(w, h2);
           
            prevButton.x  = unscaledWidth  - w;
            prevButton.y  = unscaledHeight  - h;
            prevButton.setActualSize(w, h);
            var inputBoxHeight:Number  = inputBox.getExplicitOrMeasuredHeight();
             var inputBoxWidth:Number  = inputBox.getExplicitOrMeasuredWidth();
             //inputBox.setActualSize(unscaledWidth - w, unscaledHeight);
            inputBox.setActualSize(inputBoxWidth,inputBoxHeight);    
        }
       
         /**
         *  @private
         */
        private function inputField_focusInHandler(event:FocusEvent):void
        {
            if (this.listData) {
                this.Caption  = this.listData.label;
             }
            inputField =event.currentTarget  as TextInput;
            if(event.currentTarget as TextInput  ==  hoursInputField){
                this.value =parseInt(inputField.text);
                 this.minimum =0;
                 this.maximum =23;
             }else{
                this.value =parseInt(inputField.text);
                 this.minimum =0;
                 this.maximum =59;
             }
            
            focusInHandler(event);
            
            // Send out a new FocusEvent because the TextInput eats the event
            // Make sure that it does not bubble.
            dispatchEvent(new FocusEvent(event.type, false, false,
                                         event.relatedObject,
                                         event.shiftKey, event.keyCode));
        }
    
        /**
         *  @private
         */
        private function inputField_focusOutHandler(event:FocusEvent):void
        {
            if (this.listData) {
                this.listData.label  = this.Caption;
             }
            focusOutHandler(event);
            
            // Send out a new FocusEvent because the TextInput eats the event
            // Make sure that it does not bubble
            dispatchEvent(new FocusEvent(event.type, false, false,
                                         event.relatedObject,
                                         event.shiftKey,event.keyCode));
        }
        
        /**
         * @private
         * 
         * do for format number to string
         */
        private function valueCommandHandler(event:FlexEvent):void{
            //var v =this.value;
             inputField.text =formatNumberWithChar(value,2,"0");
             if(inputField ==hoursInputField){
                 this.hours =value;
             }
            else if(inputField ==minutesInputField){
                 this.minutes =value;
             }
            else if(inputField ==secondsInputField){
                 this.seconds =value;
             }
            this.Caption =formatNumberWithChar(this.hours,2,"0")
                 +":"+formatNumberWithChar(this.minutes,2,"0")
                +":"+formatNumberWithChar(this.seconds,2,"0");
            
        }
        
         /**
         *  @private
         *  Remove the focus from the text field.
         */
        override protected function focusInHandler(event:FocusEvent):void
        {
            super.focusInHandler(event);
    
            var fm:IFocusManager  = focusManager;
             if (fm)
                fm.defaultButtonEnabled  = false;
         }
        [Bindable]
        /**
         * The hours (an integer from 0 to 23) of the day.  
         * 
         * @default 0
         */        
        public function get hours():Number
        {
            return _hours;
        }
        
        [Inspectable(defaultValue =0,category="Time",name="Hours")]
         public function set hours(val:Number):void
        {
            if (val  > = 0 || val  < = 24 )
            {
                this._hours  = val;
                 if(inputField){
                    if(inputField ==hoursInputField  && val! =value)
                         value =val;
                     else{
                        hoursInputField.text =formatNumberWithChar(val,2,"0");
                     }
                }
            }        
            
            dispatchEvent(new Event("hoursChange"));
            dispatchEvent(new Event("change"));
        }
        
        [Bindable]
        /**
         * The minutes (an integer from 0 to 59) passed in the hours.
         * 
         * @default 30
         */        
        public function get minutes():Number
        {
            return _minutes;
        }
        
        [Inspectable(defaultValue =30,category="Time",name="Minutes")]
         public function set minutes(val:Number):void
        {
            if (val  > = 0 || val  < = 59 )
            {
                this._minutes  = val;
                 if(inputField){
                    if(inputField ==minutesInputField  && val! =value)
                         value =val;
                     else{
                        minutesInputField.text =formatNumberWithChar(val,2,"0");
                     }
                }
            }
            
            dispatchEvent(new Event("minutesChange"));
            dispatchEvent(new Event("change"));
        }
        
        [Bindable]
        /**
         * The seconds (an integer from 0 to 59) passed in the hours.
         * 
         * @default 30
         */        
        public function get seconds():Number
        {
            return _seconds;
        }
        
        [Inspectable(defaultValue =30,category="Time",name="Seconds")]
         public function set seconds(val:Number):void
        {
            if (val  > = 0 || val  < = 59 )
            {
                this._seconds  = val;
                 if(inputField){
                    if(inputField ==secondsInputField  && val! =value)
                         value =val;
                     else{
                        secondsInputField.text =formatNumberWithChar(val,2,"0");
                     }
                }
            }
            
            dispatchEvent(new Event("secondsChange"));
            dispatchEvent(new Event("change"));
        }
        
        public function get Time():Date{
            var d:Date =new  Date();
            d.hours =_hours;
             d.minutes =_minutes;
             d.seconds =_seconds;
             return d;
        }
        public function set Time(time:Date):void{
            this._time =time;
             this.hours =time.hours;
             this.minutes =time.minutes;
             this.seconds =time.seconds;
         }
        
        [Bindable]
        public function get Caption():String{
            return _text;
        }
        [Inspectable(defaultValue ="00:00:00" ,category ="Caption" ,name ="Caption" )]
        public function set Caption(timestr:String):void{
            this._text =timestr;
             this.hours =Number(timestr.substring(0,2));
             this.minutes =Number(timestr.substring(3,5));
             this.seconds =Number(timestr.substring(6,8));
         }
        
         /**
         *  @private
         */
        override public function set enabled(value:Boolean):void
        {
            _enabled  = value;
             if(hoursInputField){
                hoursInputField.enabled =value;
                    minutesInputField.enabled =value;      
                    secondsInputField.enabled =value;      
                    sText.enabled =value;
                    sText2.enabled =value;
                    nextButton.enabled =value;
                    prevButton.enabled =value;
             }
            
        }
        
    
        /**
         *  @private
         */
      
        override public function get enabled():Boolean
        {
            return _enabled;
        }
        
    }
}

将此代码保存为TimeInputEx.as文件，与你的工程文件放在同一目录下，即可调用。

完整的演示代码如下：

<? xml version="1.0" encoding="utf-8" ?>
< mx:Application  creationComplete ="init();"  xmlns:mx ="http://www.adobe.com/2006/mxml"  layout ="horizontal"  xmlns:ns1 ="*" >

< mx:Script >
     <![CDATA[

        private function init():void{
            ac.addItem({starttime:"00:00:00", endtime:"01:00:00", program:""});
            ac.addItem({starttime:"01:00:00", endtime:"02:00:00", program:""});
        }

     ]]>

</ mx:Script >

 
     < mx:DateFormatter  id ="timeFormatter"  formatString ="J:NN:SS A"   />
    
     < mx:ArrayCollection  id ="ac" />

     < mx:Panel  layout ="absolute"  paddingLeft ="5"  paddingRight ="5"  paddingTop ="5"  paddingBottom ="5"  title ="TimeInput"  width ="287"  height ="224" >
         < ns1:TimeInputEx  hours ="3"  minutes ="45"  seconds ="30"  Caption ="03:45:30"  id ="timeInput"  left ="10"  right ="150"  top ="10" />
         < mx:DataGrid  textAlign ="center"  id ="dg"  dataProvider ="{ac}"  sortableColumns ="false"  fontSize ="14"  editable ="true"  alternatingItemColors ="[#ffffff, #d1d1d1]"  headerColors ="[#ffffff, #d1d1d1]"  alpha ="0.6"   left ="10"  right ="10"  top ="51"  bottom ="29" >
             < mx:columns >
                      < mx:DataGridColumn  headerText ="start time"  dataField ="starttime"   textAlign ="center"   editable ="true"  minWidth ="125"  itemEditor ="TimeInputEx"  editorDataField ="Caption" />
                < mx:DataGridColumn  headerText ="end time"  dataField ="endtime"   textAlign ="center"  editable ="true"  minWidth ="125"  itemEditor ="TimeInputEx"  editorDataField ="Caption" />
             </ mx:columns >     
         </ mx:DataGrid >
     </ mx:Panel >
    
     < mx:Panel  layout ="vertical"  paddingLeft ="5"  paddingRight ="5"  paddingTop ="5"  paddingBottom ="5"  title ="time now" >
         < mx:Text  text ="hours:{TimeInputEx.hours}" />
         < mx:Text  text ="minutes:{TimeInputEx.minutes}" />
         < mx:Text  text ="seconds:{TimeInputEx.seconds}" />
         < mx:Text  text ="caption:{TimeInputEx.Caption}" />
         < mx:Button  label ="setTime to 8:10:03"  click ="TimeInputEx.Caption='08:10:03'"   />
         < mx:Button  label ="switchEnable"  click ="if(TimeInputEx.enabled) TimeInputEx.enabled=false; else TimeInputEx.enabled=true;" />
     </ mx:Panel >
</ mx:Application >

 

在此感谢feiy网友提供的TimeInput组件。请访问http://www.eshangrao.com/index.php/2007/08/08/427-timeinputflex获得TimeInput组件。