Add event listener to HTTPService call
Hi – I am using a HTTP service within my flex
application.
My HTTPServeice is connecting to an XML file:
<mx:HTTPService
id="myResults"
url="
http://localhost/myResults.xml"
resultFormat="e4x"
result="resultHandler(event)" />
the data within the XML file is constantly changing (the
structure remains the same, but the actual data within the
structure of the XML changes), therefore I am refreshing my
HTTPService results every 5 seconds:
[Bindable]
public var myDataFeed:XML;
private function initApp():void
var timedProcess:uint = setInterval(refreshResults, 5000);
private function refreshResults():void
myResults.send();
private function resultHandler(event:ResultEvent):void
myDataFeed = event.result as XML;
My problem is that sometimes the XML file needs longer than 5
seconds to load / refresh the data (as it is quite heavy)
etc… therefore I want to implement some sort of event
listener on the HTTPService to let the application know when the
results have been refreshed so I can restrict / the 5 second
refresh taking place until the previos refresh is complete
etc…
is this possible – to set an event listener to a
HTTPService to know when it has completed refreshing results from
an XML file???
Thanks,
Jon.
result="resultHandler(event)" <--- is already an event
listener.
btw if you have a live XML you might want to consider xml
socket connection so that server will push data to client .(lot
more efficient)
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I'm having some trouble trying to figure out how this event listener will work.
The main application is building an arrayCollection of a calendarDay custom components which is displayed by a DataGroup.
Within each calendarDay custom component i may create an arrayList of a DriverDetailComponent custom components displayed within the calendarDay by a DataGroup.
If a user double clicks on the DriverDetailComponent that is two layers in I would like to change states of the main application. I'm having trouble figuring out what item in the main application to set the listener on. Please help.
I can't figure out how to post the below as scrollable code snips so this is very long.
Main application code:
<code><?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" xmlns:components="components.*"
preinitialize="readDataFile()"
creationComplete="buildRowTitles()"
width="1024" height="512" backgroundColor="#A4BDD8">
<s:states>
<s:State name="State1"/>
<s:State name="driverDetailState"/>
</s:states>
<!--
<fx:Style source="EventCalendar.css"/>
creationComplete="readDataFile()" creationComplete="driversList.send()"-->
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
<mx:DateFormatter id="myDateFormatter"
formatString="EEE, MMM D, YYYY"/>
<!--<s:HTTPService id="driversList"
url="files/drivers.xml"
result="driversList_resultHandler(event)"
fault="driversList_faultHandler(event)"/>
<s:HTTPService id="postDriversList"
url="files/drivers.xml"
method="POST"
result="postDriversList_resultHandler(event)"
/>-->
<!--<s:Move id="expandTab"
target="{labelTab}"
xBy="250"/>-->
</fx:Declarations>
<fx:Script>
<![CDATA[
import components.CalendarDay;
import components.TruckDriver;
import components.calendarDay;
import events.CancelChangeDriversEvent;
import events.ChangeDriversEvent;
import events.EditDriverEvent;
import mx.collections.ArrayCollection;
import mx.collections.ArrayList;
import mx.containers.Form;
import mx.controls.Alert;
import mx.controls.CalendarLayout;
import mx.core.FlexGlobals;
import mx.core.IVisualElement;
import mx.core.WindowedApplication;
import mx.printing.FlexPrintJob;
import mx.rpc.events.FaultEvent;
import mx.rpc.events.ResultEvent;
import mx.rpc.xml.SimpleXMLEncoder;
import spark.components.Application;
import utilities.FormatUtil;
import utilities.ObjectToXML;
/* public var prefsFile:File; */ // The preferences prefsFile
[Bindable] public var driversXML:XML; // The XML data
public var stream:FileStream; // The FileStream object used to read and write prefsFile data.
public var fileName:String="driversArrayCollection";
public var directory:String = "AceTrackerData";
public var dataFile:File = File.documentsDirectory.resolvePath(directory + "\\" + fileName);
[Bindable]
public var drivers:ArrayCollection=new ArrayCollection();
private var fileStream:FileStream;
[Bindable]
public var calendarDayArray:ArrayCollection = new ArrayCollection;
public var i:int;
[Bindable]
public var weekOneTitle:String;
[Bindable]
public var weekTwoTitle:String;
[Bindable]
public var weekThreeTitle:String;
[Bindable]
public var weekFourTitle:String;
public var day:Object;
protected function readDataFile():void
if(dataFile.exists)
fileStream = new FileStream();
fileStream.open(dataFile, FileMode.READ);
drivers = fileStream.readObject() as ArrayCollection;
fileStream.close();
else
drivers = new ArrayCollection();
var driver:TruckDriver = new TruckDriver("New", "Driver", 000);
drivers.addItem(driver);
saveData(drivers);
buildCalendarArray();
protected function buildCalendarArray():void
calendarDayArray.removeAll();
for (i=0; i<28; i++)
var cd:calendarDay = new calendarDay;
cd.dateOffset= i-7
cd.drivers=drivers;
cd.addEventListener("editDriverEvent",editDriverEvent_Handler);
calendarDayArray.addItem(cd);
private function saveData(obj:Object):void//this is called on the postDriversList result handler to create and write XML data to the file
var fs:FileStream = new FileStream();
fs.open(dataFile, FileMode.WRITE);
/* fs.writeUTFBytes(myXML); */
fs.writeObject(drivers);
fs.close();
protected function driverschedule1_changeDriversHandler(event:ChangeDriversEvent):void
saveData(drivers);
readDataFile();//i read the drivers file again, this refreshes my data, and removes any temporary data that may have been stored in the drivers array
buildCalendarArray();
currentState = 'State1';//this hides the driversdetail window after we've clicked save
/* postDriversList.send(event.driverInfo); */ //this needs to be different
/* Alert.show("TEST"); */
protected function driverschedule1_cancelChangeDriversHandler(event:CancelChangeDriversEvent):void
/* Alert.show("Changes have been canceled."); */
readDataFile();//this re-reads the saved data file so that the changes that were made in the pop up window
// are no longer reflected if you reopen the window
buildCalendarArray();
currentState = 'State1'; //this hides the driversdetail window after we've clicked cancel
protected function buildRowTitles():void
var calendarDay0:Object;
var calendarDay6:Object;
calendarDay0=calendarDayArray.getItemAt(0);
calendarDay6=calendarDayArray.getItemAt(6);
weekOneTitle = calendarDay0.getDayString() + " - " + calendarDay6.getDayString();
weekTwoTitle=calendarDayArray.getItemAt(7).getDayString()+ " - " + calendarDayArray.getItemAt(13).getDayString();
weekThreeTitle=calendarDayArray.getItemAt(14).getDayString()+ " - " + calendarDayArray.getItemAt(20).getDayString();
weekFourTitle=calendarDayArray.getItemAt(21).getDayString()+ " - " + calendarDayArray.getItemAt(27).getDayString();
]]>
</fx:Script>
<s:Group height="100%" width="100%">
<s:layout>
<s:BasicLayout/> <!--This is the outermost layout for the main application MXML-->
</s:layout>
<s:Scroller width="95%" height="100%" >
<s:Group height="100%" width="100%" ><!--this groups the vertically laid out row titles hoizontally with the large group of calendar days and day titles-->
<s:layout>
<s:HorizontalLayout/>
</s:layout>
<s:Group height="95%" width="50" ><!--this is the group of row titles layed out vertically-->
<s:layout>
<s:VerticalLayout paddingLeft="40" paddingTop="35"/>
</s:layout>
<s:Label text="{weekOneTitle}"
rotation="-90"
backgroundColor="#989393"
height="25%" width="115"
fontWeight="normal" fontSize="15"
paddingTop="4" textAlign="center" />
<s:Label text="{weekTwoTitle}"
rotation="-90"
backgroundColor="#989393"
height="25%" width="115"
fontWeight="normal" fontSize="15"
paddingTop="4" textAlign="center" />
<s:Label text="{weekThreeTitle}"
rotation="-90"
backgroundColor="#989393"
height="25%" width="115"
fontWeight="normal" fontSize="15"
paddingTop="4" textAlign="center" />
<s:Label text="{weekFourTitle}"
rotation="-90"
backgroundColor="#989393"
height="25%" width="115"
fontWeight="normal" fontSize="15"
paddingTop="4" textAlign="center" />
</s:Group>
<s:Group height="100%" width="100%" >
<!--this vertically groups together the horizontal day names group and the tile layout datagroup of calendar days-->
<s:layout>
<s:VerticalLayout paddingLeft="5"/>
</s:layout>
<s:Group width="100%" >
<s:layout><!--this group horizontal layout is for the Day names at the top-->
<s:HorizontalLayout paddingTop="10"/>
</s:layout>
<s:Label id="dayNames" text="Sunday" width="16%" fontWeight="bold" fontSize="18" textAlign="center"/>
<s:Label text="Monday" width="16%" fontWeight="bold" fontSize="18" textAlign="center"/>
<s:Label text="Tuesday" width="16%" fontWeight="bold" fontSize="18" textAlign="center"/>
<s:Label text="Wednesday" width="16%" fontWeight="bold" fontSize="18" textAlign="center"/>
<s:Label text="Thursday" width="16%" fontWeight="bold" fontSize="18" textAlign="center"/>
<s:Label text="Friday" width="16%" fontWeight="bold" fontSize="18" textAlign="center"/>
<s:Label text="Saturday" width="16%" fontWeight="bold" fontSize="18" textAlign="center"/>
</s:Group>
<!--<s:SkinnableContainer width="16%">-->
<s:DataGroup id="calendarDataGroup"
dataProvider="{calendarDayArray}"
itemRenderer="{null}" resizeMode="scale"
height="100%" width="100%"
> <!-- I had to use a null renderer because otherwise each instance is added in a group container renderers.DriverScheduleRenderer-->
<s:layout >
<s:TileLayout requestedColumnCount="7" />
</s:layout>
</s:DataGroup>
<!--</s:SkinnableContainer>-->
<!--<mx:FormItem label="Today's Date:">
<s:TextInput id="dateToday"
text="{myDateFormatter.format(testDate)}"/>
</mx:FormItem>-->
<!--<components:DriverSchedule drivers="{drivers}"
changeDriversEvent="driverschedule1_changeDriversHandler(event)"/>-->
<s:HGroup> <!--this groups together my drivers button and my print button at the bottom of the calendar-->
<s:Button id="showDriverDetailButton"
label="Driver List"
click="currentState = 'driverDetailState'">
<!--</s:Button>
<s:Button id="printButton"
label="Print"
> click="printButton_clickHandler(event)"-->
</s:Button>
</s:HGroup> <!--this is the end of the small hgroup which pairs my drivers button with the print button-->
</s:Group><!--this ends the vertical grouping of the day names and the tile layout calendar-->
</s:Group> <!--this ends the horizontal grouping of the calendar (names and days) with the week labels at the left-->
</s:Scroller>
<s:SkinnableContainer includeIn="driverDetailState"
width="95%" height="95%" horizontalCenter="0" verticalCenter="0"
backgroundColor="#989898" backgroundAlpha="0.51">
<s:BorderContainer horizontalCenter="0" verticalCenter="0">
<components:DriverSchedule id="driverSchedule"
drivers="{drivers}"
changeDriversEvent="driverschedule1_changeDriversHandler(event)"
cancelChangeDriversEvent="driverschedule1_cancelChangeDriversHandler(event)"
/>
</s:BorderContainer>
</s:SkinnableContainer>
</s:Group> <!--end of basic layout group-->
</s:WindowedApplication>
</code>
calendarDay.mxml code:
<code>
<?xml version="1.0" encoding="utf-8"?>
<s:Group xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
creationComplete="initDay()"
width="100%"> <!--width="16%" height="25%" width="160" height="112"-->
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
<mx:DateFormatter id="myDateFormatter"
formatString="MMM D"/>
</fx:Declarations>
<fx:Metadata>
[Event(name = "editDriverEvent", type="events.EditDriverEvent")]
</fx:Metadata>
<fx:Script>
<![CDATA[
import components.CalendarDay;
import components.DriverDetailComponent;
import events.EditDriverEvent;
import mx.collections.ArrayCollection;
import mx.collections.ArrayList;
import mx.controls.CalendarLayout;
import mx.controls.DateField;
[Bindable]
public var todayCollection:ArrayCollection = new ArrayCollection;
[Bindable]
public var todayList:ArrayList=new ArrayList; //arraylist created as data provider for dataGroup, this is where all drivers with an arrival date of today are added
[Bindable]
public var currDate:Date =new Date; //this will be used to contain the current real world date
[Bindable]
public var calDate:Date = new Date; //this is used below to determine the date of the calender day that is being created
[Bindable]
public var todaysDate:CalendarDay;
[Bindable]
public var currDay:int;
[Bindable]
public var dateOffset:int;
public var drivers:ArrayCollection= new ArrayCollection();
public var driver:Object;
public var rowLabel:String;
public function initDay():void
todaysDate = new CalendarDay(currDate, currDate.day, dateOffset)//currDate represents the day the operating system says today is
currDay=todaysDate.returnDate().getDate();//currDay is an int representing the day of the month
calDate=todaysDate.returnDate();//calDate represents the actual date on the calendar (MM-DD-YYY) that is currently being evaluated
/* if (currDay ==currDate.getDate()) //i want to highlight the day if it is in fact today
cont.styleName="Today";
if (calDate.getDate() == currDate.getDate())
calDayBorder.setStyle("backgroundColor", "#FFFF00");
else
calDayBorder.setStyle("backgroundColor", "#EEEEEE");
addDrivers();
return;
public function addDrivers():void
var count:int = 0;
/*var driverDetail:DriverDetailComponent;
var driver = */
for each (driver in drivers)
{//i check the date value based on data entry of mm-dd-yy format against the calculated date for the day
//the calender is building and if it is equal the drivers information is added to this day of the calendar
if (DateField.stringToDate(driver.arrivalDate,"MM/DD/YYYY").getDate() == calDate.getDate())
var driverDetail:DriverDetailComponent = new DriverDetailComponent; //i create a new visual component that adds the id and destination to the calendar day
driverDetail.driverid = drivers[count].id; //i feed the id property which is the truck# - firstName
driverDetail.driverToLoc=drivers[count].toLoc; //i feed the toLoc which is the current destination of the driver
driverDetail.driverArrayLocation=count; //here i feed the location of this driver in the "drivers" array so i know where it's at for the click listener
todayList.addItem(driverDetail);
//this concatenates the drivers truck number first name and destination to display in the calendar day
/* todayList.addItem(driver.truckNumber + " - " + driver.firstName + " - " + driver.toLoc); */
count ++;
public function getDayString():String
rowLabel =myDateFormatter.format(calDate);
return rowLabel;
]]>
</fx:Script>
<s:BorderContainer id="calDayBorder" width="160" styleName="Today" cornerRadius="2" dropShadowVisible="true" height="100%">
<s:layout>
<s:BasicLayout/>
</s:layout>
<!--I need to make a custom item renderer for my calendar days that limits the height and width of the day, and also puts the items
closer together so i can fit maybe 5 drivers on a single day-->
<s:DataGroup dataProvider="{todayList}"
itemRenderer="spark.skins.spark.DefaultComplexItemRenderer"
bottom="-2"
width="115" left="2"> <!--width="94%" width="100" width="16%"-->
<s:layout >
<s:VerticalLayout gap="-4"/> <!--The reduced gap pushes the drivers together if there are serveral on one day. This helps cleanly show several drivers on one day-->
</s:layout>
</s:DataGroup >
<s:Label text="{currDay}" right="3" top="2" fontSize="14" fontWeight="bold"/>
</s:BorderContainer>
</s:Group>
</code>
DriverDetailComponent code:
<code><?xml version="1.0" encoding="utf-8"?>
<s:Group xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx">
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<fx:Metadata>
[Event(name = "editDriverEvent", type="events.EditDriverEvent")]
</fx:Metadata>
<fx:Script>
<![CDATA[
import events.EditDriverEvent;
import mx.controls.Alert;
[Bindable]
public var driverid:String;
[Bindable]
public var driverArrayLocation:int;
[Bindable]
public var driverToLoc:String;
protected function label1_doubleClickHandler(event:MouseEvent):void
Alert.show("You have selected " +driverid +" at location " + driverArrayLocation.toString() +" in the drivers ArrayCollection.");
var eventObject:EditDriverEvent = new EditDriverEvent("editDriverEvent",driverArrayLocation);
dispatchEvent(eventObject);
]]>
</fx:Script>
<s:Label id="driverDetailLabel" text="{driverid} - {driverToLoc}" doubleClick="label1_doubleClickHandler(event)" doubleClickEnabled="true"/>
</s:Group>
</code>lkb3 wrote:
I'm trying to add a listener to [this JOptionPane pane dialog box|http://beidlers.net/photos/d/516-1/search_screenshot.JPG|my dialog box], so that when it pops up, the cursor is in the text box, but then if the user clicks a button other than the default, the cursor reverts back into the text box.
The code I have is this:
// BUILD DIALOG BOX
JLabel option_label = new JLabel("Select a search option:");
// Create the button objects
JRadioButton b1 = new JRadioButton("Search PARTS by name");
JRadioButton b2 = new JRadioButton("Search ASSEMBLIES by name");
JRadioButton b3 = new JRadioButton("Search DRAWINGS by name");
JRadioButton b4 = new JRadioButton("Search all by DESCRIPTION");
b1.setSelected(true);
// Tie them together in a group
ButtonGroup group = new ButtonGroup();
group.add(b1);
group.add(b2);
group.add(b3);
group.add(b4);
// Add them to a panel stacking vertically
JPanel panel = new JPanel();
panel.setLayout(new BoxLayout(panel,BoxLayout.Y_AXIS));
panel.add(b1);
panel.add(b2);
panel.add(b3);
panel.add(b4);
JLabel name_label = new JLabel("Enter a search term (add *'s as required)");
JTextField name = new JTextField(30);
name.addComponentListener(new ComponentListener() {
public void componentHidden(ComponentEvent ce) { }
public void componentMoved(ComponentEvent ce) { }
public void componentResized(ComponentEvent ce) {
ce.getComponent().requestFocus();
public void componentShown(ComponentEvent ce) { }
Object[] array = { option_label, panel, name_label, name };
// GET INPUT FROM USER
int res = JOptionPane.showConfirmDialog(null, array, "Select", JOptionPane.OK_CANCEL_OPTION);
String searchTerm = name.getText();This sucessfully has the focus in the text box when opened; is there a way to get the focus to go back into the text box after the user clicks a radio button?
Thanks!
[this JOptionPane pane dialog box|http://beidlers.net/photos/d/516-1/search_screenshot.JPG|dialog Joption]
you will need to add ItemListener to the JRadioButtons
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