How can I get the data from this function using AS3? Or at least how to properly convert it to AS3?
Original AS-2 Class A was :
mc.btn.onRollOut = function(data)
{
dispatchEvent({type: "itemRollOut", target: _parent.data});
itemRollOut(data);
}
public function itemRollOut(data)
{
}
So I tried to convert it like this below : new AS-3 Class A
mc.btn.addEventListener(MouseEvent.MOUSE_OUT, btnonRollOut);
function btn.btnonRollOut(evt:MouseEvent)
{
itemRollOut(data);
}
public function itemRollOut(data)
{
// here returns the data in the other class -- > mc.itemRollOut = function(data:Object)
}
This Class B shown below calls the data from the itemRollOut in Class A:
mc.itemRollOut = function(data:Object)
{
trace(data + " : " + data.data);
}
What I'm trying to achieve :
When I itemRollOut my button, I want to pass the data from the result that Class A gives into Class B.
Thanks In Advance.
Are you asking you to define a function such as;
private function getSquare(nbr:Number):Number
{
return nbr * nbr;
}
which when called like;
var nbrOutvalue:Number = getSquare(20);
will return 400?
If so the answer is the :Number at the end of the function definition line, which is the data type of the value to return.
Related
I have a simple NumericStepper which looks like this:
<mx:NumericStepper id="nsPort"
minimum="0"
maximum="65535"
stepSize="1"
value="{PORT_DEFAULT}"/>
I wrote a Validator for it (which doesn't work as I expect):
<mx:NumberValidator
required="true"
source="{nsPort}"
property="value"/>
However, every time I don't enter anything into NumericStepper it passes zero, not NULL or something else, which is...well...a valid value. I suspect that this is done on purpose. So, how can I make blank value at NumbericStepper to be invalid?
Please note that I'm restricted to a ver.3 of Action Script.
Example code base from https://flexscript.wordpress.com/2008/09/22/flex-creating-custom-validators/ with a little modification:
package flexScript
{
import mx.validators.ValidationResult;
import mx.validators.Validator;
//Class should extend mx.validators.Validator
public class NumericStepperValidator extends Validator {
public function NumericStepperValidator() {
// Call base class constructor.
super();
}
// Class should override the doValidation() method.
//doValidation method should accept an Object type parameter
override protected function doValidation(value:Object):Array {
// create an array to return.
var ValidatorResults:Array = new Array();
// Call base class doValidation().
ValidatorResults = super.doValidation(value);
// Return if there are errors.
if (ValidatorResults.length > 0)
return ValidatorResults;
if (String(value).length == 0)
return ValidatorResults;
if ( value == 0)//as your required.
return ValidatorResults;
var RegPattern:RegExp = /\b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b/; //Change to your customize regExpression
var a:Array = RegPattern.exec(String(value));
if (a == null)
{
ValidatorResults.push(new ValidationResult(true, null, "NumbericStepper Error","You must enter an Number"));
return ValidatorResults;
}
return ValidatorResults;
}
}
}
<flexScript:NumbericStepperValidator source="{{nsPort}}" property="number"/>
how to pass a values dynamically to an Marionette.CompositeView during run time? like in java we create a method like the following
package com.test.poc;
public class SampleMethod {
public int add(int a, int b) {
return a + b;
}
public static void main(String[] args) {
SampleMethod method = new SampleMethod();
int firstValue = 90, secondValue = 90;
System.out.println("add : " + method.add(firstValue, secondValue));
}
}
the above is the simple java code anybody can understand like the above how to create and pass arguments to Marionette.CompositeView and work on them?
Best Regards
at the moment you instanciate a view, you can pass whatever arguments you want. normally you pass the model and the collection to be rendered in the compositeView, but you can pass more data if you need.
var MyCompositeView = Backbone.Mationette.CompositeView.extend({
initialize : function (options){
this.dataValue = options.dataValue1;
this.helperObject = options.helperObject;
this.useValues();
},
useValues: function () {
console.log(this.dataValue);
}
});
var helperObject = {
value3 : "I have a value",
value4 : "I dont!"
}; /// a js object literal
var myModel = new MyModel();
var myCollection = new MyCollection();
var myCompositeView = new MyCompositeView({model:myModel,
collection:myCollection,
helperObject:helperObject,
dataValue1:"Hi there"});
notice that Im passing 4 values in the at the time to intanciate the view, and Im reading just two of them, the model and the collection will be handled by marionette, but the other two you can read them in your initialize function.
hope that helps.
this is from Adobe docs:
package {
import flash.display.Sprite;
public class Array_filter extends Sprite {
public function Array_filter() {
var employees:Array = new Array();
employees.push({name:"Employee 1", manager:false});
employees.push({name:"Employee 2", manager:true});
employees.push({name:"Employee 3", manager:false});
trace("Employees:");
employees.forEach(traceEmployee);
var managers:Array = employees.filter(isManager);
trace("Managers:");
managers.forEach(traceEmployee);
}
private function isManager(element:*, index:int, arr:Array):Boolean {
return (element.manager == true);
}
private function traceEmployee(element:*, index:int, arr:Array):void {
trace("\t" + element.name + ((element.manager) ? " (manager)" : ""));
}
}
}
The problem is the Array class filter method. It works this way: you pass a function as an argument of filter and an array is returned based on the function you pass. The problem is that it seems you can't add any other parameter. So, if you must create (for example inside a for loop) 4 arrays from the same array and you want to use the same function, you can only test against a property of the class you must previously set to the value you want to test.
Is there any other way to add that parameter?
When filtering by a variable object properties in an array, I wrapped the filtering into another function:
protected function FilterByProperty(input_array:Array, extra_testing:Object):Array
{
function FilterFunction(element:Object, index:int, array:Array):Boolean
{
return element.property == extra_testing; // Arbitrary test
}
return input_array.filter(FilterFunction);
}
var filtered_array:Array = FilterByProperty(unfiltered_array, test_property);
You can use second parameter of filter() method to pass data to filter function. It will be avaliable as "this" variable. To do that first parameter must be a closure, not a class method.
var array:Array = [...];
var params:Object = {"param1": value1, "param2": value2};
var filterFunction:Function = function(item:*, index:int, array:Array):Boolean {
var param1 = this["param1"];
var param2 = this["param2"];
};
array.filter(filterFunction, params);
You want to use something like Delegates or function binding, or closures. Depending on your coding and terminology preferences. The idea behind all of them is that you create a dynamic function wrapper for the core "filter" function. That wrapper will have access to extra parameters that you pass. So, the first time you call it, you might go:
a.filter(Delegate.create(myFunc, param1));
and the next time:
a.filter(Delegate.create(myFunc, param2));
and you function would have something like this:
private function myFunc(item:*, index:Number, a:Array, param:Object=null):Boolean{}
A quick an dirty method is to just pass an inline function like this:
a.filter(
function(item:*, index:Number, a:Array):Boolean {
return myFunc(item,index,a,param1);
}
);
where param1 is passed using the closure created by the function definition.
I am trying to understand the way the AsyncToken works in actionscript. How can I call a remote service and ensure that a specific parameter is available in the result or fault event functions? I think it is the async functionality I want to use.
The following code will hopefully explain what I am trying to do. Feel free to modify the code block as your explanation.
Thanks.
public function testSerivceCall(data:Object, callBackCommand:String):void
{
// Assume callBackCommand == "FOO";
// How can I pass in callBackCommand as a parameter to the result or fault events?
// How do I create an async token here?
var remoteObject:RemoteObject;
remoteObject = new RemoteObject();
remoteObject.destination = "zend";
remoteObject.source = "MyService";
remoteObject.endpoint = "http://example.com/service";
remoteObject.test.addEventListener(ResultEvent.RESULT, _handleTestResult);
remoteObject.test.addEventListener(FaultEvent.FAULT, _handleTestFault);
remoteObject.test(data);
}
private function _handleTestResult( event:ResultEvent ) : void
{
// How do I get the async token value?
// How can I get the value of callBackCommand in this code block?
if (callBackCommand == "FOO")
{
// do something related to "FOO"
}
else
{
// do something else with the result event
}
}
private function _handleTestFault( event:FaultEvent ) : void
{
// How do I get the async token value?
// How can I get the value of callBackCommand in this code block?
}
An edit to make this question more clear:
Assume I make the following method call somewhere in my code:
testSerivceCall(personObject, "LoginCommand");
How do I get access to the actual string "LoginCommand" inside the _handleTestResult function block?
The reason I want to do this is because I want to dynamically call back certain functions and hand off the result data to specific commands that I know ahead of time when I am making the service call.
I am just having a time grokking the AsyncToken syntax and functionality.
I did not even need closures. I added a class as below which I called externally.
The call was like this:
public class MyClass
{
...
var adminServerRO:AdminServerRO = new AdminServerRO();
adminServerRO.testSerivceCall("FOO",cptyId);
}
public class AdminServerRO
{
private function extResult( event:ResultEvent, token:Object ) : void
{
//the token is now accessed from the paremeter
var tmp:String = "in here";
}
private function extFault( event:FaultEvent ) : void
{
var tmp:String = "in here";
}
public function testSerivceCall(callBackCommand:String, cptyId:String):void
{
var remoteObject:RemoteObject = new RemoteObject();
remoteObject.destination = "adminServer";
var token:AsyncToken = remoteObject.getCounterpartyLimitMonitorItemNode(cptyId);
token.addResponder(new AsyncResponder(extResult,extFault,cptyId));
}
}
While the accepted answer will accomplish what the original submitter wants it does not actually answer the question which was asked. An AsyncToken is created as a result of a remote method call and is accessible from the ResultEvent. Since AsyncToken is a dynamic class you can add whatever property to it that you want. The code below should demonstrate this:
public function testSerivceCall(data:Object, callBackCommand:String):void
{
var remoteObject:RemoteObject;
remoteObject = new RemoteObject();
remoteObject.destination = "zend";
remoteObject.source = "MyService";
remoteObject.endpoint = "http://example.com/service";
remoteObject.test.addEventListener(ResultEvent.RESULT, _handleTestResult);
remoteObject.test.addEventListener(FaultEvent.FAULT, _handleTestFault);
var token:AsyncToken = remoteObject.test(data);
token.callBackCommand = callBackCommand;
}
private function _handleTestResult( event:ResultEvent ) : void
{
if (event.token.callBackCommand == "FOO")
{
// do something related to "FOO"
}
else
{
// do something else with the result event
}
}
private function _handleTestFault( event:FaultEvent ) : void
{
//event.token.callBackCommand should be populated here too
}
If you want to access the properties used during the remote call (parameters to the call and/or AsycToken), you can make use of closures. Just define the result event handler inside the calling method as a closure. It can then access any variable in the calling function.
public function testSerivceCall(data:Object, callBackCommand:String):void
{
var _handleTestResult:Function = function( event:ResultEvent ) : void
{
// token is visible here now
if (callBackCommand == "FOO")
{
// do something related to "FOO"
}
else
{
// do something else with the result event
}
}
var remoteObject:RemoteObject;
remoteObject = new RemoteObject();
remoteObject.destination = "zend";
remoteObject.source = "MyService";
remoteObject.endpoint = "http://example.com/service";
remoteObject.test.addEventListener(ResultEvent.RESULT, _handleTestResult);
remoteObject.test.addEventListener(FaultEvent.FAULT, _handleTestFault);
var token = remoteObject.test(data);
}
If I'm reading your question correctly, you're trying to figure out how to access the actual data returned by the ResultEvent ?
If so, assuming you've made the call correctly and you've gotten data back in a format you're expecting:
private function _handleTestResult( event:ResultEvent ) : void
{
// you get the result from the result property on the event object
// edit: assuming the class Person exists with a property called name
// which has the value "John"
var person : Person = event.result as Person;
if (person.name == "John")
{
Alert.show("John: " + person.name);
}
else
{
Alert.show("Not John: " + person.name);
}
}
private function _handleTestFault( event:FaultEvent ) : void
{
// Maybe you know the type of the returned fault
var expectedFault : Object = event.fault as MyPredefinedType
if (expectedFault.myPredefinedTypesPredefinedMethod() == "BAR")
{
// something here
}
}
The ResultEvent has a property called result which will hold an instance of the object returned by the result (it might be the output of an XML file if using a web service, or a serialized object if using AMF, for example). This is what you want to access. Similarly, FaultEvent has a fault property that returns the fault information.
Edit: Changed code in _handleTestResult() in response to Gordon Potter's comment.
I'm developing a flash (Flash 9, AS3) to connect to a server and send/receive/parse data to a chat on JavaScript/HTML.
I have a structure like this:
package {
public class myClass {
String.prototype.escapeHtml = function() {
var str = this.replace(/&/g, "&");
str = str.replace(/</g, "<");
str = str.replace(/>/g, ">");
return str;
}
function writeToBrowser(str:String) {
ExternalInterface.call("textWrite",str.escapeHtml());
}
}
}
When I compile it, I get this error:
1061: Call to a possibly undefined
method escapeHtml through a reference
with static type String.
If I remove the :String, it all works fine, but then I'd have to check if str is a String and if it's not undefined and so on.
I have many functions like this on my code, many of them receive user-entered data, so I think that removing the :String and doing many checks on every function isn't the best approach.
How can I make this right?
Then just define the function:
public function escapeHtml( str : String ) : String
{
var str = this.replace(/&/g, "&");
str = str.replace(/</g, "<");
str = str.replace(/>/g, ">");
return str;
}
in your class.
And call it:
public function writeToBrowser( str : String )
{
ExternalInterface.call( "textWrite", escapeHtml( str ) );
}
:)
you get an error because the compiler is in strict mode.
if you want to stay in strict mode you can try this:
ExternalInterface.call("textWrite",str["escapeHtml"]() );
Prototype is actually legacy.
You should extend the String class and use your custom class
package {
public class myClass {
public function writeToBrowser(str:CustomString) {
ExternalInterface.call("textWrite",str.escapeHtml());
}
}
public class CustomString {
public function escapeHtml():String {
var str = this.replace(/&/g, "&");
str = str.replace(/</g, "<");
str = str.replace(/>/g, ">");
return str;
}
}
}