i got a class(class1) that extends another class (class2)...when something happens in super class, i need to update the class1, soi need to trigger a function in class1 from class2... I know is bad programming, but is that possible? I'm confused
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Is it possible to call a method in the super class of a super class? I tried the above and it doesn't work, unsurprisingly. Only way I've been able to do it is to store a reference to a super.someMethod in the super Class (eg. var superMethod: Function = super.someMethod) and call that instead. Seems reasonable and it works but wonder if there is an in-built method for doing this?
View 6 RepliesIf I have three classes:
public class Example {
public function Example () {
}[code]............
You can see that the two last classes extend the first one, and both have the 'variable' property. In case that I have an instance of Example and I am sure it is also an ExtendedExample OR AnotherExtendedExample instance, is there some way to access the 'variable' property? Something like
function functionThatReceivesAnExtendedExample (ex:Example):void {
if(some condition that I may need) {
ex.func()
I am trying to create a spark datagrid item renderer. This item renderer extends a checkbox, and implements IGridItemRenderer public class CellCheckBoxItemRenderer extends CheckBox implements IGridItemRenderer
When I implement IGridItemRenderer, I need to implement the interface methods, I am having a problem with the following methods:
[Code]...
mainClass.as
package {
import mfClass.CarSelector;
import flash.display.MovieClip;
import flash.events.Event;
public class MainClass extends MovieClip {
[Code] .....
Now, when I run this in flash. I get this message.. in output.
TypeError: Error #1006: sel_Fun is not a function.
at MainClass/show_selector()
at MainClass()
I am working on a Flex Front End at the moment, and have been using the Parsley framework for passing messages/events around.
I was wondering if there is a simple way for a function (in this case, an event's constructor) to obtain a reference to the object which called it?
This is to ensure that a certain event that I am defining can only be dispatched by one specified class. My thinking is to check the caller of the constructor somehow, and throw an error if it is not of the correct type.
I'm not really asking how. What I'm asking is, is it possible? And I ask because I thought it was not - certainly it didn't work in AS2 - and yet that's what I appear to have done. Am I going crazy? Structure: A SWF (#1) with a class NewActivity that extends class AActivity. Another SWF (#2) with a shared library of code in it, including AActivity. A third SWF (#3) which loads the library followed by SWF#1. Here's what happened: I didn't expect AActivity to be able to be shared. I mean, it should be compiled no matter what in SWF#1, as SWF#1 includes a class that extends AActivity. I had added some properties to the AActivity class, ran the project, and when SWF#3 tried to set those properties I was told they couldn't be applied. "Of course", I said, "I need to recompile SWF#1, because the code is now out of date. The version of the class there doesn't include these new properties.".
However, that didn't work. I got the same problem. Maybe, I thought, there's a definition conflict between SWF#1 and the library, so I removed the AActivity class from the shared library in SWF#2 for the time being. Only SWF#1 uses it, and it should already be compiled into SWF#1 as, like I said, it is extended by another class there. But when I ran the project, I was then told that the AActivity class could not be found at all! Looking at SWF#1 in a decompiler, there is in fact no mention of AActivity (I had up to this point assumed it was implied). So this left just one option: I needed to recompile the library in the first place, not SWF#1. I added AActivity back to the library, recompiled, and it worked.
To check I wasn't going crazy: I added a test property to the AActivity class and recompiled the library. The containing project - SWF#3 - then set this property on SWF#1, which had NOT been recompiled, and then read it back out. No errors. I should point out that the getting/setting of this property is done through an IActivity interface - AActivity is not being accidentally compiled into the main project (SWF#3), and the decompiler indicates this also. Am I going nuts? I really didn't think having a runtime shared super class was possible in any way. If it is, that opens up a whole new world of awesome, even though I've created this project on the basis of that being impossible.
i have recently started a project that would require writing a set of classes and a small API.i know some basics of inheritance and extending classes but i still have some questions.
1) how should sub-class refer/communicate with super class.i think that dispatching events is the way to go but i have no experience on that. i have previously done it by having a parent set up a reference to itself in a subclass e.g
ParentClass.addChild(SubClass);
SubClass.myParent = ParentClass;
//i know that there is already a "parent" keyword in flash objects if i extend one but is that a decent way to communicate with super class
e.g SubClass.myParent.removeChild(this);//sounds a bad call
//but is it better if i dispatched an event that calls the removeChild() in the parent.i have is about dispatching events in a class that is likely going to be extended.
ActionScript Code:
public class Button
{
//add event listeners[code]....
//now if i extend the Button class into another class, let say ControllerButton and want that button to dispatch different event. e.g ControllerEvent, i am forced to override and rewrite all the common stuff in the handler functions.how to avoid having to override allot of common stuff.
I'm trying to make a CustomLoader class that extends another class.In the contructor of my CustomLoader, i need to call super(myLoader:Loader) where myLoader is a Loader object. Problem is I need to listen to the complete event of the loader before passing it or i'll get an "Error #1009: Cannot access a property or method of a null object reference". but if i put super() in a handler function i get an "Error 1007: A super statement can be used only inside class instance constructors."
Here's part of my code:
Code:
public class CustomLoader extends ParentClass
{
...
public function CustomLoader():void
[code]...
Say I have a class B that extends class A.In class A, I have a variable that I've declared to be a function, which gets defined in the constructor. Now, in class B, is there any way to reference that function with the use of super.functionName()?
View 1 RepliesDo all variables and functions in super class, that I want to access from a sub class need to be set as public?
View 2 RepliesI am hoping someone can explain about subclasses accessing variables from the super class. I found that the subclass can only access variables which are set in the constructor of the super class. Is there any way around this?
[Code]...
I have the following scenario:i have a MovieClip and I created a linkage for it named A.
[code]...
what is allowed? how can I resolve the issue ? update ok this is an exact scenario but a more simple one that I still wasn't able to resolve. The original scenario is that I have a MovieClip called user_bg_me that has a linkage named user_bg_me that extends user_bg_genericthat extends 'MovieClip` inside user_bg_generic class i want to be able to modify elements inside the movie clip itself. using super.element_name provides an error that the property isn't found.
I got something just like that:
[code]...
I dont know if that is normal, but this code create an infinite loop, because when i create a new instance of class Two, because of the extends, the class One constructor is called again, and creating a new instance of class Two, and so on...I know how can i get this fixed, but, what i want to know is, this is correct? Its a Flash bug? Isnt that way in AS3?
How can I apply a TextFormat to a TextField instance in a super class?
Code:
// This doesn't seem to work:
var textFormat:TextFormat = new TextFormat();
textFormat.size = 24;
super.alertText.setTextFormat(textFormat);
I am trying to extend the new AutoComplete component from Adobe. In two different places I need to bypass the AutoComplete methods and get right at the ComboBox methods.
I was told that super.super.someMethod() works just like it does in Java. But I keep getting Compiler errors:1084: Syntax error: expecting identifier before super.Any suggestions other than just cutting and pasting the code and extending the AutoComplete superClass?
Say i have these two classes:
MAIN.as
package
{
import flash.display.*; import mx.core.*;
import flash.events.*; import mx.collections.*;
[Code]...
Now how is it that I can add the variable SPRITE which is a Sprite in the OBJECT_square class to the display list of MAIN class? I've tried addChild(SPRITE) and super.addChild(SPRITE). If everything works I should see a red square somewhere on the screen but right now its all blank, except for the text drawn in the MAIN class.
Basically I want it so i can just make a new OBJECT_square and it will draw itself without any more instructions from the MAIN class.
In Flex, lets say I have a super-class... something like:
class SuperComponent extends DragStack {
private var _childReference:UIComponent;
public function SuperComponent() {
// ???
addEventListener(FlexEvent.CREATION_COMPLETE, onCreationComplete);
} private function onCreationComplete(e:FlexEvent):void {
//The 'this[]' technique doesn't seem to work and causes run-time errors:
//trace("Component found: " + this["myButton"]);
}}
And then I make use of the following derived-class in my application (just a mockup MXML as an example):
<!-- Component ChildComponent.mxml -->
<mx:SuperComponent>
<mx:Button id="myButton" label="Press Me!" />
</mx:SuperComponent>
How do I go about verifying the presence of "myButton" from the SuperComponent class, and referencing it? Do I need to use getChildByName( ... ) ?
I always don't call super() when I extends Sprite.But doesn't not calling super() cause any problem?Till now, I don't have any problem and I have never seen code which call super() in constructor which class extends Sprite. How about TextField? I don't have any problem about TextField, too. How to know whether I should call super() or not?
View 3 RepliesLets say I have the following inheritance hierarchy:
Code:
Select allpackage {
public class ClassA {
protected function foo():void {
// do something
}}} package {
public class ClassB extends ClassA {
[Code] .....
Now this is all well and good, as the call to ClassC.foo() will propogate through the inheritance chain; C > B > A. But what if I want ClassC.foo() to call foo() that is in ClassA and bypass the method call in ClassB? I have tried the following:
* Cast the method to the super-class type I want to execute, but this does not work as intended.
Code: Select all...
override protected function foo():void {
// do something related to Class C
// call ClassA.foo
ClassA(this).foo();
}
I'm trying access a static variable located of a super class through an instance of one of it's subclasses and I'm receiving an access of undefined property error (example of which below). Creating another static variable in the subclass and assigning the value from the super class will allow me to dot operate to it.
[Code]....
Use Flash CS5 (and AIR, though this does not seem like it would be AIR related) in Win XP 64 I have a MovieClip symbol in my library with the identifier 'Puzzle10Piece10' with the following actionscript attached to frame 1 of the only layer with the following actionscript:
[Code]...
This runs contrary to my understanding of the pre-compiler and code execution order. In my way of thinking, any reference creation and related memory allocation is made when the object is instantiated, and indeed that allocation, unlike C depends not on code order (declaration before use), though this is an order that would satisfy even the C pre-compiler. If I understand the Flash compiler at all, it's not even a question of 'code order'... the symbol is pre-compiled such that for it to exist... for it to be instantiated, the variable would exist before the function would even be 'available' to be called internally or externally. Is my thinking way off, or is this a bug?
I have an AS3 program that calls a function multiple times. The function must return multiple variables, so I created a class for the function to declare an object containing all of these variables. For example, here's my class:
package
{
public class PER
{
[Code].....
Let's say the calling program calls the function, which returns the variables into data_set1 (where data_set1 depends on input variables arg1, arg2, arg3) using:
var data_set1:PER = function_name(arg1, arg2, arg3);
The calling program does some stuff, then calls the function again, but returns the variables into a new variable name, data_set2:
var data_set2:PER = function_name(arg4, arg5, arg6);
My intention is that data_set1 and data_set2 are different (e.g. not linked together).
My question is, given that arrays are passed by reference, will data_set1 be modified to agree with data_set2 upon the 2nd function call? Why or why not?
i) Create a symbol called SimpleSquare. This should consist of a simple red square graphic
ii) Create a class file to define a class called SimpleSquare. This should be linked to the SimpleSquare symbol. SimpleSquare ashould have the following functionality: When the instance is placed on the Stage, it should start to disappear by decreasing its alpha at 0.01 in every frame (hint: alpha)
I'm using an AMF service that was built by someone else. Basically what happens is that some info is passed to the AMF service and it returns true or false.I want to be able to pass in various info to the a function that calls the AMF service(submitTracking) and then get the true or false value returned in onResultSubmit to be passed back to submitTracking.
var screen:String;
var buttonnumber:String;
function submitTracking(screen:String, buttonnumber:String) {
[code]....
I have an FLA in which there are a number of MovieClips in its library. I also have a document class for this FLA, which I will refer to as Body.as from here out.From Body.as, I call other classes designed to put stuff together and allow for organization due to large amount of MCs I have to use in the FLA. For reference, these classes are called as such: Head.as, Chest.as, Arms.as, etc etc.Now, where Body.as is the document class, and is therefore functioning to operate all areas in the FLA, I wanted to use these additional class files to be used to manage anything related to them, including any MCs I have. I'll use Head.as for explaining. To that end, I have four MCs, each named as follows:hat1hat2hathat4s part of trying to organize it all, I want to be able to call a singular function in Head.as that will retrieve these MovieClips and add them to the stage (Or, as I hope to do once I get a bit further in, add them to a larger MC that will then be added to the stage).
View 9 RepliesI've been banging my head against the wall with this one. I have the following set function in Flex. [code]If I set the periodChangeAmount to -1 or 1 the set method gets fired. If I set it to zero it doesn't get fired. What's the deal? Does anyone know why it wouldn't get called when setting it to zero. If I change the object type to a number or even an object it still doesn't work as expected.
View 2 RepliesI have this script for random letter cycling below. I want to call this function to happen at a certain click or frame label, but when I call it with tweenmax, I get a runtime error. Can anyone explain to me how to call this function at certain events. I know this is definitely not best practice but have to try somewhere and here is what I did:
var targetWord:String = 'home';
var wordSoFar:String = '';[code]....
I am loading one xml file and onload (or onData) of this file I am calling another function but, this function is not getting called. What can be the issue? Can delegates be used here and how?
Here is the code for reference
Code:
//path for _global.bookXML is defined already.
_global.book_xml = new XML();
_global.book_xml.ignoreWhite = true;
[Code]....
The code that is commented out will work, however, I'm trying to turn that code, since it's used multiple times, into a function.
Why isn't my function working when it's being called?
ActionScript Code:
function displayInfo(_ROLL:MovieClip,_MC:MovieClip, _NN:MovieClip) {
_ROLL.onRollOver = function() {
[Code]......
