Actionscript 3 :: Calling Super() From Constructor With Varargs
Feb 9, 2010
If a constructor takes its parameters as a vararg (...) it seems to be impossible to create a subclass that will just pass on that vararg to the superclass.
There is a related question with fix for this same situation for normal functions: Wrapping a Vararg Method in ActionScipt but I cannot get that to work with a super call.
base class:
public class Bla
{
public function Bla(...rest)
{
[Code]....
Aside from actually moving the handling of the parameters to the subclass or shifting it off to a separate initializer method
I'm having a problem using superclass constructor with arguments. I've searched all over for the solution and found some really useful advice. Problem is i;ve followed it and it doesn't work... not for me anyway. So i've learned that you need to callthe super constructor in the subclass' constructor to avoid this error. problem is, this code still gets the same error....
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?
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?
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?
I have a library object (SomethingMC) which extends a custom class (Something). Something, in turn, extends MovieClip.If adding SomethingMC to the stage within Flash CS3 IDE, is it possible for it's super class (Something) to assign an instance name from a class constant (Something.THE_CONSTANT)?
The above does not work. It throws Error #2078: The name property of a Timeline-placed object cannot be modified. if the instance is assigned a name in the IDE, and it just doesn't work if no name is assigned in the IDE.
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:
what i am trying to do is by pressing zero_btn which is an object in the library to print a number in the dynamic text box ( result_txt ) which is also an existing object in the library and on stage. my knowledge in actionscript is not much and messing with .as files is totally new to me! then thing is that this code when i locate into to .fla file works fine. there is no error with the code i posted, but am sure something is missing ... like calling the constructor of the .as file.In the library the name of it is Zero_btn and the instance name of this object is zero_btn and it is a button.[code]
In my subclass, I call "super()" after setting an object's data. Whenever you set the object's data, "super()" sets it back to null. Meanwhile, if I define arrays before "super()", they do not get reset.
I am new to AS3 but not to AS2. I have written a simple class and when I import it, I don't see the object that should be created upon calling the constructor. Can you guys tell me where am I going wrong. And I am very puzzled about 'document class'. Yes, I have google numerous threads on "document class" but still very shaky on this matter. Here is my simple class which should place a button object on the stage when I create a new object of this class. Once I have created the BTN class, I have made sure that I have button component in my library, I then instantiate the object by creating a new CS3 file and importing my class: import com.learning.as3.*; var b:BTN = new BTN();
When I test the movie, I get the following errors: 1172: Definition com.learning.as3 could not be found. 1046: Type was not found or was not a compile-time constant: BTN. 1180: Call to a possibly undefined method BTN.
is it possible to get the name of a calling function or the constructor from the called function? is it possible to determine the previous function of the thread?
i would like to call some setter functions from my constructor and have my setter functions determine if it was the constructor that called them.
currently, i'm setting a boolean for this functionality, but perhaps there is another way?
public function Constructor(myNumber:Number) { this.myNumber = myNumber; }
I have a document class name elevator and my constructor is also elevator as usualHow to call this constructor function within elevator class? Is is possible or not?
Is it possible to create an instance of a class without triggering the class' constructor?[code]In the case above, say I wanted to play around with a Foo instance, but I really don't want my global.foobarCount going up, nor do i want to pass in any value at all for bar.This could be useful for introspection where you want to learn more about or pass a particular class object but don't want to provide required arguments or trigger anything that the constructor may do.Is this at all possible? (Obviously, new Foo() just doesn't cut it here, since it would throw and arguments error, nor does just using Foo, since that's a reference to the class itself).
I've got a simple program that consist of a document class and a buttonTemplate constructor class. I need to call a function called updateText that should be in the document class, when someone clicks on a button. So that after each button is clicked, it updates some text in my document class. My event listeners for the buttons are in the buttonTemplate class. My question is, how do you call a function in the document class from a constructor class? Here is my simplified code below
How do I call class constructor functions with indefinite number of arguments?
For example:(this piece of code doesnt serve any purpose, just to demonstrate an example)I wish to create a new class Foo with the parameters bar1, bar2, bar3, bar4.
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?
Consider a string template of the following format: String template = "The credentials you provided were username '{0}' with password '{1}'"; Substitution variable fields are of the form {n}, where n is a zero based index. This is the template format used in Adobe Flex, see StringUtil.substitute(...). And also .NET, IIRC. Since I want to re-use the templates used by the Flex code I'm looking for an Java equivalent. I'm aware of String.format(...) but the template structure is not identical. What is the best way to get the same "Flex compatible" template functionality in Java? Basically this is the desired end-result:
function doSomething(... args): Object { // do something with each arg }
However, I'm building the arguments for this dynamically:
var someArgs: Array = ['a', 'b', 'c']; doSomething(someArgs);
The problem is, when I call the function in this way args ends up being a 1-element array with someArgs as the first element, not a three-element array.How can I call doSomething with someArgs as the argument array?(For the search engines, this is argument unpacking)
Code: **Error** C:Documents and SettingsMetjuDesktop\_GENERAL FLASHflashcommetjuphysicsVector.as: Line 41: There is no method with the name 'super'. super ( x, y );
[code]...
I tried clearing the ASO files a thousand times, restart flash, resave the Vector.as file and still nothing.
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
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
When invoking super() in my subclass, I can pass uints and strings as params to super, but passing a TextField instance that is on the stage of the library instance of the subclass fails. Why? Is there a workaround?
I want to end up with the following effect. Bitmap pencil quickly moves accross the canvas diagonally and reveals an image. The image itself is drawing so I kinda want to make the illusion that the pencil draws whatever is on it. I don't want the pencil to follow the actual line in the image just to ask like a mask and quickly reveal the picture. So I was wondering if there is any cleverer way to achieve this, instead of animating everything manually
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()?
Thats the schematic of my the specific area of my program thats causing me trouble. In output i get "C Called" only. I'm guessing that on the return of the super() call to A() then it jumps back to C(), but id expect that the call stack could handle multiple super calls.
I recently put together a gallery based on examples that Stringy posted here.A couple improvements have been made, there is now a forward/back button that is sensitive to which photo you're on...thumbnails appear only on rollover. Run locally, it works perfectly.But there's a problem. For this particular project, there NEED to be 30 photos loaded in to the gallery, and they're biggish, average = 130k/per. When i'm running it live, the first 15 photos work fine (using the next/button) ... but once you reach the final 20...it CRAWLS. Most browsers I've tested it on crash at 28.Now, I don't know if this is just a feature of having so many images (if so, is there any way I can make a buffer of the next 5 images preloaded, and then delete those that were cached after I've viewed them?)
