Flex :: Static Constants Return Instance Of Specific Class?
Apr 29, 2010
I have a class ErrorMessages which holds all my error messages as static constants. So I could access them like ErrorMessages.PASSWORD_INVALID or ErrorMessage.PASSWORD_TOO_SHORT. I want to know if it is possible to have separate classes that hold subset of these constants and access them like ErrorMessages.PASSWORD.INVALID or ErrorMessages.PASSWORD.TOO_SHORT, etc. This way I can more structured static structure and makes it much easier to use autocomplete. I tried few different ways and couldn't figure out if this was possible..
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Feb 23, 2011
I am working on a Flash site template for which I am implementing the possibility for the users to change the theme dynamically while the site is opened.Basically, the site will have a few themes available and when the user selects a new theme, all of the site objects will change their properties (colors, alpha, fonts, etc) to fit the new theme.
And my questions is what is the best approach to sending the theme information to all of the objects in the site.I was thinking of making a static class called "Theme" and when the objects need a property, they will call a static getter of the Theme class that will return the appropriate property value for the object.But, from my understanding, static properties are quite slow and seeing that I may need quite a lot of them, maybe more that 100 for the whole site, will this approach be too slow ?
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Feb 23, 2011
I am working on a Flash site template for which I am implementing the possibility for the users to change the theme dynamically while the site is opened.Basically, the site will have a few themes available and when the user selects a new theme, all of the site objects will change their properties (colors, alpha, fonts, etc) to fit the new theme.And my questions is what is the best approach to sending the theme information to all of the objects in the site.I was thinking of making a static class called "Theme" and when the objects need a property, they will call a static getter of the Theme class that will return the appropriate property value for the object.
But, from my understanding, static properties are quite slow and seeing that I may need quite a lot of them, maybe more that 100 for the whole site, will this approach be too slow ?
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Aug 4, 2010
I am trying to set some public static constants on a class conditionally by passing variables to the compiler e.g. -define=CONFIG::ENVIRONMENT,'testing_server'
[Code]...
Obviously this means I have to tinker with long command line setting each time. I thought my initial approach was possible given the documentation and various tutorials I have read.
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Jul 27, 2009
If all I have is an instance of an object, can I call a static method of its class? For fun, let's say I don't know what the name of the class is, only the name of the static method.
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Mar 25, 2011
I have a ManagerClass with a Singleton implementation inside, I get the instance by calling ManagerClass.getInstance().
Can I get that same instance by just having the class name as a string? I have tried something like:
var theInstance:* = getDefinitionByName("ManagerClass").getInstance as Class;
theInstance.doTrace(); // I get a 1009 error here
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Jun 10, 2009
I have two Cairngorm MVC Flex applications (a full version and lite version of the same app) that share many Classes. I have put these Classes into a Flex Library Project that compiles as an SWC. Both applications use some static String constants. Right now, I am storing these in the ModelLocator:
package model
{
[Bindable]
public class ModelLocator
[Code]....
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May 4, 2009
I'm kind off oblivious as to what I'm doing wrong here... I have two classes: - Alley - AlleyCat
[Code]...
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Feb 1, 2009
Is there anyway to include a function or overrite something in a class that'll output a custom string when the object is called as a string?
So for example if I created a class named "myClass" and I instantiated it:
Code:
var myObject : myClass = new myClass();
When I:
Code:
TextControl.text = "blah blah, " + myObject;
myObject is getting casted as a string. Normally it would output:
"blah blah, [object myClass]"
Is there a built-in function that recast the object as string? Is there anyway for me to change that string output? I know I can just make a public toString() method in the class or something, but just wondering if there was something better.
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Sep 21, 2011
My method has been passed a class instance, but it was typed through an interface so I'm not 100% sure what class it is. I'd like to attempt call a static method on that instance's Class.. is there an easy way to do this without being forced to pass the class along as well?
Something like this:
ActionScript Code:
public function foo(myBarInstance:IBar):void {
var barClassPointer:Class = getClass(myBarInstance);
try {
[Code].....
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May 3, 2010
What I'm looking for is a way to reference the document class instance, to be able to access functions and variables that other classes need. I'm currently doing it with this little piece of code I found on some blog or forum.
Code: Select all// This is in the document class
private static var _instance:DocClass; // I have tried setting this to public and accessing it directly as well
public static function get instance():DocClass { return _instance; }
[code]....
This seems to work as it should in Flash CS4, but when I try to run the same code in CS5 I get the following error message:
Code: Select allC:UsersImpenDocumentsMy DropboxFlash Project\_SPELTankGameMenuShop.as, Line 238 1195: Attempted access of inaccessible method globalFunction through a reference with static type DocClass.
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Nov 4, 2011
I need to know when an element is added to the stage (using main document class). So i use :
Code:
public override function addChild(__child:DisplayObject):DisplayObject{
super.addChild(__child);
trace("child added");
return __child;
}
Which works fine. I also use a static class, to which i pass the stage using :
Code:
public static function setStage(__stage:Stage):void{
_stage = __stage;
}
But if i add to the stage (_stage) a MovieClip from the static class, my "real" stage doesn't seem to get that something was added. So i guess _stage !== stage.
So why is this happening, why is _stage not getting the methods of stage ?
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Jan 22, 2010
I have a base class which is being created via remote_object [RemoteClass alias] from the server.I have other specialized classes that are derived from this baseclass, but serialization with the server always happens with the base class.The base class has meta data that defines what the derived class is, for example
[RemoteClass (alias="com.myco...')]
public Class Base
{
[code]....
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Oct 31, 2009
I have declared some public static consts within a class Instrument. So that I can hopefully access them like Instrument.SAX, instrument.HARP, etc. etc. But when I go to trace out or compare the consts, it gives me this error:
1058: property is write-only
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Jul 12, 2011
I am wondering if it's better to pass an instance of a whole class to another class or just specific properties of that class. For example if I want the height property of class A in class B do I pass just the height value into class B or the whole instance of the class and use classA.height in class B?
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Jan 29, 2009
I'm having a little trouble with the properties of an instance of a specific class. Here's and example of the code I am using:
Code:
package {
import flash.display.MovieClip;
import flash.events.*;
public dynamic class Circle1 extends MovieClip {
private var _root:Object;
[Code] .....
This is in the class code for Circle1. Now here is the error that is being displayed int he Output Box when I try to run the file:
Code:
TypeError: Error #1010: A term is undefined and has no properties.
at Circle1/eFrame()
Here's the code that creates the two class instances as children on the Main Time Line:
Code:
if (spaceDown) {
var newCircle1:Circle1=new Circle1();
addChild(newCircle1);
} if (enterDown) {
var newCircle2:Circle2=new Circle2();
addChild(newCircle2);
}
EnterDown is a defined variable for the key press of Enter, and spaceDown is a defined variable for the key press of Space.
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Dec 9, 2004
Is it possible to rename a class-instance that has already been created with a specific name?
For instance:
// Step 1) Create and name class-instance
var myClassInstance_1:myClass= new myClass();
// Step 2) Change name of myClassInstance_1
?????
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Aug 4, 2009
I'm having some troubles with the use of interface and inheritance in AS3. I've done lots of OOP in the past and what I'm trying to do seems obvious to me, but doesn't work in AS3. The question is : Is it possible to override a function that return an Object of class A, and make it return an Object of Class B which extends A ? It seems not to be possible, since I'm getting a signature error in Flash, when compiling. For example, the following set of class do not compile (the code in function definition doesn't matter):
[Code].....
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Mar 22, 2009
How do you go about creating a Class that just holds constants such as the StageScaleMode or StageAlign classes. I tried just making a class with just public static constants and an empty contractor but I get errors.
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Dec 27, 2009
I have some code from a CS3 app composed of the .FLA file with an .AS file for the class that had definitions for two private classes in it. Yesterday I brought the files into CS4 and noticed that they did not compile. Gives an 1120, access of undefined property and names a constant. I have reduced this problem down to bare bones and it still occurs, so it is a bug in CS4.
[Code]....
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Jul 15, 2010
I have this class
package somePackage
{
public class SomeClass
[Code]...
I want to be able to get those static property given it's name.
Example:
public static function getProperty(propertyName: String): SomeClass {
//don't know what goes here
}
[Code].....
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May 8, 2011
Flash UI Components have many different styles to set, which require passing a string name to the setter method.while this certainly is not challenging, the use of a constants class would be beneficial but i can't find one.is there no constants class available with all of the possible style settings?
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Sep 3, 2009
I'd like to make an object that has it's properties named by constants from another class but can't quite get it to work. I'd essentially like to do something like this:
var myObject:Object = {Event.OPEN:"value", Event.COMPLETE:"value2"};
This syntax causes compiler errors.
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Jun 28, 2010
Given that both of these calls to getQualifiedClassName return the same thing (mx:Label), how would one go about programatically differentiating between an instance of a class and a reference to the class...
var lab1:Label=new Label();
var lab2:Class=Label;
var qcn1:String=getQualifiedClassName(lab1);
var qcn2:String=getQualifiedClassName(lab2);
In other words, how could I know that lab1 is of type Label, while lab2 is type "Class". typeof() simply returns "object" for both... getQualifiedClassName returns "mx.controls::Label" for both...
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Nov 22, 2009
Alright, so I have a class that is linked (via the linkage panel) to a scrollbox class. I'll paste the class here:[code]Ignoring the formatting, the commented out functions are the ones causing the issue. Adobe says that it's a static class and I can't use non-static functions. The way I wanted to use it was:
1. Call the page button generating function above.
2. In the main code in my program is this line:scrollbox.setClickFunction(historyContent.generate Page);So when the buttons that are supposed to be generated are clicked, the scrollbox class can call the History pages generatePage function and pass it which page to show. (I did this because there was a lot of text and a limit on how much would display, so small chunks sounded logical).
3. In the onClick function (which I haven't finished yet because the rest wont work), when you click one of the buttons it calls the set function. Its that simple.
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Sep 15, 2011
I'm using a library that has a function that returns an instance of some class Engine.
I'd like to tack on some interfaces to Engine, so I subclass it class InterfacedEngine extends Engine implements AwesomeInterface. but when I change the code that uses the classes from this:
var engine:Engine = generateEngine();
to this: var interfacedEngine:InterfacedEngine = generateEngine();
It gives me a runtime error (elision mine):
TypeError: Error #1034: Type Coercion failed: cannot convert ...::Engine@1bc2bf11 to ....InterfacedEngine.
What about AS3 classes am I misunderstanding?
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Oct 14, 2009
I have to admit I pretty much ran away from Flash when AS2 came along and only used it for animation purposes over the last 5 years.So I'm having a major crash course in AS3 in Flash CS3 and I'm not enjoying it one bit. I'm getting maybe 10mins of finished work per hour as I try to figure out the limits and rules of AS3. Quite often it seems that AS3 simply can't do what I want it to. Anyway: Characterchecks.as is the main class and it loads a bunch of XML into four arrays. The file starts like this:[code]If I trace the value of, say, cc._Categories from the main FLA, it's empty. I'm guessing that the next line of AS in the main FLA doesn't wait for the previously called function to complete? (This may tie in to my next problem)My next step is that I want to display various things based on the data in the array. I have another class, Display.as which will hold all the functions to create the items on display. I thought it would be best for these to be a separate object. I wonder if I'm right?
So I declare an instance of Characterchecks in the main FLA and call it cc, and then run the functions to populate the arrays... Now I create an instance of Display and call it cd. How can I get functions in cd to see the values of the variables in cc? And if the main timeline can't tell that the functions aren't finished filling the arrays, how is cd supposed to know?I might be asking dumb questions, or maybe I'm doing things ***-backwards, I don't know. I'd appreciate any help, I really would. This whole thing has me at the end of my tether... being the most technically advanced person in my circle of co-workers and web design friends means I have no-one to explain why things need to be done a certain way or what the best way is.
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Aug 1, 2011
I wrote a singleton class to keep track of some variables across my application.
I am getting a syntax error that I can't figure out, I am sure that I am missing something simple but it's been one of those days. Anyone see something wrong with my code?
The error is 1061: Call to a possibly undefined method setResult through a reference with static type Class.
My function in my singleton class
public function setResult(resultNumber:int, value:int): void
{
switch(resultNumber)
{
[Code].....
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Dec 23, 2011
How can I return an object with an update data, that is pass in to a public static function?
GetDate.dayName(MyDate.setDate(1984,3))
//MyDate with new info (year, month) will be pass into GetDate.dayName
package hwang.time
[code].....
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Jan 16, 2010
I'm trying to create a class that contains an array. However i want to require that the items in the array are themselves of a specific class. Im told there is some sort of tag you can add to do this, but for the life of me i cannot find what it is.What i hope for is something like:
public class myClass{
public var foo:String;
[ArrayType(class="BarClass")]
[code]........
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