Thanks Everyone
On Sun, Dec 20, 2009 at 3:23 AM, Glen Pike postmas...@glenpike.co.ukwrote:
Hi Omar,
I have the same thing - I am coding in Flash Develop with hand-rolled
button classes and other classes. I was a little concerned at first with
the public / private thing, but I am learning to live with it...
I think the lesson/trick here is to work in the way you feel comfortable
- Flash's IDE forces you to declare author-time instances public, but you
can still use encapsulation as you see fit - having accessors and methods
manipulate the public on-stage assets. For me, I have created a custom
class template in FD that clearly separates my IDE variables from my other
class variables using comments.
IMHO, If you understand the rules, then I guess it's okay to break them
sometimes.
The test is - can you return to your work in 6 months time and understand
what you did, (maybe you don't have to)? If so, then your coding is
probably okay; cutting a few corners may wind up the purists, but the most
important thing is that you are getting your work done in a way that's clear
to you and possibly other people if they have to maintain your code :)
Hope this helps and best wishes for the season.
Glen
Omar Fouad wrote:
Hi all,
I've been working with ActionScript 3.0 since 2006 and I used some
technique
in the last two years. I believed that this way is the best for splitting
code from design, but today I asked myself whether this approach is REALLY
professional or not.
What I do is a create a pure ActionScript project in Flex Builder 3, and I
create a FLA file with, which has in its library a bunch of assets that I
use as components or models, such as buttons, list items, image containers
with masks and so on - then I give each of the component a linkage name.
For example, If I need to create a button I just create a MovieClip (or
Sprite) in my library that represents this simple button designed the way
it
should be, this MovieClip contains a TextField named label and it is
dynamic. It also contains a MovieClip named background, which is the bg
of
the button behind the label. Finally I give this button a linkage
Identifier
BasicButton.
After that I publish the FLA and I create a Class that represents this
button:
package {
import flash.display.Sprite;
[Embed(source='Lib.swf', symbol='BasicButton')]
public class BasicButton extends Sprite{ // and not MovieClip because
it
is based on one frame only
// I declare the variables inside of it. They have to be
public.
public var label:TextField;
public var background :Sprite;
public function BasicButton(labelString:String) {
label.text = labelString;
this.buttonMode = true;
this.addEventListener(MouseEvent.ROLL_OVER, onOver);
this.addEventListener(MouseEvent.ROLL_OUT, onOut);
}
private function onOver(e:MouseEvent):void {
//changes the background color on roll over
}
private function onOut(e:MouseEvent):void {
//resets the background color on roll out
}
}
}
Of course I can create an abstract button class that has all the roll over
and roll out instructions in it, and just make BasicButton an extension of
it, but whatever this is just an example.
In the Main class:
package {
import flash.display.Sprite;
public class Main extends Sprite{
private var myButton:BasicButton;
public function Main() {
myButton = new BasicButton(Click Me);
myButton.addEventListener(MouseEvent.CLICK, onClick);
addChild(myButton);
}
public function onClick(e:MouseEvent) {
trace(button clicked);
}
}
This works and all of course. And I can also embed the button inside of
Main
and give it a variable of type Class, but in this cases I needed to have
it
in a different Class to be able to give it more functions.
This gives me flexibility when I need to make design tweaks to this button
(or all the other assets), but I've found a problem, which is that I
cannot
make things encapsulated since the variables label and background
inside
of BasicButton HAVE to be public (if I declare them as private it won't
compile). So in a way getters and setters have no use for such instances.
How can I maintain encapsulation in this case? Or it's just this a good
way
to create flash content?
Thank you
Cordially.
--
Glen Pike
01326 218440
www.glenpike.co.uk http://www.glenpike.co.uk
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--
Omar M. Fouad - Adobe™ Flash© Platform Developer
http://.omarfouad.net
Cellular: (+20) 1011.88.534 / (+20) 1444.37.175
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