MACROMEDIA FIREWORKS 8-EXTENDING FIREWORKS Specifiche Scaricare il pdf (Pagina 26)

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CHAPTER 11

The changes here are minor and no different than any ActionScript 2 to ActionScript 3 migration.

With the event handlers in place and assigned, this FLA can be published and executed in Fireworks.

The functionality should be equivalent between the two. Note that MMExecute(jsfCode) has remained

the same. Since ActionScript 3 supports the include statement, our workflow has remained relatively

unchanged.

Responding to Fireworks events in ActionScript 3

Responding to Fireworks events in ActionScript 3 is a bit more structured than in ActionScript 2.

Whereas in ActionScript 2 you simply define a function with the name of the event, in ActionScript

3 you must register an event handler for the events you want to listen to (just like we registered

event handlers for our buttons using addEventListener). The following code shows how to register

Fireworks events using the ExternalInterface object:

// Constructor

public function DrawRect()

{

// Register all Fireworks Event Handlers

ExternalInterface.addCallback("IsFwCallbackInstalled", ➥

IsFwCallbackInstalled);

ExternalInterface.addCallback("onFwActiveToolChange", ➥

onFwActiveToolChange);

ExternalInterface.addCallback("setfwActiveToolForSWFs", ➥

setfwActiveToolForSWFs);

ExternalInterface.addCallback("onFwActiveSelectionChange", ➥

onFwActiveSelectionChange);

}

// Fireworks calls IsFwCallbackInstalled whenever an event is generated

// Return true when you wish to handle the event.

function IsFwCallbackInstalled(funcName:String):Boolean

{

switch( funcName )

{

case "onFwActiveToolChange":

return true;

case "setfwActiveToolForSWFs":

return true;

case "onFwActiveSelectionChange" :

return true;

default :

return false;

}

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MACROMEDIA FIREWORKS 8-EXTENDING FIREWORKS Specifiche Pagina 26