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Very similar to the previous code
The code in Listing 15 matches the code in Listing 11 and Listing 12 with a few exceptions:
Set properties on the custom effect
Listing 16 sets the properties on the custom effect.
//Set various properties needed by the effect.
theEffect.theDuration = 4000;theEffect.rotateAngleFrom = 0;
theEffect.rotateAngleTo = 720;theEffect.wipeShowTarget = true;
theEffect.glowColor = 0xFF0000;theEffect.glowInner = true;
theEffect.glowStrength = 255; Once again, this code is very similar to the code in Listing 13. There is one major difference, however. The targets property for the effect is not explicitly set to the buttons as is the case in Listing 13.
Apply the effect to the two buttons individually
Listing 17 shows the major difference between the two programs.
btnA.setStyle("mouseUpEffect",theEffect);
btnB.setStyle("mouseUpEffect",theEffect);} //end constructor
//--------------------------------------------------//} //end class
} //end package Use the setStyle method and the effect trigger
Whereas the previous program explicitly sets the buttons as targets of the effect and calls the play method on the effect, this program uses the setStyle approach and associates the custom effect with a mouseUpEffect trigger on each button individually. As a result, when the mouse button is released while the mouse pointer is over one ofthe buttons, the effect is played on that button alone.
May not be possible to specify multiple targets
I don't know of any easy way to use this approach to cause the effect to be played on two or more components at the same time. The documentation hints thatthis may not be possible.
The end of the program
Listing 17 also signals the end of the Driver class and the end of the program.
I encourage you to run this program from the web. Then copy the code from Listing 18 through Listing 22. Use that code to create Flex projects.Compile and run the projects. Experiment with the code, making changes, and observing the results of your changes. Make certain that you canexplain why your changes behave as they do.
I will publish a list containing links to ActionScript resources as a separate document. Search for ActionScript Resources in the Connexions search box.
Complete listings of the Flex applications discussed in this lesson are provided below.
<?xml version="1.0" encoding="utf-8"?><!--CustomEffect02 11/26/09
Illustrates a custom effect, which is the parallelplaying of three standard effects:
WipeRightRotate
GlowThe effect is applied to two buttons each time either
button is clicked.This version sets the targets on the effect and calls the
play method on the effect.See the Flex 3 Cookbook, page 363
Also see http://livedocs.adobe.com/flex/3/html/help.html?content=createeffects_2.html#178126
Also see http://livedocs.adobe.com/flex/3/html/help.html?content=behaviors_04.html#275399
--><mx:Application
xmlns:mx="http://www.adobe.com/2006/mxml"xmlns:cc="CustomClasses.*"><cc:Driver/></mx:Application> 
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