Essential ActionScript 3.0 > Display and Interactivity > Events and Display Hierarchies

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Foreword

Preface

Pt. I. ActionScript from the Ground Up

Pt. II. Display and Interactivity

Ch. 20. The Display API and the Display List

Ch. 21. Events and Display Hierarchies

Hierarchical Event Dispatch

Event Dispatch Phases

Event Listeners and the Event Flow

Using the Event Flow to Centralize Code

Determining the Current Event Phase

Distinguishing Events Targeted at an Object from Events Targeted at That Object's Descendants

Stopping an Event Dispatch

Event Priority and the Event Flow

Display-Hierarchy Mutation and the Event Flow

Custom Events and the Event Flow

On to Input Events

Ch. 22. Interactivity

Ch. 23. Screen Updates

Ch. 24. Programmatic Animation

Ch. 25. Drawing with Vectors

Ch. 26. Bitmap Programming

Ch. 27. Text Display and Input

Ch. 28. Loading External Display Assets

Pt. III. Applied ActionScript Topics

Appx. A. The Final Virtual Zoo

Colophon

Index

Chapter 21. Events and Display Hierarchies

In Chapter 12, we studied ActionScript's built-in event architecture in general terms. In this chapter, we'll take a closer look at how that event architecture specifically caters to objects in display hierarchies.

ActionScript's system of dispatching events through an object hierarchy, as described in this chapter, is based on the W3C Document Object Model (DOM) Level 3 Events Specification, available at http://www.w3.org/TR/DOM-Level-3-Events.

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Contents

Part II: Display and Interactivity > Events and Display Hierarchies

Chapter 21. Events and Display Hierarchies