Xu Cui
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516 Stories by Xu Cui
Return to table of contents ED defines 4 custom events,CommandCompleteEventCommandProgressEventDataSynchronizationEventSelectedItemChangeEvent The main job of these custom events seems to define constant (say public static const COMPLETE : String = &
Return to table of contents All command classes are inherited from class Command. By name, commands perform something. Every command has execute() which does the job, and emits progress and complete event, and possibly error event. The base class, Co
Return to table of contents 1. CustomAutoComplete This component can be very useful. It pops up a list of suggestions based on characters entered by the user. This is a very simple example on how to use it: <controls:CustomAutoComplete id="se
Return to table of contents After the application is initialized, Event “applicationComplete” is dispatched and the following function is called: // in employeedirectory.mxml ui.init(); Go to ApplicationUI.mxml, we find ui.init() issues t
Return to table of contents In ApplicationUI.mxml (init()), you will find the following two lines: // in ApplicationUI.mxml, in init() titleControls.addEventListener( "showHelp", showHelpScreen ); addEventListener( "close", closeP
Return to table of contents Which line(s) in the code determines the size of the application? This seemingly simple question did take me some time. The answer lines in the following two lines: // in ApplicationUI.mxml <mx:vbox id="contentBox&
Return to table of contents While reading ED code, I frequently encounter singleton pattern. A singleton class is a class you can only instantiate once and it is useful to store application-wide data (say window position). ApplicationModel and all ma
Return to table of contents CSS is very convenient to control the appearance of the user interface. Let’s see the following code snippet inside employeedirectory.css too see how to use styling. .appHelpButton { up-skin: Embed("/embed_asset
Return to table of contents When I downloaded and launched ED, I was impressed by its elegant user interface. So how is implemented? The relevant files are: And the hierarchy of UI is shown below. I expand each custom component (except EmployeeView a