Flex: How to execute a method from an htmlText anchor
With Flex, I learn something new every day.
Today I wanted to add a link to the htmlText property of an mx:Text component. However, I wanted the link to actually execute a function rather than navigate to some external content.
When I’ve needed this in the past, I’ve had to very carefully layout some Text components inline with a LinkButton to give the appearance of a homogeneous flow of text, but this was clunky and I figured there had to be a better way.
The mx:Text component has a built-in event listener property called “link”:
1 | <mx:Text link="onLinkClick(event)"/> |
You can dispatch link events from your anchor href tags embedded in your htmlText. The event type can be passed through the listener to the handler to accommodate multiple event types:
1 2 3 4 5 6 7 | <mx:Text link="onLinkClick(event)"> <mx:htmlText> <![CDATA[ This is my HTML. I can <a href="event:myEventType">link</a> this text to execute an actionscript method. ]]> </mx:htmlText> </mx:Text> |
The handler can then use the text property of the TextEvent to use in a switch or other conditional if your htmlText contains multiple links, or you can skip passing the event to the handler altogether if you wish.
1 2 3 4 5 6 7 | private function onLinkClick( event:TextEvent ) : void { if ( event.text == "myEventType" ) { //do something } } |
This is incredibly simple to implement and would have come in sooo handy in the past.
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