The title property is simply a property that gets passed to the title UIComponent in commitproperties. Timeline:
1. You call super.commitProperties() 2. super.commitProperties() sees that this._title hasn't changed since the last commitProperties(). so doesn't set _myTitleComponent.title (or _titleLabel.text, whatever, but you get the idea) 3. You change this.title to "Boo!" 4. super.set title() sets this._title = "Boo!" 5. super.set title() calls invalidateProperties() 6. Flex realises you're already inside this.commitProperties for the instance in question, and ignores the invalidateProperties(). - If it didn't, you'd get an endless loop. Result: The title on screen doesn't get updated in this "validate properties" phase. Next time your commitProperties gets run, when you call this.title = "Boo!" it checks, realises that this._title *already* equals "Boo!", so it never marks the _title property as changed, so super.commitProperties() never bothers to update _myTitleComponent.title Result: It *never* makes it to the screen. -Josh On Thu, Aug 7, 2008 at 9:25 AM, Daniel Gold <[EMAIL PROTECTED]> wrote: > I don't think I've seen anything like this before and maybe I'm just > going crazy. > > I've got a class that extends TitleWindow, it has a few setters and some of > these can affect what the displayed title should be. These all use > invalidation flags and don't get fully committed until commitProperties. If > I call super.commitProperties() at the beginning of my commitProperties > function, and then change the title somewhere else in that function, the > title NEVER gets commited. I've stepped through the code and I really can't > see why. There are only two places in Panel.as that modify _titleChanged. I > see it getting flipped to true in the setter, then when commitProperties > gets around to executing, the flag is magically false? > > Anyways, if I call super.commitProperties after I do all my work and > possibly modify the title, everything is fine, except it looks really whacky > because I've had it ingrained for years that you always call super class > functions at the beginning... > > A subclass of TitleWindow as simple as this exhibits the behavior: > > <?xml version="1.0" encoding="utf-8"?> > <mx:TitleWindow xmlns:mx="http://www.adobe.com/2006/mxml"; > layout="absolute" width="400" height="300"> > > <mx:Script> > <![CDATA[ > > override protected function commitProperties():void > { > super.commitProperties(); > title = "ljsdflksjdflkj"; > } > > ]]> > </mx:Script> > </mx:TitleWindow> > > -- "Therefore, send not to know For whom the bell tolls. It tolls for thee." :: Josh 'G-Funk' McDonald :: 0437 221 380 :: [EMAIL PROTECTED]
