http://blog.739saintlouis.com Fri, 25 Jan 2008 15:49:43 +0000 http://backend.userland.com/rss092 en So it is almost February already! Where did January go? I've been a bit slow out of the gate this year as far as keeping up a decent pace in posting helpful samples to my blog. Actually, I have been working on things behind the scenes, a few details of ... http://blog.739saintlouis.com/2008/01/25/new-year-a-bit-slow-out-of-the-gateheres-what-i-have-been-doing/ Adobe Flex sdk beta 3 and Adobe AIR beta 3 just release to Adobe Labs yesterday, so I have updated my version checker AIR application to detect the new SDK and also compiled the app against the new AIR classes targeting the new AIR runtime. All other blog references will be ... http://blog.739saintlouis.com/2007/12/13/flex-sdk-fds-lcds-version-detection-adobe-air-application-updated-for-air-beta3-and-flex-sdk-3-beta3/ This isn't as difficult as some may think. Basically your itemRenderer opens up a popup. When the renderer creates the popup, it sets an "opener" property on the popup pointing back to "this", which is the itemRenderer. That way, when the editing is finished in the popup, ... http://blog.739saintlouis.com/2007/12/12/datagrid-popup-as-itemeditor/ I had a customer asking how to do this. Sorting the datagrid sorts the underlying dataprovider. Remember that things like ArrayCollections are just essentially views of the data. So adding an element to the underlying data, regardless of the position at which you add the new item, will not affect its ... http://blog.739saintlouis.com/2007/12/11/adding-a-row-to-the-top-of-a-sorted-datagrid/ I have seen a few people and had a customer ask how to detect when a flex app loses focus. Here is a sample app that shows the technique and a practical application of this functionality. When you click and drag a DividedBox separator, if you move the mouse outside the Flex ... http://blog.739saintlouis.com/2007/12/07/detecting-when-a-flex-application-loses-focus/ XML and ampersands do not mix well. Flex uses mxml which is XML. This can lead to issues when writing binding expressions in mxml tags for component properties when you are trying to write logical expressions using 'and'. Here is a simple sample that demonstrates how to escape the ampersands in the expression ... http://blog.739saintlouis.com/2007/12/05/damn-ampersands-escaping-in-expressions-or-using-compoundternary-logic-expressions/ I just recently was made aware that there are actually 3 different "builds" of Flex SDK "hotfix 3" out there. 1. Originally hotfix 3 was applied to hotfix 2 (updating a few swcs) - version 1 2. Late summer 2007 it was realized this confused some folks so the hotfix ... http://blog.739saintlouis.com/2007/11/26/flex-sdk-fds-lcds-version-detection-adobe-air-application-updated/ This is a follow on to my previous blog entry: http://blog.739saintlouis.com/2007/11/22/flex-linebreaks-in-the-datagrid/ Here I show how to deal with line breaks in itemRenderer and itemEditors instead of in a datagrid labelFunction. (This is also a nice example of writing simple, separate itemRenderer and itemEditors.) Here is the application code: ... http://blog.739saintlouis.com/2007/11/26/flex-linebreaks-in-datagrid-itemrenderer-and-itemeditors/ This is a follow up to my previous linebreak post. This demonstrates how to deal with parsing linebreaks when they are in the text data for a datagrid. You can either escape them in your source text data as shown in the previous post or you can use a labelFunction and some ... http://blog.739saintlouis.com/2007/11/22/flex-linebreaks-in-the-datagrid/ I had a customer who was having problems with linebreaks in her Flex code. I had used linebreaks before with no problem until I realized that she was setting text with linebreaks in mxml and not setting properties dynamically as I had done in all instances in teh past when dealing ... http://blog.739saintlouis.com/2007/11/19/flex-linebreak-bug-workaround/