Similar to skinning a combobox with an error state, there may be times where you need to show the error state for a checkbox without showing its error string.
Since the ComboBox doesn’t come with an out-of-the-box error state / skin without using an error string, you can grab the sample code below to give your comboBox an error skin. The example implements the interface IValidatable which for the most part is a stub interface that should be considered itterable by the application so you can easily request that any IValidatable component shows its error state ( showError() ). The point of doing this instead of using set errorString is that in certain instances you may not actually want to use an error string, or in the case of a comboBox you may want to have its parent container show the error string.
Another case to use this method of validation would be if you have a parent container with multiple controls inside of it, the parent container is responsible for messaging the error to the user but each control should display an errored state regardless of displaying an error string.
I was working on a custom menu component uses Menu. Turns out that Menu doesnt inherintly understand the stage height of the application. What I ended up doing was creating CustomMenu which extends Menu and adds in height bounds for the root and any sub menu.
A quick sample on how to pass in token values to a resource bundle string. When you need to replace a token value in your bundle, you will want to use the resourceManager or ResourceManager and pass in the value you want to replace in your bundle as an array, this is in the 3 parameter of the resourceManager’s getString() method.
Im working on a project that required a Keyboard Manager to track shortcut keys within the Flex app, so i went ahead a wrote this quick little POC that I later incorporated into the project. I handle shortcut keys by adding and removing key listeners and mapping them to a dictionary of available keys. My final implementation handled [cmd + shift + key] for windows and [alt + key] for mac switched based on Capabilities.os. [Read more →]
Ive used callLater() quite a few times before, but about a week ago a co-worker asked me if I knew exactly when callLater() was called. Well I think its 1 millisecond after the method executes, to which he re-asked if its after the method or after the block of code executes? Great question, and I honestly couldn’t with absolute certainty answer him so I went ahead and wrote this quick POC to prove the fact one way or another.
[Read more →]
On a project im working on I ran into a very strange error when trying to load in a simple .jpg image. The image wouldn’t load. Now this sounds like a very familiar issue and easily solvable right? That what I thought too, but as it turns out, it turned into a couple hours of work and debugging. The issue wasn’t as simple as an incorrect url, network timeouts, dead links, etc… Debugging the complete() event shows the image was getting to where it had to get to and that flex felt that it did everything it had to do. So what was the problem with loading the image? [Read more →]
There have been plenty of times that Ive needed to reuse the values of my enums as an array. A good example of this would be an enumeration of US states. There are many ways of doing this, however I find that writing an enumeration of static constants gives me the most flexibility and accuracy in my code.