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Showing posts from May, 2005

Connecting fields

Quick Recipe To connect field a in obj1 to field b in obj2 , use this: obj2 startScript: #b: when: {obj1. #aChanged} Now for the whole story ... Problem A colleague of mine wanted to make a drop-down list, where the options are not just set once, but provided and updated by the application. So, of course, when the options in the application changes, the items of the list widget have to be set to this new value. Nothing easier than that, just write a handler: onOptionsChanged     <on: optionsChanged in: app>     listWidget items: app options HOWEVER, he wanted to build this programmatically, not using a separate method. So, he easily came up with the following: listWidget startScript : #items: withArguments: {app options} when: {app. #optionsChanged} HOWEVER, this does not work as intended because the arguments to the script are evaluated only once, rather than every time the script is triggered. Well, this is what blocks are for, right? So this indeed works as intended: