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How about two symbols on each line of your tree. One for selecting and one for expanding to see children. You would have to render it manually, maybe as a table with Javascript methods on each image/button to show or hide rows, but once you worked out the basic functionality, it should be fairly easy to render dynamically from the backend.


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This is a ripe opportunity for a type-ahead control. In cases where you have a large number of possible choices like this, it is more likely that the user already knows the answer. It would improve the usability tremendously if you let them input the answer and move on, instead of searching a very long list, which wastes their time. For web, I would suggest ...


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So as stated in the edit, I was thinking of limiting list groups to a number of max number of items - let's say 10. To reveal all items the user would have to click a "Show all..." button: This seemed like a decent approach but then the problem is dealing with selected items that are hidden by default. E.g. if item#15 is selected, but the list displays ...


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I feel from a user's standpoint that I very much appreciate a list that auto completes as I type. I don't mean just the first letter, but each letter drills you down farther. In my experience it is the quickest way to get to am item bar none. It is also very rare and I wish more programmers would do it or use tools that do it for them if they aren't into ...


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Option 2 is a better idea. "Have a 'Recently used' section at the top with the x most-recently-used items (3? 5? 10?) and an 'All' section below with everything on the list." In terms of your 'recency or frequency' question, it all depends on what you are holding in the list. For example, if you have data which the user is unlikely to select ...



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