I use a couple of dialogs that are created and shown by clicking on buttons on a page. The dialogs have widgets with listeners. Once the user is done with a dialog, it's hidden (I guess there is no Dialog.destroy method or equivalent). The dialogs can be used as many times as the user clicks on the buttons. Do I need to remove the listeners and detach the dialog when the dialog is hidden? Do I need to create each dialog only once and re-use it? What the best practices for dialogs?
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