在CardLayout等中使用ActionListener重用动态JList

Question

I am creating a JList dynamically and I want to use it on different JPanels where I can call a setQuery(query); on it. There is a Search Button + field connected to it too. Is there a way to place the JList, search button and search field on like 10 different panels without having to duplicate the code everywhere? I can't place it on a seperate JPanel as it has other buttons / gui elements that need be around it depending on what JPanel is being displayed. I've looked everywhere but there is not much mention of reusing a dynamic JList.

Answer 1

You can place a component in one visualized container only. Consider creating a method that creates these components for you, that returns a JPanel that holds the components, and perhaps have all created JLists share the same ListModel, and all JButtons the same AbstractAction.

Or another option, if you are using CardLayout to swap JPanels, and you want all of the panels to hold these components above, consider not doing this but moving the JList, JButton, and JTextField out of the cards and on to a less dynamic portion of your GUI.

Also, this is not clear to me:

I can't place it on a seperate JPanel as it has other buttons / gui elements that need be around it depending on what JPanel is being displayed.

Please clarify and tell us more. Images might help as well.

Answer 2

还请考虑装饰器模式您的列表/搜索面板将是主要组件，而装饰原始器将导致变化。