2023-03-31 15:44:55 +02:00

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<!-- Copyright 2000-2023 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license. -->
# Miscellaneous Swing Components
<link-summary>Overview of useful Swing components provided by IntelliJ Platform.</link-summary>
### Messages
The [`Messages`](%gh-ic%/platform/platform-api/src/com/intellij/openapi/ui/Messages.java) class provides a way to show simple message boxes, input dialogs (modal dialogs with a text field), and chooser dialogs (modal dialogs with a combo box).
The function of different methods of the class should be clear from their names.
When running on macOS, the message boxes shown by the `Messages` class use the native UI.
The `showCheckboxMessageDialog()` function provides an easy way to implement a _Do not show this again_ checkbox on messages.
Note that it is recommended to use non-modal notifications instead of modal message boxes whenever it's appropriate.
Please refer to the [Notifications](notifications.md) topic for more information.
### JBSplitter
The [`JBSplitter`](%gh-ic%/platform/platform-api/src/com/intellij/ui/JBSplitter.java) class is JetBrains' replacement for the standard [`JSplitPane`](https://docs.oracle.com/javase/8/docs/api/javax/swing/JSplitPane.html) class.
Unlike some other JetBrains-enhanced Swing components, it's not a drop-in replacement and has a different API.
However, to achieve a consistent user experience, it's recommended to use `JBSplitter` instead of the standard `JSplitPane`.
To add components to the splitter, call the `setFirstComponent()` and `setSecondComponent()` methods.
`JBSplitter` supports automatic remembering of the split proportion.
To enable it, call the `setSplitterProportionKey()` method and pass the ID under which the proportion will be stored.
### JBTabs
The [`JBTabs`](%gh-ic%/platform/platform-api/src/com/intellij/ui/tabs/JBTabs.java) class is JetBrains' implementation of the tab control, used for editor tabs and a few other components.
It has a significantly different look & feel compared to the standard Swing tabs, and looks less native on the macOS platform, so it's up to the developer to choose which tab control would be more appropriate.
### Toolbars
See [Toolbar](https://jetbrains.design/intellij/controls/toolbar/) in the IntelliJ Platform UI Guidelines for an overview.
[Building UI from Actions](basic_action_system.md#building-ui-from-actions) covers creating `AnAction`-based toolbars.