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lists_and_trees.md: formatting

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Yann Cébron 2022-03-29 14:22:34 +02:00
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topics/user_interface_components/lists_and_trees.md
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@ -18,14 +18,14 @@ In addition to the features of [`JBList`](upsource:///platform/platform-api/src/
### ColoredListCellRenderer and ColoredTreeCellRenderer
When you need to customize the presentation of items in a list box or a tree, it's recommended to use the [`ColoredListCellRenderer`](upsource:///platform/platform-api/src/com/intellij/ui/ColoredListCellRenderer.java) or [`ColoredTreeCellRenderer`](upsource:///platform/platform-api/src/com/intellij/ui/ColoredTreeCellRenderer.java) classes as the cell renderer.
These classes allow you to compose the presentation out of multiple text fragments with different attributes by calling `append()` and to set an optional icon for the item by calling `setIcon`.
These classes allow you to compose the presentation out of multiple text fragments with different attributes by calling `append()` and to set an optional icon for the item by calling `setIcon()`.
The renderer automatically takes care of setting the correct text color for selected items and of many other platform-specific rendering details.
### ListSpeedSearch and TreeSpeedSearch
To facilitate keyboard-based selection of items in a list box or a tree, you can install a speed search handler on it using the [`ListSpeedSearch`](upsource:///platform/platform-impl/src/com/intellij/ui/ListSpeedSearch.java) and [`TreeSpeedSearch`](upsource:///platform/platform-impl/src/com/intellij/ui/TreeSpeedSearch.java).
This can be done simply by calling `new ListSpeedSearch(list)` or `new TreeSpeedSearch(tree)`.
If you need to customize the text which is used to locate the element, you can override the `getElementText()` method.
To customize the text which is used to locate the element, override the `getElementText()` method.
Alternatively, you can pass a function to convert items to strings.
A function needs to be passed as `elementTextDelegate` to the [`ListSpeedSearch`](upsource:///platform/platform-impl/src/com/intellij/ui/ListSpeedSearch.java) constructor or as `toString` to the [`TreeSpeedSearch`](upsource:///platform/platform-impl/src/com/intellij/ui/TreeSpeedSearch.java) constructor.
@ -48,4 +48,4 @@ To use a toolbar decorator:
<!--
### AbstractTreeBuilder and AbstractTreeStructure
TODO link to tutorial
-->
-->