Trees provide a way to display and work with basic hierarchical data. They offer a clear representation of structured information and are typically used in the main list for list-detail scenarios, popovers, or dialogs.

Tree – live example

When to Use

Use the tree component:

• To display hierarchically structured items.
• To enable selection of one or more items from a set of hierarchically structured items.

Don’t use the tree component:

• To display items that are not structured hierarchically. In this case, use the list component.
• To select one item from a very small number of non-hierarchical items. A select or combo box might be more appropriate.
• The hierarchy turns out to have only two levels. In this case, use a list with group items.

Anatomy

Tree

1. Header (optional): The first item of the tree serves as a header, and contains the title of the tree.
2. Node: Item that contains additional items.
3. Root: Single topmost node (level 1).
4. Leaf: Item that doesn’t contain any other items.
5. Expand/collapse icon: An icon for expanding and collapsing the node is provided automatically for each node that has child nodes.
6. Footer (optional): The last item of the tree can serve as a footer.

Standard Tree Item

The standard tree item (ui5-tree-item) is the simplest type of tree item. It provides the most common features, such as text, icon, and a checkbox or radio button.

1. Checkbox / radio button:
   • In multiple selection mode, a checkbox is displayed.
   • In single selection mode, a radio button is displayed.
2. Icon: You can place an icon at the beginning of an item (before the text).
3. Text
4. Additional text: The tree item can have an additional text located on the far right of the row (property: additionalText). You can also apply a semantic value to this text (property: additionalTextState property).
5. Delete button

Custom Tree Item

If additional components are needed, use a custom tree item. The custom tree item allows you to use any combination of components inside the tree.

We recommend sticking with the intended tree design and only inserting additional components within the given tree structure.

Variants

Standard Tree

Use this variant as a starting point.

Standard tree – live example

Single Selection

One item in the tree can be selected. To select an item, you can click anywhere on the item. For single selection, this is the preferred mode.

Always keep one item selected. The basic single selection mode doesn’t add any visual indication to the tree. If no item is selected, it can’t be differentiated from trees without selection.

Single selection – live example

Single Selection with Radio Button

One item in the tree can be selected. For this, the tree provides radio buttons on the left or right side of each line item. Use this selection mode only if clicking on the item triggers something else, such as navigation.

Ideally, always keep one item selected, even in the initial state.

Single selection with radio button – live example

Multiple Selection

Multiple selection – live example

Delete

Delete – live example

Behavior and Interaction

The tree is like a list containing hierarchical data. It acts as a container for items, with the possibility to expand and collapse nodes. In addition, the tree changes the indentation per level dynamically when the user expands a node, based on number of levels currently showing.

See the examples for the following variants:

• Standard Tree
• Single Selection
• Single Selection with Radio Button
• Multiple Selection
• Delete

Responsive Behavior

Related Links