name: List Builder
description: A component that allows users to build and manage lists by selecting items from one list and adding them to another.
  Provides drag-and-drop or click-to-move functionality for managing selections.
category: Complex Components
slds_classes:
  root: ''
  elements: []
  modifiers: []
  states: []
variants:
- name: Base
  description: Standard list builder interface
  classes: []
  usage_context: Default list builder for managing selections
  differences: Two-panel interface for moving items between lists
lightning_component:
  name: lightning-dual-listbox
  url: https://developer.salesforce.com/docs/component-library/bundle/lightning-dual-listbox
  mapping_notes: lightning-dual-listbox provides similar two-list selection functionality
accessibility:
  keyboard_support:
  - Tab to navigate between lists and controls
  - Arrow keys to move through list items
  - Space to select items
  - Enter to move selected items
  - Shift+Arrow for multi-select
  screen_reader:
  - List roles announced
  - Selected item count announced
  - Move operations confirmed
  - List labels clearly announced
  aria_attributes:
  - role='listbox' on list containers
  - role='option' on list items
  - aria-label on lists and buttons
  - aria-selected on selected items
  - aria-multiselectable on lists allowing multi-select
usage_guidelines:
  when_to_use:
  - For managing permissions or access lists
  - When users need to build custom collections
  - For configuring visible fields or columns
  - When ordering and selection are both needed
  when_not_to_use:
  - For simple multi-select (use checkbox list)
  - When items don't need reordering
  - For very long lists (consider search/filter)
  - When drag-and-drop isn't appropriate
  best_practices:
  - Provide clear labels for both lists
  - Show count of items in each list
  - Support both drag-and-drop and button moves
  - Allow reordering within destination list
  - Provide search/filter for long lists
  - Show visual feedback during operations
  common_mistakes:
  - Missing keyboard support
  - Unclear which list is source vs destination
  - No way to move multiple items at once
  - Poor performance with many items
  - Missing reordering capability
code_examples:
- title: Basic List Builder
  code: "<div class=\"\">\n  <div class=\"slds-grid slds-grid_vertical-align-center\">\n    <div class=\"slds-col slds-size_5-of-12\"\
    >\n      <div class=\"slds-form-element\">\n        <label class=\"slds-form-element__label\" for=\"available-list\">Available\
    \ Items</label>\n        <div class=\"slds-form-element__control\">\n          <div class=\"\" role=\"listbox\" aria-label=\"\
    Available items\" aria-multiselectable=\"true\" id=\"available-list\">\n            <ul class=\"slds-listbox slds-listbox_vertical\"\
    >\n              <li role=\"presentation\" class=\"\">\n                <div class=\"slds-listbox__option slds-listbox__option_plain\"\
    \ role=\"option\" aria-selected=\"false\">\n                  <span class=\"slds-truncate\">Item 1</span>\n          \
    \      </div>\n              </li>\n              <li role=\"presentation\" class=\"\">\n                <div class=\"\
    slds-listbox__option slds-listbox__option_plain\" role=\"option\" aria-selected=\"false\">\n                  <span class=\"\
    slds-truncate\">Item 2</span>\n                </div>\n              </li>\n            </ul>\n          </div>\n    \
    \    </div>\n      </div>\n    </div>\n    <div class=\"slds-col slds-size_2-of-12\">\n      <div class=\"slds-grid slds-grid_vertical\
    \ slds-grid_align-center\">\n        <button class=\"slds-button slds-button_icon slds-button_icon-border\" title=\"Move\
    \ to Selected\">\n          <svg class=\"slds-button__icon\" aria-hidden=\"true\">\n            <use xlink:href=\"/assets/icons/utility-sprite/svg/symbols.svg#right\"\
    ></use>\n          </svg>\n          <span class=\"slds-assistive-text\">Move to Selected</span>\n        </button>\n\
    \        <button class=\"slds-button slds-button_icon slds-button_icon-border\" title=\"Move to Available\">\n       \
    \   <svg class=\"slds-button__icon\" aria-hidden=\"true\">\n            <use xlink:href=\"/assets/icons/utility-sprite/svg/symbols.svg#left\"\
    ></use>\n          </svg>\n          <span class=\"slds-assistive-text\">Move to Available</span>\n        </button>\n\
    \      </div>\n    </div>\n    <div class=\"slds-col slds-size_5-of-12\">\n      <div class=\"slds-form-element\">\n \
    \       <label class=\"slds-form-element__label\" for=\"selected-list\">Selected Items</label>\n        <div class=\"\
    slds-form-element__control\">\n          <div class=\"\" role=\"listbox\" aria-label=\"Selected items\" aria-multiselectable=\"\
    true\" id=\"selected-list\">\n            <ul class=\"slds-listbox slds-listbox_vertical\">\n              <li role=\"\
    presentation\" class=\"\">\n                <div class=\"slds-listbox__option slds-listbox__option_plain\" role=\"option\"\
    \ aria-selected=\"false\">\n                  <span class=\"slds-truncate\">Item 3</span>\n                </div>\n  \
    \            </li>\n            </ul>\n          </div>\n        </div>\n      </div>\n    </div>\n  </div>\n</div>\n"
  description: Two-panel list builder with move buttons
styling_hooks: []
dependencies:
  css_files:
  - list-builder.css
  - listbox.css
  - button.css
  javascript:
  - Item selection management
  - Move operations
  - Drag-and-drop handling
  - Reordering logic
  icons:
  - utility:right
  - utility:left
  - utility:up
  - utility:down
  other_components:
  - listbox
  - button
  - form-element
related_components:
- name: Dual Listbox
  relationship: alternative
  description: Lightning component alternative
- name: Picklist
  relationship: similar
  description: Simpler selection pattern
- name: Dueling Picklist
  relationship: similar
  description: SLDS version of dual-listbox pattern
references:
  official_docs: https://v1.lightningdesignsystem.com/components/list-builder/
metadata:
  version: 1.0.0
  last_updated: '2025-11-11'
  author: SLDS Documentation Team
  slds_version: 2.27.2
  review_status: complete
  source: official-slds
  notes: Created from official SLDS documentation and design-system-internal source code