@salesforce-ux/design-system/__internal/chunked/docs/ui/components/tree-grid/docs.mdx.js

Salesforce Lightning Design System

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A branch can be expanded or collapsed."),Object(n.createElement)(s.a,{exampleOnly:!0,demoStyles:"height: 12rem;"},f),j({id:"About-Tree-Grid"},"About Tree Grid"),D({},"A tree grid is additional semantics that are laid on top of a grid based component via ARIA attributes, to enable hierarchically structured tabular data."),D({},"The tree grid comes with a very specific keyboard interaction model which ",T({},"must")," be implemented for the component to be screen reader accessible."),H({id:"Accessibility"},"Accessibility"),N({id:"Markup"},"Markup"),W({},k({},I({},'role="treegrid"')," should be applied to the ",I({},"table")," element"),k({},I({},'aria-readonly="true"')," should be applied to the ",I({},"table")," element"),k({},I({},'aria-level="n"')," where ",I({},"n")," represents the nesting level of a particular grid row, should be applied to the ",I({},"tr")," element"),k({},I({},'aria-setsize="n"')," where ",I({},"n")," is the number of items for that specific ",I({},"aria-level")," should be applied to the ",I({},"tr")," element"),k({},I({},'aria-posinset="n"')," where ",I({},"n")," represents the position in the ",I({},"aria-level")," set the row is placed at, should be applied to the ",I({},"tr")," element"),k({},I({},'aria-expanded="false"')," should be placed on rows that are collapsed and have child rows"),k({},I({},'aria-expanded="true"')," should be placed on rows that are expanded and have child rows"),k({},I({},'tabindex="0"')," should be placed on the first ",I({},"tr")," in the grid on load, to make the row focusable"),k({},"Every actionable element in the grid should have ",I({},'tabindex="-1"')," applied to make them not focusable in the grids navigation mode")),D({},T({},"Multi select tree grid:")),W({},k({},I({},'aria-multiselectable="true"')," should be placed on the ",I({},"table")," element"),k({},I({},'aria-selected="false"')," should be set by default on all ",I({},"tr")," elements that aren't selected"),k({},I({},'aria-selected="true"')," should be set only on the ",I({},"tr")," elements that are selected")),D({},T({},"Single Select tree grid:")),W({},k({},I({},'aria-selected="true"')," should be applied to the ",I({},"tr")," that is selected in the tree grid")),N({id:"Keyboard-Interactions"},"Keyboard Interactions"),W({},k({},"Overall keyboard interaction should follow the same keyboard modal as the ",A({href:"/components/data-tables"},"Advanced and Inline Edit Data Table")," with some additions",W({},k({},"Navigation mode is the default mode. The grid only has a single focusable element at any time and it is either the ",I({},"tr")," or the ",I({},"td")),k({},"Actionable mode is enabled when the user presses the ",I({},"Enter")," key, where actionable elements become focusable in the cell"),k({},"Actionable mode is exited when the user presses the ",I({},"Escape")," key, and the user is placed back into Navigation Mode on the last cell they were in"))),k({},"User focus is initially placed on the first row in the tree grid"),k({},I({},"Down")," arrow key moves the user down one row and moves ",I({},'tabindex="0"')," with it"),k({},I({},"Up")," arrow key moves the user up one row and moves ",I({},'tabindex="0"')," with it"),k({},I({},"Space")," key when focused on a row should select that row by setting ",I({},'aria-selected="true')," on the ",I({},"tr")," element"),k({},I({},"Right")," arrow key on a collapsed row, will expand it and update ",I({},"aria-expanded")),k({},I({},"Right")," arrow key on an expanded or end row will move the user to the first cell in the row and move ",I({},'tabindex="0"')," with it"),k({},I({},"Right")," arrow key on a cell will move the user to the next cell in the row and move ",I({},'tabindex="0"')," with it"),k({},I({},"Left")," arrow key on a collapsed or end row will move the user to it's parent row and collapse it, if it has one"),k({},I({},"Left")," arrow key on an expanded row will collapse it and update ",I({},"aria-expanded")),k({},I({},"Left")," arrow key on a cell will move the user to the previous cell in the row and moves ",I({},'tabindex="0"')," with it"),k({},I({},"Left")," arrow key on the first cell of a row will move the user back to the row  and moves ",I({},'tabindex="0"')," with it")),j({id:"Base"},"Base"),Object(n.createElement)(s.a,null,f),H({id:"States"},"States"),N({id:"Expanded"},"Expanded"),Object(n.createElement)(s.a,null,Object(O.e)(R,"expanded")),N({id:"Selected-row"},"Selected row"),Object(n.createElement)(s.a,null,Object(O.e)(R,"selected-row")),N({id:"Deeply-nested-branches"},"Deeply nested branches"),Object(n.createElement)(s.a,null,Object(O.e)(R,"deep-nesting")),j({id:"Examples"},"Examples"),H({id:"Headless"},"Headless"),Object(n.createElement)(s.a,null,Object(O.e)(L,"treegrid-headless")),H({id:"Headless-with-selected-row"},"Headless with selected row"),Object(n.createElement)(s.a,null,Object(O.e)(L,"treegrid-headless-selected-row")),H({id:"Headless-with-no-borders"},"Headless with no borders"),Object(n.createElement)(s.a,null,Object(O.e)(L,"treegrid-headless-no-borders")),H({id:"Headless-with-no-borders-and-a-selected-row"},"Headless with no borders and a selected row"),Object(n.createElement)(s.a,null,Object(O.e)(L,"treegrid-headless-no-borders-selected-row")),H({id:"Single-select"},"Single select"),Object(n.createElement)(s.a,null,Object(O.e)(L,"treegrid-single-select")),H({id:"Single-select-with-a-selected-row"},"Single select with a selected row"),Object(n.createElement)(s.a,null,Object(O.e)(L,"treegrid-single-select-selected-row")),H({id:"Single-select-headless"},"Single select headless"),Object(n.createElement)(s.a,null,Object(O.e)(L,"treegrid-single-select-headless")),H({id:"Single-select-headless-with-selected-row"},"Single select headless with selected row"),Object(n.createElement)(s.a,null,Object(O.e)(L,"treegrid-single-select-headless-selected")),H({id:"Single-select-headless-with-no-borders"},"Single select headless with no borders"),Object(n.createElement)(s.a,null,Object(O.e)(L,"treegrid-single-select-headless-no-borders")),H({id:"Single-select-headless-with-no-borders-and-a-selected-row"},"Single select headless with no borders and a selected row"),Object(n.createElement)(s.a,null,Object(O.e)(L,"treegrid-single-select-headless-no-borders-with-selected")),j({id:"Modifiers"},"Modifiers"),H({id:"Interaction"},"Interaction"),N({id:"Item-Disabled"},"Item Disabled"),D({},"When a branch doesn't have children, apply ",I({},"slds-is-disabled")," to the corresponding ",I({},"slds-button_icon")," element."),Object(n.createElement)(s.a,null,Object(O.e)(L,"item-disabled")),N({id:"Item-Hovered"},"Item Hovered"),D({},"When a tree item is hovered, apply ",I({},"slds-is-hovered")," to ",I({},"slds-tree__item")," element`."),Object(n.createElement)(s.a,null,Object(O.e)(L,"item-hovered")))},_=function(){return Object(i.a)(C())}}});