Add affordance to icon selector in docs and fix selection state

packages/core/src/components/menu/menuItem.tsx

@@ -127,10 +127,9 @@ export interface MenuItemProps
     popoverProps?: Partial<Omit<PopoverProps, "content" | "minimal">>;
 
     /**
-     * Whether this item should appear selected.
-     * Defining this  will set the `aria-selected` attribute and apply a
-     * "check" or "blank" icon on the item (unless the `icon` prop is set,
-     * which always takes precedence).
+     * Whether this item should appear selected - `roleStructure` must be `"listoption"` for this to be
+     * applied. Defining this will set the `aria-selected` attribute and apply a small tick icon if `true`,
+     * and empty space for a small tick icon if `false` or `undefined`.
      *
      * @default undefined
      */

packages/docs-app/src/examples/core-examples/common/iconNames.ts

@@ -16,14 +16,10 @@
 
 import { type IconName, IconNames } from "@blueprintjs/icons";
 
-export const NONE = "(none)";
-export type IconNameOrNone = IconName | typeof NONE;
-
-export function getIconNames(): IconNameOrNone[] {
-    const iconNames = new Set<IconNameOrNone>();
+export function getIconNames(): IconName[] {
+    const iconNames = new Set<IconName>();
     for (const [, name] of Object.entries(IconNames)) {
         iconNames.add(name);
     }
-    iconNames.add(NONE);
     return Array.from(iconNames.values());
 }

packages/docs-app/src/examples/core-examples/common/iconSelect.tsx

@@ -21,7 +21,7 @@ import { Alignment, Button, Classes, MenuItem } from "@blueprintjs/core";
 import type { IconName } from "@blueprintjs/icons";
 import { type ItemRenderer, Select } from "@blueprintjs/select";
 
-import { getIconNames, type IconNameOrNone, NONE } from "./iconNames";
+import { getIconNames } from "./iconNames";
 
 const ICON_NAMES = getIconNames();
 
@@ -35,39 +35,42 @@ export class IconSelect extends React.PureComponent<IconSelectProps> {
     public render() {
         const { disabled, iconName } = this.props;
         return (
-            <label className={classNames(Classes.LABEL, { [Classes.DISABLED]: disabled })}>
+            <label className={classNames("icon-select", Classes.LABEL, { [Classes.DISABLED]: disabled })}>
                 Icon
-                <Select<IconNameOrNone>
+                <Select<IconName>
                     disabled={disabled}
                     items={ICON_NAMES}
                     itemPredicate={this.filterIconName}
                     itemRenderer={this.renderIconItem}
                     noResults={<MenuItem disabled={true} text="No results" />}
+                    placeholder="Start typing to search…"
                     onItemSelect={this.handleIconChange}
                     popoverProps={{ minimal: true }}
                 >
                     <Button
                         alignText={Alignment.LEFT}
-                        className={Classes.TEXT_OVERFLOW_ELLIPSIS}
+                        textClassName={Classes.TEXT_OVERFLOW_ELLIPSIS}
                         disabled={disabled}
                         fill={true}
                         icon={iconName}
-                        text={iconName || NONE}
+                        text={iconName || "None"}
                         rightIcon="caret-down"
                     />
                 </Select>
             </label>
         );
     }
 
-    private renderIconItem: ItemRenderer<IconName | typeof NONE> = (icon, { handleClick, handleFocus, modifiers }) => {
+    private renderIconItem: ItemRenderer<IconName | undefined> = (icon, { handleClick, handleFocus, modifiers }) => {
         if (!modifiers.matchesPredicate) {
             return null;
         }
         return (
             <MenuItem
-                selected={modifiers.active}
-                icon={icon === NONE ? undefined : icon}
+                roleStructure="listoption"
+                active={modifiers.active}
+                selected={this.props.iconName === icon}
+                icon={icon}
                 key={icon}
                 onClick={handleClick}
                 onFocus={handleFocus}
@@ -76,15 +79,14 @@ export class IconSelect extends React.PureComponent<IconSelectProps> {
         );
     };
 
-    private filterIconName = (query: string, iconName: IconName | typeof NONE) => {
-        if (iconName === NONE) {
-            return true;
-        }
+    private filterIconName = (query: string, iconName: IconName | undefined) => {
         if (query === "") {
             return iconName === this.props.iconName;
         }
         return iconName.toLowerCase().indexOf(query.toLowerCase()) >= 0;
     };
 
-    private handleIconChange = (icon: IconNameOrNone) => this.props.onChange(icon === NONE ? undefined : icon);
+    private handleIconChange = (icon: IconName) => {
+        this.props.onChange(icon === this.props.iconName ? undefined : icon);
+    };
 }

packages/docs-app/src/styles/_examples.scss

@@ -683,6 +683,10 @@ $docs-hotkey-piano-height: 510px;
   flex-direction: row;
 }
 
+.icon-select {
+  width: 170px;
+}
+
 //
 // DATETIME2
 //

packages/select/src/components/select/select.tsx

@@ -81,6 +81,14 @@ export interface SelectProps<T> extends ListItemsProps<T>, SelectPopoverProps {
      */
     menuProps?: React.HTMLAttributes<HTMLUListElement>;
 
+    /**
+     * A placeholder string passed to the filter text input.
+     * Applicable only when `filterable` is `true`.
+     *
+     * @default "Filter..."
+     */
+    placeholder?: string;
+
     /**
      * Whether the active item should be reset to the first matching item _when
      * the popover closes_. The query will also be reset to the empty string.
@@ -159,6 +167,7 @@ export class Select<T> extends AbstractPureComponent<SelectProps<T>, SelectState
             filterable = true,
             disabled = false,
             inputProps = {},
+            placeholder = "Filter...",
             popoverContentProps = {},
             popoverProps = {},
             popoverRef,
@@ -168,7 +177,7 @@ export class Select<T> extends AbstractPureComponent<SelectProps<T>, SelectState
             <InputGroup
                 aria-autocomplete="list"
                 leftIcon={<Search />}
-                placeholder="Filter..."
+                placeholder={placeholder}
                 rightElement={this.maybeRenderClearButton(listProps.query)}
                 {...inputProps}
                 inputRef={this.handleInputRef}