Improved DropdownSelector component

src/components/Autocomplete/Autocomplete.tsx

@@ -234,6 +234,7 @@ const Autocomplete: FC<AutocompleteProps> = ({
           }}
           open={isOpen}
           anchorEl={anchorEl}
+          useAnchorWidth
         />
       </Box>
     </InputContainer>

src/components/DropdownSelector/DropdownSelector.stories.tsx

@@ -0,0 +1,80 @@
+// This file is part of MinIO Design System
+// Copyright (c) 2023 MinIO, Inc.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import React, { useState } from "react";
+import { Meta, Story } from "@storybook/react";
+
+import DropdownSelector from "./DropdownSelector";
+import { DropdownSelectorProps } from "./DropdownSelector.types";
+
+import StoryThemeProvider from "../../utils/StoryThemeProvider";
+import GlobalStyles from "../GlobalStyles/GlobalStyles";
+import Box from "../Box/Box";
+import Button from "../Button/Button";
+import TestIcon from "../../utils/TestIcon";
+
+export default {
+  title: "MDS/Forms/DropdownSelector",
+  component: DropdownSelector,
+  argTypes: {},
+} as Meta<typeof DropdownSelector>;
+
+const Template: Story<DropdownSelectorProps> = (args) => {
+  const [anchorEl, setAnchorEl] = React.useState<null | HTMLElement>(null);
+  const openDownloadMenu = Boolean(anchorEl);
+
+  const handleCloseDownload = () => {
+    setAnchorEl(null);
+  };
+
+  return (
+    <StoryThemeProvider>
+      <GlobalStyles />
+      <Button
+        id={"test-button"}
+        onClick={(e) => {
+          setAnchorEl(e.currentTarget);
+        }}
+        icon={<TestIcon />}
+      />
+      <DropdownSelector
+        open={openDownloadMenu}
+        anchorEl={anchorEl}
+        hideTriggerAction={() => {
+          handleCloseDownload();
+        }}
+        {...args}
+      />
+    </StoryThemeProvider>
+  );
+};
+
+export const Default = Template.bind({});
+Default.args = {
+  options: [
+    { label: "Test Label 1", value: "tl1" },
+    { label: "Test Label 2", value: "tl2" },
+  ],
+};
+
+export const AnchorEnd = Template.bind({});
+AnchorEnd.args = {
+  options: [
+    { label: "Test Label 1", value: "tl1" },
+    { label: "Test Label 2", value: "tl2" },
+  ],
+  anchorOrigin: "end",
+};

src/components/DropdownSelector/DropdownSelector.tsx

@@ -36,72 +36,78 @@ const SelectorContainer = styled.div(({}) => ({
   overscrollBehavior: "contain",
 }));
 
-const DropdownBlock = styled.div<DropDownBlockProps>(({ theme, sx }) => ({
-  position: "absolute",
-  display: "flex",
-  backgroundColor: get(theme, "dropdownSelector.backgroundColor", "#fff"),
-  border: `1px solid ${get(theme, "borderColor", "#E2E2E2")}`,
-  padding: "10px 0",
-  maxHeight: 450,
-  minWidth: 150,
-  overflowY: "auto",
-  borderRadius: 4,
-  boxShadow:
-    "rgba(0, 0, 0, 0.2) 0px 11px 15px -7px, rgba(0, 0, 0, 0.14) 0px 24px 38px 3px, rgba(0, 0, 0, 0.12) 0px 9px 46px 8px",
-  "& ul": {
-    padding: 0,
-    margin: 0,
+const DropdownBlock = styled.div<DropDownBlockProps>(
+  ({ theme, sx, useAnchorWidth }) => ({
+    position: "absolute",
     display: "flex",
-    flexDirection: "column",
-    width: "100%",
-    "& > li": {
-      cursor: "pointer",
-      listStyle: "none",
-      width: "100%",
-      color: get(theme, "dropdownSelector.optionTextColor", "#000"),
-      padding: "6px 15px",
-      fontSize: 14,
-      userSelect: "none",
+    backgroundColor: get(theme, "dropdownSelector.backgroundColor", "#fff"),
+    border: `1px solid ${get(theme, "borderColor", "#E2E2E2")}`,
+    padding: "10px 0",
+    maxHeight: 450,
+    minWidth: useAnchorWidth ? 150 : 0,
+    overflowY: "auto",
+    borderRadius: 4,
+    boxShadow:
+      "rgba(0, 0, 0, 0.2) 0px 11px 15px -7px, rgba(0, 0, 0, 0.14) 0px 24px 38px 3px, rgba(0, 0, 0, 0.12) 0px 9px 46px 8px",
+    "& ul": {
+      padding: 0,
+      margin: 0,
       display: "flex",
-      alignItems: "center",
-      gap: 10,
-      "& svg": {
-        width: 16,
-        height: 16,
-      },
-      '&:not([class*="Mui"])::before': {
-        content: "' '",
-      },
-      "&.selected": {
-        backgroundColor: get(
-          theme,
-          "dropdownSelector.selectedBGColor",
-          "#D5D7D8",
-        ),
+      flexDirection: "column",
+      width: "100%",
+      "& > li": {
+        cursor: "pointer",
+        listStyle: "none",
+        width: "100%",
         color: get(theme, "dropdownSelector.optionTextColor", "#000"),
-      },
-      "&.disabled": {
-        cursor: "not-allowed",
-        color: get(theme, "dropdownSelector.disabledText", "#E6EBEB"),
-        "&:hover": {
+        padding: "6px 15px",
+        fontSize: 14,
+        userSelect: "none",
+        display: "flex",
+        alignItems: "center",
+        gap: 10,
+        "& svg": {
+          width: 16,
+          height: 16,
+        },
+        '&:not([class*="Mui"])::before': {
+          content: "' '",
+        },
+        "&.selected": {
           backgroundColor: get(
             theme,
-            "dropdownSelector.backgroundColor",
-            "#fff",
+            "dropdownSelector.selectedBGColor",
+            "#D5D7D8",
           ),
+          color: get(theme, "dropdownSelector.optionTextColor", "#000"),
+        },
+        "&.disabled": {
+          cursor: "not-allowed",
           color: get(theme, "dropdownSelector.disabledText", "#E6EBEB"),
+          "&:hover": {
+            backgroundColor: get(
+              theme,
+              "dropdownSelector.backgroundColor",
+              "#fff",
+            ),
+            color: get(theme, "dropdownSelector.disabledText", "#E6EBEB"),
+          },
+        },
+        "&.hovered:not(.disabled)": {
+          backgroundColor: get(theme, "dropdownSelector.hoverBG", "#E6EAEB"),
+          color: get(theme, "dropdownSelector.hoverText", "#000"),
         },
-      },
-      "&.hovered:not(.disabled)": {
-        backgroundColor: get(theme, "dropdownSelector.hoverBG", "#E6EAEB"),
-        color: get(theme, "dropdownSelector.hoverText", "#000"),
       },
     },
-  },
-  ...sx,
-}));
-
-const calcElementPosition = (anchorEl: (EventTarget & HTMLElement) | null) => {
+    ...sx,
+  }),
+);
+
+const calcElementPosition = (
+  anchorEl: (EventTarget & HTMLElement) | null,
+  anchorOrigin: "start" | "end",
+  useAnchorWidth: boolean,
+) => {
   if (!anchorEl) {
     return {
       top: 0,
@@ -112,11 +118,21 @@ const calcElementPosition = (anchorEl: (EventTarget & HTMLElement) | null) => {
 
   const bounds = anchorEl.getBoundingClientRect();
 
-  return {
-    top: bounds.top + bounds.height,
-    left: bounds.left,
-    width: bounds.width,
-  };
+  let returnItem: CSSObject = { top: bounds.top + bounds.height };
+
+  if (anchorOrigin === "start") {
+    returnItem.left = bounds.left;
+    returnItem.transform = "translateX(0%)";
+  } else if (anchorOrigin === "end") {
+    returnItem.left = bounds.left + bounds.width;
+    returnItem.transform = "translateX(-100%)";
+  }
+
+  if (useAnchorWidth) {
+    returnItem.width = bounds.width;
+  }
+
+  return returnItem;
 };
 
 const DropdownSelector: FC<DropdownSelectorProps> = ({
@@ -127,6 +143,8 @@ const DropdownSelector: FC<DropdownSelectorProps> = ({
   hideTriggerAction,
   open,
   anchorEl = null,
+  useAnchorWidth = false,
+  anchorOrigin = "start",
 }) => {
   const [coords, setCoords] = useState<CSSObject | null>(null);
   const [indexHover, setIndexHover] = useState<number>(0);
@@ -166,7 +184,7 @@ const DropdownSelector: FC<DropdownSelectorProps> = ({
 
   useEffect(() => {
     if (open) {
-      setCoords(calcElementPosition(anchorEl));
+      setCoords(calcElementPosition(anchorEl, anchorOrigin, useAnchorWidth));
       return;
     }
     setCoords(null);
@@ -181,7 +199,7 @@ const DropdownSelector: FC<DropdownSelectorProps> = ({
       if (!anchorEl || !anchorEl.getBoundingClientRect()) {
         return;
       }
-      setCoords(calcElementPosition(anchorEl));
+      setCoords(calcElementPosition(anchorEl, anchorOrigin, useAnchorWidth));
     }, 300);
 
     window.addEventListener("resize", handleResize);
@@ -202,7 +220,7 @@ const DropdownSelector: FC<DropdownSelectorProps> = ({
 
   return createPortal(
     <SelectorContainer onClick={hideTriggerAction}>
-      <DropdownBlock id={id} sx={coords}>
+      <DropdownBlock id={id} sx={coords} useAnchorWidth={useAnchorWidth}>
         <ul>
           {options.map((option, index) => {
             return (

src/components/DropdownSelector/DropdownSelector.types.ts

@@ -25,8 +25,11 @@ export interface DropdownSelectorProps {
   hideTriggerAction: () => void;
   open: boolean;
   anchorEl?: (EventTarget & HTMLElement) | null;
+  anchorOrigin?: "start" | "end";
+  useAnchorWidth?: boolean;
 }
 
 export interface DropDownBlockProps {
+  useAnchorWidth: boolean;
   sx: CSSObject;
 }

src/components/Select/Select.tsx

@@ -208,6 +208,7 @@ const Select: FC<SelectProps> = ({
           }}
           open={isOpen}
           anchorEl={anchorEl}
+          useAnchorWidth
         />
       </Box>
     </InputContainer>