feat: Add custom size props to modal

build-tools/utils/custom-css-properties.js

@@ -50,6 +50,9 @@ const customCssPropertiesList = [
   'stackedNotificationsDefaultBottomMargin',
   // Dropdown Custom Properties
   'dropdownDefaultMaxWidth',
+  // Modal Custom Properties
+  'modalCustomWidth',
+  'modalCustomHeight',
   // Spinner Custom Properties
   'spinnerRotatorFrom',
   'spinnerRotatorTo',

pages/modal/playground.page.tsx

@@ -0,0 +1,149 @@
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+import React, { useState } from 'react';
+
+import Box from '~components/box';
+import Button from '~components/button';
+import Checkbox from '~components/checkbox';
+import FormField from '~components/form-field';
+import Input from '~components/input';
+import Modal from '~components/modal';
+import Select from '~components/select';
+import SpaceBetween from '~components/space-between';
+
+export default function ModalPlayground() {
+  const [visible, setVisible] = useState(false);
+  const [size, setSize] = useState<'small' | 'medium' | 'large' | 'x-large' | 'xx-large' | 'max'>('medium');
+  const [position, setPosition] = useState<'center' | 'top'>('center');
+  const [width, setWidth] = useState('');
+  const [height, setHeight] = useState('');
+  const [disableContentPaddings, setDisableContentPaddings] = useState(false);
+  const [contentLines, setContentLines] = useState(10);
+  const [hasFooter, setHasFooter] = useState(true);
+  const [headerText, setHeaderText] = useState('Modal Playground');
+  const [closeAriaLabel, setCloseAriaLabel] = useState('');
+
+  return (
+    <Box padding="l">
+      <SpaceBetween size="l">
+        <h1>Modal Playground</h1>
+
+        <SpaceBetween size="m">
+          <FormField label="Size">
+            <Select
+              selectedOption={{ value: size }}
+              onChange={({ detail }) => setSize(detail.selectedOption.value as any)}
+              options={[
+                { value: 'small', label: 'small' },
+                { value: 'medium', label: 'medium' },
+                { value: 'large', label: 'large' },
+                { value: 'x-large', label: 'X-Large' },
+                { value: 'xx-large', label: 'XX-Large' },
+                { value: 'max', label: 'max' },
+              ]}
+            />
+          </FormField>
+
+          <FormField label="Position">
+            <Select
+              selectedOption={{ value: position }}
+              onChange={({ detail }) => setPosition(detail.selectedOption.value as any)}
+              options={[
+                { value: 'center', label: 'Center' },
+                { value: 'top', label: 'Top' },
+              ]}
+            />
+          </FormField>
+
+          <FormField label="Header Text">
+            <Input value={headerText} onChange={({ detail }) => setHeaderText(detail.value)} />
+          </FormField>
+
+          <FormField label="Close Aria Label">
+            <Input
+              value={closeAriaLabel}
+              onChange={({ detail }) => setCloseAriaLabel(detail.value)}
+              placeholder="Default: Close modal"
+            />
+          </FormField>
+
+          <FormField label="Custom Width (px)">
+            <Input
+              value={width}
+              onChange={({ detail }) => setWidth(detail.value)}
+              placeholder="Leave empty for default"
+              type="number"
+            />
+          </FormField>
+
+          <FormField label="Custom Height (px)">
+            <Input
+              value={height}
+              onChange={({ detail }) => setHeight(detail.value)}
+              placeholder="Leave empty for default"
+              type="number"
+            />
+          </FormField>
+
+          <FormField label="Content Lines">
+            <Input
+              value={String(contentLines)}
+              onChange={({ detail }) => setContentLines(Number(detail.value) || 10)}
+              type="number"
+            />
+          </FormField>
+
+          <Checkbox
+            checked={disableContentPaddings}
+            onChange={({ detail }) => setDisableContentPaddings(detail.checked)}
+          >
+            Disable content paddings
+          </Checkbox>
+
+          <Checkbox checked={hasFooter} onChange={({ detail }) => setHasFooter(detail.checked)}>
+            Show footer
+          </Checkbox>
+
+          <Button variant="primary" onClick={() => setVisible(true)}>
+            Open Modal
+          </Button>
+        </SpaceBetween>
+
+        <Modal
+          visible={visible}
+          onDismiss={() => setVisible(false)}
+          size={size}
+          position={position}
+          width={width ? Number(width) : undefined}
+          height={height ? Number(height) : undefined}
+          disableContentPaddings={disableContentPaddings}
+          closeAriaLabel={closeAriaLabel || undefined}
+          header={headerText}
+          footer={
+            hasFooter ? (
+              <Box float="right">
+                <SpaceBetween direction="horizontal" size="xs">
+                  <Button variant="link" onClick={() => setVisible(false)}>
+                    Cancel
+                  </Button>
+                  <Button variant="primary" onClick={() => setVisible(false)}>
+                    Confirm
+                  </Button>
+                </SpaceBetween>
+              </Box>
+            ) : undefined
+          }
+        >
+          <SpaceBetween size="m">
+            {Array.from({ length: contentLines }, (_, i) => (
+              <Box key={i}>
+                Line {i + 1}: Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt
+                ut labore et dolore magna aliqua.
+              </Box>
+            ))}
+          </SpaceBetween>
+        </Modal>
+      </SpaceBetween>
+    </Box>
+  );
+}

src/__tests__/snapshot-tests/__snapshots__/documenter.test.ts.snap

@@ -17503,6 +17503,13 @@ The function will be called when a user clicks on the trigger button.",
       "optional": true,
       "type": "((options: { abortSignal: AbortSignal; }) => Promise<HTMLElement>)",
     },
+    {
+      "description": "Specifies the height of the modal. When provided, the modal content becomes scrollable if it exceeds the specified height.
+If the specified height exceeds available viewport space, the modal will use the maximum available space.",
+      "name": "height",
+      "optional": true,
+      "type": "number",
+    },
     {
       "deprecatedTag": "The usage of the \`id\` attribute is reserved for internal use cases. For testing and other use cases,
 use [data attributes](https://developer.mozilla.org/en-US/docs/Learn/HTML/Howto/Use_data_attributes). If you must
@@ -17520,6 +17527,28 @@ render to an element under \`document.body\`.",
       "optional": true,
       "type": "HTMLElement",
     },
+    {
+      "defaultValue": "'center'",
+      "description": "Controls the vertical positioning of the modal.
+
+- \`center\` (default) - Modal is vertically centered in viewport and re-centers
+  when content height changes. Use for dialogs with static, predictable content.
+
+- \`top\` - Modal anchors at fixed distance and grows downward
+  as content expands. Use when content changes dynamically to prevent disruptive
+  vertical repositioning that causes users to lose focus.",
+      "inlineType": {
+        "name": "ModalProps.Position",
+        "type": "union",
+        "values": [
+          "center",
+          "top",
+        ],
+      },
+      "name": "position",
+      "optional": true,
+      "type": "string",
+    },
     {
       "description": "Use this property when \`getModalRoot\` is used to clean up the modal root
 element after a user closes the dialog. The function receives the return value
@@ -17542,8 +17571,8 @@ of the most recent getModalRoot call as an argument.",
     {
       "defaultValue": "'medium'",
       "description": "Sets the width of the modal. \`max\` uses variable width up to the
-largest size allowed by the design guidelines. Other sizes
-(\`small\`/\`medium\`/\`large\`) have fixed widths.",
+largest size allowed by the design guidelines. Other sizes:
+\`small\` (320px), \`medium\` (600px), \`large\` (820px), \`x-large\` (1024px), \`xx-large\` (1280px).",
       "inlineType": {
         "name": "ModalProps.Size",
         "type": "union",
@@ -17552,6 +17581,8 @@ largest size allowed by the design guidelines. Other sizes
           "max",
           "medium",
           "large",
+          "x-large",
+          "xx-large",
         ],
       },
       "name": "size",
@@ -17565,6 +17596,13 @@ Set this property to \`true\` to show them.",
       "optional": false,
       "type": "boolean",
     },
+    {
+      "description": "Specifies the width of the modal. When provided, takes precedence over the \`size\` property.
+If the specified width exceeds available viewport space, the modal will use the maximum available space.",
+      "name": "width",
+      "optional": true,
+      "type": "number",
+    },
   ],
   "regions": [
     {