Fix UI

packages/ui/src/components/preview-source/preview-source.module.css

@@ -7,6 +7,8 @@
   z-index: 2;
   top: var(--space-xsmall);
   right: var(--space-xsmall);
+  background: var(--color-background);
+  border-radius: var(--radius-medium);
 }
 
 /** fix control group with nested components */
@@ -21,8 +23,18 @@
   box-shadow: none;
 }
 
+/** Source content */
 .content {
   position: relative;
   z-index: 1;
   height: 100%;
+  background: var(--color-highlight);
+  color: var(--color-text);
+}
+
+/** Empty / loading state */
+.isEmpty .content {
+  pointer-events: none;
+  background: var(--skeleton-block-background);
+  opacity: var(--skeleton-opacity);
 }

packages/ui/src/components/preview-source/preview-source.stories.tsx

@@ -33,3 +33,9 @@ export const Default: Story = {
     download: 'bundle-stats--assets.json',
   },
 };
+
+export const Empty: Story = {
+  args: {
+    download: 'bundle-stats--assets.json',
+  },
+};

packages/ui/src/components/preview-source/preview-source.tsx

@@ -9,8 +9,14 @@ import { Tooltip } from '../../ui/tooltip';
 import { Textarea } from '../../ui/textarea';
 import css from './preview-source.module.css';
 
+const DEFAULT_ROWS = 10;
+
 type PreviewSourceProps = {
-  source: string;
+  source?: string;
+  /**
+   * Textarea rows
+   */
+  rows?: number;
   /**
    * Link download attribute
    * @example
@@ -20,26 +26,31 @@ type PreviewSourceProps = {
 } & ComponentProps<'div'>;
 
 export const PreviewSource = (props: PreviewSourceProps) => {
-  const { className = '', source, download = false, ...restProps } = props;
+  const { className = '', source, rows = DEFAULT_ROWS, download = false, ...restProps } = props;
+
+  const isEmpty = !source;
+  const rootClassName = cx(css.root, className, isEmpty && css.isEmpty);
 
   return (
-    <div className={cx(css.root, className)} {...restProps}>
-      <ControlGroup className={css.toolbar}>
-        <CopyToClipboard outline size="small" text={source} />
-        {download && (
-          <Tooltip title={`Download ${download}`} className={css.downloadTooltip}>
-            <Button
-              outline
-              rightGlyph={BUTTON_GLYPHS.DOWNLOAD}
-              size="small"
-              as="a"
-              href={`data:application/json,${encodeURIComponent(source)}`}
-              download={download}
-            />
-          </Tooltip>
-        )}
-      </ControlGroup>
-      <Textarea previewSource readOnly rows={12} className={css.content}>
+    <div className={rootClassName} {...restProps}>
+      {source && (
+        <ControlGroup className={css.toolbar}>
+          <CopyToClipboard outline size="small" text={source} />
+          {download && (
+            <Tooltip title={`Download ${download}`} className={css.downloadTooltip}>
+              <Button
+                outline
+                rightGlyph={BUTTON_GLYPHS.DOWNLOAD}
+                size="small"
+                as="a"
+                href={`data:application/json,${encodeURIComponent(source)}`}
+                download={download}
+              />
+            </Tooltip>
+          )}
+        </ControlGroup>
+      )}
+      <Textarea previewSource readOnly rows={rows} className={css.content}>
         {source}
       </Textarea>
     </div>

packages/ui/src/css/variables.css

@@ -201,6 +201,10 @@
 
   --outline-hover: 0 0 0 var(--space-xxxsmall) var(--color-highlight);
 
+  --skeleton-inline-background: linear-gradient(transparent 10%, currentColor 10.1%, currentColor 89.9%, transparent 90%);
+  --skeleton-block-background: currentColor;
+  --skeleton-opacity: 0.06;
+
   /** Layout */
   --max-width: 88rem;
   --entry-info-width: 64rem;

packages/ui/src/ui/dialog/dialog.module.css

@@ -61,19 +61,19 @@
 
 /** Width variation */
 .width--narrow {
-  max-width: 480px;
+  max-width: 360px;
 }
 
 .width--medium {
-  max-width: 748px;
+  max-width: 640px;
 }
 
 .width--wide {
   max-width: 1024px;
 }
 
 .width--extra-wide {
-  max-width: var(--max-width);
+  max-width: calc(var(--max-width) + 2 * var(--space-medium));
 }
 
 /** Center variation */

packages/ui/src/ui/skeleton/skeleton.module.css

@@ -1,6 +1,6 @@
 .root {
-  background: linear-gradient(transparent 10%, currentColor 10.1%, currentColor 89.9%, transparent 90%);
-  opacity: 0.05;
+  background: var(--skeleton-inline-background);
+  opacity: var(--skeleton-opacity);
   pointer-events: none;
   min-width: 6em;
   border-radius: var(--radius-medium);
@@ -14,5 +14,5 @@
 }
 
 .block {
-  background: currentColor;
+  background: var(--skeleton-block-background);
 }