initial commit

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diff --git a/src/theme/Admonition.js b/src/theme/Admonition.js
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+import React from 'react';
+import Admonition from './Admonition';
+
+export default function AdmonitionWrapper(props) {
+  return <Admonition {...props} />;
+}
diff --git a/src/theme/Admonition/Layout/index.js b/src/theme/Admonition/Layout/index.js
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+++ b/src/theme/Admonition/Layout/index.js
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+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+import React from 'react';
+import clsx from 'clsx';
+import { ThemeClassNames } from '@docusaurus/theme-common';
+import admonitionStyles from '@docusaurus/theme-classic/lib/theme/Admonition/Layout/styles.module.css';
+import headingStyles from '@docusaurus/theme-classic/lib/theme/Heading/styles.module.css';
+
+function AdmonitionContainer({type, className, children}) {
+  return (
+    <div
+      className={clsx(
+        ThemeClassNames.common.admonition,
+        ThemeClassNames.common.admonitionType(type),
+        admonitionStyles.admonition,
+        className,
+      )}
+      >
+      {children}
+    </div>
+  );
+}
+function AdmonitionHeading({icon, id, title}) {
+  // 文字列冒頭の#の数を数える
+  const depth = title.match ? (title.match(/^#+/) || [''])[0].length : 0;
+  // #を省いたタイトルを得る
+  const trimmedTitle = depth > 0 ? title.replace(/^#+/, '').trim() : title;
+  // スクロール位置調整のcss
+  const classNames = clsx("anchor", "title", headingStyles.anchorWithStickyNavbar);
+  // depthに応じて見出しタグをレンダー
+  return (
+    <div className={admonitionStyles.admonitionHeading}>
+      <span className={admonitionStyles.admonitionIcon}>{icon}</span>
+      {(() => {
+        if (depth == 3) {
+          return(
+            <h3
+              id={id}
+              className={classNames}
+            >
+              {trimmedTitle}
+            </h3>
+          )
+        } else if (depth == 4) {
+          return(
+            <h4
+              id={id}
+              className={classNames}
+            >
+              {trimmedTitle}
+            </h4>
+          )
+        } else if (depth == 5) {
+          return(
+            <h5
+              id={id}
+              className={classNames}
+            >
+              {trimmedTitle}
+            </h5>
+          )
+        } else if (depth == 6) {
+          return(
+            <h6
+              id={id}
+              className={classNames}
+            >
+              {trimmedTitle}
+            </h6>
+          )
+        } else {
+          return(
+            <>
+              {trimmedTitle}
+            </>
+          )
+        }
+      })()}
+    </div>
+  );
+}
+function AdmonitionContent({children}) {
+  return children ? (
+    <div className={admonitionStyles.admonitionContent}>{children}</div>
+  ) : null;
+}
+export default function AdmonitionLayout(props) {
+  const {type, icon, title, children, className, id} = props;
+  return (
+    <AdmonitionContainer type={type} className={className}>
+      <AdmonitionHeading title={title} icon={icon} id={id} />
+      <AdmonitionContent>{children}</AdmonitionContent>
+    </AdmonitionContainer>
+  );
+}
diff --git a/src/theme/Admonition/Type/Caution.js b/src/theme/Admonition/Type/Caution.js
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+++ b/src/theme/Admonition/Type/Caution.js
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+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+import React from 'react';
+import clsx from 'clsx';
+import Translate from '@docusaurus/Translate';
+import AdmonitionLayout from '../Layout';
+import IconWarning from '@docusaurus/theme-classic/lib/theme/Admonition/Icon/Warning';
+const infimaClassName = 'alert alert--warning';
+const defaultProps = {
+  icon: <IconWarning />,
+  title: (
+    <Translate
+      id="theme.admonition.caution"
+      description="The default label used for the Caution admonition (:::caution)">
+      caution
+    </Translate>
+  ),
+};
+// TODO remove before v4: Caution replaced by Warning
+// see https://github.com/facebook/docusaurus/issues/7558
+export default function AdmonitionTypeCaution(props) {
+  return (
+    <AdmonitionLayout
+      {...defaultProps}
+      {...props}
+      className={clsx(infimaClassName, props.className)}>
+      {props.children}
+    </AdmonitionLayout>
+  );
+}
diff --git a/src/theme/Admonition/Type/Danger.js b/src/theme/Admonition/Type/Danger.js
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+++ b/src/theme/Admonition/Type/Danger.js
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+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+import React from 'react';
+import clsx from 'clsx';
+import Translate from '@docusaurus/Translate';
+import AdmonitionLayout from '../Layout';
+import IconDanger from '@docusaurus/theme-classic/lib/theme/Admonition/Icon/Danger';
+const infimaClassName = 'alert alert--danger';
+const defaultProps = {
+  icon: <IconDanger />,
+  title: (
+    <Translate
+      id="theme.admonition.danger"
+      description="The default label used for the Danger admonition (:::danger)">
+      danger
+    </Translate>
+  ),
+};
+export default function AdmonitionTypeDanger(props) {
+  return (
+    <AdmonitionLayout
+      {...defaultProps}
+      {...props}
+      className={clsx(infimaClassName, props.className)}>
+      {props.children}
+    </AdmonitionLayout>
+  );
+}
diff --git a/src/theme/Admonition/Type/Info.js b/src/theme/Admonition/Type/Info.js
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+++ b/src/theme/Admonition/Type/Info.js
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+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+import React from 'react';
+import clsx from 'clsx';
+import Translate from '@docusaurus/Translate';
+import AdmonitionLayout from '../Layout';
+import IconInfo from '@docusaurus/theme-classic/lib/theme/Admonition/Icon/Info';
+const infimaClassName = 'alert alert--info';
+const defaultProps = {
+  icon: <IconInfo />,
+  title: (
+    <Translate
+      id="theme.admonition.info"
+      description="The default label used for the Info admonition (:::info)">
+      info
+    </Translate>
+  ),
+};
+export default function AdmonitionTypeInfo(props) {
+  return (
+    <AdmonitionLayout
+      {...defaultProps}
+      {...props}
+      className={clsx(infimaClassName, props.className)}>
+      {props.children}
+    </AdmonitionLayout>
+  );
+}
diff --git a/src/theme/Admonition/Type/Note.js b/src/theme/Admonition/Type/Note.js
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+++ b/src/theme/Admonition/Type/Note.js
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+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+import React from 'react';
+import clsx from 'clsx';
+import Translate from '@docusaurus/Translate';
+import AdmonitionLayout from '../Layout';
+import IconNote from '@docusaurus/theme-classic/lib/theme/Admonition/Icon/Note';
+const infimaClassName = 'alert alert--secondary';
+const defaultProps = {
+  icon: <IconNote />,
+  title: (
+    <Translate
+      id="theme.admonition.note"
+      description="The default label used for the Note admonition (:::note)">
+      note
+    </Translate>
+  ),
+};
+export default function AdmonitionTypeNote(props) {
+  return (
+    <AdmonitionLayout
+      {...defaultProps}
+      {...props}
+      className={clsx(infimaClassName, props.className)}>
+      {props.children}
+    </AdmonitionLayout>
+  );
+}
diff --git a/src/theme/Admonition/Type/Tip.js b/src/theme/Admonition/Type/Tip.js
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+++ b/src/theme/Admonition/Type/Tip.js
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+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+import React from 'react';
+import clsx from 'clsx';
+import Translate from '@docusaurus/Translate';
+import AdmonitionLayout from '../Layout';
+import IconTip from '@docusaurus/theme-classic/lib/theme/Admonition/Icon/Tip';
+const infimaClassName = 'alert alert--success';
+const defaultProps = {
+  icon: <IconTip />,
+  title: (
+    <Translate
+      id="theme.admonition.tip"
+      description="The default label used for the Tip admonition (:::tip)">
+      tip
+    </Translate>
+  ),
+};
+export default function AdmonitionTypeTip(props) {
+  return (
+    <AdmonitionLayout
+      {...defaultProps}
+      {...props}
+      className={clsx(infimaClassName, props.className)}>
+      {props.children}
+    </AdmonitionLayout>
+  );
+}
diff --git a/src/theme/Admonition/Type/Warning.js b/src/theme/Admonition/Type/Warning.js
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+++ b/src/theme/Admonition/Type/Warning.js
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+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+import React from 'react';
+import clsx from 'clsx';
+import Translate from '@docusaurus/Translate';
+import AdmonitionLayout from '../Layout';
+import IconWarning from '@docusaurus/theme-classic/lib/theme/Admonition/Icon/Warning';
+const infimaClassName = 'alert alert--warning';
+const defaultProps = {
+  icon: <IconWarning />,
+  title: (
+    <Translate
+      id="theme.admonition.warning"
+      description="The default label used for the Warning admonition (:::warning)">
+      warning
+    </Translate>
+  ),
+};
+export default function AdmonitionTypeWarning(props) {
+  return (
+    <AdmonitionLayout
+      {...defaultProps}
+      {...props}
+      className={clsx(infimaClassName, props.className)}>
+      {props.children}
+    </AdmonitionLayout>
+  );
+}
diff --git a/src/theme/Admonition/Types.js b/src/theme/Admonition/Types.js
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+++ b/src/theme/Admonition/Types.js
@@ -0,0 +1,33 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+import React from 'react';
+import AdmonitionTypeNote from './Type/Note';
+import AdmonitionTypeTip from './Type/Tip';
+import AdmonitionTypeInfo from './Type/Info';
+import AdmonitionTypeWarning from './Type/Warning';
+import AdmonitionTypeDanger from './Type/Danger';
+import AdmonitionTypeCaution from './Type/Caution';
+const admonitionTypes = {
+  note: AdmonitionTypeNote,
+  tip: AdmonitionTypeTip,
+  info: AdmonitionTypeInfo,
+  warning: AdmonitionTypeWarning,
+  danger: AdmonitionTypeDanger,
+};
+// Undocumented legacy admonition type aliases
+// Provide hardcoded/untranslated retrocompatible label
+// See also https://github.com/facebook/docusaurus/issues/7767
+const admonitionAliases = {
+  secondary: (props) => <AdmonitionTypeNote title="secondary" {...props} />,
+  important: (props) => <AdmonitionTypeInfo title="important" {...props} />,
+  success: (props) => <AdmonitionTypeTip title="success" {...props} />,
+  caution: AdmonitionTypeCaution,
+};
+export default {
+  ...admonitionTypes,
+  ...admonitionAliases,
+};
diff --git a/src/theme/Admonition/index.js b/src/theme/Admonition/index.js
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+++ b/src/theme/Admonition/index.js
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+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+import React from 'react';
+import {processAdmonitionProps} from '@docusaurus/theme-common';
+import AdmonitionTypes from './Types';
+function getAdmonitionTypeComponent(type) {
+  const component = AdmonitionTypes[type];
+  if (component) {
+    return component;
+  }
+  console.warn(
+    `No admonition component found for admonition type "${type}". Using Info as fallback.`,
+  );
+  return AdmonitionTypes.info;
+}
+export default function Admonition(unprocessedProps) {
+  const props = processAdmonitionProps(unprocessedProps);
+  const AdmonitionTypeComponent = getAdmonitionTypeComponent(props.type);
+  return <AdmonitionTypeComponent {...props} />;
+}