feature: add button to open cheatsheet in a new tab

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

frontend/locales/en.json

@@ -645,6 +645,7 @@
   "cheatsheet": {
     "button": "Open Cheatsheet",
     "modal":{
+      "popup": "Open in new tab",
       "title": "Cheatsheet",
       "headlines": {
         "description": "Description",

frontend/src/components/common/icon-button/icon-button.tsx

@@ -15,7 +15,6 @@ import type { Icon } from 'react-bootstrap-icons'
 
 export interface IconButtonProps extends ButtonProps, PropsWithDataTestId {
   icon: Icon
-  onClick?: () => void
   border?: boolean
   iconSize?: number | string
 }

frontend/src/components/common/modals/common-modal.tsx

@@ -8,8 +8,8 @@ import { cypressId } from '../../../utils/cypress-attribute'
 import { testId } from '../../../utils/test-id'
 import { UiIcon } from '../icons/ui-icon'
 import { ShowIf } from '../show-if/show-if'
-import type { PropsWithChildren } from 'react'
-import React, { useMemo } from 'react'
+import type { PropsWithChildren, ReactElement } from 'react'
+import React, { Fragment, useMemo } from 'react'
 import { Modal } from 'react-bootstrap'
 import type { Icon } from 'react-bootstrap-icons'
 import { Trans, useTranslation } from 'react-i18next'
@@ -26,6 +26,7 @@ export interface ModalContentProps {
   titleIcon?: Icon
   modalSize?: 'lg' | 'sm' | 'xl'
   additionalClasses?: string
+  additionalTitleElement?: ReactElement
 }
 
 export type CommonModalProps = PropsWithDataCypressId & ModalVisibilityProps & ModalContentProps
@@ -42,6 +43,7 @@ export type CommonModalProps = PropsWithDataCypressId & ModalVisibilityProps & M
  * @param modalSize The modal size
  * @param children The children to render into the modal.
  * @param titleIsI18nKey If the title is a i18n key and should be used as such
+ * @param additionalTitleElement additional optional element that should be shown in the header
  * @param props Additional props directly given to the modal
  */
 export const CommonModal: React.FC<PropsWithChildren<CommonModalProps>> = ({
@@ -54,6 +56,7 @@ export const CommonModal: React.FC<PropsWithChildren<CommonModalProps>> = ({
   additionalClasses,
   modalSize,
   children,
+  additionalTitleElement,
   ...props
 }) => {
   useTranslation()
@@ -77,6 +80,7 @@ export const CommonModal: React.FC<PropsWithChildren<CommonModalProps>> = ({
             <UiIcon icon={titleIcon} nbsp={true} />
             {titleElement}
           </Modal.Title>
+          {additionalTitleElement ?? <Fragment />}
         </Modal.Header>
         {children}
       </Modal>

frontend/src/components/editor-page/app-bar/cheatsheet/cheatsheet-button.tsx

@@ -6,10 +6,10 @@
 import { useBooleanState } from '../../../../hooks/common/use-boolean-state'
 import { cypressId } from '../../../../utils/cypress-attribute'
 import { CommonModal } from '../../../common/modals/common-modal'
-import { CheatsheetModalBody } from './cheatsheet-modal-body'
+import { CheatsheetContent } from './cheatsheet-content'
+import { CheatsheetInNewTabButton } from './cheatsheet-in-new-tab-button'
 import React, { Fragment } from 'react'
-import { Button } from 'react-bootstrap'
-import { QuestionCircle as IconQuestionCircle } from 'react-bootstrap-icons'
+import { Button, Modal } from 'react-bootstrap'
 import { Trans, useTranslation } from 'react-i18next'
 
 /**
@@ -32,12 +32,18 @@ export const CheatsheetButton: React.FC = () => {
       </Button>
       <CommonModal
         modalSize={'xl'}
-        titleIcon={IconQuestionCircle}
         show={modalVisibility}
         onHide={closeModal}
         showCloseButton={true}
-        titleI18nKey={'cheatsheet.modal.title'}>
-        <CheatsheetModalBody />
+        titleI18nKey={'cheatsheet.modal.title'}
+        additionalTitleElement={
+          <div className={'d-flex flex-row-reverse w-100 mx-2'}>
+            <CheatsheetInNewTabButton onClick={closeModal} />
+          </div>
+        }>
+        <Modal.Body>
+          <CheatsheetContent />
+        </Modal.Body>
       </CommonModal>
     </Fragment>
   )

frontend/src/components/editor-page/app-bar/cheatsheet/cheatsheet-content.tsx

@@ -10,13 +10,13 @@ import { CategoryAccordion } from './category-accordion'
 import { CheatsheetEntryPane } from './cheatsheet-entry-pane'
 import { TopicSelection } from './topic-selection'
 import React, { useCallback, useMemo, useState } from 'react'
-import { Col, ListGroup, Modal, Row } from 'react-bootstrap'
+import { Col, ListGroup, Row } from 'react-bootstrap'
 import { Trans } from 'react-i18next'
 
 /**
  * Renders the tab content for the cheatsheet.
  */
-export const CheatsheetModalBody: React.FC = () => {
+export const CheatsheetContent: React.FC = () => {
   const [selectedExtension, setSelectedExtension] = useState<CheatsheetExtension>()
   const [selectedEntry, setSelectedEntry] = useState<CheatsheetEntry>()
 
@@ -31,14 +31,9 @@ export const CheatsheetModalBody: React.FC = () => {
   )
 
   return (
-    <Modal.Body>
     <Row className={`mt-2`}>
       <Col xs={3}>
-          <CategoryAccordion
-            extensions={extensions}
-            selectedEntry={selectedExtension}
-            onStateChange={changeExtension}
-          />
+        <CategoryAccordion extensions={extensions} selectedEntry={selectedExtension} onStateChange={changeExtension} />
       </Col>
       <Col xs={9}>
         <ListGroup>
@@ -60,6 +55,5 @@ export const CheatsheetModalBody: React.FC = () => {
         </ListGroup>
       </Col>
     </Row>
-    </Modal.Body>
   )
 }

frontend/src/components/editor-page/app-bar/cheatsheet/cheatsheet-in-new-tab-button.tsx

@@ -0,0 +1,44 @@
+/*
+ * SPDX-FileCopyrightText: 2023 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+import { IconButton } from '../../../common/icon-button/icon-button'
+import type { MouseEvent } from 'react'
+import React, { useCallback } from 'react'
+import { BoxArrowUpRight } from 'react-bootstrap-icons'
+import { useTranslation } from 'react-i18next'
+
+export interface CheatsheetInNewTabButtonProps {
+  onClick?: () => void
+}
+
+/**
+ * Renders a button that opens the cheatsheet in a new tab.
+ */
+export const CheatsheetInNewTabButton: React.FC<CheatsheetInNewTabButtonProps> = ({ onClick }) => {
+  const openPopUp = useCallback(
+    (event: MouseEvent<HTMLButtonElement>) => {
+      event.preventDefault()
+      window.open('/cheatsheet', '_blank', 'menubar=no,width=1000,height=600,location=no,toolbar=no')
+      onClick?.()
+    },
+    [onClick]
+  )
+
+  const { t } = useTranslation()
+
+  return (
+    <IconButton
+      size={'sm'}
+      iconSize={1.2}
+      href={'/cheatsheet'}
+      onClick={openPopUp}
+      icon={BoxArrowUpRight}
+      className={'p-2 border-0'}
+      variant={'outline-dark'}
+      target={'_blank'}
+      title={t('cheatsheet.modal.popup') ?? ''}
+    />
+  )
+}

frontend/src/pages/cheatsheet.tsx

@@ -0,0 +1,21 @@
+/*
+ * SPDX-FileCopyrightText: 2023 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+import { CheatsheetContent } from '../components/editor-page/app-bar/cheatsheet/cheatsheet-content'
+import { useApplyDarkMode } from '../hooks/common/use-apply-dark-mode'
+import type { NextPage } from 'next'
+import { Container } from 'react-bootstrap'
+
+const CheatsheetPage: NextPage = () => {
+  useApplyDarkMode()
+
+  return (
+    <Container>
+      <CheatsheetContent></CheatsheetContent>
+    </Container>
+  )
+}
+
+export default CheatsheetPage