Desktop: Resolves #4462: Improved usability when plugin repository cannot be connected to

.eslintignore

@@ -677,6 +677,9 @@ packages/app-desktop/gui/style/StyledFormLabel.js.map
 packages/app-desktop/gui/style/StyledInput.d.ts
 packages/app-desktop/gui/style/StyledInput.js
 packages/app-desktop/gui/style/StyledInput.js.map
+packages/app-desktop/gui/style/StyledLink.d.ts
+packages/app-desktop/gui/style/StyledLink.js
+packages/app-desktop/gui/style/StyledLink.js.map
 packages/app-desktop/gui/style/StyledMessage.d.ts
 packages/app-desktop/gui/style/StyledMessage.js
 packages/app-desktop/gui/style/StyledMessage.js.map

.gitignore

@@ -663,6 +663,9 @@ packages/app-desktop/gui/style/StyledFormLabel.js.map
 packages/app-desktop/gui/style/StyledInput.d.ts
 packages/app-desktop/gui/style/StyledInput.js
 packages/app-desktop/gui/style/StyledInput.js.map
+packages/app-desktop/gui/style/StyledLink.d.ts
+packages/app-desktop/gui/style/StyledLink.js
+packages/app-desktop/gui/style/StyledLink.js.map
 packages/app-desktop/gui/style/StyledMessage.d.ts
 packages/app-desktop/gui/style/StyledMessage.js
 packages/app-desktop/gui/style/StyledMessage.js.map

packages/app-desktop/gui/ConfigScreen/controls/plugins/PluginsStates.tsx

@@ -13,8 +13,13 @@ import { PluginItem } from './PluginBox';
 import RepositoryApi from '@joplin/lib/services/plugins/RepositoryApi';
 import Setting from '@joplin/lib/models/Setting';
 import useOnInstallHandler, { OnPluginSettingChangeEvent } from './useOnInstallHandler';
+import Logger from '@joplin/lib/Logger';
+import StyledMessage from '../../../style/StyledMessage';
+import StyledLink from '../../../style/StyledLink';
 const { space } = require('styled-system');
 
+const logger = Logger.create('PluginState');
+
 const maxWidth: number = 320;
 
 const Root = styled.div`
@@ -32,6 +37,11 @@ const ToolsButton = styled(Button)`
 	margin-right: 6px;
 `;
 
+const RepoApiErrorMessage = styled(StyledMessage)`
+	max-width: ${props => props.maxWidth}px;
+	margin-bottom: 10px;
+`;
+
 interface Props {
 	value: any;
 	themeId: number;
@@ -84,6 +94,8 @@ export default function(props: Props) {
 	const [manifestsLoaded, setManifestsLoaded] = useState<boolean>(false);
 	const [updatingPluginsIds, setUpdatingPluginIds] = useState<Record<string, boolean>>({});
 	const [canBeUpdatedPluginIds, setCanBeUpdatedPluginIds] = useState<Record<string, boolean>>({});
+	const [repoApiError, setRepoApiError] = useState<Error>(null);
+	const [fetchManifestTime, setFetchManifestTime] = useState<number>(Date.now());
 
 	const pluginService = PluginService.instance();
 
@@ -96,9 +108,25 @@ export default function(props: Props) {
 	useEffect(() => {
 		let cancelled = false;
 		async function fetchManifests() {
-			await repoApi().loadManifests();
+			setManifestsLoaded(false);
+			setRepoApiError(null);
+
+			let loadError: Error = null;
+			try {
+				await repoApi().loadManifests();
+			} catch (error) {
+				logger.error(error);
+				loadError = error;
+			}
+
 			if (cancelled) return;
-			setManifestsLoaded(true);
+
+			if (loadError) {
+				setManifestsLoaded(false);
+				setRepoApiError(loadError);
+			} else {
+				setManifestsLoaded(true);
+			}
 		}
 
 		void fetchManifests();
@@ -106,7 +134,7 @@ export default function(props: Props) {
 		return () => {
 			cancelled = true;
 		};
-	}, []);
+	}, [fetchManifestTime]);
 
 	useEffect(() => {
 		if (!manifestsLoaded) return () => {};
@@ -252,7 +280,7 @@ export default function(props: Props) {
 
 	function renderSearchArea() {
 		return (
-			<div style={{ marginBottom: 20 }}>
+			<div style={{ marginBottom: 0 }}>
 				<SearchPlugins
 					disabled={!manifestsLoaded}
 					maxWidth={maxWidth}
@@ -268,11 +296,18 @@ export default function(props: Props) {
 		);
 	}
 
+	function renderRepoApiError() {
+		if (!repoApiError) return null;
+
+		return <RepoApiErrorMessage maxWidth={maxWidth} type="error">{_('Could not connect to plugin repository')} - <StyledLink href="#" onClick={() => { setFetchManifestTime(Date.now); }}>{_('Try again')}</StyledLink></RepoApiErrorMessage>;
+	}
+
 	function renderBottomArea() {
 		if (searchQuery) return null;
 
 		return (
 			<div>
+				{renderRepoApiError()}
 				<div style={{ display: 'flex', flexDirection: 'row', maxWidth }}>
 					<ToolsButton tooltip={_('Plugin tools')} iconName="fas fa-cog" level={ButtonLevel.Secondary} onClick={onToolsClick}/>
 					<div style={{ display: 'flex', flex: 1 }}>

packages/app-desktop/gui/ConfigScreen/controls/plugins/SearchPlugins.tsx

@@ -101,7 +101,7 @@ export default function(props: Props) {
 					onChange={onChange}
 					onSearchButtonClick={onSearchButtonClick}
 					searchStarted={searchStarted}
-					placeholder={_('Search for plugins...')}
+					placeholder={props.disabled ? _('Please wait...') : _('Search for plugins...')}
 					disabled={props.disabled}
 				/>
 			</div>

packages/app-desktop/gui/style/StyledLink.tsx

@@ -0,0 +1,9 @@
+import styled from 'styled-components';
+
+const StyledLink = styled.a`
+	font-size: ${props => props.theme.fontSize}px;
+	color: ${props => props.theme.urlColor};
+	font-family: ${props => props.theme.fontFamily};
+`;
+
+export default StyledLink;

packages/app-desktop/gui/style/StyledMessage.tsx

@@ -7,6 +7,7 @@ const StyledMessage = styled.div`
 	color: ${props => props.theme.color};
 	font-family: ${props => props.theme.fontFamily};
 	padding: ${props => props.type === 'error' ? props.theme.mainPadding : '0'}px;
+	word-break: break-all;
 `;
 
 export default StyledMessage;