Add a "License" tab to local extensions

- Fixes microsoft#81563

src/vs/platform/extensionManagement/common/extensionManagement.ts

@@ -94,6 +94,7 @@ export interface ILocalExtension extends IExtension {
 	metadata: IGalleryMetadata;
 	readmeUrl: URI | null;
 	changelogUrl: URI | null;
+	licenseUrl: URI | null;
 }
 
 export const IExtensionManagementService = createDecorator<IExtensionManagementService>('extensionManagementService');

src/vs/platform/extensionManagement/node/extensionManagementService.ts

@@ -790,8 +790,10 @@ export class ExtensionManagementService extends Disposable implements IExtension
 					const readmeUrl = readme ? URI.file(path.join(extensionPath, readme)) : null;
 					const changelog = children.filter(child => /^changelog(\.txt|\.md|)$/i.test(child))[0];
 					const changelogUrl = changelog ? URI.file(path.join(extensionPath, changelog)) : null;
+					const license = children.filter(child => /^license(\.txt|\.md|)$/i.test(child))[0];
+					const licenseUrl = license ? URI.file(path.join(extensionPath, license)) : null;
 					const identifier = { id: getGalleryExtensionId(manifest.publisher, manifest.name) };
-					const local = <ILocalExtension>{ type, identifier, manifest, metadata, location: URI.file(extensionPath), readmeUrl, changelogUrl };
+					const local = <ILocalExtension>{ type, identifier, manifest, metadata, location: URI.file(extensionPath), readmeUrl, changelogUrl, licenseUrl };
 					if (metadata) {
 						this.setMetadata(local, metadata);
 					}

src/vs/workbench/contrib/extensions/browser/extensionEditor.ts

@@ -127,6 +127,7 @@ const NavbarSection = {
 	Readme: 'readme',
 	Contributions: 'contributions',
 	Changelog: 'changelog',
+	License: 'license',
 	Dependencies: 'dependencies',
 	ExtensionPack: 'extensionPack'
 };
@@ -169,6 +170,7 @@ export class ExtensionEditor extends BaseEditor {
 
 	private extensionReadme: Cache<string> | null;
 	private extensionChangelog: Cache<string> | null;
+	private extensionLicense: Cache<string> | null;
 	private extensionManifest: Cache<IExtensionManifest | null> | null;
 
 	private layoutParticipants: ILayoutParticipant[] = [];
@@ -196,6 +198,7 @@ export class ExtensionEditor extends BaseEditor {
 		super(ExtensionEditor.ID, telemetryService, themeService, storageService);
 		this.extensionReadme = null;
 		this.extensionChangelog = null;
+		this.extensionLicense = null;
 		this.extensionManifest = null;
 	}
 
@@ -232,7 +235,7 @@ export class ExtensionEditor extends BaseEditor {
 		repository.tabIndex = 0;
 
 		const license = append(subtitle, $('span.license.clickable'));
-		license.textContent = localize('license', 'License');
+		license.textContent = localize('license', "License");
 		license.style.display = 'none';
 		license.tabIndex = 0;
 
@@ -325,6 +328,7 @@ export class ExtensionEditor extends BaseEditor {
 
 		this.extensionReadme = new Cache(() => createCancelablePromise(token => extension.getReadme(token)));
 		this.extensionChangelog = new Cache(() => createCancelablePromise(token => extension.getChangelog(token)));
+		this.extensionLicense = new Cache(() => createCancelablePromise(token => extension.getLocalLicense(token)));
 		this.extensionManifest = new Cache(() => createCancelablePromise(token => extension.getManifest(token)));
 
 		const remoteBadge = this.instantiationService.createInstance(RemoteBadgeWidget, template.iconContainer, true);
@@ -442,6 +446,9 @@ export class ExtensionEditor extends BaseEditor {
 				if (extension.hasChangelog()) {
 					template.navbar.push(NavbarSection.Changelog, localize('changelog', "Changelog"), localize('changelogtooltip', "Extension update history, rendered from the extension's 'CHANGELOG.md' file"));
 				}
+				if (!extension.url && extension.hasLocalLicense()) {
+					template.navbar.push(NavbarSection.License, localize('license', "License"), localize('licensetooltip', "Extension license, rendered from the extension's 'LICENSE.md' file"));
+				}
 				if (extension.dependencies.length) {
 					template.navbar.push(NavbarSection.Dependencies, localize('dependencies', "Dependencies"), localize('dependenciestooltip', "Lists extensions this extension depends on"));
 				}
@@ -568,6 +575,7 @@ export class ExtensionEditor extends BaseEditor {
 			case NavbarSection.Readme: return this.openReadme(template);
 			case NavbarSection.Contributions: return this.openContributions(template);
 			case NavbarSection.Changelog: return this.openChangelog(template);
+			case NavbarSection.License: return this.openLicense(template);
 			case NavbarSection.Dependencies: return this.openDependencies(extension, template);
 			case NavbarSection.ExtensionPack: return this.openExtensionPack(extension, template);
 		}
@@ -829,6 +837,10 @@ export class ExtensionEditor extends BaseEditor {
 		return this.openMarkdown(this.extensionChangelog!.get(), localize('noChangelog', "No Changelog available."), template);
 	}
 
+	private openLicense(template: IExtensionEditorTemplate): Promise<IActiveElement> {
+		return this.openMarkdown(this.extensionLicense!.get(), localize('noLicense', "No License available."), template);
+	}
+
 	private openContributions(template: IExtensionEditorTemplate): Promise<IActiveElement> {
 		const content = $('div', { class: 'subcontent', tabindex: '0' });
 		return this.loadContents(() => this.extensionManifest!.get(), template)

src/vs/workbench/contrib/extensions/browser/extensionsWorkbenchService.ts

@@ -283,6 +283,20 @@ ${this.description}
 		return this.fileService.readFile(changelogUrl).then(content => content.value.toString());
 	}
 
+	hasLocalLicense(): boolean {
+		return !!(this.local && this.local.licenseUrl);
+	}
+
+	getLocalLicense(token: CancellationToken): Promise<string> {
+		const licenseUrl = this.local && this.local.licenseUrl;
+
+		if (!licenseUrl) {
+			return Promise.reject(new Error('not available'));
+		}
+
+		return this.fileService.readFile(licenseUrl).then(content => content.value.toString());
+	}
+
 	get dependencies(): string[] {
 		const { local, gallery } = this;
 		if (gallery && !this.isGalleryOutdated()) {

src/vs/workbench/contrib/extensions/common/extensions.ts

@@ -63,6 +63,8 @@ export interface IExtension {
 	hasReadme(): boolean;
 	getChangelog(token: CancellationToken): Promise<string>;
 	hasChangelog(): boolean;
+	getLocalLicense(token: CancellationToken): Promise<string>;
+	hasLocalLicense(): boolean;
 	readonly server?: IExtensionManagementServer;
 	readonly local?: ILocalExtension;
 	gallery?: IGalleryExtension;