[vscode] support workspaceContains activation events

Signed-off-by: Anton Kosyakov <anton.kosyakov@typefox.io>

CHANGELOG.md

@@ -10,6 +10,7 @@ Breaking changes:
 - [plugin] removed member `processOptions` from `AbstractHostedInstanceManager` as it is not initialized or used
 - [plugin] added basic support of activation events [#5622](https://github.com/theia-ide/theia/pull/5622)
   - `HostedPluginSupport` is refactored to support multiple `PluginManagerExt` properly
+- [plugin] added support of `workspaceContains` activation events [#5649](https://github.com/theia-ide/theia/pull/5649)
 
 ## v0.8.0
 

packages/plugin-ext/src/hosted/browser/hosted-plugin.ts

@@ -13,6 +13,11 @@
  *
  * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
  ********************************************************************************/
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+// some code copied and modified from https://github.com/microsoft/vscode/blob/da5fb7d5b865aa522abc7e82c10b746834b98639/src/vs/workbench/api/node/extHostExtensionService.ts
 
 // tslint:disable:no-any
 
@@ -22,7 +27,7 @@ import { HostedPluginServer, PluginMetadata, getPluginId } from '../../common/pl
 import { HostedPluginWatcher } from './hosted-plugin-watcher';
 import { setUpPluginApi } from '../../main/browser/main-context';
 import { RPCProtocol, RPCProtocolImpl } from '../../api/rpc-protocol';
-import { ILogger, ContributionProvider, CommandRegistry, WillExecuteCommandEvent } from '@theia/core';
+import { ILogger, ContributionProvider, CommandRegistry, WillExecuteCommandEvent, CancellationTokenSource } from '@theia/core';
 import { PreferenceServiceImpl, PreferenceProviderProvider } from '@theia/core/lib/browser';
 import { WorkspaceService } from '@theia/workspace/lib/browser';
 import { PluginContributionHandler } from '../../main/browser/plugin-contribution-handler';
@@ -40,6 +45,8 @@ import { Deferred } from '@theia/core/lib/common/promise-util';
 import { DebugSessionManager } from '@theia/debug/lib/browser/debug-session-manager';
 import { DebugConfigurationManager } from '@theia/debug/lib/browser/debug-configuration-manager';
 import { WaitUntilEvent } from '@theia/core/lib/common/event';
+import { FileSearchService } from '@theia/file-search/lib/common/file-search-service';
+import { isCancelled } from '@theia/core';
 
 export type PluginHost = 'frontend' | string;
 export type DebugActivationEvent = 'onDebugResolve' | 'onDebugInitialConfigurations' | 'onDebugAdapterProtocolTracker';
@@ -94,6 +101,9 @@ export class HostedPluginSupport {
     @inject(DebugConfigurationManager)
     protected readonly debugConfigurationManager: DebugConfigurationManager;
 
+    @inject(FileSearchService)
+    protected readonly fileSearchService: FileSearchService;
+
     private theiaReadyPromise: Promise<any>;
 
     protected readonly managers: PluginManagerExt[] = [];
@@ -178,11 +188,11 @@ export class HostedPluginSupport {
         return rpc;
     }
 
-    protected initPluginHostManager(rpc: RPCProtocol, data: PluginsInitializationData): void {
+    protected async initPluginHostManager(rpc: RPCProtocol, data: PluginsInitializationData): Promise<void> {
         const manager = rpc.getProxy(MAIN_RPC_CONTEXT.HOSTED_PLUGIN_MANAGER_EXT);
         this.managers.push(manager);
 
-        manager.$init({
+        await manager.$init({
             plugins: data.plugins,
             preferences: getPreferences(this.preferenceProviderProvider, data.roots),
             globalState: data.globalStates,
@@ -194,6 +204,10 @@ export class HostedPluginSupport {
                 hostLogPath: data.logPath,
                 hostStoragePath: data.storagePath || ''
             });
+
+        for (const plugin of data.plugins) {
+            this.activateByWorkspaceContains(manager, plugin);
+        }
     }
 
     private createServerRpc(pluginID: string, hostID: string): RPCProtocol {
@@ -271,6 +285,58 @@ export class HostedPluginSupport {
         await Promise.all(promises);
     }
 
+    protected async activateByWorkspaceContains(manager: PluginManagerExt, plugin: PluginMetadata): Promise<void> {
+        if (!plugin.source.activationEvents) {
+            return;
+        }
+        const paths: string[] = [];
+        const includePatterns: string[] = [];
+        // should be aligned with https://github.com/microsoft/vscode/blob/da5fb7d5b865aa522abc7e82c10b746834b98639/src/vs/workbench/api/node/extHostExtensionService.ts#L460-L469
+        for (const activationEvent of plugin.source.activationEvents) {
+            if (/^workspaceContains:/.test(activationEvent)) {
+                const fileNameOrGlob = activationEvent.substr('workspaceContains:'.length);
+                if (fileNameOrGlob.indexOf('*') >= 0 || fileNameOrGlob.indexOf('?') >= 0) {
+                    includePatterns.push(fileNameOrGlob);
+                } else {
+                    paths.push(fileNameOrGlob);
+                }
+            }
+        }
+        const activatePlugin = () => manager.$activateByEvent(`onPlugin:${plugin.model.id}`);
+        const promises: Promise<boolean>[] = [];
+        if (paths.length) {
+            promises.push(this.workspaceService.containsSome(paths));
+        }
+        if (includePatterns.length) {
+            const tokenSource = new CancellationTokenSource();
+            const searchTimeout = setTimeout(() => {
+                tokenSource.cancel();
+                // activate eagerly if took to long to search
+                activatePlugin();
+            }, 7000);
+            promises.push((async () => {
+                try {
+                    const result = await this.fileSearchService.find('', {
+                        rootUris: this.workspaceService.tryGetRoots().map(r => r.uri),
+                        includePatterns,
+                        limit: 1
+                    }, tokenSource.token);
+                    return result.length > 0;
+                } catch (e) {
+                    if (!isCancelled(e)) {
+                        console.error(e);
+                    }
+                    return false;
+                } finally {
+                    clearTimeout(searchTimeout);
+                }
+            })());
+        }
+        if (promises.length && await Promise.all(promises).then(exists => exists.some(v => v))) {
+            await activatePlugin();
+        }
+    }
+
 }
 
 interface PluginsInitializationData {

packages/plugin-ext/src/plugin/plugin-manager.ts

@@ -65,7 +65,8 @@ export class PluginManagerExtImpl implements PluginManagerExt, PluginManager {
         '*',
         'onLanguage',
         'onCommand',
-        'onDebug', 'onDebugInitialConfigurations', 'onDebugResolve', 'onDebugAdapterProtocolTracker'
+        'onDebug', 'onDebugInitialConfigurations', 'onDebugResolve', 'onDebugAdapterProtocolTracker',
+        'workspaceContains'
     ]);
 
     private readonly registry = new Map<string, Plugin>();
@@ -156,6 +157,8 @@ export class PluginManagerExtImpl implements PluginManagerExt, PluginManager {
         this.registry.set(plugin.model.id, plugin);
         if (plugin.pluginPath && Array.isArray(plugin.rawModel.activationEvents)) {
             const activation = () => this.loadPlugin(plugin, configStorage);
+            // an internal activation event is a subject to change
+            this.setActivation(`onPlugin:${plugin.model.id}`, activation);
             const unsupportedActivationEvents = plugin.rawModel.activationEvents.filter(e => !PluginManagerExtImpl.SUPPORTED_ACTIVATION_EVENTS.has(e.split(':')[0]));
             if (unsupportedActivationEvents.length) {
                 console.warn(`Unsupported activation events: ${unsupportedActivationEvents.join(', ')}, please open an issue: https://github.com/theia-ide/theia/issues/new`);
@@ -164,7 +167,7 @@ export class PluginManagerExtImpl implements PluginManagerExt, PluginManager {
             } else {
                 for (let activationEvent of plugin.rawModel.activationEvents) {
                     if (activationEvent === 'onUri') {
-                        activationEvent = `onUri:${plugin.model.id}`;
+                        activationEvent = `onUri:theia://${plugin.model.publisher.toLowerCase()}.${plugin.model.name.toLowerCase()}`;
                     }
                     this.setActivation(activationEvent, activation);
                 }