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Implement vscode WebviewView API (eclipse-theia#10705)
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packages/plugin-ext/src/main/browser/webview-views/webview-views-main.ts
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| /******************************************************************************** | ||
| * Copyright (C) 2021 SAP SE or an SAP affiliate company and others. | ||
| * | ||
| * This program and the accompanying materials are made available under the | ||
| * terms of the Eclipse Public License v. 2.0 which is available at | ||
| * http://www.eclipse.org/legal/epl-2.0. | ||
| * | ||
| * This Source Code may also be made available under the following Secondary | ||
| * Licenses when the conditions for such availability set forth in the Eclipse | ||
| * Public License v. 2.0 are satisfied: GNU General Public License, version 2 | ||
| * with the GNU Classpath Exception which is available at | ||
| * https://www.gnu.org/software/classpath/license.html. | ||
| * | ||
| * 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/e1f0f8f51390dea5df9096718fb6b647ed5a9534/src/vs/workbench/api/browser/mainThreadWebviewViews.ts | ||
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| import { inject, interfaces } from '@theia/core/shared/inversify'; | ||
| import { WebviewViewsMain, MAIN_RPC_CONTEXT, WebviewViewsExt } from '../../../common/plugin-api-rpc'; | ||
| import { RPCProtocol } from '../../../common/rpc-protocol'; | ||
| import { Disposable, DisposableCollection, ILogger } from '@theia/core'; | ||
| import { WebviewView } from './webview-views'; | ||
| import { CancellationToken } from '@theia/core/lib/common/cancellation'; | ||
| import { WebviewsMainImpl } from '../webviews-main'; | ||
| import { Widget, WidgetManager } from '@theia/core/lib/browser'; | ||
| import { PluginViewRegistry } from '../view/plugin-view-registry'; | ||
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| export class WebviewViewsMainImpl implements WebviewViewsMain, Disposable { | ||
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| protected readonly proxy: WebviewViewsExt; | ||
| protected readonly toDispose = new DisposableCollection( | ||
| Disposable.create(() => { /* mark as not disposed */ }) | ||
| ); | ||
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| protected readonly webviewViews = new Map<string, WebviewView>(); | ||
| protected readonly webviewViewProviders = new Map<string, Disposable>(); | ||
| protected readonly widgetManager: WidgetManager; | ||
| protected readonly pluginViewRegistry: PluginViewRegistry; | ||
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| @inject(ILogger) | ||
| protected readonly logger: ILogger; | ||
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| constructor(rpc: RPCProtocol, | ||
| container: interfaces.Container, | ||
| readonly webviewsMain: WebviewsMainImpl | ||
| ) { | ||
| this.proxy = rpc.getProxy(MAIN_RPC_CONTEXT.WEBVIEW_VIEWS_EXT); | ||
| this.widgetManager = container.get(WidgetManager); | ||
| this.pluginViewRegistry = container.get(PluginViewRegistry); | ||
| } | ||
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| dispose(): void { | ||
| this.toDispose.dispose(); | ||
| } | ||
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| async $registerWebviewViewProvider(viewType: string, options: { retainContextWhenHidden?: boolean, serializeBuffersForPostMessage: boolean }): Promise<void> { | ||
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| if (this.webviewViewProviders.has(viewType)) { | ||
| throw new Error(`View provider for ${viewType} already registered`); | ||
| } | ||
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| const registration = await this.pluginViewRegistry.registerWebviewView(viewType, { | ||
| resolve: async (webviewView: WebviewView, cancellation: CancellationToken) => { | ||
| const handle = webviewView.webview.identifier.id; | ||
| this.webviewViews.set(handle, webviewView); | ||
| this.webviewsMain.hookWebview(webviewView.webview); | ||
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| let state: string | undefined; | ||
| if (webviewView.webview.state) { | ||
| try { | ||
| state = JSON.parse(webviewView.webview.state); | ||
| console.log(state); | ||
| } catch (e) { | ||
| console.error('Could not load webview state', e, webviewView.webview.state); | ||
| } | ||
| } | ||
| if (options) { | ||
| webviewView.webview.options = options; | ||
| } | ||
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| webviewView.onDidChangeVisibility(visible => { | ||
| this.proxy.$onDidChangeWebviewViewVisibility(handle, visible); | ||
| }); | ||
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| webviewView.onDidDispose(() => { | ||
| this.proxy.$disposeWebviewView(handle); | ||
| this.webviewViews.delete(handle); | ||
| }); | ||
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| try { | ||
| this.proxy.$resolveWebviewView(handle, viewType, webviewView.title, state, cancellation); | ||
| } catch (error) { | ||
| this.logger.error(`Error resolving webview view '${viewType}': ${error}`); | ||
| webviewView.webview.setHTML('failed to load plugin webview view'); | ||
| } | ||
| } | ||
| }); | ||
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| this.webviewViewProviders.set(viewType, registration); | ||
| } | ||
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| protected getWebview(handle: string): Widget | undefined { | ||
| return this.widgetManager.tryGetWidget(handle); | ||
| } | ||
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| $unregisterWebviewViewProvider(viewType: string): void { | ||
| const provider = this.webviewViewProviders.get(viewType); | ||
| if (!provider) { | ||
| throw new Error(`No view provider for ${viewType} registered`); | ||
| } | ||
| provider.dispose(); | ||
| this.webviewViewProviders.delete(viewType); | ||
| } | ||
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| $setWebviewViewTitle(handle: string, value: string | undefined): void { | ||
| const webviewView = this.getWebviewView(handle); | ||
| webviewView.title = value; | ||
| } | ||
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| $setWebviewViewDescription(handle: string, value: string | undefined): void { | ||
| const webviewView = this.getWebviewView(handle); | ||
| webviewView.description = value; | ||
| } | ||
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| $show(handle: string, preserveFocus: boolean): void { | ||
| const webviewView = this.getWebviewView(handle); | ||
| webviewView.show(preserveFocus); | ||
| } | ||
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| protected getWebviewView(handle: string): WebviewView { | ||
| const webviewView = this.webviewViews.get(handle); | ||
| if (!webviewView) { | ||
| throw new Error(`No webview view registered for handle '${handle}'`); | ||
| } | ||
| return webviewView; | ||
| } | ||
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| } |
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