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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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