/* vim: set ts=2 sw=2 sts=2 et tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ const lazy = {}; ChromeUtils.defineESModuleGetters(lazy, { PageThumbUtils: "resource://gre/modules/PageThumbUtils.sys.mjs", }); export class ThumbnailsChild extends JSWindowActorChild { receiveMessage(message) { switch (message.name) { case "Browser:Thumbnail:ContentInfo": { let [width, height] = lazy.PageThumbUtils.getContentSize( this.contentWindow ); return { width, height }; } case "Browser:Thumbnail:CheckState": { /** * Remote isSafeForCapture request handler for PageThumbs. */ return new Promise(resolve => Services.tm.idleDispatchToMainThread(() => { if (!this.manager) { // If we have no manager, our actor has been destroyed, which // means we can't respond, and trying to touch // `this.contentWindow` or `this.browsingContext` will throw. // The `sendQuery` call in the parent will already have been // rejected when the actor was destroyed, so there's no need to // reject our promise or log an additional error. return; } let result = lazy.PageThumbUtils.shouldStoreContentThumbnail( this.contentWindow, this.browsingContext.docShell ); resolve(result); }) ); } case "Browser:Thumbnail:GetOriginalURL": { /** * Remote GetOriginalURL request handler for PageThumbs. */ let channel = this.browsingContext.docShell.currentDocumentChannel; let channelError = lazy.PageThumbUtils.isChannelErrorResponse(channel); let originalURL; try { originalURL = channel.originalURI.spec; } catch (ex) {} return { channelError, originalURL }; } } return undefined; } }