зеркало из https://github.com/mozilla/gecko-dev.git
90 строки
2.5 KiB
JavaScript
90 строки
2.5 KiB
JavaScript
"use strict";
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Cu.import("resource://gre/modules/Services.jsm");
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Cu.import("resource://gre/modules/Task.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "AddonManager",
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"resource://gre/modules/AddonManager.jsm");
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Cu.import("resource://gre/modules/ExtensionParent.jsm");
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var {
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HiddenExtensionPage,
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promiseExtensionViewLoaded,
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} = ExtensionParent;
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// Responsible for the background_page section of the manifest.
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class BackgroundPage extends HiddenExtensionPage {
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constructor(extension, options) {
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super(extension, "background");
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this.page = options.page || null;
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this.isGenerated = !!options.scripts;
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this.webNav = null;
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if (this.page) {
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this.url = this.extension.baseURI.resolve(this.page);
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} else if (this.isGenerated) {
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this.url = this.extension.baseURI.resolve("_generated_background_page.html");
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}
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if (!this.extension.isExtensionURL(this.url)) {
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this.extension.manifestError("Background page must be a file within the extension");
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this.url = this.extension.baseURI.resolve("_blank.html");
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}
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}
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async build() {
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await this.createBrowserElement();
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extensions.emit("extension-browser-inserted", this.browser);
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this.browser.loadURI(this.url);
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let context = await promiseExtensionViewLoaded(this.browser);
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if (this.browser.docShell) {
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this.webNav = this.browser.docShell.QueryInterface(Ci.nsIWebNavigation);
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let window = this.webNav.document.defaultView;
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// Set the add-on's main debugger global, for use in the debugger
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// console.
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if (this.extension.addonData.instanceID) {
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AddonManager.getAddonByInstanceID(this.extension.addonData.instanceID)
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.then(addon => addon.setDebugGlobal(window));
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}
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}
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if (context) {
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// Wait until all event listeners registered by the script so far
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// to be handled.
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await Promise.all(context.listenerPromises);
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context.listenerPromises = null;
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}
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this.extension.emit("startup");
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}
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shutdown() {
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if (this.extension.addonData.instanceID) {
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AddonManager.getAddonByInstanceID(this.extension.addonData.instanceID)
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.then(addon => addon.setDebugGlobal(null));
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}
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super.shutdown();
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}
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}
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this.backgroundPage = class extends ExtensionAPI {
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onManifestEntry(entryName) {
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let {manifest} = this.extension;
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this.bgPage = new BackgroundPage(this.extension, manifest.background);
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return this.bgPage.build();
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}
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onShutdown() {
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this.bgPage.shutdown();
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}
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};
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