зеркало из https://github.com/mozilla/gecko-dev.git
84 строки
2.5 KiB
JavaScript
84 строки
2.5 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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var { Cr } = require("chrome");
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var { TabActor } = require("devtools/server/actors/tab");
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/**
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* Tab actor for documents living in a child process.
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*
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* Depends on TabActor, defined in tab.js.
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*/
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/**
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* Creates a tab actor for handling requests to the single tab, like
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* attaching and detaching. ContentActor respects the actor factories
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* registered with DebuggerServer.addTabActor.
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*
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* @param connection DebuggerServerConnection
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* The conection to the client.
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* @param chromeGlobal
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* The content script global holding |content| and |docShell| properties for a tab.
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* @param prefix
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* the prefix used in protocol to create IDs for each actor.
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* Used as ID identifying this particular TabActor from the parent process.
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*/
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function ContentActor(connection, chromeGlobal, prefix) {
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this._chromeGlobal = chromeGlobal;
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this._prefix = prefix;
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TabActor.call(this, connection, chromeGlobal);
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this.traits.reconfigure = false;
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this._sendForm = this._sendForm.bind(this);
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this._chromeGlobal.addMessageListener("debug:form", this._sendForm);
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Object.defineProperty(this, "docShell", {
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value: this._chromeGlobal.docShell,
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configurable: true
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});
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}
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ContentActor.prototype = Object.create(TabActor.prototype);
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ContentActor.prototype.constructor = ContentActor;
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Object.defineProperty(ContentActor.prototype, "title", {
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get: function () {
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return this.window.document.title;
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},
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enumerable: true,
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configurable: true
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});
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ContentActor.prototype.exit = function () {
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if (this._sendForm) {
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try {
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this._chromeGlobal.removeMessageListener("debug:form", this._sendForm);
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} catch (e) {
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if (e.result != Cr.NS_ERROR_NULL_POINTER) {
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throw e;
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}
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// In some cases, especially when using messageManagers in non-e10s mode, we reach
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// this point with a dead messageManager which only throws errors but does not
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// seem to indicate in any other way that it is dead.
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}
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this._sendForm = null;
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}
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TabActor.prototype.exit.call(this);
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this._chromeGlobal = null;
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};
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/**
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* On navigation events, our URL and/or title may change, so we update our
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* counterpart in the parent process that participates in the tab list.
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*/
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ContentActor.prototype._sendForm = function () {
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this._chromeGlobal.sendAsyncMessage("debug:form", this.form());
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};
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exports.ContentActor = ContentActor;
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