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/* 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/. */
"use strict";
var { Cr } = require("chrome");
var { TabActor } = require("devtools/server/actors/webbrowser");
/**
* Tab actor for documents living in a child process.
*
* Depends on TabActor, defined in webbrowser.js.
*/
/**
* Creates a tab actor for handling requests to the single tab, like
* attaching and detaching. ContentActor respects the actor factories
* registered with DebuggerServer.addTabActor.
*
* @param connection DebuggerServerConnection
* The conection to the client.
* @param chromeGlobal
* The content script global holding |content| and |docShell| properties for a tab.
* @param prefix
* the prefix used in protocol to create IDs for each actor.
* Used as ID identifying this particular TabActor from the parent process.
*/
function ContentActor(connection, chromeGlobal, prefix)
{
this._chromeGlobal = chromeGlobal;
this._prefix = prefix;
TabActor.call(this, connection, chromeGlobal);
this.traits.reconfigure = false;
this._sendForm = this._sendForm.bind(this);
this._chromeGlobal.addMessageListener("debug:form", this._sendForm);
Object.defineProperty(this, "docShell", {
value: this._chromeGlobal.docShell,
configurable: true
});
}
ContentActor.prototype = Object.create(TabActor.prototype);
ContentActor.prototype.constructor = ContentActor;
Object.defineProperty(ContentActor.prototype, "title", {
get: function () {
return this.window.document.title;
},
enumerable: true,
configurable: true
});
ContentActor.prototype.exit = function () {
if (this._sendForm) {
try {
this._chromeGlobal.removeMessageListener("debug:form", this._sendForm);
} catch (e) {
if (e.result != Cr.NS_ERROR_NULL_POINTER) {
throw e;
}
// In some cases, especially when using messageManagers in non-e10s mode, we reach
// this point with a dead messageManager which only throws errors but does not
// seem to indicate in any other way that it is dead.
}
this._sendForm = null;
}
TabActor.prototype.exit.call(this);
this._chromeGlobal = null;
};
/**
* On navigation events, our URL and/or title may change, so we update our
* counterpart in the parent process that participates in the tab list.
*/
ContentActor.prototype._sendForm = function () {
this._chromeGlobal.sendAsyncMessage("debug:form", this.form());
};
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