276 lines
10 KiB
JavaScript
276 lines
10 KiB
JavaScript
|
// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
|
||
|
|
|
||
|
|
const Gio = imports.gi.Gio;
|
||
|
|
const GLib = imports.gi.GLib;
|
||
|
|
const Lang = imports.lang;
|
||
|
|
const Params = imports.misc.params;
|
||
|
|
const Signals = imports.signals;
|
||
|
|
|
||
|
|
// Specified in the D-Bus specification here:
|
||
|
|
// http://dbus.freedesktop.org/doc/dbus-specification.html#standard-interfaces-objectmanager
|
||
|
|
const ObjectManagerIface = <interface name="org.freedesktop.DBus.ObjectManager">
|
||
|
|
<method name="GetManagedObjects">
|
||
|
|
<arg name="objects" type="a{oa{sa{sv}}}" direction="out"/>
|
||
|
|
</method>
|
||
|
|
<signal name="InterfacesAdded">
|
||
|
|
<arg name="objectPath" type="o"/>
|
||
|
|
<arg name="interfaces" type="a{sa{sv}}" />
|
||
|
|
</signal>
|
||
|
|
<signal name="InterfacesRemoved">
|
||
|
|
<arg name="objectPath" type="o"/>
|
||
|
|
<arg name="interfaces" type="as" />
|
||
|
|
</signal>
|
||
|
|
</interface>
|
||
|
|
|
||
|
|
const ObjectManagerInfo = Gio.DBusInterfaceInfo.new_for_xml(ObjectManagerIface);
|
||
|
|
|
||
|
|
const ObjectManager = new Lang.Class({
|
||
|
|
Name: 'ObjectManager',
|
||
|
|
_init: function(params) {
|
||
|
|
params = Params.parse(params, { connection: null,
|
||
|
|
name: null,
|
||
|
|
objectPath: null,
|
||
|
|
knownInterfaces: null,
|
||
|
|
cancellable: null,
|
||
|
|
onLoaded: null });
|
||
|
|
|
||
|
|
this._connection = params.connection;
|
||
|
|
this._serviceName = params.name;
|
||
|
|
this._managerPath = params.objectPath;
|
||
|
|
this._cancellable = params.cancellable;
|
||
|
|
|
||
|
|
this._managerProxy = new Gio.DBusProxy({ g_connection: this._connection,
|
||
|
|
g_interface_name: ObjectManagerInfo.name,
|
||
|
|
g_interface_info: ObjectManagerInfo,
|
||
|
|
g_name: this._serviceName,
|
||
|
|
g_object_path: this._managerPath,
|
||
|
|
g_flags: Gio.DBusProxyFlags.NONE });
|
||
|
|
|
||
|
|
this._interfaceInfos = {};
|
||
|
|
this._objects = {};
|
||
|
|
this._interfaces = {};
|
||
|
|
this._pendingProxies = [];
|
||
|
|
this._onLoaded = params.onLoaded;
|
||
|
|
|
||
|
|
if (params.knownInterfaces)
|
||
|
|
this._registerInterfaces(params.knownInterfaces);
|
||
|
|
|
||
|
|
this._managerProxy.init_async(GLib.PRIORITY_DEFAULT,
|
||
|
|
this._cancellable,
|
||
|
|
Lang.bind(this, this._onManagerProxyLoaded));
|
||
|
|
},
|
||
|
|
|
||
|
|
_addInterface: function(objectPath, interfaceName, onFinished) {
|
||
|
|
let info = this._interfaceInfos[interfaceName];
|
||
|
|
|
||
|
|
if (!info)
|
||
|
|
return;
|
||
|
|
|
||
|
|
let proxy = new Gio.DBusProxy({ g_connection: this._connection,
|
||
|
|
g_name: this._serviceName,
|
||
|
|
g_object_path: objectPath,
|
||
|
|
g_interface_name: interfaceName,
|
||
|
|
g_interface_info: info,
|
||
|
|
g_flags: Gio.DBusProxyFlags.NONE });
|
||
|
|
|
||
|
|
this._pendingProxies.push(proxy);
|
||
|
|
|
||
|
|
proxy.init_async(GLib.PRIORITY_DEFAULT,
|
||
|
|
this._cancellable,
|
||
|
|
Lang.bind(this, function(initable, result) {
|
||
|
|
let index = this._pendingProxies.indexOf(proxy);
|
||
|
|
|
||
|
|
if (index >= 0)
|
||
|
|
this._pendingProxies.splice(index, 1);
|
||
|
|
|
||
|
|
let error = null;
|
||
|
|
try {
|
||
|
|
initable.init_finish(result);
|
||
|
|
} catch(e) {
|
||
|
|
logError(e, 'could not initialize proxy for interface ' + interfaceName);
|
||
|
|
|
||
|
|
if (onFinished)
|
||
|
|
onFinished();
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
let isNewObject;
|
||
|
|
|
||
|
|
if (!this._objects[objectPath]) {
|
||
|
|
this._objects[objectPath] = {};
|
||
|
|
isNewObject = true;
|
||
|
|
} else {
|
||
|
|
isNewObject = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
this._objects[objectPath][interfaceName] = proxy;
|
||
|
|
|
||
|
|
if (!this._interfaces[interfaceName])
|
||
|
|
this._interfaces[interfaceName] = [];
|
||
|
|
|
||
|
|
this._interfaces[interfaceName].push(proxy);
|
||
|
|
|
||
|
|
if (isNewObject)
|
||
|
|
this.emit('object-added', objectPath);
|
||
|
|
|
||
|
|
this.emit('interface-added', interfaceName, proxy);
|
||
|
|
|
||
|
|
if (onFinished)
|
||
|
|
onFinished();
|
||
|
|
}));
|
||
|
|
},
|
||
|
|
|
||
|
|
_removeInterface: function(objectPath, interfaceName) {
|
||
|
|
if (!this._objects[objectPath])
|
||
|
|
return;
|
||
|
|
|
||
|
|
let proxy = this._objects[objectPath][interfaceName];
|
||
|
|
|
||
|
|
if (this._interfaces[interfaceName]) {
|
||
|
|
let index = this._interfaces[interfaceName].indexOf(proxy);
|
||
|
|
|
||
|
|
if (index >= 0)
|
||
|
|
this._interfaces[interfaceName].splice(index, 1);
|
||
|
|
|
||
|
|
if (this._interfaces[interfaceName].length == 0)
|
||
|
|
delete this._interfaces[interfaceName];
|
||
|
|
}
|
||
|
|
|
||
|
|
this.emit('interface-removed', interfaceName, proxy);
|
||
|
|
|
||
|
|
this._objects[objectPath][interfaceName] = null;
|
||
|
|
|
||
|
|
if (Object.keys(this._objects[objectPath]).length == 0) {
|
||
|
|
delete this._objects[objectPath];
|
||
|
|
this.emit('object-removed', objectPath);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
_onManagerProxyLoaded: function(initable, result) {
|
||
|
|
let error = null;
|
||
|
|
try {
|
||
|
|
initable.init_finish(result);
|
||
|
|
} catch(e) {
|
||
|
|
logError(e, 'could not initialize object manager for object ' + params.name);
|
||
|
|
|
||
|
|
if (this._onLoaded)
|
||
|
|
this._onLoaded();
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
this._managerProxy.connectSignal('InterfacesAdded',
|
||
|
|
Lang.bind(this, function(objectManager, sender, [objectPath, interfaces]) {
|
||
|
|
let interfaceNames = Object.keys(interfaces);
|
||
|
|
for (let i = 0; i < interfaceNames.length; i++)
|
||
|
|
this._addInterface(objectPath, interfaceNames[i]);
|
||
|
|
}));
|
||
|
|
this._managerProxy.connectSignal('InterfacesRemoved',
|
||
|
|
Lang.bind(this, function(objectManager, sender, [objectPath, interfaceNames]) {
|
||
|
|
for (let i = 0; i < interfaceNames.length; i++)
|
||
|
|
this._removeInterface(objectPath, interfaceNames[i]);
|
||
|
|
}));
|
||
|
|
|
||
|
|
|
||
|
|
this._managerProxy.GetManagedObjectsRemote(Lang.bind(this, function(result, error) {
|
||
|
|
if (!result) {
|
||
|
|
if (error) {
|
||
|
|
logError(error, 'could not get remote objects for service ' + this._serviceName + ' path ' + this._managerPath);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (this._onLoaded)
|
||
|
|
this._onLoaded();
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
let [objects] = result;
|
||
|
|
|
||
|
|
if (Object.keys(this._interfaceInfos).length == 0) {
|
||
|
|
if (this._onLoaded)
|
||
|
|
this._onLoaded();
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
let numLoadInhibitors = 0;
|
||
|
|
|
||
|
|
// First inhibitor is to prevent onLoaded from getting
|
||
|
|
// called until all interfaces have started being added.
|
||
|
|
// Subsequent inhibitors are to prevent onLoaded from getting
|
||
|
|
// called until all interfaces finish getting added.
|
||
|
|
numLoadInhibitors++;
|
||
|
|
let objectPaths = Object.keys(objects);
|
||
|
|
for (let i = 0; i < objectPaths.length; i++) {
|
||
|
|
let objectPath = objectPaths[i];
|
||
|
|
let object = objects[objectPath];
|
||
|
|
|
||
|
|
let interfaceNames = Object.keys(object);
|
||
|
|
for (let j = 0; j < interfaceNames.length; j++) {
|
||
|
|
let interfaceName = interfaceNames[j];
|
||
|
|
|
||
|
|
numLoadInhibitors++;
|
||
|
|
this._addInterface(objectPath,
|
||
|
|
interfaceName,
|
||
|
|
Lang.bind(this, function() {
|
||
|
|
numLoadInhibitors--;
|
||
|
|
|
||
|
|
if (numLoadInhibitors == 0) {
|
||
|
|
if (this._onLoaded)
|
||
|
|
this._onLoaded();
|
||
|
|
}
|
||
|
|
}));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
numLoadInhibitors--;
|
||
|
|
|
||
|
|
if (numLoadInhibitors == 0) {
|
||
|
|
if (this._onLoaded)
|
||
|
|
this._onLoaded();
|
||
|
|
}
|
||
|
|
}));
|
||
|
|
},
|
||
|
|
|
||
|
|
_registerInterfaces: function(interfaces) {
|
||
|
|
for (let i = 0; i < interfaces.length; i++) {
|
||
|
|
let info = Gio.DBusInterfaceInfo.new_for_xml(interfaces[i]);
|
||
|
|
|
||
|
|
this._interfaceInfos[info.name] = info;
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
getProxy: function(objectPath, interfaceName) {
|
||
|
|
let object = this._objects[objectPath];
|
||
|
|
|
||
|
|
if (!object)
|
||
|
|
return null;
|
||
|
|
|
||
|
|
return object[interfaceName];
|
||
|
|
},
|
||
|
|
|
||
|
|
getProxiesForInterface: function(interfaceName) {
|
||
|
|
let proxyList = this._interfaces[interfaceName];
|
||
|
|
|
||
|
|
if (!proxyList)
|
||
|
|
return [];
|
||
|
|
|
||
|
|
return proxyList;
|
||
|
|
},
|
||
|
|
|
||
|
|
getAllProxies: function() {
|
||
|
|
let proxies = [];
|
||
|
|
|
||
|
|
let objectPaths = Object.keys(this._objects);
|
||
|
|
for (let i = 0; i < objectPaths.length; i++) {
|
||
|
|
let object = this._objects[objectPaths];
|
||
|
|
|
||
|
|
let interfaceNames = Object.keys(object);
|
||
|
|
for (let j = 0; i < interfaceNames.length; i++) {
|
||
|
|
let interfaceName = interfaceNames[i];
|
||
|
|
if (object[interfaceName])
|
||
|
|
proxies.push(object(interfaceName));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return proxies;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
Signals.addSignalMethods(ObjectManager.prototype);
|