如何将字符串发送到gnome-shell扩展?

时间:2015-10-07 19:49:52

标签: dbus gnome-shell-extensions gjs

我认为应该使用D-Bus。基本上,我想要那样的东西 - https://wiki.gnome.org/Gjs/Examples/DBusClient - 但反过来说。

在扩展程序中,会有一个函数:

function f(s) { doSomethingWithS; }

运行后会调用此函数:

$ <something> "abc"

...在终端中,s == "abc"

#gnome-shell {@ 1}}上@jasper和@owen提出建议后,我调整了https://github.com/GNOME/gnome-shell/blob/master/js/ui/magnifierDBus.js中的一些代码:

irc.gnome.org

现在,发出后:

const St = imports.gi.St;
const Gio = imports.gi.Gio;
const Lang = imports.lang;
const Main = imports.ui.main;

let text;

function init() {
    text = new St.Label({ text: "0:0", style_class: 'panel-text' });
}

function enable() {
    Main.panel._rightBox.insert_child_at_index(text, 0);
}

function disable() {
    Main.panel._rightBox.remove_child(text);
}

const TextInTaskBarIface = '<node> \
<interface name="com.michalrus.TextInTaskBar"> \
<method name="setText"> \
    <arg type="s" direction="in" /> \
</method> \
</interface> \
</node>';

const TextInTaskBar = new Lang.Class({
    Name: 'TextInTaskBar',

    _init: function() {
        this._dbusImpl = Gio.DBusExportedObject.wrapJSObject(TextInTaskBarIface, this);
        this._dbusImpl.export(Gio.DBus.session, '/com/michalrus/TextInTaskBar');
    },

    setText: function(str) {
        text.text = str;
    }
});

......没有任何反应。

1 个答案:

答案 0 :(得分:6)

最终,gnome-shell扩展D-Bus服务器的工作版本:

const St = imports.gi.St;
const Gio = imports.gi.Gio;
const Lang = imports.lang;
const Main = imports.ui.main;

let text = null;
let textDBusService = null;

function init() {
    text = new St.Label({ text: "0:0", style_class: 'panel-text' });
    textDBusService = new TextInTaskBar();
}

function enable() {
    Main.panel._rightBox.insert_child_at_index(text, 0);
}

function disable() {
    Main.panel._rightBox.remove_child(text);
}

const TextInTaskBarIface = '<node> \
<interface name="com.michalrus.TextInTaskBar"> \
<method name="setText"> \
    <arg type="s" direction="in" /> \
</method> \
</interface> \
</node>';

const TextInTaskBar = new Lang.Class({
    Name: 'TextInTaskBar',

    _init: function() {
    text.text = "abc";
        this._dbusImpl = Gio.DBusExportedObject.wrapJSObject(TextInTaskBarIface, this);
        this._dbusImpl.export(Gio.DBus.session, '/com/michalrus/TextInTaskBar');
    },

    setText: function(str) {
    text.text = str;
    }
});

致电:

$ gdbus call --session --dest org.gnome.Shell --object-path /com/michalrus/TextInTaskBar --method com.michalrus.TextInTaskBar.setText 'some text'