618 lines
24 KiB
JavaScript
618 lines
24 KiB
JavaScript
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/* DING: Desktop Icons New Generation for GNOME Shell
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*
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* Copyright (C) 2019 Sergio Costas (rastersoft@gmail.com)
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* Based on code original (C) Carlos Soriano
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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'use strict';
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import Clutter from 'gi://Clutter'
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import GLib from 'gi://GLib'
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import Gio from 'gi://Gio'
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import Meta from 'gi://Meta'
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import St from 'gi://St'
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import {Extension} from 'resource:///org/gnome/shell/extensions/extension.js';
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import * as Main from 'resource:///org/gnome/shell/ui/main.js'
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import * as EmulateX11 from './emulateX11WindowType.js';
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import * as VisibleArea from './visibleArea.js';
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import * as GnomeShellOverride from './gnomeShellOverride.js';
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const Clipboard = St.Clipboard.get_default();
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const CLIPBOARD_TYPE = St.ClipboardType.CLIPBOARD;
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export default class DING extends Extension {
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constructor(metadata) {
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super(metadata);
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this.DesktopIconsUsableArea = null;
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this.data = {};
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this.data.isEnabled = false;
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this.data.launchDesktopId = 0;
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this.data.currentProcess = null;
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this.data.dbusTimeoutId = 0;
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this.data.switchWorkspaceId = 0;
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this.data.GnomeShellOverride = null;
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/* The constructor of the EmulateX11 class only initializes some
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* internal properties, but nothing else. In fact, it has its own
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* enable() and disable() methods. That's why it could have been
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* created here, in init(). But since the rule seems to be NO CLASS
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* CREATION IN INIT UNDER NO CIRCUMSTANCES...
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*/
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this.data.x11Manager = null;
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this.data.visibleArea = null;
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/* Ensures that there aren't "rogue" processes.
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* This is a safeguard measure for the case of Gnome Shell being
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* relaunched (for example, under X11, with Alt+F2 and R), to kill
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* any old DING instance. That's why it must be here, in init(),
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* and not in enable() or disable() (disable already guarantees that
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* the current instance is killed).
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*/
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this.doKillAllOldDesktopProcesses();
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}
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enable() {
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if (!this.data.GnomeShellOverride) {
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this.data.GnomeShellOverride = new GnomeShellOverride.GnomeShellOverride();
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}
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if (!this.data.x11Manager) {
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this.data.x11Manager = new EmulateX11.EmulateX11WindowType();
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}
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if (!this.DesktopIconsUsableArea) {
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this.DesktopIconsUsableArea = new VisibleArea.VisibleArea();
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this.data.visibleArea = this.DesktopIconsUsableArea;
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}
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// If the desktop is still starting up, we wait until it is ready
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if (Main.layoutManager._startingUp) {
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this.data.startupPreparedId = Main.layoutManager.connect('startup-complete', () => this.innerEnable());
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} else {
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this.data.startupPreparedId = null;
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this.innerEnable();
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}
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}
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disable() {
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this.DesktopIconsUsableArea = null;
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this.data.isEnabled = false;
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this.killCurrentProcess();
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this.data.GnomeShellOverride.disable();
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this.data.x11Manager.disable();
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this.data.visibleArea.disable();
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if (this.data.doCopyId) {
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this.data.doCopy.disconnect(this.data.doCopyId);
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this.data.doCopyId = 0;
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this.data.doCopy = undefined;
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}
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if (this.data.switchWorkspaceId) {
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global.window_manager.disconnect(this.data.switchWorkspaceId);
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this.data.switchWorkspaceId = 0;
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}
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if (this.data.doCutId) {
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this.data.doCut.disconnect(this.data.doCutId);
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this.data.doCutId = 0;
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this.data.doCut = undefined;
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}
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if (this.data.disableTimerId) {
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this.data.disableTimer.disconnect(this.data.disableTimerId);
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this.data.disableTimerId = 0;
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this.data.disableTimer = undefined;
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}
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this.data.desktopGeometry = undefined;
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// disconnect signals only if connected
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if (this.data.dbusConnectionGroupId) {
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this.data.dbusConnection.unexport_action_group(this.data.dbusConnectionGroupId);
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this.data.dbusConnectionGroupId = 0;
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this.data.dbusConnection = undefined;
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}
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if (this.data.dbusConnectionId) {
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Gio.bus_unown_name(this.data.dbusConnectionId);
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this.data.dbusConnectionId = 0;
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}
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this.data.actionGroup = undefined;
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if (this.data.visibleAreaId) {
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this.data.visibleArea.disconnect(this.data.visibleAreaId);
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this.data.visibleAreaId = 0;
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}
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if (this.data.startupPreparedId) {
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Main.layoutManager.disconnect(this.data.startupPreparedId);
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this.data.startupPreparedId = 0;
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}
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if (this.data.monitorsChangedId) {
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Main.layoutManager.disconnect(this.data.monitorsChangedId);
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this.data.monitorsChangedId = 0;
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}
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if (this.data.workareasChangedId) {
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global.display.disconnect(this.data.workareasChangedId);
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this.data.workareasChangedId = 0;
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}
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if (this.data.sizeChangedId) {
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global.window_manager.disconnect(this.data.sizeChangedId);
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this.data.sizeChangedId = 0;
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}
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if (this.data.dbusTimeoutId) {
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GLib.source_remove(this.data.dbusTimeoutId);
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this.data.dbusTimeoutId = 0;
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}
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}
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/**
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* The true code that configures everything and launches the desktop program
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*/
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innerEnable() {
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if (this.data.startupPreparedId !== null) {
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Main.layoutManager.disconnect(this.data.startupPreparedId);
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this.data.startupPreparedId = null;
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}
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this.data.GnomeShellOverride.enable();
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// under X11 we don't need to cheat, so only do all this under wayland
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if (Meta.is_wayland_compositor()) {
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this.data.x11Manager.enable();
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} else {
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this.data.switchWorkspaceId = global.window_manager.connect('switch-workspace', () => {
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let windows = global.display.get_tab_list(Meta.TabList.NORMAL_ALL, global.workspace_manager.get_active_workspace());
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windows = global.display.sort_windows_by_stacking(windows);
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if (windows.length) {
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let topWindow = windows[windows.length - 1];
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topWindow.focus(Clutter.CURRENT_TIME);
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}
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});
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}
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/*
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* If the desktop geometry changes (because a new monitor has been added, for example),
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* we kill the desktop program. It will be relaunched automatically with the new geometry,
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* thus adapting to it on-the-fly.
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*/
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this.data.monitorsChangedId = Main.layoutManager.connect('monitors-changed', () => this.updateDesktopGeometry());
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/*
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* Any change in the workareas must be detected too, for example if the used size
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* changes.
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*/
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this.data.workareasChangedId = global.display.connect('workareas-changed', () => this.updateDesktopGeometry());
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/*
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* This callback allows to detect a change in the working area (like when changing the Scale value)
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*/
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this.data.visibleAreaId = this.data.visibleArea.connect('updated-usable-area', () => this.updateDesktopGeometry());
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this.data.isEnabled = true;
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if (this.data.launchDesktopId) {
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GLib.source_remove(this.data.launchDesktopId);
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}
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/*
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* Due to a problem in the Clipboard API in Gtk3, it is not possible to do the CUT/COPY operation from
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* dynamic languages like Javascript, because one of the methods needed is marked as NOT INTROSPECTABLE
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*
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* https://discourse.gnome.org/t/missing-gtk-clipboard-set-with-data-in-gtk-3/6920
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*
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* The right solution is to migrate DING to Gtk4, where the whole API is available, but that is a very
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* big task, so in the meantime, we take advantage of the fact that the St API, in Gnome Shell, can put
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* binary contents in the clipboard, so we use DBus to notify that we want to do a CUT or a COPY operation,
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* passing the URIs as parameters, and delegate that to the DING Gnome Shell extension. This is easily done
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* with a GLib.SimpleAction.
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*/
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this.data.dbusConnectionId = Gio.bus_own_name(Gio.BusType.SESSION, 'com.rastersoft.dingextension', Gio.BusNameOwnerFlags.NONE, null, (connection, name) => {
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this.data.dbusConnection = connection;
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this.data.doCopy = new Gio.SimpleAction({
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name: 'doCopy',
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parameter_type: new GLib.VariantType('as'),
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});
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this.data.doCut = new Gio.SimpleAction({
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name: 'doCut',
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parameter_type: new GLib.VariantType('as'),
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});
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this.data.disableTimer = new Gio.SimpleAction({
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name: 'disableTimer',
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});
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this.data.desktopGeometry = Gio.SimpleAction.new_stateful('desktopGeometry', new GLib.VariantType('av'), this.getDesktopGeometry());
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this.data.desktopGeometry.set_enabled(true);
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this.data.doCopyId = this.data.doCopy.connect('activate', (action, parameters) => this.manageCutCopy(action, parameters));
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this.data.doCutId = this.data.doCut.connect('activate', (action, parameters) => this.manageCutCopy(action, parameters));
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this.data.disableTimerId = this.data.disableTimer.connect('activate', () => {
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if (this.data.currentProcess && this.data.currentProcess.subprocess) {
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this.data.currentProcess.cancel_timer();
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}
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});
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this.data.actionGroup = new Gio.SimpleActionGroup();
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this.data.actionGroup.add_action(this.data.doCopy);
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this.data.actionGroup.add_action(this.data.doCut);
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this.data.actionGroup.add_action(this.data.disableTimer);
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this.data.actionGroup.add_action(this.data.desktopGeometry);
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this.data.dbusConnectionGroupId = this.data.dbusConnection.export_action_group(
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'/com/rastersoft/dingextension/control',
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this.data.actionGroup
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);
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this.launchDesktop();
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}, null);
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}
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/*
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* Before Gnome Shell 40, St API couldn't access binary data in the clipboard, only text data. Also, the
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* original Desktop Icons was a pure extension, so it was limited to what Clutter and St offered. That was
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* the reason why Nautilus accepted a text format for CUT and COPY operations in the form
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*
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* x-special/nautilus-clipboard
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* OPERATION
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* FILE_URI
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* [FILE_URI]
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* [...]
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*
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* In Gnome Shell 40, St was enhanced and now it supports binary data; that's why Nautilus migrated to a
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* binary format identified by the atom 'x-special/gnome-copied-files', where the CUT or COPY operation is
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* shared.
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*
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*/
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/**
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*
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* @param action
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* @param parameters
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*/
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manageCutCopy(action, parameters) {
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let content = '';
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if (action.name == 'doCut') {
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content += 'cut\n';
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} else {
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content += 'copy\n';
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}
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let first = true;
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for (let file of parameters.recursiveUnpack()) {
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if (!first) {
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content += '\n';
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}
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first = false;
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content += file;
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}
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let obj = new TextEncoder();
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Clipboard.set_content(CLIPBOARD_TYPE, 'x-special/gnome-copied-files', new GLib.Bytes(obj.encode(content)));
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}
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/**
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* Kills the current desktop program
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*/
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killCurrentProcess() {
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if (this.data.launchDesktopId) {
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GLib.source_remove(this.data.launchDesktopId);
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this.data.launchDesktopId = 0;
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}
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// kill the desktop program. It will be reloaded automatically.
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if (this.data.currentProcess && this.data.currentProcess.subprocess) {
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this.data.currentProcess.cancel_timer();
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this.data.currentProcess.cancellable.cancel();
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this.data.currentProcess.subprocess.send_signal(15);
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}
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this.data.currentProcess = null;
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this.data.x11Manager.setWaylandClient(null);
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}
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/**
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*
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*/
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updateDesktopGeometry() {
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if (this.data.actionGroup && (Main.layoutManager.monitors.length != 0)) {
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this.data.actionGroup.change_action_state('desktopGeometry', this.getDesktopGeometry());
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}
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}
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/**
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*
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*/
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getDesktopGeometry() {
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let desktopList = [];
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let ws = global.workspace_manager.get_workspace_by_index(0);
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for (let monitorIndex = 0; monitorIndex < Main.layoutManager.monitors.length; monitorIndex++) {
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let area = this.data.visibleArea.getMonitorGeometry(ws, monitorIndex);
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let desktopListElement = new GLib.Variant('a{sd}', {
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'x': area.x,
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'y': area.y,
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'width': area.width,
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'height': area.height,
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'zoom': area.scale,
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'marginTop': area.marginTop,
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'marginBottom': area.marginBottom,
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'marginLeft': area.marginLeft,
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'marginRight': area.marginRight,
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monitorIndex,
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'primaryMonitor': Main.layoutManager.primaryIndex,
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});
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desktopList.push(desktopListElement);
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}
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return new GLib.Variant('av', desktopList);
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}
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/**
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* This function checks all the processes in the system and kills those
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* that are a desktop manager from the current user (but not others).
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* This allows to avoid having several ones in case gnome shell resets,
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* or other odd cases. It requires the /proc virtual filesystem, but
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* doesn't fail if it doesn't exist.
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*/
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/**
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*
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*/
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doKillAllOldDesktopProcesses() {
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let procFolder = Gio.File.new_for_path('/proc');
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if (!procFolder.query_exists(null)) {
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return;
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}
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let fileEnum = procFolder.enumerate_children('standard::*', Gio.FileQueryInfoFlags.NONE, null);
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let info;
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while ((info = fileEnum.next_file(null))) {
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let filename = info.get_name();
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if (!filename) {
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break;
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}
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let processPath = GLib.build_filenamev(['/proc', filename, 'cmdline']);
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let processUser = Gio.File.new_for_path(processPath);
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if (!processUser.query_exists(null)) {
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continue;
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}
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let [binaryData, etag] = processUser.load_bytes(null);
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let contents = '';
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let readData = binaryData.get_data();
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for (let i = 0; i < readData.length; i++) {
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if (readData[i] < 32) {
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contents += ' ';
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} else {
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contents += String.fromCharCode(readData[i]);
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}
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}
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let path = `gjs ${GLib.build_filenamev([this.path, 'app', 'ding.js'])}`;
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if (contents.startsWith(path)) {
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let proc = new Gio.Subprocess({argv: ['/bin/kill', filename]});
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proc.init(null);
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proc.wait(null);
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}
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}
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}
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/**
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*
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* @param reloadTime
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*/
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doRelaunch(reloadTime) {
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this.data.currentProcess = null;
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this.data.x11Manager.setWaylandClient(null);
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if (this.data.isEnabled) {
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if (this.data.launchDesktopId) {
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GLib.source_remove(this.data.launchDesktopId);
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}
|
||
|
this.data.launchDesktopId = GLib.timeout_add(GLib.PRIORITY_DEFAULT, reloadTime, () => {
|
||
|
this.data.launchDesktopId = 0;
|
||
|
this.launchDesktop();
|
||
|
return false;
|
||
|
});
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Launches the desktop program, passing to it the current desktop geometry for each monitor
|
||
|
* and the path where it is stored. It also monitors it, to relaunch it in case it dies or is
|
||
|
* killed. Finally, it reads STDOUT and STDERR and redirects them to the journal, to help to
|
||
|
* debug it.
|
||
|
*/
|
||
|
launchDesktop() {
|
||
|
console.log('Launching DING process');
|
||
|
let argv = [];
|
||
|
argv.push(GLib.build_filenamev([this.path, 'app', 'ding.js']));
|
||
|
// Specify that it must work as true desktop
|
||
|
argv.push('-E');
|
||
|
// The path. Allows the program to find translations, settings and modules.
|
||
|
argv.push('-P');
|
||
|
argv.push(GLib.build_filenamev([this.path, 'app']));
|
||
|
|
||
|
this.data.currentProcess = new LaunchSubprocess(0, 'DING');
|
||
|
this.data.currentProcess.set_cwd(GLib.get_home_dir());
|
||
|
if (this.data.currentProcess.spawnv(argv) === null) {
|
||
|
this.doRelaunch(1000);
|
||
|
return;
|
||
|
}
|
||
|
this.data.x11Manager.setWaylandClient(this.data.currentProcess);
|
||
|
this.data.launchTime = GLib.get_monotonic_time();
|
||
|
|
||
|
/*
|
||
|
* If the desktop process dies, wait 100ms and relaunch it, unless the exit status is different than
|
||
|
* zero, in which case it will wait one second. This is done this way to avoid relaunching the desktop
|
||
|
* too fast if it has a bug that makes it fail continuously, avoiding filling the journal too fast.
|
||
|
*/
|
||
|
this.data.currentProcess.subprocess.wait_async(null, (obj, res) => {
|
||
|
let delta = GLib.get_monotonic_time() - this.data.launchTime;
|
||
|
if (delta < 1000000) {
|
||
|
// If the process is dying over and over again, ensure that it isn't respawn faster than once per second
|
||
|
var reloadTime = 1000;
|
||
|
} else {
|
||
|
// but if the process just died after having run for at least one second, reload it ASAP
|
||
|
var reloadTime = 1;
|
||
|
}
|
||
|
obj.wait_finish(res);
|
||
|
if (!this.data.currentProcess || obj !== this.data.currentProcess.subprocess) {
|
||
|
return;
|
||
|
}
|
||
|
if (obj.get_if_exited()) {
|
||
|
obj.get_exit_status();
|
||
|
}
|
||
|
this.doRelaunch(reloadTime);
|
||
|
});
|
||
|
}
|
||
|
}
|
||
|
/**
|
||
|
* This class encapsulates the code to launch a subprocess that can detect whether a window belongs to it
|
||
|
* It only accepts to do it under Wayland, because under X11 there is no need to do these tricks
|
||
|
*
|
||
|
* It is compatible with https://gitlab.gnome.org/GNOME/mutter/merge_requests/754 to simplify the code
|
||
|
*
|
||
|
* @param {int} flags Flags for the SubprocessLauncher class
|
||
|
* @param {string} process_id An string id for the debug output
|
||
|
*/
|
||
|
class LaunchSubprocess {
|
||
|
constructor(flags, process_id) {
|
||
|
this._process_id = process_id;
|
||
|
this.cancellable = new Gio.Cancellable();
|
||
|
this._launcher = new Gio.SubprocessLauncher({flags: flags | Gio.SubprocessFlags.STDOUT_PIPE | Gio.SubprocessFlags.STDERR_MERGE});
|
||
|
if (Meta.is_wayland_compositor()) {
|
||
|
try {
|
||
|
this._waylandClient = Meta.WaylandClient.new(this._launcher);
|
||
|
} catch (e) {
|
||
|
this._waylandClient = Meta.WaylandClient.new(global.context,
|
||
|
this._launcher);
|
||
|
}
|
||
|
}
|
||
|
this.subprocess = null;
|
||
|
this.process_running = false;
|
||
|
this._launch_timer = 0;
|
||
|
this._waiting_for_windows = 0;
|
||
|
}
|
||
|
|
||
|
spawnv(argv) {
|
||
|
try {
|
||
|
if (Meta.is_wayland_compositor()) {
|
||
|
this.subprocess = this._waylandClient.spawnv(global.display, argv);
|
||
|
} else {
|
||
|
this.subprocess = this._launcher.spawnv(argv);
|
||
|
}
|
||
|
} catch (e) {
|
||
|
this.subprocess = null;
|
||
|
console.log(`Error while trying to launch DING process: ${e.message}\n${e.stack}`);
|
||
|
}
|
||
|
// This is for GLib 2.68 or greater
|
||
|
if (this._launcher.close) {
|
||
|
this._launcher.close();
|
||
|
}
|
||
|
this._launcher = null;
|
||
|
if (this.subprocess) {
|
||
|
/*
|
||
|
* It reads STDOUT and STDERR and sends it to the journal using console.log(). This allows to
|
||
|
* have any error from the desktop app in the same journal than other extensions. Every line from
|
||
|
* the desktop program is prepended with the "process_id" parameter sent in the constructor.
|
||
|
*/
|
||
|
this._dataInputStream = Gio.DataInputStream.new(this.subprocess.get_stdout_pipe());
|
||
|
this.read_output();
|
||
|
this.subprocess.wait_async(this.cancellable, () => {
|
||
|
this.process_running = false;
|
||
|
this._dataInputStream = null;
|
||
|
this.cancellable = null;
|
||
|
if (this._launch_timer != 0) {
|
||
|
GLib.source_remove(this._launch_timer);
|
||
|
this._launch_timer = 0;
|
||
|
this._waiting_for_windows = 0;
|
||
|
}
|
||
|
});
|
||
|
this.process_running = true;
|
||
|
if (Meta.is_wayland_compositor() && (Main.layoutManager.monitors.length != 0)) {
|
||
|
// This ensures that, if the DING window isn't detected in three seconds
|
||
|
// after launch, the desktop will be killed and, thus, relaunched again.
|
||
|
this._waiting_for_windows = Main.layoutManager.monitors.length;
|
||
|
this._launch_timer = GLib.timeout_add(GLib.PRIORITY_DEFAULT, 3000, () => {
|
||
|
this._launch_timer = 0;
|
||
|
this.subprocess.force_exit();
|
||
|
return false;
|
||
|
});
|
||
|
}
|
||
|
}
|
||
|
return this.subprocess;
|
||
|
}
|
||
|
|
||
|
cancel_timer() {
|
||
|
if (this._launch_timer != 0) {
|
||
|
GLib.source_remove(this._launch_timer);
|
||
|
this._launch_timer = 0;
|
||
|
this._waiting_for_windows = 0;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
set_cwd(cwd) {
|
||
|
this._launcher.set_cwd(cwd);
|
||
|
}
|
||
|
|
||
|
read_output() {
|
||
|
if (!this._dataInputStream) {
|
||
|
return;
|
||
|
}
|
||
|
this._dataInputStream.read_line_async(GLib.PRIORITY_DEFAULT, this.cancellable, (object, res) => {
|
||
|
try {
|
||
|
const [output, length] = object.read_line_finish_utf8(res);
|
||
|
if (length) {
|
||
|
print(`${this._process_id}: ${output}`);
|
||
|
}
|
||
|
} catch (e) {
|
||
|
if (e.matches(Gio.IOErrorEnum, Gio.IOErrorEnum.CANCELLED)) {
|
||
|
return;
|
||
|
}
|
||
|
logError(e, `${this._process_id}_Error`);
|
||
|
}
|
||
|
|
||
|
this.read_output();
|
||
|
});
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Queries whether the passed window belongs to the launched subprocess or not.
|
||
|
*
|
||
|
* @param {MetaWindow} window The window to check.
|
||
|
*/
|
||
|
query_window_belongs_to(window) {
|
||
|
if (!Meta.is_wayland_compositor()) {
|
||
|
return false;
|
||
|
}
|
||
|
if (!this.process_running) {
|
||
|
return false;
|
||
|
}
|
||
|
try {
|
||
|
let ownsWindow = this._waylandClient.owns_window(window);
|
||
|
if (ownsWindow && (this._launch_timer != 0) && (this._waiting_for_windows != 0)) {
|
||
|
console.log(`Received notification for window. ${this._waiting_for_windows - 1} notifications remaining.`);
|
||
|
this._waiting_for_windows--;
|
||
|
if (this._waiting_for_windows == 0) {
|
||
|
GLib.source_remove(this._launch_timer);
|
||
|
this._launch_timer = 0;
|
||
|
}
|
||
|
}
|
||
|
return ownsWindow;
|
||
|
} catch (error) {
|
||
|
console.log(`Exception error: ${error.message}\n${error.stack}`);
|
||
|
return false;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
show_in_window_list(window) {
|
||
|
if (Meta.is_wayland_compositor() && this.process_running) {
|
||
|
this._waylandClient.show_in_window_list(window);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
hide_from_window_list(window) {
|
||
|
if (Meta.is_wayland_compositor() && this.process_running) {
|
||
|
this._waylandClient.hide_from_window_list(window);
|
||
|
}
|
||
|
}
|
||
|
};
|