Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 424 insertions, 0 deletions

diff --git a/widget/gtk/nsAppShell.cpp b/widget/gtk/nsAppShell.cpp
new file mode 100644
index 0000000000..bea837605f
--- /dev/null
+++ b/widget/gtk/nsAppShell.cpp
@@ -0,0 +1,424 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <gdk/gdk.h>
+#include "nsAppShell.h"
+#include "nsBaseAppShell.h"
+#include "nsWindow.h"
+#include "mozilla/Logging.h"
+#include "prenv.h"
+#include "mozilla/BackgroundHangMonitor.h"
+#include "mozilla/Hal.h"
+#include "mozilla/ProfilerLabels.h"
+#include "mozilla/ProfilerThreadSleep.h"
+#include "mozilla/Unused.h"
+#include "mozilla/GUniquePtr.h"
+#include "mozilla/WidgetUtils.h"
+#include "nsIPowerManagerService.h"
+#ifdef MOZ_ENABLE_DBUS
+#  include <dbus/dbus-glib-lowlevel.h>
+#  include <gio/gio.h>
+#  include "WakeLockListener.h"
+#  include "nsIObserverService.h"
+#endif
+#include "gfxPlatform.h"
+#include "nsAppRunner.h"
+#include "mozilla/XREAppData.h"
+#include "ScreenHelperGTK.h"
+#include "HeadlessScreenHelper.h"
+#include "mozilla/widget/ScreenManager.h"
+#ifdef MOZ_WAYLAND
+#  include "nsWaylandDisplay.h"
+#endif
+
+using namespace mozilla;
+using mozilla::widget::HeadlessScreenHelper;
+using mozilla::widget::ScreenHelperGTK;
+using mozilla::widget::ScreenManager;
+
+#define NOTIFY_TOKEN 0xFA
+
+LazyLogModule gWidgetLog("Widget");
+LazyLogModule gWidgetDragLog("WidgetDrag");
+LazyLogModule gWidgetWaylandLog("WidgetWayland");
+LazyLogModule gWidgetPopupLog("WidgetPopup");
+LazyLogModule gWidgetVsync("WidgetVsync");
+LazyLogModule gDmabufLog("Dmabuf");
+LazyLogModule gClipboardLog("WidgetClipboard");
+
+static GPollFunc sPollFunc;
+
+// Wrapper function to disable hang monitoring while waiting in poll().
+static gint PollWrapper(GPollFD* aUfds, guint aNfsd, gint aTimeout) {
+  if (aTimeout == 0) {
+    // When the timeout is 0, there is no wait, so no point in notifying
+    // the BackgroundHangMonitor and the profiler.
+    return (*sPollFunc)(aUfds, aNfsd, aTimeout);
+  }
+
+  mozilla::BackgroundHangMonitor().NotifyWait();
+  gint result;
+  {
+    gint timeout = aTimeout;
+    gint64 begin = 0;
+    if (aTimeout != -1) {
+      begin = g_get_monotonic_time();
+    }
+
+    AUTO_PROFILER_LABEL("PollWrapper", IDLE);
+    AUTO_PROFILER_THREAD_SLEEP;
+    do {
+      result = (*sPollFunc)(aUfds, aNfsd, timeout);
+
+      // The result will be -1 with the EINTR error if the poll was interrupted
+      // by a signal, typically the signal sent by the profiler to sample the
+      // process. We are only done waiting if we are not in that case.
+      if (result != -1 || errno != EINTR) {
+        break;
+      }
+
+      if (aTimeout != -1) {
+        // Adjust the timeout to account for the time already spent waiting.
+        gint elapsedSinceBegin = (g_get_monotonic_time() - begin) / 1000;
+        if (elapsedSinceBegin < aTimeout) {
+          timeout = aTimeout - elapsedSinceBegin;
+        } else {
+          // poll returns 0 to indicate the call timed out before any fd
+          // became ready.
+          result = 0;
+          break;
+        }
+      }
+    } while (true);
+  }
+  mozilla::BackgroundHangMonitor().NotifyActivity();
+  return result;
+}
+
+// Emit resume-events on GdkFrameClock if flush-events has not been
+// balanced by resume-events at dispose.
+// For https://bugzilla.gnome.org/show_bug.cgi?id=742636
+static decltype(GObjectClass::constructed) sRealGdkFrameClockConstructed;
+static decltype(GObjectClass::dispose) sRealGdkFrameClockDispose;
+static GQuark sPendingResumeQuark;
+
+static void OnFlushEvents(GObject* clock, gpointer) {
+  g_object_set_qdata(clock, sPendingResumeQuark, GUINT_TO_POINTER(1));
+}
+
+static void OnResumeEvents(GObject* clock, gpointer) {
+  g_object_set_qdata(clock, sPendingResumeQuark, nullptr);
+}
+
+static void WrapGdkFrameClockConstructed(GObject* object) {
+  sRealGdkFrameClockConstructed(object);
+
+  g_signal_connect(object, "flush-events", G_CALLBACK(OnFlushEvents), nullptr);
+  g_signal_connect(object, "resume-events", G_CALLBACK(OnResumeEvents),
+                   nullptr);
+}
+
+static void WrapGdkFrameClockDispose(GObject* object) {
+  if (g_object_get_qdata(object, sPendingResumeQuark)) {
+    g_signal_emit_by_name(object, "resume-events");
+  }
+
+  sRealGdkFrameClockDispose(object);
+}
+
+/*static*/
+gboolean nsAppShell::EventProcessorCallback(GIOChannel* source,
+                                            GIOCondition condition,
+                                            gpointer data) {
+  nsAppShell* self = static_cast<nsAppShell*>(data);
+
+  unsigned char c;
+  Unused << read(self->mPipeFDs[0], &c, 1);
+  NS_ASSERTION(c == (unsigned char)NOTIFY_TOKEN, "wrong token");
+
+  self->NativeEventCallback();
+  return TRUE;
+}
+
+nsAppShell::~nsAppShell() {
+#ifdef MOZ_ENABLE_DBUS
+  StopDBusListening();
+#endif
+  mozilla::hal::Shutdown();
+
+  if (mTag) g_source_remove(mTag);
+  if (mPipeFDs[0]) close(mPipeFDs[0]);
+  if (mPipeFDs[1]) close(mPipeFDs[1]);
+}
+
+#ifdef MOZ_ENABLE_DBUS
+static void SessionSleepCallback(DBusGProxy* aProxy, gboolean aSuspend,
+                                 gpointer data) {
+  nsCOMPtr<nsIObserverService> observerService =
+      mozilla::services::GetObserverService();
+  if (!observerService) {
+    return;
+  }
+
+  if (aSuspend) {
+    // Post sleep_notification
+    observerService->NotifyObservers(nullptr, NS_WIDGET_SLEEP_OBSERVER_TOPIC,
+                                     nullptr);
+  } else {
+    // Post wake_notification
+    observerService->NotifyObservers(nullptr, NS_WIDGET_WAKE_OBSERVER_TOPIC,
+                                     nullptr);
+  }
+}
+
+static void TimedatePropertiesChangedCallback(DBusGProxy* aProxy,
+                                              char* interface,
+                                              GHashTable* aChanged,
+                                              char** aInvalidated,
+                                              gpointer aData) {
+  // dbus signals are not fine-grained enough for us to only react to timezone
+  // changes, so we need to ensure that timezone is one of the properties
+  // changed.
+  if (g_hash_table_contains(aChanged, "Timezone")) {
+    nsBaseAppShell::OnSystemTimezoneChange();
+  }
+}
+
+static DBusHandlerResult ConnectionSignalFilter(DBusConnection* aConnection,
+                                                DBusMessage* aMessage,
+                                                void* aData) {
+  if (dbus_message_is_signal(aMessage, DBUS_INTERFACE_LOCAL, "Disconnected")) {
+    auto* appShell = static_cast<nsAppShell*>(aData);
+    appShell->StopDBusListening();
+    // We do not return DBUS_HANDLER_RESULT_HANDLED here because the connection
+    // might be shared and some other filters might want to do something.
+  }
+
+  return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+}
+
+// Based on
+// https://github.com/lcp/NetworkManager/blob/240f47c892b4e935a3e92fc09eb15163d1fa28d8/src/nm-sleep-monitor-systemd.c
+// Use login1 to signal sleep and wake notifications.
+void nsAppShell::StartDBusListening() {
+  GUniquePtr<GError> error;
+  mDBusConnection = dbus_g_bus_get(DBUS_BUS_SYSTEM, getter_Transfers(error));
+  if (!mDBusConnection) {
+    NS_WARNING(nsPrintfCString("gds: Failed to open connection to bus %s\n",
+                               error->message)
+                   .get());
+    return;
+  }
+
+  DBusConnection* dbusConnection =
+      dbus_g_connection_get_connection(mDBusConnection);
+
+  // Make sure we do not exit the entire program if DBus connection gets
+  // lost.
+  dbus_connection_set_exit_on_disconnect(dbusConnection, false);
+
+  // Listening to signals the DBus connection is going to get so we will
+  // know when it is lost and we will be able to disconnect cleanly.
+  dbus_connection_add_filter(dbusConnection, ConnectionSignalFilter, this,
+                             nullptr);
+
+  mLogin1Proxy = dbus_g_proxy_new_for_name(
+      mDBusConnection, "org.freedesktop.login1", "/org/freedesktop/login1",
+      "org.freedesktop.login1.Manager");
+
+  if (!mLogin1Proxy) {
+    NS_WARNING("gds: error creating login dbus proxy\n");
+    return;
+  }
+
+  dbus_g_proxy_add_signal(mLogin1Proxy, "PrepareForSleep", G_TYPE_BOOLEAN,
+                          G_TYPE_INVALID);
+  dbus_g_proxy_connect_signal(mLogin1Proxy, "PrepareForSleep",
+                              G_CALLBACK(SessionSleepCallback), this, nullptr);
+
+  mTimedate1Proxy = dbus_g_proxy_new_for_name(
+      mDBusConnection, "org.freedesktop.timedate1",
+      "/org/freedesktop/timedate1", "org.freedesktop.DBus.Properties");
+
+  if (!mTimedate1Proxy) {
+    NS_WARNING("gds: error creating timedate dbus proxy\n");
+    return;
+  }
+
+  dbus_g_proxy_add_signal(
+      mTimedate1Proxy, "PropertiesChanged", G_TYPE_STRING,
+      dbus_g_type_get_map("GHashTable", G_TYPE_STRING, G_TYPE_VALUE),
+      G_TYPE_STRV, G_TYPE_INVALID);
+  dbus_g_proxy_connect_signal(mTimedate1Proxy, "PropertiesChanged",
+                              G_CALLBACK(TimedatePropertiesChangedCallback),
+                              this, nullptr);
+}
+
+void nsAppShell::StopDBusListening() {
+  // If mDBusConnection isn't initialized, that means we are not really
+  // listening.
+  if (!mDBusConnection) {
+    return;
+  }
+  dbus_connection_remove_filter(
+      dbus_g_connection_get_connection(mDBusConnection), ConnectionSignalFilter,
+      this);
+
+  if (mLogin1Proxy) {
+    dbus_g_proxy_disconnect_signal(mLogin1Proxy, "PrepareForSleep",
+                                   G_CALLBACK(SessionSleepCallback), this);
+    g_object_unref(mLogin1Proxy);
+    mLogin1Proxy = nullptr;
+  }
+
+  if (mTimedate1Proxy) {
+    dbus_g_proxy_disconnect_signal(
+        mTimedate1Proxy, "PropertiesChanged",
+        G_CALLBACK(TimedatePropertiesChangedCallback), this);
+    g_object_unref(mTimedate1Proxy);
+    mTimedate1Proxy = nullptr;
+  }
+
+  dbus_g_connection_unref(mDBusConnection);
+  mDBusConnection = nullptr;
+}
+
+#endif
+
+nsresult nsAppShell::Init() {
+  mozilla::hal::Init();
+
+#ifdef MOZ_ENABLE_DBUS
+  if (XRE_IsParentProcess()) {
+    nsCOMPtr<nsIPowerManagerService> powerManagerService =
+        do_GetService(POWERMANAGERSERVICE_CONTRACTID);
+
+    if (powerManagerService) {
+      powerManagerService->AddWakeLockListener(
+          WakeLockListener::GetSingleton());
+    } else {
+      NS_WARNING(
+          "Failed to retrieve PowerManagerService, wakelocks will be broken!");
+    }
+
+    StartDBusListening();
+  }
+#endif
+
+  if (!sPollFunc) {
+    sPollFunc = g_main_context_get_poll_func(nullptr);
+    g_main_context_set_poll_func(nullptr, &PollWrapper);
+  }
+
+  if (XRE_IsParentProcess()) {
+    ScreenManager& screenManager = ScreenManager::GetSingleton();
+    if (gfxPlatform::IsHeadless()) {
+      screenManager.SetHelper(mozilla::MakeUnique<HeadlessScreenHelper>());
+    } else {
+      screenManager.SetHelper(mozilla::MakeUnique<ScreenHelperGTK>());
+    }
+
+    if (gtk_check_version(3, 16, 3) == nullptr) {
+      // Before 3.16.3, GDK cannot override classname by --class command line
+      // option when program uses gdk_set_program_class().
+      //
+      // See https://bugzilla.gnome.org/show_bug.cgi?id=747634
+      //
+      // Only bother doing this for the parent process, since it's the one
+      // creating top-level windows.
+      if (gAppData) {
+        gdk_set_program_class(gAppData->remotingName);
+      }
+    }
+  }
+
+  if (!sPendingResumeQuark &&
+      gtk_check_version(3, 14, 7) != nullptr) {  // GTK 3.0 to GTK 3.14.7.
+    // GTK 3.8 - 3.14 registered this type when creating the frame clock
+    // for the root window of the display when the display was opened.
+    GType gdkFrameClockIdleType = g_type_from_name("GdkFrameClockIdle");
+    if (gdkFrameClockIdleType) {  // not in versions prior to 3.8
+      sPendingResumeQuark = g_quark_from_string("moz-resume-is-pending");
+      auto gdk_frame_clock_idle_class =
+          G_OBJECT_CLASS(g_type_class_peek_static(gdkFrameClockIdleType));
+      auto constructed = &gdk_frame_clock_idle_class->constructed;
+      sRealGdkFrameClockConstructed = *constructed;
+      *constructed = WrapGdkFrameClockConstructed;
+      auto dispose = &gdk_frame_clock_idle_class->dispose;
+      sRealGdkFrameClockDispose = *dispose;
+      *dispose = WrapGdkFrameClockDispose;
+    }
+  }
+
+  // Workaround for bug 1209659 which is fixed by Gtk3.20
+  if (gtk_check_version(3, 20, 0) != nullptr) {
+    unsetenv("GTK_CSD");
+  }
+
+  // Whitelist of only common, stable formats - see bugs 1197059 and 1203078
+  GSList* pixbufFormats = gdk_pixbuf_get_formats();
+  for (GSList* iter = pixbufFormats; iter; iter = iter->next) {
+    GdkPixbufFormat* format = static_cast<GdkPixbufFormat*>(iter->data);
+    gchar* name = gdk_pixbuf_format_get_name(format);
+    if (strcmp(name, "jpeg") && strcmp(name, "png") && strcmp(name, "gif") &&
+        strcmp(name, "bmp") && strcmp(name, "ico") && strcmp(name, "xpm") &&
+        strcmp(name, "svg") && strcmp(name, "webp") && strcmp(name, "avif")) {
+      gdk_pixbuf_format_set_disabled(format, TRUE);
+    }
+    g_free(name);
+  }
+  g_slist_free(pixbufFormats);
+
+  int err = pipe(mPipeFDs);
+  if (err) return NS_ERROR_OUT_OF_MEMORY;
+
+  GIOChannel* ioc;
+  GSource* source;
+
+  // make the pipe nonblocking
+
+  int flags = fcntl(mPipeFDs[0], F_GETFL, 0);
+  if (flags == -1) goto failed;
+  err = fcntl(mPipeFDs[0], F_SETFL, flags | O_NONBLOCK);
+  if (err == -1) goto failed;
+  flags = fcntl(mPipeFDs[1], F_GETFL, 0);
+  if (flags == -1) goto failed;
+  err = fcntl(mPipeFDs[1], F_SETFL, flags | O_NONBLOCK);
+  if (err == -1) goto failed;
+
+  ioc = g_io_channel_unix_new(mPipeFDs[0]);
+  source = g_io_create_watch(ioc, G_IO_IN);
+  g_io_channel_unref(ioc);
+  g_source_set_callback(source, (GSourceFunc)EventProcessorCallback, this,
+                        nullptr);
+  g_source_set_can_recurse(source, TRUE);
+  mTag = g_source_attach(source, nullptr);
+  g_source_unref(source);
+
+  return nsBaseAppShell::Init();
+failed:
+  close(mPipeFDs[0]);
+  close(mPipeFDs[1]);
+  mPipeFDs[0] = mPipeFDs[1] = 0;
+  return NS_ERROR_FAILURE;
+}
+
+void nsAppShell::ScheduleNativeEventCallback() {
+  unsigned char buf[] = {NOTIFY_TOKEN};
+  Unused << write(mPipeFDs[1], buf, 1);
+}
+
+bool nsAppShell::ProcessNextNativeEvent(bool mayWait) {
+  if (mSuspendNativeCount) {
+    return false;
+  }
+  bool didProcessEvent = g_main_context_iteration(nullptr, mayWait);
+  return didProcessEvent;
+}