107 lines
3.6 KiB
Diff
107 lines
3.6 KiB
Diff
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diff --git a/dom/plugins/base/nsPluginNativeWindowGtk.cpp b/dom/plugins/base/nsPluginNativeWindowGtk.cpp
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--- a/dom/plugins/base/nsPluginNativeWindowGtk.cpp
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+++ b/dom/plugins/base/nsPluginNativeWindowGtk.cpp
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@@ -19,16 +19,17 @@
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#if (GTK_MAJOR_VERSION == 3)
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#include <gtk/gtkx.h>
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#else
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#include "gtk2xtbin.h"
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#endif
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#include "mozilla/X11Util.h"
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+static void plug_added_cb(GtkWidget *widget, gpointer data);
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static gboolean plug_removed_cb (GtkWidget *widget, gpointer data);
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static void socket_unrealize_cb (GtkWidget *widget, gpointer data);
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nsPluginNativeWindowGtk::nsPluginNativeWindowGtk() : nsPluginNativeWindow()
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{
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// initialize the struct fields
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window = nullptr;
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x = 0;
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@@ -158,16 +159,19 @@ nsresult nsPluginNativeWindowGtk::Create
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//attach the socket to the container widget
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gtk_widget_set_parent_window(mSocketWidget, parent_win);
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// enable/disable focus event handlers,
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// see plugin_window_filter_func() for details
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g_object_set_data(G_OBJECT(mSocketWidget), "enable-xt-focus", (void *)aEnableXtFocus);
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+ g_signal_connect(mSocketWidget, "plug_added",
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+ G_CALLBACK(plug_added_cb), nullptr);
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+
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// Make sure to handle the plug_removed signal. If we don't the
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// socket will automatically be destroyed when the plug is
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// removed, which means we're destroying it more than once.
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// SYNTAX ERROR.
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g_signal_connect(mSocketWidget, "plug_removed",
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G_CALLBACK(plug_removed_cb), nullptr);
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g_signal_connect(mSocketWidget, "unrealize",
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@@ -273,16 +277,42 @@ nsresult nsPluginNativeWindowGtk::Create
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// Leave mWsInfo.type = 0 - Who knows what this is meant to be?
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XFlush(mWsInfo.display);
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return NS_OK;
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}
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#endif
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+static void
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+plug_window_finalize_cb(gpointer socket, GObject* plug_window)
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+{
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+ g_object_unref(socket);
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+}
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+
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+static void
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+plug_added_cb(GtkWidget *socket, gpointer data)
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+{
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+ // The plug window has been embedded, and gtk_socket_add_window() has added
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+ // a filter to the socket's plug_window, passing the socket as data for the
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+ // filter, so the socket must live as long as events may be received on the
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+ // plug window.
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+ //
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+ // https://git.gnome.org/browse/gtk+/tree/gtk/gtksocket.c?h=3.18.7#n1124
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+ g_object_ref(socket);
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+ // When the socket is unrealized, perhaps during gtk_widget_destroy() from
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+ // ~nsPluginNativeWindowGtk, the plug is removed. The plug in the child
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+ // process then destroys its widget and window. When the browser process
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+ // receives the DestroyNotify event for the plug window, GDK releases its
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+ // reference to plugWindow. This is typically the last reference and so the
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+ // weak ref callback triggers release of the socket.
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+ GdkWindow* plugWindow = gtk_socket_get_plug_window(GTK_SOCKET(socket));
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+ g_object_weak_ref(G_OBJECT(plugWindow), plug_window_finalize_cb, socket);
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+}
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+
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/* static */
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gboolean
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plug_removed_cb (GtkWidget *widget, gpointer data)
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{
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// Gee, thanks for the info!
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return TRUE;
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}
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diff --git a/widget/gtk/mozgtk/mozgtk.c b/widget/gtk/mozgtk/mozgtk.c
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--- a/widget/gtk/mozgtk/mozgtk.c
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+++ b/widget/gtk/mozgtk/mozgtk.c
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@@ -384,16 +384,17 @@ STUB(gtk_selection_data_targets_include_
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STUB(gtk_separator_get_type)
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STUB(gtk_separator_menu_item_new)
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STUB(gtk_separator_tool_item_new)
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STUB(gtk_settings_get_default)
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STUB(gtk_settings_get_for_screen)
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STUB(gtk_socket_add_id)
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STUB(gtk_socket_get_id)
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STUB(gtk_socket_get_type)
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+STUB(gtk_socket_get_plug_window)
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STUB(gtk_socket_new)
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STUB(gtk_spin_button_new)
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STUB(gtk_statusbar_new)
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STUB(gtk_style_lookup_icon_set)
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STUB(gtk_table_attach)
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STUB(gtk_table_get_type)
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STUB(gtk_table_new)
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STUB(gtk_target_list_add)
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