Common helper function to unref a GObject from idle.

2005-06-10  Christian Persch  <chpe@cvs.gnome.org>

	* lib/Makefile.am:
	* lib/ephy-object-helpers.c:
	* lib/ephy-object-helpers.h:

	Common helper function to unref a GObject from idle.

	* embed/downloader-view.c: (downloader_view_finalize):
	* embed/mozilla/mozilla-embed-find.cpp:
	* embed/mozilla/mozilla-embed-persist.cpp:
	* embed/mozilla/mozilla-embed.cpp:
	* src/ephy-extensions-manager.c: (unload_extension):
	* src/ephy-main.c: (main):
	* src/ephy-shell.c: (toolwindow_hide_cb):
	* src/ephy-window.c: (ephy_window_finalize):

	Always unref the shell from idle, never directly. That's because
	in case we hold the last reference, we would end up terminating
	embedding/XPCOM from a mozilla callback. Fixes bug #151037,
	and moz#236688.

3 files changed, 20 insertions, 2 deletions

diff --git a/embed/mozilla/mozilla-embed-find.cpp b/embed/mozilla/mozilla-embed-find.cpp
index d589630b5..92e755e2b 100644
--- a/embed/mozilla/mozilla-embed-find.cpp
+++ b/embed/mozilla/mozilla-embed-find.cpp
@@ -28,6 +28,8 @@
 #include "mozilla-embed-find.h"
 #include "ephy-embed-find.h"
 #include "ephy-embed-shell.h"
+#include "ephy-object-helpers.h"
+#include "ephy-debug.h"
 
 #define MOZILLA_EMBED_FIND_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), MOZILLA_TYPE_EMBED_FIND, MozillaEmbedFindPrivate))
 
@@ -103,6 +105,7 @@ mozilla_embed_find_constructor (GType type, guint n_construct_properties,
 				GObjectConstructParam *construct_params)
 {
 	g_object_ref (embed_shell);
+
 	/* we depend on single because of mozilla initialization */
 	ephy_embed_shell_get_embed_single (embed_shell);
 
@@ -119,7 +122,7 @@ mozilla_embed_find_finalize (GObject *object)
 
 	parent_class->finalize (object);
 
-	g_object_unref (embed_shell);
+	ephy_object_idle_unref (embed_shell);
 }
 
 static void
diff --git a/embed/mozilla/mozilla-embed-persist.cpp b/embed/mozilla/mozilla-embed-persist.cpp
index c10d677ae..b84fdfe59 100644
--- a/embed/mozilla/mozilla-embed-persist.cpp
+++ b/embed/mozilla/mozilla-embed-persist.cpp
@@ -26,6 +26,7 @@
 #include "mozilla-embed.h"
 #include "ephy-embed-shell.h"
 #include "ephy-file-helpers.h"
+#include "ephy-object-helpers.h"
 #include "EphyBrowser.h"
 #include "EphyHeaderSniffer.h"
 #include "MozDownload.h"
@@ -102,6 +103,8 @@ mozilla_embed_persist_finalize (GObject *object)
 	persist->priv->mPersist = nsnull;
 
         G_OBJECT_CLASS (parent_class)->finalize (object);
+
+	ephy_object_idle_unref (embed_shell);
 }
 
 void
@@ -339,7 +342,9 @@ static GObject *
 mozilla_embed_persist_constructor (GType type, guint n_construct_properties,
 			           GObjectConstructParam *construct_params)
 {
-	/* we depend on single because of mozilla initialization */
+	g_object_ref (embed_shell);
+
+	/* this will ensure that mozilla is started up */
 	ephy_embed_shell_get_embed_single (embed_shell);
 
 	return parent_class->constructor (type, n_construct_properties,
diff --git a/embed/mozilla/mozilla-embed.cpp b/embed/mozilla/mozilla-embed.cpp
index 8a9d3aadc..1b7733e0d 100644
--- a/embed/mozilla/mozilla-embed.cpp
+++ b/embed/mozilla/mozilla-embed.cpp
@@ -29,6 +29,7 @@
 #include "ephy-embed-shell.h"
 #include "ephy-command-manager.h"
 #include "ephy-string.h"
+#include "ephy-object-helpers.h"
 #include "ephy-debug.h"
 
 #include "EphyBrowser.h"
@@ -201,6 +202,8 @@ static GObject *
 mozilla_embed_constructor (GType type, guint n_construct_properties,
 			   GObjectConstructParam *construct_params)
 {
+	g_object_ref (embed_shell);
+
 	/* we depend on single because of mozilla initialization */
 	ephy_embed_shell_get_embed_single (embed_shell);
 
@@ -289,6 +292,8 @@ mozilla_embed_finalize (GObject *object)
 	}
 
 	G_OBJECT_CLASS (parent_class)->finalize (object);
+
+	ephy_object_idle_unref (embed_shell);
 }
 
 static void
@@ -1127,6 +1132,8 @@ _mozilla_embed_new_xul_dialog (void)
 {
 	GtkWidget *window, *embed;
 
+	g_object_ref (embed_shell);
+
 	window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
 	embed = gtk_moz_embed_new ();
 	gtk_widget_show (embed);
@@ -1148,5 +1155,8 @@ _mozilla_embed_new_xul_dialog (void)
 				 G_CALLBACK (xul_title_cb),
 				 window, (GConnectFlags) 0);
 
+	g_object_weak_ref (G_OBJECT (window),
+			   (GWeakNotify) ephy_object_idle_unref, embed_shell);
+
 	return GTK_MOZ_EMBED (embed);
 }