Re: [rfc][patch] Add optional PackageKit hook to install new applications

[Richard Hughes <hughsient gmail com>]

On Tue, 2008-12-09 at 12:36 +0000, Richard Hughes wrote:
> Something like the attached (v.5)?

Or actually one that works. V6 attached.

Richard.

Index: configure.in
===================================================================
--- configure.in	(revision 14806)
+++ configure.in	(working copy)
@@ -65,6 +65,7 @@
 	gtk+-2.0		>= gtk_minver
 	libxml-2.0		>= xml_minver
 	unique-1.0
+	dbus-glib-1
 ])
 dnl ==========================================================================
 
@@ -317,6 +318,17 @@
 
 dnl ==========================================================================
 
+AC_ARG_ENABLE(packagekit, 
+	AC_HELP_STRING([--disable-packagekit], 
+			[build without PackageKit support]))
+msg_packagekit=no
+if test "x$enable_packagekit" != "xno"; then
+	msg_packagekit=yes
+	AC_DEFINE(ENABLE_PACKAGEKIT, 1, [define to enable PackageKit mimetype installer])
+fi
+
+dnl ==========================================================================
+
 dnl Turn on the additional warnings last, so -Werror doesn't affect other tests.
 
 AC_ARG_ENABLE(more-warnings,
@@ -473,6 +485,7 @@
 	tracker support:	$msg_tracker
 	beagle support:		$msg_beagle
 	xmp support:		$msg_xmp
+	PackageKit support:     $msg_packagekit
 
 	profiling support:      ${profiling_support}
 	nautilus-extension documentation: ${enable_gtk_doc}
Index: libnautilus-private/nautilus-mime-actions.c
===================================================================
--- libnautilus-private/nautilus-mime-actions.c	(revision 14806)
+++ libnautilus-private/nautilus-mime-actions.c	(working copy)
@@ -31,6 +31,8 @@
 #include <glib/gi18n.h>
 #include <glib/gstdio.h>
 #include <string.h>
+#include <dbus/dbus-glib.h>
+#include <gdk/gdkx.h>
 
 #include "nautilus-file-attributes.h"
 #include "nautilus-file.h"
@@ -1022,7 +1024,217 @@
 	return response == GTK_RESPONSE_YES;
 }
 
+typedef struct {
+	NautilusWindowSlotInfo *slot_info;
+	GtkWindow *parent_window;
+	NautilusFile *file;
+	GList *files;
+	NautilusWindowOpenMode mode;
+	NautilusWindowOpenFlags flags;
+	char *activation_directory;
+	gboolean user_confirmation;
+} ActivateParametersInstall;
+
 static void
+activate_parameters_install_free (ActivateParametersInstall *parameters_install)
+{
+	if (parameters_install->slot_info) {
+		g_object_remove_weak_pointer (G_OBJECT (parameters_install->slot_info), (gpointer *)&parameters_install->slot_info);
+	}
+	if (parameters_install->parent_window) {
+		g_object_remove_weak_pointer (G_OBJECT (parameters_install->parent_window), (gpointer *)&parameters_install->parent_window);
+	}
+	nautilus_file_list_free (parameters_install->files);
+	g_free (parameters_install->activation_directory);
+	g_free (parameters_install);
+}
+
+static void
+search_for_application_dbus_call_notify_cb (DBusGProxy *proxy, DBusGProxyCall *call, ActivateParametersInstall *parameters_install)
+{
+	gboolean ret;
+	GError *error = NULL;
+
+	ret = dbus_g_proxy_end_call (proxy, call, &error, G_TYPE_INVALID);
+	if (!ret) {
+		g_debug ("Did not install handler: %s", error->message);
+		g_error_free (error);
+		goto out;
+	}
+
+	/* activate the file again */
+	nautilus_mime_activate_files (parameters_install->parent_window,
+				      parameters_install->slot_info,
+				      parameters_install->files,
+				      parameters_install->activation_directory,
+				      parameters_install->mode,
+				      parameters_install->flags,
+				      parameters_install->user_confirmation);
+out:
+	/* we're done with this data now */
+	activate_parameters_install_free (parameters_install);
+}
+
+static void
+search_for_application_mime_type (ActivateParametersInstall *parameters_install, const gchar *mime_type)
+{
+	DBusGConnection *connection;
+	DBusGProxy *proxy = NULL;
+	guint xid = 0;
+	GError *error = NULL;
+	DBusGProxyCall *call = NULL;
+	GtkWidget *dialog;
+	GdkWindow *window;
+
+	/* get bus */
+	connection = dbus_g_bus_get (DBUS_BUS_SESSION, &error);
+	if (connection == NULL) {
+		g_warning ("Could not connect to session bus: %s\n", error->message);
+		g_error_free (error);
+		goto out;
+	}
+
+	/* get proxy - native clients for for KDE and GNOME */
+	proxy = dbus_g_proxy_new_for_name (connection,
+					   "org.freedesktop.PackageKit",
+					   "/org/freedesktop/PackageKit",
+					   "org.freedesktop.PackageKit");
+	if (proxy == NULL) {
+		g_warning ("Could not connect to PackageKit session service\n");
+		goto out;
+	}
+
+	/* get XID from parent window */
+	window = gtk_widget_get_window (GTK_WIDGET (parameters_install->parent_window));
+	if (window != NULL) {
+		xid = GDK_WINDOW_XID (window);
+	}
+
+	/* don't timeout, as dbus-glib sets the timeout ~25 seconds */
+	dbus_g_proxy_set_default_timeout (proxy, INT_MAX);
+
+	/* invoke the method */
+	call = dbus_g_proxy_begin_call (proxy, "InstallMimeType",
+					(DBusGProxyCallNotify) search_for_application_dbus_call_notify_cb,
+					NULL, NULL,
+				        G_TYPE_UINT, xid,
+				        G_TYPE_UINT, 0,
+				        G_TYPE_STRING, mime_type,
+				        G_TYPE_INVALID);
+	if (call == NULL) {
+		dialog = gtk_message_dialog_new (NULL,
+						 GTK_DIALOG_MODAL,
+						 GTK_MESSAGE_ERROR,
+						 GTK_BUTTONS_OK,
+						 _("Could not use system package installer"));
+		g_signal_connect (G_OBJECT (dialog), "response",
+				  G_CALLBACK (gtk_widget_destroy), NULL);
+		gtk_window_set_resizable (GTK_WINDOW (dialog), FALSE);
+		gtk_widget_show (dialog);
+		goto out;
+	}
+
+	nautilus_debug_log (FALSE, NAUTILUS_DEBUG_LOG_DOMAIN_USER,
+			    "InstallMimeType method invoked for %s", mime_type);
+out:
+	if (call == NULL) {
+		/* dbus method was not called, so we're not going to get the async dbus callback */
+		activate_parameters_install_free (parameters_install);
+	}
+	if (proxy != NULL) {
+		g_object_unref (proxy);
+	}
+}
+
+static void
+application_unhandled_file_install (GtkDialog *dialog, gint response_id, ActivateParametersInstall *parameters_install)
+{
+	char *mime_type;
+	gtk_widget_destroy (GTK_WIDGET(dialog));
+
+	if (response_id == GTK_RESPONSE_YES) {
+		mime_type = nautilus_file_get_mime_type (parameters_install->file);
+		search_for_application_mime_type (parameters_install, mime_type);
+		g_free (mime_type);
+	} else {
+		/* free as we're not going to get the async dbus callback */
+		activate_parameters_install_free (parameters_install);
+	}
+}
+
+static void
+application_unhandled_file (ActivateParameters *parameters, NautilusFile *file)
+{
+	GFile *location;
+	char *full_uri_for_display;
+	char *uri_for_display;
+	char *error_message;
+	gboolean show_install_mime;
+	GtkWidget *dialog;
+	ActivateParametersInstall *parameters_install;
+
+	location = nautilus_file_get_location (file);
+	full_uri_for_display = g_file_get_parse_name (location);
+	g_object_unref (location);
+
+	/* Truncate the URI so it doesn't get insanely wide. Note that even
+	 * though the dialog uses wrapped text, if the URI doesn't contain
+	 * white space then the text-wrapping code is too stupid to wrap it.
+	 */
+	uri_for_display = eel_str_middle_truncate (full_uri_for_display, MAX_URI_IN_DIALOG_LENGTH);
+	g_free (full_uri_for_display);
+
+	error_message = g_strdup_printf (_("Could not display \"%s\"."), uri_for_display);
+	
+	g_free (uri_for_display);
+
+#ifdef ENABLE_PACKAGEKIT
+	/* allow an admin to disable the PackageKit search functionality */
+	show_install_mime = eel_preferences_get_boolean (NAUTILUS_PREFERENCES_INSTALL_MIME_ACTIVATION);
+#else
+	/* we have no install functionality */
+	show_install_mime = FALSE;
+#endif
+	if (!show_install_mime) {
+		/* show an unhelpful dialog */
+		eel_show_error_dialog (error_message,
+				       _("There is no application installed for this file type"),
+				       parameters->parent_window);
+		goto out;
+	}
+
+	/* use a custom dialog to prompt the user to install new software */
+	dialog = gtk_message_dialog_new (NULL, 0,
+					 GTK_MESSAGE_ERROR,
+					 GTK_BUTTONS_YES_NO,
+					 error_message);
+	gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog), "%s\n%s",
+			_("There is no application installed for this file type."),
+			_("Do you want to search for an application to open this file?"));
+	gtk_window_set_resizable (GTK_WINDOW (dialog), FALSE);
+
+	/* copy the parts of parameters we are interested in as the orignal will be unref'd */
+	parameters_install = g_new0 (ActivateParametersInstall, 1);
+	parameters_install->slot_info = parameters->slot_info;
+	g_object_add_weak_pointer (G_OBJECT (parameters_install->slot_info), (gpointer *)&parameters_install->slot_info);
+	if (parameters->parent_window) {
+		parameters_install->parent_window = parameters->parent_window;
+		g_object_add_weak_pointer (G_OBJECT (parameters_install->parent_window), (gpointer *)&parameters_install->parent_window);
+	}
+	parameters_install->activation_directory = g_strdup (parameters->activation_directory);
+	parameters_install->file = nautilus_file_ref (file);
+	parameters_install->files = nautilus_file_list_copy (parameters->files);
+	parameters_install->mode = parameters->mode;
+	parameters_install->flags = parameters->flags;
+	parameters_install->user_confirmation = parameters->user_confirmation;
+
+	g_signal_connect (dialog, "response", G_CALLBACK (application_unhandled_file_install), parameters_install);
+	gtk_widget_show_all (dialog);
+out:
+	g_free (error_message);
+}
+
+static void
 activate_files (ActivateParameters *parameters)
 {
 	NautilusWindowInfo *window_info;
@@ -1225,34 +1437,10 @@
 	}
 
 	for (l = unhandled_open_in_app_files; l != NULL; l = l->next) {
-		GFile *location;
-		char *full_uri_for_display;
-		char *uri_for_display;
-		char *error_message;
-		
 		file = NAUTILUS_FILE (l->data);
 
-		location = nautilus_file_get_location (file);
-		full_uri_for_display = g_file_get_parse_name (location);
-		g_object_unref (location);
-
-		/* Truncate the URI so it doesn't get insanely wide. Note that even
-		 * though the dialog uses wrapped text, if the URI doesn't contain
-		 * white space then the text-wrapping code is too stupid to wrap it.
-		 */
-		uri_for_display = eel_str_middle_truncate
-			(full_uri_for_display, MAX_URI_IN_DIALOG_LENGTH);
-		g_free (full_uri_for_display);
-	
-		error_message = g_strdup_printf (_("Could not display \"%s\"."),
-						 uri_for_display);
-		
-		g_free (uri_for_display);
-
-		eel_show_error_dialog (error_message,
-				       _("There is no application installed for this file type"),
-				       parameters->parent_window);
-		g_free (error_message);
+		/* this does not block */
+		application_unhandled_file (parameters, file);
 	}
 
 	window_info = NULL;
Index: libnautilus-private/apps_nautilus_preferences.schemas.in
===================================================================
--- libnautilus-private/apps_nautilus_preferences.schemas.in	(revision 14806)
+++ libnautilus-private/apps_nautilus_preferences.schemas.in	(working copy)
@@ -301,6 +301,21 @@
     </schema>
 
     <schema>
+      <key>/schemas/apps/nautilus/preferences/install_mime_activation</key>
+      <applyto>/apps/nautilus/preferences/install_mime_activation</applyto>
+      <owner>nautilus</owner>
+      <type>bool</type>
+      <default>true</default>
+      <locale name="C">
+         <short>If to show the package installer for unknown mime types</short>
+         <long>
+        Whether to present the user a dialog to search using the package
+        installer for an application that can open an unknown mime type.
+         </long>
+      </locale>
+    </schema>
+
+    <schema>
       <key>/schemas/apps/nautilus/preferences/theme</key>
       <applyto>/apps/nautilus/preferences/theme</applyto>
       <owner>nautilus</owner>
Index: libnautilus-private/nautilus-global-preferences.c
===================================================================
--- libnautilus-private/nautilus-global-preferences.c	(revision 14806)
+++ libnautilus-private/nautilus-global-preferences.c	(working copy)
@@ -280,6 +280,10 @@
 	  NULL, NULL,
 	  "executable_text_activation"
 	},
+	{ NAUTILUS_PREFERENCES_INSTALL_MIME_ACTIVATION,
+	  PREFERENCE_BOOLEAN,
+	  GINT_TO_POINTER (TRUE)
+	},
 	{ NAUTILUS_PREFERENCES_THEME,
 	  PREFERENCE_STRING,
 	  "default"
Index: libnautilus-private/nautilus-global-preferences.h
===================================================================
--- libnautilus-private/nautilus-global-preferences.h	(revision 14806)
+++ libnautilus-private/nautilus-global-preferences.h	(working copy)
@@ -93,6 +93,9 @@
 /* Activating executable text files */
 #define NAUTILUS_PREFERENCES_EXECUTABLE_TEXT_ACTIVATION		"preferences/executable_text_activation"
 
+/* Installing new packages when unknown mime type activated */
+#define NAUTILUS_PREFERENCES_INSTALL_MIME_ACTIVATION		"preferences/install_mime_activation"
+
 /* Spatial or browser mode */
 #define NAUTILUS_PREFERENCES_ALWAYS_USE_BROWSER       		"preferences/always_use_browser"
 #define NAUTILUS_PREFERENCES_ENABLE_TABS       			"preferences/tabs_enable"