Add file list helpers for getting associated applications.

2006-01-11  Christian Neumair  <chris@gnome-de.org>

	* libnautilus-private/nautilus-mime-actions.c:
	(nautilus_mime_get_default_application_for_files),
	(intersect_application_lists),
	(nautilus_mime_get_open_with_applications_for_files),
	(nautilus_mime_has_any_applications_for_files):
	* libnautilus-private/nautilus-mime-actions.h:
	Add file list helpers for getting associated applications.

	* libnautilus-private/nautilus-program-choosing.c:
	* libnautilus-private/nautilus-program-choosing.h:
	(nautilus_launch_application):
	Allow to pass multiple files per application launch.

	* src/nautilus-information-panel.c:
	(command_button_callback):
	Port to new API.

	* src/file-manager/fm-directory-view.c:
	(application_launch_parameters_new),
	(application_launch_parameters_free),
	(fm_directory_view_launch_application),
	(fm_directory_view_chose_application_callback),
	(application_selected_cb),
	(open_with_launch_application_callback),
	(add_application_to_open_with_menu), (reset_open_with_menu),
	(real_update_menus), (list_to_parameters_foreach),
	(mime_application_hash),
	(fm_directory_view_make_activation_parameters),
	(activate_callback):
	Support activation of multiple files at once, correctly figure out
	their associated applications. Fixes #105653.

	* src/file-manager/fm-directory-view.c:
	(activate_callback):
	ref/unref the view before/after operating on it. Fixes #326231.

4 files changed, 209 insertions, 28 deletions

diff --git a/libnautilus-private/nautilus-mime-actions.c b/libnautilus-private/nautilus-mime-actions.c
index 723c78e76..3915ec035 100644
--- a/libnautilus-private/nautilus-mime-actions.c
+++ b/libnautilus-private/nautilus-mime-actions.c
@@ -233,3 +233,154 @@ nautilus_mime_has_any_applications_for_file (NautilusFile *file)
 
 	return result;
 }
+
+GnomeVFSMimeApplication *
+nautilus_mime_get_default_application_for_files (GList *files)
+{
+	GList *l;
+	NautilusFile *file;
+	GnomeVFSMimeApplication *app, *one_app;
+
+	g_assert (files != NULL);
+
+	app = NULL;
+	for (l = files; l != NULL; l = l->next) {
+		file = l->data;
+
+		one_app = nautilus_mime_get_default_application_for_file (file);
+		if (one_app == NULL || (app != NULL && !gnome_vfs_mime_application_equal (app, one_app))) {
+			gnome_vfs_mime_application_free (app);
+			gnome_vfs_mime_application_free (one_app);
+			app = NULL;
+			break;
+		}
+
+		if (app == NULL) {
+			app = one_app;
+		} else {
+			gnome_vfs_mime_application_free (one_app);
+		}
+	}
+
+	return app;
+}
+
+/* returns an intersection of two mime application lists,
+ * and returns a new list, freeing a, b and all applications
+ * that are not in the intersection set.
+ * The lists are assumed to be pre-sorted by their IDs */
+static GList *
+intersect_application_lists (GList *a,
+			     GList *b)
+{
+	GList *l, *m;
+	GList *ret;
+	GnomeVFSMimeApplication *a_app, *b_app;
+	int cmp;
+
+	ret = NULL;
+
+	l = a;
+	m = b;
+
+	while (l != NULL && m != NULL) {
+		a_app = (GnomeVFSMimeApplication *) l->data;
+		b_app = (GnomeVFSMimeApplication *) m->data;
+
+		cmp = strcmp (a_app->id, b_app->id);
+		if (cmp > 0) {
+			gnome_vfs_mime_application_free (b_app);
+			m = m->next;
+		} else if (cmp < 0) {
+			gnome_vfs_mime_application_free (a_app);
+			l = l->next;
+		} else {
+			gnome_vfs_mime_application_free (b_app);
+			ret = g_list_prepend (ret, a_app);
+			l = l->next;
+			m = m->next;
+		}
+	}
+
+	g_list_foreach (l, (GFunc) gnome_vfs_mime_application_free, NULL);
+	g_list_foreach (m, (GFunc) gnome_vfs_mime_application_free, NULL);
+
+	g_list_free (a);
+	g_list_free (b);
+
+	return g_list_reverse (ret);
+}
+
+GList *
+nautilus_mime_get_open_with_applications_for_files (GList *files)
+{
+	GList *l;
+	NautilusFile *file;
+	GList *one_ret, *ret;
+
+	g_assert (files != NULL);
+
+	ret = NULL;
+	for (l = files; l != NULL; l = l->next) {
+		file = l->data;
+
+		one_ret = nautilus_mime_get_open_with_applications_for_file (file);
+		if (ret != NULL) {
+			ret = intersect_application_lists (ret, one_ret);
+		} else {
+			ret = one_ret;
+		}
+
+		if (ret == NULL) {
+			break;
+		}
+	}
+
+	return ret;
+}
+
+GList *
+nautilus_mime_get_applications_for_files (GList *files)
+{
+	GList *l;
+	NautilusFile *file;
+	GList *one_ret, *ret;
+
+	g_assert (files != NULL);
+
+	ret = NULL;
+	for (l = files; l != NULL; l = l->next) {
+		file = l->data;
+
+		one_ret = nautilus_mime_get_applications_for_file (file);
+		if (ret != NULL) {
+			ret = intersect_application_lists (ret, one_ret);
+		} else {
+			ret = one_ret;
+		}
+
+		if (ret == NULL) {
+			break;
+		}
+	}
+
+	return ret;
+}
+
+gboolean
+nautilus_mime_has_any_applications_for_files (GList *files)
+{
+	GList *l;
+	NautilusFile *file;
+
+	g_assert (files != NULL);
+
+	for (l = files; l != NULL; l = l->next) {
+		file = NAUTILUS_FILE (l->data);
+		if (!nautilus_mime_has_any_applications_for_file (file)) {
+			return FALSE;
+		}
+	}
+
+	return TRUE;
+}
diff --git a/libnautilus-private/nautilus-mime-actions.h b/libnautilus-private/nautilus-mime-actions.h
index f1035f387..d108bf7b7 100644
--- a/libnautilus-private/nautilus-mime-actions.h
+++ b/libnautilus-private/nautilus-mime-actions.h
@@ -36,6 +36,11 @@ GnomeVFSMimeApplication *nautilus_mime_get_default_application_for_file		(Nautil
 GList *                  nautilus_mime_get_open_with_applications_for_file	(NautilusFile *file);
 GList *			 nautilus_mime_get_applications_for_file		(NautilusFile *file);
 
+GnomeVFSMimeApplication *nautilus_mime_get_default_application_for_files	(GList        *files);
+GList *                  nautilus_mime_get_open_with_applications_for_files	(GList        *files);
+GList *			 nautilus_mime_get_applications_for_files		(GList        *file);
+
 gboolean                 nautilus_mime_has_any_applications_for_file		(NautilusFile *file);
+gboolean                 nautilus_mime_has_any_applications_for_files		(GList        *files);
 
 #endif /* NAUTILUS_MIME_ACTIONS_H */
diff --git a/libnautilus-private/nautilus-program-choosing.c b/libnautilus-private/nautilus-program-choosing.c
index 98782877b..fbe7e1c8b 100644
--- a/libnautilus-private/nautilus-program-choosing.c
+++ b/libnautilus-private/nautilus-program-choosing.c
@@ -664,18 +664,19 @@ void nautilus_launch_show_file (NautilusFile *file,
  * parameter. Provide a parent window for error dialogs. 
  * 
  * @application: The application to be launched.
- * @file: The file whose location should be passed as a parameter to the application
+ * @files: The files whose locations should be passed as a parameter to the application.
  * @parent_window: A window to use as the parent for any error dialogs.
  */
 void
 nautilus_launch_application (GnomeVFSMimeApplication *application, 
-			     NautilusFile *file,
+			     GList *files,
 			     GtkWindow *parent_window)
 {
 	GdkScreen       *screen;
 	char		*uri;
 	char            *uri_scheme;
-	GList            uris;
+	GList           *uris, *l;
+	NautilusFile    *file;
 	char           **envp;
 	GnomeVFSResult   result;
 #ifdef HAVE_STARTUP_NOTIFICATION
@@ -683,19 +684,26 @@ nautilus_launch_application (GnomeVFSMimeApplication *application,
 	SnDisplay *sn_display;
 #endif
 
-	uri = NULL;
-	if (nautilus_file_is_nautilus_link (file)) {
-		uri = nautilus_file_get_activation_uri (file);
-	}
-	
-	if (uri == NULL) {
-		uri = nautilus_file_get_uri (file);
+	g_assert (files != NULL);
+
+	uris = NULL;
+	for (l = files; l != NULL; l = l->next) {
+		file = NAUTILUS_FILE (l->data);
+
+		uri = NULL;
+
+		if (nautilus_file_is_nautilus_link (file)) {
+			uri = nautilus_file_get_activation_uri (file);
+		}
+		
+		if (uri == NULL) {
+			uri = nautilus_file_get_uri (file);
+		}
+
+		uris = g_list_prepend (uris, uri);
 	}
+	uris = g_list_reverse (uris);
 
-	uris.next = NULL;
-	uris.prev = NULL;
-	uris.data = uri;
-	
 	screen = gtk_window_get_screen (parent_window);
 	envp = my_gdk_spawn_make_environment_for_screen (screen, NULL);
 	
@@ -709,27 +717,44 @@ nautilus_launch_application (GnomeVFSMimeApplication *application,
 	if (gnome_vfs_mime_application_supports_startup_notification (application))
 	{ 
 		char *name;
+		char *description;
 		char *icon;
+		int   files_count;
+
+		file = NAUTILUS_FILE (files->data);
 
 		sn_context = sn_launcher_context_new (sn_display,
 						      screen ? gdk_screen_get_number (screen) :
 						      DefaultScreen (gdk_display));
-		
-		name = nautilus_file_get_display_name (file);
-		if (name != NULL) {
-			char *description;
-			
-			sn_launcher_context_set_name (sn_context, name);
-			
+
+		files_count = g_list_length (files);
+		if (files_count == 1) {
+			name = nautilus_file_get_display_name (file);
 			description = g_strdup_printf (_("Opening %s"), name);
-			
-			sn_launcher_context_set_description (sn_context, description);
+		} else {
+			name = NULL;
+			description = g_strdup_printf (ngettext ("Opening %d Item",
+								 "Opening %d Items",
+								 files_count),
+						       files_count);
+		}
 
+		if (name != NULL) {
+			sn_launcher_context_set_name (sn_context, name);
 			g_free (name);
+		}
+
+		if (description != NULL) {
+			sn_launcher_context_set_description (sn_context, description);
 			g_free (description);
 		}
 
 		icon = nautilus_icon_factory_get_icon_for_file (file, FALSE);
+
+		if (icon == NULL) {
+			icon = g_strdup (gnome_vfs_mime_application_get_icon (application));
+		}
+
 		if (icon != NULL) {
 			sn_launcher_context_set_icon_name (sn_context, icon);
 			g_free (icon);
@@ -761,7 +786,7 @@ nautilus_launch_application (GnomeVFSMimeApplication *application,
 	}
 #endif /* HAVE_STARTUP_NOTIFICATION */
 	
-	result = gnome_vfs_mime_application_launch_with_env (application, &uris, envp);
+	result = gnome_vfs_mime_application_launch_with_env (application, uris, envp);
 
 #ifdef HAVE_STARTUP_NOTIFICATION
 	if (sn_context != NULL) {
@@ -783,7 +808,7 @@ nautilus_launch_application (GnomeVFSMimeApplication *application,
 		break;
 
 	case GNOME_VFS_ERROR_NOT_SUPPORTED:
-		uri_scheme = nautilus_file_get_uri_scheme (file);
+		uri_scheme = nautilus_file_get_uri_scheme (NAUTILUS_FILE (files->data));
 		application_cannot_open_location (application,
 						  file,
 						  uri_scheme,
@@ -800,8 +825,8 @@ nautilus_launch_application (GnomeVFSMimeApplication *application,
 #endif
 		break;
 	}
-	
-	g_free (uri);
+
+	eel_g_list_free_deep (uris);
 	g_strfreev (envp);
 }
 
diff --git a/libnautilus-private/nautilus-program-choosing.h b/libnautilus-private/nautilus-program-choosing.h
index 48d5c3249..002073eb6 100644
--- a/libnautilus-private/nautilus-program-choosing.h
+++ b/libnautilus-private/nautilus-program-choosing.h
@@ -37,7 +37,7 @@ typedef void (*NautilusApplicationChoiceCallback) (GnomeVFSMimeApplication	 *app
 						   gpointer			  callback_data);
 
 void nautilus_launch_application                 (GnomeVFSMimeApplication           *application,
-						  NautilusFile                      *file,
+						  GList                             *files,
 						  GtkWindow                         *parent_window);
 void nautilus_launch_application_from_command    (GdkScreen                         *screen,
 						  const char                        *name,