[Fix #20234, Deleting Folder gratuitiously causes /local to open.]

2002-03-04  Ettore Perazzoli  <ettore@ximian.com>

	[Fix #20234, Deleting Folder gratuitiously causes /local to open.]

	* e-shell-view.c (find_inbox_in_storage): New helper function to
	heuristically find an Inbox folder.
	(handle_current_folder_removed): New function to handle the
	removal of the currently displayed folder in a slightly smarter
	way than before.  It tries to display the parent folder of the
	folder that got deleted and, if not possible, the Inbox in the
	same storage.  If neither of this is possible, it displays the
	default local Inbox.  [It still doesn't handle the case where you
	have no Inbox gracefully, but that can come later.]
	(storage_set_removed_folder_callback): Call
	`handle_current_folder_removed'.

2002-03-04  Ettore Perazzoli  <ettore@ximian.com>

	[Fix #20237, Shell silently drops xfer_folder errors.]

	* e-shell-folder-commands.c (xfer_result_callback): Display an
	error message if the operation failed.

svn path=/trunk/; revision=15898

1 files changed, 132 insertions, 3 deletions

diff --git a/shell/e-shell-view.c b/shell/e-shell-view.c
index 78059f5e17..29d815db97 100644
--- a/shell/e-shell-view.c
+++ b/shell/e-shell-view.c
@@ -33,8 +33,7 @@
 #include <ctype.h>
 
 #include <glib.h>
-#include <libgnome/gnome-defs.h>
-#include <libgnome/gnome-i18n.h>
+#include <libgnome/libgnome.h>
 #include <libgnomeui/gnome-window.h>
 #include <libgnomeui/gnome-window-icon.h>
 #include <libgnomeui/gnome-app.h>
@@ -44,6 +43,7 @@
 
 #include <gal/e-paned/e-hpaned.h>
 #include <gal/util/e-util.h>
+#include <gal/util/e-unicode-i18n.h>
 #include <gal/widgets/e-gui-utils.h>
 #include <gal/widgets/e-unicode.h>
 #include <gal/widgets/e-scroll-frame.h>
@@ -167,6 +167,10 @@ static guint signals[LAST_SIGNAL] = { 0 };
 
 #define SET_FOLDER_DELAY 250
 
+/* URI to display when the currently displayed folder is removed from the
+   storage.  */
+#define FALLBACK_URI "evolution:/local/Inbox"
+
 
 /* The icons for the offline/online status.  */
 
@@ -353,6 +357,126 @@ remove_uri_from_history (EShellView *shell_view,
 }
 
 
+/* This implements the behavior for when the folder which is currently displayed
+   gets deleted.  */
+
+/* Find the path for an Inbox in the specified storage.  This is not really
+   100% correct, but should work for most cases.  */
+static char *
+find_inbox_in_storage (EShellView *shell_view,
+		       const char *storage_name)
+{
+	EShellViewPrivate *priv;
+	EStorageSet *storage_set;
+	EStorage *storage;
+	GList *subfolder_paths;
+	GList *p;
+
+	priv = shell_view->priv;
+	storage_set = e_shell_get_storage_set (priv->shell);
+	storage = e_storage_set_get_storage (storage_set, storage_name);
+
+	subfolder_paths = e_storage_get_subfolder_paths (storage, "/");
+	for (p = subfolder_paths; p != NULL; p = p->next) {
+		const char *path;
+
+		path = (const char *) p->data;
+		if (g_utf8_strcasecmp (path, "/inbox") == 0
+		    || g_utf8_strcasecmp (path + 1, U_("Inbox")) == 0) {
+			char *return_path;
+
+			return_path = g_strconcat ("/", storage_name, "/", path,
+						   NULL);
+			e_free_string_list (subfolder_paths);
+			return return_path;
+		}
+	}
+
+	e_free_string_list (subfolder_paths);
+
+	return NULL;
+}
+
+static void
+handle_current_folder_removed (EShellView *shell_view)
+{
+	EShellViewPrivate *priv;
+	const char *current_path;
+	const char *p;
+	char *new_path;
+
+	/* Note: we assume that priv->uri is an evolution: URI.  */
+
+	priv = shell_view->priv;
+
+	current_path = priv->uri + E_SHELL_URI_PREFIX_LEN;
+
+	g_assert (*current_path == G_DIR_SEPARATOR);
+
+	new_path = NULL;
+
+	/* If we have a parent folder (not a parent storage), try to display
+	   that one.  */
+
+	p = strrchr (current_path + 1, G_DIR_SEPARATOR);
+	if (p != NULL && p[1] != '\0' && strchr (current_path + 1, G_DIR_SEPARATOR) != p) {
+		new_path = g_strndup (current_path, p - current_path);
+	} else {
+		/* We don't have a parent folder, so try to see if there is an
+		   Inbox folder in the same storage.  */
+
+		/* Extract the storage name.  */
+		p = strchr (current_path + 1, G_DIR_SEPARATOR);
+		if (p == NULL) {
+			/* The URL points itself to a storage, so just redirect
+			   to the default case.  */
+			new_path = NULL;
+		} else {
+			char *storage_name;
+
+			storage_name = g_strndup (current_path + 1, p - current_path - 1);
+
+			new_path = find_inbox_in_storage (shell_view, storage_name);
+			if (new_path == NULL) {
+				char *storage_uri;
+
+				/* No Inbox in this storage -- fallback to the storage.  */
+				storage_uri = g_strconcat (E_SHELL_URI_PREFIX, storage_name, NULL);
+				e_shell_view_display_uri (shell_view, storage_uri);
+
+				g_free (storage_uri);
+				g_free (storage_name);
+				return;
+			}
+
+			g_free (storage_name);
+		}
+	}
+
+	if (new_path == NULL) {
+		e_shell_view_display_uri (shell_view, FALLBACK_URI);
+	} else {
+		EFolder *folder;
+
+		/* Check that the folder we have chosen exists; if it doesn't,
+		   we just use the fallback URI.  */
+
+		folder = e_storage_set_get_folder (e_shell_get_storage_set (priv->shell), new_path);
+		if (folder == NULL) {
+			e_shell_view_display_uri (shell_view, FALLBACK_URI);
+		} else {
+			char *new_uri;
+
+			new_uri = g_strconcat (E_SHELL_URI_PREFIX, new_path, NULL);
+			e_shell_view_display_uri (shell_view, new_uri);
+			g_free (new_uri);
+		}
+
+		g_free (new_path);
+	}
+}
+
+
 /* Callbacks for the EStorageSet.  */
 
 static void
@@ -396,9 +520,10 @@ storage_set_removed_folder_callback (EStorageSet *storage_set,
 
 	page_num = gtk_notebook_page_num (GTK_NOTEBOOK (priv->notebook), view->control);
 
+	/* Check if it's the URI that we are currently displaying.  */
 	if (strncmp (priv->uri, E_SHELL_URI_PREFIX, E_SHELL_URI_PREFIX_LEN) == 0
 	    && strcmp (priv->uri + E_SHELL_URI_PREFIX_LEN, path) == 0) {
-		e_shell_view_display_uri (shell_view, "evolution:/local/Inbox");
+		handle_current_folder_removed (shell_view);
 	}
 
 	bonobo_control_frame_control_deactivate (BONOBO_CONTROL_FRAME (bonobo_widget_get_control_frame (BONOBO_WIDGET (view->control))));
@@ -1197,6 +1322,10 @@ destroy (GtkObject *object)
 	   storage set used for the delayed selection mechanism.  */
 	cleanup_delayed_selection (shell_view);
 
+	/* This is necessary to remove the signal handler for folder_new on the
+	   storage set used for the delayed selection mechanism.  */
+	cleanup_delayed_selection (shell_view);
+
 	gtk_object_unref (GTK_OBJECT (priv->tooltips));
 
 	if (priv->history != NULL)