From 9b4c2438652f02d045c58ec2f41b0592a6d26219 Mon Sep 17 00:00:00 2001
From: Milan Crha <mcrha@redhat.com>
Date: Tue, 27 Oct 2009 21:18:01 +0100
Subject: Bug #550049 - Disable Mark messages as read actions when unusable

---
 modules/mail/e-mail-shell-view-actions.h |  4 +-
 modules/mail/e-mail-shell-view.c         | 68 ++++++++++++++++++++++++++++++++
 2 files changed, 70 insertions(+), 2 deletions(-)

(limited to 'modules/mail')

diff --git a/modules/mail/e-mail-shell-view-actions.h b/modules/mail/e-mail-shell-view-actions.h
index 99819f000e..6ae2e24a95 100644
--- a/modules/mail/e-mail-shell-view-actions.h
+++ b/modules/mail/e-mail-shell-view-actions.h
@@ -71,8 +71,8 @@
 	E_SHELL_WINDOW_ACTION ((window), "mail-folder-delete")
 #define E_SHELL_WINDOW_ACTION_MAIL_FOLDER_EXPUNGE(window) \
 	E_SHELL_WINDOW_ACTION ((window), "mail-folder-expunge")
-#define E_SHELL_WINDOW_ACTION_MAIL_FOLDER_MARK_ALL_READ(window) \
-	E_SHELL_WINDOW_ACTION ((window), "mail-folder-mark-all-read")
+#define E_SHELL_WINDOW_ACTION_MAIL_FOLDER_MARK_ALL_AS_READ(window) \
+	E_SHELL_WINDOW_ACTION ((window), "mail-folder-mark-all-as-read")
 #define E_SHELL_WINDOW_ACTION_MAIL_FOLDER_MOVE(window) \
 	E_SHELL_WINDOW_ACTION ((window), "mail-folder-move")
 #define E_SHELL_WINDOW_ACTION_MAIL_FOLDER_NEW(window) \
diff --git a/modules/mail/e-mail-shell-view.c b/modules/mail/e-mail-shell-view.c
index 3c82e516bc..d331c080ed 100644
--- a/modules/mail/e-mail-shell-view.c
+++ b/modules/mail/e-mail-shell-view.c
@@ -347,6 +347,54 @@ filter:
 	g_free (query);
 }
 
+static void
+has_unread_mail (GtkTreeModel *model, GtkTreeIter *parent, gboolean is_root, gboolean *has_unread)
+{
+	guint unread = 0;
+	GtkTreeIter iter, child;
+
+	g_return_if_fail (model != NULL);
+	g_return_if_fail (parent != NULL);
+	g_return_if_fail (has_unread != NULL);
+
+	if (is_root) {
+		gboolean is_store = FALSE, is_draft = FALSE;
+
+		gtk_tree_model_get (model, parent,
+			COL_UINT_UNREAD, &unread,
+			COL_BOOL_IS_STORE, &is_store,
+			COL_BOOL_IS_DRAFT, &is_draft,
+			-1);
+
+		if (is_draft || is_store) {
+			*has_unread = FALSE;
+			return;
+		}
+
+		*has_unread = *has_unread || (unread > 0 && unread != ~((guint)0));
+
+		if (*has_unread)
+			return;
+
+		if (!gtk_tree_model_iter_children (model, &iter, parent))
+			return;
+	} else {
+		iter = *parent;
+	}
+
+	do {
+		gtk_tree_model_get (model, &iter, COL_UINT_UNREAD, &unread, -1);
+
+		*has_unread = *has_unread || (unread > 0 && unread != ~((guint)0));
+		if (*has_unread)
+			break;
+
+		if (gtk_tree_model_iter_children (model, &child, &iter))
+			has_unread_mail (model, &child, FALSE, has_unread);
+
+	} while (gtk_tree_model_iter_next (model, &iter) && !*has_unread);
+}
+
 static void
 mail_shell_view_update_actions (EShellView *shell_view)
 {
@@ -371,6 +419,7 @@ mail_shell_view_update_actions (EShellView *shell_view)
 	gboolean folder_is_outbox;
 	gboolean folder_is_store;
 	gboolean folder_is_trash;
+	gboolean folder_has_unread_rec = FALSE;
 
 	mail_shell_view = E_MAIL_SHELL_VIEW (shell_view);
 
@@ -400,6 +449,8 @@ mail_shell_view_update_actions (EShellView *shell_view)
 
 	uri = em_folder_tree_get_selected_uri (folder_tree);
 	if (uri != NULL) {
+		EMFolderTreeModel *model;
+
 		account = mail_config_get_account_by_source_url (uri);
 
 		/* FIXME This belongs in a GroupWise plugin. */
@@ -407,6 +458,19 @@ mail_shell_view_update_actions (EShellView *shell_view)
 			(g_strrstr (uri, "groupwise://") != NULL) &&
 			account != NULL && account->parent_uid != NULL;
 
+		model = em_folder_tree_model_get_default ();
+		if (model) {
+			GtkTreeRowReference *reference = em_folder_tree_model_lookup_uri (model, uri);
+			if (reference != NULL) {
+				GtkTreePath *path = gtk_tree_row_reference_get_path (reference);
+				GtkTreeIter iter;
+
+				gtk_tree_model_get_iter (GTK_TREE_MODEL (model), &iter, path);
+				has_unread_mail (GTK_TREE_MODEL (model), &iter, TRUE, &folder_has_unread_rec);
+				gtk_tree_path_free (path);
+			}
+		}
+
 		g_free (uri);
 	}
 
@@ -459,6 +523,10 @@ mail_shell_view_update_actions (EShellView *shell_view)
 	sensitive = !folder_is_store && folder_can_be_deleted;
 	gtk_action_set_sensitive (action, sensitive);
 
+	action = ACTION (MAIL_FOLDER_MARK_ALL_AS_READ);
+	sensitive = folder_has_unread_rec && !folder_is_store;
+	gtk_action_set_sensitive (action, sensitive);
+
 	e_mail_shell_view_update_popup_labels (mail_shell_view);
 }
 
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