[gnome-software] offline updates: Scrolled content of the error message dialog

[Richard Hughes <rhughes src gnome org>]

commit fbde882656399a4b3b66a7b61b9b112ef822158a
Author: Rafal Luzynski <digitalfreak lingonborough com>
Date:   Tue Apr 7 19:52:28 2015 +0200

    offline updates: Scrolled content of the error message dialog
    
    The detailed error message text for the offline updates may
    contain many lines and must be scrollable. With this fix we
    insert GtkScrolledWindow containing the message into the dialog.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=747148
    
    Signed-off-by: Richard Hughes <richard hughsie com>

 src/gs-offline-updates.c |   28 +++++++++++++++++++++++++---
 1 files changed, 25 insertions(+), 3 deletions(-)
---
diff --git a/src/gs-offline-updates.c b/src/gs-offline-updates.c
index 7803d37..c2c20a5 100644
--- a/src/gs-offline-updates.c
+++ b/src/gs-offline-updates.c
@@ -28,12 +28,21 @@
 #include "gs-offline-updates.h"
 #include "gs-utils.h"
 
+static void
+gs_offline_updates_label_allocate_cb (GtkWidget *label,
+                                     GdkRectangle *allocation, gpointer data)
+{
+       GtkScrolledWindow *sw = GTK_SCROLLED_WINDOW (data);
+       gtk_scrolled_window_set_min_content_height (
+                       sw, MIN (allocation->height, 300));
+}
+
 void
 gs_offline_updates_show_error (void)
 {
        const gchar *title;
        gboolean show_geeky = FALSE;
-       GtkWidget *dialog;
+       GtkWidget *dialog, *message_area, *sw, *label;
        _cleanup_error_free_ GError *error = NULL;
        _cleanup_object_unref_ PkError *pk_error = NULL;
        _cleanup_object_unref_ PkResults *results = NULL;
@@ -131,8 +140,21 @@ gs_offline_updates_show_error (void)
                                         GTK_MESSAGE_INFO,
                                         GTK_BUTTONS_CLOSE,
                                         "%s", title);
-       gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
-                                                 "%s", msg->str);
+
+       message_area = gtk_message_dialog_get_message_area (GTK_MESSAGE_DIALOG (dialog));
+       g_assert (GTK_IS_BOX (message_area));
+       sw = gtk_scrolled_window_new (NULL, NULL);
+       gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
+                                       GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
+       gtk_widget_set_visible (sw, TRUE);
+
+       label = gtk_label_new (msg->str);
+       gtk_widget_set_visible (label, TRUE);
+       g_signal_connect (label, "size-allocate",
+                       G_CALLBACK (gs_offline_updates_label_allocate_cb), sw);
+       gtk_container_add (GTK_CONTAINER (sw), label);
+       gtk_container_add (GTK_CONTAINER (message_area), sw);
+
        g_signal_connect_swapped (dialog, "response",
                                  G_CALLBACK (gtk_widget_destroy),
                                  dialog);