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texthistory: add debugging helpers to print undo stack

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This is helpful to have when tracking down issues like #5506.
This commit is contained in:
Christian Hergert 2023-01-10 13:36:16 -08:00
parent 6a134551b9
commit ad0348b85e
1 changed files with 128 additions and 0 deletions
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128
gtk/gtktexthistory.c
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@ -127,6 +127,126 @@ G_DEFINE_TYPE (GtkTextHistory, gtk_text_history, G_TYPE_OBJECT)
return; \
} G_STMT_END
static const char *
action_kind_name (ActionKind kind)
{
switch (kind)
{
case ACTION_KIND_BARRIER: return "Barrier";
case ACTION_KIND_DELETE_BACKSPACE: return "Delete_Backspace";
case ACTION_KIND_DELETE_KEY: return "Delete_Key";
case ACTION_KIND_DELETE_PROGRAMMATIC: return "Delete_Programmatic";
case ACTION_KIND_DELETE_SELECTION: return "Delete_Selection";
case ACTION_KIND_GROUP: return "Group";
case ACTION_KIND_INSERT: return "Insert";
default: return "unknown";
}
}
static inline void
gtk_text_history_printf_space (GString *str,
guint depth)
{
for (guint i = 0; i < depth; i++)
g_string_append (str, " ");
}
static void
gtk_text_history_printf_action (Action *action,
GString *str,
guint depth)
{
g_autofree char *escaped = NULL;
gtk_text_history_printf_space (str, depth);
g_string_append_printf (str, "%s {\n", action_kind_name (action->kind));
gtk_text_history_printf_space (str, depth+1);
g_string_append_printf (str, "is_modified: %s\n", action->is_modified ? "true" : "false");
gtk_text_history_printf_space (str, depth+1);
g_string_append_printf (str, "is_modified_set: %s\n", action->is_modified_set ? "true" : "false");
switch (action->kind)
{
case ACTION_KIND_BARRIER:
gtk_text_history_printf_space (str, depth+1);
g_string_append_printf (str, "depth: %u\n", action->u.group.depth);
break;
case ACTION_KIND_DELETE_BACKSPACE:
case ACTION_KIND_DELETE_KEY:
case ACTION_KIND_DELETE_PROGRAMMATIC:
case ACTION_KIND_DELETE_SELECTION:
gtk_text_history_printf_space (str, depth+1);
g_string_append_printf (str, "begin: %u\n", action->u.delete.begin);
gtk_text_history_printf_space (str, depth+1);
g_string_append_printf (str, "end: %u\n", action->u.delete.end);
gtk_text_history_printf_space (str, depth+1);
g_string_append (str, "selection {\n");
gtk_text_history_printf_space (str, depth+2);
g_string_append_printf (str, "insert: %d\n", action->u.delete.selection.insert);
gtk_text_history_printf_space (str, depth+2);
g_string_append_printf (str, "bound: %d\n", action->u.delete.selection.bound);
gtk_text_history_printf_space (str, depth+1);
g_string_append (str, "}\n");
gtk_text_history_printf_space (str, depth+1);
escaped = g_strescape (istring_str (&action->u.delete.istr), NULL);
g_string_append_printf (str, "text: \"%s\"\n", escaped);
break;
case ACTION_KIND_INSERT:
gtk_text_history_printf_space (str, depth+1);
g_string_append_printf (str, "begin: %u\n", action->u.insert.begin);
gtk_text_history_printf_space (str, depth+1);
g_string_append_printf (str, "end: %u\n", action->u.insert.end);
gtk_text_history_printf_space (str, depth+1);
escaped = g_strescape (istring_str (&action->u.insert.istr), NULL);
g_string_append_printf (str, "text: \"%s\"\n", escaped);
break;
case ACTION_KIND_GROUP:
gtk_text_history_printf_space (str, depth+1);
g_string_append_printf (str, "depth: %u\n", action->u.group.depth);
for (const GList *iter = action->u.group.actions.head; iter; iter = iter->next)
{
Action *child = iter->data;
gtk_text_history_printf_space (str, depth+1);
g_string_append (str, "children {\n");
gtk_text_history_printf_action (child, str, depth+2);
gtk_text_history_printf_space (str, depth+1);
g_string_append (str, "}\n");
}
break;
default:
break;
}
gtk_text_history_printf_space (str, depth);
g_string_append (str, "}\n");
}
G_GNUC_UNUSED static char *
gtk_text_history_printf (GtkTextHistory *history)
{
GString *str = g_string_new (NULL);
g_string_append (str, "undo {\n");
for (const GList *iter = history->undo_queue.head; iter; iter = iter->next)
gtk_text_history_printf_action (iter->data, str, 1);
g_string_append (str, "}\n");
g_string_append (str, "redo {\n");
for (const GList *iter = history->redo_queue.head; iter; iter = iter->next)
gtk_text_history_printf_action (iter->data, str, 1);
g_string_append (str, "}\n");
return g_string_free (str, FALSE);
}
static inline void
uint_order (guint *a,
guint *b)
@ -719,6 +839,14 @@ gtk_text_history_undo (GtkTextHistory *self)
return_if_applying (self);
return_if_irreversible (self);
#if 0
{
char *str = gtk_text_history_printf (self);
g_print ("%s\n", str);
g_free (str);
}
#endif
if (gtk_text_history_get_can_undo (self))
{
Action *action;