[libdazzle] listbox: allow tweaking the recycle max

[Christian Hergert <chergert src gnome org>]

commit a39a229bd4ca478e99f718bcdead80334e6e1791
Author: Christian Hergert <chergert redhat com>
Date:   Sun Dec 17 03:17:39 2017 -0800

    listbox: allow tweaking the recycle max
    
    This allows you to set how many rows to cache by default.

 src/widgets/dzl-list-box.c |   28 +++++++++++++++++++++++++++-
 src/widgets/dzl-list-box.h |    3 +++
 2 files changed, 30 insertions(+), 1 deletions(-)
---
diff --git a/src/widgets/dzl-list-box.c b/src/widgets/dzl-list-box.c
index 425a284..af0a546 100644
--- a/src/widgets/dzl-list-box.c
+++ b/src/widgets/dzl-list-box.c
@@ -35,6 +35,8 @@
 #include "dzl-list-box.h"
 #include "dzl-list-box-row.h"
 
+#define RECYCLE_MAX_DEFAULT 25
+
 typedef struct
 {
   GListModel *model;
@@ -294,7 +296,7 @@ dzl_list_box_init (DzlListBox *self)
   DzlListBoxPrivate *priv = dzl_list_box_get_instance_private (self);
 
   priv->row_type = G_TYPE_INVALID;
-  priv->recycle_max = 25;
+  priv->recycle_max = RECYCLE_MAX_DEFAULT;
 
   g_queue_init (&priv->trashed_rows);
 }
@@ -369,3 +371,27 @@ dzl_list_box_set_model (DzlListBox *self,
                            self,
                            NULL);
 }
+
+/**
+ * dzl_list_box_set_recycle_max:
+ * @self: a #DzlListBox
+ * @recycle_max: max number of rows to cache
+ *
+ * Sets the max number of rows to cache for reuse.  Set to 0 to return
+ * to the default.
+ *
+ * Since: 3.28
+ */
+void
+dzl_list_box_set_recycle_max (DzlListBox *self,
+                              guint       recycle_max)
+{
+  DzlListBoxPrivate *priv = dzl_list_box_get_instance_private (self);
+
+  g_return_if_fail (DZL_IS_LIST_BOX (self));
+
+  if (recycle_max == 0)
+    priv->recycle_max = RECYCLE_MAX_DEFAULT;
+  else
+    priv->recycle_max = recycle_max;
+}
diff --git a/src/widgets/dzl-list-box.h b/src/widgets/dzl-list-box.h
index 34de62b..5a0fd2d 100644
--- a/src/widgets/dzl-list-box.h
+++ b/src/widgets/dzl-list-box.h
@@ -51,6 +51,9 @@ GListModel  *dzl_list_box_get_model         (DzlListBox  *self);
 DZL_AVAILABLE_IN_ALL
 void         dzl_list_box_set_model         (DzlListBox  *self,
                                              GListModel  *model);
+DZL_AVAILABLE_IN_3_28
+void         dzl_list_box_set_recycle_max   (DzlListBox  *self,
+                                             guint        recycle_max);
 
 G_END_DECLS