From 14bf640bf6a6d115578b3447ae6965b14d3835ea Mon Sep 17 00:00:00 2001
From: twinaphex <libretro@gmail.com>
Date: Thu, 22 Oct 2015 04:12:32 +0200
Subject: [PATCH] Create list_push callback - allows us to override lists

---
 menu/drivers/glui.c     |  1 +
 menu/drivers/null.c     |  1 +
 menu/drivers/rgui.c     |  1 +
 menu/drivers/rmenu.c    |  1 +
 menu/drivers/xmb.c      |  6 ++++++
 menu/drivers/zarch.c    |  1 +
 menu/menu_displaylist.c |  3 +++
 menu/menu_driver.c      | 10 ++++++++++
 menu/menu_driver.h      |  3 +++
 9 files changed, 27 insertions(+)

diff --git a/menu/drivers/glui.c b/menu/drivers/glui.c
index cd89d53e41..1e87a0713e 100644
--- a/menu/drivers/glui.c
+++ b/menu/drivers/glui.c
@@ -865,6 +865,7 @@ menu_ctx_driver_t menu_ctx_glui = {
    NULL,
    NULL,
    NULL,
+   NULL,
    glui_list_set_selection,
    NULL,
    glui_load_image,
diff --git a/menu/drivers/null.c b/menu/drivers/null.c
index c43cf2093d..d8e464d01b 100644
--- a/menu/drivers/null.c
+++ b/menu/drivers/null.c
@@ -47,6 +47,7 @@ menu_ctx_driver_t menu_ctx_null = {
   NULL,  /* list_delete */
   NULL,  /* list_clear */
   NULL,  /* list_cache */
+  NULL,  /* list_push */
   NULL,  /* list_get_selection */
   NULL,  /* list_get_size */
   NULL,  /* list_get_entry */
diff --git a/menu/drivers/rgui.c b/menu/drivers/rgui.c
index 36194cec14..2a1d85e7e6 100644
--- a/menu/drivers/rgui.c
+++ b/menu/drivers/rgui.c
@@ -867,6 +867,7 @@ menu_ctx_driver_t menu_ctx_rgui = {
    NULL,
    NULL,
    NULL,
+   NULL,
    "rgui",
    MENU_VIDEO_DRIVER_GENERIC,
    rgui_environ,
diff --git a/menu/drivers/rmenu.c b/menu/drivers/rmenu.c
index e8b145f7a9..47e7506512 100644
--- a/menu/drivers/rmenu.c
+++ b/menu/drivers/rmenu.c
@@ -355,6 +355,7 @@ menu_ctx_driver_t menu_ctx_rmenu = {
    NULL,
    NULL,
    NULL,
+   NULL,
    "rmenu",
    MENU_VIDEO_DRIVER_DIRECT3D,
    rmenu_environ,
diff --git a/menu/drivers/xmb.c b/menu/drivers/xmb.c
index 25dabffbf5..bce269e4f0 100644
--- a/menu/drivers/xmb.c
+++ b/menu/drivers/xmb.c
@@ -2590,6 +2590,11 @@ static int xmb_list_bind_init(menu_file_list_cbs_t *cbs,
    return -1;
 }
 
+static int xmb_list_push(menu_displaylist_info_t *info, unsigned type)
+{
+   return -1;
+}
+
 static bool xmb_menu_init_list(void *data)
 {
    int ret;
@@ -2638,6 +2643,7 @@ menu_ctx_driver_t menu_ctx_xmb = {
    xmb_list_free,
    xmb_list_clear,
    xmb_list_cache,
+   xmb_list_push,
    xmb_list_get_selection,
    xmb_list_get_size,
    xmb_list_get_entry,
diff --git a/menu/drivers/zarch.c b/menu/drivers/zarch.c
index 59c4f52a5c..4c44ef6f1b 100644
--- a/menu/drivers/zarch.c
+++ b/menu/drivers/zarch.c
@@ -1244,6 +1244,7 @@ menu_ctx_driver_t menu_ctx_zarch = {
    NULL,
    NULL,
    NULL,
+   NULL,
    zarch_load_image,
    "zarch",
    MENU_VIDEO_DRIVER_OPENGL,
diff --git a/menu/menu_displaylist.c b/menu/menu_displaylist.c
index 7317a5916d..7204c4deef 100644
--- a/menu/menu_displaylist.c
+++ b/menu/menu_displaylist.c
@@ -2188,6 +2188,9 @@ int menu_displaylist_push_list(menu_displaylist_info_t *info, unsigned type)
    struct video_shader *shader = video_shader_driver_get_current_shader();
 #endif
 
+   if (menu_driver_list_push(info, type))
+      return 0;
+
    switch (type)
    {
       case DISPLAYLIST_HELP_SCREEN_LIST:
diff --git a/menu/menu_driver.c b/menu/menu_driver.c
index 9d20e1dca1..90131234f7 100644
--- a/menu/menu_driver.c
+++ b/menu/menu_driver.c
@@ -245,6 +245,16 @@ size_t  menu_driver_list_get_selection(void)
    return 0;
 }
 
+bool menu_driver_list_push(menu_displaylist_info_t *info, unsigned type)
+{
+   const menu_ctx_driver_t *driver = menu_ctx_driver_get_ptr();
+
+   if (driver->list_push)
+      if (driver->list_push(info, type) == 0)
+         return true;
+   return false;
+}
+
 void menu_driver_list_cache(menu_list_type_t type, unsigned action)
 {
    const menu_ctx_driver_t *driver = menu_ctx_driver_get_ptr();
diff --git a/menu/menu_driver.h b/menu/menu_driver.h
index 5a028633fc..44499f15de 100644
--- a/menu/menu_driver.h
+++ b/menu/menu_driver.h
@@ -129,6 +129,7 @@ typedef struct menu_ctx_driver
    void  (*list_free)(file_list_t *list, size_t, size_t);
    void  (*list_clear)(file_list_t *list);
    void  (*list_cache)(menu_list_type_t, unsigned);
+   int   (*list_push)(menu_displaylist_info_t*, unsigned);
    size_t(*list_get_selection)(void *data);
    size_t(*list_get_size)(void *data, menu_list_type_t type);
    void *(*list_get_entry)(void *data, menu_list_type_t type, unsigned i);
@@ -214,6 +215,8 @@ void  menu_driver_context_destroy(void);
 
 bool menu_driver_alive(void);
 
+bool menu_driver_list_push(menu_displaylist_info_t *info, unsigned type);
+
 size_t  menu_driver_list_get_selection(void);
 
 bool menu_environment_cb(menu_environ_cb_t type, void *data);