#include "../../lv_examples.h"
#if LV_USE_GRIDNAV && LV_USE_FLEX && LV_BUILD_EXAMPLES

static const char * opts[] = {"0\n1\n2\n3\n4\n5", "0\n1\n2\n3\n4\n5\n6\n7\n8\n9", "s\nm\nh"};
static const int32_t opts_counts[] = {6, 10, 3};

static lv_obj_t * sliders[3];
static lv_obj_t * rollers[3];

static void slider_key_cb(lv_event_t * e)
{
    uint8_t i = (uint32_t)(uintptr_t)lv_event_get_user_data(e);
    lv_roller_set_selected(rollers[i], lv_slider_get_value(sliders[i]), LV_ANIM_ON);
}
static void roller_key_cb(lv_event_t * e)
{
    uint8_t i = (uint32_t)(uintptr_t)lv_event_get_user_data(e);
    lv_slider_set_value(sliders[i], lv_roller_get_selected(rollers[i]), LV_ANIM_ON);
}

/**
 * Grid navigation for only one axis
 */
void lv_example_gridnav_5(void)
{
    /*It's assumed that the default group is set and
     *there is a keyboard indev*/

    lv_group_t * group = lv_group_get_default();
    lv_obj_t * cont;

    cont = lv_obj_create(lv_screen_active());
    lv_obj_set_flex_flow(cont, LV_FLEX_FLOW_COLUMN);
    lv_obj_set_flex_align(cont, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER);
    lv_obj_set_size(cont, lv_pct(100), lv_pct(50));
    lv_obj_align(cont, LV_ALIGN_TOP_MID, 0, 0);
    /* only up/down keys will be used for grid navigation in this container. */
    /* left/right will be sent to the sliders */
    lv_gridnav_add(cont, LV_GRIDNAV_CTRL_VERTICAL_MOVE_ONLY);
    lv_group_add_obj(group, cont);
    for(uint32_t i = 0; i < 3; i++) {
        lv_obj_t * slider = lv_slider_create(cont);
        lv_slider_set_range(slider, 0, opts_counts[i] - 1);
        lv_group_remove_obj(slider);
        lv_obj_set_width(slider, lv_pct(85));
        sliders[i] = slider;
        lv_obj_add_event_cb(slider, slider_key_cb, LV_EVENT_KEY, (void *)(uintptr_t)i);
    }

    cont = lv_obj_create(lv_screen_active());
    lv_obj_set_flex_flow(cont, LV_FLEX_FLOW_ROW);
    lv_obj_set_flex_align(cont, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER);
    lv_obj_set_size(cont, lv_pct(100), lv_pct(50));
    lv_obj_align(cont, LV_ALIGN_BOTTOM_MID, 0, 0);
    /* only left/right keys will be used for grid navigation in this container. */
    /* up/down will be sent to the rollers */
    lv_gridnav_add(cont, LV_GRIDNAV_CTRL_HORIZONTAL_MOVE_ONLY);
    lv_group_add_obj(group, cont);
    for(uint32_t i = 0; i < 3; i++) {
        lv_obj_t * roller = lv_roller_create(cont);
        lv_roller_set_options(roller, opts[i], LV_ROLLER_MODE_INFINITE);
        lv_obj_set_size(roller, lv_pct(30), lv_pct(100));
        lv_group_remove_obj(roller);
        rollers[i] = roller;
        lv_obj_add_event_cb(roller, roller_key_cb, LV_EVENT_KEY, (void *)(uintptr_t)i);
    }
}

#endif