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Added lv_dropdown_clear_options, convert options when adding

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xennex22 2020-03-11 13:14:47 -07:00 committed by GitHub
parent e19ce6b451
commit f6b8a2f1b6
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1 changed files with 29 additions and 3 deletions
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32
src/lv_widgets/lv_dropdown.c
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@ -177,6 +177,26 @@ void lv_dropdown_set_text(lv_obj_t * ddlist, const char * txt)
lv_obj_invalidate(ddlist); lv_obj_invalidate(ddlist);
} }
/**
* Clear any options in a drop down list. Static or dynamic.
* @param ddlist pointer to drop down list object
*/
void lv_dropdown_clear_options(lv_obj_t * ddlist)
{
LV_ASSERT_OBJ(ddlist, LV_OBJX_NAME);
lv_dropdown_ext_t * ext = lv_obj_get_ext_attr(ddlist);
if(ext->options == NULL) return;
if(ext->static_txt == 0)
lv_mem_free(ext->options);
ext->options = NULL;
ext->static_txt = 0;
ext->option_cnt = 0;
lv_obj_invalidate(ddlist);
}
/** /**
* Set the options in a drop down list from a string * Set the options in a drop down list from a string
* @param ddlist pointer to drop down list object * @param ddlist pointer to drop down list object
@ -262,11 +282,17 @@ void lv_dropdown_add_option(lv_obj_t * ddlist, const char * option, uint16_t pos
lv_dropdown_ext_t * ext = lv_obj_get_ext_attr(ddlist); lv_dropdown_ext_t * ext = lv_obj_get_ext_attr(ddlist);
/*Clear any existing static options*/ /*Convert static options to dynmaic*/
if(ext->static_txt != 0) { if(ext->static_txt != 0) {
ext->options = NULL; char * static_options = ext->options;
size_t len = strlen(static_options) + 1;
ext->options = lv_mem_alloc(len);
LV_ASSERT_MEM(ext->options);
if(ext->options == NULL) return;
strcpy(ext->options, static_options);
ext->static_txt = 0; ext->static_txt = 0;
ext->option_cnt = 0;
} }
/*Allocate space for the new option*/ /*Allocate space for the new option*/