/* ******************************************************************** *
* private: go in a menu item and start function
* @param
* @return
* ******************************************************************** */
void LCDMenuLib::goEnter()
/* ******************************************************************** */
{
LCDMenu *tmp; // declare opjects
uint8_t name = function;
uint8_t j = 0;
if (function == _LCDML_NO_FUNC) { //check button lock
//check if element has childs
if ((tmp = curMenu->getChild(curloc + curloc_correction())) != NULL) { // check child
goMenu(*tmp);
name = tmp->name;
//check if element has childs
if ((tmp = tmp->getChild(0)) != NULL) {
while ((tmp = tmp->getSibling(1)) != NULL)
{
if (bitRead(group_en, tmp->disp) || bitRead(control, _LCDML_control_disable_hidden)) {
j++;
}
}
}
if (j == 0) {
function = name;
countChilds();
}
}
}
}
/* ******************************************************************** *
* public: display the current menu
* @param
* @return
* ******************************************************************** */
void LCDMenuLib::display()
/* ******************************************************************** */
{
//declaration
LCDMenu * tmp;
uint8_t i = scroll;
uint8_t maxi = (rows + scroll);
char buffer[_LCDML_DISP_cfg_max_string_length];
child_cnt = countChilds();
//check children
if ((tmp = curMenu->getChild(i))) {
if (!bitRead(control, _LCDML_control_search_display)) {
//clear lcd
display_clear();
//show menu structure
do
{
if (bitRead(group_en, tmp->disp)) {
strcpy_P(content[i-scroll], (char*)pgm_read_word(&(flash_table[tmp->name])));
content_id[i-scroll] = tmp->name;
i++;
}
} while ((tmp = tmp->getSibling(1)) != NULL && i<maxi);
bitSet(control, _LCDML_control_disp_update);
}
}
else { // no children
goBack();
// function can run ...
}
setCursor();
}
/* ******************************************************************** *
* private: curloc correction
* @param
* @return
* correction (uint8)
* ******************************************************************** */
uint8_t LCDMenuLib::curloc_correction()
{
LCDMenu *tmp; // declare opjects
uint8_t curloc_cor = 0;
uint8_t j = 0;
//correct function / menu element to open for hidden menu elements
if ((tmp = curMenu->getChild(0)) != NULL) {
do
{
if (bitRead(group_en, tmp->disp) || bitRead(control, _LCDML_control_disable_hidden)) {
j++;
}
else {
if (j <= curloc) {
curloc_cor++;
}
}
} while ((tmp = tmp->getSibling(1)) != NULL);
}
return curloc_cor;
}
/* ******************************************************************** *
* private: count sibling for an menu item if exists
* @param
* @return
* sibling count 0 = one
* ******************************************************************** */
uint8_t LCDMenuLib::countChilds()
/* ******************************************************************** */
{
//declaration
LCDMenu * tmp;
uint8_t j = 0;
//check if element has childs
if ((tmp = curMenu->getChild(0)) != NULL) {
do
{
if (bitRead(group_en, tmp->disp) || bitRead(control, _LCDML_control_disable_hidden)) {
j++;
}
} while ((tmp = tmp->getSibling(1)) != NULL);
}
if(j == 0) {
return 0;
} else {
return --j;
}
}
/* ******************************************************************** *
* private
* @param
* menu instance (pointer)
* menu element (pointer)
* @return
* search status (uint8)
* ******************************************************************** */
uint8_t LCDMenuLib::selectElementDirect(LCDMenu &p_m, uint8_t p_search)
/* ******************************************************************** */
{
//deklaration
LCDMenu * search = &p_m;
LCDMenu * tmp;
uint8_t found = 0;
bitSet(control, _LCDML_control_search_display);
do
{
tmp = search->getChild(0);
if (tmp) {//check elements for childs
goEnter();
if (tmp->name == p_search) { //search elements in this layer
found = 1;
break;
}
else {
function = _LCDML_NO_FUNC;
}
found = selectElementDirect(*tmp, p_search); //recursive search until found is true or last item reached
if (found == 1) { //check result
//something found
break;
}
else {
function = _LCDML_NO_FUNC;
//nothing found
//goto next root element
goBack();
Button_udlr(_LCDML_button_down);
}
}
else {
//no childs found
if (search->name == p_search) { //search
//found something
found = 1;
break;
}
else {
function = _LCDML_NO_FUNC;
//select next element
Button_udlr(_LCDML_button_down);
}
}
} while ((search=search->getSibling(1)) != NULL && found == 0);
if (found == 1) {
bitClear(control, _LCDML_control_search_display);
}
//return result
return found;
}