mirror of https://github.com/FOME-Tech/fome-fw.git
63 lines
1.3 KiB
C++
63 lines
1.3 KiB
C++
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/**
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* @file lcd_menu_tree.cpp
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*
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* @date Jan 6, 2015
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* @author Andrey Belomutskiy, (c) 2012-2014
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*/
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#include "stddef.h"
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#include "lcd_menu_tree.h"
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#include "error_handling.h"
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static MenuItem ROOT(NULL, NULL);
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static MenuTree tree(&ROOT);
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static MenuItem miSensors(tree.root, "sensors");
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static MenuItem miTrigger(tree.root, "trigger");
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static MenuItem miBench(tree.root, "bench test");
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static MenuItem miAbout(tree.root, "about");
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MenuTree::MenuTree(MenuItem *root) {
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this->root = root;
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current = NULL;
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}
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void MenuTree::init(MenuItem *first, int linesCount) {
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this->linesCount = linesCount;
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current = first;
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topVisible = first;
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}
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void MenuTree::nextItem(void) {
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if (current->next == NULL) {
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// todo: go to first element
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return;
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}
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current = current->next;
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if (current->index - topVisible->index == linesCount)
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topVisible = topVisible->next;
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}
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MenuItem::MenuItem(MenuItem * parent, const char *text) {
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this->parent = parent;
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this->text = text;
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lcdLine = LL_STRING;
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// root element has NULL parent
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if (parent != NULL) {
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if (parent->firstChild == NULL) {
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parent->firstChild = this;
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index = 0;
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}
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if (parent->lastChild != NULL) {
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index = parent->lastChild->index + 1;
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parent->lastChild->next = this;
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}
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parent->lastChild = this;
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} else {
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firstChild = NULL;
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lastChild = NULL;
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}
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}
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