mirror of https://github.com/rusefi/rusefi-1.git
95 lines
2.1 KiB
C++
95 lines
2.1 KiB
C++
/**
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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) 2012-2020
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*/
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#include "pch.h"
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#include "stddef.h"
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#include "lcd_menu_tree.h"
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MenuTree::MenuTree(MenuItem *root) {
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this->root = root;
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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::enterSubMenu(void) {
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if (current->firstChild != NULL) {
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current = topVisible = current->firstChild;
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} else if (current->callback != NULL) {
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VoidCallback cb = current->callback;
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cb();
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}
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}
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void MenuTree::back(void) {
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if (current->parent == root)
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return; // we are on the top level already
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current = topVisible = current->parent->topOfTheList;
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}
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void MenuTree::nextItem(void) {
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if (!current->next) {
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current = topVisible = current->topOfTheList;
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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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/**
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* This constructor created a menu item and associates a callback with it
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*/
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MenuItem::MenuItem(MenuItem * parent, const char *text, VoidCallback callback) {
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baseConstructor(parent, LL_STRING, text, callback);
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}
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/**
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* Looks like this constructor is used to create
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*/
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MenuItem::MenuItem(MenuItem * parent, const char *text) {
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baseConstructor(parent, LL_STRING, text, NULL);
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}
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/**
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* This constructor is used for lines with dynamic content
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*/
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MenuItem::MenuItem(MenuItem * parent, lcd_line_e lcdLine) {
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baseConstructor(parent, lcdLine, NULL, NULL);
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}
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void MenuItem::baseConstructor(MenuItem * parent, lcd_line_e lcdLine, const char *text, VoidCallback callback) {
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this->parent = parent;
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this->lcdLine = lcdLine;
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this->text = text;
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this->callback = callback;
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firstChild = nullptr;
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lastChild = nullptr;
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topOfTheList = nullptr;
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next = nullptr;
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index = 0;
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// root element has NULL parent
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if (parent != NULL) {
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if (!parent->firstChild) {
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topOfTheList = this;
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parent->firstChild = this;
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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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topOfTheList = parent->lastChild->topOfTheList;
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parent->lastChild->next = this;
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}
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parent->lastChild = this;
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}
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}
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