Menu.cpp

00001 /* 
00002     Copyright (c) 2014 Romain Berrada
00003     
00004     Permission is hereby granted, free of charge, to any person obtaining a copy of this software 
00005     and associated documentation files (the "Software"), to deal in the Software without restriction, 
00006     including without limitation the rights to use, copy, modify, merge, publish, distribute, 
00007     sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is 
00008     furnished to do so, subject to the following conditions:
00009  
00010     The above copyright notice and this permission notice shall be included in all copies or 
00011     substantial portions of the Software.
00012  
00013     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING 
00014     BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 
00015     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
00016     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
00017     OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00018 */
00019 
00020 #include "mbed.h"
00021 #include "Menu.h"
00022 
00023 Menu::Program::Program(void* output_argument, int(*program)()) : _output_interface_argument(output_argument), _program(program), _next(NULL) {
00024 }
00025 
00026 Menu::Menu() : _first(NULL) {
00027 }
00028 
00029 void Menu::addProgram(void* output_argument, int(*program)()) {
00030     Program* prog = new Program(output_argument, program);
00031     if (_first==NULL) { // if first program added
00032         _first = prog;
00033         return;   
00034     } else {
00035         Program* temp = _first;
00036         while (temp->_next!=NULL) temp=temp->_next;
00037         temp->_next = prog;   
00038     }    
00039 }
00040 
00041 void Menu::clean() {
00042     Program* prg = _first;
00043     Program* next;
00044     while (prg!=NULL) {
00045         next = prg->_next;
00046         delete prg;
00047         prg = next;
00048     }
00049 }
00050 
00051 int Menu::launch() {   
00052     Program* choice = _first;
00053     bool done = false;
00054         
00055     if (choice==NULL) return -1; // if no program
00056     
00057     startMenu();
00058     displaySelectedProgram(choice->_output_interface_argument);
00059            
00060     while(!done) {
00061         if (isSelectionChanging()) {
00062             // change the current choice
00063             choice = choice->_next;
00064             if (choice==NULL) choice = _first;
00065             displaySelectedProgram(choice->_output_interface_argument);
00066         }
00067         
00068         if (isValidating()) {
00069             // validate the choice
00070             done = true;
00071         }
00072 
00073         wait(0.1);
00074     }
00075         
00076     displaySelectedProgram(NULL);
00077     return choice->_program(); // call the program function and return the result
00078 }