1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266
|
#include <iostream>
#include <iomanip>
using namespace std;
#include "menu2.h"
extern const string MY_ID_INFO =
"DJ_TLG";
extern const string MY_SUBMISSION_INFO =
"Lab";
#pragma warning(disable:4996)
bool tracingIsOn;
Student::Menu::Menu()
{
titlePtr = new char[11];
strcpy(titlePtr,"Empty Menu");
numberOfOptions = 0;
firstNodePtr = 0;
lastNodePtr = 0;
if (tracingIsOn)
{
cout << "\nStart of default constructor trace.";
cout << "\nGot storage for title: Empty Menu";
cout << "\nCopied title: " << titlePtr;
cout << "\nEnd of default constructor trace.";
cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
}
}
Student::Menu::Menu
(
const string& menuTitle
)
{
if (menuTitle.length() > MAX_TITLE_LENGTH)
{
cout<<"\n===== Error: Menu title cannot exceed 70 characters in length."
"\nThe title \n<<"<<menuTitle<<">>\n"
"was not added to the menu. \nThis menu will be given the following "
"default title: Empty Menu \nPress Enter to continue ...";
cin.ignore(80,'\n');
setTitle("Empty Menu");
if (tracingIsOn)
{
cout << "\nStart of one-parameter constructor trace.";
cout << "\nGot storage fortitle: Empty Menu";
cout << "\nCopied title: " << titlePtr;
cout << "\nEnd of one-parameter constructor trace.";
cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
}
}
else
{
titlePtr = new char[MAX_TITLE_LENGTH];
strcpy(titlePtr,menuTitle.c_str());
if (tracingIsOn)
{
cout << "\nStart of one-parameter constructor trace.";
cout << "\nGot storage for title: " << menuTitle;
cout << "\nCopied title: " << titlePtr;
cout << "\nEnd of one-parameter constructor trace.";
cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
}
}
numberOfOptions = 0;
firstNodePtr = 0;
lastNodePtr = 0;
}
Student::Menu::~Menu()
{
if (firstNodePtr == 0)
{
if (tracingIsOn && titlePtr != 0)
{
cout << "\nStart of destructor trace.";
cout << "\nDeleting storage for this title: "
<< titlePtr;
}
titlePtr = 0;
}
else
{
if (tracingIsOn && titlePtr != 0)
{
cout << "\nStart of destructor trace.";
cout << "\nDeleting storage for this title: "
<< titlePtr;
}
titlePtr = 0;
while(firstNodePtr != NULL)
{
lastNodePtr = firstNodePtr;
if (tracingIsOn)
cout << "\nDeleting storage for this option: "
<< lastNodePtr->optionTextPtr;
firstNodePtr->optionTextPtr = NULL;
if (tracingIsOn)
cout << "\nDeleting Node storage for that option.";
firstNodePtr = firstNodePtr->link;
delete lastNodePtr;
}
}
if (tracingIsOn)
{
cout << "\nEnd of destructor trace.";
cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
}
}
Student::Menu::Menu
(
const Menu &original
)
{
char* titleCopy = new char[MAX_TITLE_LENGTH];
strcpy(titleCopy,original.titlePtr);
Menu copy(titleCopy);
if (firstNodePtr != NULL)
{
lastNodePtr = firstNodePtr;
while(lastNodePtr != NULL)
{
copy.addOption(lastNodePtr->optionTextPtr);
lastNodePtr = lastNodePtr->link;
}
}
}
/*Menu& Student::Menu::operator=
(
const Menu &rhs
)
{
}*/
void Student::Menu::setTitle
(
const string& menuTitle
)
{
if (menuTitle.length() > MAX_TITLE_LENGTH)
{
cout<<"\n===== Error: Menu title cannot exceed 70 characters in length."
"\nThe title \n<<"<<menuTitle<<">>\n"
"was not added to the menu. \nPrevious title remains unchanged."
"\nPress Enter to continue ...";
cin.ignore(80,'\n');
}
else
{
if (tracingIsOn) cout << "\nStart of setTitle() trace.";
if (tracingIsOn && titlePtr != 0)
cout << "\nDeleting this title: " << titlePtr;
titlePtr = new char[MAX_TITLE_LENGTH];
strcpy(titlePtr,menuTitle.c_str());
if (tracingIsOn)
{
cout << "\nGot storage for title: " << menuTitle;
cout << "\nCopied title: " << titlePtr;
cout << "\nEnd of setTitle() trace.";
cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
}
}
}
void Student::Menu::addOption
(
const string& option
)
{
if (tracingIsOn)cout << "\nStart of addOption() trace.";
if(numberOfOptions >= MAX_NUM_OPTIONS)
{
cout<<"\n===== Error: Number of menu options cannot exceed 20.\n"
"Option <<"<<option<<">> not added.\n"
"Press Enter to continue ..."; cin.ignore(80,'\n');
}
else if (option.length() >= MAX_OPTION_LENGTH)
{
cout<<"\n===== Error: Menu option cannot exceed 70 characters in length."
"\nThe option\n<<"<<option<<">>\nwas not added to the menu.\n"
"Press Enter to continue ..."; cin.ignore(80,'\n');
}
else
{
char* cOption = new char[MAX_OPTION_LENGTH];
strcpy(cOption,option.c_str());
numberOfOptions++;
if (firstNodePtr == 0)
{
if (tracingIsOn) cout << "\nGetting storage for first OptionNode.";
firstNodePtr = new OptionNode;
lastNodePtr = firstNodePtr;
lastNodePtr->optionTextPtr = cOption;
if (tracingIsOn)
{
cout << "\nGot storage for option: " << option;
cout << "\nCopied option: " << lastNodePtr->optionTextPtr;
cout << "\nEnd of addOption() trace.";
cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
}
lastNodePtr->link=NULL;
}
else
{
if (tracingIsOn) cout << "\nGetting storage for next OptionNode.";
lastNodePtr->link = new OptionNode;
lastNodePtr = lastNodePtr->link;
lastNodePtr->optionTextPtr = cOption;
if (tracingIsOn)
{
cout << "\nGot storage for option: " << option;
cout << "\nCopied option: " << lastNodePtr->optionTextPtr;
cout << "\nEnd of addOption() trace.";
cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');
}
lastNodePtr->link=NULL;
}
}
}
void Student::Menu::display()const
{
cout << string(25,'\n');
if (numberOfOptions == 0)
{
cout<<titlePtr<<endl<<endl;
cout << "This menu currently has no options ...";
}
else
{
cout <<string(((80-strlen(titlePtr))/2),' ')<< titlePtr<<endl<<endl;
OptionNode* print = new OptionNode;
print = firstNodePtr;
OptionNode* indent = new OptionNode;
indent = firstNodePtr;
int lineLength = 0;
while(indent != NULL)
{
if((int)strlen(indent->optionTextPtr) > lineLength)
lineLength = strlen(indent->optionTextPtr);
indent = indent->link;
}
while(print != NULL)
{
for(int i = 1; i <= numberOfOptions; i++)
{
cout<<setw((80-lineLength)/2)<<i<<". "<<print->optionTextPtr<<endl;
print = print->link;
}
}
}
cout << string(((24-(numberOfOptions+2))/2), '\n');
}
/*int Student::Menu::getChoice
(
int maxNumTries = 3,
string userPrompt = "Enter the number of your menu choice here and press Enter: "
)const
{
}*/
|