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Adding null safety #13

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141 changes: 65 additions & 76 deletions lib/models/note.dart
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Original file line number Diff line number Diff line change
@@ -1,78 +1,67 @@

class Note {

int _id;
String _title;
String _description;
String _date;
int _priority;

Note(this._title, this._date, this._priority, [this._description]);

Note.withId(this._id, this._title, this._date, this._priority, [this._description]);

int get id => _id;

String get title => _title;

String get description => _description;

int get priority => _priority;

String get date => _date;

set title(String newTitle) {
if (newTitle.length <= 255) {
this._title = newTitle;
}
}

set description(String newDescription) {
if (newDescription.length <= 255) {
this._description = newDescription;
}
}

set priority(int newPriority) {
if (newPriority >= 1 && newPriority <= 2) {
this._priority = newPriority;
}
}

set date(String newDate) {
this._date = newDate;
}

// Convert a Note object into a Map object
Map<String, dynamic> toMap() {

var map = Map<String, dynamic>();
if (id != null) {
map['id'] = _id;
}
map['title'] = _title;
map['description'] = _description;
map['priority'] = _priority;
map['date'] = _date;

return map;
}

// Extract a Note object from a Map object
Note.fromMapObject(Map<String, dynamic> map) {
this._id = map['id'];
this._title = map['title'];
this._description = map['description'];
this._priority = map['priority'];
this._date = map['date'];
}
int? _id;
String? _title;
String? _description;
String? _date;
int? _priority;

// default constructor
Note(this._title, this._date, this._priority, [this._description]);

// Named constructor with ID
Note.withId(this._id, this._title, this._date, this._priority,
[this._description]);

// getters
int? get id => _id;
String? get title => _title;
String? get description => _description;
String? get date => _date;
int? get priority => _priority;

// setters
set title(String? newTitle) {
if (newTitle!.length <= 255) {
this._title = newTitle;
}
}

set description(String? newDescription) {
if (newDescription!.length <= 255) {
this._description = newDescription;
}
}

set priority(int? newPriority) {
if (newPriority! >= 1 && newPriority <= 2) {
this._priority = newPriority;
}
}

set date(String? newDate) {
this._date = newDate;
}

// Convert a Note object into a map object
Map<String, dynamic> toMap() {
var map = Map<String, dynamic>();
if (id != null) {
map['id'] = _id;
}
map['title'] = _title;
map['description'] = _description;
map['priority'] = _priority;
map['date'] = _date;

return map;
}

// Extract a note object from a map object
Note.fromMapObject(Map<String, dynamic> map) {
this._id = map["id"];
this._title = map["title"];
this._description = map["description"];
this._priority = map["priority"];
this._date = map["date"];
}
}