72 lines
1.6 KiB
Dart
72 lines
1.6 KiB
Dart
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/**
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Model-View-Controller（模型-视图-控制器） 模式
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Model（模型） - 模型代表一个存取数据的对象。它也可以带有逻辑，在数据变化时更新控制器。
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View（视图） - 视图代表模型包含的数据的可视化。
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Controller（控制器） - 控制器作用于模型和视图上。它控制数据流向模型对象，并在数据变化时更新视图。它使视图与模型分离开。
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*/
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main(List<String> args) {
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Student student = new Student();
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student.name = "Robert";
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student.rollNo = "10";
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//创建一个视图：把学生详细信息输出到控制台
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StudentView view = new StudentView();
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StudentController controller = new StudentController(student, view);
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controller.updateView();
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//更新模型数据
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controller.setStudentName("John");
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controller.updateView();
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}
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//////////////////////////////////////////////////////////////////
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///
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/// 创建模型
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///
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class Student {
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String rollNo;
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String name;
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}
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///
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/// 创建视图
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///
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class StudentView {
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void printStudentDetails(String studentName, String studentRollNo) {
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print("Student: \nName: $studentName\n Roll No: $studentRollNo");
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}
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}
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///
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/// 创建控制器
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///
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class StudentController {
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Student _model;
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StudentView _view;
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StudentController(this._model, this._view);
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void setStudentName(String name) {
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_model.name = name;
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}
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String getStudentName() {
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return _model.name;
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}
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void setStudentRollNo(String rollNo) {
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_model.rollNo = rollNo;
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}
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String getStudentRollNo() {
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return _model.rollNo;
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}
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updateView() {
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_view.printStudentDetails(_model.name, _model.rollNo);
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}
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}
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