Calculator app assignment

assingment1/courses.dart

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+import 'dart:io';
+
+class OpenElective {
+  var courseCode;
+  var courseName;
+
+  OpenElective(code, name) {
+    this.courseCode = code;
+    this.courseName = name;
+  }
+
+  void printEl() {
+    print('$courseCode  $courseName');
+  }
+}
+
+class BranchElective {
+  var courseCode;
+  var courseName;
+  var branch;
+  var year;
+
+  BranchElective(code, name, branch, year) {
+    this.courseCode = code;
+    this.courseName = name;
+    this.branch = branch;
+    this.year = year;
+  }
+
+  void printEl() {
+    print('$courseCode  $courseName');
+  }
+
+  String branch_read() {
+    return branch;
+  }
+
+  String year_read() {
+    return year;
+  }
+}
+
+void add_els(List OpenEls, List BranchEls) {
+  print('##Add Electives##\n');
+  print('Enter the type 1. Open \t 2. Branch');
+  var choice = int.parse(stdin.readLineSync());
+
+  if (choice == 1) {
+    print('Enter Course Name and Code: ');
+    // var name = stdin.readLineSync();
+    // var code = stdin.readLineSync();
+    // OpenEls.add(new OpenElective(code, name));
+    var details = stdin.readLineSync().split(' ');
+    OpenEls.add(new OpenElective(details[0], details[1]));
+  } else {
+    print('Enter Course Name, Code, branch, year: ');
+    var details = stdin.readLineSync().split(' ');
+    BranchEls.add(
+        new BranchElective(details[0], details[1], details[2], details[3]));
+  }
+}
+
+void view_els(List OpenEls, List BranchEls, branch, year) {
+  print('View Electives');
+  print('##Open Electives##\n');
+
+  OpenEls.forEach((element) {
+    element.printEl();
+  });
+
+  print('\n##Branch Electives##\n');
+  BranchEls.forEach((element) {
+    if (element.branch_read() == branch && element.year_read() == year) {
+      element.printEl();
+    }
+  });
+
+  var c = stdin.readLineSync();
+}
+
+void main() {
+  var OpenEls = new List();
+  OpenEls.add(new OpenElective('ma101', 'maths1'));
+  OpenEls.add(new OpenElective('cs202', 'comp1'));
+  List BranchEls = new List();
+  BranchEls.add(new BranchElective('ec340', 'COA', 'ec', '2'));
+  BranchEls.add(new BranchElective('ec344', 'AIC', "ec", '2'));
+
+  var isAdmin;
+  while (true) {
+    print('\x1B[2J\x1B[0;0H');
+    print('Enter the user type 1. Admin 2. Student');
+    isAdmin = int.parse(stdin.readLineSync());
+
+    if (isAdmin == 1) {
+      add_els(OpenEls, BranchEls);
+    } else {
+      print('Enter branch and year');
+      var details = stdin.readLineSync().split(' ');
+      // print('$details');
+      view_els(OpenEls, BranchEls, details[0], details[1]);
+    }
+  }
+}

assingment1/login.dart

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+import 'dart:io';
+
+class Users {
+  var users = [
+    {'name': 'John', 'password': 'john@1'},
+    {'name': 'Rob', 'password': 'rob@1'},
+    {'name': 'Kate', 'password': 'Kate@1'},
+    {'name': 'admin', 'password': 'admin@1'},
+    {'name': 'Tohn', 'password': 'tohn@1'}
+  ];
+
+  void login() {
+    print('Login');
+
+    stdout.write('Username: ');
+    String name = stdin.readLineSync();
+
+    stdout.write('Password: ');
+    String password = stdin.readLineSync();
+
+    print("\x1B[2J\x1B[0;0H");
+    print('Signing In...');
+
+    sleep(new Duration(seconds: 2));
+    print("\x1B[2J\x1B[0;0H");
+
+    users.forEach((element) {
+      if (element['name'] == name && element['password'] == password) {
+        print('$name Login Sucessful!! ');
+        exit(0);
+      }
+      if (element['name'] == name && element['password'] != password) {
+        print('Wrong Password!!');
+        exit(0);
+      }
+    });
+
+    print('No such user exists!');
+  }
+}
+
+void main() {
+  var obj = new Users();
+
+  obj.login();
+}

assingment2/calculator/.gitignore

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+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+/build/
+
+# Web related
+lib/generated_plugin_registrant.dart
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json

assingment2/calculator/.metadata

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+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: 78910062997c3a836feee883712c241a5fd22983
+  channel: stable
+
+project_type: app

assingment2/calculator/README.md

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+# calculator
+
+A new Flutter project.
+
+## Getting Started
+
+This is a simple calculator with backspace, clear and basic functionality .
+It also has a history feature
+You cannot add more than one operator at a time.
+
+## Demo
+
+<p align='center'><img src="calculatorDemo.gif" width="250"></p>
+

assingment2/calculator/android/.gitignore

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+gradle-wrapper.jar
+/.gradle
+/captures/
+/gradlew
+/gradlew.bat
+/local.properties
+GeneratedPluginRegistrant.java
+
+# Remember to never publicly share your keystore.
+# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
+key.properties

assingment2/calculator/android/app/build.gradle

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+def localProperties = new Properties()
+def localPropertiesFile = rootProject.file('local.properties')
+if (localPropertiesFile.exists()) {
+    localPropertiesFile.withReader('UTF-8') { reader ->
+        localProperties.load(reader)
+    }
+}
+
+def flutterRoot = localProperties.getProperty('flutter.sdk')
+if (flutterRoot == null) {
+    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
+}
+
+def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
+if (flutterVersionCode == null) {
+    flutterVersionCode = '1'
+}
+
+def flutterVersionName = localProperties.getProperty('flutter.versionName')
+if (flutterVersionName == null) {
+    flutterVersionName = '1.0'
+}
+
+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
+
+android {
+    compileSdkVersion 29
+
+    sourceSets {
+        main.java.srcDirs += 'src/main/kotlin'
+    }
+
+    lintOptions {
+        disable 'InvalidPackage'
+    }
+
+    defaultConfig {
+        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
+        applicationId "com.example.calculator"
+        minSdkVersion 16
+        targetSdkVersion 29
+        versionCode flutterVersionCode.toInteger()
+        versionName flutterVersionName
+    }
+
+    buildTypes {
+        release {
+            // TODO: Add your own signing config for the release build.
+            // Signing with the debug keys for now, so `flutter run --release` works.
+            signingConfig signingConfigs.debug
+        }
+    }
+}
+
+flutter {
+    source '../..'
+}
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+}

assingment2/calculator/android/app/src/debug/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.calculator">
+    <!-- Flutter needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

assingment2/calculator/android/app/src/main/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.calculator">
+    <!-- io.flutter.app.FlutterApplication is an android.app.Application that
+         calls FlutterMain.startInitialization(this); in its onCreate method.
+         In most cases you can leave this as-is, but you if you want to provide
+         additional functionality it is fine to subclass or reimplement
+         FlutterApplication and put your custom class here. -->
+    <application
+        android:name="io.flutter.app.FlutterApplication"
+        android:label="calculator"
+        android:icon="@mipmap/ic_launcher">
+        <activity
+            android:name=".MainActivity"
+            android:launchMode="singleTop"
+            android:theme="@style/LaunchTheme"
+            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
+            android:hardwareAccelerated="true"
+            android:windowSoftInputMode="adjustResize">
+            <!-- Specifies an Android theme to apply to this Activity as soon as
+                 the Android process has started. This theme is visible to the user
+                 while the Flutter UI initializes. After that, this theme continues
+                 to determine the Window background behind the Flutter UI. -->
+            <meta-data
+              android:name="io.flutter.embedding.android.NormalTheme"
+              android:resource="@style/NormalTheme"
+              />
+            <!-- Displays an Android View that continues showing the launch screen
+                 Drawable until Flutter paints its first frame, then this splash
+                 screen fades out. A splash screen is useful to avoid any visual
+                 gap between the end of Android's launch screen and the painting of
+                 Flutter's first frame. -->
+            <meta-data
+              android:name="io.flutter.embedding.android.SplashScreenDrawable"
+              android:resource="@drawable/launch_background"
+              />
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+        <!-- Don't delete the meta-data below.
+             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
+        <meta-data
+            android:name="flutterEmbedding"
+            android:value="2" />
+    </application>
+</manifest>

assingment2/calculator/android/app/src/main/kotlin/com/example/calculator/MainActivity.kt

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+package com.example.calculator
+
+import io.flutter.embedding.android.FlutterActivity
+
+class MainActivity: FlutterActivity() {
+}

assingment2/calculator/android/app/src/main/res/drawable/launch_background.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@android:color/white" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

assingment2/calculator/android/app/src/main/res/values/styles.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Theme applied to the Android Window while the process is starting -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             Flutter draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+    <!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+    <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <item name="android:windowBackground">@android:color/white</item>
+    </style>
+</resources>

assingment2/calculator/android/app/src/profile/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.calculator">
+    <!-- Flutter needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>