codewear-study · HodaeSsi · Dec 27, 2019 · Mar 28, 2022
diff --git a/package.json b/package.json
@@ -0,0 +1,17 @@
+{
+  "name": "hodaessi_calculator",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+    "react": "^16.12.0",
+    "react-dom": "^16.12.0",
+    "react-scripts": "0.9.5"
+  },
+  "devDependencies": {},
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test --env=jsdom",
+    "eject": "react-scripts eject"
+  }
+}
diff --git a/public/favicon.ico b/public/favicon.ico
diff --git a/public/index.html b/public/index.html
@@ -0,0 +1,31 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
+    <!--
+      Notice the use of %PUBLIC_URL% in the tag above.
+      It will be replaced with the URL of the `public` folder during the build.
+      Only files inside the `public` folder can be referenced from the HTML.
+
+      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
+      work correctly both with client-side routing and a non-root public URL.
+      Learn how to configure a non-root public URL by running `npm run build`.
+    -->
+    <title>React App</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <!--
+      This HTML file is a template.
+      If you open it directly in the browser, you will see an empty page.
+
+      You can add webfonts, meta tags, or analytics to this file.
+      The build step will place the bundled scripts into the <body> tag.
+
+      To begin the development, run `npm start`.
+      To create a production bundle, use `npm run build`.
+    -->
+  </body>
+</html>
diff --git a/src/App.css b/src/App.css
@@ -0,0 +1,16 @@
+.App {
+  display: flex;
+  justify-content: center;
+  align-items: enter;
+  height: 100vh;
+  width: 100%;
+  margin-top: 50px;
+}
+.calculation {
+  width: 400px;
+  height: 600px;
+}
+.row {
+  display: flex;
+  widthL: 100%;
+}
diff --git a/src/App.js b/src/App.js
@@ -0,0 +1,137 @@
+//https://www.youtube.com/watch?v=nImdvUVMfl0
+import React, { Component } from 'react';
+import './App.css';
+import Button from './components/Button';
+import Input from './components/Input';
+import ClearButton from './components/ClearButton';
+
+class App extends Component {
+  constructor(props) {
+    super(props);
+
+    this.state = {
+      input: "",
+      previousNumber: "",
+      currentNumber: "",
+      operator: ""
+    };
+  }
+
+  addToInput = val => {
+    this.setState({input: this.state.input + val});
+  };
+
+  addZeroToInput = val => {
+    if (this.state.input !== "") {
+      this.setState({input: this.state.input + val});
+    }
+  }
+
+  addDecimalToInput = val => {
+    if (this.state.input.indexOf(".") === -1) {
+      this.setState({input: this.state.input + val});
+    }
+  }
+
+  clearInput = () => {
+     this.setState({ input: "" });
+  }
+
+  add = () => {
+    this.state.previousNumber = this.state.input;
+    this.setState({input: ""});
+    this.state.operator = "plus";
+  }
+  subtract = () => {
+    this.state.previousNumber = this.state.input;
+    this.setState({input: ""});
+    this.state.operator = "subtract";
+  }
+  multiply = () => {
+    this.state.previousNumber = this.state.input;
+    this.setState({input: ""});
+    this.state.operator = "multiply";
+  }  
+  divide = () => {
+    this.state.previousNumber = this.state.input;
+    this.setState({input: ""});
+    this.state.operator = "divide";
+  }
+
+  evaluation = () => {
+    this.state.currentNumber = this.state.input;
+
+    if(this.state.operator == "plus") {
+      this.setState({
+        input: 
+        parseFloat(this.state.previousNumber) + 
+        parseFloat(this.state.currentNumber)
+      })
+    } else if(this.state.operator == "subtract") {
+      this.setState({
+        input: 
+        parseFloat(this.state.previousNumber) -
+        parseFloat(this.state.currentNumber)
+      })
+    } else if(this.state.operator == "multiply") {
+      this.setState({
+        input: 
+        parseFloat(this.state.previousNumber) *
+        parseFloat(this.state.currentNumber)
+      })
+    } else if(this.state.operator == "divide") {
+      this.setState({
+        input: 
+        parseFloat(this.state.previousNumber) /
+        parseFloat(this.state.currentNumber)
+      })
+    }
+  }
+
+  render() {
+    return (
+      <div className="App">
+        <div className="calculation">
+          <div className="row">
+            <Input>{this.state.input}</Input>
+          </div>
+          <div className="row">
+            <Button handleClick={this.addToInput}>7</Button>
+            <Button handleClick={this.addToInput}>8</Button>
+            <Button handleClick={this.addToInput}>9</Button>
+
+            <Button handleClick={this.divide}>/</Button>
+          </div>
+          <div className="row">
+            <Button handleClick={this.addToInput}>4</Button>
+            <Button handleClick={this.addToInput}>5</Button>
+            <Button handleClick={this.addToInput}>6</Button>
+
+            <Button handleClick={this.multiply}>*</Button>
+          </div>
+          <div className="row">
+            <Button handleClick={this.addToInput}>1</Button>
+            <Button handleClick={this.addToInput}>2</Button>
+            <Button handleClick={this.addToInput}>3</Button>
+
+            <Button handleClick={this.add}>+</Button>
+          </div>
+          <div className="row">
+            <Button handleClick={this.addDecimalToInput}>.</Button>
+
+            <Button handleClick={this.addZeroToInput}>0</Button>
+
+            <Button handleClick={this.evaluation}>=</Button>
+
+            <Button handleClick={this.subtract}>-</Button>
+          </div>
+          <div className="row">
+            <ClearButton handleClear={this.clearInput}>Clear</ClearButton>
+          </div>
+        </div>
+      </div>
+    );
+  }
+}
+
+export default App;
diff --git a/src/App.test.js b/src/App.test.js
@@ -0,0 +1,8 @@
+import React from 'react';
+import ReactDOM from 'react-dom';
+import App from './App';
+
+it('renders without crashing', () => {
+  const div = document.createElement('div');
+  ReactDOM.render(<App />, div);
+});
diff --git a/src/components/Button.css b/src/components/Button.css
@@ -0,0 +1,16 @@
+.button {
+    display: flex;
+    height: 4em;
+    flex: 1;
+    justify-content: center;
+    align-items: center;
+    font-weight: lighter;
+    font-size: 1.4em;
+    background-color: #e0e1e6;
+    color: black;
+    outline: 1px solid gray;
+}
+.operator {
+    background-color: #fe9241;
+    color: white;
+}
diff --git a/src/components/Button.js b/src/components/Button.js
@@ -0,0 +1,23 @@
+import React, { Component } from 'react';
+import './Button.css';
+
+class Button extends Component {
+  isOperator = val => { 
+      return !isNaN(val) || val === "." || val === "=";
+  };
+
+  render() {
+    return (
+      <div 
+        className={`button ${this.isOperator(
+        this.props.children) ? "" : "operator"}`}
+        onClick={() => this.props.handleClick(
+            this.props.children)}
+      >
+        {this.props.children}
+      </div>
+    );
+  }
+}
+
+export default Button;
diff --git a/src/components/ClearButton.css b/src/components/ClearButton.css
@@ -0,0 +1,12 @@
+.clear-button{
+    display: flex;
+    flex: 1;
+    height: 4em;
+    align-items: center;
+    justify-content: center;
+    font-weight: lighter;
+    font-size: 1.rem;
+    outline: 1px solid #888;
+    height: 4em;
+    background-color: #c5c3cd;
+}
diff --git a/src/components/ClearButton.js b/src/components/ClearButton.js
@@ -0,0 +1,17 @@
+import React, { Component } from 'react';
+import './ClearButton.css';
+
+class ClearButton extends Component {
+  render() {
+    return (
+        <div 
+            className="clear-button"
+            onClick={() => this.props.handleClear()}    
+        >
+            {this.props.children}
+        </div>
+    );
+  }
+}
+
+export default ClearButton;
diff --git a/src/components/Input.css b/src/components/Input.css
@@ -0,0 +1,13 @@
+.input {
+    display: flex;
+    height: 4em;
+    flex: 1;
+    background-color: #000000;
+    outline: 1px solid #888888;
+    color: #fff;
+    justify-content: flex-end;
+    padding: 0.5em;
+    font-weight: bold;
+    font-size: 1.4em;
+    align-items: center;
+}
diff --git a/src/components/Input.js b/src/components/Input.js
@@ -0,0 +1,14 @@
+import React, { Component } from 'react';
+import './Input.css';
+
+class Input extends Component {
+  render() {
+    return (
+        <div className="input">
+            {this.props.children}
+        </div>
+    );
+  }
+}
+
+export default Input;
diff --git a/src/index.css b/src/index.css
@@ -0,0 +1,5 @@
+body {
+  margin: 0;
+  padding: 0;
+  font-family: sans-serif;
+}
diff --git a/src/index.js b/src/index.js
@@ -0,0 +1,9 @@
+import React from 'react';
+import ReactDOM from 'react-dom';
+import App from './App';
+import './index.css';
+
+ReactDOM.render(
+  <App />,
+  document.getElementById('root')
+);
diff --git a/src/logo.svg b/src/logo.svg