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| 1 | +// Shape.js - Prototype |
| 2 | +class Shape { |
| 3 | + constructor(color) { |
| 4 | + this.color = color; |
| 5 | + } |
| 6 | + |
| 7 | + clone() { |
| 8 | + throw new Error("Method 'clone()' must be implemented."); |
| 9 | + } |
| 10 | +} |
| 11 | + |
| 12 | +// Circle.js - Concrete Prototype |
| 13 | +class Circle extends Shape { |
| 14 | + constructor(radius, color) { |
| 15 | + super(color); |
| 16 | + this.radius = radius; |
| 17 | + } |
| 18 | + |
| 19 | + clone() { |
| 20 | + return new Circle(this.radius, this.color); |
| 21 | + } |
| 22 | + |
| 23 | + getDetails() { |
| 24 | + return `Circle: Radius = ${this.radius}, Color = ${this.color}`; |
| 25 | + } |
| 26 | +} |
| 27 | + |
| 28 | +// Rectangle.js - Concrete Prototype |
| 29 | +class Rectangle extends Shape { |
| 30 | + constructor(width, height, color) { |
| 31 | + super(color); |
| 32 | + this.width = width; |
| 33 | + this.height = height; |
| 34 | + } |
| 35 | + |
| 36 | + clone() { |
| 37 | + return new Rectangle(this.width, this.height, this.color); |
| 38 | + } |
| 39 | + |
| 40 | + getDetails() { |
| 41 | + return `Rectangle: Width = ${this.width}, Height = ${this.height}, Color = ${this.color}`; |
| 42 | + } |
| 43 | +} |
| 44 | + |
| 45 | +// Triangle.js - Concrete Prototype |
| 46 | +class Triangle extends Shape { |
| 47 | + constructor(base, height, color) { |
| 48 | + super(color); |
| 49 | + this.base = base; |
| 50 | + this.height = height; |
| 51 | + } |
| 52 | + |
| 53 | + clone() { |
| 54 | + return new Triangle(this.base, this.height, this.color); |
| 55 | + } |
| 56 | + |
| 57 | + getDetails() { |
| 58 | + return `Triangle: Base = ${this.base}, Height = ${this.height}, Color = ${this.color}`; |
| 59 | + } |
| 60 | +} |
| 61 | + |
| 62 | +// ShapeManager.js - Client |
| 63 | +class ShapeManager { |
| 64 | + constructor() { |
| 65 | + this.shapes = {}; |
| 66 | + } |
| 67 | + |
| 68 | + addShape(key, shape) { |
| 69 | + this.shapes[key] = shape; |
| 70 | + } |
| 71 | + |
| 72 | + cloneShape(key) { |
| 73 | + const shapeToClone = this.shapes[key]; |
| 74 | + return shapeToClone ? shapeToClone.clone() : null; |
| 75 | + } |
| 76 | +} |
| 77 | + |
| 78 | +// Example usage |
| 79 | +const shapeManager = new ShapeManager(); |
| 80 | + |
| 81 | +const circle = new Circle(10, "red"); |
| 82 | +shapeManager.addShape("circle", circle); |
| 83 | + |
| 84 | +const clonedCircle = shapeManager.cloneShape("circle"); |
| 85 | +console.log(clonedCircle.getDetails()); // Circle: Radius = 10, Color = red |
| 86 | + |
| 87 | +const rectangle = new Rectangle(5, 10, "blue"); |
| 88 | +shapeManager.addShape("rectangle", rectangle); |
| 89 | + |
| 90 | +const clonedRectangle = shapeManager.cloneShape("rectangle"); |
| 91 | +console.log(clonedRectangle.getDetails()); // Rectangle: Width = 5, Height = 10, Color = blue |
| 92 | + |
| 93 | +const triangle = new Triangle(6, 8, "green"); |
| 94 | +shapeManager.addShape("triangle", triangle); |
| 95 | + |
| 96 | +const clonedTriangle = shapeManager.cloneShape("triangle"); |
| 97 | +console.log(clonedTriangle.getDetails()); // Triangle: Base = 6, Height = 8, Color = green |
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