Feat/add dropdown list via js (#1)

* [feat/add-dropdown-list] Refactoring dropdown list.

* Refactoring class Dropdown

* [feat/add-dropdown-list] Added bandler(parcler)

* Added mouseenter event handling

* Fix bug open dropdown and added main.scss

* Added private fild and changed methods

* Refactoring DropDown

* Added placeholder

* Added customStyle

* Fixed initSelected

* Refactored initSelected

* Added feature in customize select

* featch customStyle complited!

* Delited file customStyle.scss

Co-authored-by: MaxOvs <rock_maksimus@mail.ru>

.gitignore

@@ -0,0 +1,3 @@
+node_modules
+dist
+.parcel-cache

package.json

@@ -0,0 +1,24 @@
+{
+  "name": "dropdown-list",
+  "version": "0.0.1",
+  "description": "",
+  "scripts": {
+    "start": "parcel ./src/index.html -p 4500 --open",
+    "build": "parcel build ./src/index.html"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/MaxOvs19/Dropdown-list.git"
+  },
+  "author": "",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/MaxOvs19/Dropdown-list/issues"
+  },
+  "homepage": "https://github.com/MaxOvs19/Dropdown-list#readme",
+  "devDependencies": {
+    "@parcel/transformer-sass": "^2.7.0",
+    "parcel": "^2.7.0",
+    "prettier": "^2.7.1"
+  }
+}

src/cg-dropdown.js

@@ -0,0 +1,205 @@
+export class DropDown {
+  #element;
+  #list;
+  #options;
+  #caret;
+
+  //ToDo: Added  url
+
+  constructor(options = {}) {
+    this.#init(options);
+    this.#initSelected();
+    this.#initAmount();
+    this.#initItems();
+    this.#initEvent();
+  }
+
+  #open() {
+    this.#list.classList.toggle('open');
+    this.#caret.classList.toggle('caret_rotate');
+  }
+
+  #init(options) {
+    this.#options = options;
+    const elem = document.querySelector(options.selector);
+
+    if (!elem) {
+      throw new Error(`Element with selector ${options.selector}`);
+    }
+
+    this.#element = elem;
+  }
+
+  #initSelected() {
+    const { styles } = this.#options;
+    if (this.#options.selected) {
+      this.#createSelected(this.#options.selected);
+    } else {
+      this.#createSelected('Select...');
+    }
+
+    if (!this.#options.selected && this.#options.placeholder) {
+      this.#createSelected(this.#options.placeholder);
+    }
+
+    if ((styles && this.#options.placeholder) || (styles && this.#options.selected)) {
+      this.#createSelected(this.#options.placeholder);
+      this.#customStyles(styles);
+    } else {
+      this.#createSelected('Select...');
+      this.#customStyles(styles);
+    }
+
+    this.#element.addEventListener('click', () => {
+      this.#open();
+    });
+  }
+
+  #initAmount() {
+    const { amount } = this.#options;
+
+    if (!amount) {
+      return;
+    }
+
+    let templete = '';
+
+    for (let i = 0; i < amount; i++) {
+      templete += `<li class="list__item">${i + 1}</li>`;
+    }
+    this.#element.innerHTML += `<ul class="list">${templete}</ul>`;
+  }
+
+  #initItems() {
+    const { items, styles } = this.#options;
+
+    if (!Array.isArray(items)) {
+      return;
+    }
+
+    const templete = items.map((item) => `<li class="list__item" >${item}</li>`).join('');
+    this.#element.innerHTML += `<ul class="list">${templete}</ul>`;
+
+    if (styles) {
+      const templete = items.map((item) => `<li class="list__item" >${item}</li>`).join('');
+      this.#element.innerHTML += `<ul class="list style = "${styles}">${templete}</ul>`;
+      this.#customStyles(styles);
+    }
+
+    const options = this.#element.querySelectorAll('.list__item');
+    const selected = this.#element.querySelector('.selected');
+
+    options.forEach((option) => {
+      option.addEventListener('click', () => {
+        selected.innerText = option.innerText;
+
+        options.forEach((option) => {
+          option.classList.remove('active');
+        });
+        option.classList.add('active');
+      });
+    });
+
+    //ToDo: finish this function(catigories)
+    items.forEach((item) => {
+      if (typeof item === 'object') {
+        for (const key in item) {
+          const element = item[key];
+          // console.log(element);
+          if (typeof element === 'string') {
+            console.log(element);
+          }
+        }
+      }
+    });
+  }
+
+  #initEvent() {
+    const { event } = this.#options;
+
+    this.#list = this.#element.querySelector('.list');
+    this.#caret = this.#element.querySelector('.caret');
+
+    if (event === 'mouseenter') {
+      this.#element.addEventListener(event, () => {
+        this.#list.classList.add('open');
+        this.#caret.classList.add('caret_rotate');
+      });
+
+      this.#element.addEventListener('mouseleave', () => {
+        this.#list.classList.remove('open');
+        this.#caret.classList.remove('caret_rotate');
+      });
+    }
+  }
+
+  #customStyles(styles) {
+    if (!styles) {
+      return;
+    }
+
+    const { head, caret, list, placeholder } = styles;
+    const select = this.#element.querySelector('.cg-select');
+    const crt = this.#element.querySelector('.caret');
+    const ul = this.#element.querySelector('.list');
+    const placeh = this.#element.querySelector('.selected');
+
+    if (head) {
+      Object.entries(head).forEach(([key, value]) => {
+        select.style[key] = value;
+      });
+    }
+
+    if (caret) {
+      Object.entries(caret).forEach(([key, value]) => {
+        crt.style[key] = value;
+      });
+    }
+
+    if (ul) {
+      if (list) {
+        Object.entries(list).forEach(([key, value]) => {
+          ul.style[key] = value;
+        });
+      }
+    }
+
+    if (placeh) {
+      if (placeholder) {
+        Object.entries(placeholder).forEach(([key, value]) => {
+          placeh.style[key] = value;
+        });
+      }
+    }
+  }
+
+  #createSelected(content, styles) {
+    this.#element.innerHTML = `
+            <div class="cg-select">
+                <span class="selected">${content}</span>
+                <div class="caret"></div>
+            </div>
+    `;
+
+    if (styles) {
+      this.#customStyles(styles);
+
+      this.#element.innerHTML = `
+            <div class="cg-select" style = "${styles}">
+                <span class="selected" style = "${styles}">${content}</span>
+                <div class="caret" style = "${styles}"></div>
+            </div>
+    `;
+    }
+  }
+
+  // addItem(item) {
+  //   const { items } = this.#options;
+
+  //   console.log('Добавление елемента', item);
+
+  //   items.push(item);
+
+  //   console.log(items);
+  // }
+}

src/index.html

@@ -4,26 +4,18 @@
     <meta charset="UTF-8" />
     <meta http-equiv="X-UA-Compatible" content="IE=edge" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Dropdown-list</title>
-    <link href="main.css" rel="stylesheet" />
+    <title>Cg-Select</title>
+    <link href="./style/main.scss" rel="stylesheet" />
+    <link rel="stylesheet" href="style/customStyle.scss" />
   </head>
   <body>
     <div class="container">
-      <div class="dropdown">
-        <div class="select">
-          <span class="selected">BMW</span>
-          <div class="caret"></div>
-        </div>
+      <div class="cg-dropdown"></div>
 
-        <ul class="list">
-          <li class="list__item">Nissan</li>
-          <li class="list__item">Mersedes</li>
-          <li class="list__item">Ford</li>
-          <li class="list__item active">Opel</li>
-          <li class="list__item">Chevrolet</li>
-        </ul>
-      </div>
+      <div class="cg-dropdown2"></div>
+
+      <!-- <div class="cg-dropdown3"></div> -->
     </div>
   </body>
-  <script src="index.js"></script>
+  <script type="module" src="index.js"></script>
 </html>

src/index.js

@@ -1,27 +1,48 @@
-const dropdowns = document.querySelectorAll('.dropdown');
+import { DropDown } from './cg-dropdown';
 
-dropdowns.forEach(drop => {
-    const select = drop.querySelector('.select');
-    const caret = drop.querySelector('.caret');
-    const list = drop.querySelector('.list');
-    const options = drop.querySelectorAll('.list__item')
-    const selected = drop.querySelector('.selected')
+const dropdown = new DropDown({
+  selector: '.cg-dropdown',
 
-    select.addEventListener('click', () => {
-        caret.classList.toggle('caret-rotate');
-        list.classList.toggle('open');
-    });
+  items: ['BMW', 'Opel', 'Mersedes', 'MAN', 'max'],
+});
 
-    options.forEach(option => {
-        option.addEventListener('click', () =>{
-            selected.innerText = option.innerText;
-            caret.classList.remove('caret-rotate'); 
-            list.classList.remove('open');
+const dropdown2 = new DropDown({
+  selector: '.cg-dropdown2',
+  placeholder: 'Выберите авто',
+  items: ['BMW', 'Opel', 'Mersedes', 'MAN', 'Kamaz'],
+  event: 'mouseenter',
+  styles: {
+    head: {
+      background: 'red',
+      color: 'black',
+      width: '400px',
+    },
+    placeholder: {
+      color: 'grey',
+    },
+    caret: {
+      'border-top': '6px solid black',
+    },
+    list: {
+      background: 'red',
+      color: 'black',
+      width: '412px',
+    },
+  },
+});
 
-            options.forEach(option =>{
-                option.classList.remove('active');
-            })
-            option.classList.add('active');
-        })
-    })
-}) 
+// dropdown.addItem('Zaz');
+// const dropdown3 = new DropDown({
+//   selector: '.cg-dropdown3',
+//   selected: '',
+//   items: [
+//     {
+//       title: 'Russia',
+//       item: ['Rostov', 'Moskow'],
+//     },
+//     {
+//       title: 'Germany',
+//       item: ['Germany', 'Berlin'],
+//     },
+//   ],
+// });

src/style/main.scss

@@ -1,26 +1,26 @@
 * {
   font-size: 14px;
   font-family: Arial, Helvetica, sans-serif;
-  
 }
-body{
+
+body {
   background: #1b1e25;
 }
 
 .container {
+  display: flex;
   margin: 50px auto;
   width: 800px;
-  height: 200px;
 }
 
-.dropdown {
-  
+.cg-dropdown {
   position: relative;
+  margin-right: 10px;
 }
 
-.select {
+.cg-select {
   padding: 14px;
-  max-width: 200px;
+  min-width: 200px;
   height: 30px;
   color: #fff;
   display: flex;
@@ -31,11 +31,11 @@ body{
   cursor: pointer;
   border-radius: 5px;
   transition: 0.5s;
-}
 
-.select:hover {
-transition: 0.5s;
-  background: #394050;
+  &:hover {
+    transition: 0.5s;
+    background: #394050;
+  }
 }
 
 .caret {
@@ -45,18 +45,20 @@ transition: 0.5s;
   border-right: 5px solid transparent;
   border-top: 6px solid #fff;
   transition: 0.5s;
-}
 
-.caret-rotate {
-  transform: rotate(180deg);
-  transition: 0.5s;
+  &_rotate {
+    transform: rotate(180deg);
+    transition: 0.5s;
+  }
 }
 
 .list {
+  max-height: 230px;
+  overflow-y: auto;
   position: absolute;
   width: 212px;
   padding: 7px;
-  margin-top: 1px;
+  margin-top: -0.2px;
   list-style: none;
 
   color: white;
@@ -69,24 +71,24 @@ transition: 0.5s;
   opacity: 0;
   display: none;
   z-index: 1;
-}
 
-.list__item {
+  &__item {
     transition: 0.5s;
-  padding: 15px;
-}
+    padding: 15px;
 
-.list__item:hover {
-    transition: 0.5s;
-  cursor: pointer;
-  background: #394050;
+    &:hover {
+      transition: 0.5s;
+      cursor: pointer;
+      background: #8282822c;
+    }
+  }
 }
 
 .active {
-  background: #394050;
+  background: #8282822c;
 }
-.open {
 
+.open {
   transition: 0.5s;
   display: block;
   opacity: 1;