Screen keyboard - Javascript

screen-keyboard-javascript.markdown

Screen keyboard - Javascript

A Pen by Vasilii V on CodePen.

License.

ScreenKeyboard.html

<link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">

<textarea id ='text'></textarea>


  
</div>

script.js

const Keyboard = {
  elems: {
    main: null,
    keysContainer: null,
    keys: []  
  },
  eventHandlers: {
    oninput: null,
    onclose: null,
    isClosed: false
  },
  properties: {
    capslock: false,
    value: []
  },
  init() {
    this.elems.main = document.createElement('div');
    this.elems.keysContainer = document.createElement('div');
   this.elems.main.classList.add('keyboard');
    this.elems.keysContainer.classList.add('keyboard-keys');
   this.elems.keysContainer.appendChild(this.createKeys());
    
    this.elems.keys = this.elems.keysContainer.querySelectorAll('.keyboard-key');
    this.elems.main.appendChild(this.elems.keysContainer);
    
    console.log(this.elems.keysContainer)
    
    document.body.appendChild(this.elems.main);
  },
  createKeys() {
    let fragment = document.createDocumentFragment();
    
    let keyboard = [1,2,3,4,5,6,7,8,9,0,'backspace','q','w','e','r','t','y','u','i','o','p', 'capslock','a','s','d','f','g','h','j','k','l','enter','z','x','c','v','b','n','m','space', 'done'];
    
    let createIcon = name => {
      return `<i class='material-icons'>${name}</>`
    }
    
    keyboard.forEach(e => {
      let keyEl = document.createElement('button');
      //console.log(keyEl);
      let isBreak;
      if (e== 'backspace') {
        isBreak = true;
      }
      if (e == 'p') {
        isBreak = true;
      }
      if (e =='enter') {
        isBreak = true;
      }
      if (e == 'm') {
        isBreak = true;
      }
      keyEl.setAttribute('type', 'button');
      keyEl.classList.add('keyboard-key');
      
      if (e == 'backspace') {
        keyEl.classList.add('keyboard-key--wide');
        keyEl.innerHTML = createIcon('backspace');
        keyEl.addEventListener('click',()=> {
          this.properties.value.pop();
           document.getElementById('text').textContent = this.properties.value.join(''); 
          this.trigger('input');
        }) 
        
         
        
      } else if (e == 'capslock') {
          keyEl.classList.add('keyboard-key--wide', 'keyboard-key--activatable', 'caps');
        keyEl.innerHTML = 'caps'
        keyEl.addEventListener('click',()=> {
          this.capslock();
         this.properties.capslock ?  keyEl.classList.add('keyboard-key--active') : keyEl.classList.remove('keyboard-key--active')
        }) 
        
        
          } else if (e == 'enter') {
            keyEl.classList.add('keyboard-key--wide');
        keyEl.innerHTML = createIcon('keyboard_return');
        keyEl.addEventListener('click',()=> {
          this.properties.value.push('\n');
           document.getElementById('text').textContent = this.properties.value.join(''); 
          this.trigger('input');
        }) 
          } else if (e == 'space') {
            keyEl.classList.add('keyboard-key--extra-wide');
        keyEl.innerHTML = createIcon('keyboard');
        keyEl.addEventListener('click',()=> {
          this.properties.value.push(' ');
          this.trigger('input');
           document.getElementById('text').textContent = this.properties.value.join(''); 
        }) 
          } else if (e == 'done') {
           keyEl.classList.add('keyboard-key--wide','keyboard-key--dark');
            keyEl.id = 'donebtn';
            
        keyEl.innerHTML = createIcon('check_circle');
        keyEl.addEventListener('click',()=> {
          this.close();
          this.trigger('close');
        }) 
          } else {
            keyEl.classList.add('keyboard-key');
            keyEl.textContent = e;
          
            keyEl.addEventListener('click',()=> {
              if (/[0-9]/.test(e)){
                this.properties.value.push(e);
              document.getElementById('text').textContent = this.properties.value.join('');
            } else{
             console.log(this.properties.value);
          this.properties.capslock ? this.properties.value.push(e.toUpperCase()) : this.properties.value.push(e.toLowerCase());
               document.getElementById('text').textContent = this.properties.value.join(''); 
          this.trigger(e);
            }
        }) 
          }
      //console.log(keyEl);
   fragment.appendChild(keyEl);
      if (isBreak) {
        let br = document.createElement('br');
        fragment.appendChild(br);
      }
    })
   
    return fragment;
    
    
  },
  trigger(handler) {
    console.log(handler);
    if (typeof this.eventHandlers[handler] == 'function') {
      this.eventHandlers[handler](this.properties.value)
    }
  },
  
  capslock() {
  this.properties.capslock = !this.properties.capslock;
    //console.log(this.properties.capslock);
   for (let key of this.elems.keys) {
     if (key.childElementCount == 0) {
       key.textContent = this.properties.capslock ? key.textContent.toUpperCase() : key.textContent.toLowerCase();
      
     }
   }
    console.log(this.properties.value)
},
  openclose(initval, open, close) {
    let init = initval.split('');
    this.properties.value = this.properties.value.concat(init) || '';
    
    
  },
  close() {
    this.elems.main.classList.add('keyboard--hidden');
    this.eventHandlers.isClosed = true;
  }
};

window.addEventListener('DOMContentLoaded', () => {
  Keyboard.init();
})

document.getElementById('text').addEventListener('click', ()=>{
  console.log(Keyboard.eventHandlers.isClosed)
  if (Keyboard.eventHandlers.isClosed) {
    console.log(Keyboard.eventHandlers.isClosed)
    Keyboard.init();
    Keyboard.eventHandlers.isClosed = false;
  } else {console.log('not closed')}
})

style.css

textarea {
  position: absolute;
  top: 0px;
  right: 25%;
  width: 50%;
}

.keyboard {
    position: fixed;
 
    left: 0;
    bottom: 0;
    width: 100%;
    height: 50%;
    padding: 5px 0;
    background: #004134;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
    user-select: none;
    transition: bottom 0.4s;
}

.keyboard--hidden {
    bottom: -100%;
    color: white
}

.keyboard-keys {
    text-align: center;
}

.keyboard-key {
    height: 45px;
    width: 6%;
    max-width: 90px;
    margin: 3px;
    border-radius: 4px;
    border: none;
    background: rgba(255, 255, 255, 0.2);
    color: black;
    font-size: 1.05rem;
    outline: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    vertical-align: top;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
    position: relative;
}

.keyboard-key:active {
    background: rgba(255, 255, 255, 0.12);
}

.keyboard-key--wide {
    width: 12%;
}

.keyboard-key--extra-wide {
    width: 36%;
    max-width: 500px;
}

.keyboard-key--activatable::after {
    content: '';
    top: 10px;
    right: 10px;
    position: absolute;
    width: 8px;
    height: 8px;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 50%;
}

.keyboard-key--active::after {
    background: #08ff00;
}

.keyboard-key--dark {
    background: rgba(0, 0, 0, 0.25);
}
.caps > i {
  color: red;
  
}