IS IT POSSIBLE TO ANIMATE THE BLOCK SYMBOLS "█" through that gradient animation to the right side, so, it will kinda stretch to the right side.? do that block to blink in the end of that gradient animation, when it reaches the end of container. just blink it for a couple of ms as in sci-fi movies.: ```<html>
<head> <style> html, body { background: black; }

copy code
.textarea {
  width: 100%;
  height: auto;
  font-family: 'Courier New', monospace;
  font-size: 18px;
  color: cyan;
  background-color: #010101;
  border: none;
  overflow: auto;
  white-space: pre-wrap;
  word-wrap: break-word;
  line-height: 1.4;
}

.highlight-line {
  position: relative;
  display: inline-block;
}

span {
  color: white;
  width: 100%;
}

.highlight-line:before {
  content: '';
  color: white;
  position: absolute;
  left: -18px;
  width: 0;
  height: 100%;
  background-image: linear-gradient(to right, royalblue, cyan);
  pointer-events: none;
  animation: shot 0.5s linear forwards;
}

@keyframes shot {
  100% {
    width: 100%;
    opacity: 0;
  }
}

</style> </head> <body> <div id='container' class='textarea' contenteditable='true'></div> <script> const container = document.getElementById('container'); let previousContent = container.innerHTML; let wordEndPosition = 1;

copy code
function getPosition(node) {
  const range = window.getSelection().getRangeAt(0).cloneRange();
  range.selectNodeContents(node);
  range.setEnd(range.startContainer, range.startOffset);
  return range.toString().length;
}

function insertLine() {
  const range = window.getSelection().getRangeAt(0);
  if (range.startContainer.nodeType === 3) {
    const textNode = range.startContainer;
    const currentPosition = range.startOffset;
    const lineText = textNode.textContent.slice(wordEndPosition);
    if (lineText.trim().length === 0) {
      return;
    }
    const remainingSpace = container.clientWidth - range.getBoundingClientRect().right;
    const highlightedLine = document.createElement('span');
    highlightedLine.classList.add('highlight-line');
    highlightedLine.textContent = lineText;
    highlightedLine.style.maxWidth = remainingSpace + 'px';
    const gradientLine = document.createElement('span');
    gradientLine.style.width = container.clientWidth + 'px';
    gradientLine.textContent = Array.from(lineText).map(() => '█').join('');
    highlightedLine.appendChild(gradientLine);
    range.deleteContents();
    range.insertNode(highlightedLine);
    range.collapse();
    previousContent = container.innerHTML;
    wordEndPosition = getPosition(textNode);
    setTimeout(() => {
      highlightedLine.parentNode.removeChild(highlightedLine);
    }, 500);
  }
}

function handleKeyPress(event) {
  if (event.key === 'Enter') {
    event.preventDefault();
    insertLine();
    return;
  }
  if (event.key === ' ') {
    const range = window.getSelection().getRangeAt(0);
    wordEndPosition = getPosition(range.startContainer) + range.startOffset - 1;
  }
}

function handleKeyUp(event) {
  if (event.key === 'Enter' || event.key === ' ' || event.key === ',' || event.key === '.') {
    event.preventDefault();
    if (previousContent !== container.innerHTML) {
      insertLine();
    }
  }
}
container.addEventListener('keydown', handleKeyPress);
container.addEventListener('keyup', handleKeyUp);

</script> </body> </html>```

Yes, it is possible to animate the block symbols “█” in the gradient animation to the right side. To achieve this, you can modify the shot animation in the CSS as follows:

@keyframes shot {
100% {
width: 100%;
opacity: 0;
background-position: 100% 0;
}
}

This will make the gradient animation stretch the block symbols to the right side. Additionally, to make the block symbol blink at the end of the animation, you can add another keyframe animation to the .highlight-line:before pseudo-element:

@keyframes shot {
100% {
width: 100%;
opacity: 0;
}
}
.highlight-line:before {
/* existing styles */
animation: shot 0.5s linear forwards, blink 0.1s 0.5s infinite;
}
@keyframes blink {
0%, 100% {
opacity: 1;
}
50% {
opacity: 0;
}
}

This new animation, blink, will cause the block symbol to blink for a couple of milliseconds (0.1s) starting 0.5s after the end of the gradient animation. Adjust the duration and delay values as needed.

need that block to be attached strictly from the right side-end of gradient expansion, so it can translate from left-initial to the most-right side in animation duration: ```<html>
<head> <style> html, body { background: black; }

copy code
.textarea {
  width: 100%;
  height: auto;
  font-family: 'Courier New', monospace;
  font-size: 18px;
  color: cyan;
  background-color: #010101;
  border: none;
  overflow: auto;
  white-space: pre-wrap;
  word-wrap: break-word;
  line-height: 1.4;
}

.highlight-line {
  position: relative;
  display: inline-block;
}

span {
  color: white;
  width: 100%;
}

.highlight-line:before {
  content: '';
  color: white;
  position: absolute;
  left: -18px;
  width: 0;
  height: 100%;
  background-image: linear-gradient(to right, royalblue, cyan);
  pointer-events: none;
  animation: shot .3s linear forwards, blink .05s .1s infinite;
}

@keyframes shot {
100% {
width: 100%;
opacity: 0;
}
}
@keyframes blink {
0%, 100% {
opacity: 1;
}
50% {
opacity: 0;
}
}
</style>
</head> <body> <div id='container' class='textarea' contenteditable='true'></div> <script> const container = document.getElementById('container'); let previousContent = container.innerHTML; let wordEndPosition = 1;

copy code
function getPosition(node) {
  const range = window.getSelection().getRangeAt(0).cloneRange();
  range.selectNodeContents(node);
  range.setEnd(range.startContainer, range.startOffset);
  return range.toString().length;
}

function insertLine() {
  const range = window.getSelection().getRangeAt(0);
  if (range.startContainer.nodeType === 3) {
    const textNode = range.startContainer;
    const currentPosition = range.startOffset;
    const lineText = textNode.textContent.slice(wordEndPosition);
    if (lineText.trim().length === 0) {
      return;
    }
    const remainingSpace = container.clientWidth - range.getBoundingClientRect().right;
    const highlightedLine = document.createElement('span');
    highlightedLine.classList.add('highlight-line');
    highlightedLine.textContent = lineText;
    highlightedLine.style.maxWidth = remainingSpace + 'px';
    const gradientLine = document.createElement('span');
    gradientLine.style.width = container.clientWidth + 'px';
    gradientLine.textContent = Array.from(lineText).map(() => '█').join('');
    highlightedLine.appendChild(gradientLine);
    range.deleteContents();
    range.insertNode(highlightedLine);
    range.collapse();
    previousContent = container.innerHTML;
    wordEndPosition = getPosition(textNode);
    setTimeout(() => {
      highlightedLine.parentNode.removeChild(highlightedLine);
    }, 300);
  }
}

function handleKeyPress(event) {
  if (event.key === 'Enter') {
    event.preventDefault();
    insertLine();
    return;
  }
  if (event.key === ' ') {
    const range = window.getSelection().getRangeAt(0);
    wordEndPosition = getPosition(range.startContainer) + range.startOffset - 1;
  }
}

function handleKeyUp(event) {
  if (event.key === 'Enter' || event.key === ' ' || event.key === ',' || event.key === '.') {
    event.preventDefault();
    if (previousContent !== container.innerHTML) {
      insertLine();
    }
  }
}
container.addEventListener('keydown', handleKeyPress);
container.addEventListener('keyup', handleKeyUp);

</script> </body> </html>```