Bug on double click fixed and esc fixed.

Author: kpinnipa

src/PreviewSnippet.tsx

@@ -59,11 +59,11 @@ export class Preview<T> extends Widget {
 
  if (Preview.tracker.size > 0) {
  const previous = Preview.tracker.currentWidget;
- document.getElementsByClassName("drag-hover")[previous._id].classList.remove("drag-hover-clicked");
- document.getElementsByClassName("elyra-codeSnippet-item")[previous._id].classList.remove("elyra-codeSnippet-item-clicked");
+ if (previous._title != this._title) {
+ document.getElementsByClassName("drag-hover")[previous._id].classList.remove("drag-hover-clicked");
+ document.getElementsByClassName("elyra-codeSnippet-item")[previous._id].classList.remove("elyra-codeSnippet-item-clicked");
+ }
  if (previous._title === this._title) {
- document.getElementsByClassName("drag-hover")[this._id].classList.remove("drag-hover-clicked");
- document.getElementsByClassName("elyra-codeSnippet-item")[this._id].classList.remove("elyra-codeSnippet-item-clicked"); 
  if (previous.node.classList.contains('inactive')) {
  previous.node.classList.remove('inactive');
  this.ready = false;
@@ -160,6 +160,8 @@ export class Preview<T> extends Widget {
  // Check for escape key
  switch (event.keyCode) {
  case 27: // Escape.
+ document.getElementsByClassName("drag-hover")[this._id].classList.remove("drag-hover-clicked");
+ document.getElementsByClassName("elyra-codeSnippet-item")[this._id].classList.remove("elyra-codeSnippet-item-clicked");
  event.stopPropagation();
  event.preventDefault();
  this.reject();