add comment

Author: adolgachev

src/material/chips/chip-row.ts

@@ -93,9 +93,17 @@ export class MatChipRow extends MatChip implements AfterViewInit {
   /** The projected chip edit input. */
   @ContentChild(MatChipEditInput) contentEditInput?: MatChipEditInput;
 
-  _isEditing = false;
+  /**
+   * Set with a timeout when the chips has been focused via mouse or keyboard.
+   *
+   * This allows us to ensure chip is already focused when deciding whether to enter the
+   * edit mode on a subsequent click. Otherwise, the chip appears focused when handling the
+   * first click event.
+   */
   _alreadyFocused = false;
 
+  _isEditing = false;
+
   constructor(...args: unknown[]);
 
   constructor() {
@@ -110,6 +118,7 @@ export class MatChipRow extends MatChip implements AfterViewInit {
     });
     this._onFocus.pipe(takeUntil(this.destroyed)).subscribe(() => {
       if (!this._isEditing && !this.disabled) {
+        // Need a timeout to ensure flag not set while handling the first click.
         this._ngZone.runOutsideAngular(() => {
           setTimeout(() => (this._alreadyFocused = true), 100);
         });