fix(chips): Make event handlers on Chip public (#2997)

packages/mdc-chips/README.md

@@ -282,6 +282,9 @@ Method Signature | Description
 `getShouldRemoveOnTrailingIconClick() => boolean` | Returns whether a trailing icon click should trigger exit/removal of the chip
 `setShouldRemoveOnTrailingIconClick(shouldRemove: boolean) => void` | Sets whether a trailing icon click should trigger exit/removal of the chip
 `beginExit() => void` | Begins the exit animation which leads to removal of the chip
+`handleInteraction(evt: Event) => void` | Handles an interaction event on the root element
+`handleTransitionEnd(evt: Event) => void` | Handles a transition end event on the root element
+`handleTrailingIconInteraction(evt: Event) => void` | Handles an interaction event on the trailing icon element
 
 #### `MDCChipSetFoundation`
 

packages/mdc-chips/chip/foundation.js

@@ -72,11 +72,11 @@ class MDCChipFoundation extends MDCFoundation {
      * */
     this.shouldRemoveOnTrailingIconClick_ = true;
     /** @private {function(!Event): undefined} */
-    this.interactionHandler_ = (evt) => this.handleInteraction_(evt);
+    this.interactionHandler_ = (evt) => this.handleInteraction(evt);
     /** @private {function(!Event): undefined} */
-    this.transitionEndHandler_ = (evt) => this.handleTransitionEnd_(evt);
+    this.transitionEndHandler_ = (evt) => this.handleTransitionEnd(evt);
     /** @private {function(!Event): undefined} */
-    this.trailingIconInteractionHandler_ = (evt) => this.handleTrailingIconInteraction_(evt);
+    this.trailingIconInteractionHandler_ = (evt) => this.handleTrailingIconInteraction(evt);
   }
 
   init() {
@@ -142,7 +142,7 @@ class MDCChipFoundation extends MDCFoundation {
    * Handles an interaction event on the root element.
    * @param {!Event} evt
    */
-  handleInteraction_(evt) {
+  handleInteraction(evt) {
     if (evt.type === 'click' || evt.key === 'Enter' || evt.keyCode === 13) {
       this.adapter_.notifyInteraction();
     }
@@ -152,7 +152,7 @@ class MDCChipFoundation extends MDCFoundation {
    * Handles a transition end event on the root element.
    * @param {!Event} evt
    */
-  handleTransitionEnd_(evt) {
+  handleTransitionEnd(evt) {
     // Handle transition end event on the chip when it is about to be removed.
     if (this.adapter_.eventTargetHasClass(/** @type {!EventTarget} */ (evt.target), cssClasses.CHIP_EXIT)) {
       if (evt.propertyName === 'width') {
@@ -197,7 +197,7 @@ class MDCChipFoundation extends MDCFoundation {
    * prevent the ripple from activating on interaction with the trailing icon.
    * @param {!Event} evt
    */
-  handleTrailingIconInteraction_(evt) {
+  handleTrailingIconInteraction(evt) {
     evt.stopPropagation();
     if (evt.type === 'click' || evt.key === 'Enter' || evt.keyCode === 13) {
       this.adapter_.notifyTrailingIconInteraction();