merge collect 3.0 changes (#2679)

* feat(tabs): implement tabs controller

feat(tabs): implement tabs controller

* fix(tabs): remove BaseTab from test

* fix(tabs): correct disabled test to check child button

* fix(tabs): dispatch event when active property changes on tab

* fix(tabs): dispatch  event only when changing from false to true

* fix(tabs): add dynamic tab demo

* fix(tabs): update RTI if tab is disabled

* refactor(tabs): mutation observer

* fix(tabs): demo js link

* fix(tabs): add TabsController to exports remove Base classes

* fix(tabs): update active tab onTabExpand

* fix(core): update overflow when childList updates

* fix(tabs): reduce mutation observer scope

* fix(tabs): add missing activeIndex getter

* fix(tabs): fix bug with tab button before styles on box variant

* chore(tabs): remove whitespace

* fix(core): undo uneeded change to RTI controller

* chore(tabs): add changeset

* chore(core): add changeset

* fix(tabs): remove base styles files

* docs(tabs): add additional documentation

* chore(tabs): update changeset

* docs(tabs): add set activeIndex jsDoc

* fix(tabs): refactor mutations callback

* fix(tabs): add override keyword

* fix(tabs): add override keyword to panel

* test(tabs): improve disabled tab testing

* refactor(tabs): check event instanceof type in static method

* docs(tabs): add active state to nested demo

* refactor(tabs): making validation methods required

* fix(tabs): additional public api

* test(tabs): refactor tab tests using nested describes

* feat(core): add tabs-controller

* fix(tabs): relink tabs controller from core

* fix(tabs): remove TabsController

* chore(tabs): update changeset

* chore(core): update changeset

* fix(tabs): remove TabsController from element package exports

* fix(core): add tabs-controller to package exports

* chore(tabs): update changeset

* fix(tabs): revert removal of base classes

* fix(tabs): re-add isExpandEvent

* chore(tabs): add changeset

* docs: update changesets

* feat(core): loosen logger host type

* docs: changeset

* docs(tabs): split up demos

* fix(tabs): loosen type of host for tabscontroller

* refactor(tabs): docs and ordering

* chore(tabs): remove commented out code

* test(tabs): remove unused aTimeout

* docs(tabs): fix inset demo

* fix(tabs): linting no aria- on slots

* docs(tabs): unify demo styles, fixing overflow

---------

Co-authored-by: Benny Powers <web@bennypowers.com>

Author: zeroedin

.changeset/hip-bags-live.md

@@ -0,0 +1,5 @@
+---
+"@patternfly/elements": minor
+---
+
+`<pf-tabs>`: improved overflow handling, added dynamic tab creation support

.changeset/logger-host-loose.md

@@ -0,0 +1,4 @@
+---
+"@patternfly/pfe-core": minor
+---
+`Logger`: loosen the type of allowed controller hosts

.changeset/overflow-controller.md

@@ -0,0 +1,5 @@
+---
+"@patternfly/core": minor
+---
+
+`OverflowController`: recalculate overflow when the window size changes and when tabs are dynamically created.

.changeset/tabs-controller.md

@@ -0,0 +1,15 @@
+---
+"@patternfly/core": minor
+---
+
+`TabsController`: Added TabsController. This controller is used to manage the state of the tabs and panels. 
+
+```ts
+#tabs = new TabsController(this, {
+  isTab: (x: Node): x is PfTab => x instanceof PfTab,
+  isPanel: (x: Node): x is PfTabPanel => x instanceof PfTabPanel,
+});
+```
+
+Please review the [Tabs 2.4 to 3.0 migration guide](https://patternflyelements.org/migration/3.0/tabs) for more 
+information.

core/pfe-core/controllers/overflow-controller.ts

@@ -1,22 +1,44 @@
-import type { ReactiveController, ReactiveControllerHost } from 'lit';
+import type { ReactiveController, ReactiveElement } from 'lit';
 
 import { isElementInView } from '@patternfly/pfe-core/functions/isElementInView.js';
 
 export interface Options {
+  /**
+   * Force hide the scroll buttons regardless of overflow
+   */
   hideOverflowButtons?: boolean;
+  /**
+   * Delay in ms to wait before checking for overflow
+   */
+  scrollTimeoutDelay?: number;
 }
 
 export class OverflowController implements ReactiveController {
+  static #instances = new Set<OverflowController>();
+
+  static {
+    // on resize check for overflows to add or remove scroll buttons
+    window.addEventListener('resize', () => {
+      for (const instance of this.#instances) {
+        instance.onScroll();
+      }
+    }, { capture: false });
+  }
+
+  #host: ReactiveElement;
   /** Overflow container */
   #container?: HTMLElement;
   /** Children that can overflow */
   #items: HTMLElement[] = [];
 
-  #scrollTimeoutDelay = 0;
+  #scrollTimeoutDelay: number;
   #scrollTimeout?: ReturnType<typeof setTimeout>;
 
   /** Default state */
-  #hideOverflowButtons = false;
+  #hideOverflowButtons: boolean;
+
+  #mo = new MutationObserver(this.#mutationsCallback.bind(this));
+
   showScrollButtons = false;
   overflowLeft = false;
   overflowRight = false;
@@ -29,17 +51,32 @@ export class OverflowController implements ReactiveController {
     return this.#items.at(-1);
   }
 
-  constructor(public host: ReactiveControllerHost & Element, private options?: Options) {
-    this.host.addController(this);
-    if (options?.hideOverflowButtons) {
-      this.#hideOverflowButtons = options?.hideOverflowButtons;
+  constructor(public host: ReactiveElement, private options?: Options) {
+    this.#hideOverflowButtons = options?.hideOverflowButtons ?? false;
+    this.#scrollTimeoutDelay = options?.scrollTimeoutDelay ?? 0;
+    if (host.isConnected) {
+      OverflowController.#instances.add(this);
+    }
+    (this.#host = host).addController(this);
+    this.#mo.observe(host, { attributes: false, childList: true, subtree: true });
+  }
+
+  async #mutationsCallback(mutations: MutationRecord[]): Promise<void> {
+    for (const mutation of mutations) {
+      if (mutation.type === 'childList') {
+        this.#setOverflowState();
+        this.#host.requestUpdate();
+      }
     }
   }
 
   #setOverflowState(): void {
     if (!this.firstItem || !this.lastItem || !this.#container) {
       return;
     }
+    const prevLeft = this.overflowLeft;
+    const prevRight = this.overflowRight;
+
     this.overflowLeft = !this.#hideOverflowButtons && !isElementInView(this.#container, this.firstItem);
     this.overflowRight = !this.#hideOverflowButtons && !isElementInView(this.#container, this.lastItem);
     let scrollButtonsWidth = 0;
@@ -48,7 +85,11 @@ export class OverflowController implements ReactiveController {
     }
     this.showScrollButtons = !this.#hideOverflowButtons &&
     this.#container.scrollWidth > (this.#container.clientWidth + scrollButtonsWidth);
-    this.host.requestUpdate();
+
+    // only request update if there has been a change
+    if ((prevLeft !== this.overflowLeft) || (prevRight !== this.overflowRight)) {
+      this.host.requestUpdate();
+    }
   }
 
   init(container: HTMLElement, items: HTMLElement[]) {