From b16e6a3f9fc4b0962a8c997f1ec047e1659098bb Mon Sep 17 00:00:00 2001
From: Chintan Kavathia <chintankumar.kavathia@siemens.com>
Date: Mon, 11 Nov 2024 18:13:01 +0530
Subject: [PATCH] refactor: remove useless utils

BREAKING CHANGE: removed polyfill for `elementsFromPoint` since `elementsFromPoint` is now supported by all major browsers.
---
 projects/ngx-datatable/src/lib/events.ts      |  8 ----
 .../src/lib/utils/elm-from-point.ts           | 45 -------------------
 .../src/lib/utils/facade/browser.ts           | 25 -----------
 .../src/lib/utils/visibility-observer.ts      | 24 ----------
 projects/ngx-datatable/src/public-api.ts      |  1 -
 5 files changed, 103 deletions(-)
 delete mode 100644 projects/ngx-datatable/src/lib/events.ts
 delete mode 100644 projects/ngx-datatable/src/lib/utils/elm-from-point.ts
 delete mode 100644 projects/ngx-datatable/src/lib/utils/facade/browser.ts
 delete mode 100644 projects/ngx-datatable/src/lib/utils/visibility-observer.ts

diff --git a/projects/ngx-datatable/src/lib/events.ts b/projects/ngx-datatable/src/lib/events.ts
deleted file mode 100644
index 83664a030..000000000
--- a/projects/ngx-datatable/src/lib/events.ts
+++ /dev/null
@@ -1,8 +0,0 @@
-declare let global: any;
-
-export const MouseEvent = (((typeof window !== 'undefined' && window) as any) || (global as any))
-  .MouseEvent as MouseEvent;
-export const KeyboardEvent = (((typeof window !== 'undefined' && window) as any) || (global as any))
-  .KeyboardEvent as KeyboardEvent;
-export const Event = (((typeof window !== 'undefined' && window) as any) || (global as any))
-  .Event as Event;
diff --git a/projects/ngx-datatable/src/lib/utils/elm-from-point.ts b/projects/ngx-datatable/src/lib/utils/elm-from-point.ts
deleted file mode 100644
index d86a08b67..000000000
--- a/projects/ngx-datatable/src/lib/utils/elm-from-point.ts
+++ /dev/null
@@ -1,45 +0,0 @@
-if (typeof document !== 'undefined' && !document.elementsFromPoint) {
-  document.elementsFromPoint = elementsFromPoint;
-}
-
-/**
- * Polyfill for `elementsFromPoint`
- *
- * https://developer.mozilla.org/en-US/docs/Web/API/Document/elementsFromPoint
- * https://gist.github.com/iddan/54d5d9e58311b0495a91bf06de661380
- * https://gist.github.com/oslego/7265412
- */
-export function elementsFromPoint(x: number, y: number) {
-  const elements = [];
-  const previousPointerEvents = [];
-  let current: any; // TODO: window.getComputedStyle should be used with inferred type (Element)
-  let i;
-  let d;
-
-  //if (document === undefined) return elements;
-
-  // get all elements via elementFromPoint, and remove them from hit-testing in order
-  while (
-    (current = document.elementFromPoint(x, y)) &&
-    elements.indexOf(current) === -1 &&
-    current != null
-  ) {
-    // push the element and its current style
-    elements.push(current);
-    previousPointerEvents.push({
-      value: current.style.getPropertyValue('pointer-events'),
-      priority: current.style.getPropertyPriority('pointer-events')
-    });
-
-    // add "pointer-events: none", to get to the underlying element
-    current.style.setProperty('pointer-events', 'none', 'important');
-  }
-
-  // restore the previous pointer-events values
-  for (i = previousPointerEvents.length; (d = previousPointerEvents[--i]); ) {
-    elements[i].style.setProperty('pointer-events', d.value ? d.value : '', d.priority);
-  }
-
-  // return our results
-  return elements;
-}
diff --git a/projects/ngx-datatable/src/lib/utils/facade/browser.ts b/projects/ngx-datatable/src/lib/utils/facade/browser.ts
deleted file mode 100644
index e23b7f92c..000000000
--- a/projects/ngx-datatable/src/lib/utils/facade/browser.ts
+++ /dev/null
@@ -1,25 +0,0 @@
-/**
- * @license
- * Copyright Google Inc. All Rights Reserved.
- *
- * Use of this source code is governed by an MIT-style license that can be
- * found in the LICENSE file at https://angular.io/license
- */
-
-/**
- * JS version of browser APIs. This library can only run in the browser.
- */
-const win = (typeof window !== 'undefined' && window) || ({} as any);
-
-export { win as window };
-export const document = win.document;
-export const location = win.location;
-export const gc = win.gc ? () => win.gc() : (): any => null;
-export const performance = win.performance ? win.performance : null;
-export const Event = win.Event;
-export const MouseEvent = win.MouseEvent;
-export const KeyboardEvent = win.KeyboardEvent;
-export const EventTarget = win.EventTarget;
-export const History = win.History;
-export const Location = win.Location;
-export const EventListener = win.EventListener;
diff --git a/projects/ngx-datatable/src/lib/utils/visibility-observer.ts b/projects/ngx-datatable/src/lib/utils/visibility-observer.ts
deleted file mode 100644
index 773f3e7f7..000000000
--- a/projects/ngx-datatable/src/lib/utils/visibility-observer.ts
+++ /dev/null
@@ -1,24 +0,0 @@
-import { NgZone } from '@angular/core';
-
-export function checkVisibility(element: any, callback: any, zone: NgZone) {
-  let timeout: any;
-
-  function check() {
-    // https://davidwalsh.name/offsetheight-visibility
-    const { offsetHeight, offsetWidth } = element;
-
-    if (offsetHeight && offsetWidth) {
-      clearTimeout(timeout);
-      if (callback) {
-        zone.run(() => callback());
-      }
-    } else {
-      clearTimeout(timeout);
-      zone.runOutsideAngular(() => {
-        timeout = setTimeout(() => check(), 50);
-      });
-    }
-  }
-
-  check();
-}
diff --git a/projects/ngx-datatable/src/public-api.ts b/projects/ngx-datatable/src/public-api.ts
index b96833789..876bb569f 100644
--- a/projects/ngx-datatable/src/public-api.ts
+++ b/projects/ngx-datatable/src/public-api.ts
@@ -58,5 +58,4 @@ export * from './lib/utils/throttle';
 export * from './lib/utils/sort';
 export * from './lib/utils/row-height-cache';
 export * from './lib/utils/column-helper';
-export * from './lib/utils/elm-from-point';
 export * from './lib/utils/tree';