Added the (optional) scrolling effect back in as it is declared legal in some countries now.

.gitignore

@@ -1,2 +1,3 @@
 node_modules
 build/index.js.LICENSE.txt
+example/*

CHANGELOG.md

@@ -5,6 +5,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [[6.3.0](https://github.com/Mastermindzh/react-cookie-consent/releases/tag/6.2.3))]
+
+- Added the (optional) scrolling effect back in as it is declared legal in some countries now.
+
 ## [[6.2.3](https://github.com/Mastermindzh/react-cookie-consent/releases/tag/6.2.3)]
 
 - Added support for IE11, the webpack generated runtime-code should not use arrow functions

README.md

@@ -84,12 +84,17 @@ You can optionally set some props like this (next chapter will show all props):
 </CookieConsent>
 ```
 
-One of the props (onAccept) is a function, this function will be called after the user has clicked the accept button. You can provide a function like so:
+One of the props (onAccept) is a function, this function will be called after the user has clicked the accept button. It is called with an object containing a boolean property `acceptedByScrolling` to indicate if the acceptance was triggered by the user scrolling You can provide a function like so:
 
 ```js
 <CookieConsent
-  onAccept={() => {
+  onAccept={(acceptedByScrolling) => {
+    if (acceptedByScrolling) {
+      // triggered if user scrolls past threshold
+      alert("Accept was triggered by user scrolling");
+    } else {
       alert("Accept was triggered by clicking the Accept button");
+    }
   }}
 ></CookieConsent>
 ```
@@ -118,7 +123,7 @@ console.log(getCookieConsentValue());
 ## Props
 
 | Prop                     |               Type                | Default value                        | Description                                                                                                                             |
-| -------------------- | :-------------------------------: | ------------------------------------ | --------------------------------------------------------------------------------------------------------------------------------------- |
+| ------------------------ | :-------------------------------: | ------------------------------------ | --------------------------------------------------------------------------------------------------------------------------------------- |
 | location                 | string, "top", "bottom" or "none" | "bottom"                             | Syntactic sugar to easily enable you to place the bar at the top or the bottom of the browser window. Use "none" to disable.            |
 | children                 |     string or React component     |                                      | Content to appear inside the bar                                                                                                        |
 | disableStyles            |              boolean              | false                                | If enabled the component will have no default style. (you can still supply style through props)                                         |
@@ -156,6 +161,8 @@ console.log(getCookieConsentValue());
 | cookieSecurity           |              boolean              | undefined                            | Cookie security level. Defaults to true unless running on http.                                                                         |
 | ariaAcceptLabel          |              string               | Accept cookies                       | Aria label to set on the accept button                                                                                                  |
 | ariaDeclineLabel         |              string               | Decline cookies                      | Aria label to set on the decline button                                                                                                 |
+| acceptOnScroll           |              boolean              | false                                | Defines whether "accept" should be fired after the user scrolls a certain distance (see acceptOnScrollPercentage)                       |
+| acceptOnScrollPercentage |              number               | 25                                   | Percentage of the page height the user has to scroll to trigger the accept function if acceptOnScroll is enabled                        |
 
 ## Debugging it
 
@@ -229,6 +236,23 @@ Which results in:
 
 ![bootstrap styling](https://github.com/Mastermindzh/react-cookie-consent/blob/master/images/css_classes.png?raw=true)
 
+#### Accept on scroll
+
+You can make the cookiebar disappear after scrolling a certain percentage using acceptOnScroll and acceptOnScrollPercentage.
+It is legal in some use-cases, [Italy](https://www.garanteprivacy.it/web/guest/home/docweb/-/docweb-display/docweb/9679893) being one of them. Consult your legislation on whether this is allowed.
+
+```js
+<CookieConsent
+  acceptOnScroll={true}
+  acceptOnScrollPercentage={50}
+  onAccept={(byScroll) => {
+    alert(`consent given. \n\n By scrolling? ${byScroll}`);
+  }}
+>
+  Hello scroller :)
+</CookieConsent>
+```
+
 #### Flipping the buttons
 
 If you enable the decline button you can pass along the "flipButtons" property to turn the buttons around:

src/index.d.ts

@@ -12,7 +12,7 @@ export interface CookieConsentProps {
   children?: React.ReactNode;
   disableStyles?: boolean;
   hideOnAccept?: boolean;
-  onAccept?: Function;
+  onAccept?: (acceptedByScrolling?: boolean) => void;
   onDecline?: Function;
   buttonText?: Function | React.ReactNode;
   declineButtonText?: Function | React.ReactNode;
@@ -39,6 +39,8 @@ export interface CookieConsentProps {
   overlayStyle?: object;
   ariaAcceptLabel?: string;
   ariaDeclineLabel?: string;
+  acceptOnScroll?: boolean;
+  acceptOnScrollPercentage?: number;
 }
 
 export default class CookieConsent extends React.Component<CookieConsentProps, {}> {}

src/index.js

@@ -116,21 +116,31 @@ class CookieConsent extends Component {
     // if cookie undefined or debug
     if (this.getCookieValue() === undefined || debug) {
       this.setState({ visible: true });
+      // if acceptOnScroll is set to true and (cookie is undefined or debug is set to true), add a listener.
+      if (this.props.acceptOnScroll) {
+        window.addEventListener("scroll", this.handleScroll, { passive: true });
       }
     }
+  }
+
+  componentWillUnmount() {
+    // remove listener if still set
+    this.removeScrollListener();
+  }
 
   /**
    * Set a persistent accept cookie
    */
-  accept() {
+  accept(acceptedByScrolling = false) {
     const { cookieName, cookieValue, hideOnAccept, onAccept } = this.props;
 
     this.setCookie(cookieName, cookieValue);
 
-    onAccept();
+    onAccept(acceptedByScrolling ?? false);
 
     if (hideOnAccept) {
       this.setState({ visible: false });
+      this.removeScrollListener();
     }
   }
 
@@ -138,13 +148,8 @@ class CookieConsent extends Component {
    * Set a persistent decline cookie
    */
   decline() {
-    const {
+    const { cookieName, declineCookieValue, hideOnDecline, onDecline, setDeclineCookie } =
-      cookieName,
+      this.props;
-      declineCookieValue,
-      hideOnDecline,
-      onDecline,
-      setDeclineCookie,
-    } = this.props;
 
     if (setDeclineCookie) {
       this.setCookie(cookieName, declineCookieValue);
@@ -191,6 +196,35 @@ class CookieConsent extends Component {
     return getCookieConsentValue(cookieName);
   }
 
+  /**
+   * checks whether scroll has exceeded set amount and fire accept if so.
+   */
+  handleScroll = () => {
+    const { acceptOnScrollPercentage } = this.props;
+
+    // (top / height) - height * 100
+    let rootNode = document.documentElement,
+      body = document.body,
+      top = "scrollTop",
+      height = "scrollHeight";
+
+    let percentage =
+      ((rootNode[top] || body[top]) /
+        ((rootNode[height] || body[height]) - rootNode.clientHeight)) *
+      100;
+
+    if (percentage > acceptOnScrollPercentage) {
+      this.accept(true);
+    }
+  };
+
+  removeScrollListener = () => {
+    const { acceptOnScroll } = this.props;
+    if (acceptOnScroll) {
+      window.removeEventListener("scroll", this.handleScroll);
+    }
+  };
+
   render() {
     // If the bar shouldn't be visible don't render anything.
     if (!this.state.visible) {
@@ -369,6 +403,8 @@ CookieConsent.propTypes = {
   overlayStyle: PropTypes.object,
   ariaAcceptLabel: PropTypes.string,
   ariaDeclineLabel: PropTypes.string,
+  acceptOnScroll: PropTypes.bool,
+  acceptOnScrollPercentage: PropTypes.number,
 };
 
 CookieConsent.defaultProps = {
@@ -403,6 +439,8 @@ CookieConsent.defaultProps = {
   overlayClasses: "",
   ariaAcceptLabel: "Accept cookies",
   ariaDeclineLabel: "Decline cookies",
+  acceptOnScroll: false,
+  acceptOnScrollPercentage: 25,
 };
 
 export default CookieConsent;