Update cookie value (#125)

* Chore: resetCookieConsentValue function

* Chore: VISIBLE_OPTIONS enum & render update in order to use it

* Readme review

.gitignore

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

CHANGELOG.md

@@ -5,6 +5,41 @@ 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.
+
+## [6.2.4]
+
+- version bumps :)
+
+## [[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
+
+## [[6.2.2](https://github.com/Mastermindzh/react-cookie-consent/releases/tag/6.2.2)]
+
+- Fixed the return type of getCookieConsentValue in the dts file.
+
+## [[6.2.1](https://github.com/Mastermindzh/react-cookie-consent/releases/tag/6.2.1)]
+
+Added the `getCookieConsentValue` to the dts file.
+
+## [[6.2.0](https://github.com/Mastermindzh/react-cookie-consent/releases/tag/6.2.0)]
+
+Added the exported function `getCookieConsentValue` to get the cookie value from custom code
+
+## [[6.1.0](https://github.com/Mastermindzh/react-cookie-consent/releases/tag/6.1.0)]
+
+Added support for React 17
+
+## [[6.0.0](https://github.com/Mastermindzh/react-cookie-consent/releases/tag/6.0.0)]
+
+### removed
+
+Accepting by scrolling is no longer allowed and has thus been removed from the package.
+For details see [issue 88](https://github.com/Mastermindzh/react-cookie-consent/issues/88)
+
 ## [[5.2.0](https://github.com/Mastermindzh/react-cookie-consent/releases/tag/5.2.0)]
 
 ### added

README.md

@@ -20,18 +20,21 @@ Example branch: https://github.com/Mastermindzh/react-cookie-consent/tree/exampl
 
 - [Installation](#installation)
 - [Using it](#using-it)
+  - [getting the cookies value in your own code](#getting-the-cookies-value-in-your-own-code)
 - [Props](#props)
 - [Debugging it](#debugging-it)
-- [Why are there two cookies? One of which named "Legacy"](#why-are-there-two-cookies--one-of-which-named--legacy-)
+- [Why are there two cookies? One of which named "Legacy"](#why-are-there-two-cookies-one-of-which-named-legacy)
 - [Styling it](#styling-it)
   - [Examples](#examples)
-    - [changing the bar background to red](#changing-the-bar-background-to-red)
+    - [Changing the bar background to red](#changing-the-bar-background-to-red)
-    - [changing the button font-weight to bold](#changing-the-button-font-weight-to-bold)
+    - [Changing the button font-weight to bold](#changing-the-button-font-weight-to-bold)
     - [Using predefined CSS classes](#using-predefined-css-classes)
+    - [Accept on scroll](#accept-on-scroll)
     - [Flipping the buttons](#flipping-the-buttons)
     - [Extra cookie options](#extra-cookie-options)
-    - [rainbows!](#rainbows)
+    - [Rainbows!](#rainbows)
-- [contributor information](#contributor-information)
+    - [Overlay](#overlay)
+- [Contributor information](#contributor-information)
 - [Projects using react-cookie-consent](#projects-using-react-cookie-consent)
 
 <!-- tocstop -->
@@ -84,12 +87,17 @@ 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>
 ```
@@ -105,11 +113,34 @@ If the decline button is enabled then the (onDecline) prop function can be used,
 ></CookieConsent>
 ```
 
+### getting the cookies value in your own code
+
+react-cookie-consent exports a function called `getCookieConsentValue`. You can use it in your own code like so:
+
+```js
+import CookieConsent, { Cookies, getCookieConsentValue } from "react-cookie-consent";
+
+console.log(getCookieConsentValue());
+```
+
+### reset the cookies value in your own code
+
+react-cookie-consent exports a function called `resetCookieConsentValue`. You can use it in order to remove cookie in client-site:
+
+```js
+import CookieConsent, { Cookies, resetCookieConsentValue } from "react-cookie-consent";
+
+console.log(resetCookieConsentValue());
+```
+
+That option would be interesting if you want to allow user to change their consent. If you want to show again the consent bar, you must force "visible" prop to show again the bar.
+
 ## 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.            |
+| visible                  | string, "show", "hidden" or "byCookieValue" | "byCookieValue"                      | Force the consent bar visibility. If "byCookieValue", visibility are defined by cookie consent existence.                            |
 | 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)                                         |
 | hideOnAccept             |                   boolean                   | true                                 | If disabled the component will not hide it self after the accept button has been clicked. You will need to hide yourself (see onAccept) |
@@ -143,9 +174,11 @@ If the decline button is enabled then the (onDecline) prop function can be used,
 | flipButtons              |                   boolean                   | false                                | If enabled the accept and decline buttons will be flipped                                                                               |
 | ButtonComponent          |               React component               | button                               | React Component to render as a button.                                                                                                  |
 | sameSite                 | string, "strict", "lax" or "none" | none                                 | Cookies sameSite attribute value                                                                                                        |
-| cookieSecurity       |              boolean              | undefined                            | Cookie security level. Defaults to true unless running on http.                                                                         |
+| 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
 
@@ -186,13 +219,13 @@ You can use `disableStyles={true}` to disable any built-in styling.
 
 ### Examples
 
-#### changing the bar background to red
+#### Changing the bar background to red
 
 ```js
 <CookieConsent style={{ background: "red" }}></CookieConsent>
 ```
 
-#### changing the button font-weight to bold
+#### Changing the button font-weight to bold
 
 ```js
 <CookieConsent buttonStyle={{ fontWeight: "bold" }}></CookieConsent>
@@ -219,6 +252,23 @@ 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:
@@ -241,7 +291,7 @@ You can add more cookie options using the extraCookieOptions parameter like so:
 <CookieConsent extraCookieOptions={{ domain: "myexample.com" }}>cookie bar</CookieConsent>
 ```
 
-#### rainbows!
+#### Rainbows!
 
 ![rainbows!](https://github.com/Mastermindzh/react-cookie-consent/blob/master/images/rainbow.png?raw=true)
 
@@ -287,7 +337,7 @@ You can also generate a page-obfuscating overlay that will prevent actions other
 [contentstyle]: https://github.com/Mastermindzh/react-cookie-consent/blob/master/src/index.js#L52-L55
 [overlaystyle]: https://github.com/Mastermindzh/react-cookie-consent/blob/master/src/index.js#L62-L69
 
-## contributor information
+## Contributor information
 
 When making a PR please think about the following things:
 

build/index.d.ts

@@ -12,7 +12,7 @@ export interface CookieConsentProps {
   children?: React.ReactNode;
   disableStyles?: boolean;
   hideOnAccept?: boolean;
-  onAccept?: ({ acceptedByScrolling }: { acceptedByScrolling?: boolean }) => void;
+  onAccept?: (acceptedByScrolling?: boolean) => void;
   onDecline?: Function;
   buttonText?: Function | React.ReactNode;
   declineButtonText?: Function | React.ReactNode;
@@ -29,8 +29,6 @@ export interface CookieConsentProps {
   declineButtonClasses?: string;
   buttonId?: string;
   declineButtonId?: string;
-  acceptOnScroll?: boolean;
-  acceptOnScrollPercentage?: number;
   extraCookieOptions?: object;
   disableButtonStyles?: boolean;
   enableDeclineButton?: boolean;
@@ -41,8 +39,18 @@ export interface CookieConsentProps {
   overlayStyle?: object;
   ariaAcceptLabel?: string;
   ariaDeclineLabel?: string;
+  acceptOnScroll?: boolean;
+  acceptOnScrollPercentage?: number;
 }
 
 export default class CookieConsent extends React.Component<CookieConsentProps, {}> {}
 
+/**
+ * Returns the value of the consent cookie
+ * Retrieves the regular value first and if not found the legacy one according
+ * to: https://web.dev/samesite-cookie-recipes/#handling-incompatible-clients
+ * @param {*} name optional name of the cookie
+ */
+export function getCookieConsentValue(name?: string): string;
+
 export { Cookies };

package.json

@@ -4,7 +4,7 @@
     "name": "Rick van Lieshout",
     "email": "info@rickvanlieshout.com"
   },
-  "version": "5.2.0",
+  "version": "6.3.0",
   "description": "A small, simple and customizable cookie consent bar for use in React applications.",
   "main": "build/index.js",
   "types": "build/index.d.ts",
@@ -13,7 +13,7 @@
     "prop-types": "^15.7.2"
   },
   "peerDependencies": {
-    "react": "^16.13.1"
+    "react": "^16.13.1 || ^17.0.0"
   },
   "scripts": {
     "build": "webpack",
@@ -21,7 +21,8 @@
     "patch": "npm --no-git-tag-version version patch",
     "minor": "npm --no-git-tag-version version minor",
     "major": "npm --no-git-tag-version version major",
-    "release": "npm run build && git add -A && PACKAGE_VERSION=$(cat package.json | grep version | head -1 | awk -F: '{ print $2 }' | sed 's/[\",]//g' | tr -d '[[:space:]]') && git tag $PACKAGE_VERSION && git commit -m 'release $PACKAGE_VERSION' && git push && git push --tags && npm publish",
+    "preversion": "grep \"\\[$npm_package_version\\]\" CHANGELOG.md > /dev/null || ( echo 'You need to add an entry in CHANGELOG.md for this version.' && false )",
+    "release": "npm run build && git add -A && git tag $npm_package_version && git commit -m \"release $npm_package_version\" && git push && git push --tags && npm publish",
     "release-patch": "npm run patch && npm run release",
     "release-minor": "npm run minor && npm run release",
     "release-major": "npm run major && npm run release"

src/index.d.ts

@@ -12,7 +12,7 @@ export interface CookieConsentProps {
   children?: React.ReactNode;
   disableStyles?: boolean;
   hideOnAccept?: boolean;
-  onAccept?: () => void;
+  onAccept?: (acceptedByScrolling?: boolean) => void;
   onDecline?: Function;
   buttonText?: Function | React.ReactNode;
   declineButtonText?: Function | React.ReactNode;
@@ -39,8 +39,18 @@ export interface CookieConsentProps {
   overlayStyle?: object;
   ariaAcceptLabel?: string;
   ariaDeclineLabel?: string;
+  acceptOnScroll?: boolean;
+  acceptOnScrollPercentage?: number;
 }
 
 export default class CookieConsent extends React.Component<CookieConsentProps, {}> {}
 
+/**
+ * Returns the value of the consent cookie
+ * Retrieves the regular value first and if not found the legacy one according
+ * to: https://web.dev/samesite-cookie-recipes/#handling-incompatible-clients
+ * @param {*} name optional name of the cookie
+ */
+export function getCookieConsentValue(name?: string): string;
+
 export { Cookies };

src/index.js

@@ -14,6 +14,50 @@ export const SAME_SITE_OPTIONS = {
   NONE: "none",
 };
 
+export const VISIBLE_OPTIONS = {
+  HIDDEN: 'hidden',
+  SHOW: 'show',
+  BY_COOKIE_VALUE: 'byCookieValue'
+}
+
+/**
+ * Returns the value of the consent cookie
+ * Retrieves the regular value first and if not found the legacy one according
+ * to: https://web.dev/samesite-cookie-recipes/#handling-incompatible-clients
+ * @param {*} name optional name of the cookie
+ */
+export const getCookieConsentValue = (name = defaultCookieConsentName) => {
+  let cookieValue = Cookies.get(name);
+
+  // if the cookieValue is undefined check for the legacy cookie
+  if (cookieValue === undefined) {
+    cookieValue = Cookies.get(getLegacyCookieName(name));
+  }
+  return cookieValue;
+};
+
+/**
+ * Reset the consent cookie
+ * Remove the cookie on browser in order to allow user to change their consent
+ * @param {*} name optional name of the cookie
+ */
+export const resetCookieConsentValue = (name = defaultCookieConsentName) => {
+  Cookies.remove(name);
+};
+
+/**
+ * Get the legacy cookie name by the regular cookie name
+ * @param {string} name of cookie to get
+ */
+const getLegacyCookieName = (name) => {
+  return `${name}-legacy`;
+};
+
+/**
+ * Default name of the cookie which is set by CookieConsent
+ */
+const defaultCookieConsentName = "CookieConsent";
+
 /**
  * A function to wrap elements with a "wrapper" on a condition
  * @param {object} wrappingOptions
@@ -28,7 +72,6 @@ const ConditionalWrapper = ({ condition, wrapper, children }) => {
 class CookieConsent extends Component {
   constructor(props) {
     super(props);
-    this.accept.bind(this);
 
     this.state = {
       visible: false,
@@ -88,21 +131,31 @@ 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();
     }
   }
 
@@ -110,13 +163,8 @@ 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);
@@ -129,14 +177,6 @@ class CookieConsent extends Component {
     }
   }
 
-  /**
-   * Get the legacy cookie name by the regular cookie name
-   * @param {string} name of cookie to get
-   */
-  getLegacyCookieName(name) {
-    return `${name}-legacy`;
-  }
-
   /**
    * Function to set the consent cookie based on the provided variables
    * Sets two cookies to handle incompatible browsers, more details:
@@ -154,7 +194,7 @@ class CookieConsent extends Component {
 
     // Fallback for older browsers where can not set SameSite=None, SEE: https://web.dev/samesite-cookie-recipes/#handling-incompatible-clients
     if (sameSite === SAME_SITE_OPTIONS.NONE) {
-      Cookies.set(this.getLegacyCookieName(cookieName), cookieValue, cookieOptions);
+      Cookies.set(getLegacyCookieName(cookieName), cookieValue, cookieOptions);
     }
 
     // set the regular cookie
@@ -168,21 +208,51 @@ class CookieConsent extends Component {
    */
   getCookieValue() {
     const { cookieName } = this.props;
-
+    return getCookieConsentValue(cookieName);
-    let cookieValue = Cookies.get(cookieName);
-
-    // if the cookieValue is undefined check for the legacy cookie
-    if (cookieValue === undefined) {
-      cookieValue = Cookies.get(this.getLegacyCookieName(cookieName));
   }
-    return cookieValue;
+
+  /**
+   * 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.
+    switch (this.props.visible) {
+      case VISIBLE_OPTIONS.HIDDEN:
+        return null;
+      case VISIBLE_OPTIONS.BY_COOKIE_VALUE:
         if (!this.state.visible) {
           return null;
         }
+        break;
+      default:
+        break;
+    }
 
     const {
       location,
@@ -281,7 +351,9 @@ class CookieConsent extends Component {
         className={buttonClasses}
         id={buttonId}
         aria-label={ariaAcceptLabel}
-        onClick={this.accept}
+        onClick={() => {
+          this.accept();
+        }}
       >
         {buttonText}
       </ButtonComponent>
@@ -317,6 +389,7 @@ class CookieConsent extends Component {
 
 CookieConsent.propTypes = {
   location: PropTypes.oneOf(Object.keys(OPTIONS).map((key) => OPTIONS[key])),
+  visible: PropTypes.oneOf(Object.keys(VISIBLE_OPTIONS).map((key) => VISIBLE_OPTIONS[key])),
   sameSite: PropTypes.oneOf(Object.keys(SAME_SITE_OPTIONS).map((key) => SAME_SITE_OPTIONS[key])),
   style: PropTypes.object,
   buttonStyle: PropTypes.object,
@@ -354,6 +427,8 @@ CookieConsent.propTypes = {
   overlayStyle: PropTypes.object,
   ariaAcceptLabel: PropTypes.string,
   ariaDeclineLabel: PropTypes.string,
+  acceptOnScroll: PropTypes.bool,
+  acceptOnScrollPercentage: PropTypes.number,
 };
 
 CookieConsent.defaultProps = {
@@ -361,9 +436,10 @@ CookieConsent.defaultProps = {
   hideOnAccept: true,
   hideOnDecline: true,
   location: OPTIONS.BOTTOM,
+  visible: VISIBLE_OPTIONS.BY_COOKIE_VALUE,
   onAccept: () => {},
   onDecline: () => {},
-  cookieName: "CookieConsent",
+  cookieName: defaultCookieConsentName,
   cookieValue: true,
   declineCookieValue: false,
   setDeclineCookie: true,
@@ -388,6 +464,8 @@ CookieConsent.defaultProps = {
   overlayClasses: "",
   ariaAcceptLabel: "Accept cookies",
   ariaDeclineLabel: "Decline cookies",
+  acceptOnScroll: false,
+  acceptOnScrollPercentage: 25,
 };
 
 export default CookieConsent;

webpack.config.js

@@ -7,6 +7,9 @@ module.exports = {
     path: path.resolve(__dirname, "build"),
     filename: "index.js",
     libraryTarget: "commonjs2", // THIS IS THE MOST IMPORTANT LINE! :mindblow: I wasted more than 2 days until realize this was the line most important in all this guide.
+    environment: {
+      arrowFunction: false, // the generated runtime-code should not use arrow functions
+    },
   },
   module: {
     rules: [