From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 19:32:43 +0200
Subject: Adding upstream version 1:115.7.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+# PageDataService
+
+The page data service is responsible for collecting additional data about a page. This could include
+information about the media on a page, product information, etc. When enabled it will automatically
+try to find page data for pages that the user browses or it can be directed to asynchronously look
+up the page data for a url.
+
+The `PageDataService` is an EventEmitter and listeners can subscribe to its notifications via the
+`on` and `once` methods.
+
+The service can be enabled by setting `browser.pagedata.enabled` to true. Additional logging can be
+enabled by setting `browser.pagedata.log` to true.
+
+## PageData Data Structure
+
+At a high level the page data service can collect many different kinds of data. When queried the
+service will respond with a `PageData` structure which holds some general information about the
+page, the time when the data was discovered and a map of the different types of data found. This map
+will be empty if no specific data was found. The key of the map is from the
+`PageDataSchema.DATA_TYPE` enumeration. The value is the JSON data which differs in structure
+depending on the data type.
+
+```
+{
+  "url": <url of the page as a string>,
+  "date": <epoch based timestamp>,
+  "siteName": <a friendly name for the website>,
+  "image": <url for an image for the page as a string>,
+  "data": <map of data types>,
+}
+```
+
+## PageData Collection
+
+Page data is gathered in one of two ways.
+
+Page data is automatically gathered for webpages the user visits. This collection is trigged after
+a short delay and then updated when necessary. Any data is cached in memory for a period of time.
+When page data has been found a `page-data` event is emitted. The event's argument holds the
+`PageData` structure. The `getCached` function can be used to access any cached data for a url.
+
+## Supported Types of page data
+
+The following types of page data (`PageDataSchema.DATA_TYPE`) are currently supported:
+
+- `PRODUCT`
+- `DOCUMENT`
+- `ARTICLE`
+- `AUDIO`
+- `VIDEO`
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