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52 lines
1.9 KiB
Markdown
52 lines
1.9 KiB
Markdown
# Widgets on iOS
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There are _currently_ seven widgets available for iOS:
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- 1x small widget that displays the current count of each of the Smart Feeds
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- 3x medium widgets—one for each of the smart feeds.
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- 3x large widgets—bigger versions of the medium widgets
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## Widget Data
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The widget does not have access to the parent app's database. To surface data to the widget, a small amount of article data is encoded to JSON (see `WidgetDataEncoder`) and saved to the AppGroup container.
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Widget data is written at two points:
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1. As part of a background refresh
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2. When the scene enters the background
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The widget timeline is refreshed—via `WidgetCenter.shared.reloadAllTimelines()`—after each of the above.
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## Deep Links
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The medium widgets support deep links for each of the articles that are surfaced.
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If the user taps on an unread article in the unread widget, the widget opens the parent app with a deep link URL (see `WidgetDeepLink`), for example: `nnw://showunread?id={articeID}`. Once the app is opened, `scene(_ scene: UIScene, openURLContexts URLContexts: Set<UIOpenURLContext>)` is called and it is then determined what should be presented to the user based on the URL. If there is no `id` parameter—the user has tapped on a small widget or a non-linked item in a medium widget—the relevant smart feed controller is displayed.
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## Data Models
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```swift
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struct WidgetData: Codable {
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let currentUnreadCount: Int
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let currentTodayCount: Int
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let currentStarredCount: Int
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let unreadArticles: [LatestArticle]
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let starredArticles: [LatestArticle]
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let todayArticles: [LatestArticle]
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let lastUpdateTime: Date
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}
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struct LatestArticle: Codable, Identifiable {
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var id: String // articleID
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let feedTitle: String
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let articleTitle: String?
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let articleSummary: String?
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let feedIcon: Data? // Base64 encoded image
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let pubDate: String
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}
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```
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