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PostList.swift
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PostList.swift
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import SwiftUI
struct PostList: View {
@EnvironmentObject var postStore: PostStore
@State var selectedCollection: PostCollection
@State var isPresentingSettings = false
var body: some View {
#if os(iOS)
GeometryReader { geometry in
List {
ForEach(showPosts(for: selectedCollection)) { post in
NavigationLink(
destination: PostEditor(post: post)
) {
PostCell(
post: post
)
}
}
}
.navigationTitle(selectedCollection.title)
.toolbar {
ToolbarItem(placement: .primaryAction) {
Button(action: {
let post = Post()
postStore.add(post)
}, label: {
Image(systemName: "square.and.pencil")
})
}
ToolbarItem(placement: .bottomBar) {
HStack {
Button(action: {
isPresentingSettings = true
}, label: {
Image(systemName: "gear")
}).sheet(
isPresented: $isPresentingSettings,
onDismiss: {
isPresentingSettings = false
},
content: {
SettingsView(isPresented: $isPresentingSettings)
}
)
Spacer()
Text(pluralizedPostCount(for: showPosts(for: selectedCollection)))
.foregroundColor(.secondary)
}
.padding()
.frame(width: geometry.size.width)
}
}
}
#else //if os(macOS)
List {
ForEach(showPosts(for: selectedCollection)) { post in
NavigationLink(
destination: PostEditor(post: post)
) {
PostCell(
post: post
)
}
}
}
.navigationTitle(selectedCollection.title)
.navigationSubtitle(pluralizedPostCount(for: showPosts(for: selectedCollection)))
.toolbar {
Button(action: {
let post = Post()
postStore.add(post)
}, label: {
Image(systemName: "square.and.pencil")
})
}
#endif
}
private func pluralizedPostCount(for posts: [Post]) -> String {
if posts.count == 1 {
return "1 post"
} else {
return "\(posts.count) posts"
}
}
private func showPosts(for collection: PostCollection) -> [Post] {
if collection == allPostsCollection {
return postStore.posts
} else {
return postStore.posts.filter {
$0.collection.title == collection.title
}
}
}
}
struct PostList_Previews: PreviewProvider {
static var previews: some View {
Group {
PostList(selectedCollection: allPostsCollection)
.environmentObject(testPostStore)
}
}
}

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