Fix label editing view

CHDataManagement/Model/LocalizedPage.swift

@@ -61,6 +61,14 @@ final class LocalizedPage: ChangeObservingItem {
         content.isValidIdForTagOrPageOrPost(urlComponent) &&
         !content.containsPage(withUrlComponent: urlComponent)
     }
+
+    func update(hasContent: Bool) -> Bool {
+        if self.hasContent != hasContent {
+            self.hasContent = hasContent
+            return true
+        }
+        return false
+    }
 }
 
 

CHDataManagement/Model/Page.swift

@@ -153,7 +153,9 @@ final class Page: Item, DateItem, LocalizedItem {
         guard content.storage.remove(pageContent: id, in: language) else {
             return false
         }
-        localized(in: language).hasContent = false
+        if localized(in: language).update(hasContent: false) {
+            self.didChange()
+        }
         return true
     }
 
@@ -161,7 +163,9 @@ final class Page: Item, DateItem, LocalizedItem {
         guard content.storage.save(pageContent: pageContent, for: id, in: language) else {
             return false
         }
-        localized(in: language).hasContent = true
+        if localized(in: language).update(hasContent: true) {
+            self.didChange()
+        }
         return true
     }
 
@@ -169,8 +173,15 @@ final class Page: Item, DateItem, LocalizedItem {
      Update the `hasContent` property of all localized pages.
      */
     func updateContentExistence() {
+        var didUpdate = false
         for language in ContentLanguage.allCases {
-            localized(in: language).hasContent = content.storage.hasPageContent(for: id, language: language)
+            let hasContent = content.storage.hasPageContent(for: id, language: language)
+            if localized(in: language).update(hasContent: hasContent) {
+                didUpdate = true
+            }
+        }
+        if didUpdate {
+            self.didChange()
         }
     }
 

CHDataManagement/Views/Pages/Commands/LabelCreationView.swift

@@ -10,7 +10,7 @@ struct LabelCreationView: View {
 
     var body: some View {
         List {
-            ForEach($labels) { label in
+            ForEach($labels, id: \.icon) { label in
                 HStack {
                     Button(action: { remove(label.wrappedValue) }) {
                         Image(systemSymbol: .minusCircleFill)
@@ -32,13 +32,13 @@ struct LabelCreationView: View {
     }
 
     private func addLabel() {
-        var label = ContentLabel(icon: .statisticsTime, value: "Value")
-        var number = 0
-        while labels.contains(label) {
-            number += 1
-            label.value = "Value \(number)"
+        for icon in PageIcon.allCases {
+            if labels.contains(where: { $0.icon == icon }) {
+                continue
+            }
+            labels.append(.init(icon: icon, value: "Value"))
+            return
         }
-        labels.append(label)
     }
 
     private func remove(_ label: ContentLabel) {