Add Legend button under advanced search

Toki Trainer/Views/WordListViews/DictionaryView.swift

@@ -17,6 +17,7 @@ struct DictionaryView: View {
     
     @State private var tokiInput: String = ""
     @State private var selectedPartOfSpeech: String?
+    @State private var showGenericLegend: Bool = false
     @State private var advancedSearchEnabled = false
     @State var searchMode: SearchMode = .Dictionary
     
@@ -68,6 +69,13 @@ struct DictionaryView: View {
                         }
                         filterByInput()
                     }
+                    Button(action: {
+                        print("Legend")
+                        showGenericLegend.toggle()
+                    }, label: {
+                        Text("Legend")
+                    })
+                    .padding(4)
                 }
                 .padding([.leading, .trailing], 8)
             }
@@ -77,6 +85,9 @@ struct DictionaryView: View {
             .sheet(item: $selectedPartOfSpeech) { selectedPOS in
                 PartsOfSpeechView(selectedPartOfSpeech: selectedPOS)
             }
+            .sheet(isPresented: $showGenericLegend, content: {
+                PartsOfSpeechView(selectedPartOfSpeech: nil)
+            })
             .onChange(of: tokiInput) { newValue in
                 filterByInput()
                 //tokiDictViewModel.filterDictionaryEnglishMode(newValue)