webview的back和forward事件处理

Love Browser/Views/ContentView.swift

@@ -14,10 +14,7 @@ struct ContentView: View {
 
     @State private var text = ""
     @State private var isSearch = false
-    @State private var canBack = false
-    @State private var canForward = false
-    @State private var showHome = false
-    @State private var backgroundImage = ""
+    @State private var backgroundImage = "default"
 
 
     @Environment(\.managedObjectContext) private var viewContext
@@ -56,52 +53,23 @@ struct ContentView: View {
 
                 if isSearch {
 
-                    HomeWebView(text: $text)
+                    HomeWebView(text: $text, isSearch: $isSearch, backgroundImage: $backgroundImage)
 
                 } else {
 
-                    HomePageView() { query in
+                    HomePageView(backgroundImage: $backgroundImage) {  query in
                         // 跳转到网页
                         text = query
                         isSearch = true
-                        showHome = true
                     }
 
                     .background(
                         Image(backgroundImage)
                                     .resizable()
                                     .aspectRatio(contentMode: .fill)
                     )
-                    .padding(.top,10)
                 }
-
-                BottomBar(clickHomeButton: {
-
-                    isSearch = false
-                    showHome = false
-
-                }, clickBackButton: {
-
-
-                }, clickForwardButton: {
-
-                }, changeWallpaper: { str in
-
-                    // 切换壁纸
-                    backgroundImage = str
-
-                }, openTabsView: {
-                    // open tabs View
-
-                    preparePreview { image in
-
-//                        UIImageWriteToSavedPhotosAlbum(image!, nil, nil, nil)
-
-//                        let model = TabsModel(title: "", image: image ?? UIImage())
-//                        TabManager(model: model)
-                    }
-
-                }, canBack: $canBack, canForward: $canForward, showHome: $showHome)
+
             }
 
             .navigationBarHidden(true)

Love Browser/Views/HomePageView.swift

@@ -8,6 +8,12 @@
 import SwiftUI
 
 struct HomePageView: View {
+
+    @State private var canBack = false
+    @State private var canForward = false
+    @State private var showHome = false
+
+    @Binding var backgroundImage: String
 
     @FetchRequest(fetchRequest: HomePageCategory.all) private var  homePgaeCategorys:FetchedResults<HomePageCategory>
 
@@ -73,16 +79,40 @@ struct HomePageView: View {
                     }
                 }
             }
+            .padding(.top, 20)
+
+            BottomBar(clickHomeButton: {
+
+                showHome = false
+
+            }, clickBackButton: {
+
+
+            }, clickForwardButton: {
+
+            }, changeWallpaper: { str in
+
+                // 切换壁纸
+                backgroundImage = str
+
+            }, openTabsView: {
+                // open tabs View
+
+
+            }, canBack: $canBack, canForward: $canForward, showHome: $showHome)
 
         }
 
     }
 }
 
 struct HomePageView_Previews: PreviewProvider {
+
+    @State static var backgroundImage = "bg1"
+
     static var previews: some View {
 
-        HomePageView { query in
+        HomePageView(backgroundImage: $backgroundImage) { query in
 
         }
     }

Love Browser/Views/HomeWebView.swift

@@ -10,6 +10,13 @@ import SwiftUI
 struct HomeWebView: View {
 
     @Binding var text: String
+    @Binding var isSearch: Bool
+    @Binding var backgroundImage: String
+
+    @State private var canBack = false
+    @State private var canForward = false
+    @State private var showHome = true
+
 
     @ObservedObject var webViewModel = WebViewModel()
 
@@ -56,9 +63,33 @@ struct HomeWebView: View {
                 formatter1.dateStyle = .short
                 saveSearchHistoryCategory(date:formatter1.string(from: Date.now), title: title, url: url)
 
-
+                canBack =  webViewModel.webViewCanGoBack()
+                canForward = webViewModel.webViewCanGoForward()
             }
 
+            BottomBar(clickHomeButton: {
+
+                isSearch = false
+
+            }, clickBackButton: {
+
+                webViewModel.webView.goBack()
+
+            }, clickForwardButton: {
+
+                webViewModel.webView.goForward()
+
+            }, changeWallpaper: { str in
+
+                // 切换壁纸
+                backgroundImage = str
+
+            }, openTabsView: {
+                // open tabs View
+
+
+            }, canBack: $canBack, canForward: $canForward, showHome: $showHome)
+
         }
 
     }

Love Browser/Views/MenuView.swift

@@ -65,6 +65,7 @@ struct MenuView: View {
                 .padding(.top,24)
 
             }
+            .background(Color.white)
             .edgesIgnoringSafeArea([.bottom])
             .frame(height: 267)
         }

Love Browser/Views/WebSearchView.swift

@@ -110,7 +110,6 @@ struct WebSearchView: View {
                 .padding(.top, -8)
 
         }
-
 
     }
 

Love Browser/Views/WebView.swift

@@ -60,10 +60,14 @@ class WebViewModel: ObservableObject {
         }
     }
 
+    func webViewCanGoBack() -> Bool {
+        return webView.canGoBack
+
+    }
 
-    func fetchDataFromWebView() -> WKBackForwardList {
+    func webViewCanGoForward() -> Bool {
 
-       return webView.backForwardList
+        return webView.canGoForward
     }
 
 }
@@ -110,6 +114,14 @@ class WebViewCoordinator: NSObject,WKNavigationDelegate {
     }
 
     func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
+
+    }
+
+    func webView(_ webView: WKWebView, didFailProvisionalNavigation navigation: WKNavigation!, withError error: Error) {
+
+    }
+
+    func webView(_ webView: WKWebView, didCommit navigation: WKNavigation!) {
 
     }