added WebHistory and WebHistoryItem class, added getCopyBackForwardList, goBackOrForward, canGoBackOrForward and goTo methods for InAppWebView and InAppBrowser, updated docs

.idea/workspace.xml

@@ -17,16 +17,15 @@
     <list default="true" id="9b41f7a2-a71e-4923-91fb-249d7815b3e7" name="Default" comment="">
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/CHANGELOG.md" beforeDir="false" afterPath="$PROJECT_DIR$/CHANGELOG.md" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/README.md" beforeDir="false" afterPath="$PROJECT_DIR$/README.md" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/FlutterWebView.java" beforeDir="false" afterPath="$PROJECT_DIR$/android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/FlutterWebView.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/InAppBrowserActivity.java" beforeDir="false" afterPath="$PROJECT_DIR$/android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/InAppBrowserActivity.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/InAppBrowserFlutterPlugin.java" beforeDir="false" afterPath="$PROJECT_DIR$/android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/InAppBrowserFlutterPlugin.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/InAppWebView/InAppWebView.java" beforeDir="false" afterPath="$PROJECT_DIR$/android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/InAppWebView/InAppWebView.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/example/lib/main.dart" beforeDir="false" afterPath="$PROJECT_DIR$/example/lib/main.dart" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/ios/Classes/InAppBrowserWebViewController.swift" beforeDir="false" afterPath="$PROJECT_DIR$/ios/Classes/InAppBrowserWebViewController.swift" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/ios/Classes/InAppWebView.swift" beforeDir="false" afterPath="$PROJECT_DIR$/ios/Classes/InAppWebView.swift" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/ios/Classes/SwiftFlutterPlugin.swift" beforeDir="false" afterPath="$PROJECT_DIR$/ios/Classes/SwiftFlutterPlugin.swift" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/lib/flutter_inappbrowser.dart" beforeDir="false" afterPath="$PROJECT_DIR$/lib/flutter_inappbrowser.dart" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pubspec.yaml" beforeDir="false" afterPath="$PROJECT_DIR$/pubspec.yaml" afterDir="false" />
     </list>
     <ignored path="$PROJECT_DIR$/.dart_tool/" />
     <ignored path="$PROJECT_DIR$/.idea/" />
@@ -46,8 +45,8 @@
       <file leaf-file-name="flutter_inappbrowser.dart" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/lib/flutter_inappbrowser.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="561">
+            <state relative-caret-position="337">
-              <caret line="1037" column="43" selection-start-line="1037" selection-start-column="21" selection-end-line="1037" selection-end-column="43" />
+              <caret line="1101" column="17" selection-start-line="1101" selection-start-column="17" selection-end-line="1101" selection-end-column="17" />
               <folding>
                 <element signature="e#814#831#0" expanded="true" />
               </folding>
@@ -58,8 +57,8 @@
       <file leaf-file-name="README.md" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/README.md">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="351">
+            <state relative-caret-position="-534">
-              <caret line="48" column="126" selection-start-line="48" selection-start-column="126" selection-end-line="48" selection-end-column="126" />
+              <caret line="16" column="3" selection-start-line="16" selection-start-column="3" selection-end-line="16" selection-end-column="3" />
               <folding>
                 <element signature="e#0#20#0" expanded="true" />
                 <element signature="e#0#39#0" expanded="true" />
@@ -72,8 +71,8 @@
       <file leaf-file-name="main.dart" pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/example/lib/main.dart">
           <provider selected="true" editor-type-id="text-editor">
-            <state>
+            <state relative-caret-position="449">
-              <caret line="234" selection-start-line="234" selection-end-line="234" />
+              <caret line="30" lean-forward="true" selection-start-line="30" selection-end-line="30" />
               <folding>
                 <element signature="e#0#20#0" expanded="true" />
               </folding>
@@ -84,8 +83,8 @@
       <file leaf-file-name="CHANGELOG.md" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/CHANGELOG.md">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="90">
+            <state relative-caret-position="120">
-              <caret line="6" selection-start-line="6" selection-end-line="6" />
+              <caret line="8" lean-forward="true" selection-start-line="8" selection-end-line="8" />
             </state>
           </provider>
         </entry>
@@ -173,9 +172,9 @@
         <option value="$PROJECT_DIR$/example/ios/Flutter/Generated.xcconfig" />
         <option value="$PROJECT_DIR$/example/pubspec.yaml" />
         <option value="$PROJECT_DIR$/pubspec.yaml" />
-        <option value="$PROJECT_DIR$/lib/flutter_inappbrowser.dart" />
-        <option value="$PROJECT_DIR$/CHANGELOG.md" />
         <option value="$PROJECT_DIR$/README.md" />
+        <option value="$PROJECT_DIR$/CHANGELOG.md" />
+        <option value="$PROJECT_DIR$/lib/flutter_inappbrowser.dart" />
         <option value="$PROJECT_DIR$/example/lib/main.dart" />
       </list>
     </option>
@@ -383,16 +382,16 @@
     <layout>
       <window_info anchor="bottom" id="Android Profiler" order="7" show_stripe_button="false" />
       <window_info anchor="bottom" id="TODO" order="6" />
-      <window_info active="true" anchor="bottom" id="Messages" order="12" visible="true" weight="0.23594266" />
+      <window_info anchor="bottom" id="Messages" order="12" weight="0.23594266" />
       <window_info anchor="right" id="Palette&#9;" order="9" />
       <window_info id="Image Layers" order="7" />
       <window_info id="Build Variants" order="3" side_tool="true" />
       <window_info anchor="right" id="Capture Analysis" order="4" />
-      <window_info anchor="bottom" id="Event Log" order="8" sideWeight="0.5043937" side_tool="true" weight="0.30650496" />
+      <window_info anchor="bottom" id="Event Log" order="8" sideWeight="0.5052169" side_tool="true" weight="0.34068358" />
       <window_info anchor="bottom" id="Dart Analysis" order="14" weight="0.3276414" />
-      <window_info anchor="bottom" id="Run" order="2" sideWeight="0.49644473" weight="0.34068358" />
+      <window_info anchor="bottom" id="Run" order="2" sideWeight="0.49478307" weight="0.34068358" />
       <window_info anchor="bottom" id="Version Control" order="9" />
-      <window_info anchor="bottom" id="Terminal" order="10" sideWeight="0.49560633" weight="0.20066153" />
+      <window_info active="true" anchor="bottom" id="Terminal" order="10" sideWeight="0.49533224" visible="true" weight="0.20066153" />
       <window_info anchor="right" id="Flutter Outline" order="6" weight="0.32922077" />
       <window_info anchor="bottom" id="Logcat" order="11" />
       <window_info id="Captures" order="4" weight="0.32936507" />
@@ -658,25 +657,6 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/CHANGELOG.md">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="90">
-          <caret line="6" selection-start-line="6" selection-end-line="6" />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/README.md">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="351">
-          <caret line="48" column="126" selection-start-line="48" selection-start-column="126" selection-end-line="48" selection-end-column="126" />
-          <folding>
-            <element signature="e#0#20#0" expanded="true" />
-            <element signature="e#0#39#0" expanded="true" />
-            <element signature="e#0#39#0" expanded="true" />
-          </folding>
-        </state>
-      </provider>
-    </entry>
     <entry file="file://$PROJECT_DIR$/pubspec.yaml">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="75">
@@ -686,18 +666,37 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/lib/flutter_inappbrowser.dart">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="561">
+        <state relative-caret-position="337">
-          <caret line="1037" column="43" selection-start-line="1037" selection-start-column="21" selection-end-line="1037" selection-end-column="43" />
+          <caret line="1101" column="17" selection-start-line="1101" selection-start-column="17" selection-end-line="1101" selection-end-column="17" />
           <folding>
             <element signature="e#814#831#0" expanded="true" />
           </folding>
         </state>
       </provider>
     </entry>
+    <entry file="file://$PROJECT_DIR$/README.md">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="-534">
+          <caret line="16" column="3" selection-start-line="16" selection-start-column="3" selection-end-line="16" selection-end-column="3" />
+          <folding>
+            <element signature="e#0#20#0" expanded="true" />
+            <element signature="e#0#39#0" expanded="true" />
+            <element signature="e#0#39#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/CHANGELOG.md">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="120">
+          <caret line="8" lean-forward="true" selection-start-line="8" selection-end-line="8" />
+        </state>
+      </provider>
+    </entry>
     <entry file="file://$PROJECT_DIR$/example/lib/main.dart">
       <provider selected="true" editor-type-id="text-editor">
-        <state>
+        <state relative-caret-position="449">
-          <caret line="234" selection-start-line="234" selection-end-line="234" />
+          <caret line="30" lean-forward="true" selection-start-line="30" selection-end-line="30" />
           <folding>
             <element signature="e#0#20#0" expanded="true" />
           </folding>

CHANGELOG.md

@@ -1,7 +1,7 @@
 ## 0.5.4
 
 - added `WebHistory` and `WebHistoryItem` class
-- added `getCopyBackForwardList` method for `InAppWebView` and `InAppBrowser`
+- added `getCopyBackForwardList`, `goBackOrForward`, `canGoBackOrForward` and `goTo` methods for `InAppWebView` and `InAppBrowser`
 
 ## 0.5.3
 

android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/FlutterWebView.java

@@ -162,6 +162,14 @@ public class FlutterWebView implements PlatformView, MethodCallHandler  {
       case "canGoForward":
         result.success((webView != null) && webView.canGoForward());
         break;
+      case "goBackOrForward":
+        if (webView != null)
+          webView.goBackOrForward((Integer) call.argument("steps"));
+        result.success(true);
+        break;
+      case "canGoBackOrForward":
+        result.success((webView != null) && webView.canGoBackOrForward((Integer) call.argument("steps")));
+        break;
       case "stopLoading":
         if (webView != null)
           webView.stopLoading();

android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/InAppBrowserActivity.java

@@ -238,17 +238,32 @@ public class InAppBrowserActivity extends AppCompatActivity {
       webView.goBack();
   }
 
+  public boolean canGoBack() {
+    if (webView != null)
+      return webView.canGoBack();
+    return false;
+  }
+
   public void goForward() {
     if (webView != null && canGoForward())
       webView.goForward();
   }
 
-  public boolean canGoBack() {
+  public boolean canGoForward() {
-    return webView.canGoBack();
+    if (webView != null)
+      return webView.canGoForward();
+    return false;
   }
 
-  public boolean canGoForward() {
+  public void goBackOrForward(int steps) {
-    return webView.canGoForward();
+    if (webView != null && canGoBackOrForward(steps))
+      webView.goBackOrForward(steps);
+  }
+
+  public boolean canGoBackOrForward(int steps) {
+    if (webView != null)
+      return webView.canGoBackOrForward(steps);
+    return false;
   }
 
   public void hide() {

android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/InAppBrowserFlutterPlugin.java

@@ -233,6 +233,13 @@ public class InAppBrowserFlutterPlugin implements MethodCallHandler {
       case "canGoForward":
         result.success(canGoForward(uuid));
         break;
+      case "goBackOrForward":
+        goBackOrForward(uuid, (Integer) call.argument("steps"));
+        result.success(true);
+        break;
+      case "canGoBackOrForward":
+        result.success(canGoBackOrForward(uuid, (Integer) call.argument("steps")));
+        break;
       case "stopLoading":
         stopLoading(uuid);
         result.success(true);
@@ -497,6 +504,18 @@ public class InAppBrowserFlutterPlugin implements MethodCallHandler {
     return false;
   }
 
+  public void goBackOrForward(String uuid, int steps) {
+    InAppBrowserActivity inAppBrowserActivity = webViewActivities.get(uuid);
+    if (inAppBrowserActivity != null)
+      inAppBrowserActivity.goBackOrForward(steps);
+  }
+
+  public boolean canGoBackOrForward(String uuid, int steps) {
+    InAppBrowserActivity inAppBrowserActivity = webViewActivities.get(uuid);
+    if (inAppBrowserActivity != null)
+      return inAppBrowserActivity.canGoBackOrForward(steps);
+    return false;
+  }
 
   public static void close(final String uuid, final Result result) {
     final InAppBrowserActivity inAppBrowserActivity = webViewActivities.get(uuid);

android/src/main/java/com/pichillilorenzo/flutter_inappbrowser/InAppWebView/InAppWebView.java

@@ -97,6 +97,12 @@ public class InAppWebView extends WebView {
     this.options = options;
   }
 
+  @Override
+  public void reload() {
+    super.reload();
+    Log.d(LOG_TAG, "RELOAD");
+  }
+
   public void prepare() {
 
     boolean isFromInAppBrowserActivity = inAppBrowserActivity != null;

example/lib/main.dart

@@ -16,12 +16,21 @@ class MyInAppBrowser extends InAppBrowser {
   Future onLoadStop(String url) async {
     print("\n\nStopped $url\n\n");
 
-    WebHistory history = await this.webViewController.getCopyBackForwardList();
+//    WebHistory history = await this.webViewController.getCopyBackForwardList();
-    print(history.list.length);
+//    print(history.list.length);
-    print(history.list[history.currentIndex].url);
+//    print(history.currentIndex);
-    for(WebHistoryItem item in history.list) {
+//    print(history.list[history.currentIndex].url);
-      print(item.title);
+//    for(WebHistoryItem item in history.list) {
-    }
+//      print(item.title);
+//    }
+//
+//    print(await this.webViewController.canGoBackOrForward(1));
+//    if (await this.webViewController.canGoBackOrForward(-2)) {
+//      this.webViewController.goTo(history.list[0]);
+//    }
+
+//    await this.webViewController.goBackOrForward(-1);
+
 //    print(await this.webViewController.canGoBack());
 //    print(await this.webViewController.canGoForward());
 

ios/Classes/InAppBrowserWebViewController.swift

@@ -481,13 +481,20 @@ class InAppBrowserWebViewController: UIViewController, WKUIDelegate, WKNavigatio
         })
     }
     
+    @objc func goBack() {
+        if canGoBack() {
+            webView.goBack()
+            updateUrlTextField(url: (webView?.url?.absoluteString)!)
+        }
+    }
+    
     func canGoBack() -> Bool {
         return webView.canGoBack
     }
     
-    @objc func goBack() {
+    @objc func goForward() {
-        if canGoBack() {
+        if canGoForward() {
-            webView.goBack()
+            webView.goForward()
             updateUrlTextField(url: (webView?.url?.absoluteString)!)
         }
     }
@@ -496,11 +503,13 @@ class InAppBrowserWebViewController: UIViewController, WKUIDelegate, WKNavigatio
         return webView.canGoForward
     }
     
-    @objc func goForward() {
+    @objc func goBackOrForward(steps: Int) {
-        if canGoForward() {
+        webView.goBackOrForward(steps: steps)
-            webView.goForward()
+        updateUrlTextField(url: (webView?.url?.absoluteString)!)
-            updateUrlTextField(url: (webView?.url?.absoluteString)!)
+    }
-        }
+    
+    func canGoBackOrForward(steps: Int) -> Bool {
+        return webView.canGoBackOrForward(steps: steps)
     }
     
     func updateUrlTextField(url: String) {

ios/Classes/InAppWebView.swift

@@ -10,4 +10,25 @@ import WebKit
 
 public class InAppWebView: WKWebView {
     
+    public func goBackOrForward(steps: Int) {
+        if canGoBackOrForward(steps: steps) {
+            if (steps > 0) {
+                let index = steps - 1
+                go(to: self.backForwardList.forwardList[index])
+            }
+            else if (steps < 0){
+                let backListLength = self.backForwardList.backList.count
+                let index = backListLength + steps
+                go(to: self.backForwardList.backList[index])
+            }
+        }
+    }
+    
+    public func canGoBackOrForward(steps: Int) -> Bool {
+        let currentIndex = self.backForwardList.backList.count
+        return (steps >= 0)
+            ? steps <= self.backForwardList.forwardList.count
+            : currentIndex + steps >= 0
+    }
+    
 }

ios/Classes/SwiftFlutterPlugin.swift

@@ -129,6 +129,22 @@ public class SwiftFlutterPlugin: NSObject, FlutterPlugin {
                     result(false)
                 }
                 break
+            case "goBackOrForward":
+                if let webViewController = self.webViewControllers[uuid] {
+                    let steps = arguments!["steps"] as! Int
+                    webViewController?.goBackOrForward(steps: steps)
+                }
+                result(true)
+                break
+            case "canGoBackOrForward":
+                if let webViewController = self.webViewControllers[uuid] {
+                    let steps = arguments!["steps"] as! Int
+                    result(webViewController?.canGoBackOrForward(steps: steps) ?? false)
+                }
+                else {
+                    result(false)
+                }
+                break
             case "isLoading":
                 if let webViewController = self.webViewControllers[uuid] {
                     result((webViewController?.webView.isLoading ?? false) == true)

lib/flutter_inappbrowser.dart

@@ -903,6 +903,37 @@ class InAppWebViewController {
     return await _channel.invokeMethod('canGoForward', args);
   }
 
+  ///Goes to the history item that is the number of steps away from the current item. Steps is negative if backward and positive if forward.
+  Future<void> goBackOrForward(int steps) async {
+    assert(steps != null);
+
+    Map<String, dynamic> args = <String, dynamic>{};
+    if (_inAppBrowserUuid != null) {
+      _inAppBrowser._throwIsNotOpened();
+      args.putIfAbsent('uuid', () => _inAppBrowserUuid);
+    }
+    args.putIfAbsent('steps', () => steps);
+    await _channel.invokeMethod('goBackOrForward', args);
+  }
+
+  ///Gets whether the page can go back or forward the given number of steps.
+  Future<bool> canGoBackOrForward(int steps) async {
+    assert(steps != null);
+
+    Map<String, dynamic> args = <String, dynamic>{};
+    if (_inAppBrowserUuid != null) {
+      _inAppBrowser._throwIsNotOpened();
+      args.putIfAbsent('uuid', () => _inAppBrowserUuid);
+    }
+    args.putIfAbsent('steps', () => steps);
+    return await _channel.invokeMethod('canGoBackOrForward', args);
+  }
+
+  ///Navigates to an item from the back-forward list and sets it as the current item.
+  Future<void> goTo(WebHistoryItem historyItem) async {
+    await goBackOrForward(historyItem.offset);
+  }
+
   ///Check if the Web View of the [InAppWebView] instance is in a loading state.
   Future<bool> isLoading() async {
     Map<String, dynamic> args = <String, dynamic>{};
@@ -1050,8 +1081,9 @@ class InAppWebViewController {
     int currentIndex = result["currentIndex"];
 
     List<WebHistoryItem> historyList = List();
-    for(LinkedHashMap<dynamic, dynamic> historyItem in historyListMap) {
+    for(var i = 0; i < historyListMap.length; i++) {
-      historyList.add(WebHistoryItem(historyItem["originalUrl"], historyItem["title"], historyItem["url"]));
+      LinkedHashMap<dynamic, dynamic> historyItem = historyListMap[i];
+      historyList.add(WebHistoryItem(historyItem["originalUrl"], historyItem["title"], historyItem["url"], i, i - currentIndex));
     }
     return WebHistory(historyList, currentIndex);
   }
@@ -1067,7 +1099,9 @@ class InAppWebViewController {
 ///This class contains a snapshot of the current back/forward list for a WebView.
 class WebHistory {
   List<WebHistoryItem> _list;
+  ///List of all [WebHistoryItem]s.
   List<WebHistoryItem> get list => _list;
+  ///Index of the current [WebHistoryItem].
   int currentIndex;
 
   WebHistory(this._list, this.currentIndex);
@@ -1077,11 +1111,18 @@ class WebHistory {
 ///
 ///A convenience class for accessing fields in an entry in the back/forward list of a WebView. Each WebHistoryItem is a snapshot of the requested history item.
 class WebHistoryItem {
+  ///Original url of this history item.
   String originalUrl;
+  ///Document title of this history item.
   String title;
+  ///Url of this history item.
   String url;
+  ///0-based position index in the back-forward [WebHistory.list].
+  int index;
+  ///Position offset respect to the currentIndex of the back-forward [WebHistory.list].
+  int offset;
 
-  WebHistoryItem(this.originalUrl, this.title, this.url);
+  WebHistoryItem(this.originalUrl, this.title, this.url, this.index, this.offset);
 }
 
 ///InAppLocalhostServer class.