TF-3601 Fix preview EML file with long content in iOS

Signed-off-by: dab246 <tdvu@linagora.com>

core/lib/presentation/views/html_viewer/ios_html_content_viewer_widget.dart

@@ -0,0 +1,102 @@
+import 'dart:async';
+
+import 'package:core/data/constants/constant.dart';
+import 'package:core/presentation/views/html_viewer/html_content_viewer_widget.dart';
+import 'package:core/utils/html/html_interaction.dart';
+import 'package:core/utils/html/html_utils.dart';
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/foundation.dart';
+import 'package:flutter/gestures.dart';
+import 'package:flutter_inappwebview/flutter_inappwebview.dart';
+import 'package:url_launcher/url_launcher.dart' as launcher;
+import 'package:url_launcher/url_launcher_string.dart';
+
+class IosHtmlContentViewerWidget extends StatefulWidget {
+
+  final String contentHtml;
+  final TextDirection? direction;
+  final bool useDefaultFont;
+  final OnMailtoDelegateAction? onMailtoDelegateAction;
+  final OnPreviewEMLDelegateAction? onPreviewEMLDelegateAction;
+  final OnDownloadAttachmentDelegateAction? onDownloadAttachmentDelegateAction;
+
+  const IosHtmlContentViewerWidget({
+    Key? key,
+    required this.contentHtml,
+    this.direction,
+    this.useDefaultFont = false,
+    this.onMailtoDelegateAction,
+    this.onPreviewEMLDelegateAction,
+    this.onDownloadAttachmentDelegateAction,
+  }) : super(key: key);
+
+  @override
+  State<StatefulWidget> createState() => _IosHtmlContentViewerWidgetState();
+}
+
+class _IosHtmlContentViewerWidgetState extends State<IosHtmlContentViewerWidget> {
+
+  @override
+  Widget build(BuildContext context) {
+    return InAppWebView(
+      initialSettings: InAppWebViewSettings(transparentBackground: true),
+      onWebViewCreated: _onWebViewCreated,
+      shouldOverrideUrlLoading: _shouldOverrideUrlLoading,
+      gestureRecognizers: {
+        Factory<LongPressGestureRecognizer>(() => LongPressGestureRecognizer()),
+      },
+    );
+  }
+
+  Future<void> _onWebViewCreated(InAppWebViewController controller) async {
+    await controller.loadData(data: HtmlUtils.generateHtmlDocument(
+      content: widget.contentHtml,
+      direction: widget.direction,
+      javaScripts: HtmlInteraction.scriptsHandleLazyLoadingBackgroundImage,
+      useDefaultFont: widget.useDefaultFont,
+    ));
+  }
+
+  Future<NavigationActionPolicy?> _shouldOverrideUrlLoading(
+    InAppWebViewController controller,
+    NavigationAction navigationAction
+  ) async {
+    final url = navigationAction.request.url?.toString();
+
+    if (url == null) {
+      return NavigationActionPolicy.CANCEL;
+    }
+
+    if (navigationAction.isForMainFrame && url == 'about:blank') {
+      return NavigationActionPolicy.ALLOW;
+    }
+
+    final requestUri = Uri.parse(url);
+    if (widget.onMailtoDelegateAction != null &&
+        requestUri.isScheme(Constant.mailtoScheme)) {
+      await widget.onMailtoDelegateAction?.call(requestUri);
+      return NavigationActionPolicy.CANCEL;
+    }
+
+    if (widget.onPreviewEMLDelegateAction != null &&
+        requestUri.isScheme(Constant.emlPreviewerScheme)) {
+      await widget.onPreviewEMLDelegateAction?.call(requestUri);
+      return NavigationActionPolicy.CANCEL;
+    }
+
+    if (widget.onDownloadAttachmentDelegateAction != null &&
+        requestUri.isScheme(Constant.attachmentScheme)) {
+      await widget.onDownloadAttachmentDelegateAction?.call(requestUri);
+      return NavigationActionPolicy.CANCEL;
+    }
+
+    if (await launcher.canLaunchUrl(Uri.parse(url))) {
+      await launcher.launchUrl(
+        Uri.parse(url),
+        mode: LaunchMode.externalApplication
+      );
+    }
+
+    return NavigationActionPolicy.CANCEL;
+  }
+}

lib/features/email/presentation/controller/single_email_controller.dart

@@ -2428,9 +2428,17 @@ class SingleEmailController extends BaseController with AppLoaderMixin {
         return;
       }
 
-      showModalSheetToPreviewEMLAttachment(
-        currentContext!,
-        success.emlPreviewer);
+      if (PlatformInfo.isAndroid) {
+        showModalSheetToPreviewEMLAttachment(
+          currentContext!,
+          success.emlPreviewer,
+        );
+      } if (PlatformInfo.isIOS) {
+        showDialogToPreviewEMLAttachment(
+          currentContext!,
+          success.emlPreviewer,
+        );
+      }
     }
   }
 
@@ -2454,6 +2462,7 @@ class SingleEmailController extends BaseController with AppLoaderMixin {
           initialChildSize: 1.0,
           builder: (context, ___) => EmailPreviewerDialogView(
             emlPreviewer: emlPreviewer,
+            imagePaths: imagePaths,
             onMailtoDelegateAction: openMailToLink,
             onPreviewEMLDelegateAction: (uri) => _openEMLPreviewer(context, uri),
             onDownloadAttachmentDelegateAction: (uri) =>
@@ -2464,6 +2473,20 @@ class SingleEmailController extends BaseController with AppLoaderMixin {
     );
   }
 
+  void showDialogToPreviewEMLAttachment(BuildContext context, EMLPreviewer emlPreviewer) {
+    Get.dialog(
+      EmailPreviewerDialogView(
+        emlPreviewer: emlPreviewer,
+        imagePaths: imagePaths,
+        onMailtoDelegateAction: openMailToLink,
+        onPreviewEMLDelegateAction: (uri) => _openEMLPreviewer(context, uri),
+        onDownloadAttachmentDelegateAction: (uri) =>
+            _downloadAttachmentInEMLPreview(context, uri),
+      ),
+      barrierColor: AppColor.colorDefaultCupertinoActionSheet,
+    );
+  }
+
   Future<void> _openEMLPreviewer(BuildContext context, Uri? uri) async {
     log('SingleEmailController::_openEMLPreviewer:uri = $uri');
     if (uri == null) return;

lib/features/email_previewer/email_previewer_dialog_view.dart

@@ -1,13 +1,20 @@
 
+import 'package:core/presentation/extensions/color_extension.dart';
+import 'package:core/presentation/resources/image_paths.dart';
+import 'package:core/presentation/views/button/tmail_button_widget.dart';
 import 'package:core/presentation/views/html_viewer/html_content_viewer_widget.dart';
+import 'package:core/presentation/views/html_viewer/ios_html_content_viewer_widget.dart';
+import 'package:core/utils/platform_info.dart';
 import 'package:flutter/material.dart';
 import 'package:get/get.dart';
 import 'package:tmail_ui_user/features/email/presentation/model/eml_previewer.dart';
+import 'package:tmail_ui_user/main/routes/route_navigation.dart';
 import 'package:tmail_ui_user/main/utils/app_utils.dart';
 
 class EmailPreviewerDialogView extends StatelessWidget {
 
   final EMLPreviewer emlPreviewer;
+  final ImagePaths imagePaths;
   final OnMailtoDelegateAction onMailtoDelegateAction;
   final OnPreviewEMLDelegateAction onPreviewEMLDelegateAction;
   final OnDownloadAttachmentDelegateAction onDownloadAttachmentDelegateAction;
@@ -15,6 +22,7 @@ class EmailPreviewerDialogView extends StatelessWidget {
   const EmailPreviewerDialogView({
     super.key,
     required this.emlPreviewer,
+    required this.imagePaths,
     required this.onMailtoDelegateAction,
     required this.onPreviewEMLDelegateAction,
     required this.onDownloadAttachmentDelegateAction,
@@ -22,18 +30,73 @@ class EmailPreviewerDialogView extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return Scaffold(
-      backgroundColor: Colors.white,
-      body: SingleChildScrollView(
-        child: HtmlContentViewer(
-          contentHtml: emlPreviewer.content,
-          initialWidth: context.width,
-          direction: AppUtils.getCurrentDirection(context),
-          onMailtoDelegateAction: onMailtoDelegateAction,
-          onPreviewEMLDelegateAction: onPreviewEMLDelegateAction,
-          onDownloadAttachmentDelegateAction: onDownloadAttachmentDelegateAction,
+    if (PlatformInfo.isIOS) {
+      return Dialog(
+        shape: const RoundedRectangleBorder(
+          borderRadius: BorderRadius.only(
+            topRight: Radius.circular(16),
+            topLeft: Radius.circular(16),
+          ),
         ),
-      ),
-    );
+        insetPadding: EdgeInsets.zero,
+        alignment: Alignment.center,
+        backgroundColor: Colors.white,
+        child: Container(
+          decoration: const BoxDecoration(
+            borderRadius: BorderRadius.only(
+              topRight: Radius.circular(16),
+              topLeft: Radius.circular(16),
+            ),
+          ),
+          width: double.infinity,
+          height: double.infinity,
+          clipBehavior: Clip.antiAlias,
+          child: Column(
+            children: [
+              SizedBox(
+                height: 52,
+                child: Row(
+                  children: [
+                    const Spacer(),
+                    TMailButtonWidget.fromIcon(
+                      icon: imagePaths.icComposerClose,
+                      backgroundColor: Colors.transparent,
+                      margin: const EdgeInsetsDirectional.only(end: 12),
+                      onTapActionCallback: popBack,
+                    )
+                  ],
+                ),
+              ),
+              const Divider(color: AppColor.colorDivider, height: 1),
+              Expanded(
+                child: IosHtmlContentViewerWidget(
+                  contentHtml: emlPreviewer.content,
+                  useDefaultFont: true,
+                  direction: AppUtils.getCurrentDirection(context),
+                  onMailtoDelegateAction: onMailtoDelegateAction,
+                  onPreviewEMLDelegateAction: onPreviewEMLDelegateAction,
+                  onDownloadAttachmentDelegateAction: onDownloadAttachmentDelegateAction,
+                ),
+              ),
+            ],
+          ),
+        ),
+      );
+    } else {
+      return Scaffold(
+        backgroundColor: Colors.white,
+        body: SingleChildScrollView(
+          child: HtmlContentViewer(
+            contentHtml: emlPreviewer.content,
+            initialWidth: context.width,
+            useDefaultFont: true,
+            direction: AppUtils.getCurrentDirection(context),
+            onMailtoDelegateAction: onMailtoDelegateAction,
+            onPreviewEMLDelegateAction: onPreviewEMLDelegateAction,
+            onDownloadAttachmentDelegateAction: onDownloadAttachmentDelegateAction,
+          ),
+        ),
+      );
+    }
   }
 }