TF-105 [BUG] Fix long line should be wrapped
This commit is contained in:
dab246
@@ -1,55 +1,31 @@
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import 'package:core/presentation/utils/html_transformer/html_transform.dart';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/gestures.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_inappwebview/flutter_inappwebview.dart';
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import 'package:url_launcher/url_launcher.dart' as launcher;
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class _HtmlGenerationArguments {
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final String message;
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final bool blockExternalImages;
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const _HtmlGenerationArguments(
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this.message,
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this.blockExternalImages,
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);
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}
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class _HtmlGenerationResult {
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final String? html;
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final String? errorDetails;
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const _HtmlGenerationResult.success(this.html) : errorDetails = null;
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const _HtmlGenerationResult.error(this.errorDetails) : this.html = null;
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}
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class HtmlContentViewer extends StatefulWidget {
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final String message;
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final bool blockExternalImages;
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/// Is notified about any errors that might occur
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final void Function(Object? exception, StackTrace? stackTrace)? onError;
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final String contentHtml;
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final int minHeight;
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/// Register this callback if you want a reference to the [InAppWebViewController].
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final void Function(InAppWebViewController controller)? onWebViewCreated;
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final void Function(InAppWebViewController controller)? onCreated;
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final void Function(InAppWebViewController controller, Uri? uri)? onWebViewLoadStart;
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final void Function(InAppWebViewController controller, Uri? uri)? onLoadStart;
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final void Function(InAppWebViewController controller, Uri? uri)? onWebViewLoadStop;
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final void Function(InAppWebViewController controller, Uri? uri)? onLoadStop;
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/// Handler for mailto: links
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final Future Function(Uri mailto)? mailtoDelegate;
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const HtmlContentViewer({
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Key? key,
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required this.message,
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this.blockExternalImages = false,
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this.onError,
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this.onWebViewCreated,
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this.onWebViewLoadStart,
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this.onWebViewLoadStop,
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required this.contentHtml,
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this.minHeight = 100,
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this.onCreated,
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this.onLoadStart,
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this.onLoadStop,
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this.mailtoDelegate,
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}) : super(key: key);
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@@ -59,123 +35,126 @@ class HtmlContentViewer extends StatefulWidget {
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class _HtmlContentViewState extends State<HtmlContentViewer> {
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String? _htmlData;
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bool? _wereExternalImagesBlocked;
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bool _isGenerating = false;
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double? _webViewContentHeight = 1.0;
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double? _documentHeight = 1.0;
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double? _documentWidth = 1.0;
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String? _initialPageContent;
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late InAppWebViewController _webViewController;
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@override
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void initState() {
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_generateHtml(widget.blockExternalImages);
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super.initState();
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_initialPageContent = _generateHtmlDocument(widget.contentHtml);
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}
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void _generateHtml(bool blockExternalImages) async {
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_wereExternalImagesBlocked = blockExternalImages;
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_isGenerating = true;
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final args = _HtmlGenerationArguments(
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widget.message,
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blockExternalImages,
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);
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final result = await compute(_generateHtmlImpl, args);
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_htmlData = result.html;
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if (_htmlData == null) {
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final onError = widget.onError;
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if (onError != null) {
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onError(result.errorDetails, null);
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}
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}
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if (mounted) {
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setState(() {
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_isGenerating = false;
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});
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}
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}
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String _generateHtmlDocument(String content) {
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final htmlTemplate = '''
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<!DOCTYPE html>
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<html>
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<head>
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<style>
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#editor {
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outline: 0px solid transparent;
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min-height: ${widget.minHeight}px;
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min-width: 300px;
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color: #182952;
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font-family: verdana;
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}
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blockquote {
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font: normal helvetica, verdana;
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margin-top: 10px;
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margin-bottom: 10px;
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margin-left: 20px;
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padding-left: 15px;
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border-left: 5px solid #eee;
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}
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table {
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width: 100%;
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max-width: 100%;
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}
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td {
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padding: 13px;
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margin: 0px;
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}
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th {
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padding: 13px;
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margin: 0px;
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}
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</style>
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<script>
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var documentHeight;
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static _HtmlGenerationResult _generateHtmlImpl(_HtmlGenerationArguments args) {
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try {
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final htmlTransform = HtmlTransform(args.message);
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final html = htmlTransform.transformToHtml(
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blockExternalImages: args.blockExternalImages,
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);
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return _HtmlGenerationResult.success(html);
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} catch (e, s) {
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String errorDetails = e.toString() + '\n\n' + s.toString();
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return _HtmlGenerationResult.error(errorDetails);
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}
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function onLoaded() {
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documentHeight = document.body.scrollHeight;
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document.execCommand("styleWithCSS", false, true);
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}
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</script>
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</head>
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<body onload="onLoaded();">
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<div id="editor">$content</div>
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</body>
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</html>
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''';
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return htmlTemplate;
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}
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@override
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Widget build(BuildContext context) {
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if (_isGenerating) {
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return SizedBox.shrink();
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}
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if (widget.blockExternalImages != _wereExternalImagesBlocked) {
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_generateHtml(widget.blockExternalImages);
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}
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final size = MediaQuery.of(context).size;
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_documentWidth = size.width - 30;
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return SizedBox(
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height: _webViewContentHeight,
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width: size.width,
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child: Padding(
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padding: EdgeInsets.only(top: 16),
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child: _buildWebView(),
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),
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height: _documentHeight,
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width: _documentWidth,
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child: _buildWebView(),
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);
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}
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Widget _buildWebView() {
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if (_htmlData == null) {
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if (_initialPageContent == null || _initialPageContent?.isEmpty == true) {
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return Container();
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}
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return InAppWebView(
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key: ValueKey(_htmlData),
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initialData: InAppWebViewInitialData(data: _htmlData!),
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key: ValueKey(_initialPageContent),
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initialData: InAppWebViewInitialData(data: _initialPageContent!),
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initialOptions: InAppWebViewGroupOptions(
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crossPlatform: InAppWebViewOptions(
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useShouldOverrideUrlLoading: true,
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verticalScrollBarEnabled: false,
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disableVerticalScroll: true,
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transparentBackground: true,
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disableVerticalScroll: false,
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disableHorizontalScroll: false,
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supportZoom: true,
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),
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android: AndroidInAppWebViewOptions(
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useWideViewPort: false,
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loadWithOverviewMode: true,
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useHybridComposition: true,
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),
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ios: IOSInAppWebViewOptions(
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allowsInlineMediaPlayback: true,
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enableViewportScale: true,
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enableViewportScale: false,
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allowsLinkPreview: false
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)
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),
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),
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onLoadStart: (controller, uri) {
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if (widget.onWebViewLoadStart != null) {
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widget.onWebViewLoadStart!(controller, uri);
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if (widget.onLoadStart != null) {
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widget.onLoadStart!(controller, uri);
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}
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},
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onWebViewCreated: widget.onWebViewCreated,
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onWebViewCreated: _onWebViewCreated,
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onLoadStop: (controller, uri) async {
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var scrollHeight = (await controller.evaluateJavascript(source: 'document.body.scrollHeight'));
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if (scrollHeight != null) {
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final scrollWidth = (await controller.evaluateJavascript(source: 'document.body.scrollWidth'));
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final size = MediaQuery.of(context).size;
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final containerWidth = size.width - 60.0;
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if (scrollWidth > containerWidth) {
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var scale = (containerWidth / scrollWidth);
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if (scale < 0.2) {
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scale = 0.2;
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}
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await controller.zoomBy(zoomFactor: scale, iosAnimated: true);
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scrollHeight = (scrollHeight * scale).ceil();
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}
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final scrollHeight = await _webViewController.evaluateJavascript(source: 'document.body.scrollHeight');
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if ((scrollHeight != null) && mounted && (scrollHeight + 30.0 > widget.minHeight)) {
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setState(() {
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_webViewContentHeight = double.tryParse('${scrollHeight + 24}');
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_documentHeight = (scrollHeight + 30.0);
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});
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}
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if (widget.onWebViewLoadStop != null) {
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widget.onWebViewLoadStop!(controller, uri);
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if (widget.onLoadStop != null) {
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widget.onLoadStop!(controller, uri);
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}
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},
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onScrollChanged: (controller, x, y) {
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if (y != 0) {
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controller.scrollTo(x: 0, y: 0);
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}
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},
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shouldOverrideUrlLoading: _shouldOverrideUrlLoading,
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@@ -185,6 +164,13 @@ class _HtmlContentViewState extends State<HtmlContentViewer> {
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);
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}
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void _onWebViewCreated(InAppWebViewController controller) {
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_webViewController = controller;
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if (widget.onCreated != null) {
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widget.onCreated!(_webViewController);
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}
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}
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Future<NavigationActionPolicy> _shouldOverrideUrlLoading(
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InAppWebViewController controller,
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NavigationAction request
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