Add license dialog

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## 2.2.0
+
+- Implement about dialog orientation
+- Add license extractor
+- Add license dialog
+
 ## 2.1.3
 
 - Update dependencies

lib/about.dart

@@ -17,7 +17,9 @@
 export 'src/about.dart';
 export 'src/about_content.dart';
 export 'src/about_list_title.dart';
+export 'src/license_dialog.dart';
 export 'src/licenses.dart';
+export 'src/licenses_extractor.dart';
 export 'src/licenses_list_title.dart';
 export 'src/markdown.dart';
 export 'src/markdown_list_title.dart';

lib/src/about.dart

@@ -56,6 +56,7 @@ class AboutPage extends StatelessWidget {
     this.dialog = false,
     this.children,
     this.values = const {},
+    this.orientation = Axis.vertical,
   }) : super(key: key);
 
   /// The title of the page.
@@ -106,6 +107,8 @@ class AboutPage extends StatelessWidget {
   /// Show a dialog instead of a fullscreen page
   final bool dialog;
 
+  final Axis orientation;
+
   /// Widgets to add to the dialog box after the name, version, and legalese.
   ///
   /// This could include a link to a Web site, some descriptive text, credits,
@@ -134,6 +137,7 @@ class AboutPage extends StatelessWidget {
       applicationLegalese: applicationLegalese,
       applicationDescription: applicationDescription,
       values: values,
+      orientation: orientation,
       children: children,
     );
 
@@ -146,21 +150,17 @@ class AboutPage extends StatelessWidget {
         );
       }
 
-      return SimpleDialog(
-        title: localTitle,
-        children: <Widget>[
-          body,
-          ButtonBar(
-            children: <Widget>[
-              TextButton(
-                onPressed: () => Navigator.pop(context),
-                child: Text(
-                  isCupertino(context)
-                      ? 'Close'
-                      : MaterialLocalizations.of(context).closeButtonLabel,
-                ),
-              ),
-            ],
+      return AlertDialog(
+        // title: localTitle,
+        content: body,
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context),
+            child: Text(
+              isCupertino(context)
+                  ? 'Close'
+                  : MaterialLocalizations.of(context).closeButtonLabel,
+            ),
           ),
         ],
       );
@@ -199,6 +199,7 @@ Future<void> showAboutPage({
   bool dialog = false,
   List<Widget>? children,
   Map<String, String> values = const {},
+  Axis orientation = Axis.vertical,
 }) async {
   final page = AboutPage(
     title: title,
@@ -210,6 +211,7 @@ Future<void> showAboutPage({
     applicationDescription: applicationDescription,
     dialog: dialog,
     values: values,
+    orientation: orientation,
     children: children,
   );
 

lib/src/about_content.dart

@@ -51,6 +51,7 @@ class AboutContent extends StatefulWidget {
     this.applicationDescription,
     this.children,
     this.values = const {},
+    this.orientation = Axis.vertical,
   }) : super(key: key);
 
   /// The name of the application.
@@ -97,6 +98,8 @@ class AboutContent extends StatefulWidget {
   /// Template replacement values
   final Map<String, String> values;
 
+  final Axis orientation;
+
   @override
   AboutContentState createState() => AboutContentState();
 }
@@ -108,61 +111,79 @@ class AboutContentState extends State<AboutContent> {
 
     final icon = widget.applicationIcon ?? defaultApplicationIcon(context);
 
-    final body = <Widget>[];
-
-    if (icon != null) {
-      body.add(const SizedBox(height: 10));
-      body.add(
-        IconTheme(data: const IconThemeData(size: 48), child: icon),
-      );
-    }
-
     final version = Template(
       widget.applicationVersion ?? defaultApplicationVersion(context),
     ).render(widget.values);
 
-    body.add(
-      Padding(
-        padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 18),
-        child: ListBody(
-          children: <Widget>[
-            Text(
-              name,
-              style: Theme.of(context).textTheme.headlineSmall,
-              textAlign: TextAlign.center,
+    final textAlign =
+        widget.orientation == Axis.vertical ? TextAlign.center : null;
+
+    final body = Padding(
+      padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 18),
+      child: ListBody(
+        children: <Widget>[
+          Text(
+            name,
+            style: Theme.of(context).textTheme.headlineSmall,
+            textAlign: textAlign,
+          ),
+          Text(
+            version,
+            style: Theme.of(context).textTheme.bodyMedium,
+            textAlign: textAlign,
+          ),
+          if (widget.applicationLegalese != null)
+            Padding(
+              padding: const EdgeInsets.only(top: 18),
+              child: Text(
+                Template(widget.applicationLegalese!).render(widget.values),
+                style: Theme.of(context).textTheme.bodySmall,
+                textAlign: textAlign,
+              ),
             ),
-            Text(
-              version,
-              style: Theme.of(context).textTheme.bodyMedium,
-              textAlign: TextAlign.center,
+          if (widget.applicationDescription != null) ...[
+            const Divider(),
+            Container(
+              padding: const EdgeInsets.only(top: 8, bottom: 8),
+              child: widget.applicationDescription,
             ),
-            if (widget.applicationLegalese != null)
-              Padding(
-                padding: const EdgeInsets.only(top: 18),
-                child: Text(
-                  Template(widget.applicationLegalese!).render(widget.values),
-                  style: Theme.of(context).textTheme.bodySmall,
-                  textAlign: TextAlign.center,
-                ),
-              ),
-            if (widget.applicationDescription != null) const Divider(),
-            if (widget.applicationDescription != null)
-              Container(
-                padding: const EdgeInsets.only(top: 8, bottom: 8),
-                child: widget.applicationDescription,
-              ),
-            if (widget.applicationDescription != null) const Divider(),
+            const Divider(),
           ],
-        ),
+        ],
       ),
     );
 
-    if (widget.children != null) {
-      body.addAll(widget.children!);
+    if (widget.orientation == Axis.vertical) {
+      return SingleChildScrollView(
+        child: ListBody(
+          children: [
+            if (icon != null) ...[
+              const SizedBox(height: 10),
+              IconTheme(data: const IconThemeData(size: 48), child: icon),
+            ],
+            body,
+            if (widget.children != null) ...widget.children!,
+          ],
+        ),
+      );
     }
 
+    final themeData = Theme.of(context);
+
     return SingleChildScrollView(
-      child: ListBody(children: body),
+      child: ListBody(
+        children: [
+          Row(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: <Widget>[
+              if (icon != null)
+                IconTheme(data: themeData.iconTheme, child: icon),
+              Expanded(child: body),
+            ],
+          ),
+          if (widget.children != null) ...widget.children!,
+        ],
+      ),
     );
   }
 }

lib/src/about_list_title.dart

@@ -55,6 +55,7 @@ class AboutPageListTile extends StatelessWidget {
     this.aboutBoxChildren,
     this.values = const {},
     this.trailing,
+    this.orientation = Axis.vertical,
   }) : super(key: key);
 
   /// The icon to show for this drawer item.
@@ -132,6 +133,8 @@ class AboutPageListTile extends StatelessWidget {
 
   final Widget? trailing;
 
+  final Axis orientation;
+
   @override
   Widget build(BuildContext context) {
     assert(debugCheckHasMaterial(context));
@@ -160,6 +163,7 @@ class AboutPageListTile extends StatelessWidget {
           dialog: dialog,
           children: aboutBoxChildren,
           values: values,
+          orientation: orientation,
         );
       },
     );

lib/src/license_dialog.dart

@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2019, David PHAM-VAN <[email protected]>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import 'package:flutter/material.dart';
+import 'package:flutter_markdown/flutter_markdown.dart';
+
+import 'markdown.dart';
+
+class LicenseDialog extends StatelessWidget {
+  const LicenseDialog({
+    Key? key,
+    required this.text,
+  }) : super(key: key);
+
+  final String text;
+
+  @override
+  Widget build(BuildContext context) {
+    final themeData = Theme.of(context);
+    final localizations = MaterialLocalizations.of(context);
+
+    return AlertDialog(
+      content: Padding(
+        padding: const EdgeInsets.all(8),
+        child: SizedBox(
+          width: 500,
+          child: MarkdownBody(
+            data: text,
+            softLineBreak: true,
+            onTapLink: (text, href, title) =>
+                const UrlMarkdownTapHandler().onTap(context, text, href, title),
+          ),
+        ),
+      ),
+      actions: <Widget>[
+        TextButton(
+          child: Text(
+            themeData.useMaterial3
+                ? localizations.closeButtonLabel
+                : localizations.closeButtonLabel.toUpperCase(),
+          ),
+          onPressed: () {
+            Navigator.pop(context);
+          },
+        ),
+      ],
+      scrollable: true,
+    );
+  }
+}