Add menu dialog on link opening button for external, copy url, and on posts "go to post"

lib/controls/timeline/interactions_bar_control.dart

@@ -5,6 +5,7 @@ import 'package:logging/logging.dart';
 import '../../globals.dart';
 import '../../models/timeline_entry.dart';
 import '../../services/timeline_manager.dart';
+import '../../utils/clipboard_utils.dart';
 import '../../utils/snackbar_builder.dart';
 import '../../utils/url_opening_utils.dart';
 
@@ -122,18 +123,42 @@ class _InteractionsBarControlState extends State<InteractionsBarControl> {
   }
 
   Future<void> openAction(BuildContext context) async {
-    if (widget.openRemote) {
-      final openInBrowser =
-          await showYesNoDialog(context, 'Open in external browser?');
-      if (openInBrowser == true && mounted) {
+    const goToPost = 'Go to Post';
+    const copyUrl = 'Copy URL';
+    const openExternal = 'Open In Browser';
+    final options = [
+      if (widget.showOpenControl && !widget.openRemote) goToPost,
+      openExternal,
+      copyUrl,
+      'Cancel'
+    ];
+    final result =
+        await showChooseOptions(context, 'Would you like to', options);
+
+    if (!mounted) {
+      return;
+    }
+
+    switch (result) {
+      case goToPost:
+        context.push('/post/view/${widget.entry.id}/${widget.entry.id}');
+        break;
+      case openExternal:
         await openUrlStringInSystembrowser(
           context,
           widget.entry.externalLink,
           'Post',
         );
-      }
-    } else {
-      context.push('/post/view/${widget.entry.id}/${widget.entry.id}');
+        break;
+      case copyUrl:
+        await copyToClipboard(
+          context: context,
+          text: widget.entry.externalLink,
+          message: 'Post link copied to clipboard',
+        );
+        break;
+      default:
+      //do nothing
     }
   }
 
@@ -176,20 +201,19 @@ class _InteractionsBarControlState extends State<InteractionsBarControl> {
                 onPressed:
                     isProcessing ? null : () async => await deleteEntry(),
                 icon: Icon(Icons.delete)),
-          if (widget.showOpenControl)
-            Expanded(
-              child: Row(
-                mainAxisAlignment: MainAxisAlignment.end,
-                children: [
-                  IconButton(
-                    onPressed: () async {
-                      await openAction(context);
-                    },
-                    icon: const Icon(Icons.launch),
-                  ),
-                ],
-              ),
+          Expanded(
+            child: Row(
+              mainAxisAlignment: MainAxisAlignment.end,
+              children: [
+                IconButton(
+                  onPressed: () async {
+                    await openAction(context);
+                  },
+                  icon: const Icon(Icons.launch),
+                ),
+              ],
             ),
+          ),
         ]),
       ],
     );

lib/globals.dart

@@ -60,3 +60,26 @@ Future<bool?> showYesNoDialog(BuildContext context, String caption) {
     },
   );
 }
+
+Future<String?> showChooseOptions(
+  BuildContext context,
+  String caption,
+  List<String> options,
+) {
+  return showDialog<String?>(
+    context: context,
+    barrierDismissible: false,
+    builder: (BuildContext context) {
+      return AlertDialog(
+          title: Text(caption),
+          actions: options
+              .map((o) => ElevatedButton(
+                    child: Text(o),
+                    onPressed: () {
+                      Navigator.pop(context, o); // showDialog() returns true
+                    },
+                  ))
+              .toList());
+    },
+  );
+}

lib/utils/clipboard_utils.dart

@@ -0,0 +1,15 @@
+import 'package:flutter/services.dart';
+import 'package:flutter/widgets.dart';
+
+import 'snackbar_builder.dart';
+
+Future copyToClipboard({
+  required BuildContext context,
+  required String text,
+  String message = 'Copied to clipboard',
+}) async {
+  await Clipboard.setData(ClipboardData(text: text));
+  if (context.mounted) {
+    buildSnackbar(context, message);
+  }
+}

lib/utils/url_opening_utils.dart

@@ -11,13 +11,19 @@ Future<bool> openUrlStringInSystembrowser(
     return false;
   }
   if (await canLaunchUrl(uri)) {
-    buildSnackbar(
-      context,
-      'Attempting to launch $label: $url',
-    );
+    if (context.mounted) {
+      buildSnackbar(
+        context,
+        'Attempting to launch $label: $url',
+      );
+    }
+
     await launchUrl(uri);
   } else {
-    buildSnackbar(context, 'Unable to launch $label: $url');
+    if (context.mounted) {
+      buildSnackbar(context, 'Unable to launch $label: $url');
+    }
+
     return false;
   }
   return true;