added bottomsheet for task preview

lib/components/TaskBottomSheet.dart

@@ -0,0 +1,63 @@
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_widget_from_html/flutter_widget_from_html.dart';
+
+import '../models/task.dart';
+
+class TaskBottomSheet extends StatefulWidget {
+  final Task task;
+  final bool showInfo;
+  final bool loading;
+  final ValueSetter<bool>? onMarkedAsDone;
+
+  const TaskBottomSheet({
+    Key? key,
+    required this.task,
+    this.loading = false,
+    this.showInfo = false,
+    this.onMarkedAsDone,
+  }) : super(key: key);
+/*
+  @override
+  TaskTileState createState() {
+    return new TaskTileState(this.task, this.loading);
+  }
+
+ */
+  @override
+  TaskBottomSheetState createState() => TaskBottomSheetState(this.task);
+}
+
+class TaskBottomSheetState extends State<TaskBottomSheet> {
+  Task _currentTask;
+
+  TaskBottomSheetState(this._currentTask);
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      height: MediaQuery.of(context).size.height * 0.9,
+      child: Center(
+        child: Padding(
+          padding: EdgeInsets.fromLTRB(10, 10, 10, 10),
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.start,
+          mainAxisSize: MainAxisSize.max,
+
+          children: <Widget>[
+            Row(
+              mainAxisAlignment: MainAxisAlignment.spaceBetween,
+              children: [
+                Text(_currentTask.title),
+                BackButton(),
+              ],
+            ),
+            HtmlWidget(_currentTask.description),
+          ],
+        ),
+        )
+      ),
+    );
+  }
+
+}

lib/components/TaskTile.dart

@@ -3,6 +3,7 @@ import 'dart:async';
 import 'package:flutter/material.dart';
 import 'package:flutter_widget_from_html/flutter_widget_from_html.dart';
 import 'package:provider/provider.dart';
+import 'package:vikunja_app/components/TaskBottomSheet.dart';
 import 'package:vikunja_app/models/task.dart';
 import 'package:vikunja_app/utils/misc.dart';
 import 'package:vikunja_app/pages/list/task_edit.dart';
@@ -32,30 +33,35 @@ class TaskTile extends StatefulWidget {
   }
 
  */
-@override
+  @override
   TaskTileState createState() => TaskTileState(this.task);
 }
 
-Widget? _buildTaskSubtitle(Task? task, bool showInfo) {
+Widget? _buildTaskSubtitle(Task? task, bool showInfo, BuildContext context) {
   Duration? durationUntilDue = task?.dueDate?.difference(DateTime.now());
 
-  if(task == null)
+  if (task == null) return null;
-    return null;
 
   List<TextSpan> texts = [];
-  
+
-  if(showInfo && task.hasDueDate) {
+  if (showInfo && task.hasDueDate) {
-    texts.add(TextSpan(text: "Due " + durationToHumanReadable(durationUntilDue!), style: durationUntilDue.isNegative ? TextStyle(color: Colors.red) : null));
+    texts.add(TextSpan(
+        text: "Due " + durationToHumanReadable(durationUntilDue!),
+        style: durationUntilDue.isNegative
+            ? TextStyle(color: Colors.red)
+            : Theme.of(context).textTheme.bodyMedium));
   }
-  if(task.priority != null && task.priority != 0) {
+  if (task.priority != null && task.priority != 0) {
-    texts.add(TextSpan(text: " !" + priorityToString(task.priority), style: TextStyle(color: Colors.orange)));
+    texts.add(TextSpan(
+        text: " !" + priorityToString(task.priority),
+        style: TextStyle(color: Colors.orange)));
   }
 
   //if(texts.isEmpty && task.description.isNotEmpty) {
   //  return HtmlWidget(task.description);
- // }
+  // }
 
-  if(texts.isNotEmpty) {
+  if (texts.isNotEmpty) {
     return RichText(text: TextSpan(children: texts));
   }
   return null;
@@ -82,59 +88,73 @@ class TaskTileState extends State<TaskTile> with AutomaticKeepAliveClientMixin {
               )),
         ),
         title: Text(_currentTask.title),
-        subtitle:
+        subtitle: _currentTask.description.isEmpty
-            _currentTask.description.isEmpty
+            ? null
-                ? null
+            : HtmlWidget(_currentTask.description),
-                : HtmlWidget(_currentTask.description),
         trailing: IconButton(
-            icon: Icon(Icons.settings), onPressed: () {  },
+          icon: Icon(Icons.settings),
-            ),
+          onPressed: () {},
+        ),
       );
     }
-    return
+    return IntrinsicHeight(
-    IntrinsicHeight(child:
+        child: Row(crossAxisAlignment: CrossAxisAlignment.stretch, children: [
-      Row(
+      Container(
-          crossAxisAlignment: CrossAxisAlignment.stretch,
+        width: 4.0, // Adjust the width of the red line
-        children: [
+        color: widget.task.color,
-          Container(
+        //margin: EdgeInsets.only(left: 10.0),
-            width: 4.0, // Adjust the width of the red line
+      ),
-            color: widget.task.color,
+      Flexible(
-            //margin: EdgeInsets.only(left: 10.0),
+          child: ListTile(
-          ),
+        onTap: () {
-          Flexible(child: CheckboxListTile(
+          showModalBottomSheet<void>(
-      title: widget.showInfo ?
+              context: context,
-          RichText(
+              builder: (BuildContext context) {
-            text: TextSpan(
+                return TaskBottomSheet(task: widget.task);
-              text: null,
+              });
-              children: <TextSpan> [
+        },
-                // TODO: get list name of task
+        title: widget.showInfo
-                //TextSpan(text: widget.task.list.title+" - ", style: TextStyle(color: Colors.grey)),
+            ? RichText(
-                TextSpan(text: widget.task.title),
+                text: TextSpan(
-              ],
+                text: null,
-              style: TextStyle(
+                children: <TextSpan>[
-                color: Theme.of(context).brightness == Brightness.dark ? Colors.white : Colors.black,
+                  // TODO: get list name of task
-              ),
+                  //TextSpan(text: widget.task.list.title+" - ", style: TextStyle(color: Colors.grey)),
-            )
+                  TextSpan(text: widget.task.title),
-          ) : Text(_currentTask.title),
+                ],
-      controlAffinity: ListTileControlAffinity.leading,
+                style: TextStyle(
-      value: _currentTask.done,
+                  color: Theme.of(context).brightness == Brightness.dark
-      subtitle: _buildTaskSubtitle(widget.task, widget.showInfo),
+                      ? Colors.white
-      secondary:
+                      : Colors.black,
-          IconButton(icon: Icon(Icons.settings), onPressed: () {
-            Navigator.push<Task>(
-              context,
-              MaterialPageRoute(
-                builder: (buildContext) => TaskEditPage(
-                  task: _currentTask,
-                  taskState: taskState,
                 ),
-              ),
+              ))
-            ).then((task) => setState(() {
+            : Text(_currentTask.title),
-              if (task != null) _currentTask = task;
+        subtitle: _buildTaskSubtitle(widget.task, widget.showInfo, context),
-            })).whenComplete(() => widget.onEdit());
+        leading: Checkbox(
-          }),
+          value: _currentTask.done,
-      onChanged: _change,
+          onChanged: (bool? newValue) {
-    ))]));
+            _change(newValue);
+          },
+        ),
+        trailing: IconButton(
+            icon: Icon(Icons.settings),
+            onPressed: () {
+              Navigator.push<Task>(
+                context,
+                MaterialPageRoute(
+                  builder: (buildContext) => TaskEditPage(
+                    task: _currentTask,
+                    taskState: taskState,
+                  ),
+                ),
+              )
+                  .then((task) => setState(() {
+                        if (task != null) _currentTask = task;
+                      }))
+                  .whenComplete(() => widget.onEdit());
+            }),
+      ))
+    ]));
   }
 
   void _change(bool? value) async {
@@ -144,8 +164,7 @@ class TaskTileState extends State<TaskTile> with AutomaticKeepAliveClientMixin {
     });
     Task? newTask = await _updateTask(_currentTask, value);
     setState(() {
-      if(newTask != null)
+      if (newTask != null) this._currentTask = newTask;
-        this._currentTask = newTask;
       this._currentTask.loading = false;
     });
     widget.onEdit();