Fix

Xamarin.Neo4j/Xamarin.Neo4j/Xamarin.Neo4j.iOS/CustomRenderers/QueryEditorRenderer.cs

@@ -7,6 +7,7 @@
 // © Xamarin.Neo4j.iOS
 //
 
+using CoreGraphics;
 using UIKit;
 using Xamarin.Forms;
 using Xamarin.Forms.Platform.iOS;
@@ -18,6 +19,31 @@ namespace Xamarin.Neo4j.iOS.CustomRenderers
 {
     public class QueryEditorRenderer : EditorRenderer
     {
+        protected override void OnElementChanged(ElementChangedEventArgs<Editor> e)
+        {
+            base.OnElementChanged(e);
 
+            if (Control != null && Element != null)
+            {
+                var executeButton = new UIBarButtonItem("Execute", UIBarButtonItemStyle.Done, (sender, args) =>
+                {
+                    if (Element is QueryEditor queryEditor)
+                    {
+                        queryEditor.RaiseExecuteClicked();
+                        
+                        Control.ResignFirstResponder();
+                    }
+                });
+                
+                var toolbar = new UIToolbar(new CGRect(0.0f, 0.0f, Control.Frame.Size.Width, 44.0f));
+                toolbar.Items = new[]
+                {
+                    new UIBarButtonItem(UIBarButtonSystemItem.FlexibleSpace),
+                    executeButton
+                };
+
+                Control.InputAccessoryView = toolbar;
+            }
+        }
     }
 }

Xamarin.Neo4j/Xamarin.Neo4j/Xamarin.Neo4j/Controls/QueryEditor.cs

@@ -16,6 +16,8 @@ namespace Xamarin.Neo4j.Controls
     {
         public double MaxHeight { get; set; }
 
+        public event EventHandler ExecuteClicked;
+
         protected override SizeRequest OnMeasure(double widthConstraint, double heightConstraint)
         {
             var sizeRequest = base.OnMeasure(widthConstraint, heightConstraint);
@@ -27,5 +29,10 @@ namespace Xamarin.Neo4j.Controls
 
             return new SizeRequest(new Size(sizeRequest.Request.Width, newHeight));
         }
+        
+        public void RaiseExecuteClicked()
+        {
+            ExecuteClicked?.Invoke(this, EventArgs.Empty);
+        }
     }
 }

Xamarin.Neo4j/Xamarin.Neo4j/Xamarin.Neo4j/Controls/QueryResultView.xaml.cs

@@ -62,7 +62,7 @@ namespace Xamarin.Neo4j.Controls
                 result = result.Replace("{{password}}", QueryResult.ConnectionString.Password);
                 result = result.Replace("{{encryption}}", isEncrypted ? "ENCRYPTION_ON" : "ENCRYPTION_OFF");
                 result = result.Replace("{{trust}}", ignoreTrust ? "TRUST_ALL_CERTIFICATES" : "TRUST_SYSTEM_CA_SIGNED_CERTIFICATES");
-                result = result.Replace("{{query}}", QueryResult.Query);
+                result = result.Replace("{{query}}", QueryResult.DisplayQuery);
                 result = result.Replace("{{backgroundColor}}", App.Current.RequestedTheme == OSAppTheme.Dark ? "#292C31" : "#FFFFFF");
 
                 _neovisHtml = result;

Xamarin.Neo4j/Xamarin.Neo4j/Xamarin.Neo4j/Models/QueryResult.cs

@@ -25,6 +25,8 @@ namespace Xamarin.Neo4j.Models
         public string ErrorMessage { get; set; }
 
         public string Query { get; set; }
+        
+        public string DisplayQuery { get; set; }
 
         public Neo4jConnectionString ConnectionString { get; set; }
 

Xamarin.Neo4j/Xamarin.Neo4j/Xamarin.Neo4j/Pages/SessionPage.xaml

@@ -36,18 +36,18 @@
     </ContentPage.ToolbarItems>
 
     <ContentPage.Content>
-        <StackLayout>
+        <StackLayout VerticalOptions="FillAndExpand">
             <pancakeView:PancakeView BackgroundColor="White" CornerRadius="2" Padding="4" Margin="16">
                 <pancakeView:PancakeView CornerRadius="2">
                     <pancakeView:PancakeView.Border>
                         <pancakeView:Border Thickness="2" Color="#d8e5f1" />
                     </pancakeView:PancakeView.Border>
 
-                    <controls:QueryEditor Text="{Binding Query}" MaxHeight="200" HorizontalOptions="FillAndExpand" AutoSize="TextChanges"  />
+                    <controls:QueryEditor Text="{Binding Query}" ExecuteClicked="ExecuteQuery" MaxHeight="200" HorizontalOptions="FillAndExpand" AutoSize="TextChanges"  />
                 </pancakeView:PancakeView>
             </pancakeView:PancakeView>
 
-            <CollectionView x:Name="resultsCollection" ItemsSource="{Binding QueryResults}">
+            <CollectionView x:Name="resultsCollection" ItemsSource="{Binding QueryResults}" VerticalOptions="FillAndExpand">
                 <CollectionView.ItemTemplate>
                     <DataTemplate>
                         <controls:QueryResultView CloseRequested="CloseResultView" />

Xamarin.Neo4j/Xamarin.Neo4j/Xamarin.Neo4j/Pages/SessionPage.xaml.cs

@@ -1,9 +1,4 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
 using Xamarin.Forms;
 using Xamarin.Forms.Xaml;
 using Xamarin.Neo4j.Models;
@@ -15,6 +10,8 @@ namespace Xamarin.Neo4j.Pages
     [XamlCompilation(XamlCompilationOptions.Compile)]
     public partial class SessionPage : ContentPage
     {
+        private bool _canCompleteEntry = true;
+        
         private SessionViewModel ViewModel => (SessionViewModel) BindingContext;
 
         public SessionPage(Neo4jConnectionString connectionString, string initialQuery = null)
@@ -38,5 +35,10 @@ namespace Xamarin.Neo4j.Pages
         {
             ViewModel.DeleteQueryResult(e.Data);
         }
+
+        private void ExecuteQuery(object sender, EventArgs e)
+        {
+            ViewModel.Commands["ExecuteQuery"].Execute(null);
+        }
     }
 }

Xamarin.Neo4j/Xamarin.Neo4j/Xamarin.Neo4j/Services/Neo4jService.cs

@@ -16,6 +16,7 @@ using Neo4jClient.Cypher;
 using Xamarin.Forms;
 using Xamarin.Neo4j.Models;
 using Xamarin.Neo4j.Services;
+using Xamarin.Neo4j.Utilities;
 
 [assembly: Dependency(typeof(Neo4jService))]
 
@@ -151,6 +152,7 @@ namespace Xamarin.Neo4j.Services
                     Success = true,
                     CanDisplayGraph = canDisplayGraph,
                     Query = query,
+                    DisplayQuery = QueryHelper.TransformQuery(query),
                     ConnectionString = connectionString,
                     Results = results
                 };

Xamarin.Neo4j/Xamarin.Neo4j/Xamarin.Neo4j/Utilities/QueryHelper.cs

@@ -0,0 +1,66 @@
+//
+// QueryHelper.cs
+//
+// Trevi Awater
+// 02-03-2024
+//
+// © Xamarin.Neo4j
+//
+
+using System;
+using System.Collections.Generic;
+using System.Text.RegularExpressions;
+
+namespace Xamarin.Neo4j.Utilities
+{
+    public static class QueryHelper
+    {
+        public static string TransformQuery(string query)
+        {
+            // Check if there is a return statement, if not return the original query
+            if (query.IndexOf("RETURN ", StringComparison.OrdinalIgnoreCase) <= 0) 
+                return query;
+            
+            // This pattern is designed to match relationships with and without labels.
+            // It captures the relationship direction and type, but not the existing label (if any).
+            const string pattern = @"-\[:?(\w+)?\]->";
+            var matches = Regex.Matches(query, pattern);
+    
+            // Keep track of unique relationships to ensure they are returned
+            var relationships = new List<string>();
+            var relationshipCounter = 1;
+    
+            var transformedQuery = query;
+    
+            foreach (Match match in matches)
+            {
+                var newLabel = $"display_variable_{relationshipCounter++}"; // Generate a unique label for the relationship
+    
+                // Replace the first occurrence of this match in the query with the new labeled version
+                var oldPattern = match.Value;
+                var newPattern = oldPattern.Replace("[:", $"[{newLabel}:").Replace("]->", "]->");
+                var idx = transformedQuery.IndexOf(oldPattern);
+                
+                if (idx != -1)
+                {
+                    transformedQuery = transformedQuery.Substring(0, idx) + newPattern + transformedQuery.Substring(idx + oldPattern.Length);
+                }
+    
+                relationships.Add(newLabel);
+            }
+    
+            // Construct the new RETURN clause with the added relationships.
+            if (relationships.Count > 0)
+            {
+                // Assuming there's always a RETURN statement to append to.
+                var returnIndex = transformedQuery.LastIndexOf("RETURN ", StringComparison.OrdinalIgnoreCase);
+                var returnClause = transformedQuery.Substring(returnIndex + "RETURN ".Length);
+                var newReturnClause = string.Join(", ", relationships) + ", " + returnClause;
+                
+                transformedQuery = transformedQuery.Substring(0, returnIndex) + "RETURN " + newReturnClause;
+            }
+    
+            return transformedQuery;
+        }
+    }
+}