Added DialogService to manage dialog z-indexes

1 files changed, 39 insertions, 0 deletions

diff --git a/Services/DialogService.cs b/Services/DialogService.cs
new file mode 100644
index 0000000..5967d95
--- /dev/null
+++ b/Services/DialogService.cs
@@ -0,0 +1,39 @@
+using HyperBooru.Pages.Component;
+
+namespace HyperBooru.Services;
+
+public interface IDialogService {
+    public void Register(Dialog dialog);
+    public void Unregister(Dialog dialog);
+    public void BumpZIndex(Dialog dialog);
+}
+
+public class DialogService : IDialogService {
+    private const int MinZLevel = 900;
+
+    private List<Dialog> dialogs = new();
+
+    public void Register(Dialog dialog) {
+        if(!dialogs.Contains(dialog))
+            dialogs.Add(dialog);
+
+        dialog.ZIndex = dialogs.Count() - 1 + MinZLevel;
+    }
+
+    public void Unregister(Dialog dialog) {
+        dialogs.Remove(dialog);
+        for(int i = 0; i < dialogs.Count(); i++)
+            dialogs[i].ZIndex = i + MinZLevel;
+    }
+
+    public void BumpZIndex(Dialog dialog) {
+        if(!dialogs.Contains(dialog))
+            return;
+
+        dialogs.Remove(dialog);
+        dialogs.Add(dialog);
+
+        for(int i = 0; i < dialogs.Count(); i++)
+            dialogs[i].ZIndex = i + MinZLevel;
+    }
+}
\ No newline at end of file