From: Olaf Wintermann <olaf.wintermann@gmail.com>
Date: Wed, 6 Aug 2025 18:39:32 +0000 (+0200)
Subject: add oneshot event handler
X-Git-Url: https://uap-core.de/gitweb/?a=commitdiff_plain;h=cbeaf3ee026755cf0016c5ffb6e853d212edd15e;p=rssreader.git

add oneshot event handler
---

diff --git a/ui-java/src/main/java/de/unixwork/ui/EventWrapper.java b/ui-java/src/main/java/de/unixwork/ui/EventWrapper.java
index e6310ba..4d3af33 100644
--- a/ui-java/src/main/java/de/unixwork/ui/EventWrapper.java
+++ b/ui-java/src/main/java/de/unixwork/ui/EventWrapper.java
@@ -29,9 +29,15 @@ public class EventWrapper {
 
     public EventWrapper(EventHandler handler, boolean oneshot) {
         Toolkit toolkit = Toolkit.getInstance();
-        callback = oneshot ? toolkit.oneshotEventHandler : toolkit.globalEventHandler;
-        long index = toolkit.addEventHandler(handler);
-        userdata = MemorySegment.ofAddress(index);
+        if(oneshot) {
+            callback = toolkit.oneshotEventHandler;
+            long index = toolkit.addOneshotEventHandler(handler);
+            userdata = MemorySegment.ofAddress(index);
+        } else {
+            callback = toolkit.eventHandler;
+            long index = toolkit.addEventHandler(handler);
+            userdata = MemorySegment.ofAddress(index);
+        }
     }
 
     public EventWrapper(EventHandler handler) {
@@ -69,6 +75,12 @@ public class EventWrapper {
     }
 
     public static void oneshotEventHandler(MemorySegment event, MemorySegment userdata) {
-
+        long eventHandlerIndex = userdata.address();
+        Event e = new Event(event);
+        UiObject obj = e.getObject();
+        EventHandler handler = Toolkit.getInstance().removeOneshotEventHandler(eventHandlerIndex);
+        if(handler != null) {
+            handler.callback(e);
+        } // else: error?
     }
 }
diff --git a/ui-java/src/main/java/de/unixwork/ui/Toolkit.java b/ui-java/src/main/java/de/unixwork/ui/Toolkit.java
index 21c5342..9718176 100644
--- a/ui-java/src/main/java/de/unixwork/ui/Toolkit.java
+++ b/ui-java/src/main/java/de/unixwork/ui/Toolkit.java
@@ -437,6 +437,16 @@ public class Toolkit {
         return eventHandlers.get(index);
     }
 
+    public long addOneshotEventHandler(EventHandler handler) {
+        long index = onshotEventHandlers.size();
+        onshotEventHandlers.put(index, handler);
+        return index;
+    }
+
+    public EventHandler removeOneshotEventHandler(long index) {
+        return onshotEventHandlers.remove(index);
+    }
+
     public Context getContext(long address) {
         return contexts.get(address);
     }