1 files changed, 53 insertions, 0 deletions
diff --git a/src/Java/binnie/craftgui/events/EventHandler.java b/src/Java/binnie/craftgui/events/EventHandler.java
new file mode 100644
index 0000000000..9d2e5d2ad3
--- /dev/null
+++ b/src/Java/binnie/craftgui/events/EventHandler.java
@@ -0,0 +1,53 @@
+package binnie.craftgui.events;
+
+import binnie.craftgui.core.IWidget;
+import java.util.List;
+
+public abstract class EventHandler<E extends Event>
+{
+  Class<E> eventClass;
+  Origin origin = Origin.Any;
+  IWidget relative = null;
+  
+  public EventHandler(Class<E> eventClass)
+  {
+    this.eventClass = eventClass;
+  }
+  
+  public EventHandler setOrigin(Origin origin, IWidget relative)
+  {
+    this.origin = origin;
+    this.relative = relative;
+    return this;
+  }
+  
+  public abstract void onEvent(E paramE);
+  
+  public final boolean handles(Event e)
+  {
+    return (this.eventClass.isInstance(e)) && (this.origin.isOrigin(e.getOrigin(), this.relative));
+  }
+  
+  public static enum Origin
+  {
+    Any,  Self,  Parent,  DirectChild;
+    
+    private Origin() {}
+    
+    public boolean isOrigin(IWidget origin, IWidget test)
+    {
+      switch (EventHandler.1.$SwitchMap$binnie$craftgui$events$EventHandler$Origin[ordinal()])
+      {
+      case 1: 
+        return true;
+      case 2: 
+        return test.getWidgets().contains(origin);
+      case 3: 
+        return test.getParent() == origin;
+      case 4: 
+        return test == origin;
+      }
+      return false;
+    }
+  }
+}