From 3cb713298a58151db28953cb4dc285509c58685e Mon Sep 17 00:00:00 2001
From: Harald Wolff <haraldwolff@homework.praeziso.lupus>
Date: Fri, 1 Apr 2016 22:42:18 +0200
Subject: [PATCH] org.hwo.interactiveobjects

---
 .../interactiveobjects/IObjectEditorUI.java   |  5 ++
 .../InteractiveObjectHelper.java              |  6 +-
 .../interactiveobjects/ObjectEditorUI.java    | 19 ++++++
 .../ObjectEditorUIHelper.java                 | 60 +++++++++++++++++++
 4 files changed, 88 insertions(+), 2 deletions(-)
 create mode 100644 src/org/hwo/interactiveobjects/IObjectEditorUI.java
 create mode 100644 src/org/hwo/interactiveobjects/ObjectEditorUI.java
 create mode 100644 src/org/hwo/interactiveobjects/ObjectEditorUIHelper.java

diff --git a/src/org/hwo/interactiveobjects/IObjectEditorUI.java b/src/org/hwo/interactiveobjects/IObjectEditorUI.java
new file mode 100644
index 0000000..dd15747
--- /dev/null
+++ b/src/org/hwo/interactiveobjects/IObjectEditorUI.java
@@ -0,0 +1,5 @@
+package org.hwo.interactiveobjects;
+
+public interface IObjectEditorUI {
+	public boolean editObject(Object o);
+}
diff --git a/src/org/hwo/interactiveobjects/InteractiveObjectHelper.java b/src/org/hwo/interactiveobjects/InteractiveObjectHelper.java
index f43832a..cea62a9 100644
--- a/src/org/hwo/interactiveobjects/InteractiveObjectHelper.java
+++ b/src/org/hwo/interactiveobjects/InteractiveObjectHelper.java
@@ -56,8 +56,10 @@ public class InteractiveObjectHelper {
 	{
 		if (o != null){
 			IInteractiveObjectEditor editor = getEditor(o);
-			editor.setInteractiveObject(o);
-			editor.setVisible(true);
+			if (editor != null){
+				editor.setInteractiveObject(o);
+				editor.setVisible(true);
+			}
 		}
 	}
 	
diff --git a/src/org/hwo/interactiveobjects/ObjectEditorUI.java b/src/org/hwo/interactiveobjects/ObjectEditorUI.java
new file mode 100644
index 0000000..f4349f5
--- /dev/null
+++ b/src/org/hwo/interactiveobjects/ObjectEditorUI.java
@@ -0,0 +1,19 @@
+package org.hwo.interactiveobjects;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+@Retention(RetentionPolicy.RUNTIME)
+public @interface ObjectEditorUI {
+	public Class<? extends IObjectEditorUI> editor();
+}
+
+/*
+@Retention(RetentionPolicy.RUNTIME)
+public @interface InteractiveObject {
+	
+	public boolean			keywordSearch() default false; 
+	
+	public Class<? extends IInteractiveObjectEditor>	editor();
+	
+}*/
diff --git a/src/org/hwo/interactiveobjects/ObjectEditorUIHelper.java b/src/org/hwo/interactiveobjects/ObjectEditorUIHelper.java
new file mode 100644
index 0000000..75e71cb
--- /dev/null
+++ b/src/org/hwo/interactiveobjects/ObjectEditorUIHelper.java
@@ -0,0 +1,60 @@
+package org.hwo.interactiveobjects;
+
+import java.util.Hashtable;
+
+public class ObjectEditorUIHelper {
+
+	private static Hashtable<Class<?>, IObjectEditorUI> hashEditors = new Hashtable<Class<?>, IObjectEditorUI>();
+	
+	private static ObjectEditorUI getObjectEditorUI(Class<?> clazz)
+	{					
+		ObjectEditorUI editor = clazz.getAnnotation(ObjectEditorUI.class);
+		if (editor != null){		
+			return editor;
+		}
+		
+		if (clazz.getSuperclass() != null)
+			return getObjectEditorUI(clazz.getSuperclass());
+		
+		return null;
+	}
+	
+	private static ObjectEditorUI getObjectEditorUI(Object item)
+	{
+		Class<?> clazz = item.getClass();
+		return getObjectEditorUI(clazz);
+	}
+	
+	public static IObjectEditorUI editor(Object item) throws NoClassDefFoundError{
+		IObjectEditorUI editor;
+		
+		if (hashEditors.containsKey(item.getClass())){
+			return hashEditors.get(item.getClass());
+		}
+		
+		ObjectEditorUI editorUI = getObjectEditorUI(item.getClass());
+		if (editorUI!=null){
+			try {
+				editor = editorUI.editor().newInstance();
+				hashEditors.put( item.getClass(), editor);
+				return editor;
+			} catch (InstantiationException e) {
+				e.printStackTrace();
+			} catch (IllegalAccessException e) {
+				e.printStackTrace();
+			}
+		}
+		
+		throw new NoClassDefFoundError(String.format("%s has no ObjectEditorUI", item));
+	}
+	
+	public static boolean edit(Object item) throws NoClassDefFoundError {
+		IObjectEditorUI editor = editor(item);
+		return editor.editObject(item);
+	}
+	
+	public static boolean isEditable(Class<?> clazz){
+		return getObjectEditorUI(clazz)!=null;
+	}
+	
+}