Misc. NUI editor fixes

engine/src/main/java/org/terasology/rendering/nui/contextMenu/ContextMenuScreen.java

@@ -17,6 +17,8 @@
 
 import com.google.common.base.Preconditions;
 import com.google.common.collect.Lists;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.terasology.assets.ResourceUrn;
 import org.terasology.math.geom.Rect2i;
 import org.terasology.math.geom.Vector2i;
@@ -37,6 +39,7 @@
  */
 public class ContextMenuScreen extends CoreScreenLayer {
 
+    private Logger logger = LoggerFactory.getLogger(ContextMenuScreen.class);
     public static final ResourceUrn ASSET_URI = new ResourceUrn("engine:contextMenuScreen");
 
     /**
@@ -87,7 +90,6 @@ public void onClosed() {
     @Override
     public void onDraw(Canvas canvas) {
         canvas.addInteractionRegion(mainListener);
-
         Vector2i currentPosition = null;
         int currentWidth = 0;
         for (ContextMenuLevel level : menuLevels) {
@@ -100,6 +102,14 @@ public void onDraw(Canvas canvas) {
                 UIWidget menuWidget = level.getMenuWidget();
                 Rect2i region = Rect2i.createFromMinAndSize(currentPosition,
                     canvas.calculatePreferredSize(menuWidget));
+                double percentageThreshold = 0.9;
+                if (region.maxY() > canvas.getRegion().height() * percentageThreshold) {
+                    region = Rect2i.createFromMinAndMax(region.minX(),
+                        region.minY() - (region.maxY() - canvas.getRegion().height()) -
+                        (int) (canvas.getRegion().height() * (1 - percentageThreshold)),
+                        region.maxX(),
+                        canvas.getRegion().height());
+                }
                 currentWidth = canvas.calculatePreferredSize(menuWidget).getX() - 8;
                 canvas.drawWidget(level.getMenuWidget(), region);
             }

engine/src/main/java/org/terasology/rendering/nui/editor/NUIEditorContextMenuBuilder.java

@@ -180,7 +180,9 @@ private void createChild(String name, JsonTree node, Field field, Class clazz)
             }
         }
 
-        node.addChild(childValue);
+        JsonTree child = new JsonTree(childValue);
+        child.setExpanded(true);
+        node.addChild(child);
     }
 
     private boolean isWidget(Field field) throws IllegalAccessException {
@@ -230,6 +232,11 @@ private Object getFieldValue(Field field, Class clazz) throws IllegalAccessExcep
             } else {
                 value = field.get(clazz.newInstance());
             }
+
+            if (value != null && value instanceof Boolean) {
+                value = !(Boolean) value;
+            }
+
             return value != null ? value :
                 field.getType().newInstance();
         }

engine/src/main/java/org/terasology/rendering/nui/editor/NUIEditorScreen.java

@@ -170,7 +170,7 @@ public void set(String value) {
         }
 
         editor.subscribeTreeViewUpdate(() -> {
-            JsonTree rootNode = (JsonTree) editor.getModel().getNode(0).getRoot();
+            JsonTree rootNode = (JsonTree) editor.getModel().getNode(0).getRoot().copy();
             addToHistory(rootNode);
             setPreviewWidget(rootNode);
             updateConfig();

engine/src/main/java/org/terasology/rendering/nui/widgets/UITreeView.java

@@ -224,20 +224,24 @@ public boolean onKeyEvent(NUIKeyEvent event) {
 
             if (id == Keyboard.KeyId.UP || id == Keyboard.KeyId.DOWN) {
                 // Up/Down: change a node's position within the parent node.
-                moveSelected(id);
-                return true;
+                return moveSelected(id);
             } else if (id == Keyboard.KeyId.DELETE) {
                 // Delete: remove a node (and all its' children).
-                removeSelected();
-                return true;
+                return removeSelected();
             } else if (ctrlDown && id == Keyboard.KeyId.C) {
                 // Ctrl+C: copy a selected node.
-                copy(model.get().getNode(state.getSelectedIndex()));
-                return true;
+                if (state.getSelectedIndex() != null) {
+                    copy(model.get().getNode(state.getSelectedIndex()));
+                    return true;
+                }
+                return false;
             } else if (ctrlDown && id == Keyboard.KeyId.V) {
                 // Ctrl+V: paste the copied node as a child of the currently selected node.
-                paste(model.get().getNode(state.getSelectedIndex()));
-                return true;
+                if (state.getSelectedIndex() != null) {
+                    paste(model.get().getNode(state.getSelectedIndex()));
+                    return true;
+                }
+                return false;
             } else {
                 return false;
             }
@@ -413,7 +417,7 @@ private void updateListeners() {
         }
     }
 
-    private void moveSelected(int keyId) {
+    private boolean moveSelected(int keyId) {
         if (state.getSelectedIndex() != null) {
             Tree<T> selectedNode = model.get().getNode(state.getSelectedIndex());
             Tree<T> parent = selectedNode.getParent();
@@ -443,16 +447,22 @@ private void moveSelected(int keyId) {
                     fireUpdateListeners();
                 }
             }
+
+            return true;
         }
+
+        return false;
     }
 
-    private void removeSelected() {
+    private boolean removeSelected() {
         if (state.getSelectedIndex() != null) {
             model.get().removeNode(state.getSelectedIndex());
             state.setSelectedIndex(null);
 
             fireUpdateListeners();
+            return true;
         }
+        return false;
     }
 
     private boolean onNodeClick(int index, NUIMouseClickEvent event) {

engine/src/main/java/org/terasology/rendering/nui/widgets/treeView/JsonTree.java

@@ -98,7 +98,7 @@ public JsonTree getSiblingWithKey(String key) {
 
     @Override
     public Tree<JsonTreeValue> copy() {
-        Tree<JsonTreeValue> copy = new JsonTree(this.value);
+        Tree<JsonTreeValue> copy = new JsonTree(this.value.copy());
         copy.setExpanded(this.isExpanded());
 
         for (Tree<JsonTreeValue> child : this.children) {

engine/src/main/java/org/terasology/rendering/nui/widgets/treeView/JsonTreeValue.java

@@ -124,4 +124,8 @@ public String toString() {
             return key != null ? key : NULL_STRING;
         }
     }
+
+    public JsonTreeValue copy() {
+        return new JsonTreeValue(key, value, type);
+    }
 }

engine/src/main/java/org/terasology/rendering/nui/widgets/treeView/TreeModel.java

@@ -75,7 +75,7 @@ public Tree<T> getNode(int index) {
      * @return The node with the given value.
      */
     public Tree<T> getNodeByValue(T value) {
-        Optional<Tree<T>> node = this.nodes.stream().filter(n -> n.getValue().equals(value)).findFirst();
+        Optional<Tree<T>> node = this.nodes.stream().filter(n -> n.getValue() == value).findFirst();
         return node.isPresent() ? node.get() : null;
     }