From 79d0f9a45d36656051a77a7b0837aa0318f81ee5 Mon Sep 17 00:00:00 2001
From: Normand Briere <nbriere@noware.ca>
Date: Sun, 09 Jun 2019 11:23:18 -0400
Subject: [PATCH] Undo/redo

---
 GroupEditor.java |   32 ++++++++++++++++++++++++++------
 1 files changed, 26 insertions(+), 6 deletions(-)

diff --git a/GroupEditor.java b/GroupEditor.java
index acdf1fc..5d4b4bf 100644
--- a/GroupEditor.java
+++ b/GroupEditor.java
@@ -154,6 +154,11 @@
 		oe.menuBar.add(menu = new Menu("Edit"));
 		//editItem = menu.add(new MenuItem("Edit"));
 		//editItem.addActionListener(this);
+		undoItem = menu.add(new MenuItem("Undo"));
+		undoItem.addActionListener(this);
+		redoItem = menu.add(new MenuItem("Redo"));
+		redoItem.addActionListener(this);
+		menu.add("-");
 		duplicateItem = menu.add(new MenuItem("Duplicate"));
 		duplicateItem.addActionListener(this);
 		cloneItem = menu.add(new MenuItem("Clone"));
@@ -197,7 +202,7 @@
         //zBufferItem.addActionListener(this);
         //cameraMenu.add(normalLensItem = new MenuItem("Normal Lens"));
         //normalLensItem.addActionListener(this);
-        cameraMenu.add(revertCameraItem = new MenuItem("Revert Camera"));
+        cameraMenu.add(revertCameraItem = new MenuItem("Restore Camera"));
         revertCameraItem.addActionListener(this);
         
         cameraMenu.add(toggleFullScreenItem = new CheckboxMenuItem("Full Screen"));
@@ -261,7 +266,7 @@
 //		animationItem.addItemListener(this);
 //                    animationItem.setState(CameraPane.ANIMATION);
         cameraMenu.add("-");
-        cameraMenu.add(editCameraItem = new MenuItem("Freeze Camera"));
+        cameraMenu.add(editCameraItem = new MenuItem("Save Camera"));
         editCameraItem.addActionListener(this);
         
         if (Globals.ADVANCED)
@@ -2004,6 +2009,14 @@
 		if (source == cutItem || source == clearButton)
 		{
 			loadClipboard(true);
+		} else
+		if (source == undoItem)
+		{
+			Undo();
+		} else
+		if (source == redoItem)
+		{
+			Redo();
 		} else
 		if (source == duplicateItem)
 		{
@@ -4297,14 +4310,19 @@
 			
                         objEditor.SetText(); // jan 2014
                         
-			if (flashIt && !Globals.isLIVE() && tps != null && tps.length > 0 && !(((Object3D) tps[0].getLastPathComponent()) instanceof Camera))
+                        Object3D object = (Object3D) tps[0].getLastPathComponent();
+                        
+			if (flashIt && !Globals.isLIVE() && tps != null && tps.length > 0 && !(object instanceof Camera))
 				CameraPane.flash = true;
                         
-			if (tps != null && tps.length > 0 && ((Object3D) tps[0].getLastPathComponent()) instanceof Camera)
+			if (tps != null && tps.length > 0 && object instanceof Camera)
                             // a camera
                         {
-                            CameraPane.camerachangeframe = 0; // don't refuse it
-                            Globals.theRenderer.SetCamera((Camera) tps[0].getLastPathComponent());
+                            if (object != Globals.theRenderer.LightCamera())
+                            {
+                                CameraPane.camerachangeframe = 0; // don't refuse it
+                                Globals.theRenderer.SetCamera((Camera) tps[0].getLastPathComponent());
+                            }
                          //   Globals.theRenderer.renderCamera = Globals.theRenderer.manipCamera;
                          //   Globals.theRenderer.eyeCamera = Globals.theRenderer.manipCamera;
                         }
@@ -5145,6 +5163,8 @@
 	private MenuItem lookFromItem;
 	private MenuItem switchItem;
 	private MenuItem cutItem;
+	private MenuItem undoItem;
+	private MenuItem redoItem;
 	private MenuItem duplicateItem;
 	private MenuItem cloneItem;
 	private MenuItem cloneSupportItem;

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