GP-5881 Corrected regression error with Structure editor change

Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/compositeeditor/CompEditorModel.java

@@ -55,6 +55,18 @@ public abstract class CompEditorModel<T extends Composite> extends CompositeEdit
 	 */
 	@Override
 	public void load(T dataType) {
+
+		if (dataType.isDeleted()) {
+			// This can occur when mayny events get lumped together and a change event triggers
+			// a delayed reload prior to datatype removal and its event
+			if (dataType == originalComposite) {
+				// Re-route to dataTypeRemoved callback after restoring listener.
+				originalDTM.addDataTypeManagerListener(this);
+				dataTypeRemoved(originalDTM, originalDataTypePath);
+			}
+			return;
+		}
+
 		super.load(dataType);
 		fixSelection();
 		selectionChanged();
@@ -1363,6 +1375,8 @@ public abstract class CompEditorModel<T extends Composite> extends CompositeEdit
 			}
 
 			reloadFromView();
+
+			setStatus("The original " + getTypeName() + " has been deleted");
 		}
 		finally {
 			consideringReplacedDataType = false;

Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/compositeeditor/CompositeEditorModel.java

@@ -140,6 +140,17 @@ abstract public class CompositeEditorModel<T extends Composite> extends Composit
 				"Datatype " + dataType.getName() + " doesn't have a data type manager specified.");
 		}
 
+		if (dataType.isDeleted()) {
+			// This can occur when mayny events get lumped together and a change event triggers
+			// a delayed reload prior to datatype removal and its event
+			if (dataType == originalComposite) {
+				// Re-route to dataTypeRemoved callback after restoring listener.
+				originalDTM.addDataTypeManagerListener(this);
+				dataTypeRemoved(originalDTM, originalDataTypePath);
+			}
+			return;
+		}
+
 		long lastCompositeId = originalCompositeId;
 
 		if (isEditingField()) {

Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/compositeeditor/StructureEditorProvider.java

@@ -38,6 +38,10 @@ public class StructureEditorProvider
 	public StructureEditorProvider(Plugin plugin, Structure structureDataType,
 			boolean showHexNumbers) {
 		super(plugin);
+		if (structureDataType.isDeleted()) {
+			throw new IllegalArgumentException(
+				"Structure has been deleted: " + structureDataType.getPathName());
+		}
 		setIcon(STRUCTURE_EDITOR_ICON);
 		editorModel = new StructureEditorModel(this, showHexNumbers);
 		editorModel.load(structureDataType);

Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/compositeeditor/UnionEditorProvider.java

@@ -31,6 +31,10 @@ public class UnionEditorProvider extends CompositeEditorProvider<Union, UnionEdi
 
 	public UnionEditorProvider(Plugin plugin, Union unionDataType, boolean showInHex) {
 		super(plugin);
+		if (unionDataType.isDeleted()) {
+			throw new IllegalArgumentException(
+				"Union has been deleted: " + unionDataType.getPathName());
+		}
 		setIcon(UNION_EDITOR_ICON);
 		editorModel = new UnionEditorModel(this, showInHex);
 		editorModel.load(unionDataType);

Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/compositeeditor/StructureEditorNotifiedTest.java

@@ -94,14 +94,12 @@ public class StructureEditorNotifiedTest extends AbstractStructureEditorTest {
 
 		DialogComponentProvider dlg = waitForDialogComponent("Close Structure Editor?");
 		pressButton(dlg.getComponent(), "No");
-
 		waitForSwing();
 
 		// complexStructure* gets removed and becomes BadDataType in this editor.
 		assertEquals(num, model.getNumComponents());
 		assertEquals(len, model.getLength());
-		assertTrue(BadDataType.dataType.isEquivalent(getDataType(10)));
-		assertEquals("Type 'complexStructure *' was deleted", getComment(10));
+		assertEquals("The original Structure has been deleted", model.getStatus());
 		assertEquals(4, getLength(10));
 	}
 
@@ -421,6 +419,7 @@ public class StructureEditorNotifiedTest extends AbstractStructureEditorTest {
 		pressButtonByText(dialog, "Yes");
 		dialog.dispose();
 		dialog = null;
+		waitForSwing();
 
 		assertEquals(((Structure) origCopy).getNumComponents(), model.getNumComponents());
 		assertTrue(origCopy.isEquivalent(model.viewComposite));
@@ -446,6 +445,7 @@ public class StructureEditorNotifiedTest extends AbstractStructureEditorTest {
 		pressButtonByText(dialog, "No");
 		dialog.dispose();
 		dialog = null;
+		waitForSwing();
 
 		assertEquals(((Structure) viewCopy).getNumComponents(), model.getNumComponents());
 		assertTrue(viewCopy.isEquivalent(model.viewComposite));

Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/compositeeditor/UnionEditorNotifiedTest.java

@@ -250,6 +250,7 @@ public class UnionEditorNotifiedTest extends AbstractUnionEditorTest {
 		pressButtonByText(dialog, "No");
 		dialog.dispose();
 		dialog = null;
+		waitForSwing();
 
 		assertEquals(((Union) viewCopy).getNumComponents(), model.getNumComponents());
 		assertTrue(viewCopy.isEquivalent(model.viewComposite));