Kernel: tree editors receive cancel event when escape was released.

Issue-Ref: 3961
Issue-Url: https://af3-developer.fortiss.org/issues/3961


Signed-off-by: Florian Hoelzl <hoelzl@fortiss.org>

org.fortiss.tooling.common.ui/src/org/fortiss/tooling/common/ui/javafx/control/treetableview/.ratings

 DynamicTreeContentProviderBase.java 6760a6dc5721175b1dada8f30fd9da05f7bcc4b3 GREEN
 DynamicTreeItem.java 75dc5534b119ffdb3c10a65810c2a0f330b7955e GREEN
-DynamicTreeTableUIProviderBase.java 4fbc6171f3e95900678d7c2baea680e91fcc5be1 YELLOW
+DynamicTreeTableUIProviderBase.java f4fd20e3d267bc39a33a3bbb18416312779ea886 YELLOW
 DynamicTreeTableViewer.java 431ac62cbd6ad7df25852fce1b5a62a05ba510e3 GREEN
 DynamicTreeUIProviderBase.java e9b68607683de279d0cb8712a28dc131c5c33ece GREEN
 DynamicTreeViewer.java e9f19d16a2a7e5a1b03b8a8b543453ac7eb6a051 GREEN

org.fortiss.tooling.common.ui/src/org/fortiss/tooling/common/ui/javafx/control/treetableview/DynamicTreeTableUIProviderBase.java

@@ -167,10 +167,14 @@ public abstract class DynamicTreeTableUIProviderBase<T> {
 		/** {@inheritDoc} */
 		@Override
 		public void startEdit() {
+			if(!isEditable() || !getTreeTableView().isEditable() ||
+					!getTableColumn().isEditable()) {
+				return;
+			}
 			super.startEdit();
 			// the following code uses implementation details of
 			// CellUtils.startEdit(...) and CellUtils.createTextfield(...)
-			TextField tf = (TextField)getGraphic(); // CellUtil:228
+			TextField tf = (TextField)getGraphic(); // CellUtils:228
 			tf.setOnKeyReleased(t -> {
 				DynamicTreeTableUIProviderBase<T>.MyTextFieldTreeTableCell mythis =
 						MyTextFieldTreeTableCell.this;
@@ -183,6 +187,26 @@ public abstract class DynamicTreeTableUIProviderBase<T> {
 				}
 			});
 		}
+
+		/** {@inheritDoc} */
+		@Override
+		public void cancelEdit() {
+			super.cancelEdit();
+			T item = getTreeTableRow().getItem();
+			validateOnCancelEdit(columnIndex, item);
+		}
+	}
+
+	/**
+	 * Called when editing a cell was canceled.
+	 * 
+	 * @param colIndex
+	 *            the index of the column
+	 * @param item
+	 *            the row item
+	 */
+	public void validateOnCancelEdit(int colIndex, T item) {
+		// nothing to do
 	}
 
 	/**