From 127aab5e39a094981de197bd2a8c09b608fb4bdb Mon Sep 17 00:00:00 2001
From: Daniel Ratiu <ratiu@fortiss.org>
Date: Thu, 20 Oct 2011 14:37:03 +0000
Subject: [PATCH] small code cleanings refs 236
---
.../ui/util/ModelElementLabelProvider.java | 3 +-
.../kernel/ui/util/SelectionUtils.java | 74 +++++++++++++++++++
2 files changed, 76 insertions(+), 1 deletion(-)
create mode 100644 org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/util/SelectionUtils.java
diff --git a/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/util/ModelElementLabelProvider.java b/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/util/ModelElementLabelProvider.java
index 14bf57e7b..96c0225d1 100644
--- a/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/util/ModelElementLabelProvider.java
+++ b/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/util/ModelElementLabelProvider.java
@@ -24,11 +24,12 @@ import org.fortiss.tooling.kernel.ui.extension.IModelElementHandler;
import org.fortiss.tooling.kernel.ui.service.IModelElementHandlerService;
/**
+ * Label provider for model elements that have corresponding handlers.
*
* @author mou
* @author $Author$
* @version $Rev$
- * @ConQAT.Rating RED Hash:
+ * @ConQAT.Rating GREEN Hash: 7C9C1135B33D4F3D58BEB826E63AB70A
*/
public class ModelElementLabelProvider extends LabelProvider {
/** {@inheritDoc} */
diff --git a/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/util/SelectionUtils.java b/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/util/SelectionUtils.java
new file mode 100644
index 000000000..76b950055
--- /dev/null
+++ b/org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/util/SelectionUtils.java
@@ -0,0 +1,74 @@
+/*--------------------------------------------------------------------------+
+$Id: codetemplates.xml 1 2011-01-01 00:00:01Z hoelzl $
+| |
+| Copyright 2011 ForTISS GmbH |
+| |
+| Licensed under the Apache License, Version 2.0 (the "License"); |
+| you may not use this file except in compliance with the License. |
+| You may obtain a copy of the License at |
+| |
+| http://www.apache.org/licenses/LICENSE-2.0 |
+| |
+| Unless required by applicable law or agreed to in writing, software |
+| distributed under the License is distributed on an "AS IS" BASIS, |
+| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
+| See the License for the specific language governing permissions and |
+| limitations under the License. |
++--------------------------------------------------------------------------*/
+package org.fortiss.tooling.kernel.ui.util;
+
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.ISelectionProvider;
+import org.eclipse.jface.viewers.IStructuredSelection;
+
+/**
+ * Utility methods for dealing with selections.
+ *
+ * This class contains slight improvements with respect to
+ * {@link org.conqat.ide.commons.ui.selection.SelectionUtils}.
+ *
+ * @author ratiu
+ * @author $Author: hoelzl $
+ * @version $Rev: 18709 $
+ * @ConQAT.Rating YELLOW Hash: 9641C2CB35796514DC1145D3DA0570B5
+ */
+public class SelectionUtils {
+
+ /**
+ * For a selection provider object get the selected object, for simple
+ * selections a cast is performed to the desired type; for a structured
+ * selection returns the first element or <code>null</code> if the selection
+ * is empty. This return <code>null</code> if the provided selection is null
+ * or the element is not of the required type.
+ */
+ public static <T> T checkAndPickFirst(ISelectionProvider selectionProvider,
+ Class<T> type) {
+ return checkAndPickFirst(selectionProvider.getSelection(), type);
+ }
+
+ /**
+ * For simple selections a cast is performed to the desired type. For a
+ * structured selection returns the first element or <code>null</code> if
+ * the selection is empty. This return <code>null</code> if the provided
+ * selection is null or the element is not of the required type.
+ */
+ @SuppressWarnings("unchecked")
+ public static <T> T checkAndPickFirst(ISelection selection, Class<T> type) {
+ Object selectedElement;
+
+ if (selection == null || selection.isEmpty())
+ return null;
+
+ if (!(selection instanceof IStructuredSelection)) {
+ selectedElement = selection;
+ } else {
+ IStructuredSelection structuredSelection = (IStructuredSelection) selection;
+ selectedElement = structuredSelection.getFirstElement();
+ }
+
+ if (!type.isInstance(selectedElement)) {
+ return null;
+ }
+ return (T) selectedElement;
+ }
+}
--
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