Bug 521018 - [api] Provide helpers to use lambda expressions for

CTabFolder2Listener 

Add helper methods.

Change-Id: I976cb4b00cdda4c49750cceca0116944475085d4
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>

2 files changed, 94 insertions, 2 deletions

diff --git a/bundles/org.eclipse.swt/Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CTabFolder2Adapter.java b/bundles/org.eclipse.swt/Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CTabFolder2Adapter.java
index 5cabe06049..d474e041b2 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CTabFolder2Adapter.java
+++ b/bundles/org.eclipse.swt/Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CTabFolder2Adapter.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2016 IBM Corporation and others.
+ * Copyright (c) 2000, 2017 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -18,6 +18,11 @@ package org.eclipse.swt.custom;
  * extend this class and override only the methods which they are
  * interested in.
  * </p>
+ * <p>
+ * An alternative to this class are the static helper methods in
+ * {@link CTabFolder2Listener},
+ * which accept a lambda expression or a method reference that implements the event consumer.
+ * </p>
  *
  * @see CTabFolder2Listener
  * @see CTabFolderEvent
diff --git a/bundles/org.eclipse.swt/Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CTabFolder2Listener.java b/bundles/org.eclipse.swt/Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CTabFolder2Listener.java
index e2796def11..928bda967f 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CTabFolder2Listener.java
+++ b/bundles/org.eclipse.swt/Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CTabFolder2Listener.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2005 IBM Corporation and others.
+ * Copyright (c) 2000, 2017 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -10,6 +10,8 @@
  *******************************************************************************/
 package org.eclipse.swt.custom;
 
+import java.util.function.*;
+
 import org.eclipse.swt.internal.*;
 
 /**
@@ -109,4 +111,89 @@ public void restore(CTabFolderEvent event);
  * @see CTabFolder#setSelection(CTabItem)
  */
 public void showList(CTabFolderEvent event);
+
+/**
+ * Static helper method to create a <code>CTabFolder2Listener</code> for the
+ * {@link #close(CTabFolderEvent e)}) method, given a lambda expression or a method reference.
+ *
+ * @param c the consumer of the event
+ * @return CTabFolder2Listener
+ * @since 3.107
+ */
+public static CTabFolder2Listener closeAdapter(Consumer<CTabFolderEvent> c) {
+	return new CTabFolder2Adapter() {
+		@Override
+		public void close(CTabFolderEvent e) {
+			c.accept(e);
+		}
+	};
+}
+
+/**
+ * Static helper method to create a <code>CTabFolder2Listener</code> for the
+ * {@link #minimize(CTabFolderEvent e)}) method, given a lambda expression or a method reference.
+ *
+ * @param c the consumer of the event
+ * @return CTabFolder2Listener
+ * @since 3.107
+ */
+public static CTabFolder2Listener minimizeAdapter(Consumer<CTabFolderEvent> c) {
+	return new CTabFolder2Adapter() {
+		@Override
+		public void minimize(CTabFolderEvent e) {
+			c.accept(e);
+		}
+	};
+}
+
+/**
+ * Static helper method to create a <code>CTabFolder2Listener</code> for the
+ * {@link #maximize(CTabFolderEvent e)}) method, given a lambda expression or a method reference.
+ *
+ * @param c the consumer of the event
+ * @return CTabFolder2Listener
+ * @since 3.107
+ */
+public static CTabFolder2Listener maximizeAdapter(Consumer<CTabFolderEvent> c) {
+	return new CTabFolder2Adapter() {
+		@Override
+		public void maximize(CTabFolderEvent e) {
+			c.accept(e);
+		}
+	};
+}
+
+/**
+ * Static helper method to create a <code>CTabFolder2Listener</code> for the
+ * {@link #restore(CTabFolderEvent e)}) method, given a lambda expression or a method reference.
+ *
+ * @param c the consumer of the event
+ * @return CTabFolder2Listener
+ * @since 3.107
+ */
+public static CTabFolder2Listener restoreAdapter(Consumer<CTabFolderEvent> c) {
+	return new CTabFolder2Adapter() {
+		@Override
+		public void restore(CTabFolderEvent e) {
+			c.accept(e);
+		}
+	};
+}
+
+/**
+ * Static helper method to create a <code>CTabFolder2Listener</code> for the
+ * {@link #showList(CTabFolderEvent e)}) method, given a lambda expression or a method reference.
+ *
+ * @param c the consumer of the event
+ * @return CTabFolder2Listener
+ * @since 3.107
+ */
+public static CTabFolder2Listener showListAdapter(Consumer<CTabFolderEvent> c) {
+	return new CTabFolder2Adapter() {
+		@Override
+		public void showList(CTabFolderEvent e) {
+			c.accept(e);
+		}
+	};
+}
 }