Work around SWT 4.13 - 4.18 Win32 DnD bug 567422

[simantics/platform.git] / bundles / org.eclipse.swt.win32.win32.x86_64 / src / org / eclipse / swt / events / MouseTrackAdapter.java

diff --git a/bundles/org.eclipse.swt.win32.win32.x86_64/src/org/eclipse/swt/events/MouseTrackAdapter.java b/bundles/org.eclipse.swt.win32.win32.x86_64/src/org/eclipse/swt/events/MouseTrackAdapter.java
new file mode 100644 (file)
index 0000000..5266479
--- /dev/null
+++ b/bundles/org.eclipse.swt.win32.win32.x86_64/src/org/eclipse/swt/events/MouseTrackAdapter.java
@@ -0,0 +1,74 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2017 IBM Corporation and others.
+ *
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.swt.events;
+
+
+/**
+ * This adapter class provides default implementations for the
+ * methods described by the <code>MouseTrackListener</code> interface.
+ * <p>
+ * Classes that wish to deal with <code>MouseEvent</code>s which
+ * occur as the mouse pointer passes (or hovers) over controls can
+ * 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
+ * {@link MouseTrackListener#mouseEnterAdapter(java.util.function.Consumer)},
+ * {@link MouseTrackListener#mouseExitAdapter(java.util.function.Consumer)}
+ * and
+ * {@link MouseTrackListener#mouseHoverAdapter(java.util.function.Consumer)},
+ * which accept a lambda expression or a method reference that implements the event consumer.
+ * </p>
+ *
+ * @see MouseTrackListener
+ * @see MouseEvent
+ * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
+ */
+public abstract class MouseTrackAdapter implements MouseTrackListener {
+
+/**
+ * Sent when the mouse pointer passes into the area of
+ * the screen covered by a control.
+ * The default behavior is to do nothing.
+ *
+ * @param e an event containing information about the mouse enter
+ */
+@Override
+public void mouseEnter(MouseEvent e) {
+}
+
+/**
+ * Sent when the mouse pointer passes out of the area of
+ * the screen covered by a control.
+ * The default behavior is to do nothing.
+ *
+ * @param e an event containing information about the mouse exit
+ */
+@Override
+public void mouseExit(MouseEvent e) {
+}
+
+/**
+ * Sent when the mouse pointer hovers (that is, stops moving
+ * for an (operating system specified) period of time) over
+ * a control.
+ * The default behavior is to do nothing.
+ *
+ * @param e an event containing information about the hover
+ */
+@Override
+public void mouseHover(MouseEvent e) {
+}
+}