X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;ds=sidebyside;f=bundles%2Forg.simantics.utils.ui%2Fsrc%2Forg%2Fsimantics%2Futils%2Fui%2Fwidgets%2FVetoingEventHandler.java;fp=bundles%2Forg.simantics.utils.ui%2Fsrc%2Forg%2Fsimantics%2Futils%2Fui%2Fwidgets%2FVetoingEventHandler.java;h=8611e3fef790da1053ebc342c9129fed20cc3e3a;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.utils.ui/src/org/simantics/utils/ui/widgets/VetoingEventHandler.java b/bundles/org.simantics.utils.ui/src/org/simantics/utils/ui/widgets/VetoingEventHandler.java
new file mode 100644
index 000000000..8611e3fef
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+++ b/bundles/org.simantics.utils.ui/src/org/simantics/utils/ui/widgets/VetoingEventHandler.java
@@ -0,0 +1,32 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2012 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * 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
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.utils.ui.widgets;
+
+import org.eclipse.swt.widgets.Event;
+import org.eclipse.swt.widgets.Listener;
+
+/**
+ * A generic SWT event listener that simply consumes and vetoes the incoming
+ * event by setting {@link Event#doit} to <code>false</code>.
+ * 
+ * @author Tuukka Lehtonen
+ */
+public class VetoingEventHandler implements Listener {
+
+    public static final VetoingEventHandler INSTANCE = new VetoingEventHandler();
+
+    @Override
+    public void handleEvent(Event event) {
+        event.doit = false;
+    }
+
+}
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