X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.utils.ui%2Fsrc%2Forg%2Fsimantics%2Futils%2Fui%2Fjface%2FActiveSelectionProvider.java;fp=bundles%2Forg.simantics.utils.ui%2Fsrc%2Forg%2Fsimantics%2Futils%2Fui%2Fjface%2FActiveSelectionProvider.java;h=eefa5e2bdf8774be517d14262ad46ee285a5acee;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.utils.ui/src/org/simantics/utils/ui/jface/ActiveSelectionProvider.java b/bundles/org.simantics.utils.ui/src/org/simantics/utils/ui/jface/ActiveSelectionProvider.java
new file mode 100644
index 000000000..eefa5e2bd
--- /dev/null
+++ b/bundles/org.simantics.utils.ui/src/org/simantics/utils/ui/jface/ActiveSelectionProvider.java
@@ -0,0 +1,51 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 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.jface;
+
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.ISelectionProvider;
+
+/**
+ * A base implementation of ISelectionProvider that fires selection events on
+ * {@link #setSelection(ISelection)} <strong>only if</strong> the selection
+ * differs from the previous selection.
+ * 
+ * <p>
+ * Contains an empty StructuredSelection by default. This version provides an
+ * implementation that by default notifies of all selection changes that
+ * actually changed the selection contents.
+ * </p>
+ * 
+ * @author Tuukka Lehtonen
+ */
+public class ActiveSelectionProvider extends BaseSelectionProvider {
+
+    /**
+     * Create new ActiveSelectionProvider. Selection change notifications will
+     * run synchronously in the thread that invoked
+     * {@link ISelectionProvider#setSelection(ISelection)}.
+     */
+    public ActiveSelectionProvider() {
+        super();
+    }
+
+    /**
+     * Overrides default {@link BaseSelectionProvider#setSelection(ISelection)}
+     * behaviour with the behaviour of
+     * {@link BaseSelectionProvider#setAndFireNonEqualSelection(ISelection)}.
+     */
+    @Override
+    public void setSelection(ISelection selection) {
+        super.setAndFireNonEqualSelection(selection);
+    }
+
+}