NEW - bug 272191: [api] move SelectionProviderAdapter into commons

https://bugs.eclipse.org/bugs/show_bug.cgi?id=272191

1 files changed, 61 insertions, 0 deletions

diff --git a/org.eclipse.mylyn.commons.ui/src/org/eclipse/mylyn/internal/provisional/commons/ui/SelectionProviderAdapter.java b/org.eclipse.mylyn.commons.ui/src/org/eclipse/mylyn/internal/provisional/commons/ui/SelectionProviderAdapter.java
new file mode 100644
index 00000000..371f6231
--- /dev/null
+++ b/org.eclipse.mylyn.commons.ui/src/org/eclipse/mylyn/internal/provisional/commons/ui/SelectionProviderAdapter.java
@@ -0,0 +1,61 @@
+/*******************************************************************************
+ * Copyright (c) 2004, 2008 Tasktop Technologies 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
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Tasktop Technologies - initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.mylyn.internal.provisional.commons.ui;
+
+import org.eclipse.core.commands.common.EventManager;
+import org.eclipse.core.runtime.SafeRunner;
+import org.eclipse.jface.util.SafeRunnable;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.ISelectionChangedListener;
+import org.eclipse.jface.viewers.ISelectionProvider;
+import org.eclipse.jface.viewers.SelectionChangedEvent;
+
+/**
+ * Provides an simple implementation of {@link ISelectionProvider} that propagates selection events to registered
+ * listeners.
+ * 
+ * @author Steffen Pingel
+ */
+public class SelectionProviderAdapter extends EventManager implements ISelectionProvider {
+
+	private ISelection selection;
+
+	public void addSelectionChangedListener(ISelectionChangedListener listener) {
+		addListenerObject(listener);
+	}
+
+	public ISelection getSelection() {
+		return selection;
+	}
+
+	public void removeSelectionChangedListener(ISelectionChangedListener listener) {
+		removeListenerObject(listener);
+	}
+
+	protected void selectionChanged(final SelectionChangedEvent event) {
+		Object[] listeners = getListeners();
+		for (int i = 0; i < listeners.length; ++i) {
+			final ISelectionChangedListener listener = (ISelectionChangedListener) listeners[i];
+			SafeRunner.run(new SafeRunnable() {
+				public void run() {
+					listener.selectionChanged(event);
+				}
+			});
+		}
+	}
+
+	public void setSelection(ISelection selection) {
+		this.selection = selection;
+		selectionChanged(new SelectionChangedEvent(this, selection));
+	}
+
+}