1 files changed, 107 insertions, 0 deletions
diff --git a/bundles/org.eclipse.team.ui/src/org/eclipse/team/internal/ui/sync/views/SyncSetInput.java b/bundles/org.eclipse.team.ui/src/org/eclipse/team/internal/ui/sync/views/SyncSetInput.java
new file mode 100644
index 000000000..b593aecbc
--- /dev/null
+++ b/bundles/org.eclipse.team.ui/src/org/eclipse/team/internal/ui/sync/views/SyncSetInput.java
@@ -0,0 +1,107 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.team.internal.ui.sync.views;
+
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.team.core.TeamException;
+import org.eclipse.team.core.subscribers.SyncInfo;
+import org.eclipse.team.ui.sync.SyncInfoFilter;
+
+/**
+ * This is the superclass for all SyncSet input providers
+ */
+public abstract class SyncSetInput {
+	
+	private SyncSet syncSet = new SyncSet();
+	private SyncInfoFilter filter = new SyncInfoFilter();
+	
+	public SyncSet getSyncSet() {
+		return syncSet;
+	}
+
+	protected void log(TeamException e) {
+		// TODO: log or throw or communicate to the view that an error has occured
+	}
+	
+	/**
+	 * The input is no longer being used. Disconnect it from its source.
+	 */
+	public abstract void disconnect();
+
+	/**
+	 * Reset the input. This will clear the current contents of the sync set and
+	 * obtain the contents from the input source.
+	 * 
+	 * @param monitor
+	 * @throws TeamException
+	 */
+	protected void reset(IProgressMonitor monitor) throws TeamException {
+		try {
+			syncSet.beginInput();
+			syncSet.reset();
+			fetchInput(monitor);
+		} finally {
+			getSyncSet().endInput();
+		}
+	}
+
+	/**
+	 * This method is invoked from reset to get all the sync information from
+	 * the input source.
+	 * 
+	 * @param monitor
+	 */
+	protected abstract void fetchInput(IProgressMonitor monitor) throws TeamException;
+	
+	/**
+	 * Collect the change in the provided sync info.
+	 * 
+	 * @param info
+	 */
+	protected void collect(SyncInfo info) {
+		boolean isOutOfSync = filter.select(info);
+		SyncInfo oldInfo = syncSet.getSyncInfo(info.getLocal());
+		boolean wasOutOfSync = oldInfo != null;
+		if (isOutOfSync) {
+			if (wasOutOfSync) {
+				syncSet.changed(info);
+			} else {
+				syncSet.add(info);
+			}
+		} else if (wasOutOfSync) {
+			syncSet.remove(info.getLocal());
+		}
+	}
+
+	protected void remove(IResource resource)  {
+		SyncInfo oldInfo = syncSet.getSyncInfo(resource);
+		boolean wasOutOfSync = oldInfo != null;
+		if (oldInfo != null) {
+			syncSet.remove(resource);
+		}
+	}
+	
+	/**
+	 * @return
+	 */
+	public SyncInfoFilter getFilter() {
+		return filter;
+	}
+
+	/**
+	 * @param filter
+	 */
+	public void setFilter(SyncInfoFilter filter, IProgressMonitor monitor) throws TeamException {
+		this.filter = filter;
+		reset(monitor);
+	}
+}