1 files changed, 93 insertions, 0 deletions
diff --git a/bundles/org.eclipse.team.core/src/org/eclipse/team/internal/core/subscribers/SyncSetInput.java b/bundles/org.eclipse.team.core/src/org/eclipse/team/internal/core/subscribers/SyncSetInput.java
new file mode 100644
index 000000000..d463fe62e
--- /dev/null
+++ b/bundles/org.eclipse.team.core/src/org/eclipse/team/internal/core/subscribers/SyncSetInput.java
@@ -0,0 +1,93 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2006 IBM Corporation 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:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.team.internal.core.subscribers;
+
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.team.core.TeamException;
+import org.eclipse.team.core.synchronize.*;
+import org.eclipse.team.internal.core.Policy;
+
+/**
+ * This is the superclass for all SyncSet input providers
+ */
+public abstract class SyncSetInput {
+
+	private SubscriberSyncInfoSet syncSet;
+	private SyncInfoFilter filter = new FastSyncInfoFilter();
+
+	public SyncSetInput(SubscriberEventHandler handler) {
+		syncSet = new SubscriberSyncInfoSet(handler);
+	}
+
+	public SubscriberSyncInfoSet getSyncSet() {
+		return syncSet;
+	}
+
+	/**
+	 * This method is invoked from reset to get all the sync information from
+	 * the input source.
+	 */
+	protected abstract void fetchInput(IProgressMonitor monitor) throws TeamException;
+
+	/**
+	 * 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.
+	 */
+	public void reset(IProgressMonitor monitor) throws TeamException {
+
+		try {
+			syncSet.beginInput();
+			monitor = Policy.monitorFor(monitor);
+			monitor.beginTask(null, 100);
+			syncSet.clear();
+			fetchInput(Policy.subMonitorFor(monitor, 90));
+		} finally {
+			syncSet.endInput(Policy.subMonitorFor(monitor, 10));
+			monitor.done();
+		}
+	}
+
+	/**
+	 * Collect the change in the provided sync info.
+	 */
+	protected void collect(SyncInfo info, IProgressMonitor monitor) {
+		boolean isOutOfSync = filter.select(info, monitor);
+		SyncInfo oldInfo = syncSet.getSyncInfo(info.getLocal());
+		boolean wasOutOfSync = oldInfo != null;
+		if (isOutOfSync) {
+			syncSet.add(info);
+		} else if (wasOutOfSync) {
+			syncSet.remove(info.getLocal());
+		}
+	}
+
+	protected void remove(IResource resource)  {
+		SyncInfo oldInfo = syncSet.getSyncInfo(resource);
+		if (oldInfo != null) {
+			syncSet.remove(resource);
+		}
+	}
+
+	public SyncInfoFilter getFilter() {
+		return filter;
+	}
+
+	public void setFilter(SyncInfoFilter filter) {
+		this.filter = filter;
+	}
+
+}