1 files changed, 118 insertions, 0 deletions
diff --git a/bundles/org.eclipse.team.cvs.ui/src/org/eclipse/team/internal/ccvs/ui/mappings/ModelReplaceOperation.java b/bundles/org.eclipse.team.cvs.ui/src/org/eclipse/team/internal/ccvs/ui/mappings/ModelReplaceOperation.java
new file mode 100644
index 000000000..0a1bb9578
--- /dev/null
+++ b/bundles/org.eclipse.team.cvs.ui/src/org/eclipse/team/internal/ccvs/ui/mappings/ModelReplaceOperation.java
@@ -0,0 +1,118 @@
+/*******************************************************************************
+ * Copyright (c) 2005, 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.ccvs.ui.mappings;
+
+import org.eclipse.core.resources.ResourcesPlugin;
+import org.eclipse.core.resources.mapping.ResourceMapping;
+import org.eclipse.core.runtime.*;
+import org.eclipse.jface.dialogs.IDialogConstants;
+import org.eclipse.jface.dialogs.MessageDialog;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.team.core.diff.*;
+import org.eclipse.team.core.mapping.IMergeContext;
+import org.eclipse.team.core.mapping.ISynchronizationContext;
+import org.eclipse.team.internal.ccvs.ui.CVSUIMessages;
+import org.eclipse.team.internal.ccvs.ui.CVSUIPlugin;
+import org.eclipse.ui.IWorkbenchPart;
+
+public class ModelReplaceOperation extends ModelUpdateOperation {
+	
+	boolean hasPrompted = false;
+
+	public ModelReplaceOperation(IWorkbenchPart part, ResourceMapping[] selectedMappings, boolean consultModels) {
+		super(part, selectedMappings, consultModels);
+	}
+	
+	/* (non-Javadoc)
+	 * @see org.eclipse.team.ui.TeamOperation#getJobName()
+	 */
+	protected String getJobName() {
+		return CVSUIMessages.ReplaceOperation_taskName;
+	}
+	
+	/* (non-Javadoc)
+	 * @see org.eclipse.team.ui.operations.ResourceMappingMergeOperation#isAttemptHeadlessMerge()
+	 */
+	protected boolean isAttemptHeadlessMerge() {
+		return true;
+	}
+	
+	/* (non-Javadoc)
+	 * @see org.eclipse.team.ui.operations.ResourceMappingMergeOperation#hasChangesOfInterest()
+	 */
+	protected boolean hasChangesOfInterest() {
+		IMergeContext context = (IMergeContext)getContext();
+		return !context.getDiffTree().isEmpty();
+	}
+	
+	/* (non-Javadoc)
+	 * @see org.eclipse.team.internal.ccvs.ui.mappings.ModelUpdateOperation#getMergeType()
+	 */
+	protected int getMergeType() {
+		return ISynchronizationContext.TWO_WAY;
+	}
+	
+	/* (non-Javadoc)
+	 * @see org.eclipse.team.ui.operations.ResourceMappingMergeOperation#performMerge(org.eclipse.core.runtime.IProgressMonitor)
+	 */
+	protected IStatus performMerge(IProgressMonitor monitor) throws CoreException {
+		if (!hasLocalChanges() || promptForOverwrite()) {
+			return super.performMerge(monitor);
+		}
+		return new Status(IStatus.ERROR, CVSUIPlugin.ID, REQUEST_PREVIEW, "", null); //$NON-NLS-1$
+	}
+
+	/*
+	 * Mde porotected to be overriden by test cases.
+	 */
+	protected boolean promptForOverwrite() {
+		if (hasPrompted)
+			return true;
+		final int[] result = new int[] { 1 };
+		Display.getDefault().syncExec(new Runnable() {
+			public void run() {
+		        MessageDialog dialog = new MessageDialog(getShell(), CVSUIMessages.ModelReplaceOperation_0, null, // accept
+		                // the
+		                // default
+		                // window
+		                // icon
+		        		CVSUIMessages.ModelReplaceOperation_1, 
+		        		MessageDialog.QUESTION, new String[] { CVSUIMessages.ModelReplaceOperation_2, CVSUIMessages.ModelReplaceOperation_3,
+		                        IDialogConstants.CANCEL_LABEL }, result[0]); // preview is the default
+		        
+		        result[0] = dialog.open();
+
+			};
+		});
+        if (result[0] == 2)
+        	throw new OperationCanceledException();
+        hasPrompted = true;
+        return result[0] == 0;
+	}
+
+	private boolean hasLocalChanges() {
+		return getContext().getDiffTree().hasMatchingDiffs(ResourcesPlugin.getWorkspace().getRoot().getFullPath(), new FastDiffFilter() {
+			public boolean select(IDiff node) {
+				if (node instanceof IThreeWayDiff) {
+					IThreeWayDiff twd = (IThreeWayDiff) node;
+					int direction = twd.getDirection();
+					if (direction == IThreeWayDiff.OUTGOING || direction == IThreeWayDiff.CONFLICTING) {
+						return true;
+					}
+				} else {
+					// Return true for any two-way change
+					return true;
+				}
+				return false;
+			}
+		});
+	}
+}