[Rubyeclipse-commit] SF.net SVN: rubyeclipse: [2195] trunk/org.rubypeople.rdt.ui/src/org/ rubypeople/rdt/internal/corext/refactoring/changes/UndoRubyScriptChange. java

[<caw...@us...>]

Revision: 2195
          http://svn.sourceforge.net/rubyeclipse/?rev=2195&view=rev
Author:   cawilliams
Date:     2007-03-16 07:05:30 -0700 (Fri, 16 Mar 2007)

Log Message:
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Added Paths:
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    trunk/org.rubypeople.rdt.ui/src/org/rubypeople/rdt/internal/corext/refactoring/changes/UndoRubyScriptChange.java

Added: trunk/org.rubypeople.rdt.ui/src/org/rubypeople/rdt/internal/corext/refactoring/changes/UndoRubyScriptChange.java
===================================================================
--- trunk/org.rubypeople.rdt.ui/src/org/rubypeople/rdt/internal/corext/refactoring/changes/UndoRubyScriptChange.java	                        (rev 0)
+++ trunk/org.rubypeople.rdt.ui/src/org/rubypeople/rdt/internal/corext/refactoring/changes/UndoRubyScriptChange.java	2007-03-16 14:05:30 UTC (rev 2195)
@@ -0,0 +1,77 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2005 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.rubypeople.rdt.internal.corext.refactoring.changes;
+
+import org.eclipse.core.resources.IFile;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Status;
+import org.eclipse.core.runtime.SubProgressMonitor;
+import org.eclipse.ltk.core.refactoring.Change;
+import org.eclipse.ltk.core.refactoring.ContentStamp;
+import org.eclipse.ltk.core.refactoring.UndoTextFileChange;
+import org.eclipse.text.edits.UndoEdit;
+import org.rubypeople.rdt.core.IRubyScript;
+import org.rubypeople.rdt.internal.core.util.Messages;
+import org.rubypeople.rdt.internal.ui.RubyPlugin;
+
+/* package */ class UndoRubyScriptChange extends UndoTextFileChange {
+	
+	private IRubyScript fCUnit;
+
+	public UndoRubyScriptChange(String name, IRubyScript unit, UndoEdit undo, ContentStamp stampToRestore, int saveMode) throws CoreException {
+		super(name, getFile(unit), undo, stampToRestore, saveMode);
+		fCUnit= unit;
+	}
+
+	private static IFile getFile(IRubyScript cunit) throws CoreException {
+		IFile file= (IFile)cunit.getResource();
+		if (file == null)
+			throw new CoreException(new Status(
+				IStatus.ERROR, 
+				RubyPlugin.getPluginId(), 
+				IStatus.ERROR, 
+				Messages.format(
+					RefactoringCoreMessages.UndoRubyScriptChange_no_resource, 
+					cunit.getElementName()), 
+				null)
+			);
+		return file;
+	}
+	
+	/**
+	 * {@inheritDoc}
+	 */
+	public Object getModifiedElement() {
+		return fCUnit;
+	}
+	
+	/**
+	 * {@inheritDoc}
+	 */
+	protected Change createUndoChange(UndoEdit edit, ContentStamp stampToRestore) throws CoreException {
+		return new UndoRubyScriptChange(getName(), fCUnit, edit, stampToRestore, getSaveMode());
+	}
+	
+	/**
+	 * {@inheritDoc}
+	 */
+	public Change perform(IProgressMonitor pm) throws CoreException {
+		pm.beginTask("", 2); //$NON-NLS-1$
+		fCUnit.becomeWorkingCopy(null, new SubProgressMonitor(pm,1));
+		try {
+			return super.perform(new SubProgressMonitor(pm,1));
+		} finally {
+			fCUnit.discardWorkingCopy();
+		}
+	}
+}


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