Bug 145698 Name change won't enable "restore property" button
Steps to reproduce: 1.New a report, extends lib.label 2.Choose the label, switch to property editor, chang its name to "aa" 3.Choose the label again Expected result: "Restore property" button is enabled Actual result: "Restore property" button is grayed out
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
import org.eclipse.birt.report.model.api.validators.IValidationListener;
import org.eclipse.birt.report.model.api.validators.ValidationEvent;
import org.eclipse.birt.report.model.command.CustomMsgCommand;
import org.eclipse.birt.report.model.command.LibraryCommand;
import org.eclipse.birt.report.model.command.PropertyCommand;
import org.eclipse.birt.report.model.command.ShiftLibraryCommand;
import org.eclipse.birt.report.model.command.ThemeCommand;
import org.eclipse.birt.report.model.core.CachedMemberRef;
import org.eclipse.birt.report.model.core.DesignElement;
import org.eclipse.birt.report.model.core.Module;
import org.eclipse.birt.report.model.core.Structure;
import org.eclipse.birt.report.model.core.StyleElement;
import org.eclipse.birt.report.model.core.namespace.IModuleNameSpace;
import org.eclipse.birt.report.model.css.StyleSheetLoader;
import org.eclipse.birt.report.model.elements.CascadingParameterGroup;
import org.eclipse.birt.report.model.elements.DataSet;
import org.eclipse.birt.report.model.elements.JointDataSet;
import org.eclipse.birt.report.model.elements.Library;
import org.eclipse.birt.report.model.elements.TemplateParameterDefinition;
import org.eclipse.birt.report.model.elements.Theme;
import org.eclipse.birt.report.model.elements.Translation;
import org.eclipse.birt.report.model.elements.interfaces.IReportDesignModel;
import org.eclipse.birt.report.model.metadata.ElementPropertyDefn;
import org.eclipse.birt.report.model.util.ModelUtil;
import com.ibm.icu.util.ULocale;
/**
 * Abstract module handle which provides the common functionalities of report
 * design and library.
 * 
 * <table border="1" cellpadding="2" cellspacing="2" style="border-collapse: