content: /*******************************************************************************
   * Copyright (c) 2000, 2008 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.wst.jsdt.internal.ui.refactoring.reorg;
  
  import org.eclipse.core.resources.IResource;
  import org.eclipse.core.runtime.Assert;
  import org.eclipse.core.runtime.CoreException;
  import org.eclipse.core.runtime.IStatus;
  import org.eclipse.core.runtime.OperationCanceledException;
  import org.eclipse.jface.dialogs.IInputValidator;
  import org.eclipse.jface.dialogs.InputDialog;
  import org.eclipse.jface.window.Window;
  import org.eclipse.jface.wizard.Wizard;
  import org.eclipse.ltk.core.refactoring.RefactoringStatus;
  import org.eclipse.swt.widgets.Composite;
  import org.eclipse.swt.widgets.Control;
  import org.eclipse.swt.widgets.Shell;
  import org.eclipse.wst.jsdt.core.IJavaScriptUnit;
  import org.eclipse.wst.jsdt.core.IJavaScriptElement;
  import org.eclipse.wst.jsdt.core.IPackageFragment;
  import org.eclipse.wst.jsdt.core.IPackageFragmentRoot;
  import org.eclipse.wst.jsdt.core.JavaScriptConventions;
  import org.eclipse.wst.jsdt.core.JavaScriptCore;
  import org.eclipse.wst.jsdt.internal.corext.refactoring.Checks;
  import org.eclipse.wst.jsdt.internal.corext.refactoring.rename.RenamePackageProcessor;
  import org.eclipse.wst.jsdt.internal.corext.refactoring.reorg.INewNameQueries;
  import org.eclipse.wst.jsdt.internal.corext.refactoring.reorg.INewNameQuery;
  import org.eclipse.wst.jsdt.internal.corext.util.JavaModelUtil;
  import org.eclipse.wst.jsdt.internal.corext.util.Messages;
  import org.eclipse.wst.jsdt.internal.ui.JavaScriptPlugin;
  import org.eclipse.wst.jsdt.internal.ui.dialogs.TextFieldNavigationHandler;
  
  public class NewNameQueries implements INewNameQueries {
  
  	private static final String INVALID_NAME_NO_MESSAGE= "";//$NON-NLS-1$
  	private final Wizard fWizard;
  	private final Shell fShell;
  
  	public NewNameQueries() {
  		fShell= null;
  		fWizard= null;
  	}
  	
  	public NewNameQueries(Wizard wizard) {
  		fWizard= wizard;
  		fShell= null;
  	}
  	
  	public NewNameQueries(Shell shell) {
  		fShell = shell;
  		fWizard= null;
  	}
  
  	private Shell getShell() {
  		Assert.isTrue(fWizard == null || fShell == null);
  		if (fWizard != null)
  			return fWizard.getContainer().getShell();
  			
  		if (fShell != null)
  			return fShell;
  		return JavaScriptPlugin.getActiveWorkbenchShell();
  	}
  
  	public INewNameQuery createNewCompilationUnitNameQuery(IJavaScriptUnit cu, String initialSuggestedName) {
  		String[] keys= {JavaScriptCore.removeJavaScriptLikeExtension(cu.getElementName())};
  		String message= Messages.format(ReorgMessages.ReorgQueries_enterNewNameQuestion, keys); 
  		return createStaticQuery(createCompilationUnitNameValidator(cu), message, initialSuggestedName, getShell());
  	}
  
  
  	public INewNameQuery createNewResourceNameQuery(IResource res, String initialSuggestedName) {
  		String[] keys= {res.getName()};
  		String message= Messages.format(ReorgMessages.ReorgQueries_enterNewNameQuestion, keys); 
  		return createStaticQuery(createResourceNameValidator(res), message, initialSuggestedName, getShell());
  	}
  
  
  	public INewNameQuery createNewPackageNameQuery(IPackageFragment pack, String initialSuggestedName) {
  		String[] keys= {pack.getElementName()};
  		String message= Messages.format(ReorgMessages.ReorgQueries_enterNewNameQuestion, keys); 
  		return createStaticQuery(createPackageNameValidator(pack), message, initialSuggestedName, getShell());
  	}
  
  	public INewNameQuery createNewPackageFragmentRootNameQuery(IPackageFragmentRoot root, String initialSuggestedName) {
  		String[] keys= {root.getElementName()};
  		String message= Messages.format(ReorgMessages.ReorgQueries_enterNewNameQuestion, keys); 
  		return createStaticQuery(createPackageFragmentRootNameValidator(root), message, initialSuggestedName, getShell());
  	}
  
  
  	public INewNameQuery createNullQuery(){
  		return createStaticQuery(null);
  	}
  
  
  	public INewNameQuery createStaticQuery(final String newName){
  		return new INewNameQuery(){
  			public String getNewName() {
  				return newName;
  			}
  		};
  	}
  
  	private static INewNameQuery createStaticQuery(final IInputValidator validator, final String message, final String initial, final Shell shell){
  		return new INewNameQuery(){
  			public String getNewName() throws OperationCanceledException {
  				InputDialog dialog= new InputDialog(shell, ReorgMessages.ReorgQueries_nameConflictMessage, message, initial, validator) {
  					/* (non-Javadoc)
  					 * @see org.eclipse.jface.dialogs.InputDialog#createDialogArea(org.eclipse.swt.widgets.Composite)
  					 */
  					protected Control createDialogArea(Composite parent) {
  						Control area= super.createDialogArea(parent);
  						TextFieldNavigationHandler.install(getText());
  						return area;
  					}
  				};
  				if (dialog.open() == Window.CANCEL)
  					throw new OperationCanceledException();
  				return dialog.getValue();
  			}
  		};
  	}
  
  	private static IInputValidator createResourceNameValidator(final IResource res){
  		IInputValidator validator= new IInputValidator(){
  			public String isValid(String newText) {
  				if (newText == null || "".equals(newText) || res.getParent() == null) //$NON-NLS-1$
  					return INVALID_NAME_NO_MESSAGE;
  				if (res.getParent().findMember(newText) != null)
  					return ReorgMessages.ReorgQueries_resourceWithThisNameAlreadyExists; 
  				if (! res.getParent().getFullPath().isValidSegment(newText))
  					return ReorgMessages.ReorgQueries_invalidNameMessage; 
  				IStatus status= res.getParent().getWorkspace().validateName(newText, res.getType());
  				if (status.getSeverity() == IStatus.ERROR)
  					return status.getMessage();
  					
  				if (res.getName().equalsIgnoreCase(newText))
  					return ReorgMessages.ReorgQueries_resourceExistsWithDifferentCaseMassage; 
  					
  				return null;
  			}
  		};
  		return validator;
  	}
  
  	private static IInputValidator createCompilationUnitNameValidator(final IJavaScriptUnit cu) {
  		IInputValidator validator= new IInputValidator(){
  			public String isValid(String newText) {
  				if (newText == null || "".equals(newText)) //$NON-NLS-1$
  					return INVALID_NAME_NO_MESSAGE;
  				String newCuName= JavaModelUtil.getRenamedCUName(cu, newText);
  				IStatus status= JavaScriptConventions.validateCompilationUnitName(newCuName);	
  				if (status.getSeverity() == IStatus.ERROR)
  					return status.getMessage();
  				RefactoringStatus refStatus;
  				refStatus= Checks.checkCompilationUnitNewName(cu, newText);
  				if (refStatus.hasFatalError())
  					return refStatus.getMessageMatchingSeverity(RefactoringStatus.FATAL);
  
  				if (cu.getElementName().equalsIgnoreCase(newCuName))
  					return ReorgMessages.ReorgQueries_resourceExistsWithDifferentCaseMassage; 
  				
  				return null;	
  			}
  		};
  		return validator;
  	}
  
  
  	private static IInputValidator createPackageFragmentRootNameValidator(final IPackageFragmentRoot root) {
  		return new IInputValidator() {
  			IInputValidator resourceNameValidator= createResourceNameValidator(root.getResource());
  			public String isValid(String newText) {
  				return resourceNameValidator.isValid(newText);
  			}
  		};
  	}
  	
  	private static IInputValidator createPackageNameValidator(final IPackageFragment pack) {
  		IInputValidator validator= new IInputValidator(){
  			public String isValid(String newText) {
  				if (newText == null || "".equals(newText)) //$NON-NLS-1$
  					return INVALID_NAME_NO_MESSAGE;
  				IStatus status= JavaScriptConventions.validatePackageName(newText);
  				if (status.getSeverity() == IStatus.ERROR)
  					return status.getMessage();
  				
  				IJavaScriptElement parent= pack.getParent();
  				try {
  					if (parent instanceof IPackageFragmentRoot){ 
  						if (! RenamePackageProcessor.isPackageNameOkInRoot(newText, (IPackageFragmentRoot)parent))
  							return ReorgMessages.ReorgQueries_packagewithThatNameexistsMassage;	 
  					}	
  				} catch (CoreException e) {
  					return INVALID_NAME_NO_MESSAGE;
  				}
  				if (pack.getElementName().equalsIgnoreCase(newText))
  					return ReorgMessages.ReorgQueries_resourceExistsWithDifferentCaseMassage; 
  					
  				return null;
  			}
  		};	
  		return validator;
  	}			
  }
  