content: /*******************************************************************************
   * Copyright (c) 2000, 2007 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;
  
  import org.eclipse.jface.dialogs.Dialog;
  import org.eclipse.ltk.core.refactoring.Refactoring;
  import org.eclipse.ltk.core.refactoring.RefactoringStatus;
  import org.eclipse.ltk.ui.refactoring.RefactoringWizard;
  import org.eclipse.swt.SWT;
  import org.eclipse.swt.events.ModifyEvent;
  import org.eclipse.swt.events.ModifyListener;
  import org.eclipse.swt.events.SelectionAdapter;
  import org.eclipse.swt.events.SelectionEvent;
  import org.eclipse.swt.layout.GridData;
  import org.eclipse.swt.layout.GridLayout;
  import org.eclipse.swt.widgets.Button;
  import org.eclipse.swt.widgets.Composite;
  import org.eclipse.swt.widgets.Label;
  import org.eclipse.swt.widgets.Text;
  import org.eclipse.ui.PlatformUI;
  import org.eclipse.wst.jsdt.internal.corext.refactoring.structure.MoveInnerToTopRefactoring;
  import org.eclipse.wst.jsdt.internal.ui.IJavaHelpContextIds;
  
  public class MoveInnerToTopWizard extends RefactoringWizard {
  
  	private class MoveInnerToToplnputPage extends TextInputWizardPage {
  
  		private Text fFieldNameEntryText;
  
  		private Label fFieldNameLabel;
  
  		private Button fFinalCheckBox;
  
  		private final boolean fInitialInputValid;
  
  		public MoveInnerToToplnputPage(String initialValue) {
  			super(RefactoringMessages.MoveInnerToToplnputPage_description, true, initialValue); 
  			final MoveInnerToTopRefactoring refactoring= getMoveRefactoring();
  			final boolean mandatory= refactoring.isCreatingInstanceFieldMandatory();
  			fInitialInputValid= (!initialValue.equals("")) || !mandatory; //$NON-NLS-1$
  			if (!mandatory)
  				refactoring.setCreateInstanceField(false);
  		}
  
  		private void addFieldNameEntry(Composite newControl) {
  			fFieldNameLabel= new Label(newControl, SWT.NONE);
  			if (getMoveRefactoring().isCreatingInstanceFieldMandatory())
  				fFieldNameLabel.setText(RefactoringMessages.MoveInnerToToplnputPage_enter_name_mandatory); 
  			else
  				fFieldNameLabel.setText(RefactoringMessages.MoveInnerToToplnputPage_enter_name); 
  			fFieldNameLabel.setLayoutData(new GridData());
  
  			fFieldNameEntryText= createTextInputField(newControl);
  			fFieldNameEntryText.selectAll();
  			fFieldNameEntryText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
  		}
  
  		private void addFinalCheckBox(Composite newControl) {
  			fFinalCheckBox= new Button(newControl, SWT.CHECK);
  			fFinalCheckBox.setText(RefactoringMessages.MoveInnerToToplnputPage_instance_final); 
  			GridData data= new GridData(GridData.FILL_HORIZONTAL);
  			data.horizontalSpan= 2;
  			fFinalCheckBox.setLayoutData(data);
  			fFinalCheckBox.addSelectionListener(new SelectionAdapter() {
  
  				public void widgetSelected(SelectionEvent event) {
  					getMoveRefactoring().setMarkInstanceFieldAsFinal(fFinalCheckBox.getSelection());
  				}
  			});
  			fFieldNameEntryText.addModifyListener(new ModifyListener() {
  
  				public final void modifyText(ModifyEvent event) {
  					final String text= fFieldNameEntryText.getText();
  					final MoveInnerToTopRefactoring refactoring= getMoveRefactoring();
  					if (refactoring.isCreatingInstanceFieldMandatory())
  						setPageComplete(validateTextField(text));
  					final boolean empty= text.length() == 0;
  					if (refactoring.isCreatingInstanceFieldMandatory()) {
  						// Do nothing
  					} else if (refactoring.isCreatingInstanceFieldPossible()) {
  						fFinalCheckBox.setEnabled(!empty);
  					}
  					if (!refactoring.isCreatingInstanceFieldMandatory())
  						refactoring.setCreateInstanceField(!empty);
  				}
  			});
  		}
  
  		public void createControl(Composite parent) {
  			initializeDialogUnits(parent);
  			Composite newControl= new Composite(parent, SWT.NONE);
  			setControl(newControl);
  			PlatformUI.getWorkbench().getHelpSystem().setHelp(newControl, IJavaHelpContextIds.MOVE_INNER_TO_TOP_WIZARD_PAGE);
  			newControl.setLayout(new GridLayout());
  			Dialog.applyDialogFont(newControl);
  
  			GridLayout layout= new GridLayout();
  			layout.numColumns= 2;
  			layout.verticalSpacing= 8;
  			newControl.setLayout(layout);
  
  			addFieldNameEntry(newControl);
  			addFinalCheckBox(newControl);
  
  			if (getMoveRefactoring().isCreatingInstanceFieldPossible()) {
  				fFinalCheckBox.setSelection(getMoveRefactoring().isInstanceFieldMarkedFinal());
  				fFinalCheckBox.setEnabled(true);
  			} else {
  				fFinalCheckBox.setSelection(false);
  				fFinalCheckBox.setEnabled(false);
  			}
  		}
  
  		/*
  		 * @see org.eclipse.wst.jsdt.internal.ui.refactoring.TextInputWizardPage#isEmptyInputValid()
  		 */
  		protected boolean isEmptyInputValid() {
  			return !getMoveRefactoring().isCreatingInstanceFieldMandatory();
  		}
  
  		/*
  		 * @see org.eclipse.wst.jsdt.internal.ui.refactoring.TextInputWizardPage#isInitialInputValid()
  		 */
  		protected boolean isInitialInputValid() {
  			return fInitialInputValid;
  		}
  
  		/*
  		 * @see org.eclipse.jface.dialogs.IDialogPage#setVisible(boolean)
  		 */
  		public void setVisible(boolean visible) {
  			super.setVisible(visible);
  			if (visible) {
  				String message= getMoveRefactoring().isCreatingInstanceFieldMandatory() ? RefactoringMessages.MoveInnerToToplnputPage_mandatory_info : RefactoringMessages.MoveInnerToToplnputPage_optional_info;
  				setPageComplete(RefactoringStatus.createInfoStatus(message)); 
  			} else {
  				setPageComplete(new RefactoringStatus());
  				getContainer().updateMessage();
  			}
  		}
  
  		/*
  		 * @see org.eclipse.wst.jsdt.internal.ui.refactoring.TextInputWizardPage#validateTextField(String)
  		 */
  		protected RefactoringStatus validateTextField(String text) {
  			final MoveInnerToTopRefactoring refactoring= getMoveRefactoring();
  			refactoring.setEnclosingInstanceName(text);
  			if (refactoring.isCreatingInstanceFieldMandatory())
  				return refactoring.checkEnclosingInstanceName(text);
  			else if (!text.equals("")) //$NON-NLS-1$
  				return refactoring.checkEnclosingInstanceName(text);
  			else
  				return new RefactoringStatus();
  		}
  	}
  
  	public MoveInnerToTopWizard(Refactoring refactoring) {
  		super(refactoring, DIALOG_BASED_USER_INTERFACE);
  		setDefaultPageTitle(RefactoringMessages.MoveInnerToTopWizard_Move_Inner); 
  	}
  
  	/*
  	 * @see RefactoringWizard#addUserInputPages
  	 */
  	protected void addUserInputPages() {
  		final MoveInnerToTopRefactoring refactoring= getMoveRefactoring();
  		if (refactoring.isCreatingInstanceFieldPossible())
  			addPage(new MoveInnerToToplnputPage(refactoring.isCreatingInstanceFieldMandatory() ? refactoring.getEnclosingInstanceName() : "")); //$NON-NLS-1$
  		else
  			setChangeCreationCancelable(false);
  	}
  
  	private MoveInnerToTopRefactoring getMoveRefactoring() {
  		return (MoveInnerToTopRefactoring) getRefactoring();
  	}
  }
  