org.eclipse.jdt.ui/ui refactoring/org/eclipse/jdt/internal/ui/refactoring/sef/SelfEncapsulateFieldInputPage.java - jdt/eclipse.jdt.ui - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2019 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/

 package org.eclipse.jdt.internal.ui.refactoring.sef;

 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Iterator;
 import java.util.List;

 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.Combo;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Link;
 import org.eclipse.swt.widgets.Text;

 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.jface.window.Window;

 import org.eclipse.ui.PlatformUI;
 import org.eclipse.ui.dialogs.PreferencesUtil;

 import org.eclipse.ltk.core.refactoring.RefactoringStatus;
 import org.eclipse.ltk.ui.refactoring.UserInputWizardPage;

 import org.eclipse.jdt.core.Flags;
 import org.eclipse.jdt.core.IField;
 import org.eclipse.jdt.core.IJavaProject;
 import org.eclipse.jdt.core.IMethod;
 import org.eclipse.jdt.core.JavaCore;
 import org.eclipse.jdt.core.JavaModelException;

 import org.eclipse.jdt.internal.corext.refactoring.sef.SelfEncapsulateFieldRefactoring;
 import org.eclipse.jdt.internal.corext.util.JdtFlags;

 import org.eclipse.jdt.ui.JavaElementLabels;
 import org.eclipse.jdt.ui.PreferenceConstants;

 import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
 import org.eclipse.jdt.internal.ui.JavaPluginImages;
 import org.eclipse.jdt.internal.ui.dialogs.TextFieldNavigationHandler;
 import org.eclipse.jdt.internal.ui.preferences.CodeStylePreferencePage;
 import org.eclipse.jdt.internal.ui.preferences.JavaPreferencesSettings;
 import org.eclipse.jdt.internal.ui.refactoring.RefactoringMessages;
 import org.eclipse.jdt.internal.ui.util.SWTUtil;

 public class SelfEncapsulateFieldInputPage extends UserInputWizardPage {

 	private SelfEncapsulateFieldRefactoring fRefactoring;
 	private IDialogSettings fSettings;
 	private List<Control> fEnablements;

 	private Text fGetterName;
 	private Text fSetterName;

 	private Label fGetterInfo;
 	private Label fSetterInfo;

 	private String fOldSetterValue= ""; //$NON-NLS-1$
 	private String fOldGetterValue= ""; //$NON-NLS-1$

 	private Button fGenerateGetter;
 	private Button fGenerateSetter;

 	private static final String GENERATE_JAVADOC= "GenerateJavadoc";  //$NON-NLS-1$

 	public SelfEncapsulateFieldInputPage() {
 		super("InputPage"); //$NON-NLS-1$
 		setDescription(RefactoringMessages.SelfEncapsulateFieldInputPage_description);
 		setImageDescriptor(JavaPluginImages.DESC_WIZBAN_REFACTOR_CU);
 	}

 	@Override
 	public void createControl(Composite parent) {
 		fRefactoring= (SelfEncapsulateFieldRefactoring)getRefactoring();

 		fEnablements= new ArrayList<>();
 		loadSettings();

 		Composite result= new Composite(parent, SWT.NONE);
 		setControl(result);
 		initializeDialogUnits(result);

 		result.setLayout(new GridLayout(3, false));

 		Composite nameComposite= new Composite(result, SWT.NONE);
 		nameComposite.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 3, 1));

 		GridLayout gridLayout= new GridLayout(3, false);
 		gridLayout.marginHeight= 0;
 		gridLayout.marginWidth= 0;

 		nameComposite.setLayout(gridLayout);
 		fGenerateGetter= new Button(nameComposite, SWT.CHECK);
 		fGenerateGetter.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_getter_name);
 		fGenerateGetter.setSelection(true);
 		fGenerateGetter.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				if (fGenerateGetter.getSelection()) {
 					fGetterName.setEnabled(true);
 					fGetterName.setText(fOldGetterValue);
 				} else {
 					fOldGetterValue= fGetterName.getText();
 					fGetterName.setText(""); //$NON-NLS-1$
 					fGetterName.setEnabled(false);
 				}
 				doGetterModified();
 			}
 		});
 		fGenerateGetter.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));

 		fGetterName= new Text(nameComposite, SWT.BORDER);
 		fGetterName.setText(fRefactoring.getGetterName());
 		GridData gd= new GridData(GridData.FILL_HORIZONTAL);
 		gd.widthHint= convertWidthInCharsToPixels(25);
 		fGetterName.setLayoutData(gd);
 		fGetterName.addModifyListener(new ModifyListener() {
 			@Override
 			public void modifyText(ModifyEvent e) {
 				doGetterModified();
 			}
 		});
 		TextFieldNavigationHandler.install(fGetterName);


 		fGetterInfo= new Label(nameComposite, SWT.LEAD);
 		fGetterInfo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 		updateUseGetter();

 		fGenerateSetter= new Button(nameComposite, SWT.CHECK);
 		fGenerateSetter.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_setter_name);
 		fGenerateSetter.setEnabled(needsSetter());
 		fGenerateSetter.setSelection(needsSetter());
 		fGenerateSetter.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				if (fGenerateSetter.getSelection()) {
 					fSetterName.setEnabled(true);
 					fSetterName.setText(fOldSetterValue);
 				} else {
 					fOldSetterValue= fSetterName.getText();
 					fSetterName.setText(""); //$NON-NLS-1$
 					fSetterName.setEnabled(false);
 				}
 				doSetterModified();
 			}
 		});
 		fGenerateSetter.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));

 		fSetterName= new Text(nameComposite, SWT.BORDER);
 		if(needsSetter()) {
 			fSetterName.setText(fRefactoring.getSetterName());
 		} else {
 			fSetterName.setText(""); //$NON-NLS-1$
 			fSetterName.setEnabled(false);
 		}
 		gd= new GridData(GridData.FILL_HORIZONTAL);
 		gd.widthHint= convertWidthInCharsToPixels(25);
 		fSetterName.setLayoutData(gd);
 		fSetterName.addModifyListener(new ModifyListener() {
 			@Override
 			public void modifyText(ModifyEvent e) {
 				doSetterModified();
 			}
 		});
 		TextFieldNavigationHandler.install(fSetterName);

 		fSetterInfo= new Label(nameComposite, SWT.LEAD);
 		fSetterInfo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 		updateUseSetter();

 		Link link= new Link(nameComposite, SWT.NONE);
 		link.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_configure_link);
 		link.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				doOpenPreference();
 			}
 		});
 		link.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 3, 1));

 		Label separator= new Label(result, SWT.NONE);
 		separator.setText(""); //$NON-NLS-1$
 		separator.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 3, 1));

 		createFieldAccessBlock(result);

 		Label label= new Label(result, SWT.LEFT);
 		label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));
 		label.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_insert_after);
 		fEnablements.add(label);

 		final Combo combo= new Combo(result, SWT.READ_ONLY);
 		SWTUtil.setDefaultVisibleItemCount(combo);
 		fillWithPossibleInsertPositions(combo, fRefactoring.getField());
 		combo.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent event) {
 				fRefactoring.setInsertionIndex(combo.getSelectionIndex() - 1);
 			}
 		});
 		combo.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 2, 1));
 		fEnablements.add(combo);

 		createAccessModifier(result);

 		Button checkBox= new Button(result, SWT.CHECK);
 		checkBox.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_generateJavadocComment);
 		checkBox.setSelection(fRefactoring.getGenerateJavadoc());
 		checkBox.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				setGenerateJavadoc(((Button)e.widget).getSelection());
 			}
 		});
 		checkBox.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 3, 1));

 		fEnablements.add(checkBox);

 		updateEnablements();

 		processValidation();

 		fGetterName.setFocus();

 		Dialog.applyDialogFont(result);
 		PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), IJavaHelpContextIds.SEF_WIZARD_PAGE);
 	}

 	private void updateUseSetter() {
 		if(!needsSetter()) {
 			fGenerateSetter.setSelection(false);
 			fGenerateSetter.setEnabled(false);
 			fSetterInfo.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_final_field);
 		} else if (fGenerateSetter.getSelection() == false)
 			fSetterInfo.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_no_setter_created);
 		else if (fSetterName.getText().isEmpty())
 			fSetterInfo.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_no_setter_name);
 		else if (fRefactoring.isUsingLocalSetter())
 			fSetterInfo.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_useexistingsetter_label);
 		else
 			fSetterInfo.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_usenewgetter_label);
 		updateEnablements();
 	}

 	private void updateEnablements() {
 		boolean enable=!(fRefactoring.isUsingLocalSetter()&&fRefactoring.isUsingLocalGetter());
 		for (Iterator<Control> iter= fEnablements.iterator(); iter.hasNext();) {
 			Control control= iter.next();
 			control.setEnabled(enable);
 		}
 	}

 	private void updateUseGetter() {
 		if (fGenerateGetter.getSelection() == false)
 			fGetterInfo.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_no_getter_created);
 		else if (fRefactoring.isUsingLocalGetter())
 			fGetterInfo.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_useexistinggetter_label);
 		else if (fGetterName.getText().isEmpty())
 			fGetterInfo.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_no_getter_name);
 		else
 			fGetterInfo.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_usenewsetter_label);
 		updateEnablements();
 	}

 	private void loadSettings() {
 		fSettings= getDialogSettings().getSection(SelfEncapsulateFieldWizard.DIALOG_SETTING_SECTION);
 		if (fSettings == null) {
 			fSettings= getDialogSettings().addNewSection(SelfEncapsulateFieldWizard.DIALOG_SETTING_SECTION);
 			fSettings.put(GENERATE_JAVADOC, JavaPreferencesSettings.getCodeGenerationSettings(fRefactoring.getField().getJavaProject()).createComments);
 		}
 		fRefactoring.setGenerateJavadoc(fSettings.getBoolean(GENERATE_JAVADOC));
 	}

 	private void createAccessModifier(Composite result) {
 		int visibility= fRefactoring.getVisibility();
 		if (Flags.isPublic(visibility))
 			return;

 		Label label= new Label(result, SWT.NONE);
 		label.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_access_Modifiers);
 		fEnablements.add(label);

 		Composite group= new Composite(result, SWT.NONE);
 		group.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 2, 1));

 		GridLayout layout= new GridLayout(4, false);
 		layout.marginWidth= 0;
 		layout.marginHeight= 0;
 		group.setLayout(layout);

 		group.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

 		Object[] info= createData(visibility);
 		String[] labels= (String[])info[0];
 		Integer[] data= (Integer[])info[1];
 		for (int i= 0; i < labels.length; i++) {
 			Button radio= new Button(group, SWT.RADIO);
 			radio.setText(labels[i]);
 			radio.setData(data[i]);
 			int iData= data[i].intValue();
 			if (iData == visibility)
 				radio.setSelection(true);
 			radio.addSelectionListener(new SelectionAdapter() {
 				@Override
 				public void widgetSelected(SelectionEvent event) {
 					fRefactoring.setVisibility(((Integer)event.widget.getData()).intValue());
 				}
 			});
 			fEnablements.add(radio);
 		}
 	}

 	private void createFieldAccessBlock(Composite result) {
 		Label label= new Label(result, SWT.LEFT);
 		label.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_field_access);
 		label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));

 		Composite group= new Composite(result, SWT.NONE);
 		GridLayout layout= new GridLayout(2, false);
 		layout.marginWidth= 0;
 		layout.marginHeight= 0;
 		group.setLayout(layout);

 		group.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 2, 1));

 		Button radio= new Button(group, SWT.RADIO);
 		radio.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_use_setter_getter);
 		radio.setSelection(true);
 		radio.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				fRefactoring.setEncapsulateDeclaringClass(true);
 			}
 		});
 		radio.setLayoutData(new GridData());

 		radio= new Button(group, SWT.RADIO);
 		radio.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_keep_references);
 		radio.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				fRefactoring.setEncapsulateDeclaringClass(false);
 			}
 		});
 		radio.setLayoutData(new GridData());
 	}

 	private Object[] createData(int visibility) {
 		String pub= RefactoringMessages.SelfEncapsulateFieldInputPage_public;
 		String pro= RefactoringMessages.SelfEncapsulateFieldInputPage_protected;
 		String def= RefactoringMessages.SelfEncapsulateFieldInputPage_default;
 		String priv= RefactoringMessages.SelfEncapsulateFieldInputPage_private;

 		String[] labels= null;
 		Integer[] data= null;
 		if (Flags.isPrivate(visibility)) {
 			labels= new String[] { pub, pro, def, priv };
 			data= new Integer[] {Integer.valueOf(Flags.AccPublic), Integer.valueOf(Flags.AccProtected), Integer.valueOf(0), Integer.valueOf(Flags.AccPrivate) };
 		} else if (Flags.isProtected(visibility)) {
 			labels= new String[] { pub, pro };
 			data= new Integer[] {Integer.valueOf(Flags.AccPublic), Integer.valueOf(Flags.AccProtected)};
 		} else {
 			labels= new String[] { pub, def };
 			data= new Integer[] {Integer.valueOf(Flags.AccPublic), Integer.valueOf(0)};
 		}
 		return new Object[] {labels, data};
 	}

 	private void fillWithPossibleInsertPositions(Combo combo, IField field) {
 		int select= 0;
 		combo.add(RefactoringMessages.SelfEncapsulateFieldInputPage_first_method);
 		try {
 			IMethod[] methods= field.getDeclaringType().getMethods();
 			for (int i= 0; i < methods.length; i++) {
 				combo.add(JavaElementLabels.getElementLabel(methods[i], JavaElementLabels.M_PARAMETER_TYPES));
 			}
 			if (methods.length > 0)
 				select= methods.length;
 		} catch (JavaModelException e) {
 			// Fall through
 		}
 		combo.select(select);
 		fRefactoring.setInsertionIndex(select - 1);
 	}

 	private void setGenerateJavadoc(boolean value) {
 		fSettings.put(GENERATE_JAVADOC, value);
 		fRefactoring.setGenerateJavadoc(value);
 	}

 	private void processValidation() {
 		RefactoringStatus status= fRefactoring.checkMethodNames();
 		String message= null;
 		boolean valid= true;
 		if (status.hasFatalError()) {
 			message= status.getMessageMatchingSeverity(RefactoringStatus.FATAL);
 			valid= false;
 		}
 		if (fGenerateGetter.getSelection() && fGetterName.getText().isEmpty()) {
 			message= RefactoringMessages.SelfEncapsulateFieldInputPage_no_getter_name;
 			valid= false;
 		} else if (fGenerateSetter.getSelection() && fSetterName.getText().isEmpty()) {
 			message= RefactoringMessages.SelfEncapsulateFieldInputPage_no_setter_name;
 			valid= false;
 		} else if (!fGenerateGetter.getSelection() && !fGenerateSetter.getSelection()) {
 			message= RefactoringMessages.SelfEncapsulateFieldInputPage_please_choose_to_generate_a_getter_setter;
 			valid= false;
 		}
 		setErrorMessage(message);
 		setPageComplete(valid);
 	}

 	private boolean needsSetter() {
 		try {
 			return !JdtFlags.isFinal(fRefactoring.getField());
 		} catch(JavaModelException e) {
 			return true;
 		}
 	}

 	private void doOpenPreference() {
 		String id= CodeStylePreferencePage.PROP_ID;
 		IJavaProject project= fRefactoring.getField().getJavaProject();

 		String[] relevantOptions= getRelevantOptions(project);

 		int open= PreferencesUtil.createPropertyDialogOn(getShell(), project, id, new String[] { id }, null).open();
 		if (open == Window.OK && !Arrays.equals(relevantOptions, getRelevantOptions(project))) { // relevant options changes
 			fRefactoring.reinitialize();
 			fGetterName.setText(fRefactoring.getGetterName());
 			fSetterName.setText(fRefactoring.getSetterName());
 		}
 	}

 	private String[] getRelevantOptions(IJavaProject project) {
 		return new String[] {
 			project.getOption(JavaCore.CODEASSIST_FIELD_PREFIXES, true),
 			project.getOption(JavaCore.CODEASSIST_FIELD_SUFFIXES, true),
 			PreferenceConstants.getPreference(PreferenceConstants.CODEGEN_IS_FOR_GETTERS, project)
 		};
 	}

 	private void doSetterModified() {
 		fRefactoring.setSetterName(fSetterName.getText());
 		updateUseSetter();
 		processValidation();
 	}

 	private void doGetterModified() {
 		fRefactoring.setGetterName(fGetterName.getText());
 		updateUseGetter();
 		processValidation();
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2019 IBM Corporation and others.
	*
	* This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/

	package org.eclipse.jdt.internal.ui.refactoring.sef;

	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.Iterator;
	import java.util.List;

	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.Combo;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Link;
	import org.eclipse.swt.widgets.Text;

	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.dialogs.IDialogSettings;
	import org.eclipse.jface.window.Window;

	import org.eclipse.ui.PlatformUI;
	import org.eclipse.ui.dialogs.PreferencesUtil;

	import org.eclipse.ltk.core.refactoring.RefactoringStatus;
	import org.eclipse.ltk.ui.refactoring.UserInputWizardPage;

	import org.eclipse.jdt.core.Flags;
	import org.eclipse.jdt.core.IField;
	import org.eclipse.jdt.core.IJavaProject;
	import org.eclipse.jdt.core.IMethod;
	import org.eclipse.jdt.core.JavaCore;
	import org.eclipse.jdt.core.JavaModelException;

	import org.eclipse.jdt.internal.corext.refactoring.sef.SelfEncapsulateFieldRefactoring;
	import org.eclipse.jdt.internal.corext.util.JdtFlags;

	import org.eclipse.jdt.ui.JavaElementLabels;
	import org.eclipse.jdt.ui.PreferenceConstants;

	import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
	import org.eclipse.jdt.internal.ui.JavaPluginImages;
	import org.eclipse.jdt.internal.ui.dialogs.TextFieldNavigationHandler;
	import org.eclipse.jdt.internal.ui.preferences.CodeStylePreferencePage;
	import org.eclipse.jdt.internal.ui.preferences.JavaPreferencesSettings;
	import org.eclipse.jdt.internal.ui.refactoring.RefactoringMessages;
	import org.eclipse.jdt.internal.ui.util.SWTUtil;

	public class SelfEncapsulateFieldInputPage extends UserInputWizardPage {

	private SelfEncapsulateFieldRefactoring fRefactoring;
	private IDialogSettings fSettings;
	private List<Control> fEnablements;

	private Text fGetterName;
	private Text fSetterName;

	private Label fGetterInfo;
	private Label fSetterInfo;

	private String fOldSetterValue= ""; //$NON-NLS-1$
	private String fOldGetterValue= ""; //$NON-NLS-1$

	private Button fGenerateGetter;
	private Button fGenerateSetter;

	private static final String GENERATE_JAVADOC= "GenerateJavadoc"; //$NON-NLS-1$

	public SelfEncapsulateFieldInputPage() {
	super("InputPage"); //$NON-NLS-1$
	setDescription(RefactoringMessages.SelfEncapsulateFieldInputPage_description);
	setImageDescriptor(JavaPluginImages.DESC_WIZBAN_REFACTOR_CU);
	}

	@Override
	public void createControl(Composite parent) {
	fRefactoring= (SelfEncapsulateFieldRefactoring)getRefactoring();

	fEnablements= new ArrayList<>();
	loadSettings();

	Composite result= new Composite(parent, SWT.NONE);
	setControl(result);
	initializeDialogUnits(result);

	result.setLayout(new GridLayout(3, false));

	Composite nameComposite= new Composite(result, SWT.NONE);
	nameComposite.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 3, 1));

	GridLayout gridLayout= new GridLayout(3, false);
	gridLayout.marginHeight= 0;
	gridLayout.marginWidth= 0;

	nameComposite.setLayout(gridLayout);
	fGenerateGetter= new Button(nameComposite, SWT.CHECK);
	fGenerateGetter.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_getter_name);
	fGenerateGetter.setSelection(true);
	fGenerateGetter.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	if (fGenerateGetter.getSelection()) {
	fGetterName.setEnabled(true);
	fGetterName.setText(fOldGetterValue);
	} else {
	fOldGetterValue= fGetterName.getText();
	fGetterName.setText(""); //$NON-NLS-1$
	fGetterName.setEnabled(false);
	}
	doGetterModified();
	}
	});
	fGenerateGetter.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));

	fGetterName= new Text(nameComposite, SWT.BORDER);
	fGetterName.setText(fRefactoring.getGetterName());
	GridData gd= new GridData(GridData.FILL_HORIZONTAL);
	gd.widthHint= convertWidthInCharsToPixels(25);
	fGetterName.setLayoutData(gd);
	fGetterName.addModifyListener(new ModifyListener() {
	@Override
	public void modifyText(ModifyEvent e) {
	doGetterModified();
	}
	});
	TextFieldNavigationHandler.install(fGetterName);


	fGetterInfo= new Label(nameComposite, SWT.LEAD);
	fGetterInfo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	updateUseGetter();

	fGenerateSetter= new Button(nameComposite, SWT.CHECK);
	fGenerateSetter.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_setter_name);
	fGenerateSetter.setEnabled(needsSetter());
	fGenerateSetter.setSelection(needsSetter());
	fGenerateSetter.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	if (fGenerateSetter.getSelection()) {
	fSetterName.setEnabled(true);
	fSetterName.setText(fOldSetterValue);
	} else {
	fOldSetterValue= fSetterName.getText();
	fSetterName.setText(""); //$NON-NLS-1$
	fSetterName.setEnabled(false);
	}
	doSetterModified();
	}
	});
	fGenerateSetter.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));

	fSetterName= new Text(nameComposite, SWT.BORDER);
	if(needsSetter()) {
	fSetterName.setText(fRefactoring.getSetterName());
	} else {
	fSetterName.setText(""); //$NON-NLS-1$
	fSetterName.setEnabled(false);
	}
	gd= new GridData(GridData.FILL_HORIZONTAL);
	gd.widthHint= convertWidthInCharsToPixels(25);
	fSetterName.setLayoutData(gd);
	fSetterName.addModifyListener(new ModifyListener() {
	@Override
	public void modifyText(ModifyEvent e) {
	doSetterModified();
	}
	});
	TextFieldNavigationHandler.install(fSetterName);

	fSetterInfo= new Label(nameComposite, SWT.LEAD);
	fSetterInfo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	updateUseSetter();

	Link link= new Link(nameComposite, SWT.NONE);
	link.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_configure_link);
	link.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	doOpenPreference();
	}
	});
	link.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 3, 1));

	Label separator= new Label(result, SWT.NONE);
	separator.setText(""); //$NON-NLS-1$
	separator.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 3, 1));

	createFieldAccessBlock(result);

	Label label= new Label(result, SWT.LEFT);
	label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));
	label.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_insert_after);
	fEnablements.add(label);

	final Combo combo= new Combo(result, SWT.READ_ONLY);
	SWTUtil.setDefaultVisibleItemCount(combo);
	fillWithPossibleInsertPositions(combo, fRefactoring.getField());
	combo.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent event) {
	fRefactoring.setInsertionIndex(combo.getSelectionIndex() - 1);
	}
	});
	combo.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 2, 1));
	fEnablements.add(combo);

	createAccessModifier(result);

	Button checkBox= new Button(result, SWT.CHECK);
	checkBox.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_generateJavadocComment);
	checkBox.setSelection(fRefactoring.getGenerateJavadoc());
	checkBox.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	setGenerateJavadoc(((Button)e.widget).getSelection());
	}
	});
	checkBox.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 3, 1));

	fEnablements.add(checkBox);

	updateEnablements();

	processValidation();

	fGetterName.setFocus();

	Dialog.applyDialogFont(result);
	PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), IJavaHelpContextIds.SEF_WIZARD_PAGE);
	}

	private void updateUseSetter() {
	if(!needsSetter()) {
	fGenerateSetter.setSelection(false);
	fGenerateSetter.setEnabled(false);
	fSetterInfo.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_final_field);
	} else if (fGenerateSetter.getSelection() == false)
	fSetterInfo.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_no_setter_created);
	else if (fSetterName.getText().isEmpty())
	fSetterInfo.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_no_setter_name);
	else if (fRefactoring.isUsingLocalSetter())
	fSetterInfo.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_useexistingsetter_label);
	else
	fSetterInfo.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_usenewgetter_label);
	updateEnablements();
	}

	private void updateEnablements() {
	boolean enable=!(fRefactoring.isUsingLocalSetter()&&fRefactoring.isUsingLocalGetter());
	for (Iterator<Control> iter= fEnablements.iterator(); iter.hasNext();) {
	Control control= iter.next();
	control.setEnabled(enable);
	}
	}

	private void updateUseGetter() {
	if (fGenerateGetter.getSelection() == false)
	fGetterInfo.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_no_getter_created);
	else if (fRefactoring.isUsingLocalGetter())
	fGetterInfo.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_useexistinggetter_label);
	else if (fGetterName.getText().isEmpty())
	fGetterInfo.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_no_getter_name);
	else
	fGetterInfo.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_usenewsetter_label);
	updateEnablements();
	}

	private void loadSettings() {
	fSettings= getDialogSettings().getSection(SelfEncapsulateFieldWizard.DIALOG_SETTING_SECTION);
	if (fSettings == null) {
	fSettings= getDialogSettings().addNewSection(SelfEncapsulateFieldWizard.DIALOG_SETTING_SECTION);
	fSettings.put(GENERATE_JAVADOC, JavaPreferencesSettings.getCodeGenerationSettings(fRefactoring.getField().getJavaProject()).createComments);
	}
	fRefactoring.setGenerateJavadoc(fSettings.getBoolean(GENERATE_JAVADOC));
	}

	private void createAccessModifier(Composite result) {
	int visibility= fRefactoring.getVisibility();
	if (Flags.isPublic(visibility))
	return;

	Label label= new Label(result, SWT.NONE);
	label.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_access_Modifiers);
	fEnablements.add(label);

	Composite group= new Composite(result, SWT.NONE);
	group.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 2, 1));

	GridLayout layout= new GridLayout(4, false);
	layout.marginWidth= 0;
	layout.marginHeight= 0;
	group.setLayout(layout);

	group.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	Object[] info= createData(visibility);
	String[] labels= (String[])info[0];
	Integer[] data= (Integer[])info[1];
	for (int i= 0; i < labels.length; i++) {
	Button radio= new Button(group, SWT.RADIO);
	radio.setText(labels[i]);
	radio.setData(data[i]);
	int iData= data[i].intValue();
	if (iData == visibility)
	radio.setSelection(true);
	radio.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent event) {
	fRefactoring.setVisibility(((Integer)event.widget.getData()).intValue());
	}
	});
	fEnablements.add(radio);
	}
	}

	private void createFieldAccessBlock(Composite result) {
	Label label= new Label(result, SWT.LEFT);
	label.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_field_access);
	label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));

	Composite group= new Composite(result, SWT.NONE);
	GridLayout layout= new GridLayout(2, false);
	layout.marginWidth= 0;
	layout.marginHeight= 0;
	group.setLayout(layout);

	group.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 2, 1));

	Button radio= new Button(group, SWT.RADIO);
	radio.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_use_setter_getter);
	radio.setSelection(true);
	radio.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	fRefactoring.setEncapsulateDeclaringClass(true);
	}
	});
	radio.setLayoutData(new GridData());

	radio= new Button(group, SWT.RADIO);
	radio.setText(RefactoringMessages.SelfEncapsulateFieldInputPage_keep_references);
	radio.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	fRefactoring.setEncapsulateDeclaringClass(false);
	}
	});
	radio.setLayoutData(new GridData());
	}

	private Object[] createData(int visibility) {
	String pub= RefactoringMessages.SelfEncapsulateFieldInputPage_public;
	String pro= RefactoringMessages.SelfEncapsulateFieldInputPage_protected;
	String def= RefactoringMessages.SelfEncapsulateFieldInputPage_default;
	String priv= RefactoringMessages.SelfEncapsulateFieldInputPage_private;

	String[] labels= null;
	Integer[] data= null;
	if (Flags.isPrivate(visibility)) {
	labels= new String[] { pub, pro, def, priv };
	data= new Integer[] {Integer.valueOf(Flags.AccPublic), Integer.valueOf(Flags.AccProtected), Integer.valueOf(0), Integer.valueOf(Flags.AccPrivate) };
	} else if (Flags.isProtected(visibility)) {
	labels= new String[] { pub, pro };
	data= new Integer[] {Integer.valueOf(Flags.AccPublic), Integer.valueOf(Flags.AccProtected)};
	} else {
	labels= new String[] { pub, def };
	data= new Integer[] {Integer.valueOf(Flags.AccPublic), Integer.valueOf(0)};
	}
	return new Object[] {labels, data};
	}

	private void fillWithPossibleInsertPositions(Combo combo, IField field) {
	int select= 0;
	combo.add(RefactoringMessages.SelfEncapsulateFieldInputPage_first_method);
	try {
	IMethod[] methods= field.getDeclaringType().getMethods();
	for (int i= 0; i < methods.length; i++) {
	combo.add(JavaElementLabels.getElementLabel(methods[i], JavaElementLabels.M_PARAMETER_TYPES));
	}
	if (methods.length > 0)
	select= methods.length;
	} catch (JavaModelException e) {
	// Fall through
	}
	combo.select(select);
	fRefactoring.setInsertionIndex(select - 1);
	}

	private void setGenerateJavadoc(boolean value) {
	fSettings.put(GENERATE_JAVADOC, value);
	fRefactoring.setGenerateJavadoc(value);
	}

	private void processValidation() {
	RefactoringStatus status= fRefactoring.checkMethodNames();
	String message= null;
	boolean valid= true;
	if (status.hasFatalError()) {
	message= status.getMessageMatchingSeverity(RefactoringStatus.FATAL);
	valid= false;
	}
	if (fGenerateGetter.getSelection() && fGetterName.getText().isEmpty()) {
	message= RefactoringMessages.SelfEncapsulateFieldInputPage_no_getter_name;
	valid= false;
	} else if (fGenerateSetter.getSelection() && fSetterName.getText().isEmpty()) {
	message= RefactoringMessages.SelfEncapsulateFieldInputPage_no_setter_name;
	valid= false;
	} else if (!fGenerateGetter.getSelection() && !fGenerateSetter.getSelection()) {
	message= RefactoringMessages.SelfEncapsulateFieldInputPage_please_choose_to_generate_a_getter_setter;
	valid= false;
	}
	setErrorMessage(message);
	setPageComplete(valid);
	}

	private boolean needsSetter() {
	try {
	return !JdtFlags.isFinal(fRefactoring.getField());
	} catch(JavaModelException e) {
	return true;
	}
	}

	private void doOpenPreference() {
	String id= CodeStylePreferencePage.PROP_ID;
	IJavaProject project= fRefactoring.getField().getJavaProject();

	String[] relevantOptions= getRelevantOptions(project);

	int open= PreferencesUtil.createPropertyDialogOn(getShell(), project, id, new String[] { id }, null).open();
	if (open == Window.OK && !Arrays.equals(relevantOptions, getRelevantOptions(project))) { // relevant options changes
	fRefactoring.reinitialize();
	fGetterName.setText(fRefactoring.getGetterName());
	fSetterName.setText(fRefactoring.getSetterName());
	}
	}

	private String[] getRelevantOptions(IJavaProject project) {
	return new String[] {
	project.getOption(JavaCore.CODEASSIST_FIELD_PREFIXES, true),
	project.getOption(JavaCore.CODEASSIST_FIELD_SUFFIXES, true),
	PreferenceConstants.getPreference(PreferenceConstants.CODEGEN_IS_FOR_GETTERS, project)
	};
	}

	private void doSetterModified() {
	fRefactoring.setSetterName(fSetterName.getText());
	updateUseSetter();
	processValidation();
	}

	private void doGetterModified() {
	fRefactoring.setGetterName(fGetterName.getText());
	updateUseGetter();
	processValidation();
	}
	}