org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/actions/GenerateConstructorUsingFieldsSelectionDialog.java - jdt/eclipse.jdt.ui - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2018 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.actions;

 import java.util.ArrayList;
 import java.util.List;

 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.events.SelectionListener;
 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.Shell;

 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.jface.viewers.CheckboxTreeViewer;
 import org.eclipse.jface.viewers.DoubleClickEvent;
 import org.eclipse.jface.viewers.IDoubleClickListener;
 import org.eclipse.jface.viewers.ILabelProvider;
 import org.eclipse.jface.viewers.ISelectionChangedListener;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.SelectionChangedEvent;

 import org.eclipse.ui.PlatformUI;

 import org.eclipse.jdt.core.IType;
 import org.eclipse.jdt.core.JavaModelException;
 import org.eclipse.jdt.core.dom.IMethodBinding;
 import org.eclipse.jdt.core.dom.Modifier;

 import org.eclipse.jdt.internal.core.manipulation.CodeTemplateContextType;

 import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
 import org.eclipse.jdt.internal.ui.JavaPlugin;
 import org.eclipse.jdt.internal.ui.dialogs.SourceActionDialog;
 import org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor;
 import org.eclipse.jdt.internal.ui.refactoring.IVisibilityChangeListener;
 import org.eclipse.jdt.internal.ui.util.SWTUtil;
 import org.eclipse.jdt.internal.ui.viewsupport.BindingLabelProvider;

 public class GenerateConstructorUsingFieldsSelectionDialog extends SourceActionDialog {

 	class GenerateConstructorUsingFieldsTreeViewerAdapter implements ISelectionChangedListener, IDoubleClickListener {

 		@Override
 		public void doubleClick(DoubleClickEvent event) {
 			// Do nothing
 		}

 		@Override
 		public void selectionChanged(SelectionChangedEvent event) {
 			IStructuredSelection selection= (IStructuredSelection) getTreeViewer().getSelection();

 			List<?> selectedList= selection.toList();
 			GenerateConstructorUsingFieldsContentProvider cp= (GenerateConstructorUsingFieldsContentProvider) getContentProvider();

 			fButtonControls[GenerateConstructorUsingFieldsSelectionDialog.UP_INDEX].setEnabled(cp.canMoveUp(selectedList));
 			fButtonControls[GenerateConstructorUsingFieldsSelectionDialog.DOWN_INDEX].setEnabled(cp.canMoveDown(selectedList));
 		}
 	}

 	private static final int DOWN_BUTTON= IDialogConstants.CLIENT_ID + 2;

 	private static final int UP_BUTTON= IDialogConstants.CLIENT_ID + 1;

 	protected Button[] fButtonControls;

 	boolean[] fButtonsEnabled;

 	IDialogSettings fGenConstructorSettings;

 	int fHeight= 18;

 	boolean fOmitSuper;

 	Button fOmitSuperButton;

 	IMethodBinding[] fSuperConstructors;

 	int fSuperIndex;

 	GenerateConstructorUsingFieldsTreeViewerAdapter fTreeViewerAdapter;

 	int fWidth= 60;

 	final String OMIT_SUPER= "OmitCallToSuper"; //$NON-NLS-1$

 	final String SETTINGS_SECTION= "GenerateConstructorUsingFieldsSelectionDialog"; //$NON-NLS-1$

 	private static final int DOWN_INDEX= 1;

 	private static final int UP_INDEX= 0;

 	public GenerateConstructorUsingFieldsSelectionDialog(Shell parent, ILabelProvider labelProvider, GenerateConstructorUsingFieldsContentProvider contentProvider, CompilationUnitEditor editor, IType type, IMethodBinding[] superConstructors) throws JavaModelException {
 		super(parent, labelProvider, contentProvider, editor, type, true);
 		fTreeViewerAdapter= new GenerateConstructorUsingFieldsTreeViewerAdapter();

 		fSuperConstructors= superConstructors;

 		IDialogSettings dialogSettings= JavaPlugin.getDefault().getDialogSettings();
 		fGenConstructorSettings= dialogSettings.getSection(SETTINGS_SECTION);
 		if (fGenConstructorSettings == null) {
 			fGenConstructorSettings= dialogSettings.addNewSection(SETTINGS_SECTION);
 			fGenConstructorSettings.put(OMIT_SUPER, false);
 		}

 		final boolean isEnum= type.isEnum();
 		fOmitSuper= fGenConstructorSettings.getBoolean(OMIT_SUPER) || isEnum;
 		if (isEnum)
 			setVisibility(Modifier.PRIVATE);
 	}

 	Composite addSuperClassConstructorChoices(Composite composite) {
 		Label label= new Label(composite, SWT.NONE);
 		label.setText(ActionMessages.GenerateConstructorUsingFieldsSelectionDialog_sort_constructor_choices_label);
 		GridData gd= new GridData(GridData.FILL_HORIZONTAL);
 		label.setLayoutData(gd);

 		BindingLabelProvider provider= new BindingLabelProvider();
 		final Combo combo= new Combo(composite, SWT.READ_ONLY);
 		SWTUtil.setDefaultVisibleItemCount(combo);
 		for (int i= 0; i < fSuperConstructors.length; i++) {
 			combo.add(provider.getText(fSuperConstructors[i]));
 		}

 		// TODO: Can we be a little more intelligent about guessing the super() ?
 		combo.setText(combo.getItem(0));
 		combo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 		combo.addSelectionListener(new SelectionAdapter() {

 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				fSuperIndex= combo.getSelectionIndex();
 				// Disable omit super checkbox unless default constructor
 				fOmitSuperButton.setEnabled(getSuperConstructorChoice().getParameterTypes().length == 0);
 				updateOKStatus();
 			}
 		});

 		return composite;
 	}

 	@Override
 	protected void createButtonsForButtonBar(Composite parent) {
 		createButton(parent, IDialogConstants.OK_ID, ActionMessages.GenerateConstructorUsingFieldsSelectionDialog_button_generate, true);
 		createButton(parent, IDialogConstants.CANCEL_ID, IDialogConstants.CANCEL_LABEL, false);
 	}

 	@Override
 	protected void buttonPressed(int buttonId) {
 		super.buttonPressed(buttonId);
 		switch (buttonId) {
 			case UP_BUTTON: {
 				GenerateConstructorUsingFieldsContentProvider contentProvider= (GenerateConstructorUsingFieldsContentProvider) getTreeViewer().getContentProvider();
 				contentProvider.up(getElementList(), getTreeViewer());
 				updateOKStatus();
 				break;
 			}
 			case DOWN_BUTTON: {
 				GenerateConstructorUsingFieldsContentProvider contentProvider= (GenerateConstructorUsingFieldsContentProvider) getTreeViewer().getContentProvider();
 				contentProvider.down(getElementList(), getTreeViewer());
 				updateOKStatus();
 				break;
 			}
 		}
 	}

 	@Override
 	protected void configureShell(Shell shell) {
 		super.configureShell(shell);
 		PlatformUI.getWorkbench().getHelpSystem().setHelp(shell, IJavaHelpContextIds.GENERATE_CONSTRUCTOR_USING_FIELDS_SELECTION_DIALOG);
 	}

 	@Override
 	protected Control createDialogArea(Composite parent) {
 		initializeDialogUnits(parent);

 		Composite composite= new Composite(parent, SWT.NONE);
 		GridLayout layout= new GridLayout();
 		GridData gd= null;

 		layout.marginHeight= convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
 		layout.marginWidth= convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
 		layout.verticalSpacing= convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
 		layout.horizontalSpacing= convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
 		composite.setLayout(layout);

 		Composite classConstructorComposite= addSuperClassConstructorChoices(composite);
 		gd= new GridData(GridData.FILL_BOTH);
 		classConstructorComposite.setLayoutData(gd);

 		Composite inner= new Composite(composite, SWT.NONE);
 		GridLayout innerLayout= new GridLayout();
 		innerLayout.numColumns= 2;
 		innerLayout.marginHeight= 0;
 		innerLayout.marginWidth= 0;
 		inner.setLayout(innerLayout);

 		Label messageLabel= createMessageArea(inner);
 		if (messageLabel != null) {
 			gd= new GridData(GridData.HORIZONTAL_ALIGN_FILL);
 			gd.horizontalSpan= 2;
 			messageLabel.setLayoutData(gd);
 		}

 		CheckboxTreeViewer treeViewer= createTreeViewer(inner);
 		gd= new GridData(GridData.FILL_BOTH);
 		gd.widthHint= convertWidthInCharsToPixels(fWidth);
 		gd.heightHint= convertHeightInCharsToPixels(fHeight);
 		treeViewer.getControl().setLayoutData(gd);
 		treeViewer.addSelectionChangedListener(fTreeViewerAdapter);

 		Composite buttonComposite= createSelectionButtons(inner);
 		gd= new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL);
 		buttonComposite.setLayoutData(gd);

 		gd= new GridData(GridData.FILL_BOTH);
 		inner.setLayoutData(gd);

 		Composite entryComposite= createInsertPositionCombo(composite);
 		entryComposite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

 		Composite commentComposite= createCommentSelection(composite);
 		commentComposite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

 		Composite overrideSuperComposite= createOmitSuper(composite);
 		overrideSuperComposite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

 		Control linkControl= createLinkControl(composite);
 		if (linkControl != null)
 			linkControl.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

 		gd= new GridData(GridData.FILL_BOTH);
 		composite.setLayoutData(gd);

 		applyDialogFont(composite);

 		return composite;
 	}

 	@Override
 	protected Composite createInsertPositionCombo(Composite composite) {
 		Composite entryComposite= super.createInsertPositionCombo(composite);
 		addVisibilityAndModifiersChoices(entryComposite);
 		return entryComposite;
 	}

 	/*
 	 * @see org.eclipse.jdt.internal.ui.dialogs.SourceActionDialog#createLinkControl(org.eclipse.swt.widgets.Composite)
 	 */
 	@Override
 	protected Control createLinkControl(Composite composite) {
 		Link link= new Link(composite, SWT.WRAP);
 		link.setText(ActionMessages.GenerateConstructorUsingFieldsSelectionDialog_template_link_message);
 		link.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				openCodeTempatePage(CodeTemplateContextType.CONSTRUCTORCOMMENT_ID);
 			}
 		});
 		link.setToolTipText(ActionMessages.GenerateConstructorUsingFieldsSelectionDialog_template_link_tooltip);

 		GridData gridData= new GridData(SWT.FILL, SWT.BEGINNING, true, false);
 		gridData.widthHint= convertWidthInCharsToPixels(40); // only expand further if anyone else requires it
 		link.setLayoutData(gridData);
 		return link;
 	}

 	protected Composite createOmitSuper(Composite composite) {
 		Composite omitSuperComposite= new Composite(composite, SWT.NONE);
 		GridLayout layout= new GridLayout();
 		layout.marginHeight= 0;
 		layout.marginWidth= 0;
 		omitSuperComposite.setLayout(layout);

 		fOmitSuperButton= new Button(omitSuperComposite, SWT.CHECK);
 		fOmitSuperButton.setText(ActionMessages.GenerateConstructorUsingFieldsSelectionDialog_omit_super);
 		fOmitSuperButton.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));

 		fOmitSuperButton.addSelectionListener(new SelectionListener() {

 			@Override
 			public void widgetDefaultSelected(SelectionEvent e) {
 				widgetSelected(e);
 			}

 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				boolean isSelected= (((Button) e.widget).getSelection());
 				setOmitSuper(isSelected);
 			}
 		});
 		fOmitSuperButton.setSelection(isOmitSuper());
 		try {
 			// Disable omit super checkbox unless default constructor and enum
 			final boolean hasContructor= getSuperConstructorChoice().getParameterTypes().length == 0;
 			fOmitSuperButton.setEnabled(hasContructor && !getType().isEnum());
 		} catch (JavaModelException exception) {
 			JavaPlugin.log(exception);
 		}
 		GridData gd= new GridData(GridData.HORIZONTAL_ALIGN_FILL);
 		gd.horizontalSpan= 2;
 		fOmitSuperButton.setLayoutData(gd);

 		return omitSuperComposite;
 	}

 	@Override
 	protected Composite createSelectionButtons(Composite composite) {
 		Composite buttonComposite= super.createSelectionButtons(composite);

 		GridLayout layout= new GridLayout();
 		buttonComposite.setLayout(layout);

 		createUpDownButtons(buttonComposite);

 		layout.marginHeight= 0;
 		layout.marginWidth= 0;
 		layout.numColumns= 1;

 		return buttonComposite;
 	}

 	void createUpDownButtons(Composite buttonComposite) {
 		int numButtons= 2; // up, down
 		fButtonControls= new Button[numButtons];
 		fButtonsEnabled= new boolean[numButtons];
 		fButtonControls[GenerateConstructorUsingFieldsSelectionDialog.UP_INDEX]= createButton(buttonComposite, UP_BUTTON, ActionMessages.GenerateConstructorUsingFieldsSelectionDialog_up_button,false);
 		fButtonControls[GenerateConstructorUsingFieldsSelectionDialog.DOWN_INDEX]= createButton(buttonComposite, DOWN_BUTTON, ActionMessages.GenerateConstructorUsingFieldsSelectionDialog_down_button,false);
 		boolean defaultState= false;
 		fButtonControls[GenerateConstructorUsingFieldsSelectionDialog.UP_INDEX].setEnabled(defaultState);
 		fButtonControls[GenerateConstructorUsingFieldsSelectionDialog.DOWN_INDEX].setEnabled(defaultState);
 		fButtonsEnabled[GenerateConstructorUsingFieldsSelectionDialog.UP_INDEX]= defaultState;
 		fButtonsEnabled[GenerateConstructorUsingFieldsSelectionDialog.DOWN_INDEX]= defaultState;
 	}

 	@Override
 	protected Composite createVisibilityControlAndModifiers(Composite parent, final IVisibilityChangeListener visibilityChangeListener, int[] availableVisibilities, int correctVisibility) {
 		int[] visibilities= availableVisibilities;
 		try {
 			if (getType().isEnum())
 				visibilities= new int[] { };
 		} catch (JavaModelException exception) {
 			JavaPlugin.log(exception);
 		}
 		return createVisibilityControl(parent, visibilityChangeListener, visibilities, correctVisibility);
 	}

 	List<?> getElementList() {
 		IStructuredSelection selection= (IStructuredSelection) getTreeViewer().getSelection();
 		List<?> elements= selection.toList();
 		ArrayList<Object> elementList= new ArrayList<>();

 		for (int i= 0; i < elements.size(); i++) {
 			elementList.add(elements.get(i));
 		}
 		return elementList;
 	}

 	public IMethodBinding getSuperConstructorChoice() {
 		return fSuperConstructors[fSuperIndex];
 	}

 	public boolean isOmitSuper() {
 		return fOmitSuper;
 	}

 	public void setOmitSuper(boolean omitSuper) {
 		if (fOmitSuper != omitSuper) {
 			fOmitSuper= omitSuper;
 			fGenConstructorSettings.put(OMIT_SUPER, omitSuper);
 		}
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2018 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.actions;

	import java.util.ArrayList;
	import java.util.List;

	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.events.SelectionListener;
	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.Shell;

	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.dialogs.IDialogSettings;
	import org.eclipse.jface.viewers.CheckboxTreeViewer;
	import org.eclipse.jface.viewers.DoubleClickEvent;
	import org.eclipse.jface.viewers.IDoubleClickListener;
	import org.eclipse.jface.viewers.ILabelProvider;
	import org.eclipse.jface.viewers.ISelectionChangedListener;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.SelectionChangedEvent;

	import org.eclipse.ui.PlatformUI;

	import org.eclipse.jdt.core.IType;
	import org.eclipse.jdt.core.JavaModelException;
	import org.eclipse.jdt.core.dom.IMethodBinding;
	import org.eclipse.jdt.core.dom.Modifier;

	import org.eclipse.jdt.internal.core.manipulation.CodeTemplateContextType;

	import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
	import org.eclipse.jdt.internal.ui.JavaPlugin;
	import org.eclipse.jdt.internal.ui.dialogs.SourceActionDialog;
	import org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor;
	import org.eclipse.jdt.internal.ui.refactoring.IVisibilityChangeListener;
	import org.eclipse.jdt.internal.ui.util.SWTUtil;
	import org.eclipse.jdt.internal.ui.viewsupport.BindingLabelProvider;

	public class GenerateConstructorUsingFieldsSelectionDialog extends SourceActionDialog {

	class GenerateConstructorUsingFieldsTreeViewerAdapter implements ISelectionChangedListener, IDoubleClickListener {

	@Override
	public void doubleClick(DoubleClickEvent event) {
	// Do nothing
	}

	@Override
	public void selectionChanged(SelectionChangedEvent event) {
	IStructuredSelection selection= (IStructuredSelection) getTreeViewer().getSelection();

	List<?> selectedList= selection.toList();
	GenerateConstructorUsingFieldsContentProvider cp= (GenerateConstructorUsingFieldsContentProvider) getContentProvider();

	fButtonControls[GenerateConstructorUsingFieldsSelectionDialog.UP_INDEX].setEnabled(cp.canMoveUp(selectedList));
	fButtonControls[GenerateConstructorUsingFieldsSelectionDialog.DOWN_INDEX].setEnabled(cp.canMoveDown(selectedList));
	}
	}

	private static final int DOWN_BUTTON= IDialogConstants.CLIENT_ID + 2;

	private static final int UP_BUTTON= IDialogConstants.CLIENT_ID + 1;

	protected Button[] fButtonControls;

	boolean[] fButtonsEnabled;

	IDialogSettings fGenConstructorSettings;

	int fHeight= 18;

	boolean fOmitSuper;

	Button fOmitSuperButton;

	IMethodBinding[] fSuperConstructors;

	int fSuperIndex;

	GenerateConstructorUsingFieldsTreeViewerAdapter fTreeViewerAdapter;

	int fWidth= 60;

	final String OMIT_SUPER= "OmitCallToSuper"; //$NON-NLS-1$

	final String SETTINGS_SECTION= "GenerateConstructorUsingFieldsSelectionDialog"; //$NON-NLS-1$

	private static final int DOWN_INDEX= 1;

	private static final int UP_INDEX= 0;

	public GenerateConstructorUsingFieldsSelectionDialog(Shell parent, ILabelProvider labelProvider, GenerateConstructorUsingFieldsContentProvider contentProvider, CompilationUnitEditor editor, IType type, IMethodBinding[] superConstructors) throws JavaModelException {
	super(parent, labelProvider, contentProvider, editor, type, true);
	fTreeViewerAdapter= new GenerateConstructorUsingFieldsTreeViewerAdapter();

	fSuperConstructors= superConstructors;

	IDialogSettings dialogSettings= JavaPlugin.getDefault().getDialogSettings();
	fGenConstructorSettings= dialogSettings.getSection(SETTINGS_SECTION);
	if (fGenConstructorSettings == null) {
	fGenConstructorSettings= dialogSettings.addNewSection(SETTINGS_SECTION);
	fGenConstructorSettings.put(OMIT_SUPER, false);
	}

	final boolean isEnum= type.isEnum();
	fOmitSuper= fGenConstructorSettings.getBoolean(OMIT_SUPER) \|\| isEnum;
	if (isEnum)
	setVisibility(Modifier.PRIVATE);
	}

	Composite addSuperClassConstructorChoices(Composite composite) {
	Label label= new Label(composite, SWT.NONE);
	label.setText(ActionMessages.GenerateConstructorUsingFieldsSelectionDialog_sort_constructor_choices_label);
	GridData gd= new GridData(GridData.FILL_HORIZONTAL);
	label.setLayoutData(gd);

	BindingLabelProvider provider= new BindingLabelProvider();
	final Combo combo= new Combo(composite, SWT.READ_ONLY);
	SWTUtil.setDefaultVisibleItemCount(combo);
	for (int i= 0; i < fSuperConstructors.length; i++) {
	combo.add(provider.getText(fSuperConstructors[i]));
	}

	// TODO: Can we be a little more intelligent about guessing the super() ?
	combo.setText(combo.getItem(0));
	combo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	combo.addSelectionListener(new SelectionAdapter() {

	@Override
	public void widgetSelected(SelectionEvent e) {
	fSuperIndex= combo.getSelectionIndex();
	// Disable omit super checkbox unless default constructor
	fOmitSuperButton.setEnabled(getSuperConstructorChoice().getParameterTypes().length == 0);
	updateOKStatus();
	}
	});

	return composite;
	}

	@Override
	protected void createButtonsForButtonBar(Composite parent) {
	createButton(parent, IDialogConstants.OK_ID, ActionMessages.GenerateConstructorUsingFieldsSelectionDialog_button_generate, true);
	createButton(parent, IDialogConstants.CANCEL_ID, IDialogConstants.CANCEL_LABEL, false);
	}

	@Override
	protected void buttonPressed(int buttonId) {
	super.buttonPressed(buttonId);
	switch (buttonId) {
	case UP_BUTTON: {
	GenerateConstructorUsingFieldsContentProvider contentProvider= (GenerateConstructorUsingFieldsContentProvider) getTreeViewer().getContentProvider();
	contentProvider.up(getElementList(), getTreeViewer());
	updateOKStatus();
	break;
	}
	case DOWN_BUTTON: {
	GenerateConstructorUsingFieldsContentProvider contentProvider= (GenerateConstructorUsingFieldsContentProvider) getTreeViewer().getContentProvider();
	contentProvider.down(getElementList(), getTreeViewer());
	updateOKStatus();
	break;
	}
	}
	}

	@Override
	protected void configureShell(Shell shell) {
	super.configureShell(shell);
	PlatformUI.getWorkbench().getHelpSystem().setHelp(shell, IJavaHelpContextIds.GENERATE_CONSTRUCTOR_USING_FIELDS_SELECTION_DIALOG);
	}

	@Override
	protected Control createDialogArea(Composite parent) {
	initializeDialogUnits(parent);

	Composite composite= new Composite(parent, SWT.NONE);
	GridLayout layout= new GridLayout();
	GridData gd= null;

	layout.marginHeight= convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
	layout.marginWidth= convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
	layout.verticalSpacing= convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
	layout.horizontalSpacing= convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
	composite.setLayout(layout);

	Composite classConstructorComposite= addSuperClassConstructorChoices(composite);
	gd= new GridData(GridData.FILL_BOTH);
	classConstructorComposite.setLayoutData(gd);

	Composite inner= new Composite(composite, SWT.NONE);
	GridLayout innerLayout= new GridLayout();
	innerLayout.numColumns= 2;
	innerLayout.marginHeight= 0;
	innerLayout.marginWidth= 0;
	inner.setLayout(innerLayout);

	Label messageLabel= createMessageArea(inner);
	if (messageLabel != null) {
	gd= new GridData(GridData.HORIZONTAL_ALIGN_FILL);
	gd.horizontalSpan= 2;
	messageLabel.setLayoutData(gd);
	}

	CheckboxTreeViewer treeViewer= createTreeViewer(inner);
	gd= new GridData(GridData.FILL_BOTH);
	gd.widthHint= convertWidthInCharsToPixels(fWidth);
	gd.heightHint= convertHeightInCharsToPixels(fHeight);
	treeViewer.getControl().setLayoutData(gd);
	treeViewer.addSelectionChangedListener(fTreeViewerAdapter);

	Composite buttonComposite= createSelectionButtons(inner);
	gd= new GridData(GridData.HORIZONTAL_ALIGN_FILL \| GridData.VERTICAL_ALIGN_FILL);
	buttonComposite.setLayoutData(gd);

	gd= new GridData(GridData.FILL_BOTH);
	inner.setLayoutData(gd);

	Composite entryComposite= createInsertPositionCombo(composite);
	entryComposite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	Composite commentComposite= createCommentSelection(composite);
	commentComposite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	Composite overrideSuperComposite= createOmitSuper(composite);
	overrideSuperComposite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	Control linkControl= createLinkControl(composite);
	if (linkControl != null)
	linkControl.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	gd= new GridData(GridData.FILL_BOTH);
	composite.setLayoutData(gd);

	applyDialogFont(composite);

	return composite;
	}

	@Override
	protected Composite createInsertPositionCombo(Composite composite) {
	Composite entryComposite= super.createInsertPositionCombo(composite);
	addVisibilityAndModifiersChoices(entryComposite);
	return entryComposite;
	}

	/*
	* @see org.eclipse.jdt.internal.ui.dialogs.SourceActionDialog#createLinkControl(org.eclipse.swt.widgets.Composite)
	*/
	@Override
	protected Control createLinkControl(Composite composite) {
	Link link= new Link(composite, SWT.WRAP);
	link.setText(ActionMessages.GenerateConstructorUsingFieldsSelectionDialog_template_link_message);
	link.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	openCodeTempatePage(CodeTemplateContextType.CONSTRUCTORCOMMENT_ID);
	}
	});
	link.setToolTipText(ActionMessages.GenerateConstructorUsingFieldsSelectionDialog_template_link_tooltip);

	GridData gridData= new GridData(SWT.FILL, SWT.BEGINNING, true, false);
	gridData.widthHint= convertWidthInCharsToPixels(40); // only expand further if anyone else requires it
	link.setLayoutData(gridData);
	return link;
	}

	protected Composite createOmitSuper(Composite composite) {
	Composite omitSuperComposite= new Composite(composite, SWT.NONE);
	GridLayout layout= new GridLayout();
	layout.marginHeight= 0;
	layout.marginWidth= 0;
	omitSuperComposite.setLayout(layout);

	fOmitSuperButton= new Button(omitSuperComposite, SWT.CHECK);
	fOmitSuperButton.setText(ActionMessages.GenerateConstructorUsingFieldsSelectionDialog_omit_super);
	fOmitSuperButton.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));

	fOmitSuperButton.addSelectionListener(new SelectionListener() {

	@Override
	public void widgetDefaultSelected(SelectionEvent e) {
	widgetSelected(e);
	}

	@Override
	public void widgetSelected(SelectionEvent e) {
	boolean isSelected= (((Button) e.widget).getSelection());
	setOmitSuper(isSelected);
	}
	});
	fOmitSuperButton.setSelection(isOmitSuper());
	try {
	// Disable omit super checkbox unless default constructor and enum
	final boolean hasContructor= getSuperConstructorChoice().getParameterTypes().length == 0;
	fOmitSuperButton.setEnabled(hasContructor && !getType().isEnum());
	} catch (JavaModelException exception) {
	JavaPlugin.log(exception);
	}
	GridData gd= new GridData(GridData.HORIZONTAL_ALIGN_FILL);
	gd.horizontalSpan= 2;
	fOmitSuperButton.setLayoutData(gd);

	return omitSuperComposite;
	}

	@Override
	protected Composite createSelectionButtons(Composite composite) {
	Composite buttonComposite= super.createSelectionButtons(composite);

	GridLayout layout= new GridLayout();
	buttonComposite.setLayout(layout);

	createUpDownButtons(buttonComposite);

	layout.marginHeight= 0;
	layout.marginWidth= 0;
	layout.numColumns= 1;

	return buttonComposite;
	}

	void createUpDownButtons(Composite buttonComposite) {
	int numButtons= 2; // up, down
	fButtonControls= new Button[numButtons];
	fButtonsEnabled= new boolean[numButtons];
	fButtonControls[GenerateConstructorUsingFieldsSelectionDialog.UP_INDEX]= createButton(buttonComposite, UP_BUTTON, ActionMessages.GenerateConstructorUsingFieldsSelectionDialog_up_button,false);
	fButtonControls[GenerateConstructorUsingFieldsSelectionDialog.DOWN_INDEX]= createButton(buttonComposite, DOWN_BUTTON, ActionMessages.GenerateConstructorUsingFieldsSelectionDialog_down_button,false);
	boolean defaultState= false;
	fButtonControls[GenerateConstructorUsingFieldsSelectionDialog.UP_INDEX].setEnabled(defaultState);
	fButtonControls[GenerateConstructorUsingFieldsSelectionDialog.DOWN_INDEX].setEnabled(defaultState);
	fButtonsEnabled[GenerateConstructorUsingFieldsSelectionDialog.UP_INDEX]= defaultState;
	fButtonsEnabled[GenerateConstructorUsingFieldsSelectionDialog.DOWN_INDEX]= defaultState;
	}

	@Override
	protected Composite createVisibilityControlAndModifiers(Composite parent, final IVisibilityChangeListener visibilityChangeListener, int[] availableVisibilities, int correctVisibility) {
	int[] visibilities= availableVisibilities;
	try {
	if (getType().isEnum())
	visibilities= new int[] { };
	} catch (JavaModelException exception) {
	JavaPlugin.log(exception);
	}
	return createVisibilityControl(parent, visibilityChangeListener, visibilities, correctVisibility);
	}

	List<?> getElementList() {
	IStructuredSelection selection= (IStructuredSelection) getTreeViewer().getSelection();
	List<?> elements= selection.toList();
	ArrayList<Object> elementList= new ArrayList<>();

	for (int i= 0; i < elements.size(); i++) {
	elementList.add(elements.get(i));
	}
	return elementList;
	}

	public IMethodBinding getSuperConstructorChoice() {
	return fSuperConstructors[fSuperIndex];
	}

	public boolean isOmitSuper() {
	return fOmitSuper;
	}

	public void setOmitSuper(boolean omitSuper) {
	if (fOmitSuper != omitSuper) {
	fOmitSuper= omitSuper;
	fGenConstructorSettings.put(OMIT_SUPER, omitSuper);
	}
	}
	}