r/org.eclipse.statet.r.ui/src/org/eclipse/statet/internal/r/ui/dataeditor/FindDataDialog.java - statet/org.eclipse.statet-r - Git at Google

 /*=============================================================================#
  # Copyright (c) 2010, 2021 Stephan Wahlbrink and others.
  #
  # This program and the accompanying materials are made available under the
  # terms of the Eclipse Public License 2.0 which is available at
  # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
  # which is available at https://www.apache.org/licenses/LICENSE-2.0.
  #
  # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
  #
  # Contributors:
  #     Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation
  #=============================================================================*/

 package org.eclipse.statet.internal.r.ui.dataeditor;

 import java.util.HashMap;
 import java.util.Map;

 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.layout.GridData;
 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.Event;
 import org.eclipse.swt.widgets.Group;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Listener;
 import org.eclipse.ui.IPartListener;
 import org.eclipse.ui.IWindowListener;
 import org.eclipse.ui.IWorkbenchPage;
 import org.eclipse.ui.IWorkbenchPart;
 import org.eclipse.ui.IWorkbenchWindow;

 import org.eclipse.statet.ecommons.ui.dialogs.DialogUtils;
 import org.eclipse.statet.ecommons.ui.dialogs.ExtStatusDialog;
 import org.eclipse.statet.ecommons.ui.util.LayoutUtils;

 import org.eclipse.statet.internal.r.ui.RUIPlugin;
 import org.eclipse.statet.r.ui.dataeditor.RDataTableComposite;


 public class FindDataDialog extends ExtStatusDialog {


 	private static final Map<IWorkbenchWindow, FindDataDialog> gDialogs= new HashMap<>();


 	public static FindDataDialog get(final IWorkbenchWindow window, final boolean create) {
 		FindDataDialog dialog= gDialogs.get(window);
 		if (dialog == null && create) {
 			dialog= new FindDataDialog(window);
 			dialog.create();
 			gDialogs.put(window, dialog);
 		}
 		return dialog;
 	}


 	private static final int FIND_NEXT_ID= 101;
 	private static final int FIND_PREVIOUS_ID= 102;


 	private class PartListener implements IWindowListener, IPartListener {

 		@Override
 		public void windowOpened(final IWorkbenchWindow window) {
 		}
 		@Override
 		public void windowClosed(final IWorkbenchWindow window) {
 			if (FindDataDialog.this.fWindow == window) {
 				close();
 			}
 		}
 		@Override
 		public void windowActivated(final IWorkbenchWindow window) {
 		}
 		@Override
 		public void windowDeactivated(final IWorkbenchWindow window) {
 		}

 		@Override
 		public void partOpened(final IWorkbenchPart part) {
 		}
 		@Override
 		public void partClosed(final IWorkbenchPart part) {
 			if (FindDataDialog.this.fPart == part) {
 				FindDataDialog.this.fPart= null;
 			}
 		}
 		@Override
 		public void partActivated(final IWorkbenchPart part) {
 			FindDataDialog.this.fPart= part;
 			update(part);
 		}
 		@Override
 		public void partDeactivated(final IWorkbenchPart part) {
 		}
 		@Override
 		public void partBroughtToTop(final IWorkbenchPart part) {
 		}

 	}


 	private final IWorkbenchWindow fWindow;
 	private IWorkbenchPart fPart;

 	private final PartListener fPartListener= new PartListener();

 	private RDataTableComposite fTable;

 	private Combo fTextControl;
 	private Button fRExpressionModeControl;
 	private Button fIsNaModeControl;
 	private Button fDirectionFirstInColumnControl;
 	private Button fDirectionFirstInRowControl;
 	private Button fSelectedOnlyControl;

 	private final Map<String, String> fHistoryModeMap= new HashMap<>();


 	private final IFindListener fFindListener= new IFindListener() {
 		@Override
 		public void handleFindEvent(final IFindListener.FindEvent event) {
 			updateStatus(event.status);
 		}
 	};


 	protected FindDataDialog(final IWorkbenchWindow window) {
 		super(window.getShell());

 		this.fWindow= window;
 		this.fWindow.getWorkbench().addWindowListener(this.fPartListener);
 		this.fWindow.getActivePage().addPartListener(this.fPartListener);
 		this.fPart= this.fWindow.getActivePage().getActivePart();

 		setTitle("Find");
 		setShellStyle((getShellStyle() & ~SWT.APPLICATION_MODAL) | SWT.MODELESS);
 		setBlockOnOpen(false);
 		setStatusLineAboveButtons(false);
 		setHelpAvailable(false);
 	}


 	protected IDialogSettings getDialogSettings() {
 		return DialogUtils.getDialogSettings(RUIPlugin.getInstance(), "RDataTable.FindDialog");
 	}

 	@Override
 	protected IDialogSettings getDialogBoundsSettings() {
 		return getDialogSettings();
 	}

 	@Override
 	public void create() {
 		super.create();

 		loadSettings();
 	}

 	@Override
 	public boolean close() {
 		this.fWindow.getWorkbench().removeWindowListener(this.fPartListener);
 		final IWorkbenchPage page= this.fWindow.getActivePage();
 		if (page != null) {
 			page.removePartListener(this.fPartListener);
 		}

 		gDialogs.remove(this.fWindow);
 		saveSettings();

 		return super.close();
 	}

 	@Override
 	protected Control createDialogArea(final Composite parent) {
 		final Composite composite= new Composite(parent, SWT.NONE);
 		composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
 		composite.setLayout(LayoutUtils.newDialogGrid(2));

 		final Composite textInput= createTextInput(composite);
 		textInput.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 2, 1));

 		final Composite additionalOptions= createAdditionalOptions(composite);
 		additionalOptions.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 2, 1));

 		final Composite directionOptions= createDirectionOptions(composite);
 		directionOptions.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 2, 1));

 //		final Composite scopeOptions= createScopeOptions(composite);
 //		scopeOptions.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
 //
 		LayoutUtils.addSmallFiller(composite, false);
 		final Composite navigateButtons= createNavigateButtons(composite);
 		navigateButtons.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 2, 1));

 		applyDialogFont(composite);
 		return composite;
 	}

 	protected Composite createTextInput(final Composite parent) {
 		final Composite composite= new Composite(parent, SWT.NONE);
 		composite.setLayout(LayoutUtils.newCompositeGrid(2));

 		final Label label= new Label(composite, SWT.NONE);
 		label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false));
 		label.setText("Find:");

 		this.fTextControl= new Combo(composite, SWT.DROP_DOWN | SWT.BORDER);
 		this.fTextControl.setLayoutData(LayoutUtils.hintWidth(
 				new GridData(SWT.FILL, SWT.CENTER, true, false), this.fTextControl, 25 ));

 		this.fTextControl.addListener(SWT.Modify, new Listener() {
 			@Override
 			public void handleEvent(final Event event) {
 				updateStatus(null);
 				updateState();
 			}
 		});
 		this.fTextControl.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(final SelectionEvent e) {
 				final int selectionIdx;
 				if (!FindDataDialog.this.fTextControl.getListVisible()
 						&& (selectionIdx= FindDataDialog.this.fTextControl.getSelectionIndex()) >= 0) {
 					loadQuery(FindDataDialog.this.fTextControl.getItem(selectionIdx));
 				}
 			}
 		});

 		return composite;
 	}

 	protected Composite createDirectionOptions(final Composite parent) {
 		final Group composite= new Group(parent, SWT.NONE);
 		composite.setText("Direction");
 		composite.setLayout(LayoutUtils.newGroupGrid(2, true));

 		{	this.fDirectionFirstInColumnControl= new Button(composite, SWT.RADIO);
 			this.fDirectionFirstInColumnControl.setText("&Column, Row");
 			this.fDirectionFirstInColumnControl.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
 			this.fDirectionFirstInColumnControl.setSelection(true);
 		}
 		{	this.fDirectionFirstInRowControl= new Button(composite, SWT.RADIO);
 			this.fDirectionFirstInRowControl.setText("&Row, Column");
 			this.fDirectionFirstInRowControl.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
 		}
 		{	this.fSelectedOnlyControl= new Button(composite, SWT.CHECK);
 			this.fSelectedOnlyControl.setText("Only Selec&ted Cells");
 			this.fSelectedOnlyControl.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 2, 1));
 		}

 		return composite;
 	}

 	protected Composite createScopeOptions(final Composite parent) {
 		final Group composite= new Group(parent, SWT.NONE);
 		composite.setText("Scope");
 		composite.setLayout(LayoutUtils.newGroupGrid(1));

 		{	final Button button= new Button(composite, SWT.RADIO);
 			button.setText("A&ll");
 			button.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
 			button.setSelection(true);
 		}
 		{	this.fSelectedOnlyControl= new Button(composite, SWT.CHECK);
 			this.fSelectedOnlyControl.setText("Selec&ted Cells");
 			this.fSelectedOnlyControl.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
 		}
 		return composite;
 	}

 	protected Composite createAdditionalOptions(final Composite parent) {
 		final Group composite= new Group(parent, SWT.NONE);
 		composite.setText("Options");
 		composite.setLayout(LayoutUtils.newGroupGrid(2, true));

 		{	this.fRExpressionModeControl= new Button(composite, SWT.CHECK);
 			this.fRExpressionModeControl.setText("R expression");
 			this.fRExpressionModeControl.setToolTipText("Use x to reference the object itself, e.g. 'x >= 1'");
 			this.fRExpressionModeControl.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
 			this.fRExpressionModeControl.addSelectionListener(new SelectionAdapter() {
 				@Override
 				public void widgetSelected(final SelectionEvent e) {
 					if (FindDataDialog.this.fRExpressionModeControl.getSelection()) {
 						FindDataDialog.this.fIsNaModeControl.setSelection(false);
 					}
 				}
 			});
 		}

 		{	this.fIsNaModeControl= new Button(composite, SWT.CHECK);
 			this.fIsNaModeControl.setText("Is NA");
 			this.fIsNaModeControl.setToolTipText("The search expression is ignored");
 			this.fIsNaModeControl.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
 			this.fIsNaModeControl.addSelectionListener(new SelectionAdapter() {
 				@Override
 				public void widgetSelected(final SelectionEvent e) {
 					if (FindDataDialog.this.fIsNaModeControl.getSelection()) {
 						FindDataDialog.this.fRExpressionModeControl.setSelection(false);
 					}
 				}
 			});
 		}

 		return composite;
 	}

 	protected Composite createNavigateButtons(final Composite parent) {
 		final Composite composite= new Composite(parent, SWT.NONE);
 		composite.setLayout(LayoutUtils.newCompositeGrid(0));

 		createButton(composite, FIND_PREVIOUS_ID, "&Previous", false);
 		createButton(composite, FIND_NEXT_ID, "&Next", true);

 		return composite;
 	}

 	@Override
 	protected void createButtonsForButtonBar(final Composite parent) {
 		createButton(parent, IDialogConstants.CLOSE_ID, IDialogConstants.CLOSE_LABEL, false);
 	}

 	@Override
 	protected void buttonPressed(final int buttonId) {
 		switch (buttonId) {
 		case IDialogConstants.CLOSE_ID:
 			close();
 			return;
 		case FIND_NEXT_ID:
 			doFind(true);
 			return;
 		case FIND_PREVIOUS_ID:
 			doFind(false);
 			return;
 		}
 	}

 	private void loadQuery(final String text) {
 		if (text == null || text.isEmpty()) {
 			return;
 		}

 		final String mode= this.fHistoryModeMap.get(text);
 		if (mode != null) {
 			if ("r_expression".equals(mode)) {
 				this.fRExpressionModeControl.setSelection(true);
 				this.fIsNaModeControl.setSelection(false);
 			}
 			else {
 				this.fRExpressionModeControl.setSelection(false);
 			}
 		}
 	}

 	private void doFind(final boolean forward) {
 		final String expression= getExpression();
 		if (!expression.equals("is.na(x)")) {
 			final String text= this.fTextControl.getText();
 			final int idx= this.fTextControl.indexOf(text);
 			if (idx != 0) {
 				if (idx > 0) {
 					this.fTextControl.remove(idx);
 				}
 				this.fTextControl.add(text, 0);
 				this.fTextControl.setText(text);
 			}
 			this.fHistoryModeMap.put(text,
 					this.fRExpressionModeControl.getSelection() ? "r_expression" : "default");
 		}
 		this.fTable.find(expression,
 				this.fSelectedOnlyControl.getSelection(),
 				this.fDirectionFirstInRowControl.getSelection(),
 				forward);
 	}

 	protected String getExpression() {
 		if (this.fRExpressionModeControl.getSelection()) {
 			return this.fTextControl.getText();
 		}
 		else if (this.fIsNaModeControl.getSelection()) {
 			return "is.na(x)";
 		}
 		else {
 			return "x == " + this.fTextControl.getText();
 		}
 	}

 	protected void loadSettings() {
 		final IDialogSettings settings= getDialogSettings();
 		final String[] history= DialogUtils.noNull(settings.getArray("SearchText.history"));
 		this.fTextControl.setItems(history);
 		final String[] historyModes= DialogUtils.noNull(settings.getArray("SearchMode.history"));
 		if (history.length == historyModes.length) {
 			for (int i= 0; i < history.length; i++) {
 				this.fHistoryModeMap.put(history[i], historyModes[i]);
 			}
 		}
 		if (history.length > 0) {
 			this.fTextControl.setText(history[0]);
 			loadQuery(history[0]);
 		}
 		if (settings.getBoolean("Direction.firstInRow")) {
 			this.fDirectionFirstInColumnControl.setSelection(false);
 			this.fDirectionFirstInRowControl.setSelection(true);
 		}
 		else {
 			this.fDirectionFirstInColumnControl.setSelection(true);
 			this.fDirectionFirstInRowControl.setSelection(false);
 		}
 	}

 	protected void saveSettings() {
 		final IDialogSettings settings= getDialogSettings();
 		final String[] history= DialogUtils.combineHistoryItems(this.fTextControl.getItems(), null);
 		settings.put("SearchText.history", history);
 		final String[] historyModes= new String[history.length];
 		for (int i= 0; i < history.length; i++) {
 			String mode= this.fHistoryModeMap.get(history[i]);
 			if (mode == null) {
 				mode= "default";
 			}
 			historyModes[i]= mode;
 		}
 		settings.put("SearchMode.history", historyModes);
 		settings.put("Direction.firstInRow", this.fDirectionFirstInRowControl.getSelection());
 	}


 	public void update(final IWorkbenchPart part) {
 		if (part != null && this.fPart == part) {
 			final RDataTableComposite table= part.getAdapter(RDataTableComposite.class);
 			if (this.fTable != null && this.fTable != table) {
 				this.fTable.removeFindListener(this.fFindListener);
 				updateStatus(null);
 			}

 			this.fTable= table;
 			if (this.fTable != null) {
 				table.addFindListener(this.fFindListener);
 			}
 			updateState();
 		}
 	}

 	private void updateState() {
 		final boolean enabled= (this.fTable != null && this.fTextControl.getText().length() > 0);
 		getButton(FIND_NEXT_ID).setEnabled(enabled);
 		getButton(FIND_PREVIOUS_ID).setEnabled(enabled);
 	}

 }
	/*=============================================================================#
	# Copyright (c) 2010, 2021 Stephan Wahlbrink and others.
	#
	# This program and the accompanying materials are made available under the
	# terms of the Eclipse Public License 2.0 which is available at
	# https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
	# which is available at https://www.apache.org/licenses/LICENSE-2.0.
	#
	# SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
	#
	# Contributors:
	# Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation
	#=============================================================================*/

	package org.eclipse.statet.internal.r.ui.dataeditor;

	import java.util.HashMap;
	import java.util.Map;

	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.dialogs.IDialogSettings;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.layout.GridData;
	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.Event;
	import org.eclipse.swt.widgets.Group;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Listener;
	import org.eclipse.ui.IPartListener;
	import org.eclipse.ui.IWindowListener;
	import org.eclipse.ui.IWorkbenchPage;
	import org.eclipse.ui.IWorkbenchPart;
	import org.eclipse.ui.IWorkbenchWindow;

	import org.eclipse.statet.ecommons.ui.dialogs.DialogUtils;
	import org.eclipse.statet.ecommons.ui.dialogs.ExtStatusDialog;
	import org.eclipse.statet.ecommons.ui.util.LayoutUtils;

	import org.eclipse.statet.internal.r.ui.RUIPlugin;
	import org.eclipse.statet.r.ui.dataeditor.RDataTableComposite;


	public class FindDataDialog extends ExtStatusDialog {


	private static final Map<IWorkbenchWindow, FindDataDialog> gDialogs= new HashMap<>();


	public static FindDataDialog get(final IWorkbenchWindow window, final boolean create) {
	FindDataDialog dialog= gDialogs.get(window);
	if (dialog == null && create) {
	dialog= new FindDataDialog(window);
	dialog.create();
	gDialogs.put(window, dialog);
	}
	return dialog;
	}


	private static final int FIND_NEXT_ID= 101;
	private static final int FIND_PREVIOUS_ID= 102;


	private class PartListener implements IWindowListener, IPartListener {

	@Override
	public void windowOpened(final IWorkbenchWindow window) {
	}
	@Override
	public void windowClosed(final IWorkbenchWindow window) {
	if (FindDataDialog.this.fWindow == window) {
	close();
	}
	}
	@Override
	public void windowActivated(final IWorkbenchWindow window) {
	}
	@Override
	public void windowDeactivated(final IWorkbenchWindow window) {
	}

	@Override
	public void partOpened(final IWorkbenchPart part) {
	}
	@Override
	public void partClosed(final IWorkbenchPart part) {
	if (FindDataDialog.this.fPart == part) {
	FindDataDialog.this.fPart= null;
	}
	}
	@Override
	public void partActivated(final IWorkbenchPart part) {
	FindDataDialog.this.fPart= part;
	update(part);
	}
	@Override
	public void partDeactivated(final IWorkbenchPart part) {
	}
	@Override
	public void partBroughtToTop(final IWorkbenchPart part) {
	}

	}


	private final IWorkbenchWindow fWindow;
	private IWorkbenchPart fPart;

	private final PartListener fPartListener= new PartListener();

	private RDataTableComposite fTable;

	private Combo fTextControl;
	private Button fRExpressionModeControl;
	private Button fIsNaModeControl;
	private Button fDirectionFirstInColumnControl;
	private Button fDirectionFirstInRowControl;
	private Button fSelectedOnlyControl;

	private final Map<String, String> fHistoryModeMap= new HashMap<>();


	private final IFindListener fFindListener= new IFindListener() {
	@Override
	public void handleFindEvent(final IFindListener.FindEvent event) {
	updateStatus(event.status);
	}
	};


	protected FindDataDialog(final IWorkbenchWindow window) {
	super(window.getShell());

	this.fWindow= window;
	this.fWindow.getWorkbench().addWindowListener(this.fPartListener);
	this.fWindow.getActivePage().addPartListener(this.fPartListener);
	this.fPart= this.fWindow.getActivePage().getActivePart();

	setTitle("Find");
	setShellStyle((getShellStyle() & ~SWT.APPLICATION_MODAL) \| SWT.MODELESS);
	setBlockOnOpen(false);
	setStatusLineAboveButtons(false);
	setHelpAvailable(false);
	}


	protected IDialogSettings getDialogSettings() {
	return DialogUtils.getDialogSettings(RUIPlugin.getInstance(), "RDataTable.FindDialog");
	}

	@Override
	protected IDialogSettings getDialogBoundsSettings() {
	return getDialogSettings();
	}

	@Override
	public void create() {
	super.create();

	loadSettings();
	}

	@Override
	public boolean close() {
	this.fWindow.getWorkbench().removeWindowListener(this.fPartListener);
	final IWorkbenchPage page= this.fWindow.getActivePage();
	if (page != null) {
	page.removePartListener(this.fPartListener);
	}

	gDialogs.remove(this.fWindow);
	saveSettings();

	return super.close();
	}

	@Override
	protected Control createDialogArea(final Composite parent) {
	final Composite composite= new Composite(parent, SWT.NONE);
	composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
	composite.setLayout(LayoutUtils.newDialogGrid(2));

	final Composite textInput= createTextInput(composite);
	textInput.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 2, 1));

	final Composite additionalOptions= createAdditionalOptions(composite);
	additionalOptions.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 2, 1));

	final Composite directionOptions= createDirectionOptions(composite);
	directionOptions.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 2, 1));

	// final Composite scopeOptions= createScopeOptions(composite);
	// scopeOptions.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
	//
	LayoutUtils.addSmallFiller(composite, false);
	final Composite navigateButtons= createNavigateButtons(composite);
	navigateButtons.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 2, 1));

	applyDialogFont(composite);
	return composite;
	}

	protected Composite createTextInput(final Composite parent) {
	final Composite composite= new Composite(parent, SWT.NONE);
	composite.setLayout(LayoutUtils.newCompositeGrid(2));

	final Label label= new Label(composite, SWT.NONE);
	label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false));
	label.setText("Find:");

	this.fTextControl= new Combo(composite, SWT.DROP_DOWN \| SWT.BORDER);
	this.fTextControl.setLayoutData(LayoutUtils.hintWidth(
	new GridData(SWT.FILL, SWT.CENTER, true, false), this.fTextControl, 25 ));

	this.fTextControl.addListener(SWT.Modify, new Listener() {
	@Override
	public void handleEvent(final Event event) {
	updateStatus(null);
	updateState();
	}
	});
	this.fTextControl.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(final SelectionEvent e) {
	final int selectionIdx;
	if (!FindDataDialog.this.fTextControl.getListVisible()
	&& (selectionIdx= FindDataDialog.this.fTextControl.getSelectionIndex()) >= 0) {
	loadQuery(FindDataDialog.this.fTextControl.getItem(selectionIdx));
	}
	}
	});

	return composite;
	}

	protected Composite createDirectionOptions(final Composite parent) {
	final Group composite= new Group(parent, SWT.NONE);
	composite.setText("Direction");
	composite.setLayout(LayoutUtils.newGroupGrid(2, true));

	{ this.fDirectionFirstInColumnControl= new Button(composite, SWT.RADIO);
	this.fDirectionFirstInColumnControl.setText("&Column, Row");
	this.fDirectionFirstInColumnControl.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
	this.fDirectionFirstInColumnControl.setSelection(true);
	}
	{ this.fDirectionFirstInRowControl= new Button(composite, SWT.RADIO);
	this.fDirectionFirstInRowControl.setText("&Row, Column");
	this.fDirectionFirstInRowControl.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
	}
	{ this.fSelectedOnlyControl= new Button(composite, SWT.CHECK);
	this.fSelectedOnlyControl.setText("Only Selec&ted Cells");
	this.fSelectedOnlyControl.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 2, 1));
	}

	return composite;
	}

	protected Composite createScopeOptions(final Composite parent) {
	final Group composite= new Group(parent, SWT.NONE);
	composite.setText("Scope");
	composite.setLayout(LayoutUtils.newGroupGrid(1));

	{ final Button button= new Button(composite, SWT.RADIO);
	button.setText("A&ll");
	button.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
	button.setSelection(true);
	}
	{ this.fSelectedOnlyControl= new Button(composite, SWT.CHECK);
	this.fSelectedOnlyControl.setText("Selec&ted Cells");
	this.fSelectedOnlyControl.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
	}
	return composite;
	}

	protected Composite createAdditionalOptions(final Composite parent) {
	final Group composite= new Group(parent, SWT.NONE);
	composite.setText("Options");
	composite.setLayout(LayoutUtils.newGroupGrid(2, true));

	{ this.fRExpressionModeControl= new Button(composite, SWT.CHECK);
	this.fRExpressionModeControl.setText("R expression");
	this.fRExpressionModeControl.setToolTipText("Use x to reference the object itself, e.g. 'x >= 1'");
	this.fRExpressionModeControl.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
	this.fRExpressionModeControl.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(final SelectionEvent e) {
	if (FindDataDialog.this.fRExpressionModeControl.getSelection()) {
	FindDataDialog.this.fIsNaModeControl.setSelection(false);
	}
	}
	});
	}

	{ this.fIsNaModeControl= new Button(composite, SWT.CHECK);
	this.fIsNaModeControl.setText("Is NA");
	this.fIsNaModeControl.setToolTipText("The search expression is ignored");
	this.fIsNaModeControl.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
	this.fIsNaModeControl.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(final SelectionEvent e) {
	if (FindDataDialog.this.fIsNaModeControl.getSelection()) {
	FindDataDialog.this.fRExpressionModeControl.setSelection(false);
	}
	}
	});
	}

	return composite;
	}

	protected Composite createNavigateButtons(final Composite parent) {
	final Composite composite= new Composite(parent, SWT.NONE);
	composite.setLayout(LayoutUtils.newCompositeGrid(0));

	createButton(composite, FIND_PREVIOUS_ID, "&Previous", false);
	createButton(composite, FIND_NEXT_ID, "&Next", true);

	return composite;
	}

	@Override
	protected void createButtonsForButtonBar(final Composite parent) {
	createButton(parent, IDialogConstants.CLOSE_ID, IDialogConstants.CLOSE_LABEL, false);
	}

	@Override
	protected void buttonPressed(final int buttonId) {
	switch (buttonId) {
	case IDialogConstants.CLOSE_ID:
	close();
	return;
	case FIND_NEXT_ID:
	doFind(true);
	return;
	case FIND_PREVIOUS_ID:
	doFind(false);
	return;
	}
	}

	private void loadQuery(final String text) {
	if (text == null \|\| text.isEmpty()) {
	return;
	}

	final String mode= this.fHistoryModeMap.get(text);
	if (mode != null) {
	if ("r_expression".equals(mode)) {
	this.fRExpressionModeControl.setSelection(true);
	this.fIsNaModeControl.setSelection(false);
	}
	else {
	this.fRExpressionModeControl.setSelection(false);
	}
	}
	}

	private void doFind(final boolean forward) {
	final String expression= getExpression();
	if (!expression.equals("is.na(x)")) {
	final String text= this.fTextControl.getText();
	final int idx= this.fTextControl.indexOf(text);
	if (idx != 0) {
	if (idx > 0) {
	this.fTextControl.remove(idx);
	}
	this.fTextControl.add(text, 0);
	this.fTextControl.setText(text);
	}
	this.fHistoryModeMap.put(text,
	this.fRExpressionModeControl.getSelection() ? "r_expression" : "default");
	}
	this.fTable.find(expression,
	this.fSelectedOnlyControl.getSelection(),
	this.fDirectionFirstInRowControl.getSelection(),
	forward);
	}

	protected String getExpression() {
	if (this.fRExpressionModeControl.getSelection()) {
	return this.fTextControl.getText();
	}
	else if (this.fIsNaModeControl.getSelection()) {
	return "is.na(x)";
	}
	else {
	return "x == " + this.fTextControl.getText();
	}
	}

	protected void loadSettings() {
	final IDialogSettings settings= getDialogSettings();
	final String[] history= DialogUtils.noNull(settings.getArray("SearchText.history"));
	this.fTextControl.setItems(history);
	final String[] historyModes= DialogUtils.noNull(settings.getArray("SearchMode.history"));
	if (history.length == historyModes.length) {
	for (int i= 0; i < history.length; i++) {
	this.fHistoryModeMap.put(history[i], historyModes[i]);
	}
	}
	if (history.length > 0) {
	this.fTextControl.setText(history[0]);
	loadQuery(history[0]);
	}
	if (settings.getBoolean("Direction.firstInRow")) {
	this.fDirectionFirstInColumnControl.setSelection(false);
	this.fDirectionFirstInRowControl.setSelection(true);
	}
	else {
	this.fDirectionFirstInColumnControl.setSelection(true);
	this.fDirectionFirstInRowControl.setSelection(false);
	}
	}

	protected void saveSettings() {
	final IDialogSettings settings= getDialogSettings();
	final String[] history= DialogUtils.combineHistoryItems(this.fTextControl.getItems(), null);
	settings.put("SearchText.history", history);
	final String[] historyModes= new String[history.length];
	for (int i= 0; i < history.length; i++) {
	String mode= this.fHistoryModeMap.get(history[i]);
	if (mode == null) {
	mode= "default";
	}
	historyModes[i]= mode;
	}
	settings.put("SearchMode.history", historyModes);
	settings.put("Direction.firstInRow", this.fDirectionFirstInRowControl.getSelection());
	}


	public void update(final IWorkbenchPart part) {
	if (part != null && this.fPart == part) {
	final RDataTableComposite table= part.getAdapter(RDataTableComposite.class);
	if (this.fTable != null && this.fTable != table) {
	this.fTable.removeFindListener(this.fFindListener);
	updateStatus(null);
	}

	this.fTable= table;
	if (this.fTable != null) {
	table.addFindListener(this.fFindListener);
	}
	updateState();
	}
	}

	private void updateState() {
	final boolean enabled= (this.fTable != null && this.fTextControl.getText().length() > 0);
	getButton(FIND_NEXT_ID).setEnabled(enabled);
	getButton(FIND_PREVIOUS_ID).setEnabled(enabled);
	}

	}