core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/preferences/ScalabilityPreferencePage.java - cdt/org.eclipse.cdt - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2014 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
  *     Anton Leherbauer (Wind River Systems)
  *     Thomas Corbat (IFS)
  *******************************************************************************/
 package org.eclipse.cdt.internal.ui.preferences;

 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.Map;

 import org.eclipse.cdt.core.CCorePreferenceConstants;
 import org.eclipse.cdt.internal.ui.ICHelpContextIds;
 import org.eclipse.cdt.internal.ui.wizards.dialogfields.Separator;
 import org.eclipse.cdt.ui.CUIPlugin;
 import org.eclipse.cdt.ui.PreferenceConstants;
 import org.eclipse.cdt.utils.ui.controls.ControlFactory;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.preference.FieldEditor;
 import org.eclipse.jface.preference.IPreferenceStore;
 import org.eclipse.jface.preference.IntegerFieldEditor;
 import org.eclipse.jface.preference.PreferencePage;
 import org.eclipse.jface.preference.StringFieldEditor;
 import org.eclipse.jface.resource.JFaceResources;
 import org.eclipse.jface.util.IPropertyChangeListener;
 import org.eclipse.jface.util.PropertyChangeEvent;
 import org.eclipse.osgi.util.NLS;
 import org.eclipse.swt.SWT;
 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.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.IWorkbenchPreferencePage;
 import org.eclipse.ui.PlatformUI;

 public class ScalabilityPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {

 	// Files with this number of lines will trigger scalability mode
 	private IntegerFieldEditor fLinesToTrigger;

 	private Button fEnableAll;

 	private Button fReconciler;

 	private Button fSyntaxColor;

 	private Button fSemanticHighlighting;

 	private Button fContentAssist;

 	private Button fContentAssistAutoActivation;

 	private ScalabilityIntegerFieldEditor fMaximumTrivialExpressions;

 	private ScalabilityIntegerFieldEditor fMaximumTokens;

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

 	/**
 	 * List of master/slave listeners when there's a dependency.
 	 *
 	 * @see #createDependency(Button, String, Control)
 	 */
 	private final ArrayList<Object> fMasterSlaveListeners = new ArrayList<>();

 	public ScalabilityPreferencePage() {
 		setPreferenceStore(PreferenceConstants.getPreferenceStore());
 		setDescription(PreferencesMessages.ScalabilityPreferencePage_description);
 	}

 	/**
 	 * Creates a button with the given label and sets the default configuration data.
 	 */
 	private Button createCheckButton(Composite parent, String label, String key) {
 		Button button = new Button(parent, SWT.CHECK | SWT.LEFT);
 		button.setText(label);
 		// FieldEditor GridData
 		GridData data = new GridData();
 		button.setLayoutData(data);
 		fCheckBoxes.put(button, key);
 		return button;
 	}

 	private void initFields() {
 		IPreferenceStore prefs = getPreferenceStore();

 		Iterator<Object> iter = fCheckBoxes.keySet().iterator();
 		while (iter.hasNext()) {
 			Button b = (Button) iter.next();
 			String key = fCheckBoxes.get(b);
 			b.setSelection(prefs.getBoolean(key));
 		}

 		// Update slaves
 		iter = fMasterSlaveListeners.iterator();
 		while (iter.hasNext()) {
 			SelectionListener listener = (SelectionListener) iter.next();
 			listener.widgetSelected(null);
 		}
 		fLinesToTrigger.setStringValue(Integer.toString(prefs.getInt(PreferenceConstants.SCALABILITY_NUMBER_OF_LINES)));
 		fMaximumTrivialExpressions.load();
 		fMaximumTokens.load();
 	}

 	/*
 	 * @see PreferencePage#createControl(Composite)
 	 */
 	@Override
 	public void createControl(Composite parent) {
 		super.createControl(parent);
 		PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), ICHelpContextIds.SCALABILITY_PREFERENCE_PAGE);
 	}

 	/*
 	 * @see PreferencePage#createContents(Composite)
 	 */
 	@Override
 	protected Control createContents(Composite parent) {
 		initializeDialogUnits(parent);
 		int nColumns = 1;

 		Composite composite = new Composite(parent, SWT.NONE);
 		GridLayout layout = new GridLayout();
 		layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
 		layout.marginWidth = 0;
 		layout.numColumns = nColumns;
 		composite.setLayout(layout);

 		GridData data = new GridData();
 		data.verticalAlignment = GridData.FILL;
 		data.horizontalAlignment = GridData.FILL;
 		composite.setLayoutData(data);

 		createDetectionSettings(composite);

 		new Separator().doFillIntoGrid(composite, nColumns);

 		createScalabilityModeSettings(composite);

 		new Separator().doFillIntoGrid(composite, nColumns);

 		createParserSettings(composite);

 		new Separator().doFillIntoGrid(composite, nColumns);

 		String noteTitle = PreferencesMessages.ScalabilityPreferencePage_note;
 		String noteMessage = PreferencesMessages.ScalabilityPreferencePage_preferenceOnlyForNewEditors;
 		Composite noteControl = createNoteComposite(JFaceResources.getDialogFont(), composite, noteTitle, noteMessage);
 		GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
 		gd.horizontalSpan = 2;
 		noteControl.setLayoutData(gd);

 		initFields();

 		Dialog.applyDialogFont(composite);
 		return composite;
 	}

 	/**
 	 * Creates composite group and sets the default layout data.
 	 *
 	 * @param parent
 	 *            the parent of the new composite
 	 * @param numColumns
 	 *            the number of columns for the new composite
 	 * @param labelText
 	 *            the text label of the new composite
 	 * @return the newly-created composite
 	 */
 	private Composite createGroupComposite(Composite parent, int numColumns, String labelText) {
 		return ControlFactory.createGroup(parent, labelText, numColumns);
 	}

 	/**
 	 * Create the view setting preferences composite widget
 	 */
 	private void createDetectionSettings(Composite parent) {
 		Composite group = createGroupComposite(parent, 1,
 				PreferencesMessages.ScalabilityPreferencePage_detection_group_label);
 		createCheckButton(group, PreferencesMessages.ScalabilityPreferencePage_detection_label,
 				PreferenceConstants.SCALABILITY_ALERT);

 		Composite comp = new Composite(group, SWT.NONE);
 		fLinesToTrigger = createIntegerField(comp, PreferenceConstants.SCALABILITY_NUMBER_OF_LINES,
 				PreferencesMessages.ScalabilityPreferencePage_trigger_lines_label, 1, Integer.MAX_VALUE);
 	}

 	/**
 	 * Create the view setting preferences composite widget
 	 */
 	private void createScalabilityModeSettings(Composite parent) {
 		Composite group = createGroupComposite(parent, 1,
 				PreferencesMessages.ScalabilityPreferencePage_scalabilityMode_group_label);

 		fEnableAll = createCheckButton(group, PreferencesMessages.ScalabilityPreferencePage_scalabilityMode_label,
 				PreferenceConstants.SCALABILITY_ENABLE_ALL);
 		fReconciler = createCheckButton(group, PreferencesMessages.ScalabilityPreferencePage_reconciler_label,
 				PreferenceConstants.SCALABILITY_RECONCILER);
 		createDependency(fEnableAll, PreferenceConstants.SCALABILITY_ENABLE_ALL, fReconciler, true);

 		fSemanticHighlighting = createCheckButton(group,
 				PreferencesMessages.ScalabilityPreferencePage_semanticHighlighting_label,
 				PreferenceConstants.SCALABILITY_SEMANTIC_HIGHLIGHT);
 		createDependency(fEnableAll, PreferenceConstants.SCALABILITY_ENABLE_ALL, fSemanticHighlighting, true);

 		fSyntaxColor = createCheckButton(group, PreferencesMessages.ScalabilityPreferencePage_syntaxColor_label,
 				PreferenceConstants.SCALABILITY_SYNTAX_COLOR);
 		createDependency(fEnableAll, PreferenceConstants.SCALABILITY_ENABLE_ALL, fSyntaxColor, true);

 		fContentAssist = createCheckButton(group, PreferencesMessages.ScalabilityPreferencePage_contentAssist_label,
 				PreferenceConstants.SCALABILITY_PARSER_BASED_CONTENT_ASSIST);
 		createDependency(fEnableAll, PreferenceConstants.SCALABILITY_ENABLE_ALL, fContentAssist, true);

 		fContentAssistAutoActivation = createCheckButton(group,
 				PreferencesMessages.ScalabilityPreferencePage_contentAssist_autoActivation,
 				PreferenceConstants.SCALABILITY_CONTENT_ASSIST_AUTO_ACTIVATION);
 		createDependency(fContentAssist, PreferenceConstants.SCALABILITY_PARSER_BASED_CONTENT_ASSIST,
 				fContentAssistAutoActivation, true);
 		createDependency(fEnableAll, PreferenceConstants.SCALABILITY_ENABLE_ALL, fContentAssistAutoActivation, false);
 	}

 	private void createParserSettings(Composite parent) {
 		Composite group = createGroupComposite(parent, 1,
 				PreferencesMessages.ScalabilityPreferencePage_parserSettings_group_label);

 		fMaximumTrivialExpressions = createScalabilityIntegerField(group,
 				CCorePreferenceConstants.SCALABILITY_SKIP_TRIVIAL_EXPRESSIONS,
 				CCorePreferenceConstants.SCALABILITY_MAXIMUM_TRIVIAL_EXPRESSIONS,
 				PreferencesMessages.ScalabilityPreferencePage_skipTrivialExpressions_label, 1, Integer.MAX_VALUE);
 		fMaximumTrivialExpressions.setPreferenceStore(CUIPlugin.getDefault().getCorePreferenceStore());

 		fMaximumTokens = createScalabilityIntegerField(group, CCorePreferenceConstants.SCALABILITY_LIMIT_TOKENS_PER_TU,
 				CCorePreferenceConstants.SCALABILITY_MAXIMUM_TOKENS,
 				PreferencesMessages.ScalabilityPreferencePage_maximumTokensPerTU_label, 1, 1000000000);
 		fMaximumTokens.setPreferenceStore(CUIPlugin.getDefault().getCorePreferenceStore());
 	}

 	private IntegerFieldEditor createIntegerField(Composite parent, String name, String labelText, int rangeMinimum,
 			int rangeMaximum) {
 		final IntegerFieldEditor integerField = new IntegerFieldEditor(name, labelText, parent);

 		GridData data = (GridData) integerField.getTextControl(parent).getLayoutData();
 		data.horizontalAlignment = GridData.BEGINNING;
 		data.widthHint = convertWidthInCharsToPixels(11);
 		integerField.setPage(this);
 		integerField.setValidateStrategy(StringFieldEditor.VALIDATE_ON_KEY_STROKE);
 		integerField.setValidRange(rangeMinimum, rangeMaximum);
 		integerField.setErrorMessage(NLS.bind(PreferencesMessages.ScalabilityPreferencePage_error,
 				new Object[] { rangeMinimum, rangeMaximum }));
 		integerField.load();
 		integerField.setPropertyChangeListener(new IPropertyChangeListener() {
 			@Override
 			public void propertyChange(PropertyChangeEvent event) {
 				if (event.getProperty().equals(FieldEditor.IS_VALID))
 					setValid(integerField.isValid());
 			}
 		});
 		return integerField;
 	}

 	private ScalabilityIntegerFieldEditor createScalabilityIntegerField(Composite parent, String enable, String name,
 			String labelText, int rangeMinimum, int rangeMaximum) {
 		final ScalabilityIntegerFieldEditor field = new ScalabilityIntegerFieldEditor(enable, name, labelText, parent);

 		GridData data = (GridData) field.getTextControl(parent).getLayoutData();
 		data.horizontalAlignment = GridData.BEGINNING;
 		data.widthHint = convertWidthInCharsToPixels(11);
 		field.setPage(this);
 		field.setValidateStrategy(StringFieldEditor.VALIDATE_ON_KEY_STROKE);
 		field.setValidRange(rangeMinimum, rangeMaximum);
 		field.setErrorMessage(NLS.bind(PreferencesMessages.ScalabilityPreferencePage_error,
 				new Object[] { rangeMinimum, rangeMaximum }));
 		field.load();
 		field.setPropertyChangeListener(new IPropertyChangeListener() {
 			@Override
 			public void propertyChange(PropertyChangeEvent event) {
 				if (event.getProperty().equals(FieldEditor.IS_VALID))
 					setValid(field.isValid());
 			}
 		});
 		return field;
 	}

 	private static void indent(Control control, GridData masterLayoutData) {
 		GridData gridData = new GridData();
 		gridData.horizontalIndent = masterLayoutData.horizontalIndent + 20;
 		control.setLayoutData(gridData);
 	}

 	private void createDependency(final Button master, String masterKey, final Control slave, boolean indent) {
 		if (indent) {
 			indent(slave, (GridData) master.getLayoutData());
 		}
 		boolean masterState = getPreferenceStore().getBoolean(masterKey);
 		slave.setEnabled(!masterState);

 		if (masterState) {
 			((Button) slave).setSelection(masterState);
 		}

 		SelectionListener listener = new SelectionListener() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				slave.setEnabled(!master.getSelection());
 				if (master.getSelection()) {
 					((Button) slave).setSelection(master.getSelection());
 				}
 			}

 			@Override
 			public void widgetDefaultSelected(SelectionEvent e) {
 			}
 		};
 		master.addSelectionListener(listener);
 		fMasterSlaveListeners.add(listener);
 	}

 	/*
 	 * @see IWorkbenchPreferencePage#init(IWorkbench)
 	 */
 	@Override
 	public void init(IWorkbench workbench) {
 	}

 	/*
 	 * @see IPreferencePage#performOk()
 	 */
 	@Override
 	public boolean performOk() {
 		IPreferenceStore prefs = getPreferenceStore();
 		Iterator<Object> iter = fCheckBoxes.keySet().iterator();
 		while (iter.hasNext()) {
 			Button b = (Button) iter.next();
 			String key = fCheckBoxes.get(b);
 			prefs.setValue(key, b.getSelection());
 		}
 		prefs.setValue(PreferenceConstants.SCALABILITY_NUMBER_OF_LINES, fLinesToTrigger.getIntValue());
 		fMaximumTrivialExpressions.store();
 		fMaximumTokens.store();
 		return super.performOk();
 	}

 	/*
 	 * @see PreferencePage#performDefaults()
 	 */
 	@Override
 	protected void performDefaults() {
 		IPreferenceStore prefs = getPreferenceStore();

 		Iterator<Object> iter = fCheckBoxes.keySet().iterator();
 		while (iter.hasNext()) {
 			Button b = (Button) iter.next();
 			String key = fCheckBoxes.get(b);
 			b.setSelection(prefs.getDefaultBoolean(key));
 		}

 		// Update slaves
 		iter = fMasterSlaveListeners.iterator();
 		while (iter.hasNext()) {
 			SelectionListener listener = (SelectionListener) iter.next();
 			listener.widgetSelected(null);
 		}
 		fLinesToTrigger
 				.setStringValue(Integer.toString(prefs.getDefaultInt(PreferenceConstants.SCALABILITY_NUMBER_OF_LINES)));
 		fMaximumTrivialExpressions.loadDefault();
 		fMaximumTokens.loadDefault();
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2014 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
	* Anton Leherbauer (Wind River Systems)
	* Thomas Corbat (IFS)
	*******************************************************************************/
	package org.eclipse.cdt.internal.ui.preferences;

	import java.util.ArrayList;
	import java.util.HashMap;
	import java.util.Iterator;
	import java.util.Map;

	import org.eclipse.cdt.core.CCorePreferenceConstants;
	import org.eclipse.cdt.internal.ui.ICHelpContextIds;
	import org.eclipse.cdt.internal.ui.wizards.dialogfields.Separator;
	import org.eclipse.cdt.ui.CUIPlugin;
	import org.eclipse.cdt.ui.PreferenceConstants;
	import org.eclipse.cdt.utils.ui.controls.ControlFactory;
	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.preference.FieldEditor;
	import org.eclipse.jface.preference.IPreferenceStore;
	import org.eclipse.jface.preference.IntegerFieldEditor;
	import org.eclipse.jface.preference.PreferencePage;
	import org.eclipse.jface.preference.StringFieldEditor;
	import org.eclipse.jface.resource.JFaceResources;
	import org.eclipse.jface.util.IPropertyChangeListener;
	import org.eclipse.jface.util.PropertyChangeEvent;
	import org.eclipse.osgi.util.NLS;
	import org.eclipse.swt.SWT;
	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.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.ui.IWorkbench;
	import org.eclipse.ui.IWorkbenchPreferencePage;
	import org.eclipse.ui.PlatformUI;

	public class ScalabilityPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {

	// Files with this number of lines will trigger scalability mode
	private IntegerFieldEditor fLinesToTrigger;

	private Button fEnableAll;

	private Button fReconciler;

	private Button fSyntaxColor;

	private Button fSemanticHighlighting;

	private Button fContentAssist;

	private Button fContentAssistAutoActivation;

	private ScalabilityIntegerFieldEditor fMaximumTrivialExpressions;

	private ScalabilityIntegerFieldEditor fMaximumTokens;

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

	/**
	* List of master/slave listeners when there's a dependency.
	*
	* @see #createDependency(Button, String, Control)
	*/
	private final ArrayList<Object> fMasterSlaveListeners = new ArrayList<>();

	public ScalabilityPreferencePage() {
	setPreferenceStore(PreferenceConstants.getPreferenceStore());
	setDescription(PreferencesMessages.ScalabilityPreferencePage_description);
	}

	/**
	* Creates a button with the given label and sets the default configuration data.
	*/
	private Button createCheckButton(Composite parent, String label, String key) {
	Button button = new Button(parent, SWT.CHECK \| SWT.LEFT);
	button.setText(label);
	// FieldEditor GridData
	GridData data = new GridData();
	button.setLayoutData(data);
	fCheckBoxes.put(button, key);
	return button;
	}

	private void initFields() {
	IPreferenceStore prefs = getPreferenceStore();

	Iterator<Object> iter = fCheckBoxes.keySet().iterator();
	while (iter.hasNext()) {
	Button b = (Button) iter.next();
	String key = fCheckBoxes.get(b);
	b.setSelection(prefs.getBoolean(key));
	}

	// Update slaves
	iter = fMasterSlaveListeners.iterator();
	while (iter.hasNext()) {
	SelectionListener listener = (SelectionListener) iter.next();
	listener.widgetSelected(null);
	}
	fLinesToTrigger.setStringValue(Integer.toString(prefs.getInt(PreferenceConstants.SCALABILITY_NUMBER_OF_LINES)));
	fMaximumTrivialExpressions.load();
	fMaximumTokens.load();
	}

	/*
	* @see PreferencePage#createControl(Composite)
	*/
	@Override
	public void createControl(Composite parent) {
	super.createControl(parent);
	PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), ICHelpContextIds.SCALABILITY_PREFERENCE_PAGE);
	}

	/*
	* @see PreferencePage#createContents(Composite)
	*/
	@Override
	protected Control createContents(Composite parent) {
	initializeDialogUnits(parent);
	int nColumns = 1;

	Composite composite = new Composite(parent, SWT.NONE);
	GridLayout layout = new GridLayout();
	layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
	layout.marginWidth = 0;
	layout.numColumns = nColumns;
	composite.setLayout(layout);

	GridData data = new GridData();
	data.verticalAlignment = GridData.FILL;
	data.horizontalAlignment = GridData.FILL;
	composite.setLayoutData(data);

	createDetectionSettings(composite);

	new Separator().doFillIntoGrid(composite, nColumns);

	createScalabilityModeSettings(composite);

	new Separator().doFillIntoGrid(composite, nColumns);

	createParserSettings(composite);

	new Separator().doFillIntoGrid(composite, nColumns);

	String noteTitle = PreferencesMessages.ScalabilityPreferencePage_note;
	String noteMessage = PreferencesMessages.ScalabilityPreferencePage_preferenceOnlyForNewEditors;
	Composite noteControl = createNoteComposite(JFaceResources.getDialogFont(), composite, noteTitle, noteMessage);
	GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
	gd.horizontalSpan = 2;
	noteControl.setLayoutData(gd);

	initFields();

	Dialog.applyDialogFont(composite);
	return composite;
	}

	/**
	* Creates composite group and sets the default layout data.
	*
	* @param parent
	* the parent of the new composite
	* @param numColumns
	* the number of columns for the new composite
	* @param labelText
	* the text label of the new composite
	* @return the newly-created composite
	*/
	private Composite createGroupComposite(Composite parent, int numColumns, String labelText) {
	return ControlFactory.createGroup(parent, labelText, numColumns);
	}

	/**
	* Create the view setting preferences composite widget
	*/
	private void createDetectionSettings(Composite parent) {
	Composite group = createGroupComposite(parent, 1,
	PreferencesMessages.ScalabilityPreferencePage_detection_group_label);
	createCheckButton(group, PreferencesMessages.ScalabilityPreferencePage_detection_label,
	PreferenceConstants.SCALABILITY_ALERT);

	Composite comp = new Composite(group, SWT.NONE);
	fLinesToTrigger = createIntegerField(comp, PreferenceConstants.SCALABILITY_NUMBER_OF_LINES,
	PreferencesMessages.ScalabilityPreferencePage_trigger_lines_label, 1, Integer.MAX_VALUE);
	}

	/**
	* Create the view setting preferences composite widget
	*/
	private void createScalabilityModeSettings(Composite parent) {
	Composite group = createGroupComposite(parent, 1,
	PreferencesMessages.ScalabilityPreferencePage_scalabilityMode_group_label);

	fEnableAll = createCheckButton(group, PreferencesMessages.ScalabilityPreferencePage_scalabilityMode_label,
	PreferenceConstants.SCALABILITY_ENABLE_ALL);
	fReconciler = createCheckButton(group, PreferencesMessages.ScalabilityPreferencePage_reconciler_label,
	PreferenceConstants.SCALABILITY_RECONCILER);
	createDependency(fEnableAll, PreferenceConstants.SCALABILITY_ENABLE_ALL, fReconciler, true);

	fSemanticHighlighting = createCheckButton(group,
	PreferencesMessages.ScalabilityPreferencePage_semanticHighlighting_label,
	PreferenceConstants.SCALABILITY_SEMANTIC_HIGHLIGHT);
	createDependency(fEnableAll, PreferenceConstants.SCALABILITY_ENABLE_ALL, fSemanticHighlighting, true);

	fSyntaxColor = createCheckButton(group, PreferencesMessages.ScalabilityPreferencePage_syntaxColor_label,
	PreferenceConstants.SCALABILITY_SYNTAX_COLOR);
	createDependency(fEnableAll, PreferenceConstants.SCALABILITY_ENABLE_ALL, fSyntaxColor, true);

	fContentAssist = createCheckButton(group, PreferencesMessages.ScalabilityPreferencePage_contentAssist_label,
	PreferenceConstants.SCALABILITY_PARSER_BASED_CONTENT_ASSIST);
	createDependency(fEnableAll, PreferenceConstants.SCALABILITY_ENABLE_ALL, fContentAssist, true);

	fContentAssistAutoActivation = createCheckButton(group,
	PreferencesMessages.ScalabilityPreferencePage_contentAssist_autoActivation,
	PreferenceConstants.SCALABILITY_CONTENT_ASSIST_AUTO_ACTIVATION);
	createDependency(fContentAssist, PreferenceConstants.SCALABILITY_PARSER_BASED_CONTENT_ASSIST,
	fContentAssistAutoActivation, true);
	createDependency(fEnableAll, PreferenceConstants.SCALABILITY_ENABLE_ALL, fContentAssistAutoActivation, false);
	}

	private void createParserSettings(Composite parent) {
	Composite group = createGroupComposite(parent, 1,
	PreferencesMessages.ScalabilityPreferencePage_parserSettings_group_label);

	fMaximumTrivialExpressions = createScalabilityIntegerField(group,
	CCorePreferenceConstants.SCALABILITY_SKIP_TRIVIAL_EXPRESSIONS,
	CCorePreferenceConstants.SCALABILITY_MAXIMUM_TRIVIAL_EXPRESSIONS,
	PreferencesMessages.ScalabilityPreferencePage_skipTrivialExpressions_label, 1, Integer.MAX_VALUE);
	fMaximumTrivialExpressions.setPreferenceStore(CUIPlugin.getDefault().getCorePreferenceStore());

	fMaximumTokens = createScalabilityIntegerField(group, CCorePreferenceConstants.SCALABILITY_LIMIT_TOKENS_PER_TU,
	CCorePreferenceConstants.SCALABILITY_MAXIMUM_TOKENS,
	PreferencesMessages.ScalabilityPreferencePage_maximumTokensPerTU_label, 1, 1000000000);
	fMaximumTokens.setPreferenceStore(CUIPlugin.getDefault().getCorePreferenceStore());
	}

	private IntegerFieldEditor createIntegerField(Composite parent, String name, String labelText, int rangeMinimum,
	int rangeMaximum) {
	final IntegerFieldEditor integerField = new IntegerFieldEditor(name, labelText, parent);

	GridData data = (GridData) integerField.getTextControl(parent).getLayoutData();
	data.horizontalAlignment = GridData.BEGINNING;
	data.widthHint = convertWidthInCharsToPixels(11);
	integerField.setPage(this);
	integerField.setValidateStrategy(StringFieldEditor.VALIDATE_ON_KEY_STROKE);
	integerField.setValidRange(rangeMinimum, rangeMaximum);
	integerField.setErrorMessage(NLS.bind(PreferencesMessages.ScalabilityPreferencePage_error,
	new Object[] { rangeMinimum, rangeMaximum }));
	integerField.load();
	integerField.setPropertyChangeListener(new IPropertyChangeListener() {
	@Override
	public void propertyChange(PropertyChangeEvent event) {
	if (event.getProperty().equals(FieldEditor.IS_VALID))
	setValid(integerField.isValid());
	}
	});
	return integerField;
	}

	private ScalabilityIntegerFieldEditor createScalabilityIntegerField(Composite parent, String enable, String name,
	String labelText, int rangeMinimum, int rangeMaximum) {
	final ScalabilityIntegerFieldEditor field = new ScalabilityIntegerFieldEditor(enable, name, labelText, parent);

	GridData data = (GridData) field.getTextControl(parent).getLayoutData();
	data.horizontalAlignment = GridData.BEGINNING;
	data.widthHint = convertWidthInCharsToPixels(11);
	field.setPage(this);
	field.setValidateStrategy(StringFieldEditor.VALIDATE_ON_KEY_STROKE);
	field.setValidRange(rangeMinimum, rangeMaximum);
	field.setErrorMessage(NLS.bind(PreferencesMessages.ScalabilityPreferencePage_error,
	new Object[] { rangeMinimum, rangeMaximum }));
	field.load();
	field.setPropertyChangeListener(new IPropertyChangeListener() {
	@Override
	public void propertyChange(PropertyChangeEvent event) {
	if (event.getProperty().equals(FieldEditor.IS_VALID))
	setValid(field.isValid());
	}
	});
	return field;
	}

	private static void indent(Control control, GridData masterLayoutData) {
	GridData gridData = new GridData();
	gridData.horizontalIndent = masterLayoutData.horizontalIndent + 20;
	control.setLayoutData(gridData);
	}

	private void createDependency(final Button master, String masterKey, final Control slave, boolean indent) {
	if (indent) {
	indent(slave, (GridData) master.getLayoutData());
	}
	boolean masterState = getPreferenceStore().getBoolean(masterKey);
	slave.setEnabled(!masterState);

	if (masterState) {
	((Button) slave).setSelection(masterState);
	}

	SelectionListener listener = new SelectionListener() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	slave.setEnabled(!master.getSelection());
	if (master.getSelection()) {
	((Button) slave).setSelection(master.getSelection());
	}
	}

	@Override
	public void widgetDefaultSelected(SelectionEvent e) {
	}
	};
	master.addSelectionListener(listener);
	fMasterSlaveListeners.add(listener);
	}

	/*
	* @see IWorkbenchPreferencePage#init(IWorkbench)
	*/
	@Override
	public void init(IWorkbench workbench) {
	}

	/*
	* @see IPreferencePage#performOk()
	*/
	@Override
	public boolean performOk() {
	IPreferenceStore prefs = getPreferenceStore();
	Iterator<Object> iter = fCheckBoxes.keySet().iterator();
	while (iter.hasNext()) {
	Button b = (Button) iter.next();
	String key = fCheckBoxes.get(b);
	prefs.setValue(key, b.getSelection());
	}
	prefs.setValue(PreferenceConstants.SCALABILITY_NUMBER_OF_LINES, fLinesToTrigger.getIntValue());
	fMaximumTrivialExpressions.store();
	fMaximumTokens.store();
	return super.performOk();
	}

	/*
	* @see PreferencePage#performDefaults()
	*/
	@Override
	protected void performDefaults() {
	IPreferenceStore prefs = getPreferenceStore();

	Iterator<Object> iter = fCheckBoxes.keySet().iterator();
	while (iter.hasNext()) {
	Button b = (Button) iter.next();
	String key = fCheckBoxes.get(b);
	b.setSelection(prefs.getDefaultBoolean(key));
	}

	// Update slaves
	iter = fMasterSlaveListeners.iterator();
	while (iter.hasNext()) {
	SelectionListener listener = (SelectionListener) iter.next();
	listener.widgetSelected(null);
	}
	fLinesToTrigger
	.setStringValue(Integer.toString(prefs.getDefaultInt(PreferenceConstants.SCALABILITY_NUMBER_OF_LINES)));
	fMaximumTrivialExpressions.loadDefault();
	fMaximumTokens.loadDefault();
	}
	}