org.eclipse.search/search/org/eclipse/search/internal/ui/SearchPreferencePage.java - platform/eclipse.platform.text - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2004 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Common Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/cpl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.search.internal.ui;

 import java.text.Collator;
 import java.util.Arrays;
 import java.util.Comparator;

 import org.eclipse.jface.preference.BooleanFieldEditor;
 import org.eclipse.jface.preference.ColorFieldEditor;
 import org.eclipse.jface.preference.FieldEditorPreferencePage;
 import org.eclipse.jface.preference.IPreferenceStore;
 import org.eclipse.jface.preference.PreferenceConverter;
 import org.eclipse.jface.util.PropertyChangeEvent;
 import org.eclipse.search.internal.ui.util.ComboFieldEditor;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.KeyAdapter;
 import org.eclipse.swt.events.KeyEvent;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.RGB;
 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.Text;
 import org.eclipse.ui.IPerspectiveDescriptor;
 import org.eclipse.ui.IPerspectiveRegistry;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.IWorkbenchPreferencePage;
 import org.eclipse.ui.PlatformUI;
 import org.eclipse.ui.help.WorkbenchHelp;

 /*
  * The page for setting the Search preferences.
  */
 public class SearchPreferencePage extends FieldEditorPreferencePage implements IWorkbenchPreferencePage {

 	public static final String IGNORE_POTENTIAL_MATCHES= "org.eclipse.search.potentialMatch.ignore"; //$NON-NLS-1$
 	public static final String EMPHASIZE_POTENTIAL_MATCHES= "org.eclipse.search.potentialMatch.emphasize"; //$NON-NLS-1$
 	public static final String POTENTIAL_MATCH_FG_COLOR= "org.eclipse.search.potentialMatch.fgColor"; //$NON-NLS-1$
 	public static final String REUSE_EDITOR= "org.eclipse.search.reuseEditor"; //$NON-NLS-1$
 	public static final String DEFAULT_PERSPECTIVE= "org.eclipse.search.defaultPerspective"; //$NON-NLS-1$
 	private static final String NO_DEFAULT_PERSPECTIVE= "org.eclipse.search.defaultPerspective.none"; //$NON-NLS-1$
 	public static final String BRING_VIEW_TO_FRONT= "org.eclipse.search.bringToFront"; //$NON-NLS-1$
 	public static final String LIMIT_TABLE_TO= "org.eclipse.search.limitTableTo"; //$NON-NLS-1$
 	public static final String LIMIT_TABLE= "org.eclipse.search.limitTable"; //$NON-NLS-1$

 	private ColorFieldEditor fColorEditor;
 	private BooleanFieldEditor fEmphasizedCheckbox;
 	private BooleanFieldEditor fIgnorePotentialMatchesCheckbox;
 	private Button fLimitTable;
 	private Text fLimitTableValue;


 	private static class PerspectiveDescriptorComparator implements Comparator {
 		/*
 		 * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
 		 */
 		public int compare(Object o1, Object o2) {
 			if (o1 instanceof IPerspectiveDescriptor && o2 instanceof IPerspectiveDescriptor) {
 				String id1= ((IPerspectiveDescriptor)o1).getLabel();
 				String id2= ((IPerspectiveDescriptor)o2).getLabel();
 				return Collator.getInstance().compare(id1, id2);
 			}
 			return 0;
 		}
 	}


 	public SearchPreferencePage() {
 		super(GRID);
 		setPreferenceStore(SearchPlugin.getDefault().getPreferenceStore());
 	}

 	public static void initDefaults(IPreferenceStore store) {
 		RGB gray= new RGB(85, 85, 85);
 		store.setDefault(EMPHASIZE_POTENTIAL_MATCHES, true);
 		store.setDefault(IGNORE_POTENTIAL_MATCHES, false);
 		PreferenceConverter.setDefault(store, POTENTIAL_MATCH_FG_COLOR, gray);
 		store.setDefault(REUSE_EDITOR, false);
 		store.setDefault(BRING_VIEW_TO_FRONT, true);
 		store.setDefault(DEFAULT_PERSPECTIVE, NO_DEFAULT_PERSPECTIVE);
 		store.setDefault(LIMIT_TABLE_TO, 200);
 		store.setDefault(LIMIT_TABLE, false);
 	}


 	public void createControl(Composite parent) {
 		super.createControl(parent);
 		WorkbenchHelp.setHelp(getControl(), ISearchHelpContextIds.SEARCH_PREFERENCE_PAGE);
 	}

 	protected void createFieldEditors() {
 		BooleanFieldEditor boolEditor= new BooleanFieldEditor(
 			REUSE_EDITOR,
 			SearchMessages.getString("SearchPreferencePage.reuseEditor"), //$NON-NLS-1$
 			getFieldEditorParent()
         );
 		addField(boolEditor);

 		boolEditor= new BooleanFieldEditor(
 				BRING_VIEW_TO_FRONT,
 				SearchMessages.getString("SearchPreferencePage.bringToFront"), //$NON-NLS-1$
 				getFieldEditorParent()
 				);
 		addField(boolEditor);

 		fIgnorePotentialMatchesCheckbox= new BooleanFieldEditor(
 			IGNORE_POTENTIAL_MATCHES,
 			SearchMessages.getString("SearchPreferencePage.ignorePotentialMatches"), //$NON-NLS-1$
 			getFieldEditorParent());
 		addField(fIgnorePotentialMatchesCheckbox);

 		fEmphasizedCheckbox= new BooleanFieldEditor(
 			EMPHASIZE_POTENTIAL_MATCHES,
 			SearchMessages.getString("SearchPreferencePage.emphasizePotentialMatches"), //$NON-NLS-1$
 			getFieldEditorParent());
 		addField(fEmphasizedCheckbox);

 		fColorEditor= new ColorFieldEditor(
 			POTENTIAL_MATCH_FG_COLOR,
 			SearchMessages.getString("SearchPreferencePage.potentialMatchFgColor"), //$NON-NLS-1$
 			getFieldEditorParent()
         );
 		addField(fColorEditor);

 		createTableLimit();

 		fEmphasizedCheckbox.setEnabled(!arePotentialMatchesIgnored(), getFieldEditorParent());
 		fColorEditor.setEnabled(!arePotentialMatchesIgnored() && arePotentialMatchesEmphasized(), getFieldEditorParent());

 		handleDeletedPerspectives();
 		String[][] perspectiveNamesAndIds = getPerspectiveNamesAndIds();
 		ComboFieldEditor comboEditor= new ComboFieldEditor(
 			DEFAULT_PERSPECTIVE,
 			SearchMessages.getString("SearchPreferencePage.defaultPerspective"), //$NON-NLS-1$
 			perspectiveNamesAndIds,
 			getFieldEditorParent());
 		addField(comboEditor);
 	}

 	private void createTableLimit() {
 		Composite parent= new Composite(getFieldEditorParent(), SWT.NONE);
 		GridLayout gl= new GridLayout();
 		gl.numColumns= 2;
 		gl.marginWidth= 0;
 		gl.marginHeight= 0;
 		parent.setLayout(gl);
 		GridData gd= new GridData();
 		gd.horizontalSpan= 2;
 		parent.setLayoutData(gd);

 		fLimitTable= new Button(parent, SWT.CHECK);
 		fLimitTable.setText(SearchMessages.getString("SearchPreferencePage.limit.label")); //$NON-NLS-1$
 		fLimitTable.setLayoutData(new GridData());

 		fLimitTableValue= new Text(parent, SWT.BORDER);
 		gd= new GridData();
 		gd.widthHint= convertWidthInCharsToPixels(6);
 		fLimitTableValue.setLayoutData(gd);

 		applyDialogFont(parent);

 		fLimitTable.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				updateLimitValueEnablement();
 			}

 		});

 		fLimitTableValue.addKeyListener(new KeyAdapter() {
 			public void keyReleased(KeyEvent e) {
 				validateText();
 			}
 		});
 		initLimit();
 	}

 	protected void validateText() {
 		String text= fLimitTableValue.getText();
 		int value= -1;
 		try {
 			value= Integer.valueOf(text).intValue();
 		} catch (NumberFormatException e) {

 		}
 		if (fLimitTable.getSelection() && value <= 0)
 			setErrorMessage(SearchMessages.getString("SearchPreferencePage.limit.error")); //$NON-NLS-1$
 		else
 			setErrorMessage(null);
 	}

 	public void setVisible(boolean state) {
 		handleDeletedPerspectives();
 		super.setVisible(state);
 	}

 	public void propertyChange(PropertyChangeEvent event) {
 		updateFieldEnablement();
 	}

 	public void init(IWorkbench workbench) {
 	}

 	protected void performDefaults() {
 		super.performDefaults();
 		IPreferenceStore preferenceStore= getPreferenceStore();
 		if (preferenceStore != null) {
 			boolean limit= preferenceStore.getDefaultBoolean(LIMIT_TABLE);
 			int count= preferenceStore.getDefaultInt(LIMIT_TABLE_TO);
 			fLimitTable.setSelection(limit);
 			fLimitTableValue.setText(String.valueOf(count));
 		}
 		updateFieldEnablement();
 	}

 	private void initLimit() {
 		IPreferenceStore preferenceStore= getPreferenceStore();
 		if (preferenceStore != null) {
 			boolean limit= preferenceStore.getBoolean(LIMIT_TABLE);
 			int count= preferenceStore.getInt(LIMIT_TABLE_TO);
 			fLimitTable.setSelection(limit);
 			fLimitTableValue.setText(String.valueOf(count));
 		}
 		updateLimitValueEnablement();
 	}

 	public boolean performOk() {
 		IPreferenceStore preferenceStore= SearchPlugin.getDefault().getPreferenceStore();
 		if (preferenceStore != null) {
 			preferenceStore.setValue(LIMIT_TABLE, fLimitTable.getSelection());
 			preferenceStore.setValue(LIMIT_TABLE_TO, Integer.valueOf(fLimitTableValue.getText()).intValue());
 		}
 		return super.performOk();
 	}

 	private void updateFieldEnablement() {
 		boolean arePotentialMatchesIgnored= fIgnorePotentialMatchesCheckbox.getBooleanValue();
 		fEmphasizedCheckbox.setEnabled(!arePotentialMatchesIgnored, getFieldEditorParent());
 		fColorEditor.setEnabled(!arePotentialMatchesIgnored && fEmphasizedCheckbox.getBooleanValue(), getFieldEditorParent());
 		updateLimitValueEnablement();
 		validateText();
 	}

 	private void updateLimitValueEnablement() {
 		fLimitTableValue.setEnabled(fLimitTable.getSelection());
 	}
 	/**
 	 * Return a 2-dimensional array of perspective names and ids.
 	 */
 	private String[][] getPerspectiveNamesAndIds() {

 		IPerspectiveRegistry registry= PlatformUI.getWorkbench().getPerspectiveRegistry();
 		IPerspectiveDescriptor[] perspectiveDescriptors= registry.getPerspectives();

 		Arrays.sort(perspectiveDescriptors, new PerspectiveDescriptorComparator());

 		String[][] table = new String[perspectiveDescriptors.length + 1][2];
 		table[0][0] = SearchMessages.getString("SearchPreferencePage.defaultPerspective.none"); //$NON-NLS-1$;
 		table[0][1] = NO_DEFAULT_PERSPECTIVE;
 		for (int i = 0; i < perspectiveDescriptors.length; i++) {
 			table[i + 1][0] = perspectiveDescriptors[i].getLabel();
 			table[i + 1][1] = perspectiveDescriptors[i].getId();
 		}
 		return table;
 	}

 	private static void handleDeletedPerspectives() {
 		IPreferenceStore store= SearchPlugin.getDefault().getPreferenceStore();
 		String id= store.getString(DEFAULT_PERSPECTIVE);
 		if (PlatformUI.getWorkbench().getPerspectiveRegistry().findPerspectiveWithId(id) == null) {
 			store.putValue(DEFAULT_PERSPECTIVE, NO_DEFAULT_PERSPECTIVE);
 		}
 	}


 	// Accessors to preference values
 	public static String getDefaultPerspectiveId() {
 		handleDeletedPerspectives();
 		IPreferenceStore store= SearchPlugin.getDefault().getPreferenceStore();
 		String id= store.getString(DEFAULT_PERSPECTIVE);
 		if (id == null || id.length() == 0 || id.equals(NO_DEFAULT_PERSPECTIVE))
 			return null;
 		else if (PlatformUI.getWorkbench().getPerspectiveRegistry().findPerspectiveWithId(id) == null) {
 			store.putValue(DEFAULT_PERSPECTIVE, id);
 			return null;
 		}
 		return id;
 	}

 	public static int getTableLimit() {
 		IPreferenceStore store= SearchPlugin.getDefault().getPreferenceStore();
 		return store.getInt(LIMIT_TABLE_TO);
 	}

 	public static boolean isTableLimited() {
 		IPreferenceStore store= SearchPlugin.getDefault().getPreferenceStore();
 		return store.getBoolean(LIMIT_TABLE);
 	}

 	public static boolean isEditorReused() {
 		IPreferenceStore store= SearchPlugin.getDefault().getPreferenceStore();
 		return store.getBoolean(REUSE_EDITOR);
 	}

 	public static boolean isViewBroughtToFront() {
 		IPreferenceStore store= SearchPlugin.getDefault().getPreferenceStore();
 		return store.getBoolean(BRING_VIEW_TO_FRONT);
 	}

 	public static boolean arePotentialMatchesIgnored() {
 		IPreferenceStore store= SearchPlugin.getDefault().getPreferenceStore();
 		return store.getBoolean(IGNORE_POTENTIAL_MATCHES);
 	}

 	public static boolean arePotentialMatchesEmphasized() {
 		IPreferenceStore store= SearchPlugin.getDefault().getPreferenceStore();
 		return store.getBoolean(EMPHASIZE_POTENTIAL_MATCHES);
 	}

 	public static RGB getPotentialMatchForegroundColor() {
 		IPreferenceStore store= SearchPlugin.getDefault().getPreferenceStore();
 		return PreferenceConverter.getColor(store, POTENTIAL_MATCH_FG_COLOR);
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2000, 2004 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Common Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/cpl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.search.internal.ui;

	import java.text.Collator;
	import java.util.Arrays;
	import java.util.Comparator;

	import org.eclipse.jface.preference.BooleanFieldEditor;
	import org.eclipse.jface.preference.ColorFieldEditor;
	import org.eclipse.jface.preference.FieldEditorPreferencePage;
	import org.eclipse.jface.preference.IPreferenceStore;
	import org.eclipse.jface.preference.PreferenceConverter;
	import org.eclipse.jface.util.PropertyChangeEvent;
	import org.eclipse.search.internal.ui.util.ComboFieldEditor;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.KeyAdapter;
	import org.eclipse.swt.events.KeyEvent;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.graphics.RGB;
	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.Text;
	import org.eclipse.ui.IPerspectiveDescriptor;
	import org.eclipse.ui.IPerspectiveRegistry;
	import org.eclipse.ui.IWorkbench;
	import org.eclipse.ui.IWorkbenchPreferencePage;
	import org.eclipse.ui.PlatformUI;
	import org.eclipse.ui.help.WorkbenchHelp;

	/*
	* The page for setting the Search preferences.
	*/
	public class SearchPreferencePage extends FieldEditorPreferencePage implements IWorkbenchPreferencePage {

	public static final String IGNORE_POTENTIAL_MATCHES= "org.eclipse.search.potentialMatch.ignore"; //$NON-NLS-1$
	public static final String EMPHASIZE_POTENTIAL_MATCHES= "org.eclipse.search.potentialMatch.emphasize"; //$NON-NLS-1$
	public static final String POTENTIAL_MATCH_FG_COLOR= "org.eclipse.search.potentialMatch.fgColor"; //$NON-NLS-1$
	public static final String REUSE_EDITOR= "org.eclipse.search.reuseEditor"; //$NON-NLS-1$
	public static final String DEFAULT_PERSPECTIVE= "org.eclipse.search.defaultPerspective"; //$NON-NLS-1$
	private static final String NO_DEFAULT_PERSPECTIVE= "org.eclipse.search.defaultPerspective.none"; //$NON-NLS-1$
	public static final String BRING_VIEW_TO_FRONT= "org.eclipse.search.bringToFront"; //$NON-NLS-1$
	public static final String LIMIT_TABLE_TO= "org.eclipse.search.limitTableTo"; //$NON-NLS-1$
	public static final String LIMIT_TABLE= "org.eclipse.search.limitTable"; //$NON-NLS-1$

	private ColorFieldEditor fColorEditor;
	private BooleanFieldEditor fEmphasizedCheckbox;
	private BooleanFieldEditor fIgnorePotentialMatchesCheckbox;
	private Button fLimitTable;
	private Text fLimitTableValue;


	private static class PerspectiveDescriptorComparator implements Comparator {
	/*
	* @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
	*/
	public int compare(Object o1, Object o2) {
	if (o1 instanceof IPerspectiveDescriptor && o2 instanceof IPerspectiveDescriptor) {
	String id1= ((IPerspectiveDescriptor)o1).getLabel();
	String id2= ((IPerspectiveDescriptor)o2).getLabel();
	return Collator.getInstance().compare(id1, id2);
	}
	return 0;
	}
	}



	public SearchPreferencePage() {
	super(GRID);
	setPreferenceStore(SearchPlugin.getDefault().getPreferenceStore());
	}

	public static void initDefaults(IPreferenceStore store) {
	RGB gray= new RGB(85, 85, 85);
	store.setDefault(EMPHASIZE_POTENTIAL_MATCHES, true);
	store.setDefault(IGNORE_POTENTIAL_MATCHES, false);
	PreferenceConverter.setDefault(store, POTENTIAL_MATCH_FG_COLOR, gray);
	store.setDefault(REUSE_EDITOR, false);
	store.setDefault(BRING_VIEW_TO_FRONT, true);
	store.setDefault(DEFAULT_PERSPECTIVE, NO_DEFAULT_PERSPECTIVE);
	store.setDefault(LIMIT_TABLE_TO, 200);
	store.setDefault(LIMIT_TABLE, false);
	}


	public void createControl(Composite parent) {
	super.createControl(parent);
	WorkbenchHelp.setHelp(getControl(), ISearchHelpContextIds.SEARCH_PREFERENCE_PAGE);
	}

	protected void createFieldEditors() {
	BooleanFieldEditor boolEditor= new BooleanFieldEditor(
	REUSE_EDITOR,
	SearchMessages.getString("SearchPreferencePage.reuseEditor"), //$NON-NLS-1$
	getFieldEditorParent()
	);
	addField(boolEditor);

	boolEditor= new BooleanFieldEditor(
	BRING_VIEW_TO_FRONT,
	SearchMessages.getString("SearchPreferencePage.bringToFront"), //$NON-NLS-1$
	getFieldEditorParent()
	);
	addField(boolEditor);

	fIgnorePotentialMatchesCheckbox= new BooleanFieldEditor(
	IGNORE_POTENTIAL_MATCHES,
	SearchMessages.getString("SearchPreferencePage.ignorePotentialMatches"), //$NON-NLS-1$
	getFieldEditorParent());
	addField(fIgnorePotentialMatchesCheckbox);

	fEmphasizedCheckbox= new BooleanFieldEditor(
	EMPHASIZE_POTENTIAL_MATCHES,
	SearchMessages.getString("SearchPreferencePage.emphasizePotentialMatches"), //$NON-NLS-1$
	getFieldEditorParent());
	addField(fEmphasizedCheckbox);

	fColorEditor= new ColorFieldEditor(
	POTENTIAL_MATCH_FG_COLOR,
	SearchMessages.getString("SearchPreferencePage.potentialMatchFgColor"), //$NON-NLS-1$
	getFieldEditorParent()
	);
	addField(fColorEditor);

	createTableLimit();

	fEmphasizedCheckbox.setEnabled(!arePotentialMatchesIgnored(), getFieldEditorParent());
	fColorEditor.setEnabled(!arePotentialMatchesIgnored() && arePotentialMatchesEmphasized(), getFieldEditorParent());

	handleDeletedPerspectives();
	String[][] perspectiveNamesAndIds = getPerspectiveNamesAndIds();
	ComboFieldEditor comboEditor= new ComboFieldEditor(
	DEFAULT_PERSPECTIVE,
	SearchMessages.getString("SearchPreferencePage.defaultPerspective"), //$NON-NLS-1$
	perspectiveNamesAndIds,
	getFieldEditorParent());
	addField(comboEditor);
	}

	private void createTableLimit() {
	Composite parent= new Composite(getFieldEditorParent(), SWT.NONE);
	GridLayout gl= new GridLayout();
	gl.numColumns= 2;
	gl.marginWidth= 0;
	gl.marginHeight= 0;
	parent.setLayout(gl);
	GridData gd= new GridData();
	gd.horizontalSpan= 2;
	parent.setLayoutData(gd);

	fLimitTable= new Button(parent, SWT.CHECK);
	fLimitTable.setText(SearchMessages.getString("SearchPreferencePage.limit.label")); //$NON-NLS-1$
	fLimitTable.setLayoutData(new GridData());

	fLimitTableValue= new Text(parent, SWT.BORDER);
	gd= new GridData();
	gd.widthHint= convertWidthInCharsToPixels(6);
	fLimitTableValue.setLayoutData(gd);

	applyDialogFont(parent);

	fLimitTable.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	updateLimitValueEnablement();
	}

	});

	fLimitTableValue.addKeyListener(new KeyAdapter() {
	public void keyReleased(KeyEvent e) {
	validateText();
	}
	});
	initLimit();
	}

	protected void validateText() {
	String text= fLimitTableValue.getText();
	int value= -1;
	try {
	value= Integer.valueOf(text).intValue();
	} catch (NumberFormatException e) {

	}
	if (fLimitTable.getSelection() && value <= 0)
	setErrorMessage(SearchMessages.getString("SearchPreferencePage.limit.error")); //$NON-NLS-1$
	else
	setErrorMessage(null);
	}

	public void setVisible(boolean state) {
	handleDeletedPerspectives();
	super.setVisible(state);
	}

	public void propertyChange(PropertyChangeEvent event) {
	updateFieldEnablement();
	}

	public void init(IWorkbench workbench) {
	}

	protected void performDefaults() {
	super.performDefaults();
	IPreferenceStore preferenceStore= getPreferenceStore();
	if (preferenceStore != null) {
	boolean limit= preferenceStore.getDefaultBoolean(LIMIT_TABLE);
	int count= preferenceStore.getDefaultInt(LIMIT_TABLE_TO);
	fLimitTable.setSelection(limit);
	fLimitTableValue.setText(String.valueOf(count));
	}
	updateFieldEnablement();
	}

	private void initLimit() {
	IPreferenceStore preferenceStore= getPreferenceStore();
	if (preferenceStore != null) {
	boolean limit= preferenceStore.getBoolean(LIMIT_TABLE);
	int count= preferenceStore.getInt(LIMIT_TABLE_TO);
	fLimitTable.setSelection(limit);
	fLimitTableValue.setText(String.valueOf(count));
	}
	updateLimitValueEnablement();
	}

	public boolean performOk() {
	IPreferenceStore preferenceStore= SearchPlugin.getDefault().getPreferenceStore();
	if (preferenceStore != null) {
	preferenceStore.setValue(LIMIT_TABLE, fLimitTable.getSelection());
	preferenceStore.setValue(LIMIT_TABLE_TO, Integer.valueOf(fLimitTableValue.getText()).intValue());
	}
	return super.performOk();
	}

	private void updateFieldEnablement() {
	boolean arePotentialMatchesIgnored= fIgnorePotentialMatchesCheckbox.getBooleanValue();
	fEmphasizedCheckbox.setEnabled(!arePotentialMatchesIgnored, getFieldEditorParent());
	fColorEditor.setEnabled(!arePotentialMatchesIgnored && fEmphasizedCheckbox.getBooleanValue(), getFieldEditorParent());
	updateLimitValueEnablement();
	validateText();
	}

	private void updateLimitValueEnablement() {
	fLimitTableValue.setEnabled(fLimitTable.getSelection());
	}
	/**
	* Return a 2-dimensional array of perspective names and ids.
	*/
	private String[][] getPerspectiveNamesAndIds() {

	IPerspectiveRegistry registry= PlatformUI.getWorkbench().getPerspectiveRegistry();
	IPerspectiveDescriptor[] perspectiveDescriptors= registry.getPerspectives();

	Arrays.sort(perspectiveDescriptors, new PerspectiveDescriptorComparator());

	String[][] table = new String[perspectiveDescriptors.length + 1][2];
	table[0][0] = SearchMessages.getString("SearchPreferencePage.defaultPerspective.none"); //$NON-NLS-1$;
	table[0][1] = NO_DEFAULT_PERSPECTIVE;
	for (int i = 0; i < perspectiveDescriptors.length; i++) {
	table[i + 1][0] = perspectiveDescriptors[i].getLabel();
	table[i + 1][1] = perspectiveDescriptors[i].getId();
	}
	return table;
	}

	private static void handleDeletedPerspectives() {
	IPreferenceStore store= SearchPlugin.getDefault().getPreferenceStore();
	String id= store.getString(DEFAULT_PERSPECTIVE);
	if (PlatformUI.getWorkbench().getPerspectiveRegistry().findPerspectiveWithId(id) == null) {
	store.putValue(DEFAULT_PERSPECTIVE, NO_DEFAULT_PERSPECTIVE);
	}
	}


	// Accessors to preference values
	public static String getDefaultPerspectiveId() {
	handleDeletedPerspectives();
	IPreferenceStore store= SearchPlugin.getDefault().getPreferenceStore();
	String id= store.getString(DEFAULT_PERSPECTIVE);
	if (id == null \|\| id.length() == 0 \|\| id.equals(NO_DEFAULT_PERSPECTIVE))
	return null;
	else if (PlatformUI.getWorkbench().getPerspectiveRegistry().findPerspectiveWithId(id) == null) {
	store.putValue(DEFAULT_PERSPECTIVE, id);
	return null;
	}
	return id;
	}

	public static int getTableLimit() {
	IPreferenceStore store= SearchPlugin.getDefault().getPreferenceStore();
	return store.getInt(LIMIT_TABLE_TO);
	}

	public static boolean isTableLimited() {
	IPreferenceStore store= SearchPlugin.getDefault().getPreferenceStore();
	return store.getBoolean(LIMIT_TABLE);
	}

	public static boolean isEditorReused() {
	IPreferenceStore store= SearchPlugin.getDefault().getPreferenceStore();
	return store.getBoolean(REUSE_EDITOR);
	}

	public static boolean isViewBroughtToFront() {
	IPreferenceStore store= SearchPlugin.getDefault().getPreferenceStore();
	return store.getBoolean(BRING_VIEW_TO_FRONT);
	}

	public static boolean arePotentialMatchesIgnored() {
	IPreferenceStore store= SearchPlugin.getDefault().getPreferenceStore();
	return store.getBoolean(IGNORE_POTENTIAL_MATCHES);
	}

	public static boolean arePotentialMatchesEmphasized() {
	IPreferenceStore store= SearchPlugin.getDefault().getPreferenceStore();
	return store.getBoolean(EMPHASIZE_POTENTIAL_MATCHES);
	}

	public static RGB getPotentialMatchForegroundColor() {
	IPreferenceStore store= SearchPlugin.getDefault().getPreferenceStore();
	return PreferenceConverter.getColor(store, POTENTIAL_MATCH_FG_COLOR);
	}

	}