bundles/org.eclipse.wst.sse.ui/src/org/eclipse/wst/sse/ui/internal/preferences/ui/StructuredTextEditorPreferencePage.java - sourceediting/webtools.sourceediting - Git at Google

 /*******************************************************************************
  * Copyright (c) 2001, 2004 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *     Jens Lukowski/Innoopract - initial renaming/restructuring
  *
  *******************************************************************************/
 package org.eclipse.wst.sse.ui.internal.preferences.ui;

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

 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.dialogs.DialogPage;
 import org.eclipse.jface.dialogs.IMessageProvider;
 import org.eclipse.jface.preference.PreferenceConverter;
 import org.eclipse.jface.preference.PreferencePage;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.accessibility.ACC;
 import org.eclipse.swt.accessibility.AccessibleAdapter;
 import org.eclipse.swt.accessibility.AccessibleEvent;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.events.SelectionListener;
 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.Control;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.List;
 import org.eclipse.swt.widgets.TabFolder;
 import org.eclipse.swt.widgets.TabItem;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.IWorkbenchPreferencePage;
 import org.eclipse.ui.PlatformUI;
 import org.eclipse.ui.dialogs.PreferenceLinkArea;
 import org.eclipse.ui.preferences.IWorkbenchPreferenceContainer;
 import org.eclipse.wst.sse.ui.internal.SSEUIMessages;
 import org.eclipse.wst.sse.ui.internal.SSEUIPlugin;
 import org.eclipse.wst.sse.ui.internal.editor.IHelpContextIds;
 import org.eclipse.wst.sse.ui.internal.preferences.EditorPreferenceNames;
 import org.eclipse.wst.sse.ui.internal.preferences.OverlayPreferenceStore;
 import org.eclipse.wst.sse.ui.internal.preferences.TabFolderLayout;
 import org.eclipse.wst.sse.ui.internal.projection.IStructuredTextFoldingProvider;
 import org.eclipse.wst.sse.ui.internal.provisional.preferences.CommonEditorPreferenceNames;

 /**
  * Gutted version of JavaEditorPreferencePage
  *
  * @author pavery
  */
 public class StructuredTextEditorPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {
 	private ColorEditor fAppearanceColorEditor;
 	private List fAppearanceColorList;

 	private final String[][] fAppearanceColorListModel = new String[][]{{SSEUIMessages.StructuredTextEditorPreferencePage_2, EditorPreferenceNames.MATCHING_BRACKETS_COLOR}}; //$NON-NLS-1$
 	private Map fCheckBoxes = new HashMap();
 	private SelectionListener fCheckBoxListener = new SelectionListener() {
 		public void widgetDefaultSelected(SelectionEvent e) {
 		}

 		public void widgetSelected(SelectionEvent e) {
 			Button button = (Button) e.widget;
 			fOverlayStore.setValue((String) fCheckBoxes.get(button), button.getSelection());
 		}
 	};

 	private Map fColorButtons = new HashMap();

 	private ArrayList fNumberFields = new ArrayList();
 	private OverlayPreferenceStore fOverlayStore;
 	/** Button controlling default setting of the selected reference provider. */
 	// TODO: private field never read locally
 	Button fSetDefaultButton;
 	private IPreferenceTab[] fTabs = null;
 	private Map fTextFields = new HashMap();

 	public StructuredTextEditorPreferencePage() {
 		setDescription(SSEUIMessages.StructuredTextEditorPreferencePage_6); //$NON-NLS-1$
 		setPreferenceStore(SSEUIPlugin.getDefault().getPreferenceStore());

 		fOverlayStore = new OverlayPreferenceStore(getPreferenceStore(), createOverlayStoreKeys());
 	}

 	private Button addCheckBox(Composite parent, String label, String key, int indentation) {
 		Button checkBox = new Button(parent, SWT.CHECK);
 		checkBox.setText(label);

 		GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
 		gd.horizontalIndent = indentation;
 		gd.horizontalSpan = 2;
 		checkBox.setLayoutData(gd);
 		checkBox.addSelectionListener(fCheckBoxListener);

 		fCheckBoxes.put(checkBox, key);

 		return checkBox;
 	}

 	/**
 	 * Applies the status to the status line of a dialog page.
 	 */
 	public void applyToStatusLine(DialogPage page, IStatus status) {
 		String message = status.getMessage();
 		switch (status.getSeverity()) {
 			case IStatus.OK :
 				page.setMessage(message, IMessageProvider.NONE);
 				page.setErrorMessage(null);
 				break;
 			case IStatus.WARNING :
 				page.setMessage(message, IMessageProvider.WARNING);
 				page.setErrorMessage(null);
 				break;
 			case IStatus.INFO :
 				page.setMessage(message, IMessageProvider.INFORMATION);
 				page.setErrorMessage(null);
 				break;
 			default :
 				if (message.length() == 0) {
 					message = null;
 				}
 				page.setMessage(null);
 				page.setErrorMessage(message);
 				break;
 		}
 	}

 	private Control createAppearancePage(Composite parent) {
 		Composite appearanceComposite = new Composite(parent, SWT.NONE);
 		GridLayout layout = new GridLayout();
 		layout.numColumns = 2;
 		appearanceComposite.setLayout(layout);

 		String label = SSEUIMessages.StructuredTextEditorPreferencePage_20; //$NON-NLS-1$
 		addCheckBox(appearanceComposite, label, EditorPreferenceNames.MATCHING_BRACKETS, 0);

 		label = SSEUIMessages.StructuredTextEditorPreferencePage_30; //$NON-NLS-1$
 		addCheckBox(appearanceComposite, label, CommonEditorPreferenceNames.EVALUATE_TEMPORARY_PROBLEMS, 0);

 		PreferenceLinkArea contentTypeArea = new PreferenceLinkArea(appearanceComposite, SWT.NONE, "ValidationPreferencePage", SSEUIMessages.StructuredTextEditorPreferencePage_40, (IWorkbenchPreferenceContainer) getContainer(), null); //$NON-NLS-1$

 		GridData data = new GridData(GridData.FILL_HORIZONTAL | GridData.GRAB_HORIZONTAL);
 		data.horizontalIndent = 20;
 		contentTypeArea.getControl().setLayoutData(data);

 		label = SSEUIMessages.StructuredTextEditorPreferencePage_39;
 		addCheckBox(appearanceComposite, label, EditorPreferenceNames.SHOW_UNKNOWN_CONTENT_TYPE_MSG, 0);

 		label = SSEUIMessages.StructuredTextEditorPreferencePage_3;
 		addCheckBox(appearanceComposite, label, IStructuredTextFoldingProvider.FOLDING_ENABLED, 0);

 		Label l = new Label(appearanceComposite, SWT.LEFT);
 		GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
 		gd.horizontalSpan = 2;
 		gd.heightHint = convertHeightInCharsToPixels(1) / 2;
 		l.setLayoutData(gd);

 		l = new Label(appearanceComposite, SWT.LEFT);
 		l.setText(SSEUIMessages.StructuredTextEditorPreferencePage_23); //$NON-NLS-1$
 		gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
 		gd.horizontalSpan = 2;
 		l.setLayoutData(gd);

 		Composite editorComposite = new Composite(appearanceComposite, SWT.NONE);
 		layout = new GridLayout();
 		layout.numColumns = 2;
 		layout.marginHeight = 0;
 		layout.marginWidth = 0;
 		editorComposite.setLayout(layout);
 		gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.FILL_VERTICAL);
 		gd.horizontalSpan = 2;
 		editorComposite.setLayoutData(gd);

 		fAppearanceColorList = new List(editorComposite, SWT.SINGLE | SWT.V_SCROLL | SWT.BORDER);
 		gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.FILL_HORIZONTAL);
 		gd.heightHint = convertHeightInCharsToPixels(5);
 		fAppearanceColorList.setLayoutData(gd);

 		Composite stylesComposite = new Composite(editorComposite, SWT.NONE);
 		layout = new GridLayout();
 		layout.marginHeight = 0;
 		layout.marginWidth = 0;
 		layout.numColumns = 2;
 		stylesComposite.setLayout(layout);
 		stylesComposite.setLayoutData(new GridData(GridData.FILL_BOTH));

 		l = new Label(stylesComposite, SWT.LEFT);
 		// needs to be made final so label can be set in
 		// foregroundcolorbutton's acc listener
 		final String buttonLabel = SSEUIMessages.StructuredTextEditorPreferencePage_24; //$NON-NLS-1$
 		l.setText(buttonLabel);
 		gd = new GridData();
 		gd.horizontalAlignment = GridData.BEGINNING;
 		l.setLayoutData(gd);

 		fAppearanceColorEditor = new ColorEditor(stylesComposite);
 		Button foregroundColorButton = fAppearanceColorEditor.getButton();
 		gd = new GridData(GridData.FILL_HORIZONTAL);
 		gd.horizontalAlignment = GridData.BEGINNING;
 		foregroundColorButton.setLayoutData(gd);

 		fAppearanceColorList.addSelectionListener(new SelectionListener() {
 			public void widgetDefaultSelected(SelectionEvent e) {
 				// do nothing
 			}

 			public void widgetSelected(SelectionEvent e) {
 				handleAppearanceColorListSelection();
 			}
 		});
 		foregroundColorButton.addSelectionListener(new SelectionListener() {
 			public void widgetDefaultSelected(SelectionEvent e) {
 				// do nothing
 			}

 			public void widgetSelected(SelectionEvent e) {
 				int i = fAppearanceColorList.getSelectionIndex();
 				String key = fAppearanceColorListModel[i][1];

 				PreferenceConverter.setValue(fOverlayStore, key, fAppearanceColorEditor.getColorValue());
 			}
 		});

 		// bug2541 - associate color label to button's label field
 		foregroundColorButton.getAccessible().addAccessibleListener(new AccessibleAdapter() {
 			public void getName(AccessibleEvent e) {
 				if (e.childID == ACC.CHILDID_SELF)
 					e.result = buttonLabel;
 			}
 		});

 		PlatformUI.getWorkbench().getHelpSystem().setHelp(appearanceComposite, IHelpContextIds.PREFSTE_APPEARANCE_HELPID);
 		return appearanceComposite;
 	}

 	/*
 	 * @see PreferencePage#createContents(Composite)
 	 */
 	protected Control createContents(Composite parent) {
 		// need to create tabs before loading/starting overlaystore in case
 		// tabs also add values
 		IPreferenceTab hoversTab = new TextHoverPreferenceTab(this, fOverlayStore);

 		fOverlayStore.load();
 		fOverlayStore.start();

 		TabFolder folder = new TabFolder(parent, SWT.NONE);
 		folder.setLayout(new TabFolderLayout());
 		folder.setLayoutData(new GridData(GridData.FILL_BOTH));

 		TabItem item = new TabItem(folder, SWT.NONE);
 		item.setText(SSEUIMessages.StructuredTextEditorPreferencePage_0); //$NON-NLS-1$
 		item.setControl(createAppearancePage(folder));

 		item = new TabItem(folder, SWT.NONE);
 		item.setText(hoversTab.getTitle());
 		item.setControl(hoversTab.createContents(folder));

 		fTabs = new IPreferenceTab[]{hoversTab};

 		initialize();

 		Dialog.applyDialogFont(folder);
 		return folder;
 	}

 	/*
 	 * @see PreferencePage#createControl(Composite)
 	 */
 	public void createControl(Composite parent) {
 		super.createControl(parent);
 		// WorkbenchHelp.setHelp(getControl(),
 		// IJavaHelpContextIds.JAVA_EDITOR_PREFERENCE_PAGE);
 	}

 	private OverlayPreferenceStore.OverlayKey[] createOverlayStoreKeys() {
 		ArrayList overlayKeys = new ArrayList();

 		overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, EditorPreferenceNames.MATCHING_BRACKETS_COLOR));
 		overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, EditorPreferenceNames.MATCHING_BRACKETS));

 		overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, CommonEditorPreferenceNames.EVALUATE_TEMPORARY_PROBLEMS));
 		overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, EditorPreferenceNames.SHOW_UNKNOWN_CONTENT_TYPE_MSG));

 		overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, IStructuredTextFoldingProvider.FOLDING_ENABLED));

 		OverlayPreferenceStore.OverlayKey[] keys = new OverlayPreferenceStore.OverlayKey[overlayKeys.size()];
 		overlayKeys.toArray(keys);
 		return keys;
 	}

 	/*
 	 * @see DialogPage#dispose()
 	 */
 	public void dispose() {
 		if (fOverlayStore != null) {
 			fOverlayStore.stop();
 			fOverlayStore = null;
 		}

 		super.dispose();
 	}

 	private void handleAppearanceColorListSelection() {
 		int i = fAppearanceColorList.getSelectionIndex();
 		String key = fAppearanceColorListModel[i][1];
 		RGB rgb = PreferenceConverter.getColor(fOverlayStore, key);
 		fAppearanceColorEditor.setColorValue(rgb);
 	}

 	/*
 	 * @see IWorkbenchPreferencePage#init()
 	 */
 	public void init(IWorkbench workbench) {
 		// nothing to do
 	}

 	private void initialize() {
 		initializeFields();

 		for (int i = 0; i < fAppearanceColorListModel.length; i++)
 			fAppearanceColorList.add(fAppearanceColorListModel[i][0]);
 		fAppearanceColorList.getDisplay().asyncExec(new Runnable() {
 			public void run() {
 				if (fAppearanceColorList != null && !fAppearanceColorList.isDisposed()) {
 					fAppearanceColorList.select(0);
 					handleAppearanceColorListSelection();
 				}
 			}
 		});
 	}

 	private void initializeFields() {
 		Iterator e = fColorButtons.keySet().iterator();
 		while (e.hasNext()) {
 			ColorEditor c = (ColorEditor) e.next();
 			String key = (String) fColorButtons.get(c);
 			RGB rgb = PreferenceConverter.getColor(fOverlayStore, key);
 			c.setColorValue(rgb);
 		}

 		e = fCheckBoxes.keySet().iterator();
 		while (e.hasNext()) {
 			Button b = (Button) e.next();
 			String key = (String) fCheckBoxes.get(b);
 			b.setSelection(fOverlayStore.getBoolean(key));
 		}

 		e = fTextFields.keySet().iterator();
 		while (e.hasNext()) {
 			Text t = (Text) e.next();
 			String key = (String) fTextFields.get(t);
 			t.setText(fOverlayStore.getString(key));
 		}
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.jface.preference.PreferencePage#performApply()
 	 */
 	protected void performApply() {
 		for (int i = 0; i < fTabs.length; i++) {
 			fTabs[i].performApply();
 		}
 		super.performApply();
 	}

 	/*
 	 * @see PreferencePage#performDefaults()
 	 */
 	protected void performDefaults() {
 		fOverlayStore.loadDefaults();

 		initializeFields();

 		handleAppearanceColorListSelection();

 		for (int i = 0; i < fTabs.length; i++) {
 			fTabs[i].performDefaults();
 		}

 		super.performDefaults();

 		// there is currently no need for a viewer
 		// fPreviewViewer.invalidateTextPresentation();
 	}

 	/*
 	 * @see PreferencePage#performOk()
 	 */
 	public boolean performOk() {
 		for (int i = 0; i < fTabs.length; i++) {
 			fTabs[i].performOk();
 		}

 		fOverlayStore.propagate();
 		SSEUIPlugin.getDefault().savePluginPreferences();

 		// tab width is also a model-side preference so need to set it
 		// TODO need to handle tab width for formatter somehow
 		// int tabWidth =
 		// getPreferenceStore().getInt(AbstractDecoratedTextEditorPreferenceConstants.EDITOR_TAB_WIDTH);
 		// ModelPlugin.getDefault().getPluginPreferences().setValue(CommonModelPreferenceNames.TAB_WIDTH,
 		// tabWidth);
 		// ModelPlugin.getDefault().savePluginPreferences();

 		return true;
 	}

 	void updateStatus(IStatus status) {
 		if (!status.matches(IStatus.ERROR)) {
 			for (int i = 0; i < fNumberFields.size(); i++) {
 				Text text = (Text) fNumberFields.get(i);
 				IStatus s = validatePositiveNumber(text.getText());
 				status = s.getSeverity() > status.getSeverity() ? s : status;
 			}
 		}

 		setValid(!status.matches(IStatus.ERROR));
 		applyToStatusLine(this, status);
 	}

 	private IStatus validatePositiveNumber(String number) {
 		StatusInfo status = new StatusInfo();
 		if (number.length() == 0) {
 			status.setError(SSEUIMessages.StructuredTextEditorPreferencePage_37);
 		}
 		else {
 			try {
 				int value = Integer.parseInt(number);
 				if (value < 0)
 					status.setError(number + SSEUIMessages.StructuredTextEditorPreferencePage_38);
 			}
 			catch (NumberFormatException e) {
 				status.setError(number + SSEUIMessages.StructuredTextEditorPreferencePage_38);
 			}
 		}
 		return status;
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2001, 2004 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	* Jens Lukowski/Innoopract - initial renaming/restructuring
	*
	*******************************************************************************/
	package org.eclipse.wst.sse.ui.internal.preferences.ui;

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

	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.dialogs.DialogPage;
	import org.eclipse.jface.dialogs.IMessageProvider;
	import org.eclipse.jface.preference.PreferenceConverter;
	import org.eclipse.jface.preference.PreferencePage;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.accessibility.ACC;
	import org.eclipse.swt.accessibility.AccessibleAdapter;
	import org.eclipse.swt.accessibility.AccessibleEvent;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.events.SelectionListener;
	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.Control;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.List;
	import org.eclipse.swt.widgets.TabFolder;
	import org.eclipse.swt.widgets.TabItem;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.ui.IWorkbench;
	import org.eclipse.ui.IWorkbenchPreferencePage;
	import org.eclipse.ui.PlatformUI;
	import org.eclipse.ui.dialogs.PreferenceLinkArea;
	import org.eclipse.ui.preferences.IWorkbenchPreferenceContainer;
	import org.eclipse.wst.sse.ui.internal.SSEUIMessages;
	import org.eclipse.wst.sse.ui.internal.SSEUIPlugin;
	import org.eclipse.wst.sse.ui.internal.editor.IHelpContextIds;
	import org.eclipse.wst.sse.ui.internal.preferences.EditorPreferenceNames;
	import org.eclipse.wst.sse.ui.internal.preferences.OverlayPreferenceStore;
	import org.eclipse.wst.sse.ui.internal.preferences.TabFolderLayout;
	import org.eclipse.wst.sse.ui.internal.projection.IStructuredTextFoldingProvider;
	import org.eclipse.wst.sse.ui.internal.provisional.preferences.CommonEditorPreferenceNames;

	/**
	* Gutted version of JavaEditorPreferencePage
	*
	* @author pavery
	*/
	public class StructuredTextEditorPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {
	private ColorEditor fAppearanceColorEditor;
	private List fAppearanceColorList;

	private final String[][] fAppearanceColorListModel = new String[][]{{SSEUIMessages.StructuredTextEditorPreferencePage_2, EditorPreferenceNames.MATCHING_BRACKETS_COLOR}}; //$NON-NLS-1$
	private Map fCheckBoxes = new HashMap();
	private SelectionListener fCheckBoxListener = new SelectionListener() {
	public void widgetDefaultSelected(SelectionEvent e) {
	}

	public void widgetSelected(SelectionEvent e) {
	Button button = (Button) e.widget;
	fOverlayStore.setValue((String) fCheckBoxes.get(button), button.getSelection());
	}
	};

	private Map fColorButtons = new HashMap();

	private ArrayList fNumberFields = new ArrayList();
	private OverlayPreferenceStore fOverlayStore;
	/** Button controlling default setting of the selected reference provider. */
	// TODO: private field never read locally
	Button fSetDefaultButton;
	private IPreferenceTab[] fTabs = null;
	private Map fTextFields = new HashMap();

	public StructuredTextEditorPreferencePage() {
	setDescription(SSEUIMessages.StructuredTextEditorPreferencePage_6); //$NON-NLS-1$
	setPreferenceStore(SSEUIPlugin.getDefault().getPreferenceStore());

	fOverlayStore = new OverlayPreferenceStore(getPreferenceStore(), createOverlayStoreKeys());
	}

	private Button addCheckBox(Composite parent, String label, String key, int indentation) {
	Button checkBox = new Button(parent, SWT.CHECK);
	checkBox.setText(label);

	GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
	gd.horizontalIndent = indentation;
	gd.horizontalSpan = 2;
	checkBox.setLayoutData(gd);
	checkBox.addSelectionListener(fCheckBoxListener);

	fCheckBoxes.put(checkBox, key);

	return checkBox;
	}

	/**
	* Applies the status to the status line of a dialog page.
	*/
	public void applyToStatusLine(DialogPage page, IStatus status) {
	String message = status.getMessage();
	switch (status.getSeverity()) {
	case IStatus.OK :
	page.setMessage(message, IMessageProvider.NONE);
	page.setErrorMessage(null);
	break;
	case IStatus.WARNING :
	page.setMessage(message, IMessageProvider.WARNING);
	page.setErrorMessage(null);
	break;
	case IStatus.INFO :
	page.setMessage(message, IMessageProvider.INFORMATION);
	page.setErrorMessage(null);
	break;
	default :
	if (message.length() == 0) {
	message = null;
	}
	page.setMessage(null);
	page.setErrorMessage(message);
	break;
	}
	}

	private Control createAppearancePage(Composite parent) {
	Composite appearanceComposite = new Composite(parent, SWT.NONE);
	GridLayout layout = new GridLayout();
	layout.numColumns = 2;
	appearanceComposite.setLayout(layout);

	String label = SSEUIMessages.StructuredTextEditorPreferencePage_20; //$NON-NLS-1$
	addCheckBox(appearanceComposite, label, EditorPreferenceNames.MATCHING_BRACKETS, 0);

	label = SSEUIMessages.StructuredTextEditorPreferencePage_30; //$NON-NLS-1$
	addCheckBox(appearanceComposite, label, CommonEditorPreferenceNames.EVALUATE_TEMPORARY_PROBLEMS, 0);

	PreferenceLinkArea contentTypeArea = new PreferenceLinkArea(appearanceComposite, SWT.NONE, "ValidationPreferencePage", SSEUIMessages.StructuredTextEditorPreferencePage_40, (IWorkbenchPreferenceContainer) getContainer(), null); //$NON-NLS-1$

	GridData data = new GridData(GridData.FILL_HORIZONTAL \| GridData.GRAB_HORIZONTAL);
	data.horizontalIndent = 20;
	contentTypeArea.getControl().setLayoutData(data);

	label = SSEUIMessages.StructuredTextEditorPreferencePage_39;
	addCheckBox(appearanceComposite, label, EditorPreferenceNames.SHOW_UNKNOWN_CONTENT_TYPE_MSG, 0);

	label = SSEUIMessages.StructuredTextEditorPreferencePage_3;
	addCheckBox(appearanceComposite, label, IStructuredTextFoldingProvider.FOLDING_ENABLED, 0);

	Label l = new Label(appearanceComposite, SWT.LEFT);
	GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
	gd.horizontalSpan = 2;
	gd.heightHint = convertHeightInCharsToPixels(1) / 2;
	l.setLayoutData(gd);

	l = new Label(appearanceComposite, SWT.LEFT);
	l.setText(SSEUIMessages.StructuredTextEditorPreferencePage_23); //$NON-NLS-1$
	gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
	gd.horizontalSpan = 2;
	l.setLayoutData(gd);

	Composite editorComposite = new Composite(appearanceComposite, SWT.NONE);
	layout = new GridLayout();
	layout.numColumns = 2;
	layout.marginHeight = 0;
	layout.marginWidth = 0;
	editorComposite.setLayout(layout);
	gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL \| GridData.FILL_VERTICAL);
	gd.horizontalSpan = 2;
	editorComposite.setLayoutData(gd);

	fAppearanceColorList = new List(editorComposite, SWT.SINGLE \| SWT.V_SCROLL \| SWT.BORDER);
	gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING \| GridData.FILL_HORIZONTAL);
	gd.heightHint = convertHeightInCharsToPixels(5);
	fAppearanceColorList.setLayoutData(gd);

	Composite stylesComposite = new Composite(editorComposite, SWT.NONE);
	layout = new GridLayout();
	layout.marginHeight = 0;
	layout.marginWidth = 0;
	layout.numColumns = 2;
	stylesComposite.setLayout(layout);
	stylesComposite.setLayoutData(new GridData(GridData.FILL_BOTH));

	l = new Label(stylesComposite, SWT.LEFT);
	// needs to be made final so label can be set in
	// foregroundcolorbutton's acc listener
	final String buttonLabel = SSEUIMessages.StructuredTextEditorPreferencePage_24; //$NON-NLS-1$
	l.setText(buttonLabel);
	gd = new GridData();
	gd.horizontalAlignment = GridData.BEGINNING;
	l.setLayoutData(gd);

	fAppearanceColorEditor = new ColorEditor(stylesComposite);
	Button foregroundColorButton = fAppearanceColorEditor.getButton();
	gd = new GridData(GridData.FILL_HORIZONTAL);
	gd.horizontalAlignment = GridData.BEGINNING;
	foregroundColorButton.setLayoutData(gd);

	fAppearanceColorList.addSelectionListener(new SelectionListener() {
	public void widgetDefaultSelected(SelectionEvent e) {
	// do nothing
	}

	public void widgetSelected(SelectionEvent e) {
	handleAppearanceColorListSelection();
	}
	});
	foregroundColorButton.addSelectionListener(new SelectionListener() {
	public void widgetDefaultSelected(SelectionEvent e) {
	// do nothing
	}

	public void widgetSelected(SelectionEvent e) {
	int i = fAppearanceColorList.getSelectionIndex();
	String key = fAppearanceColorListModel[i][1];

	PreferenceConverter.setValue(fOverlayStore, key, fAppearanceColorEditor.getColorValue());
	}
	});

	// bug2541 - associate color label to button's label field
	foregroundColorButton.getAccessible().addAccessibleListener(new AccessibleAdapter() {
	public void getName(AccessibleEvent e) {
	if (e.childID == ACC.CHILDID_SELF)
	e.result = buttonLabel;
	}
	});

	PlatformUI.getWorkbench().getHelpSystem().setHelp(appearanceComposite, IHelpContextIds.PREFSTE_APPEARANCE_HELPID);
	return appearanceComposite;
	}

	/*
	* @see PreferencePage#createContents(Composite)
	*/
	protected Control createContents(Composite parent) {
	// need to create tabs before loading/starting overlaystore in case
	// tabs also add values
	IPreferenceTab hoversTab = new TextHoverPreferenceTab(this, fOverlayStore);

	fOverlayStore.load();
	fOverlayStore.start();

	TabFolder folder = new TabFolder(parent, SWT.NONE);
	folder.setLayout(new TabFolderLayout());
	folder.setLayoutData(new GridData(GridData.FILL_BOTH));

	TabItem item = new TabItem(folder, SWT.NONE);
	item.setText(SSEUIMessages.StructuredTextEditorPreferencePage_0); //$NON-NLS-1$
	item.setControl(createAppearancePage(folder));

	item = new TabItem(folder, SWT.NONE);
	item.setText(hoversTab.getTitle());
	item.setControl(hoversTab.createContents(folder));

	fTabs = new IPreferenceTab[]{hoversTab};

	initialize();

	Dialog.applyDialogFont(folder);
	return folder;
	}

	/*
	* @see PreferencePage#createControl(Composite)
	*/
	public void createControl(Composite parent) {
	super.createControl(parent);
	// WorkbenchHelp.setHelp(getControl(),
	// IJavaHelpContextIds.JAVA_EDITOR_PREFERENCE_PAGE);
	}

	private OverlayPreferenceStore.OverlayKey[] createOverlayStoreKeys() {
	ArrayList overlayKeys = new ArrayList();

	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, EditorPreferenceNames.MATCHING_BRACKETS_COLOR));
	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, EditorPreferenceNames.MATCHING_BRACKETS));

	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, CommonEditorPreferenceNames.EVALUATE_TEMPORARY_PROBLEMS));
	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, EditorPreferenceNames.SHOW_UNKNOWN_CONTENT_TYPE_MSG));

	overlayKeys.add(new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, IStructuredTextFoldingProvider.FOLDING_ENABLED));

	OverlayPreferenceStore.OverlayKey[] keys = new OverlayPreferenceStore.OverlayKey[overlayKeys.size()];
	overlayKeys.toArray(keys);
	return keys;
	}

	/*
	* @see DialogPage#dispose()
	*/
	public void dispose() {
	if (fOverlayStore != null) {
	fOverlayStore.stop();
	fOverlayStore = null;
	}

	super.dispose();
	}

	private void handleAppearanceColorListSelection() {
	int i = fAppearanceColorList.getSelectionIndex();
	String key = fAppearanceColorListModel[i][1];
	RGB rgb = PreferenceConverter.getColor(fOverlayStore, key);
	fAppearanceColorEditor.setColorValue(rgb);
	}

	/*
	* @see IWorkbenchPreferencePage#init()
	*/
	public void init(IWorkbench workbench) {
	// nothing to do
	}

	private void initialize() {
	initializeFields();

	for (int i = 0; i < fAppearanceColorListModel.length; i++)
	fAppearanceColorList.add(fAppearanceColorListModel[i][0]);
	fAppearanceColorList.getDisplay().asyncExec(new Runnable() {
	public void run() {
	if (fAppearanceColorList != null && !fAppearanceColorList.isDisposed()) {
	fAppearanceColorList.select(0);
	handleAppearanceColorListSelection();
	}
	}
	});
	}

	private void initializeFields() {
	Iterator e = fColorButtons.keySet().iterator();
	while (e.hasNext()) {
	ColorEditor c = (ColorEditor) e.next();
	String key = (String) fColorButtons.get(c);
	RGB rgb = PreferenceConverter.getColor(fOverlayStore, key);
	c.setColorValue(rgb);
	}

	e = fCheckBoxes.keySet().iterator();
	while (e.hasNext()) {
	Button b = (Button) e.next();
	String key = (String) fCheckBoxes.get(b);
	b.setSelection(fOverlayStore.getBoolean(key));
	}

	e = fTextFields.keySet().iterator();
	while (e.hasNext()) {
	Text t = (Text) e.next();
	String key = (String) fTextFields.get(t);
	t.setText(fOverlayStore.getString(key));
	}
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.jface.preference.PreferencePage#performApply()
	*/
	protected void performApply() {
	for (int i = 0; i < fTabs.length; i++) {
	fTabs[i].performApply();
	}
	super.performApply();
	}

	/*
	* @see PreferencePage#performDefaults()
	*/
	protected void performDefaults() {
	fOverlayStore.loadDefaults();

	initializeFields();

	handleAppearanceColorListSelection();

	for (int i = 0; i < fTabs.length; i++) {
	fTabs[i].performDefaults();
	}

	super.performDefaults();

	// there is currently no need for a viewer
	// fPreviewViewer.invalidateTextPresentation();
	}

	/*
	* @see PreferencePage#performOk()
	*/
	public boolean performOk() {
	for (int i = 0; i < fTabs.length; i++) {
	fTabs[i].performOk();
	}

	fOverlayStore.propagate();
	SSEUIPlugin.getDefault().savePluginPreferences();

	// tab width is also a model-side preference so need to set it
	// TODO need to handle tab width for formatter somehow
	// int tabWidth =
	// getPreferenceStore().getInt(AbstractDecoratedTextEditorPreferenceConstants.EDITOR_TAB_WIDTH);
	// ModelPlugin.getDefault().getPluginPreferences().setValue(CommonModelPreferenceNames.TAB_WIDTH,
	// tabWidth);
	// ModelPlugin.getDefault().savePluginPreferences();

	return true;
	}

	void updateStatus(IStatus status) {
	if (!status.matches(IStatus.ERROR)) {
	for (int i = 0; i < fNumberFields.size(); i++) {
	Text text = (Text) fNumberFields.get(i);
	IStatus s = validatePositiveNumber(text.getText());
	status = s.getSeverity() > status.getSeverity() ? s : status;
	}
	}

	setValid(!status.matches(IStatus.ERROR));
	applyToStatusLine(this, status);
	}

	private IStatus validatePositiveNumber(String number) {
	StatusInfo status = new StatusInfo();
	if (number.length() == 0) {
	status.setError(SSEUIMessages.StructuredTextEditorPreferencePage_37);
	}
	else {
	try {
	int value = Integer.parseInt(number);
	if (value < 0)
	status.setError(number + SSEUIMessages.StructuredTextEditorPreferencePage_38);
	}
	catch (NumberFormatException e) {
	status.setError(number + SSEUIMessages.StructuredTextEditorPreferencePage_38);
	}
	}
	return status;
	}
	}