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

 /*******************************************************************************
  * Copyright (c) 2001, 2010 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
  *
  *******************************************************************************/
 package org.eclipse.wst.sse.ui.internal.preferences.ui;

 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Locale;

 import org.eclipse.core.runtime.Platform;
 import org.eclipse.core.runtime.content.IContentType;
 import org.eclipse.core.runtime.content.IContentTypeManager;
 import org.eclipse.core.runtime.preferences.IEclipsePreferences;
 import org.eclipse.core.runtime.preferences.IPreferencesService;
 import org.eclipse.core.runtime.preferences.IScopeContext;
 import org.eclipse.jface.viewers.CheckboxTreeViewer;
 import org.eclipse.jface.viewers.ISelectionChangedListener;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.ITreeContentProvider;
 import org.eclipse.jface.viewers.LabelProvider;
 import org.eclipse.jface.viewers.SelectionChangedEvent;
 import org.eclipse.jface.viewers.TreeViewer;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.SashForm;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 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.wst.sse.core.internal.SSECorePlugin;
 import org.eclipse.wst.sse.core.internal.tasks.FileTaskScannerRegistryReader;
 import org.eclipse.wst.sse.core.internal.tasks.TaskTagPreferenceKeys;
 import org.eclipse.wst.sse.core.utils.StringUtils;
 import org.eclipse.wst.sse.ui.internal.SSEUIMessages;
 import org.eclipse.wst.sse.ui.internal.util.Sorter;

 import com.ibm.icu.text.Collator;

 class ExclusionsTab implements IPreferenceTab {
 	private class ArrayTreeContentProvider implements ITreeContentProvider {
 		public ArrayTreeContentProvider() {
 			super();
 		}

 		public void dispose() {
 		}

 		public Object[] getChildren(Object parentElement) {
 			if (parentElement instanceof Object[])
 				return fContentTypeSorter.sort((Object[]) parentElement);
 			return new Object[0];
 		}

 		public Object[] getElements(Object inputElement) {
 			return getChildren(inputElement);
 		}

 		public Object getParent(Object element) {
 			return null;
 		}

 		public boolean hasChildren(Object element) {
 			return getChildren(element).length > 0;
 		}

 		public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 		}
 	}

 	private class ContentTypeLabelProvider extends LabelProvider {
 		public String getText(Object element) {
 			if (element != null) {
 				Object o = element;
 				if (o instanceof String) {
 					o = fContentTypeManager.getContentType(o.toString());
 				}
 				if (o instanceof IContentType) {
 					return ((IContentType) o).getName();
 				}
 			}
 			return super.getText(element);
 		}
 	}

 	/**
 	 * A QuickSorter that sorts and returns a IContentType-typed array
 	 */
 	private class ContentTypeSorter extends Sorter {
 		private Collator collator = Collator.getInstance(Locale.ENGLISH);

 		public boolean compare(Object elementOne, Object elementTwo) {
 			return (collator.compare(((IContentType) elementOne).getName(), ((IContentType) elementTwo).getName())) < 0;
 		}

 		public Object[] sort(Object[] unSortedCollection) {
 			Object[] types = super.sort(unSortedCollection);
 			IContentType[] sortedTypes = new IContentType[types.length];
 			if (types.length > 0) {
 				System.arraycopy(types, 0, sortedTypes, 0, sortedTypes.length);
 			}
 			return sortedTypes;
 		}
 	}

 	private class ContentTypeTreeProvider implements ITreeContentProvider {
 		public ContentTypeTreeProvider() {
 			super();
 		}

 		public void dispose() {
 		}

 		boolean equals(Object left, Object right) {
 			return left == null ? right == null : ((right != null) && left.equals(right));
 		}

 		public Object[] getChildren(Object parentElement) {
 			if (parentElement instanceof Object[]) {
 				return (Object[]) parentElement;
 			}
 			if (parentElement instanceof IContentType) {
 				List elements = new ArrayList(0);
 				IContentType[] allTypes = fContentTypeManager.getAllContentTypes();
 				for (int i = 0; i < allTypes.length; i++) {
 					if (!fSupportedContentTypes.contains(allTypes[i]) && equals(allTypes[i].getBaseType(), parentElement)) {
 						elements.add(allTypes[i]);
 					}
 				}
 				return fContentTypeSorter.sort(elements.toArray());
 			}
 			return new Object[0];
 		}

 		public Object[] getElements(Object inputElement) {
 			return getChildren(inputElement);
 		}

 		public Object getParent(Object element) {
 			Object parent = null;
 			if (element instanceof IContentType) {
 				parent = ((IContentType) element).getBaseType();
 			}
 			return parent;
 		}

 		public boolean hasChildren(Object element) {
 			return getChildren(element).length > 0;
 		}

 		public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 		}
 	}

 	/**
 	 * A QuickSorter that sorts and returns a String-typed array
 	 */
 	private class StringSorter extends Sorter {
 		Collator collator = Collator.getInstance(Locale.ENGLISH);

 		public boolean compare(Object elementOne, Object elementTwo) {
 			return (collator.compare(elementOne.toString(), elementTwo.toString()) < 0);
 		}

 		public Object[] sort(Object[] unSortedCollection) {
 			Object[] sortedCollection = super.sort(unSortedCollection);
 			String[] strings = new String[sortedCollection.length];
 			// copy the array so can return a new sorted collection
 			if (strings.length > 0) {
 				System.arraycopy(sortedCollection, 0, strings, 0, strings.length);
 			}
 			return strings;
 		}
 	}

 	private static final boolean _debugPreferences = "true".equalsIgnoreCase(Platform.getDebugOption("org.eclipse.wst.sse.core/tasks/preferences")); //$NON-NLS-1$ //$NON-NLS-2$

 	private CheckboxTreeViewer fContentTypeList;

 	private IContentTypeManager fContentTypeManager = null;

 	ContentTypeSorter fContentTypeSorter = new ContentTypeSorter();

 	private IContentType[] fIgnoreContentTypes = null;

 	private IContentType[] fOriginalIgnoreContentTypes = null;

 	private TaskTagPreferencePage fOwner = null;

 	private IScopeContext[] fPreferencesLookupOrder = null;

 	private IPreferencesService fPreferencesService = null;

 	private List fSupportedContentTypes = null;

 	public ExclusionsTab(TaskTagPreferencePage parent, IPreferencesService preferencesService, IScopeContext[] lookupOrder) {
 		super();
 		fOwner = parent;
 		fPreferencesLookupOrder = lookupOrder;
 		fPreferencesService = preferencesService;
 		fContentTypeManager = Platform.getContentTypeManager();

 		String[] supportedContentTypeIDs = FileTaskScannerRegistryReader.getInstance().getSupportedContentTypeIds();
 		fSupportedContentTypes = new ArrayList(supportedContentTypeIDs.length);
 		for (int i = 0; i < supportedContentTypeIDs.length; i++) {
 			IContentType type = fContentTypeManager.getContentType(supportedContentTypeIDs[i]);
 			if (type != null) {
 				fSupportedContentTypes.add(type);
 			}
 		}
 		String[] ignoreContentTypes = StringUtils.unpack(fPreferencesService.getString(TaskTagPreferenceKeys.TASK_TAG_NODE, TaskTagPreferenceKeys.TASK_TAG_CONTENTTYPES_IGNORED, SSECorePlugin.getDefault().getPluginPreferences().getDefaultString(TaskTagPreferenceKeys.TASK_TAG_CONTENTTYPES_IGNORED), fPreferencesLookupOrder));
 		List contentTypes = new ArrayList();
 		for (int i = 0; i < ignoreContentTypes.length; i++) {
 			IContentType type = fContentTypeManager.getContentType(ignoreContentTypes[i]);
 			if (type != null) {
 				contentTypes.add(type);
 			}
 		}
 		fOriginalIgnoreContentTypes = fIgnoreContentTypes = (IContentType[]) contentTypes.toArray(new IContentType[contentTypes.size()]);
 	}

 	public Control createContents(Composite tabFolder) {
 		SashForm sash = new SashForm(tabFolder, SWT.VERTICAL);
 		Composite composite = new Composite(sash, SWT.NONE);
 		composite.setLayout(new GridLayout(2, true));
 		Label description = new Label(composite, SWT.NONE);
 		description.setText(SSEUIMessages.TaskTagExclusionTab_02);
 //		description.setBackground(composite.getBackground());

 		fContentTypeList = new CheckboxTreeViewer(composite, SWT.SINGLE | SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER);
 		fContentTypeList.setLabelProvider(new ContentTypeLabelProvider());
 		fContentTypeList.setContentProvider(new ArrayTreeContentProvider());

 		fContentTypeList.setInput(fSupportedContentTypes.toArray());
 		fContentTypeList.setCheckedElements(fSupportedContentTypes.toArray());
 		fContentTypeList.getTree().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 2, 1));
 		for (int i = 0; i < fIgnoreContentTypes.length; i++) {
 			fContentTypeList.setChecked(fIgnoreContentTypes[i], false);
 		}

 		Button selectAll = new Button(composite, SWT.PUSH);
 		selectAll.setText(SSEUIMessages.TaskTagPreferenceTab_17);
 		selectAll.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, false, 1, 1));
 		selectAll.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				fContentTypeList.setCheckedElements(fSupportedContentTypes.toArray());
 			}
 		});

 		Button selectNone = new Button(composite, SWT.PUSH);
 		selectNone.setText(SSEUIMessages.TaskTagPreferenceTab_18);
 		selectNone.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, false, 1, 1));
 		selectNone.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				fContentTypeList.setCheckedElements(new Object[0]);
 			}
 		});

 		composite = new Composite(sash, SWT.NONE);
 		composite.setLayout(new GridLayout(2, true));
 		new Label(composite, SWT.NONE).setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 2, 1));

 		Label affectedTypesLabel = new Label(composite, SWT.NONE);
 		affectedTypesLabel.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 2, 1));
 //		affectedTypesLabel.setBackground(composite.getBackground());
 		affectedTypesLabel.setText(SSEUIMessages.TaskTagExclusionTab_03);

 		final TreeViewer contentTypeTreeViewer = new TreeViewer(composite, SWT.SINGLE | SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER);
 		contentTypeTreeViewer.setLabelProvider(new ContentTypeLabelProvider());
 		contentTypeTreeViewer.setContentProvider(new ContentTypeTreeProvider());
 		contentTypeTreeViewer.setInput(new Object[0]);
 		contentTypeTreeViewer.getTree().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 2, 1));

 		fContentTypeList.addSelectionChangedListener(new ISelectionChangedListener() {
 			public void selectionChanged(SelectionChangedEvent event) {
 				if (event.getSelection() instanceof IStructuredSelection) {
 					Object[] o = ((IStructuredSelection) event.getSelection()).toArray();
 					contentTypeTreeViewer.setInput(o);
 					contentTypeTreeViewer.expandAll();
 					if (o.length > 0) {
 						contentTypeTreeViewer.reveal(o[0]);
 					}
 				}
 			}
 		});

 		return sash;
 	}

 	public String getTitle() {
 		return SSEUIMessages.TaskTagExclusionTab_01;
 	}

 	public void performApply() {
 		save();
 	}

 	public void performDefaults() {
 		if (_debugPreferences) {
 			System.out.println("Loading defaults in " + getClass().getName()); //$NON-NLS-1$
 		}
 		IEclipsePreferences[] defaultPreferences = new IEclipsePreferences[fPreferencesLookupOrder.length - 1];
 		for (int i = 1; i < defaultPreferences.length; i++) {
 			defaultPreferences[i - 1] = fPreferencesLookupOrder[i].getNode(TaskTagPreferenceKeys.TASK_TAG_NODE);
 		}
 		String[] defaultIgnoreTypes = StringUtils.unpack(fPreferencesService.get(TaskTagPreferenceKeys.TASK_TAG_CONTENTTYPES_IGNORED, null, defaultPreferences)); //$NON-NLS-1$

 		List contentTypes = new ArrayList();
 		for (int i = 0; i < defaultIgnoreTypes.length; i++) {
 			IContentType type = fContentTypeManager.getContentType(defaultIgnoreTypes[i]);
 			if (type != null) {
 				contentTypes.add(type);
 			}
 		}
 		fIgnoreContentTypes = (IContentType[]) contentTypes.toArray(new IContentType[contentTypes.size()]);
 		fContentTypeList.setCheckedElements(fContentTypeManager.getAllContentTypes());
 		for (int i = 0; i < fIgnoreContentTypes.length; i++) {
 			fContentTypeList.setChecked(fIgnoreContentTypes[i], false);
 		}
 	}

 	public void performOk() {
 		List ignoredIds = save();
 		String[] ignoreIDs = (String[]) new StringSorter().sort(ignoredIds.toArray());
 		fIgnoreContentTypes = new IContentType[ignoreIDs.length];
 		for (int i = 0; i < ignoreIDs.length; i++) {
 			fIgnoreContentTypes[i] = fContentTypeManager.getContentType(ignoreIDs[i]);
 		}

 		if (!Arrays.equals(fOriginalIgnoreContentTypes, fIgnoreContentTypes)) {
 			fOwner.requestRedetection();
 		}
 		fOriginalIgnoreContentTypes = fIgnoreContentTypes;
 	}

 	private List save() {
 		List ignoredIds = new ArrayList();
 		List checked = Arrays.asList(fContentTypeList.getCheckedElements());
 		for (int i = 0; i < fSupportedContentTypes.size(); i++) {
 			if (!checked.contains(fSupportedContentTypes.get(i))) {
 				ignoredIds.add(((IContentType) fSupportedContentTypes.get(i)).getId());
 			}
 		}
 		IEclipsePreferences[] defaultPreferences = new IEclipsePreferences[fPreferencesLookupOrder.length - 1];
 		for (int i = 1; i < defaultPreferences.length; i++) {
 			defaultPreferences[i - 1] = fPreferencesLookupOrder[i].getNode(TaskTagPreferenceKeys.TASK_TAG_NODE);
 		}

 		String defaultIgnoredContentTypeIds = StringUtils.pack((String[]) new StringSorter().sort(StringUtils.unpack(fPreferencesService.get(TaskTagPreferenceKeys.TASK_TAG_CONTENTTYPES_IGNORED, "", defaultPreferences)))); //$NON-NLS-1$
 		String ignoredContentTypeIds = StringUtils.pack((String[]) new StringSorter().sort(ignoredIds.toArray()));
 		if (ignoredContentTypeIds.equals(defaultIgnoredContentTypeIds)) {
 			if (_debugPreferences) {
 				System.out.println(getClass().getName() + " removing " + TaskTagPreferenceKeys.TASK_TAG_CONTENTTYPES_IGNORED + " from scope " + fPreferencesLookupOrder[0].getName() + ":" + fPreferencesLookupOrder[0].getLocation()); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
 			}
 			fPreferencesLookupOrder[0].getNode(TaskTagPreferenceKeys.TASK_TAG_NODE).remove(TaskTagPreferenceKeys.TASK_TAG_CONTENTTYPES_IGNORED);
 		}
 		else {
 			if (_debugPreferences) {
 				System.out.println(getClass().getName() + " setting " + TaskTagPreferenceKeys.TASK_TAG_CONTENTTYPES_IGNORED + " \"" + ignoredContentTypeIds + "\" in scope " + fPreferencesLookupOrder[0].getName() + ":" + fPreferencesLookupOrder[0].getLocation()); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
 			}
 			fPreferencesLookupOrder[0].getNode(TaskTagPreferenceKeys.TASK_TAG_NODE).put(TaskTagPreferenceKeys.TASK_TAG_CONTENTTYPES_IGNORED, ignoredContentTypeIds);
 		}
 		return ignoredIds;
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2001, 2010 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
	*
	*******************************************************************************/
	package org.eclipse.wst.sse.ui.internal.preferences.ui;

	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.List;
	import java.util.Locale;

	import org.eclipse.core.runtime.Platform;
	import org.eclipse.core.runtime.content.IContentType;
	import org.eclipse.core.runtime.content.IContentTypeManager;
	import org.eclipse.core.runtime.preferences.IEclipsePreferences;
	import org.eclipse.core.runtime.preferences.IPreferencesService;
	import org.eclipse.core.runtime.preferences.IScopeContext;
	import org.eclipse.jface.viewers.CheckboxTreeViewer;
	import org.eclipse.jface.viewers.ISelectionChangedListener;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.ITreeContentProvider;
	import org.eclipse.jface.viewers.LabelProvider;
	import org.eclipse.jface.viewers.SelectionChangedEvent;
	import org.eclipse.jface.viewers.TreeViewer;
	import org.eclipse.jface.viewers.Viewer;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.SashForm;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	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.wst.sse.core.internal.SSECorePlugin;
	import org.eclipse.wst.sse.core.internal.tasks.FileTaskScannerRegistryReader;
	import org.eclipse.wst.sse.core.internal.tasks.TaskTagPreferenceKeys;
	import org.eclipse.wst.sse.core.utils.StringUtils;
	import org.eclipse.wst.sse.ui.internal.SSEUIMessages;
	import org.eclipse.wst.sse.ui.internal.util.Sorter;

	import com.ibm.icu.text.Collator;

	class ExclusionsTab implements IPreferenceTab {
	private class ArrayTreeContentProvider implements ITreeContentProvider {
	public ArrayTreeContentProvider() {
	super();
	}

	public void dispose() {
	}

	public Object[] getChildren(Object parentElement) {
	if (parentElement instanceof Object[])
	return fContentTypeSorter.sort((Object[]) parentElement);
	return new Object[0];
	}

	public Object[] getElements(Object inputElement) {
	return getChildren(inputElement);
	}

	public Object getParent(Object element) {
	return null;
	}

	public boolean hasChildren(Object element) {
	return getChildren(element).length > 0;
	}

	public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
	}
	}

	private class ContentTypeLabelProvider extends LabelProvider {
	public String getText(Object element) {
	if (element != null) {
	Object o = element;
	if (o instanceof String) {
	o = fContentTypeManager.getContentType(o.toString());
	}
	if (o instanceof IContentType) {
	return ((IContentType) o).getName();
	}
	}
	return super.getText(element);
	}
	}

	/**
	* A QuickSorter that sorts and returns a IContentType-typed array
	*/
	private class ContentTypeSorter extends Sorter {
	private Collator collator = Collator.getInstance(Locale.ENGLISH);

	public boolean compare(Object elementOne, Object elementTwo) {
	return (collator.compare(((IContentType) elementOne).getName(), ((IContentType) elementTwo).getName())) < 0;
	}

	public Object[] sort(Object[] unSortedCollection) {
	Object[] types = super.sort(unSortedCollection);
	IContentType[] sortedTypes = new IContentType[types.length];
	if (types.length > 0) {
	System.arraycopy(types, 0, sortedTypes, 0, sortedTypes.length);
	}
	return sortedTypes;
	}
	}

	private class ContentTypeTreeProvider implements ITreeContentProvider {
	public ContentTypeTreeProvider() {
	super();
	}

	public void dispose() {
	}

	boolean equals(Object left, Object right) {
	return left == null ? right == null : ((right != null) && left.equals(right));
	}

	public Object[] getChildren(Object parentElement) {
	if (parentElement instanceof Object[]) {
	return (Object[]) parentElement;
	}
	if (parentElement instanceof IContentType) {
	List elements = new ArrayList(0);
	IContentType[] allTypes = fContentTypeManager.getAllContentTypes();
	for (int i = 0; i < allTypes.length; i++) {
	if (!fSupportedContentTypes.contains(allTypes[i]) && equals(allTypes[i].getBaseType(), parentElement)) {
	elements.add(allTypes[i]);
	}
	}
	return fContentTypeSorter.sort(elements.toArray());
	}
	return new Object[0];
	}

	public Object[] getElements(Object inputElement) {
	return getChildren(inputElement);
	}

	public Object getParent(Object element) {
	Object parent = null;
	if (element instanceof IContentType) {
	parent = ((IContentType) element).getBaseType();
	}
	return parent;
	}

	public boolean hasChildren(Object element) {
	return getChildren(element).length > 0;
	}

	public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
	}
	}

	/**
	* A QuickSorter that sorts and returns a String-typed array
	*/
	private class StringSorter extends Sorter {
	Collator collator = Collator.getInstance(Locale.ENGLISH);

	public boolean compare(Object elementOne, Object elementTwo) {
	return (collator.compare(elementOne.toString(), elementTwo.toString()) < 0);
	}

	public Object[] sort(Object[] unSortedCollection) {
	Object[] sortedCollection = super.sort(unSortedCollection);
	String[] strings = new String[sortedCollection.length];
	// copy the array so can return a new sorted collection
	if (strings.length > 0) {
	System.arraycopy(sortedCollection, 0, strings, 0, strings.length);
	}
	return strings;
	}
	}

	private static final boolean _debugPreferences = "true".equalsIgnoreCase(Platform.getDebugOption("org.eclipse.wst.sse.core/tasks/preferences")); //$NON-NLS-1$ //$NON-NLS-2$

	private CheckboxTreeViewer fContentTypeList;

	private IContentTypeManager fContentTypeManager = null;

	ContentTypeSorter fContentTypeSorter = new ContentTypeSorter();

	private IContentType[] fIgnoreContentTypes = null;

	private IContentType[] fOriginalIgnoreContentTypes = null;

	private TaskTagPreferencePage fOwner = null;

	private IScopeContext[] fPreferencesLookupOrder = null;

	private IPreferencesService fPreferencesService = null;

	private List fSupportedContentTypes = null;

	public ExclusionsTab(TaskTagPreferencePage parent, IPreferencesService preferencesService, IScopeContext[] lookupOrder) {
	super();
	fOwner = parent;
	fPreferencesLookupOrder = lookupOrder;
	fPreferencesService = preferencesService;
	fContentTypeManager = Platform.getContentTypeManager();

	String[] supportedContentTypeIDs = FileTaskScannerRegistryReader.getInstance().getSupportedContentTypeIds();
	fSupportedContentTypes = new ArrayList(supportedContentTypeIDs.length);
	for (int i = 0; i < supportedContentTypeIDs.length; i++) {
	IContentType type = fContentTypeManager.getContentType(supportedContentTypeIDs[i]);
	if (type != null) {
	fSupportedContentTypes.add(type);
	}
	}
	String[] ignoreContentTypes = StringUtils.unpack(fPreferencesService.getString(TaskTagPreferenceKeys.TASK_TAG_NODE, TaskTagPreferenceKeys.TASK_TAG_CONTENTTYPES_IGNORED, SSECorePlugin.getDefault().getPluginPreferences().getDefaultString(TaskTagPreferenceKeys.TASK_TAG_CONTENTTYPES_IGNORED), fPreferencesLookupOrder));
	List contentTypes = new ArrayList();
	for (int i = 0; i < ignoreContentTypes.length; i++) {
	IContentType type = fContentTypeManager.getContentType(ignoreContentTypes[i]);
	if (type != null) {
	contentTypes.add(type);
	}
	}
	fOriginalIgnoreContentTypes = fIgnoreContentTypes = (IContentType[]) contentTypes.toArray(new IContentType[contentTypes.size()]);
	}

	public Control createContents(Composite tabFolder) {
	SashForm sash = new SashForm(tabFolder, SWT.VERTICAL);
	Composite composite = new Composite(sash, SWT.NONE);
	composite.setLayout(new GridLayout(2, true));
	Label description = new Label(composite, SWT.NONE);
	description.setText(SSEUIMessages.TaskTagExclusionTab_02);
	// description.setBackground(composite.getBackground());

	fContentTypeList = new CheckboxTreeViewer(composite, SWT.SINGLE \| SWT.H_SCROLL \| SWT.V_SCROLL \| SWT.BORDER);
	fContentTypeList.setLabelProvider(new ContentTypeLabelProvider());
	fContentTypeList.setContentProvider(new ArrayTreeContentProvider());

	fContentTypeList.setInput(fSupportedContentTypes.toArray());
	fContentTypeList.setCheckedElements(fSupportedContentTypes.toArray());
	fContentTypeList.getTree().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 2, 1));
	for (int i = 0; i < fIgnoreContentTypes.length; i++) {
	fContentTypeList.setChecked(fIgnoreContentTypes[i], false);
	}

	Button selectAll = new Button(composite, SWT.PUSH);
	selectAll.setText(SSEUIMessages.TaskTagPreferenceTab_17);
	selectAll.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, false, 1, 1));
	selectAll.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	fContentTypeList.setCheckedElements(fSupportedContentTypes.toArray());
	}
	});

	Button selectNone = new Button(composite, SWT.PUSH);
	selectNone.setText(SSEUIMessages.TaskTagPreferenceTab_18);
	selectNone.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, false, 1, 1));
	selectNone.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	fContentTypeList.setCheckedElements(new Object[0]);
	}
	});

	composite = new Composite(sash, SWT.NONE);
	composite.setLayout(new GridLayout(2, true));
	new Label(composite, SWT.NONE).setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 2, 1));

	Label affectedTypesLabel = new Label(composite, SWT.NONE);
	affectedTypesLabel.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 2, 1));
	// affectedTypesLabel.setBackground(composite.getBackground());
	affectedTypesLabel.setText(SSEUIMessages.TaskTagExclusionTab_03);

	final TreeViewer contentTypeTreeViewer = new TreeViewer(composite, SWT.SINGLE \| SWT.H_SCROLL \| SWT.V_SCROLL \| SWT.BORDER);
	contentTypeTreeViewer.setLabelProvider(new ContentTypeLabelProvider());
	contentTypeTreeViewer.setContentProvider(new ContentTypeTreeProvider());
	contentTypeTreeViewer.setInput(new Object[0]);
	contentTypeTreeViewer.getTree().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 2, 1));

	fContentTypeList.addSelectionChangedListener(new ISelectionChangedListener() {
	public void selectionChanged(SelectionChangedEvent event) {
	if (event.getSelection() instanceof IStructuredSelection) {
	Object[] o = ((IStructuredSelection) event.getSelection()).toArray();
	contentTypeTreeViewer.setInput(o);
	contentTypeTreeViewer.expandAll();
	if (o.length > 0) {
	contentTypeTreeViewer.reveal(o[0]);
	}
	}
	}
	});

	return sash;
	}

	public String getTitle() {
	return SSEUIMessages.TaskTagExclusionTab_01;
	}

	public void performApply() {
	save();
	}

	public void performDefaults() {
	if (_debugPreferences) {
	System.out.println("Loading defaults in " + getClass().getName()); //$NON-NLS-1$
	}
	IEclipsePreferences[] defaultPreferences = new IEclipsePreferences[fPreferencesLookupOrder.length - 1];
	for (int i = 1; i < defaultPreferences.length; i++) {
	defaultPreferences[i - 1] = fPreferencesLookupOrder[i].getNode(TaskTagPreferenceKeys.TASK_TAG_NODE);
	}
	String[] defaultIgnoreTypes = StringUtils.unpack(fPreferencesService.get(TaskTagPreferenceKeys.TASK_TAG_CONTENTTYPES_IGNORED, null, defaultPreferences)); //$NON-NLS-1$

	List contentTypes = new ArrayList();
	for (int i = 0; i < defaultIgnoreTypes.length; i++) {
	IContentType type = fContentTypeManager.getContentType(defaultIgnoreTypes[i]);
	if (type != null) {
	contentTypes.add(type);
	}
	}
	fIgnoreContentTypes = (IContentType[]) contentTypes.toArray(new IContentType[contentTypes.size()]);
	fContentTypeList.setCheckedElements(fContentTypeManager.getAllContentTypes());
	for (int i = 0; i < fIgnoreContentTypes.length; i++) {
	fContentTypeList.setChecked(fIgnoreContentTypes[i], false);
	}
	}

	public void performOk() {
	List ignoredIds = save();
	String[] ignoreIDs = (String[]) new StringSorter().sort(ignoredIds.toArray());
	fIgnoreContentTypes = new IContentType[ignoreIDs.length];
	for (int i = 0; i < ignoreIDs.length; i++) {
	fIgnoreContentTypes[i] = fContentTypeManager.getContentType(ignoreIDs[i]);
	}

	if (!Arrays.equals(fOriginalIgnoreContentTypes, fIgnoreContentTypes)) {
	fOwner.requestRedetection();
	}
	fOriginalIgnoreContentTypes = fIgnoreContentTypes;
	}

	private List save() {
	List ignoredIds = new ArrayList();
	List checked = Arrays.asList(fContentTypeList.getCheckedElements());
	for (int i = 0; i < fSupportedContentTypes.size(); i++) {
	if (!checked.contains(fSupportedContentTypes.get(i))) {
	ignoredIds.add(((IContentType) fSupportedContentTypes.get(i)).getId());
	}
	}
	IEclipsePreferences[] defaultPreferences = new IEclipsePreferences[fPreferencesLookupOrder.length - 1];
	for (int i = 1; i < defaultPreferences.length; i++) {
	defaultPreferences[i - 1] = fPreferencesLookupOrder[i].getNode(TaskTagPreferenceKeys.TASK_TAG_NODE);
	}

	String defaultIgnoredContentTypeIds = StringUtils.pack((String[]) new StringSorter().sort(StringUtils.unpack(fPreferencesService.get(TaskTagPreferenceKeys.TASK_TAG_CONTENTTYPES_IGNORED, "", defaultPreferences)))); //$NON-NLS-1$
	String ignoredContentTypeIds = StringUtils.pack((String[]) new StringSorter().sort(ignoredIds.toArray()));
	if (ignoredContentTypeIds.equals(defaultIgnoredContentTypeIds)) {
	if (_debugPreferences) {
	System.out.println(getClass().getName() + " removing " + TaskTagPreferenceKeys.TASK_TAG_CONTENTTYPES_IGNORED + " from scope " + fPreferencesLookupOrder[0].getName() + ":" + fPreferencesLookupOrder[0].getLocation()); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
	}
	fPreferencesLookupOrder[0].getNode(TaskTagPreferenceKeys.TASK_TAG_NODE).remove(TaskTagPreferenceKeys.TASK_TAG_CONTENTTYPES_IGNORED);
	}
	else {
	if (_debugPreferences) {
	System.out.println(getClass().getName() + " setting " + TaskTagPreferenceKeys.TASK_TAG_CONTENTTYPES_IGNORED + " \"" + ignoredContentTypeIds + "\" in scope " + fPreferencesLookupOrder[0].getName() + ":" + fPreferencesLookupOrder[0].getLocation()); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
	}
	fPreferencesLookupOrder[0].getNode(TaskTagPreferenceKeys.TASK_TAG_NODE).put(TaskTagPreferenceKeys.TASK_TAG_CONTENTTYPES_IGNORED, ignoredContentTypeIds);
	}
	return ignoredIds;
	}
	}