org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/formatter/ProfileConfigurationBlock.java - jdt/eclipse.jdt.ui - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2016 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
  *******************************************************************************/
 package org.eclipse.jdt.internal.ui.preferences.formatter;

 import java.io.File;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Observable;
 import java.util.Observer;

 import org.osgi.service.prefs.BackingStoreException;

 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.Combo;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.FileDialog;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Shell;

 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.Platform;
 import org.eclipse.core.runtime.content.IContentType;
 import org.eclipse.core.runtime.preferences.DefaultScope;
 import org.eclipse.core.runtime.preferences.IEclipsePreferences.IPreferenceChangeListener;
 import org.eclipse.core.runtime.preferences.IEclipsePreferences.PreferenceChangeEvent;
 import org.eclipse.core.runtime.preferences.IScopeContext;

 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.ProjectScope;

 import org.eclipse.jface.dialogs.MessageDialog;
 import org.eclipse.jface.dialogs.StatusDialog;
 import org.eclipse.jface.layout.PixelConverter;
 import org.eclipse.jface.window.Window;

 import org.eclipse.jdt.core.JavaCore;

 import org.eclipse.jdt.internal.corext.util.Messages;

 import org.eclipse.jdt.ui.JavaUI;

 import org.eclipse.jdt.internal.ui.JavaPlugin;
 import org.eclipse.jdt.internal.ui.preferences.PreferencesAccess;
 import org.eclipse.jdt.internal.ui.preferences.PreferencesMessages;
 import org.eclipse.jdt.internal.ui.preferences.formatter.ProfileManager.CustomProfile;
 import org.eclipse.jdt.internal.ui.preferences.formatter.ProfileManager.Profile;
 import org.eclipse.jdt.internal.ui.util.ExceptionHandler;
 import org.eclipse.jdt.internal.ui.util.SWTUtil;
 import org.eclipse.jdt.internal.core.manipulation.util.BasicElementLabels;


 public abstract class ProfileConfigurationBlock {

 	private class StoreUpdater implements Observer {

 		public StoreUpdater() {
 			fProfileManager.addObserver(this);
 		}

 		@Override
 		public void update(Observable o, Object arg) {
 			try {
 				fPreferenceListenerEnabled= false;
     			final int value= ((Integer)arg).intValue();
     			switch (value) {
     			case ProfileManager.PROFILE_DELETED_EVENT:
     			case ProfileManager.PROFILE_RENAMED_EVENT:
     			case ProfileManager.PROFILE_CREATED_EVENT:
     			case ProfileManager.SETTINGS_CHANGED_EVENT:
     				try {
     					fProfileStore.writeProfiles(fProfileManager.getSortedProfiles(), fInstanceScope); // update profile store
     					fProfileManager.commitChanges(fCurrContext);
     				} catch (CoreException x) {
     					JavaPlugin.log(x);
     				}
     				break;
     			case ProfileManager.SELECTION_CHANGED_EVENT:
     				fProfileManager.commitChanges(fCurrContext);
     				break;
     			}
 			} finally {
 				fPreferenceListenerEnabled= true;
 			}
 		}
 	}

 	class ProfileComboController implements Observer, SelectionListener {

 		private final List<Profile> fSortedProfiles;

 		public ProfileComboController() {
 			fSortedProfiles= fProfileManager.getSortedProfiles();
 			fProfileCombo.addSelectionListener(this);
 			fProfileManager.addObserver(this);
 			updateProfiles();
 			updateSelection();
 		}

 		@Override
 		public void widgetSelected(SelectionEvent e) {
 			final int index= fProfileCombo.getSelectionIndex();
 			fProfileManager.setSelected(fSortedProfiles.get(index));
 		}

 		@Override
 		public void widgetDefaultSelected(SelectionEvent e) {}

 		@Override
 		public void update(Observable o, Object arg) {
 			if (arg == null) return;
 			final int value= ((Integer)arg).intValue();
 			switch (value) {
 			case ProfileManager.PROFILE_CREATED_EVENT:
 			case ProfileManager.PROFILE_DELETED_EVENT:
 			case ProfileManager.PROFILE_RENAMED_EVENT:
 				updateProfiles();
 				updateSelection();
 				break;
 			case ProfileManager.SELECTION_CHANGED_EVENT:
 				updateSelection();
 				break;
 			}
 		}

 		private void updateProfiles() {
 			fProfileCombo.setItems(fProfileManager.getSortedDisplayNames());
 		}

 		private void updateSelection() {
 			fProfileCombo.setText(fProfileManager.getSelected().getName());
 		}
 	}

 	class ButtonController implements Observer, SelectionListener {

 		public ButtonController() {
 			fProfileManager.addObserver(this);
 			fNewButton.addSelectionListener(this);
 			fEditButton.addSelectionListener(this);
 			fDeleteButton.addSelectionListener(this);
 			fLoadButton.addSelectionListener(this);
 			fExportAllButton.addSelectionListener(this);
 			update(fProfileManager, null);
 		}

 		@Override
 		public void update(Observable o, Object arg) {
 			Profile selected= ((ProfileManager)o).getSelected();
 			final boolean notBuiltIn= !selected.isBuiltInProfile();
 			fDeleteButton.setEnabled(notBuiltIn);
 		}

 		@Override
 		public void widgetSelected(SelectionEvent e) {
 			final Button button= (Button)e.widget;
 			if (button == fEditButton)
 				modifyButtonPressed();
 			else if (button == fDeleteButton)
 				deleteButtonPressed();
 			else if (button == fNewButton)
 				newButtonPressed();
 			else if (button == fLoadButton)
 				loadButtonPressed();
 			else if(button == fExportAllButton)
 				exportAllButtonPressed();
 		}

 		/**
 		 * Exports all the profiles to a file.
 		 *
 		 * @since 3.6
 		 */
 		private void exportAllButtonPressed() {
 			final FileDialog dialog= new FileDialog(fComposite.getShell(), SWT.SAVE | SWT.SHEET);
 			dialog.setText(FormatterMessages.CodingStyleConfigurationBlock_export_profiles_dialog_title);
 			dialog.setFilterExtensions(new String [] {"*.xml"}); //$NON-NLS-1$
 			final String lastPath= JavaPlugin.getDefault().getDialogSettings().get(fLastSaveLoadPathKey + ".loadpath"); //$NON-NLS-1$
 			if (lastPath != null) {
 				dialog.setFilterPath(lastPath);
 			}
 			final String path= dialog.open();
 			if (path == null)
 				return;

 			JavaPlugin.getDefault().getDialogSettings().put(fLastSaveLoadPathKey + ".savepath", dialog.getFilterPath()); //$NON-NLS-1$

 			final File file= new File(path);
 			if (file.exists() && !MessageDialog.openQuestion(fComposite.getShell(), FormatterMessages.CodingStyleConfigurationBlock_export_profiles_overwrite_title, Messages.format(FormatterMessages.CodingStyleConfigurationBlock_export_profiles_overwrite_message, BasicElementLabels.getPathLabel(file)))) {
 				return;
 			}
 			String encoding= ProfileStore.ENCODING;
 			final IContentType type= Platform.getContentTypeManager().getContentType("org.eclipse.core.runtime.xml"); //$NON-NLS-1$
 			if (type != null)
 				encoding= type.getDefaultCharset();
 			final Collection<Profile> profiles= new ArrayList<>();
 			profiles.addAll(fProfileManager.getSortedProfiles());
 			try {
 				fProfileStore.writeProfilesToFile(profiles, file, encoding);
 			} catch (CoreException e) {
 				final String title= FormatterMessages.CodingStyleConfigurationBlock_export_profiles_error_title;
 				final String message= FormatterMessages.CodingStyleConfigurationBlock_export_profiles_error_message;
 				ExceptionHandler.handle(e, fComposite.getShell(), title, message);
 			}

 		}

 		@Override
 		public void widgetDefaultSelected(SelectionEvent e) {
 		}

 		private void modifyButtonPressed() {
 			final StatusDialog modifyDialog= createModifyDialog(fComposite.getShell(), fProfileManager.getSelected(), fProfileManager, fProfileStore, false);
 			modifyDialog.open();
 		}

 		private void deleteButtonPressed() {
 			if (MessageDialog.openQuestion(
 					fComposite.getShell(),
 					FormatterMessages.CodingStyleConfigurationBlock_delete_confirmation_title,
 					Messages.format(FormatterMessages.CodingStyleConfigurationBlock_delete_confirmation_question, fProfileManager.getSelected().getName()))) {
 				fProfileManager.deleteSelected();
 			}
 		}

 		private void newButtonPressed() {
 			final CreateProfileDialog p= new CreateProfileDialog(fComposite.getShell(), fProfileManager, fProfileVersioner);
 			if (p.open() != Window.OK)
 				return;
 			if (!p.openEditDialog())
 				return;
 			final StatusDialog modifyDialog= createModifyDialog(fComposite.getShell(), p.getCreatedProfile(), fProfileManager, fProfileStore, true);
 			modifyDialog.open();
 		}

 		private void loadButtonPressed() {
 			final FileDialog dialog= new FileDialog(fComposite.getShell(), SWT.OPEN | SWT.SHEET);
 			dialog.setText(FormatterMessages.CodingStyleConfigurationBlock_load_profile_dialog_title);
 			dialog.setFilterExtensions(new String [] {"*.xml"}); //$NON-NLS-1$
 			final String lastPath= JavaPlugin.getDefault().getDialogSettings().get(fLastSaveLoadPathKey + ".loadpath"); //$NON-NLS-1$
 			if (lastPath != null) {
 				dialog.setFilterPath(lastPath);
 			}
 			final String path= dialog.open();
 			if (path == null)
 				return;
 			JavaPlugin.getDefault().getDialogSettings().put(fLastSaveLoadPathKey + ".loadpath", dialog.getFilterPath()); //$NON-NLS-1$

 			final File file= new File(path);
 			Collection<Profile> profiles= null;
 			try {
 				profiles= fProfileStore.readProfilesFromFile(file);
 			} catch (CoreException e) {
 				final String title= FormatterMessages.CodingStyleConfigurationBlock_load_profile_error_title;
 				final String message= FormatterMessages.CodingStyleConfigurationBlock_load_profile_error_message;
 				ExceptionHandler.handle(e, fComposite.getShell(), title, message);
 			}
 			if (profiles == null || profiles.isEmpty())
 				return;
 			Iterator<Profile> iter=profiles.iterator();
 			while (iter.hasNext()) {
 				final CustomProfile profile= (CustomProfile)iter.next();

 				if (!fProfileVersioner.getProfileKind().equals(profile.getKind())) {
 					final String title= FormatterMessages.CodingStyleConfigurationBlock_load_profile_error_title;
 					final String message= Messages.format(FormatterMessages.ProfileConfigurationBlock_load_profile_wrong_profile_message, new String[] { fProfileVersioner.getProfileKind(),
 							profile.getKind() });
 					MessageDialog.openError(fComposite.getShell(), title, message);
 					return;
 				}

 				if (profile.getVersion() > fProfileVersioner.getCurrentVersion()) {
 					final String title= FormatterMessages.CodingStyleConfigurationBlock_load_profile_error_too_new_title;
 					final String message= FormatterMessages.CodingStyleConfigurationBlock_load_profile_error_too_new_message;
 					MessageDialog.openWarning(fComposite.getShell(), title, message);
 				}

 				if (fProfileManager.containsName(profile.getName())) {
 					final AlreadyExistsDialog aeDialog= new AlreadyExistsDialog(fComposite.getShell(), profile, fProfileManager);
 					if (aeDialog.open() != Window.OK)
 						return;
 				}
 				fProfileVersioner.update(profile);
 				fProfileManager.addProfile(profile);
 			}
 		}
 	}

 	/**
 	 * The GUI controls
 	 */
 	private Composite fComposite;
 	private Combo fProfileCombo;
 	private Button fEditButton;
 	private Button fDeleteButton;
 	private Button fNewButton;
 	private Button fLoadButton;
 	private Button fExportAllButton;

 	private PixelConverter fPixConv;
 	/**
 	 * The ProfileManager, the model of this page.
 	 */
 	private final ProfileManager fProfileManager;
 	private final IScopeContext fCurrContext;
 	private final IScopeContext fInstanceScope;
 	private final ProfileStore fProfileStore;
 	private final IProfileVersioner fProfileVersioner;
 	private final String fLastSaveLoadPathKey;
 	private IPreferenceChangeListener fPreferenceListener;
 	private final PreferencesAccess fPreferenceAccess;
 	private boolean fPreferenceListenerEnabled;

 	public ProfileConfigurationBlock(IProject project, final PreferencesAccess access, String lastSaveLoadPathKey) {

 		fPreferenceAccess= access;
 		fLastSaveLoadPathKey= lastSaveLoadPathKey;

 		fProfileVersioner= createProfileVersioner();
 		fProfileStore= createProfileStore(fProfileVersioner);
 		fInstanceScope= access.getInstanceScope();
 		if (project != null) {
 			fCurrContext= access.getProjectScope(project);
 		} else {
 			fCurrContext= fInstanceScope;
 		}

 		List<Profile> profiles= null;
         try {
             profiles= fProfileStore.readProfiles(fInstanceScope);
         } catch (CoreException e) {
         	JavaPlugin.log(e);
         }
         if (profiles == null) {
         	try {
         		// bug 129427
 				profiles= fProfileStore.readProfiles(DefaultScope.INSTANCE);
         	} catch (CoreException e) {
         		JavaPlugin.log(e);
         	}
         }

         if (profiles == null)
             profiles= new ArrayList<>();

 		fProfileManager= createProfileManager(profiles, fCurrContext, access, fProfileVersioner);

 		new StoreUpdater();

 		fPreferenceListenerEnabled= true;
 		fPreferenceListener= new IPreferenceChangeListener() {
 			@Override
 			public void preferenceChange(PreferenceChangeEvent event) {
 				if (fPreferenceListenerEnabled) {
 					preferenceChanged(event);
 				}
 			}
 		};
 		access.getInstanceScope().getNode(JavaUI.ID_PLUGIN).addPreferenceChangeListener(fPreferenceListener);

 	}

 	/**
 	 * Notifies that a preference has been changed.
 	 *
 	 * @param event the preference change event
 	 */
 	protected void preferenceChanged(PreferenceChangeEvent event) {

 	}

 	protected abstract IProfileVersioner createProfileVersioner();

 	protected abstract ProfileStore createProfileStore(IProfileVersioner versioner);

 	protected abstract ProfileManager createProfileManager(List<Profile> profiles, IScopeContext context, PreferencesAccess access, IProfileVersioner profileVersioner);

 	protected abstract ModifyDialog createModifyDialog(Shell shell, Profile profile, ProfileManager profileManager, ProfileStore profileStore, boolean newProfile);

 	protected abstract void configurePreview(Composite composite, int numColumns, ProfileManager profileManager);

 	private static Button createButton(Composite composite, String text, final int style) {
 		final Button button= new Button(composite, SWT.PUSH);
 		button.setFont(composite.getFont());
 		button.setText(text);

 		final GridData gd= new GridData(style);
 		gd.widthHint= SWTUtil.getButtonWidthHint(button);
 		button.setLayoutData(gd);
 		return button;
 	}

 	/**
 	 * Create the contents
 	 * @param parent Parent composite
 	 * @return Created control
 	 */
 	public Composite createContents(Composite parent) {

 		final int numColumns = 5;

 		fPixConv = new PixelConverter(parent);
 		fComposite = createComposite(parent, numColumns);

 		Label profileLabel= new Label(fComposite, SWT.NONE);
 		profileLabel.setText(PreferencesMessages.CleanUpPreferencePage_Description);
 		GridData data= new GridData(SWT.FILL, SWT.FILL, true, false);
 		data.horizontalSpan= numColumns;
 		profileLabel.setLayoutData(data);

 		fProfileCombo= createProfileCombo(fComposite, 3, fPixConv.convertWidthInCharsToPixels(20));
 		fEditButton= createButton(fComposite, FormatterMessages.CodingStyleConfigurationBlock_edit_button_desc, GridData.HORIZONTAL_ALIGN_BEGINNING);
 		fDeleteButton= createButton(fComposite, FormatterMessages.CodingStyleConfigurationBlock_remove_button_desc, GridData.HORIZONTAL_ALIGN_BEGINNING);

 		fNewButton= createButton(fComposite, FormatterMessages.CodingStyleConfigurationBlock_new_button_desc, GridData.HORIZONTAL_ALIGN_BEGINNING);
 		fLoadButton= createButton(fComposite, FormatterMessages.CodingStyleConfigurationBlock_load_button_desc, GridData.HORIZONTAL_ALIGN_END);
 		fExportAllButton= createButton(fComposite, FormatterMessages.CodingStyleConfigurationBlock_export_all_button_desc, GridData.HORIZONTAL_ALIGN_BEGINNING);
 		createLabel(fComposite, "", 2); //$NON-NLS-1$

 		configurePreview(fComposite, numColumns, fProfileManager);

 		new ButtonController();
 		new ProfileComboController();

 		return fComposite;
 	}

 	private static Combo createProfileCombo(Composite composite, int span, int widthHint) {
 		final GridData gd = new GridData(GridData.FILL_HORIZONTAL);
 		gd.horizontalSpan = span;
 		gd.widthHint= widthHint;

 		final Combo combo= new Combo(composite, SWT.DROP_DOWN | SWT.READ_ONLY );
 		combo.setFont(composite.getFont());
 		SWTUtil.setDefaultVisibleItemCount(combo);
 		combo.setLayoutData(gd);
 		return combo;
 	}

 	protected static Label createLabel(Composite composite, String text, int numColumns) {
 		final GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
 		gd.horizontalSpan = numColumns;
 		gd.widthHint= 0;

 		final Label label = new Label(composite, SWT.WRAP);
 		label.setFont(composite.getFont());
 		label.setText(text);
 		label.setLayoutData(gd);
 		return label;
 	}

 	private Composite createComposite(Composite parent, int numColumns) {
 		final Composite composite = new Composite(parent, SWT.NONE);
 		composite.setFont(parent.getFont());

 		final GridLayout layout = new GridLayout(numColumns, false);
 		layout.marginHeight = 0;
 		layout.marginWidth = 0;
 		composite.setLayout(layout);
 		return composite;
 	}

 	public final boolean hasProjectSpecificOptions(IProject project) {
 		if (project != null) {
 			return fProfileManager.hasProjectSpecificSettings(new ProjectScope(project));
 		}
 		return false;
 	}

 	public boolean performOk() {
 		return true;
 	}

 	public void performApply() {
 		try {
 			fCurrContext.getNode(JavaUI.ID_PLUGIN).flush();
 			fCurrContext.getNode(JavaCore.PLUGIN_ID).flush();
 			if (fCurrContext != fInstanceScope) {
 				fInstanceScope.getNode(JavaUI.ID_PLUGIN).flush();
 				fInstanceScope.getNode(JavaCore.PLUGIN_ID).flush();
 			}
 		} catch (BackingStoreException e) {
 			JavaPlugin.log(e);
 		}
 	}

 	public void performDefaults() {
 		Profile profile= fProfileManager.getDefaultProfile();
 		if (profile != null) {
 			int defaultIndex= fProfileManager.getSortedProfiles().indexOf(profile);
 			if (defaultIndex != -1) {
 				fProfileManager.setSelected(profile);
 			}
 		}
 	}

 	public void dispose() {
 		if (fPreferenceListener != null) {
 			fPreferenceAccess.getInstanceScope().getNode(JavaUI.ID_PLUGIN).removePreferenceChangeListener(fPreferenceListener);
 			fPreferenceListener= null;
 		}
 	}

 	public void enableProjectSpecificSettings(boolean useProjectSpecificSettings) {
 		if (useProjectSpecificSettings) {
 			fProfileManager.commitChanges(fCurrContext);
 		} else {
 			fProfileManager.clearAllSettings(fCurrContext);
 		}
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2000, 2016 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
	*******************************************************************************/
	package org.eclipse.jdt.internal.ui.preferences.formatter;

	import java.io.File;
	import java.util.ArrayList;
	import java.util.Collection;
	import java.util.Iterator;
	import java.util.List;
	import java.util.Observable;
	import java.util.Observer;

	import org.osgi.service.prefs.BackingStoreException;

	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.Combo;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.FileDialog;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Shell;

	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.Platform;
	import org.eclipse.core.runtime.content.IContentType;
	import org.eclipse.core.runtime.preferences.DefaultScope;
	import org.eclipse.core.runtime.preferences.IEclipsePreferences.IPreferenceChangeListener;
	import org.eclipse.core.runtime.preferences.IEclipsePreferences.PreferenceChangeEvent;
	import org.eclipse.core.runtime.preferences.IScopeContext;

	import org.eclipse.core.resources.IProject;
	import org.eclipse.core.resources.ProjectScope;

	import org.eclipse.jface.dialogs.MessageDialog;
	import org.eclipse.jface.dialogs.StatusDialog;
	import org.eclipse.jface.layout.PixelConverter;
	import org.eclipse.jface.window.Window;

	import org.eclipse.jdt.core.JavaCore;

	import org.eclipse.jdt.internal.corext.util.Messages;

	import org.eclipse.jdt.ui.JavaUI;

	import org.eclipse.jdt.internal.ui.JavaPlugin;
	import org.eclipse.jdt.internal.ui.preferences.PreferencesAccess;
	import org.eclipse.jdt.internal.ui.preferences.PreferencesMessages;
	import org.eclipse.jdt.internal.ui.preferences.formatter.ProfileManager.CustomProfile;
	import org.eclipse.jdt.internal.ui.preferences.formatter.ProfileManager.Profile;
	import org.eclipse.jdt.internal.ui.util.ExceptionHandler;
	import org.eclipse.jdt.internal.ui.util.SWTUtil;
	import org.eclipse.jdt.internal.core.manipulation.util.BasicElementLabels;


	public abstract class ProfileConfigurationBlock {

	private class StoreUpdater implements Observer {

	public StoreUpdater() {
	fProfileManager.addObserver(this);
	}

	@Override
	public void update(Observable o, Object arg) {
	try {
	fPreferenceListenerEnabled= false;
	final int value= ((Integer)arg).intValue();
	switch (value) {
	case ProfileManager.PROFILE_DELETED_EVENT:
	case ProfileManager.PROFILE_RENAMED_EVENT:
	case ProfileManager.PROFILE_CREATED_EVENT:
	case ProfileManager.SETTINGS_CHANGED_EVENT:
	try {
	fProfileStore.writeProfiles(fProfileManager.getSortedProfiles(), fInstanceScope); // update profile store
	fProfileManager.commitChanges(fCurrContext);
	} catch (CoreException x) {
	JavaPlugin.log(x);
	}
	break;
	case ProfileManager.SELECTION_CHANGED_EVENT:
	fProfileManager.commitChanges(fCurrContext);
	break;
	}
	} finally {
	fPreferenceListenerEnabled= true;
	}
	}
	}

	class ProfileComboController implements Observer, SelectionListener {

	private final List<Profile> fSortedProfiles;

	public ProfileComboController() {
	fSortedProfiles= fProfileManager.getSortedProfiles();
	fProfileCombo.addSelectionListener(this);
	fProfileManager.addObserver(this);
	updateProfiles();
	updateSelection();
	}

	@Override
	public void widgetSelected(SelectionEvent e) {
	final int index= fProfileCombo.getSelectionIndex();
	fProfileManager.setSelected(fSortedProfiles.get(index));
	}

	@Override
	public void widgetDefaultSelected(SelectionEvent e) {}

	@Override
	public void update(Observable o, Object arg) {
	if (arg == null) return;
	final int value= ((Integer)arg).intValue();
	switch (value) {
	case ProfileManager.PROFILE_CREATED_EVENT:
	case ProfileManager.PROFILE_DELETED_EVENT:
	case ProfileManager.PROFILE_RENAMED_EVENT:
	updateProfiles();
	updateSelection();
	break;
	case ProfileManager.SELECTION_CHANGED_EVENT:
	updateSelection();
	break;
	}
	}

	private void updateProfiles() {
	fProfileCombo.setItems(fProfileManager.getSortedDisplayNames());
	}

	private void updateSelection() {
	fProfileCombo.setText(fProfileManager.getSelected().getName());
	}
	}

	class ButtonController implements Observer, SelectionListener {

	public ButtonController() {
	fProfileManager.addObserver(this);
	fNewButton.addSelectionListener(this);
	fEditButton.addSelectionListener(this);
	fDeleteButton.addSelectionListener(this);
	fLoadButton.addSelectionListener(this);
	fExportAllButton.addSelectionListener(this);
	update(fProfileManager, null);
	}

	@Override
	public void update(Observable o, Object arg) {
	Profile selected= ((ProfileManager)o).getSelected();
	final boolean notBuiltIn= !selected.isBuiltInProfile();
	fDeleteButton.setEnabled(notBuiltIn);
	}

	@Override
	public void widgetSelected(SelectionEvent e) {
	final Button button= (Button)e.widget;
	if (button == fEditButton)
	modifyButtonPressed();
	else if (button == fDeleteButton)
	deleteButtonPressed();
	else if (button == fNewButton)
	newButtonPressed();
	else if (button == fLoadButton)
	loadButtonPressed();
	else if(button == fExportAllButton)
	exportAllButtonPressed();
	}

	/**
	* Exports all the profiles to a file.
	*
	* @since 3.6
	*/
	private void exportAllButtonPressed() {
	final FileDialog dialog= new FileDialog(fComposite.getShell(), SWT.SAVE \| SWT.SHEET);
	dialog.setText(FormatterMessages.CodingStyleConfigurationBlock_export_profiles_dialog_title);
	dialog.setFilterExtensions(new String [] {"*.xml"}); //$NON-NLS-1$
	final String lastPath= JavaPlugin.getDefault().getDialogSettings().get(fLastSaveLoadPathKey + ".loadpath"); //$NON-NLS-1$
	if (lastPath != null) {
	dialog.setFilterPath(lastPath);
	}
	final String path= dialog.open();
	if (path == null)
	return;

	JavaPlugin.getDefault().getDialogSettings().put(fLastSaveLoadPathKey + ".savepath", dialog.getFilterPath()); //$NON-NLS-1$

	final File file= new File(path);
	if (file.exists() && !MessageDialog.openQuestion(fComposite.getShell(), FormatterMessages.CodingStyleConfigurationBlock_export_profiles_overwrite_title, Messages.format(FormatterMessages.CodingStyleConfigurationBlock_export_profiles_overwrite_message, BasicElementLabels.getPathLabel(file)))) {
	return;
	}
	String encoding= ProfileStore.ENCODING;
	final IContentType type= Platform.getContentTypeManager().getContentType("org.eclipse.core.runtime.xml"); //$NON-NLS-1$
	if (type != null)
	encoding= type.getDefaultCharset();
	final Collection<Profile> profiles= new ArrayList<>();
	profiles.addAll(fProfileManager.getSortedProfiles());
	try {
	fProfileStore.writeProfilesToFile(profiles, file, encoding);
	} catch (CoreException e) {
	final String title= FormatterMessages.CodingStyleConfigurationBlock_export_profiles_error_title;
	final String message= FormatterMessages.CodingStyleConfigurationBlock_export_profiles_error_message;
	ExceptionHandler.handle(e, fComposite.getShell(), title, message);
	}

	}

	@Override
	public void widgetDefaultSelected(SelectionEvent e) {
	}

	private void modifyButtonPressed() {
	final StatusDialog modifyDialog= createModifyDialog(fComposite.getShell(), fProfileManager.getSelected(), fProfileManager, fProfileStore, false);
	modifyDialog.open();
	}

	private void deleteButtonPressed() {
	if (MessageDialog.openQuestion(
	fComposite.getShell(),
	FormatterMessages.CodingStyleConfigurationBlock_delete_confirmation_title,
	Messages.format(FormatterMessages.CodingStyleConfigurationBlock_delete_confirmation_question, fProfileManager.getSelected().getName()))) {
	fProfileManager.deleteSelected();
	}
	}

	private void newButtonPressed() {
	final CreateProfileDialog p= new CreateProfileDialog(fComposite.getShell(), fProfileManager, fProfileVersioner);
	if (p.open() != Window.OK)
	return;
	if (!p.openEditDialog())
	return;
	final StatusDialog modifyDialog= createModifyDialog(fComposite.getShell(), p.getCreatedProfile(), fProfileManager, fProfileStore, true);
	modifyDialog.open();
	}

	private void loadButtonPressed() {
	final FileDialog dialog= new FileDialog(fComposite.getShell(), SWT.OPEN \| SWT.SHEET);
	dialog.setText(FormatterMessages.CodingStyleConfigurationBlock_load_profile_dialog_title);
	dialog.setFilterExtensions(new String [] {"*.xml"}); //$NON-NLS-1$
	final String lastPath= JavaPlugin.getDefault().getDialogSettings().get(fLastSaveLoadPathKey + ".loadpath"); //$NON-NLS-1$
	if (lastPath != null) {
	dialog.setFilterPath(lastPath);
	}
	final String path= dialog.open();
	if (path == null)
	return;
	JavaPlugin.getDefault().getDialogSettings().put(fLastSaveLoadPathKey + ".loadpath", dialog.getFilterPath()); //$NON-NLS-1$

	final File file= new File(path);
	Collection<Profile> profiles= null;
	try {
	profiles= fProfileStore.readProfilesFromFile(file);
	} catch (CoreException e) {
	final String title= FormatterMessages.CodingStyleConfigurationBlock_load_profile_error_title;
	final String message= FormatterMessages.CodingStyleConfigurationBlock_load_profile_error_message;
	ExceptionHandler.handle(e, fComposite.getShell(), title, message);
	}
	if (profiles == null \|\| profiles.isEmpty())
	return;
	Iterator<Profile> iter=profiles.iterator();
	while (iter.hasNext()) {
	final CustomProfile profile= (CustomProfile)iter.next();

	if (!fProfileVersioner.getProfileKind().equals(profile.getKind())) {
	final String title= FormatterMessages.CodingStyleConfigurationBlock_load_profile_error_title;
	final String message= Messages.format(FormatterMessages.ProfileConfigurationBlock_load_profile_wrong_profile_message, new String[] { fProfileVersioner.getProfileKind(),
	profile.getKind() });
	MessageDialog.openError(fComposite.getShell(), title, message);
	return;
	}

	if (profile.getVersion() > fProfileVersioner.getCurrentVersion()) {
	final String title= FormatterMessages.CodingStyleConfigurationBlock_load_profile_error_too_new_title;
	final String message= FormatterMessages.CodingStyleConfigurationBlock_load_profile_error_too_new_message;
	MessageDialog.openWarning(fComposite.getShell(), title, message);
	}

	if (fProfileManager.containsName(profile.getName())) {
	final AlreadyExistsDialog aeDialog= new AlreadyExistsDialog(fComposite.getShell(), profile, fProfileManager);
	if (aeDialog.open() != Window.OK)
	return;
	}
	fProfileVersioner.update(profile);
	fProfileManager.addProfile(profile);
	}
	}
	}

	/**
	* The GUI controls
	*/
	private Composite fComposite;
	private Combo fProfileCombo;
	private Button fEditButton;
	private Button fDeleteButton;
	private Button fNewButton;
	private Button fLoadButton;
	private Button fExportAllButton;

	private PixelConverter fPixConv;
	/**
	* The ProfileManager, the model of this page.
	*/
	private final ProfileManager fProfileManager;
	private final IScopeContext fCurrContext;
	private final IScopeContext fInstanceScope;
	private final ProfileStore fProfileStore;
	private final IProfileVersioner fProfileVersioner;
	private final String fLastSaveLoadPathKey;
	private IPreferenceChangeListener fPreferenceListener;
	private final PreferencesAccess fPreferenceAccess;
	private boolean fPreferenceListenerEnabled;

	public ProfileConfigurationBlock(IProject project, final PreferencesAccess access, String lastSaveLoadPathKey) {

	fPreferenceAccess= access;
	fLastSaveLoadPathKey= lastSaveLoadPathKey;

	fProfileVersioner= createProfileVersioner();
	fProfileStore= createProfileStore(fProfileVersioner);
	fInstanceScope= access.getInstanceScope();
	if (project != null) {
	fCurrContext= access.getProjectScope(project);
	} else {
	fCurrContext= fInstanceScope;
	}

	List<Profile> profiles= null;
	try {
	profiles= fProfileStore.readProfiles(fInstanceScope);
	} catch (CoreException e) {
	JavaPlugin.log(e);
	}
	if (profiles == null) {
	try {
	// bug 129427
	profiles= fProfileStore.readProfiles(DefaultScope.INSTANCE);
	} catch (CoreException e) {
	JavaPlugin.log(e);
	}
	}

	if (profiles == null)
	profiles= new ArrayList<>();

	fProfileManager= createProfileManager(profiles, fCurrContext, access, fProfileVersioner);

	new StoreUpdater();

	fPreferenceListenerEnabled= true;
	fPreferenceListener= new IPreferenceChangeListener() {
	@Override
	public void preferenceChange(PreferenceChangeEvent event) {
	if (fPreferenceListenerEnabled) {
	preferenceChanged(event);
	}
	}
	};
	access.getInstanceScope().getNode(JavaUI.ID_PLUGIN).addPreferenceChangeListener(fPreferenceListener);

	}

	/**
	* Notifies that a preference has been changed.
	*
	* @param event the preference change event
	*/
	protected void preferenceChanged(PreferenceChangeEvent event) {

	}

	protected abstract IProfileVersioner createProfileVersioner();

	protected abstract ProfileStore createProfileStore(IProfileVersioner versioner);

	protected abstract ProfileManager createProfileManager(List<Profile> profiles, IScopeContext context, PreferencesAccess access, IProfileVersioner profileVersioner);

	protected abstract ModifyDialog createModifyDialog(Shell shell, Profile profile, ProfileManager profileManager, ProfileStore profileStore, boolean newProfile);

	protected abstract void configurePreview(Composite composite, int numColumns, ProfileManager profileManager);

	private static Button createButton(Composite composite, String text, final int style) {
	final Button button= new Button(composite, SWT.PUSH);
	button.setFont(composite.getFont());
	button.setText(text);

	final GridData gd= new GridData(style);
	gd.widthHint= SWTUtil.getButtonWidthHint(button);
	button.setLayoutData(gd);
	return button;
	}

	/**
	* Create the contents
	* @param parent Parent composite
	* @return Created control
	*/
	public Composite createContents(Composite parent) {

	final int numColumns = 5;

	fPixConv = new PixelConverter(parent);
	fComposite = createComposite(parent, numColumns);

	Label profileLabel= new Label(fComposite, SWT.NONE);
	profileLabel.setText(PreferencesMessages.CleanUpPreferencePage_Description);
	GridData data= new GridData(SWT.FILL, SWT.FILL, true, false);
	data.horizontalSpan= numColumns;
	profileLabel.setLayoutData(data);

	fProfileCombo= createProfileCombo(fComposite, 3, fPixConv.convertWidthInCharsToPixels(20));
	fEditButton= createButton(fComposite, FormatterMessages.CodingStyleConfigurationBlock_edit_button_desc, GridData.HORIZONTAL_ALIGN_BEGINNING);
	fDeleteButton= createButton(fComposite, FormatterMessages.CodingStyleConfigurationBlock_remove_button_desc, GridData.HORIZONTAL_ALIGN_BEGINNING);

	fNewButton= createButton(fComposite, FormatterMessages.CodingStyleConfigurationBlock_new_button_desc, GridData.HORIZONTAL_ALIGN_BEGINNING);
	fLoadButton= createButton(fComposite, FormatterMessages.CodingStyleConfigurationBlock_load_button_desc, GridData.HORIZONTAL_ALIGN_END);
	fExportAllButton= createButton(fComposite, FormatterMessages.CodingStyleConfigurationBlock_export_all_button_desc, GridData.HORIZONTAL_ALIGN_BEGINNING);
	createLabel(fComposite, "", 2); //$NON-NLS-1$

	configurePreview(fComposite, numColumns, fProfileManager);

	new ButtonController();
	new ProfileComboController();

	return fComposite;
	}

	private static Combo createProfileCombo(Composite composite, int span, int widthHint) {
	final GridData gd = new GridData(GridData.FILL_HORIZONTAL);
	gd.horizontalSpan = span;
	gd.widthHint= widthHint;

	final Combo combo= new Combo(composite, SWT.DROP_DOWN \| SWT.READ_ONLY );
	combo.setFont(composite.getFont());
	SWTUtil.setDefaultVisibleItemCount(combo);
	combo.setLayoutData(gd);
	return combo;
	}

	protected static Label createLabel(Composite composite, String text, int numColumns) {
	final GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
	gd.horizontalSpan = numColumns;
	gd.widthHint= 0;

	final Label label = new Label(composite, SWT.WRAP);
	label.setFont(composite.getFont());
	label.setText(text);
	label.setLayoutData(gd);
	return label;
	}

	private Composite createComposite(Composite parent, int numColumns) {
	final Composite composite = new Composite(parent, SWT.NONE);
	composite.setFont(parent.getFont());

	final GridLayout layout = new GridLayout(numColumns, false);
	layout.marginHeight = 0;
	layout.marginWidth = 0;
	composite.setLayout(layout);
	return composite;
	}

	public final boolean hasProjectSpecificOptions(IProject project) {
	if (project != null) {
	return fProfileManager.hasProjectSpecificSettings(new ProjectScope(project));
	}
	return false;
	}

	public boolean performOk() {
	return true;
	}

	public void performApply() {
	try {
	fCurrContext.getNode(JavaUI.ID_PLUGIN).flush();
	fCurrContext.getNode(JavaCore.PLUGIN_ID).flush();
	if (fCurrContext != fInstanceScope) {
	fInstanceScope.getNode(JavaUI.ID_PLUGIN).flush();
	fInstanceScope.getNode(JavaCore.PLUGIN_ID).flush();
	}
	} catch (BackingStoreException e) {
	JavaPlugin.log(e);
	}
	}

	public void performDefaults() {
	Profile profile= fProfileManager.getDefaultProfile();
	if (profile != null) {
	int defaultIndex= fProfileManager.getSortedProfiles().indexOf(profile);
	if (defaultIndex != -1) {
	fProfileManager.setSelected(profile);
	}
	}
	}

	public void dispose() {
	if (fPreferenceListener != null) {
	fPreferenceAccess.getInstanceScope().getNode(JavaUI.ID_PLUGIN).removePreferenceChangeListener(fPreferenceListener);
	fPreferenceListener= null;
	}
	}

	public void enableProjectSpecificSettings(boolean useProjectSpecificSettings) {
	if (useProjectSpecificSettings) {
	fProfileManager.commitChanges(fCurrContext);
	} else {
	fProfileManager.clearAllSettings(fCurrContext);
	}
	}

	}