core/plugins/org.eclipse.dltk.ui/src/org/eclipse/dltk/ui/preferences/NewScriptProjectPreferencePage.java - dltk/org.eclipse.dltk.core - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2017 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
  *
  *******************************************************************************/
 package org.eclipse.dltk.ui.preferences;

 import static org.eclipse.dltk.ui.PreferenceConstants.SRCBIN_FOLDERS_IN_NEWPROJ;
 import static org.eclipse.dltk.ui.PreferenceConstants.SRC_SRCNAME;

 import java.io.UnsupportedEncodingException;
 import java.net.URLDecoder;
 import java.net.URLEncoder;
 import java.util.ArrayList;
 import java.util.NoSuchElementException;
 import java.util.StringTokenizer;

 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.resources.IWorkspace;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.dltk.core.DLTKCore;
 import org.eclipse.dltk.core.IBuildpathEntry;
 import org.eclipse.dltk.internal.core.BuildpathEntry;
 import org.eclipse.dltk.internal.corext.util.Messages;
 import org.eclipse.dltk.internal.ui.dialogs.StatusUtil;
 import org.eclipse.dltk.ui.DLTKUIPlugin;
 import org.eclipse.dltk.ui.dialogs.StatusInfo;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.preference.IPreferenceStore;
 import org.eclipse.jface.preference.PreferencePage;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.ModifyListener;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.events.SelectionListener;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Group;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.swt.widgets.Widget;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.IWorkbenchPreferencePage;

 /*
  * The page for defaults for classpath entries in newscriptprojects.
  * See PreferenceConstants to access or change these values through public API.
  */
 public abstract class NewScriptProjectPreferencePage extends PreferencePage
 		implements IWorkbenchPreferencePage {

 	private static String fgDefaultEncoding = System
 			.getProperty("file.encoding"); //$NON-NLS-1$

 	public abstract IBuildpathEntry[] getDefaultLanguageLibrary();

 	// InterpreterEnvironment Entry

 	public static String decodeInterpreterEnvironmentLibraryDescription(
 			String encoded) {
 		int end = encoded.indexOf(' ');
 		if (end != -1) {
 			return decode(encoded.substring(0, end));
 		}
 		return ""; //$NON-NLS-1$
 	}

 	private static String decode(String str) {
 		try {
 			return URLDecoder.decode(str, fgDefaultEncoding);
 		} catch (UnsupportedEncodingException e) {
 			DLTKUIPlugin.log(e);
 		}
 		return ""; //$NON-NLS-1$
 	}

 	private static String encode(String str) {
 		try {
 			return URLEncoder.encode(str, fgDefaultEncoding);
 		} catch (UnsupportedEncodingException e) {
 			DLTKUIPlugin.log(e);
 		}
 		return ""; //$NON-NLS-1$
 	}

 	public static IBuildpathEntry[] decodeInterpreterEnvironmentLibraryBuildpathEntries(
 			String encoded) {
 		StringTokenizer tok = new StringTokenizer(encoded, " "); //$NON-NLS-1$
 		ArrayList<IBuildpathEntry> res = new ArrayList<IBuildpathEntry>();
 		while (tok.hasMoreTokens()) {
 			try {
 				tok.nextToken(); // desc: ignore
 				int kind = Integer.parseInt(tok.nextToken());
 				IPath path = decodePath(tok.nextToken());
 				boolean isExported = Boolean.valueOf(tok.nextToken())
 						.booleanValue();
 				switch (kind) {
 				case IBuildpathEntry.BPE_SOURCE:
 					res.add(DLTKCore.newSourceEntry(path));
 					break;
 				case IBuildpathEntry.BPE_LIBRARY:
 					res.add(DLTKCore.newLibraryEntry(path, isExported));
 					break;
 				case IBuildpathEntry.BPE_PROJECT:
 					res.add(DLTKCore.newProjectEntry(path, isExported));
 					break;
 				case IBuildpathEntry.BPE_CONTAINER:
 					res.add(DLTKCore.newContainerEntry(path, isExported));
 					break;
 				}
 			} catch (NumberFormatException e) {
 				String message = PreferencesMessages.NewScriptProjectPreferencePage_error_decode;
 				DLTKUIPlugin.log(new Status(IStatus.ERROR,
 						DLTKUIPlugin.PLUGIN_ID, IStatus.ERROR, message, e));
 			} catch (NoSuchElementException e) {
 				String message = PreferencesMessages.NewScriptProjectPreferencePage_error_decode;
 				DLTKUIPlugin.log(new Status(IStatus.ERROR,
 						DLTKUIPlugin.PLUGIN_ID, IStatus.ERROR, message, e));
 			}
 		}
 		return res.toArray(new IBuildpathEntry[res.size()]);
 	}

 	public static String encodeInterpreterEnvironmentLibrary(String desc,
 			IBuildpathEntry[] cpentries) {
 		StringBuffer buf = new StringBuffer();
 		for (int i = 0; i < cpentries.length; i++) {
 			IBuildpathEntry entry = cpentries[i];
 			buf.append(encode(desc));
 			buf.append(' ');
 			buf.append(entry.getEntryKind());
 			buf.append(' ');
 			buf.append(encodePath(entry.getPath()));
 			buf.append(' ');
 			buf.append(entry.isExported());
 			buf.append(' ');
 		}
 		return buf.toString();
 	}

 	private static String encodePath(IPath path) {
 		if (path == null) {
 			return "#"; //$NON-NLS-1$
 		} else if (path.isEmpty()) {
 			return "&"; //$NON-NLS-1$
 		} else {
 			return encode(path.toPortableString());
 		}
 	}

 	private static IPath decodePath(String str) {
 		if ("#".equals(str)) { //$NON-NLS-1$
 			return null;
 		} else if ("&".equals(str)) { //$NON-NLS-1$
 			return Path.EMPTY;
 		} else {
 			return Path.fromPortableString(decode(str));
 		}
 	}

 	private ArrayList fCheckBoxes;
 	private ArrayList fRadioButtons;
 	private ArrayList fTextControls;

 	private SelectionListener fSelectionListener;
 	private ModifyListener fModifyListener;

 	private Text fSrcFolderNameText;

 	// private Combo fInterpreterEnvironmentCombo;

 	private Button fProjectAsSourceFolder;
 	private Button fFoldersAsSourceFolder;

 	private Label fSrcFolderNameLabel;

 	public NewScriptProjectPreferencePage() {
 		super();
 		setPreferenceStore(DLTKUIPlugin.getDefault().getPreferenceStore());
 		setDescription(PreferencesMessages.NewScriptProjectPreferencePage_description);

 		// title used when opened programatically
 		setTitle(PreferencesMessages.NewScriptProjectPreferencePage_title);

 		fRadioButtons = new ArrayList();
 		fCheckBoxes = new ArrayList();
 		fTextControls = new ArrayList();

 		fSelectionListener = new SelectionListener() {
 			@Override
 			public void widgetDefaultSelected(SelectionEvent e) {
 			}

 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				controlChanged(e.widget);
 			}
 		};

 		fModifyListener = e -> controlModified(e.widget);

 	}

 	public static void initDefaults(IPreferenceStore store) {
 		store.setDefault(SRCBIN_FOLDERS_IN_NEWPROJ, false);
 		store.setDefault(SRC_SRCNAME, "src"); //$NON-NLS-1$

 		// store.setDefault(CLASSPATH_InterpreterEnvironmentLIBRARY_LIST,
 		// getDefaultInterpreterEnvironmentLibraries());
 		// store.setDefault(CLASSPATH_InterpreterEnvironmentLIBRARY_INDEX, 0);
 	}

 	@Override
 	public void init(IWorkbench workbench) {
 	}

 	/**
 	 * @see PreferencePage#createControl(Composite)
 	 */
 	@Override
 	public void createControl(Composite parent) {
 		super.createControl(parent);
 		if (DLTKCore.DEBUG) {
 			System.err.println("Add help support here..."); //$NON-NLS-1$
 		}
 		// PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(),
 		// IDLTKHelpContextIds.NEW_JAVA_PROJECT_PREFERENCE_PAGE);
 	}

 	private Button addRadioButton(Composite parent, String label, String key,
 			String value, int indent) {
 		GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
 		gd.horizontalSpan = 2;
 		gd.horizontalIndent = indent;

 		Button button = new Button(parent, SWT.RADIO);
 		button.setText(label);
 		button.setData(new String[] { key, value });
 		button.setLayoutData(gd);

 		button.setSelection(value.equals(getPreferenceStore().getString(key)));

 		fRadioButtons.add(button);
 		return button;
 	}

 	private Text addTextControl(Composite parent, Label labelControl,
 			String key, int indent) {
 		GridData gd = new GridData();
 		gd.horizontalIndent = indent;

 		labelControl.setLayoutData(gd);

 		gd = new GridData(GridData.FILL_HORIZONTAL);
 		gd.widthHint = convertWidthInCharsToPixels(30);

 		Text text = new Text(parent, SWT.SINGLE | SWT.BORDER);
 		text.setText(getPreferenceStore().getString(key));
 		text.setData(key);
 		text.setLayoutData(gd);

 		fTextControls.add(text);
 		return text;
 	}

 	@Override
 	protected Control createContents(Composite parent) {
 		initializeDialogUnits(parent);

 		Composite result = new Composite(parent, SWT.NONE);
 		GridLayout layout = new GridLayout();
 		layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
 		layout.marginWidth = 0;
 		layout.verticalSpacing = convertVerticalDLUsToPixels(10);
 		layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
 		layout.numColumns = 2;
 		result.setLayout(layout);

 		GridData gd = new GridData(GridData.FILL_HORIZONTAL);
 		gd.horizontalSpan = 2;

 		Group sourceFolderGroup = new Group(result, SWT.NONE);
 		layout = new GridLayout();
 		layout.numColumns = 2;
 		sourceFolderGroup.setLayout(layout);
 		sourceFolderGroup.setLayoutData(gd);
 		sourceFolderGroup
 				.setText(PreferencesMessages.NewScriptProjectPreferencePage_sourcefolder_label);

 		int indent = 0;

 		fProjectAsSourceFolder = addRadioButton(
 				sourceFolderGroup,
 				PreferencesMessages.NewScriptProjectPreferencePage_sourcefolder_project,
 				SRCBIN_FOLDERS_IN_NEWPROJ, IPreferenceStore.FALSE, indent);
 		fProjectAsSourceFolder.addSelectionListener(fSelectionListener);

 		fFoldersAsSourceFolder = addRadioButton(
 				sourceFolderGroup,
 				PreferencesMessages.NewScriptProjectPreferencePage_sourcefolder_folder,
 				SRCBIN_FOLDERS_IN_NEWPROJ, IPreferenceStore.TRUE, indent);
 		fFoldersAsSourceFolder.addSelectionListener(fSelectionListener);

 		indent = convertWidthInCharsToPixels(4);

 		fSrcFolderNameLabel = new Label(sourceFolderGroup, SWT.NONE);
 		fSrcFolderNameLabel
 				.setText(PreferencesMessages.NewScriptProjectPreferencePage_folders_src);
 		fSrcFolderNameText = addTextControl(sourceFolderGroup,
 				fSrcFolderNameLabel, SRC_SRCNAME, indent);
 		fSrcFolderNameText.addModifyListener(fModifyListener);

 		// String[] InterpreterEnvironmentNames=
 		// getInterpreterEnvironmentNames();
 		// if (InterpreterEnvironmentNames.length > 0) {
 		// Label InterpreterEnvironmentSelectionLabel= new Label(result,
 		// SWT.NONE);
 		// InterpreterEnvironmentSelectionLabel.setText(PreferencesMessages.NewScriptProjectPreferencePage_InterpreterEnvironmentlibrary_label);
 		// InterpreterEnvironmentSelectionLabel.setLayoutData(new GridData());
 		//
 		// int index=
 		// getPreferenceStore().getInt(CLASSPATH_InterpreterEnvironmentLIBRARY_INDEX);
 		// fInterpreterEnvironmentCombo= new Combo(result, SWT.READ_ONLY);
 		// fInterpreterEnvironmentCombo.setItems(InterpreterEnvironmentNames);
 		// fInterpreterEnvironmentCombo.select(index);
 		// fInterpreterEnvironmentCombo.setLayoutData(new
 		// GridData(GridData.HORIZONTAL_ALIGN_FILL));
 		// }

 		validateFolders();

 		Dialog.applyDialogFont(result);
 		return result;
 	}

 	private void validateFolders() {
 		boolean useFolders = fFoldersAsSourceFolder.getSelection();

 		fSrcFolderNameText.setEnabled(useFolders);
 		fSrcFolderNameLabel.setEnabled(useFolders);
 		if (useFolders) {
 			String srcName = fSrcFolderNameText.getText();
 			if (srcName.length() == 0) {
 				updateStatus(new StatusInfo(
 						IStatus.ERROR,
 						PreferencesMessages.NewScriptProjectPreferencePage_folders_error_namesempty));
 				return;
 			}
 			IWorkspace workspace = DLTKUIPlugin.getWorkspace();
 			IProject dmy = workspace.getRoot().getProject("project"); //$NON-NLS-1$

 			IStatus status;
 			IPath srcPath = dmy.getFullPath().append(srcName);
 			if (srcName.length() != 0) {
 				status = workspace.validatePath(srcPath.toString(),
 						IResource.FOLDER);
 				if (!status.isOK()) {
 					String message = Messages
 							.format(
 									PreferencesMessages.NewScriptProjectPreferencePage_folders_error_invalidsrcname,
 									status.getMessage());
 					updateStatus(new StatusInfo(IStatus.ERROR, message));
 					return;
 				}
 			}
 			IBuildpathEntry entry = DLTKCore.newSourceEntry(srcPath);
 			status = BuildpathEntry.validateBuildpath(DLTKCore.create(dmy),
 					new IBuildpathEntry[] { entry });
 			if (!status.isOK()) {
 				String message = PreferencesMessages.NewScriptProjectPreferencePage_folders_error_invalidcp;
 				updateStatus(new StatusInfo(IStatus.ERROR, message));
 				return;
 			}
 		}
 		updateStatus(new StatusInfo()); // set to OK
 	}

 	private void updateStatus(IStatus status) {
 		setValid(!status.matches(IStatus.ERROR));
 		StatusUtil.applyToStatusLine(this, status);
 	}

 	private void controlChanged(Widget widget) {
 		if (widget == fFoldersAsSourceFolder
 				|| widget == fProjectAsSourceFolder) {
 			validateFolders();
 		}
 	}

 	private void controlModified(Widget widget) {
 		if (widget == fSrcFolderNameText) {
 			validateFolders();
 		}
 	}

 	@Override
 	protected void performDefaults() {
 		IPreferenceStore store = getPreferenceStore();
 		for (int i = 0; i < fCheckBoxes.size(); i++) {
 			Button button = (Button) fCheckBoxes.get(i);
 			String key = (String) button.getData();
 			button.setSelection(store.getDefaultBoolean(key));
 		}
 		for (int i = 0; i < fRadioButtons.size(); i++) {
 			Button button = (Button) fRadioButtons.get(i);
 			String[] info = (String[]) button.getData();
 			button
 					.setSelection(info[1].equals(store
 							.getDefaultString(info[0])));
 		}
 		for (int i = 0; i < fTextControls.size(); i++) {
 			Text text = (Text) fTextControls.get(i);
 			String key = (String) text.getData();
 			text.setText(store.getDefaultString(key));
 		}
 		// if (fInterpreterEnvironmentCombo != null) {
 		// fInterpreterEnvironmentCombo.select(store.getDefaultInt(CLASSPATH_InterpreterEnvironmentLIBRARY_INDEX));
 		// }

 		validateFolders();
 		super.performDefaults();
 	}

 	@Override
 	public boolean performOk() {
 		IPreferenceStore store = getPreferenceStore();
 		for (int i = 0; i < fCheckBoxes.size(); i++) {
 			Button button = (Button) fCheckBoxes.get(i);
 			String key = (String) button.getData();
 			store.setValue(key, button.getSelection());
 		}
 		for (int i = 0; i < fRadioButtons.size(); i++) {
 			Button button = (Button) fRadioButtons.get(i);
 			if (button.getSelection()) {
 				String[] info = (String[]) button.getData();
 				store.setValue(info[0], info[1]);
 			}
 		}
 		for (int i = 0; i < fTextControls.size(); i++) {
 			Text text = (Text) fTextControls.get(i);
 			String key = (String) text.getData();
 			store.setValue(key, text.getText());
 		}

 		// if (fInterpreterEnvironmentCombo != null) {
 		// store.setValue(CLASSPATH_InterpreterEnvironmentLIBRARY_INDEX,
 		// fInterpreterEnvironmentCombo.getSelectionIndex());
 		// }

 		DLTKUIPlugin.getDefault().savePluginPreferences();
 		return super.performOk();
 	}

 	// private String[] getInterpreterEnvironmentNames() {
 	// String prefString=
 	// getPreferenceStore().getString(CLASSPATH_InterpreterEnvironmentLIBRARY_LIST);
 	// ArrayList list= new ArrayList();
 	//		StringTokenizer tok= new StringTokenizer(prefString, ";"); //$NON-NLS-1$
 	// while (tok.hasMoreTokens()) {
 	// list.add(decodeInterpreterEnvironmentLibraryDescription(tok.nextToken()));
 	// }
 	// return (String[]) list.toArray(new String[list.size()]);
 	// }

 }
	/*******************************************************************************
	* Copyright (c) 2000, 2017 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
	*
	*******************************************************************************/
	package org.eclipse.dltk.ui.preferences;

	import static org.eclipse.dltk.ui.PreferenceConstants.SRCBIN_FOLDERS_IN_NEWPROJ;
	import static org.eclipse.dltk.ui.PreferenceConstants.SRC_SRCNAME;

	import java.io.UnsupportedEncodingException;
	import java.net.URLDecoder;
	import java.net.URLEncoder;
	import java.util.ArrayList;
	import java.util.NoSuchElementException;
	import java.util.StringTokenizer;

	import org.eclipse.core.resources.IProject;
	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.resources.IWorkspace;
	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.core.runtime.Status;
	import org.eclipse.dltk.core.DLTKCore;
	import org.eclipse.dltk.core.IBuildpathEntry;
	import org.eclipse.dltk.internal.core.BuildpathEntry;
	import org.eclipse.dltk.internal.corext.util.Messages;
	import org.eclipse.dltk.internal.ui.dialogs.StatusUtil;
	import org.eclipse.dltk.ui.DLTKUIPlugin;
	import org.eclipse.dltk.ui.dialogs.StatusInfo;
	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.preference.IPreferenceStore;
	import org.eclipse.jface.preference.PreferencePage;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.ModifyListener;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.events.SelectionListener;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Group;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.swt.widgets.Widget;
	import org.eclipse.ui.IWorkbench;
	import org.eclipse.ui.IWorkbenchPreferencePage;

	/*
	* The page for defaults for classpath entries in newscriptprojects.
	* See PreferenceConstants to access or change these values through public API.
	*/
	public abstract class NewScriptProjectPreferencePage extends PreferencePage
	implements IWorkbenchPreferencePage {

	private static String fgDefaultEncoding = System
	.getProperty("file.encoding"); //$NON-NLS-1$

	public abstract IBuildpathEntry[] getDefaultLanguageLibrary();

	// InterpreterEnvironment Entry

	public static String decodeInterpreterEnvironmentLibraryDescription(
	String encoded) {
	int end = encoded.indexOf(' ');
	if (end != -1) {
	return decode(encoded.substring(0, end));
	}
	return ""; //$NON-NLS-1$
	}

	private static String decode(String str) {
	try {
	return URLDecoder.decode(str, fgDefaultEncoding);
	} catch (UnsupportedEncodingException e) {
	DLTKUIPlugin.log(e);
	}
	return ""; //$NON-NLS-1$
	}

	private static String encode(String str) {
	try {
	return URLEncoder.encode(str, fgDefaultEncoding);
	} catch (UnsupportedEncodingException e) {
	DLTKUIPlugin.log(e);
	}
	return ""; //$NON-NLS-1$
	}

	public static IBuildpathEntry[] decodeInterpreterEnvironmentLibraryBuildpathEntries(
	String encoded) {
	StringTokenizer tok = new StringTokenizer(encoded, " "); //$NON-NLS-1$
	ArrayList<IBuildpathEntry> res = new ArrayList<IBuildpathEntry>();
	while (tok.hasMoreTokens()) {
	try {
	tok.nextToken(); // desc: ignore
	int kind = Integer.parseInt(tok.nextToken());
	IPath path = decodePath(tok.nextToken());
	boolean isExported = Boolean.valueOf(tok.nextToken())
	.booleanValue();
	switch (kind) {
	case IBuildpathEntry.BPE_SOURCE:
	res.add(DLTKCore.newSourceEntry(path));
	break;
	case IBuildpathEntry.BPE_LIBRARY:
	res.add(DLTKCore.newLibraryEntry(path, isExported));
	break;
	case IBuildpathEntry.BPE_PROJECT:
	res.add(DLTKCore.newProjectEntry(path, isExported));
	break;
	case IBuildpathEntry.BPE_CONTAINER:
	res.add(DLTKCore.newContainerEntry(path, isExported));
	break;
	}
	} catch (NumberFormatException e) {
	String message = PreferencesMessages.NewScriptProjectPreferencePage_error_decode;
	DLTKUIPlugin.log(new Status(IStatus.ERROR,
	DLTKUIPlugin.PLUGIN_ID, IStatus.ERROR, message, e));
	} catch (NoSuchElementException e) {
	String message = PreferencesMessages.NewScriptProjectPreferencePage_error_decode;
	DLTKUIPlugin.log(new Status(IStatus.ERROR,
	DLTKUIPlugin.PLUGIN_ID, IStatus.ERROR, message, e));
	}
	}
	return res.toArray(new IBuildpathEntry[res.size()]);
	}

	public static String encodeInterpreterEnvironmentLibrary(String desc,
	IBuildpathEntry[] cpentries) {
	StringBuffer buf = new StringBuffer();
	for (int i = 0; i < cpentries.length; i++) {
	IBuildpathEntry entry = cpentries[i];
	buf.append(encode(desc));
	buf.append(' ');
	buf.append(entry.getEntryKind());
	buf.append(' ');
	buf.append(encodePath(entry.getPath()));
	buf.append(' ');
	buf.append(entry.isExported());
	buf.append(' ');
	}
	return buf.toString();
	}

	private static String encodePath(IPath path) {
	if (path == null) {
	return "#"; //$NON-NLS-1$
	} else if (path.isEmpty()) {
	return "&"; //$NON-NLS-1$
	} else {
	return encode(path.toPortableString());
	}
	}

	private static IPath decodePath(String str) {
	if ("#".equals(str)) { //$NON-NLS-1$
	return null;
	} else if ("&".equals(str)) { //$NON-NLS-1$
	return Path.EMPTY;
	} else {
	return Path.fromPortableString(decode(str));
	}
	}

	private ArrayList fCheckBoxes;
	private ArrayList fRadioButtons;
	private ArrayList fTextControls;

	private SelectionListener fSelectionListener;
	private ModifyListener fModifyListener;

	private Text fSrcFolderNameText;

	// private Combo fInterpreterEnvironmentCombo;

	private Button fProjectAsSourceFolder;
	private Button fFoldersAsSourceFolder;

	private Label fSrcFolderNameLabel;

	public NewScriptProjectPreferencePage() {
	super();
	setPreferenceStore(DLTKUIPlugin.getDefault().getPreferenceStore());
	setDescription(PreferencesMessages.NewScriptProjectPreferencePage_description);

	// title used when opened programatically
	setTitle(PreferencesMessages.NewScriptProjectPreferencePage_title);

	fRadioButtons = new ArrayList();
	fCheckBoxes = new ArrayList();
	fTextControls = new ArrayList();

	fSelectionListener = new SelectionListener() {
	@Override
	public void widgetDefaultSelected(SelectionEvent e) {
	}

	@Override
	public void widgetSelected(SelectionEvent e) {
	controlChanged(e.widget);
	}
	};

	fModifyListener = e -> controlModified(e.widget);

	}

	public static void initDefaults(IPreferenceStore store) {
	store.setDefault(SRCBIN_FOLDERS_IN_NEWPROJ, false);
	store.setDefault(SRC_SRCNAME, "src"); //$NON-NLS-1$

	// store.setDefault(CLASSPATH_InterpreterEnvironmentLIBRARY_LIST,
	// getDefaultInterpreterEnvironmentLibraries());
	// store.setDefault(CLASSPATH_InterpreterEnvironmentLIBRARY_INDEX, 0);
	}

	@Override
	public void init(IWorkbench workbench) {
	}

	/**
	* @see PreferencePage#createControl(Composite)
	*/
	@Override
	public void createControl(Composite parent) {
	super.createControl(parent);
	if (DLTKCore.DEBUG) {
	System.err.println("Add help support here..."); //$NON-NLS-1$
	}
	// PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(),
	// IDLTKHelpContextIds.NEW_JAVA_PROJECT_PREFERENCE_PAGE);
	}

	private Button addRadioButton(Composite parent, String label, String key,
	String value, int indent) {
	GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
	gd.horizontalSpan = 2;
	gd.horizontalIndent = indent;

	Button button = new Button(parent, SWT.RADIO);
	button.setText(label);
	button.setData(new String[] { key, value });
	button.setLayoutData(gd);

	button.setSelection(value.equals(getPreferenceStore().getString(key)));

	fRadioButtons.add(button);
	return button;
	}

	private Text addTextControl(Composite parent, Label labelControl,
	String key, int indent) {
	GridData gd = new GridData();
	gd.horizontalIndent = indent;

	labelControl.setLayoutData(gd);

	gd = new GridData(GridData.FILL_HORIZONTAL);
	gd.widthHint = convertWidthInCharsToPixels(30);

	Text text = new Text(parent, SWT.SINGLE \| SWT.BORDER);
	text.setText(getPreferenceStore().getString(key));
	text.setData(key);
	text.setLayoutData(gd);

	fTextControls.add(text);
	return text;
	}

	@Override
	protected Control createContents(Composite parent) {
	initializeDialogUnits(parent);

	Composite result = new Composite(parent, SWT.NONE);
	GridLayout layout = new GridLayout();
	layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
	layout.marginWidth = 0;
	layout.verticalSpacing = convertVerticalDLUsToPixels(10);
	layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
	layout.numColumns = 2;
	result.setLayout(layout);

	GridData gd = new GridData(GridData.FILL_HORIZONTAL);
	gd.horizontalSpan = 2;

	Group sourceFolderGroup = new Group(result, SWT.NONE);
	layout = new GridLayout();
	layout.numColumns = 2;
	sourceFolderGroup.setLayout(layout);
	sourceFolderGroup.setLayoutData(gd);
	sourceFolderGroup
	.setText(PreferencesMessages.NewScriptProjectPreferencePage_sourcefolder_label);

	int indent = 0;

	fProjectAsSourceFolder = addRadioButton(
	sourceFolderGroup,
	PreferencesMessages.NewScriptProjectPreferencePage_sourcefolder_project,
	SRCBIN_FOLDERS_IN_NEWPROJ, IPreferenceStore.FALSE, indent);
	fProjectAsSourceFolder.addSelectionListener(fSelectionListener);

	fFoldersAsSourceFolder = addRadioButton(
	sourceFolderGroup,
	PreferencesMessages.NewScriptProjectPreferencePage_sourcefolder_folder,
	SRCBIN_FOLDERS_IN_NEWPROJ, IPreferenceStore.TRUE, indent);
	fFoldersAsSourceFolder.addSelectionListener(fSelectionListener);

	indent = convertWidthInCharsToPixels(4);

	fSrcFolderNameLabel = new Label(sourceFolderGroup, SWT.NONE);
	fSrcFolderNameLabel
	.setText(PreferencesMessages.NewScriptProjectPreferencePage_folders_src);
	fSrcFolderNameText = addTextControl(sourceFolderGroup,
	fSrcFolderNameLabel, SRC_SRCNAME, indent);
	fSrcFolderNameText.addModifyListener(fModifyListener);

	// String[] InterpreterEnvironmentNames=
	// getInterpreterEnvironmentNames();
	// if (InterpreterEnvironmentNames.length > 0) {
	// Label InterpreterEnvironmentSelectionLabel= new Label(result,
	// SWT.NONE);
	// InterpreterEnvironmentSelectionLabel.setText(PreferencesMessages.NewScriptProjectPreferencePage_InterpreterEnvironmentlibrary_label);
	// InterpreterEnvironmentSelectionLabel.setLayoutData(new GridData());
	//
	// int index=
	// getPreferenceStore().getInt(CLASSPATH_InterpreterEnvironmentLIBRARY_INDEX);
	// fInterpreterEnvironmentCombo= new Combo(result, SWT.READ_ONLY);
	// fInterpreterEnvironmentCombo.setItems(InterpreterEnvironmentNames);
	// fInterpreterEnvironmentCombo.select(index);
	// fInterpreterEnvironmentCombo.setLayoutData(new
	// GridData(GridData.HORIZONTAL_ALIGN_FILL));
	// }

	validateFolders();

	Dialog.applyDialogFont(result);
	return result;
	}

	private void validateFolders() {
	boolean useFolders = fFoldersAsSourceFolder.getSelection();

	fSrcFolderNameText.setEnabled(useFolders);
	fSrcFolderNameLabel.setEnabled(useFolders);
	if (useFolders) {
	String srcName = fSrcFolderNameText.getText();
	if (srcName.length() == 0) {
	updateStatus(new StatusInfo(
	IStatus.ERROR,
	PreferencesMessages.NewScriptProjectPreferencePage_folders_error_namesempty));
	return;
	}
	IWorkspace workspace = DLTKUIPlugin.getWorkspace();
	IProject dmy = workspace.getRoot().getProject("project"); //$NON-NLS-1$

	IStatus status;
	IPath srcPath = dmy.getFullPath().append(srcName);
	if (srcName.length() != 0) {
	status = workspace.validatePath(srcPath.toString(),
	IResource.FOLDER);
	if (!status.isOK()) {
	String message = Messages
	.format(
	PreferencesMessages.NewScriptProjectPreferencePage_folders_error_invalidsrcname,
	status.getMessage());
	updateStatus(new StatusInfo(IStatus.ERROR, message));
	return;
	}
	}
	IBuildpathEntry entry = DLTKCore.newSourceEntry(srcPath);
	status = BuildpathEntry.validateBuildpath(DLTKCore.create(dmy),
	new IBuildpathEntry[] { entry });
	if (!status.isOK()) {
	String message = PreferencesMessages.NewScriptProjectPreferencePage_folders_error_invalidcp;
	updateStatus(new StatusInfo(IStatus.ERROR, message));
	return;
	}
	}
	updateStatus(new StatusInfo()); // set to OK
	}

	private void updateStatus(IStatus status) {
	setValid(!status.matches(IStatus.ERROR));
	StatusUtil.applyToStatusLine(this, status);
	}

	private void controlChanged(Widget widget) {
	if (widget == fFoldersAsSourceFolder
	\|\| widget == fProjectAsSourceFolder) {
	validateFolders();
	}
	}

	private void controlModified(Widget widget) {
	if (widget == fSrcFolderNameText) {
	validateFolders();
	}
	}

	@Override
	protected void performDefaults() {
	IPreferenceStore store = getPreferenceStore();
	for (int i = 0; i < fCheckBoxes.size(); i++) {
	Button button = (Button) fCheckBoxes.get(i);
	String key = (String) button.getData();
	button.setSelection(store.getDefaultBoolean(key));
	}
	for (int i = 0; i < fRadioButtons.size(); i++) {
	Button button = (Button) fRadioButtons.get(i);
	String[] info = (String[]) button.getData();
	button
	.setSelection(info[1].equals(store
	.getDefaultString(info[0])));
	}
	for (int i = 0; i < fTextControls.size(); i++) {
	Text text = (Text) fTextControls.get(i);
	String key = (String) text.getData();
	text.setText(store.getDefaultString(key));
	}
	// if (fInterpreterEnvironmentCombo != null) {
	// fInterpreterEnvironmentCombo.select(store.getDefaultInt(CLASSPATH_InterpreterEnvironmentLIBRARY_INDEX));
	// }

	validateFolders();
	super.performDefaults();
	}

	@Override
	public boolean performOk() {
	IPreferenceStore store = getPreferenceStore();
	for (int i = 0; i < fCheckBoxes.size(); i++) {
	Button button = (Button) fCheckBoxes.get(i);
	String key = (String) button.getData();
	store.setValue(key, button.getSelection());
	}
	for (int i = 0; i < fRadioButtons.size(); i++) {
	Button button = (Button) fRadioButtons.get(i);
	if (button.getSelection()) {
	String[] info = (String[]) button.getData();
	store.setValue(info[0], info[1]);
	}
	}
	for (int i = 0; i < fTextControls.size(); i++) {
	Text text = (Text) fTextControls.get(i);
	String key = (String) text.getData();
	store.setValue(key, text.getText());
	}

	// if (fInterpreterEnvironmentCombo != null) {
	// store.setValue(CLASSPATH_InterpreterEnvironmentLIBRARY_INDEX,
	// fInterpreterEnvironmentCombo.getSelectionIndex());
	// }

	DLTKUIPlugin.getDefault().savePluginPreferences();
	return super.performOk();
	}

	// private String[] getInterpreterEnvironmentNames() {
	// String prefString=
	// getPreferenceStore().getString(CLASSPATH_InterpreterEnvironmentLIBRARY_LIST);
	// ArrayList list= new ArrayList();
	// StringTokenizer tok= new StringTokenizer(prefString, ";"); //$NON-NLS-1$
	// while (tok.hasMoreTokens()) {
	// list.add(decodeInterpreterEnvironmentLibraryDescription(tok.nextToken()));
	// }
	// return (String[]) list.toArray(new String[list.size()]);
	// }

	}